Patent Application
20240207179
The instant application contains contents of the electronic Sequence Listing (90425-00410-Sequence-Listing-3-19-24.xml; 184,508 bytes; and Date of Creation: Mar. 19, 2024) is herein incorporated by reference in its entirety.
The field of the present invention also relates generally to consumable compositions of matter that may contain one or more water-soluble cannabinoids.
Cannabinoids are a class of specialized compounds synthesized by Cannabis. They are formed by condensation of terpene and phenol precursors. They include these more abundant forms: Delta-9-tetrahydrocannabinol (THC), cannabidiol (CBD), cannabichromene (CBC), and cannabigerol (CBG). Another cannabinoid, cannabinol (CBN), is formed from THC as a degradation product and can be detected in some plant strains. Typically, THC, CBD, CBC, and CBG occur together in different ratios in the various plant strains.
Cannabinoids are generally classified into two types, neutral cannabinoids and cannabinoid acids, based on whether they contain a carboxyl group or not. It is known that, in fresh plants, the concentrations of neutral cannabinoids are much lower than those of cannabinoid acids. One strain Cannabis sativa contains approximately 61 compounds belonging to the general class of cannabinoids. These cannabinoids are generally lipophilic, nitrogen-free, mostly phenolic compounds, and are derived biogenetically from a monoterpene and phenol, the acid cannabinoids from a monoterpene and phenol carboxylic acid, and have a C21 to base material.
Cannabinoids also find their corresponding carboxylic acids in plant products. In general, the carboxylic acids have the function of a biosynthetic precursor. For example, these compounds arise in vivo from the THC carboxylic acids by decarboxylation the tetrahydrocannabinols A9- and A8-THC and CBD from the associated cannabidiol. As generally shown in
Cannabinoids are widely consumed, in a variety of forms around the world. Cannabinoid-rich preparations of Cannabis, either in herb (i.e. marijuana) or resin form (i.e., hash oil), are used by an estimated 2.6-5.0% of the world population (UNODC, 2012). Cannabinoid containing pharmaceutical products, either containing natural cannabis extracts (Sativex®) or the synthetic cannabinoids dronabinol or nabilone, are available for medical use in several countries
As noted above, Δ-9-tetrahydrocannabinol (also known as THC) is one of the main biologically active components in the Cannabis plant which has been approved by the Food and Drug Administration (FDA) for the control of nausea and vomiting associated with chemotherapy and, more recently, for appetite stimulation of AIDS patients suffering from wasting syndrome. The drug, however, shows other biological activities which lend themselves to possible therapeutic applications, such as in the treatment of glaucoma, migraine headaches, spasticity, anxiety, and as an analgesic.
Indeed, it is well documented that agents, such as cannabinoids and endocannabinoids that activate cannabinoid receptors in the body modulate appetite, and alleviate nausea, vomiting, and pain (Martin B. R. and Wiley, J. L, Mechanism of action of cannabinoids: how it may lead to treatment of cachexia, emesis and pain, Journal of Supportive Oncology 2: 1-10, 2004), multiple sclerosis (Pertwee, R. G., Cannabinoids and multiple sclerosis, Pharmacol. Ther. 95, 165-174, 2002), and epilepsy (Wallace, M. J., Blair, R. E., Falenski, K. W W., Martin, B. R., and DeLorenzo, R. J. Journal Pharmacology and Experimental Therapeutics, 307: 129-137, 2003). In addition, CB2 receptor agonists have been shown to be effective in treating pain (Clayton N., Marshall F. H., Bountra C., O'Shaughnessy C. T., 2002. CB1 and CB2 cannabinoid receptors are implicated in inflammatory pain. 96, 253-260; Malan T. P., Ibrahim M. M., Vanderah T. W., Makriyannis A., Porreca F., 2002. Inhibition of pain responses by activation of CB(2) cannabinoid receptors. Chemistry and Physics of Lipids 121, 191-200; Malan T. P., Jr., Ibrahim M. M., Deng H., Liu Q., Mata H. P., Vanderah T., Porreca F., Makriyannis A., 2001. CB2 cannabinoid receptor-mediated peripheral antinociception. 93, 239-245.; Quartilho A., Mata H. P., Ibrahim M. M., Vanderah T. W., Porreca F., Makriyannis A., Malan T. P., Jr., 2003. Inhibition of inflammatory hyperalgesia by activation of peripheral CB2 cannabinoidreceptors. Anesthesiology 99, 955-960) and multiple sclerosis (Pertwee, R. G., Cannabinoids and multiple sclerosis, Pharmacol. Ther. 95, 165-174, 2002) in animal models.
More recently, several states have approved use of Cannabis and cannabinoid infused products for both recreational and medical uses. As these new medical and commercial markets have developed, there has grown a need to develop more efficient production and isolation of cannabinoid compounds. Traditional methods of cannabinoid production typically focus on extraction and purification of cannabinoids from raw harvested Cannabis. However, traditional cannabinoid extraction and purification methods have a number of technical and practical problems that limits its usefulness.
For example, in U.S. Pat. No. 6,403,126 (Webster et al.), cannabinoids, and other related compounds are isolated from raw harvested Cannabis and treated with an organic solvent, typically a petroleum derived hydrocarbon, or a low molecular-weight alcohol to solubilize the cannabinoids for later isolation. This traditional method is limited in that it relies on naturally grown plant matter that may have been exposed to various toxic pesticides, herbicides and the like. In addition, such traditional extraction methods are imprecise resulting in unreliable and varied concentrations of extracted THC. In addition, many Cannabis strains are grown in hydroponic environments which are also not regulated and can results in the widespread contamination of such strains with chemical and other undesired compounds.
In another example, US Pat. App. No. 20160326130 (Lekhram et al.), cannabinoids, and other related compounds are isolated from raw harvested Cannabis using, again, a series of organic solvents to convert the cannabinoids cannabinoids into a salt, and then back to its original carboxylic acid form. Similar to Webster, this traditional method is limited in that is relies on naturally grown plant matter that may have been exposed to various toxic pesticides, herbicides and the like. In addition, the multiple organic solvents used in this traditional process must be recovered and either recycled and/or properly disposed of.
Another traditional method of cannabinoid extraction involves the generation of hash oils utilizing supercritical carbon-dioxide (sCO2). Under this traditional method, again the dried plant matter is ground and subjected to a sCO2 extraction environment. The primary extract being initially obtained and further separated. For example, as generally described by CA2424356 (Muller et al.) cannabinoids are extracted with the aid of sCO2 under supercritical pressure and temperature conditions and by the addition of accessory solvents (modifiers) such as alcohols. Under this process, this supercritical CO2 evaporates and dissolves into the cannabinoids. However, this traditional process also has certain limiting disadvantages. For example, due to the low solubility in supercritical sCO2, recovery of the cannabinoids of interest is inconsistent. Additionally, any solvents used must be recycled and pumped back to the extractor, in order to minimize operating costs.
Another method utilizes butane to extract cannabinoids, in particular high concentrations of THC, from raw harvested Cannabis. Because butane is non-polar, this process does not extract water soluble by-products such as chlorophyll and plant alkaloids. That said, this process may take up to 48 hours and as such is limited in its ability to scale-up for maximum commercial viability. The other major drawback of traditional butane-based extraction processes is the potential dangers of using flammable solvents, as well as the need to ensure all of the butane is fully removed from the extracted cannabinoids.
Another limiting factor in the viability of these traditional methods of cannabinoid extraction methods is the inability to maintain Cannabis strain integrity. For example, cannabinoids used in medical and research applications, or that are subject to controlled clinical trials, are tightly regulated by various government agencies in the United States and elsewhere. These regulatory agencies require that the Cannabis strains remain chemically consistent over time. Unfortunately, the genetic/chemical compositions of the Cannabis strains change over generations such that they cannot satisfy regulatory mandates present in most clinical trials or certified for use in other pharmaceutical applications.
Several attempts have been made to address these concerns. For example, efforts have been made to produce cannabinoids in genetically engineered organisms. For example, in U.S. patent application Ser. No. 14/795,816 (Poulos, et al.) Here, the applicant claims to have generated a genetically modified strain of yeast capable of producing a cannabinoid by inserting genes that produce the appropriate enzymes for its metabolic production. However, such application is limited in its ability to produce only a single or very limited number of cannabinoid compounds. This limitation is clinically significant. Recent clinical studies have found that the use of a single isolated cannabinoid as a therapeutic agent is not as effective as treatment with the naturally-occurring “entourage” of primary and secondary cannabinoids associated with various select strains. The system in Poulos is further limited in the ability to account for toxic by-products of cannabinoid synthesis, as well as the directly toxic effects of the insoluble, and/or only lipid-soluble, cannabinoid compounds themselves.
Additional attempts have been made to chemically synthesize cannabinoids, such as THC. However, the chemical synthesis of various cannabinoids is a costly process when compared to the extraction of cannabinoids from naturally occurring plants. The chemical synthesis of cannabinoids also involves the use of chemicals that are not environmentally friendly, which can be considered as an additional cost to their production. Furthermore, the synthetic chemical production of various cannabinoids has been classified as less pharmacologically active as those extracted from plants such as Cannabis sativa.
Efforts to generate large-scale Cannabis cell cultures have also raised a number of technical problems. Chief among them is the fact that cannabinoids are cytotoxic. Under natural conditions cannabinoids are generated and then stored extracellularly in small glandular structures called trichomes. Trichomes can be visualized as small hairs or other outgrowths from the epidermis of a Cannabis plant. As a result, in Cannabis cell cultures, the inability to store cannabinoids extracellularly means any accumulation of cannabinoids would be toxic to the cultured cells. Such limitations impair the ability of Cannabis cell cultures to be scaled-up for industrial levels of production.
Efforts to generate Cannabis strains/cell cultures that produce or accumulate high-levels of cannabinoids have raised a number of technical problems. Chief among them is the fact that cannabinoid synthesis produces toxic by-products. Notably, both CBDA and THCA synthases require molecular oxygen, in conjunction with a molecule of FAD, to oxidize Cannabigerolic acid (CBGA). Specifically, as shown in
Cannabis plants deal with this toxicity by sequestering cannabinoid biosynthesis and storage extracellularly in small glandular structures called trichomes as note above. For example, THCA synthase is a water soluble enzyme that is responsible for the production of THC. For example, THC biosynthesis occurs in glandular trichomes and begins with condensation of geranyl pyrophosphate with olivetolic acid to produce cannabigerolic acid (CBGA); the reaction is catalyzed by an enzyme called geranylpyrophosphate:olivatolate geranyltransferase. CBGA then undergoes oxidative cyclization to generate tetrahydrocannabinolic acid (THCA) in the presence of THCA synthase. THCA is then transformed into THC by non-enzymatic decarboxylation. Sub-cellular localization studies using RT-PCR and enzymatic activity analyses demonstrate that THCA synthase is expressed in the secretory cells of glandular trichomes, and then is translocated into the secretory cavity where the end product THCA accumulates. THCA synthase present in the secretory cavity is functional, indicating that the storage cavity is the site for THCA biosynthesis and storage. In this way, the Cannabis is able to produce cannabinoids extracellularly and thereby avoid the cytotoxic effects of these compounds. However, as a result, the ability to access and chemically alter cannabinoids in vivo is impeded by this cellular compartmentalization.
To address these concerns, some have proposed chemically modifying cannabinoid compounds to reduce their cytotoxic effects. For example, Zipp, et al., have proposed utilizing an in vitro method to produce cannabinoid glycosides. However, this application is limited to in vitro systems only. Specifically, as noted above, cannabinoid synthase enzymes, such as THCA synthase, are water soluble proteins that are exported out of the basal trichome cells into the storage compartment where it is active and catalyzes the synthesis of THCA. Specifically, in order to effectively mediate the cellular export of such cannabinoid synthase, this enzyme contains a 28 amino acid signal peptide that directs its export out of the cell and into the extracellular trichrome where cannabinoid synthesis occurs.
The foregoing problems regarding the production, detoxification and isolation of cannabinoids may represent a long-felt need for an effective—and economical—solution to the same. While implementing elements may have been available, actual attempts to meet this need may have been lacking to some degree. This may have been due to a failure of those having ordinary skill in the art to fully appreciate or understand the nature of the problems and challenges involved.
As a result of this lack of understanding, attempts to meet these long-felt needs may have failed to effectively solve one or more of the problems or challenges here identified. These attempts may even have led away from the technical directions taken by the present inventive technology and may even result in the achievements of the present inventive technology being considered to some degree an unexpected result of the approach taken by some in the field.
As will be discussed in more detail below, the current inventive technology overcomes the limitations of traditional cannabinoid production systems while meeting the objectives of a truly effective and scalable cannabinoid production, modification and isolation system.
Generally, the inventive technology relates to the field of chemical modification and isolation in yeast suspension cultures. The present inventive technology further relates to improved systems and methods for the modification and isolation of pharmaceutically active components from plant materials. In one embodiment, the inventive technology may encompass a novel system for the generation of chemically modified-cannabinoid compounds in a yeast suspension culture. The inventive technology may include systems and methods for high-efficiency chemical modification and isolation of cannabinoid compounds from yeast suspension cultures. In this embodiment, various select cannabinoid compounds may be chemically modified into soluble and non-toxic configurations.
One aim of the current inventive technology includes improved systems and methods for the modification of cannabinoids in a sterile yeast and/or plant culture system. In one embodiment, the inventive technology may include the production of a sterile yeast and/or plant cell suspension culture. The inventive technology may allow for certain transgenes to be introduced into these yeast strains and/or plant to transiently modify the chemical structure of the cannabinoid compounds. This transient modification may render the cannabinoids soluble in water. Such modifications may also alter the rate at which the cannabinoids are metabolized generating a modified cannabinoid with enhanced kinetics that may be used in certain therapeutic applications or as a prodrug. These transiently modified cannabinoids, aided by their modified chemical structure, may be allowed to accumulate at higher than native levels without having a deleterious effect on the cultured yeast and/or plant cells. Being soluble, they may also be secreted through endogenous and/or exogenous ABC or other trans-membrane protein transporters into the culture medium for later harvesting and isolation. It is noted that naturally occurring cannabinoids are strong inhibitors of ABC transporters. These transiently modified cannabinoids may be harvested and isolated from the aforementioned culture systems, and then enzymatically restored to their original chemical structure. Other embodiments may allow for the regulation of cannabinoid modification and isolation. In such embodiment, discreet and known amounts of cannabinoids may be introduced into a yeast and/or plant suspension culture and transiently modified. Later, the modified cannabinoids may be extracted from the cell culture and isolated such that the quantity and relative ratios of the various cannabinoids is known and quantifiable. In this manner the isolated cannabinoid extract may be chemically consistent and as such, easily dosable for both pharmaceutical and/or recreational applications.
Additional aims of the inventive technology may include the transient modification of cannabinoid compounds to render them water-soluble in yeast cell culture systems. In a preferred embodiment, such soluble cannabinoids may have reduced cytotoxicity to yeast cells in culture and may further be actively transported out of the cell and allowed to accumulate at levels that would normally have a deleterious effect on the cell culture. Additional embodiments may include the isolation of these transiently modified cannabinoids followed by enzymatic conversion or reconstitution to their original and/or partially modified structure.
Another aim of the current invention may include the systems, methods and compositions for the generation of water-soluble cannabinoid compounds. Another aim of the current inventive technology includes the generation of various compositions of matter containing water-soluble cannabinoids. In one preferred embodiment, such compositions of matter may contain water-soluble cannabinoids generated in an in vitro and/or in vivo system.
Additional aims of the invention may include delivery systems and compositions that include water-soluble cannabinoids, preferably glycosylated and/or acetylated cannabinoids. Additional embodiments may further include methods and systems for the production of compositions that include water-soluble cannabinoids, preferably glycosylated and/or acetylated cannabinoids.
Another aim of the current invention may include systems, methods and compositions for the delivery of water-soluble cannabinoids, preferably glycosylated and/or acetylated cannabinoids as a prodrug. Included in this invention may include novel prodrug compositions.
One aim of the invention may include systems, methods and compositions for the in vivo production, modification and isolation of cannabinoid compounds from Cannabis plants. In particular, the invention provides systems and methods for high level in vivo biosynthesis of water-soluble cannabinoids in yeast. In one preferred embodiment, the suspension culture may include the biotransformation of one or more cannabinoids in yeast, or other plant cells into a water-soluble form.
One aim of the invention may include systems, methods and compositions for the in vivo production, modification and isolation of cannabinoid compounds from Cannabis plants. In particular, the invention provides systems and methods for high level in vivo biosynthesis of water-soluble cannabinoids in cell suspension cultures. In one preferred embodiment, the suspension culture may include a yeast suspension culture, a tobacco or other plant cell suspension culture or a cannabis plant cell suspension culture.
The current inventive technology includes systems and methods for enhanced production and/or accumulation of cannabinoids. In one embodiment, the invention may include systems and methods for enhanced production and/or accumulation of cannabinoids in an in vivo system, such as a yeast, or plant cell suspension culture.
Another aim of the current invention may include the generation of genetically modified plants cells that may further be in a suspension culture that may overexpress certain endogenous/exogenous genes that result in the over-production and/or accumulation of cannabinoids above wild-type levels. In one preferred embodiment, such transgenic plant cell cultures may exhibit enhanced production and accumulation of cannabinoid precursor compounds, such as THCA (tetrahydrocannabinolic acid), CBCA (cannabichromenic acid), and CBDA (cannabidiolic acid). Such transgenic plant cells in culture may additionally exhibit enhanced production and localized accumulation of cannabinoids, such as THCs, CBCs and CBDs.
An additional aim of the current invention may include the generation of genetically modified plant cells in culture expressing certain endogenous/exogenous that result in the enhanced biomodification of cannabinoids. In one preferred embodiment, such cultured transgenic plant cells may exhibit enhanced modification of cannabinoids including hydroxylation, and/or acetylation, and/or glycosylation. In additional preferred embodiments, such transgenic plants may exhibit enhanced modification of cannabinoids including acetylation and glycosylation, such as an O acetylated glycoside form. For example, acetylation adds an acetyl group (—CH3OOH) to a cannabinoid such that the carboxylate group is acidic and charged at neutral pH making it highly water-soluble.
Another aim of the current invention may include the generation of genetically modified yeast strains overexpressing certain endogenous/exogenous genes that result in the over-production and/or accumulation of cannabinoids above wild-type levels. In one preferred embodiment, such transgenic yeast may exhibit enhanced production and localized accumulation of cannabinoid precursor compounds, such as THCA (tetrahydrocannabinolic acid), CBCA (cannabichromenic acid), and CBDA (cannabidiolic acid). Such transgenic plants may additionally exhibit enhanced production and localized accumulation of cannabinoids, such as THCs, CBCs and CBDs.
An additional aim of the current invention may include the generation of genetically modified plants expressing certain genes that result in the modification of cannabinoids into water-soluble forms. In one preferred embodiment, such transgenic yeast may exhibit enhanced modification of cannabinoids including hydroxylation, and/or acetylation, and/or glycosylation. In additional preferred embodiments, such transgenic plants may exhibit enhanced modification of cannabinoids including acetylation and glycosylation, such as an O acetyl glycoside form. For example, acetylation adds an acetate group (—CH3COOH) to a cannabinoid such that the carboxylate group is acidic and charged at neutral pH making it highly water-soluble.
One aim of the current inventive technology may be to generate genetically modified, or transgenic plant cells in a suspension culture that overexpresses one or more transcription factors, such as myb, that enhance metabolite flux through the cannabinoid biosynthetic pathway. In one preferred embodiment, these transcription factors may include various analogues. In certain preferred embodiments, one or more of these transgenes may be operably-linked to one or more promoters.
One aim of the current inventive technology may be to generate genetically modified or transgenic Cannabis plant cells in a suspension culture that overexpresses one or more transcription factors, such as myb, that enhance metabolite flux through the cannabinoid biosynthetic pathway. In one preferred embodiment, these transcription factors may include various analogues. In certain preferred embodiment, one or more of these transgenes may be operably-linked to one or more promoters.
Another aim of the current inventive technology may be to generate a genetically modified or transgenic tobacco cell culture that overexpresses one or more transcription factors that enhance metabolite flux through the cannabinoid biosynthetic pathway. In one preferred embodiment, these transgenes may be operably linked to one or more promoters.
Yet, another aim of the current inventive technology may be to generate a genetically modified or transgenic plant cell that expresses an enzyme that is configured to be capable of reducing hydrogen peroxide (H2O2) levels that may be generated during cannabinoid synthesis. In one preferred embodiment, the current inventive technology may be to generate a genetically modified or transgenic tobacco and/or Cannabis plant cell in a suspension culture that expresses a catalase protein. In this embodiment, this catalase protein may reduce hydrogen peroxide (H2O2) levels generated during cannabinoid synthesis.
Yet, another aim of the current inventive technology may be to generate genetically modified plants, plant cells and/or yeast cells that expresses an enzyme that is configured to be capable of reducing hydrogen peroxide (H2O2) levels that may be generated during cannabinoid synthesis. In one preferred embodiment, the current inventive technology may be to generate a genetically modified or transgenic yeast cell in a suspension culture that expresses a catalase protein. In this embodiment, this catalase protein may reduce hydrogen peroxide (H2O2) levels generated during cannabinoid synthesis.
Another aim of the current invention may include the introduction of one or more compounds to facilitate the chemical decomposition of hydrogen peroxide resulting from cannabinoids biosynthesis. In one preferred embodiment, one or more chemicals, metal ions, and/or catalysts may be introduced into a growth media to detoxify hydrogen peroxide (H2O2) in both yeast and plant cell cultures. It should be noted that additional cell cultures and cell lines may be contemplated in the invention. For example, CHO cells, HeLa cells and insect cell lines, like SF-9 cells may be genetically modified as generally described herein to generate water-soluble cannabinoids.
Additional embodiments of the inventive technology may include the transient modification of cannabinoid compounds to reduce and/or eliminate their cytotoxicity in plants or plant cell culture systems. In a preferred embodiment, such transiently modified cannabinoids may be allowed to accumulate at levels that would normally have a deleterious effect on the cell. Additional embodiments may include the isolation of these transiently modified cannabinoids followed by enzymatic conversion or reconstitution to their original and/or partially modified structure.
Another aim of the invention may include the generation of a transgenic plant and or plant cell cultures that may over express endogenous genes that may be configured to modify cannabinoids. Additional aim may include the co-expression of heterologous transcription factors that may increase cannabinoid production. Another aim of the invention may include the co-expression of heterologous genes that detoxify the hydrogen peroxide byproducts generated through cannabinoid biosynthesis. Co-expression of such genes may be additive with the co-expression of genes configured to modify and/or localize cannabinoid biomodifications.
Another aim of the invention may include systems, methods and compositions for the generation of a yeast cannabinoid production system coupled with systems, methods and compositions for the reducing hydrogen peroxide toxicity resulting from cannabinoid synthesis. Another aim of the invention may include systems, methods and compositions for the generation of a yeast cannabinoid production system coupled with systems, methods and compositions for the biomodification of such yeast generated cannabinoids into functionalized as well as water-soluble forms as generally described herein.
Additional embodiments of the invention may include:
Another aim of the invention includes compositions of novel water-soluble cannabinoids and their method or manufacture. Still other aims of the current invention include additional compositions of matter that incorporate one or more water-soluble cannabinoids.
The above and other aspects, features, and advantages of the present disclosure will be better understood from the following detailed descriptions taken in conjunction with the accompanying figures, all of which are given by way of illustration only, and are not limiting the presently disclosed embodiments, in which:
The present invention includes a variety of aspects, which may be combined in different ways. The following descriptions are provided to list elements and describe some of the embodiments of the present invention. These elements are listed with initial embodiments; however it should be understood that they may be combined in any manner and in any number to create additional embodiments. The variously described examples and preferred embodiments should not be construed to limit the present invention to only the explicitly described systems, techniques, and applications. Further, this description should be understood to support and encompass descriptions and claims of all the various embodiments, systems, techniques, methods, devices, and applications with any number of the disclosed elements, with each element alone, and also with any and all various permutations and combinations of all elements in this or any subsequent application.
The inventive technology may include systems and methods for the chemical modification of cannabinoid compounds. In one embodiment, a suspension culture of one or more yeast strains may be established. In one preferred embodiment, culture, and more preferably a suspension culture of Saccharomyces cerevisiae and/or Pichiapastoris or other suitable yeast species may be established in a fermenter or other similar apparatus. It should be noted that the use of the above identified example in this embodiment is exemplary only, as various yeast strains, mixes of strains, hybrids of different strains or clones may be used to generate a suspension culture. For example, Pichiapastoris or any other appropriate yeast strain, including but not limited to all strains of yeast deposited with the ATCC. (The yeast strain deposit database(s) being incorporated by reference in its entirety.) In certain cases, such fermenters may include large industrial-scale fermenters allowing for a large quantity of yeast cells to be grown. In this embodiment, it may be possible to culture a large quantity of cells from a single-strain of, for example, P. pastoris or K. marxianus, which may establish a cell culture having a consistent rate of cannabinoid modification. Such cultured growth may be continuously sustained with the continual addition of nutrient and other growth factors being added to the culture. Such features may be automated or accomplished manually.
As noted above, cannabinoid producing strains of Cannabis, as well as other plants may be utilized with the inventive technology. In certain preferred embodiments, Cannabis plant material may be harvested and undergo cannabinoid extraction through one or more of the methods generally described above. These extracted cannabinoids may be introduced into a genetically modified yeast suspension cell culture to be further modified as described below.
As noted above, accumulation of high-levels of cannabinoids may be toxic for the yeast cell. As such, the inventive technology may transiently modify the cannabinoids produced in the yeast cell culture in vivo. In one preferred embodiment, cytochrome P450's (CYP) monooxygenases may be utilized to transiently modify or functionalize the chemical structure of the cannabinoids to produce water-soluble forms. CYPs constitute a major enzyme family capable of catalyzing the oxidative biotransformation of many pharmacologically active chemical compounds and other lipophilic xenobiotics. For example, the most common reaction catalyzed by cytochromes P450 is a monooxygenase reaction, e.g., insertion of one atom of oxygen into the aliphatic position of an organic substrate (RH) while the other oxygen atom is reduced to water:
Several cannabinoids, including THC, have been shown to serve as a substrate for human CYPs (CYP2C9 and CYP3A4). Similarly, CYPs have been identified that metabolize cannabidiol (CYPs 2C19, 3A4); cannabinol (CYPs 2C9, 3A4); JWH-018 (CYPs 1A2, 2C9); and AM2201 (CYPs 1A2, 2C9). For example, as shown generally below, in one exemplary system, CYP2C9 may hydroxylate a THC molecule resulting in a hydroxyl form of THC. Further oxidation of the hydroxyl form of THC by CYP2C9 may convert it into a carboxylic acid form, which loses its psychoactive capabilities rendering it an inactive metabolite.
In one embodiment, yeast cells may be transformed with artificially created genetic constructs encoding one or more CYPs. In one preferred embodiment, genes encoding one or more non-human isoforms and/or analogs, as well as possibly other CYPs that may functionalize cannabinoids may be expressed in transgenic yeast grown in a suspension culture. Additional embodiments may include genetic control elements such as promotors and/or enhancers as well as post-transcriptional regulatory elements that may also be expressed in transgenic yeast such that the presence, quantity and activity of any CYPs present in the suspension culture may be modified and/or calibrated.
In this preferred embodiment, NADPH-cytochrome P450 oxidoreductase (CPR) may be used to assist in the activity/function of one or more of the CYPs expressed within a genetically modified yeast cell. In this embodiment, CPR may serve as an electron donor to eukaryotic CYPs facilitating their enzymatic function within the transgenic yeast strain(s) described above. In one preferred embodiment, genes encoding CPR, or one or more non-human isoforms and/or analogs of CPR that may act as an electron donor to CYPs may be expressed in transgenic yeast grown in a suspension culture. Additional embodiments may include genetic control elements such as promotors and/or enhancers as well as post-transcriptional regulatory elements that may also be expressed in transgenic yeast such that the presence, quantity and activity of CPR present in the suspension culture may be modified and/or calibrated. For example, downregulation of the expression of CPR may decrease or stop the functionalization of cannabinoids by preventing the enzymatic action of the CYPs in the yeast cell.
Additional steps may be taken to further modify the functionalized cannabinoids. In a preferred embodiment, glycosylation of functionalized cannabinoids may covert to them into a water-soluble form. In an exemplary embodiment shown below, the inventive technology may utilize one or more UDP-glucuronosyltransferases (UGT) to catalyze the glucuronosylation or glucuronidation of both primary (CBD, CBN) and secondary cannabinoids (THC, JWH-018, JWH-073). In this embodiment, glucuronidation may consist of the transfer of a glucuronic acid component of uridine diphosphate glucuronic acid to a cannabinoid substrate by any of several types of UGTs as described above. Glucuronic acid is a sugar acid derived from glucose, with its sixth carbon atom oxidized to a carboxylic acid.
The conversion of a functionalized cannabinoid, in this example a carboxylic acid form of THC, to a glycosylated form of THC may generate a transiently modified cannabinoid that may be both soluble, and non-toxic to the cells in a suspension culture. These chemical modifications may allow for greater levels of cannabinoid accumulation within a yeast cell and/or in the surrounding cell culture media without the deleterious cytotoxic effects that may be seen with unmodified cannabinoids.
The inventive technology may include the generation of transgenic yeast strains having artificial genetic constructs that that may express one or more glycosyltransferases, or other enzymes capable of glycosylating functionalized cannabinoid compounds. In one preferred embodiment, artificial genetic constructs having genes encoding one or more UDP- and/or ADP-glycosyltransferases, including non-human analogues of those described above, as well as other isoforms, may be expressed in transgenic yeast cells and grown in suspension or other cell cultures. Additional embodiments may include genetic control elements such as promotors and/or enhancers as well as post-transcriptional regulatory control elements that may also be expressed in a transgenic yeast strain such that the presence, quantity and activity of any glycosyltransferases present in the suspension culture may be regulated. Additional embodiments may include artificial genetic constructs having one or more genes encoding one or more UDP- and/or ADP-glycosyltransferases having tags that may assist in the movement of the gene product to a certain portion of the cell, such as the cellular locations were cannabinoids and/or functionalized cannabinoids may be stored, and/or excreted from the cell.
In one embodiment of the inventive technology, the water-soluble, glycosylated cannabinoids, generally being referred to as transiently modified cannabinoids, may be transported into and harvested from the yeast cell culture media. In one embodiment, transiently modified cannabinoids may accumulate within the yeast cell itself. In this example, the yeast cell culture may be allowed to grow to a desired level of cell or optical density, or in other instances until a desired level of transiently modified cannabinoids have accumulated in the cultured cells and/or media. All, or a portion of the yeast cells containing the accumulated transiently modified cannabinoids may then be harvested from the culture and/or media, which in a preferred embodiment may be an industrial-scale fermenter or other apparatus suitable for the large-scale culturing of yeast or other microorganisms. The harvested yeast cells may be lysed such that the accumulated transiently modified cannabinoids may be released to the surrounding lysate. Additional steps may include treating this lysate. Examples of such treatment may include filtering, centrifugation or screening to remove extraneous cellular material as well as chemical treatments to improve later cannabinoid yields.
The transiently modified cannabinoids may be further isolated and purified. In one preferred embodiment, the yeast lysate may be processed utilizing affinity chromatography or other purification methods. In this preferred embodiment, an affinity column having a ligand configured to bind with one or more of the transiently modified cannabinoids, for example, through association with the glucuronic acid functional group, among others, may be immobilized or coupled to a solid support. The lysate may then be passed over the column such that the transiently modified cannabinoids, having specific binding affinity to the ligand become bound and immobilized. In some embodiments, non-binding and non-specific binding proteins that may have been present in the lysate may be removed. Finally, the transiently modified cannabinoids may be eluted or displaced from the affinity column by, for example, a corresponding sugar or other compound that may displace or disrupt the cannabinoid-ligand bond. The eluted transiently modified cannabinoids may be collected and further purified or processed.
In yet another separate embodiment, the now soluble transiently modified cannabinoids may be passively and/or actively excreted from the cell. In one exemplary model, an ATP-binding cassette transporter (ABC transporters) or other similar molecular structure may recognize the glucuronic acid functional group (conjugate) on the transiently modified cannabinoid and actively transport it into the surrounding media. In this embodiment, a yeast cell culture may be allowed to grow until an output parameter is reached. In one example, an output parameter may include allowing the yeast cell culture to grow until a desired cell/optical density is reached, or a desired level of transiently modified cannabinoids is reached. In this embodiment, the culture media containing the transiently modified cannabinoid may be harvested for later cannabinoid extraction. In some embodiments, this harvested media may be treated in a manner similar to the lysate generally described above. Additionally, the transiently modified cannabinoids present in the raw and/or treated media may be isolated and purified, for example, through affinity chromatography in a manner similar to that described above.
In certain embodiments, this purified cannabinoid isolate may contain a mixture of primary and secondary glycosylated cannabinoids. As noted above, such purified glycosylated cannabinoids may be water-soluble and metabolized slower than unmodified cannabinoids providing a slow-release capability that may be desirable in certain pharmaceutical applications, such as for use in tissue-specific applications or as a prodrug. In this embodiment, purified glycosylated cannabinoids may be incorporated into a variety of pharmaceutical and/or nutraceutical applications. For example, the purified glycosylated cannabinoids may be incorporated into various solid and/or liquid delivery vectors for use in pharmaceutical applications. As noted above, absent modification, these transiently modified cannabinoids no longer possess their psychoactive component, making their application in research, therapeutic and pharmaceutical applications especially advantageous. Additional therapeutic applications may include the administration of a therapeutic dose of an “entourage” of isolated and purified transiently modified cannabinoids.
The inventive technology may also include a system to convert or reconstitute transiently modified cannabinoids. In one preferred embodiment, glycosylated cannabinoids may be converted into non-glycosylated cannabinoids through their treatment with one or more generalized or specific glycosidases. In this embodiment, these glycosidase enzymes may remove a sugar moiety. Specifically, these glycosidases may remove the glucuronic acid moiety reconstituting the cannabinoid compound to a form exhibiting psychoactive activity. This reconstitution process may generate a highly purified “entourage” of primary and secondary cannabinoids. These reconstituted cannabinoid compounds may also be incorporated into various solid and/or liquid delivery vectors for use in a variety of pharmaceutical and other commercial applications. In certain embodiments, transiently modified cannabinoids may be reconstituted through incubation with one or more generalized or specific glycosidases in an in vitro system.
As noted above, cannabinoid producing strains of Cannabis, as well as other plants may be utilized with the inventive technology. In certain preferred embodiments, Cannabis plant material may be harvested and undergo cannabinoid extraction. These traditionally extracted cannabinoids may then be modified from their native forms through the in vitro application of one or more CYP's that may generate hydroxyl and carboxylic acid forms of these cannabinoids respectively. These functionalized cannabinoids may be further modified through the in vitro application of one or more UGTs as generally described below. In this embodiment, the new transiently modified cannabinoids may be isolated and purified through a process of affinity chromatography and then applied to various commercial and other therapeutic uses. In other embodiments, the transiently modified cannabinoids may be restored and reconstituted through the in vitro application of one or more glycosidase enzymes. These restored cannabinoids may also be applied to various commercial and other therapeutic uses.
The inventive technology includes systems and methods for high-level production of cannabinoid compounds in cell culture systems. As used herein, the term “high level” in this instance may mean higher than wild-type biosynthesis or accumulation of one or more cannabinoids in a yeast or plant cell culture. In one embodiment, a suspension or hairy root or cell suspension culture of one or more plant strains may be established. In one preferred embodiment, a suspension or hairy root or cell suspension culture of a tobacco plant may be established. It should be noted that the term strain may refer to a plant strain, as well as a cell culture, or cell line derived from a plant, such as tobacco. In another preferred embodiment, a suspension or hairy root or cell suspension culture of one or more yeast strains may be established.
Another embodiment of the inventive technology may include systems and methods for high level production of modified cannabinoid compounds. In one embodiment, a suspension or hairy root culture of one or more tobacco plant strains may be established. It should be noted that the term strain may refer to a plant strain, as well as a cell culture, or cell line derived from a tobacco plant. In one preferred embodiment, a suspension or hairy root culture of BY2 tobacco cells may be established in a fermenter or other similar apparatus. In an alternative embodiment, a suspension or hairy root culture of Nicotiana tabacum and/or Nicotiana benthamiana plant may be established in a fermenter or other similar apparatus. It should be noted that the use of N. tabacum and N. benthamiana in these embodiments is exemplary only. For example, in certain other embodiments, various Nicotiana strains, mixes of strains, hybrids of different strains or clones, as well as different varieties may be used to generate a cell suspension or hairy root culture.
In certain cases, such fermenters may include large industrial-scale fermenters allowing for a large quantity of tobacco cells to be cultured. In this embodiment, harvested cannabinoids may be introduced to this suspension culture, and modified as generally described herein. Similarly, such cultured growth of tobacco cells may be continuously sustained with the continual addition of nutrient and other growth factors being added to the culture. Such features may be automated or accomplished manually.
Another embodiment of the invention may include the production of genetically modified yeast and/or tobacco cells to express varying exogenous and/or endogenous genes that may modify the chemical structure of cannabinoid compounds. Such transgenic strains may be configured to produce and/or modify large quantities of cannabinoid compounds generally, as well as targeted increases in the production of specific cannabinoids such as THC, Cannabidiol (CBD) or Cannabinol (CBN) and the like.
Additional embodiments of the inventive technology may include novel systems, methods and compositions for the production and in vivo modification of cannabinoid compounds in a plant and/or yeast suspension culture system. In certain embodiments, these in vivo modifications may lead to the production of different forms of cannabinoids with special properties, e.g. water-soluble, slow-release cannabinoids or prodrugs. In one preferred embodiment, the inventive technology may include novel systems, methods and compositions for the hydroxylation, acetylation and/or glycosylation. Modified cannabinoids can be made water-soluble, for example by glycosylation.
As noted above, production and/or accumulation of high-levels of cannabinoids would be toxic for a plant cell host. As such, one embodiment of the inventive technology may include systems and methods to transiently modify cannabinoids in vivo. One aim of the current invention may include the use of cytochrome P450's (CYP) monooxygenases to transiently modify or functionalize the chemical structure of the cannabinoids. CYPs constitute a major enzyme family capable of catalyzing the oxidative biotransformation of many pharmacologically active chemical compounds and other lipophilic xenobiotics. For example, as shown in
Several cannabinoids, including THC, have been shown to serve as a substrate for human CYPs (CYP2C9 and CYP3A4). Similarly, CYPs have been identified that metabolize cannabidiol (CYPs 2C19, 3A4); cannabinol (CYPs 2C9, 3A4); JWH-018 (CYPs 1A2, 2C9); and AM2201 (CYPs 1A2, 2C9). For example, as shown generally in
As such, another embodiment of the invention may include the creation of a yeast or plant cell culture that may be transformed with artificially created genetic constructs encoding one or more exogenous CYPs. In one preferred embodiment, genes encoding one or more non-human isoforms and/or analogs, as well as possibly other CYPs that may functionalize cannabinoids, may be expressed in transgenic yeast or tobacco cells. In another preferred embodiment, genes encoding one or more non-human isoforms and/or analogs, as well as possibly other CYPs that may functionalize cannabinoids, may be expressed in transgenic yeast tobacco strains grown in a suspension culture. Additional embodiments may include genetic control elements such as promotors and/or enhancers as well as post-transcriptional regulatory elements that may also be expressed such that the presence, quantity and activity of any CYPs present in the suspension culture may be modified and/or calibrated.
Another embodiment of the invention may include the creation of a tobacco or yeast cells may be transformed with artificially created genetic constructs encoding one or more exogenous CYPs. In one preferred embodiment, genes encoding one or more non-human isoforms and/or analogs, as well as possibly other CYPs that may functionalize cannabinoids introduced to a transgenic tobacco cell and/or yeast suspension culture.
Another aim of the invention may be to further modify, in vivo, cannabinoids and/or already functionalized cannabinoids. In a preferred embodiment, glycosylation of cannabinoids and/or functionalized cannabinoids may covert to them into a water-soluble form. In an exemplary embodiment shown in
Yet another embodiment of the current invention may include the in vivo conversion of a functionalized cannabinoid, in this example a carboxylic acid form of the cannabinoid, to a glycosylated form of cannabinoid that may be both water-soluble and non-toxic to the cell host. These chemical modifications may allow for greater levels of cannabinoid accumulation in a plant or yeast cell culture without the deleterious cytotoxic effects that would be seen with unmodified cannabinoids due to this water-solubility.
Another embodiment of the invention may include the generation of transgenic or genetically modified strains/cells of yeast and/or tobacco, having artificial genetic constructs that may express one or more genes that may increase cannabinoids solubility and/or decrease cannabinoid cytotoxicity. For example, the inventive technology may include the generation of transgenic plant and/or yeast cell lines having artificial genetic constructs that may express one or more endogenous/or exogenous glycosyltransferases or other enzymes capable of glycosylating cannabinoid compounds. For example, in one embodiment one or more exogenous glycosyltransferases from tobacco or other non-cannabis plants may be introduced into a cannabis plant or cell culture and configured to glycosylate cannabinoids in vivo.
In an additional embodiment, of the inventive technology may include the generation of artificial genetic constructs having genes encoding one or more glycosyltransferases, including non-human analogues of those described herein as well as other isoforms, that may further may be expressed in transgenic plant and/or yeast cells which may further be grown in a suspension culture. Additional embodiments may include genetic control elements such as promotors and/or enhancers as well as post-transcriptional regulatory control elements that may also be expressed in such transgenic cell systems such that the presence, quantity and activity of any glycosyltransferases present in the suspension culture may be regulated.
An additional embodiment of the invention may include artificial genetic constructs having one or more genes encoding one or more UDP- and/or ADP-glycosyltransferases having localization sequences or domains that may assist in the movement of the protein to a certain portion of the cell, such as the cellular locations were cannabinoids and/or functionalized cannabinoids may be modified, produced, stored, and/or excreted from the cell.
An additional embodiment of the invention may include artificial genetic constructs having one or more genes encoding one or more UDP- and/or ADP-glycosyltransferases being co-expressed with one or more exogenous genes that may assist in the movement of the protein to a certain portion of the cell, such as the cellular locations were cannabinoids and/or functionalized cannabinoids may be stored, and/or excreted from the cell.
One preferred embodiment of the inventive technology may include the high level in vivo production of water-soluble, glycosylated cannabinoids, generally being referred to as transiently modified cannabinoids that may be harvested from a plant and/or yeast cell culture. In one embodiment, transiently modified cannabinoids may accumulate within the cell that is part of a suspension culture. In this example, the cell culture may be allowed to grow to a desired level of cell or optical density, or in other instances until a desired level of transiently modified cannabinoids have accumulated in the cultured plant or yeast cells. Such exogenous genes may be localized, for example to the cytosol as generally described herein, and may further be co-expressed with other exogenous genes that may reduce cannabinoid biosynthesis toxicity and/or facilitate cannabinoid transport through, or out of the cell.
All or a portion of the cultured plant and/or yeast cells containing the accumulated transiently modified cannabinoids may then be harvested from the culture, which in a preferred embodiment may be an industrial-scale fermenter or other apparatus suitable for the large-scale culturing of plant cells. The harvested Cannabis cells may be lysed such that the accumulated transiently modified cannabinoids may be released to the surrounding lysate. Additional steps may include treating this lysate. Examples of such treatment may include filtering or screening this lysate to remove extraneous plant material as well as chemical treatments to improve later cannabinoid yields.
Another embodiment of inventive technology may include the high level in vivo generation of water-soluble, glycosylated cannabinoids, generally being referred to as transiently modified cannabinoids that may be harvested from a plant and/or yeast cell culture. In one embodiment, cannabinoids may be introduced to a non-cannabinoid producing plant and/or yeast cell culture, such as BY2 tobacco cells. In this preferred embodiment, the non-cannabinoid producing cell culture may be genetically modified to express one or more endogenous or exogenous genes that may modify the cannabinoids, for example through hydroxylation, acetylation and/or glycosylation. Such endogenous or exogenous genes may be localized, as generally described herein, and may further be co-expressed with other exogenous genes that may reduce cannabinoid biosynthesis toxicity and/or facilitate cannabinoid transport through, or out of the cell into a surrounding media.
This non-cannabinoid producing the cell culture may be allowed to grow to a desired level of cell or optical density, or in other instances until a desired level of transiently modified cannabinoids have accumulated in the cultured cells. In one embodiment, all or a portion of the BY2 and/or yeast cells containing the accumulated cannabinoids may then be harvested from the culture, which in a preferred embodiment may be an industrial-scale fermenter or other apparatus suitable for the large-scale culturing of cells. The harvested cells may be lysed such that the accumulated transiently modified cannabinoids may be released to the surrounding lysate. Additional steps may include treating this lysate. Examples of such treatment may include filtering or screening this lysate to remove extraneous material as well as chemical treatments to improve later cannabinoid yields.
Another embodiment of the inventive technology may include methods to isolate and purified transiently modified cannabinoids from a plant or suspension culture. In one preferred embodiment, a plant and/or yeast cell culture lysate may be generated and processed utilizing affinity chromatography or other purification methods. In this preferred embodiment, an affinity column having a ligand or protein receptor configured to bind with the transiently modified cannabinoids, for example through association with a glycosyl or glucuronic acid functional group among others, may be immobilized or coupled to a solid support. The lysate may then be passed over the column such that the transiently modified cannabinoids, having specific binding affinity to the ligand become bound and immobilized. In some embodiments, non-binding and non-specific binding proteins that may have been present in the lysate may be removed. Finally, the transiently modified cannabinoids may be eluted or displaced from the affinity column by, for example, a corresponding sugar or other compound that may displace or disrupt the cannabinoid-ligand bond. The eluted transiently modified cannabinoids may be collected and further purified or processed.
One embodiment of the invention may include the generation of transiently modified cannabinoids that may be passively and/or actively excreted from a cultured plant and/or yeast cell. In one exemplary model, an exogenous ATP-binding cassette transporter (ABC transporters) or other similar molecular structure may recognize the glycosyl or glucuronic acid functional group (conjugate) on the transiently modified cannabinoid and actively transport it across the cell wall/membrane and into the surrounding media. In this embodiment, the cell culture may be allowed to grow until an output parameter is reached. In one example, an output parameter may include allowing the cell culture to grow until a desired cell/optical density is reach, or a desired concentration of transiently modified cannabinoid is reached. In this embodiment, the culture media containing the transiently modified cannabinoids may be harvested for later cannabinoid extraction. In some embodiments, this harvested media may be treated in a manner similar to the lysate generally described above. Additionally, the transiently modified cannabinoids present in the raw and/or treated media may be isolated and purified, for example, through affinity chromatography in a manner similar to that described above.
In certain embodiments, this purified cannabinoid isolate may contain a mixture of primary and secondary glycosylated cannabinoids. As noted above, such purified glycosylated cannabinoids may be water-soluble and metabolized slower than unmodified cannabinoids providing a slow-release capability that may be desirable in certain pharmaceutical applications, such as for use in tissue-specific applications, or as a prodrug. As such, in one embodiment of the invention, isolated glycosylated cannabinoids may be incorporated into a variety of pharmaceutical and/or nutraceutical applications as well as other compositions of matter outline herein.
For example, the purified glycosylated cannabinoids may be incorporated into various solid and/or liquid delivery vectors for use in pharmaceutical applications. As noted above, these transiently modified cannabinoids may no longer possess their psychoactive component, making their application in research, therapeutic and pharmaceutical applications especially advantageous. For example, the treatment of children may be accomplished through administration of a therapeutic dose of isolated and purified transiently modified cannabinoids, without the undesired psychoactive effect. Additional therapeutic applications may include the harvesting and later administration of a therapeutic dose of an “entourage” of isolated and purified transiently modified cannabinoids.
Another embodiment of the invention may include a system to convert or reconstitute transiently modified cannabinoids. In one preferred embodiment, glycosylated cannabinoids may be converted into non-glycosylated cannabinoids through their treatment with one or more generalized or specific glycosidases. The use and availability of glycosidase enzymes would be recognized by those in the art without requiring undue experimentation. In this embodiment, these glycosidase enzymes may remove a sugar moiety. Specifically, these glycosidases may remove the glycosyl or glucuronic acid moiety reconstituting the cannabinoid compound to a form exhibiting psychoactive activity. This reconstitution process may generate a highly purified “entourage” of primary and secondary cannabinoids. These reconstituted cannabinoid compounds may also be incorporated into various solid and/or liquid delivery vectors for use in a variety of pharmaceutical and other commercial applications.
As noted above, in one embodiment of the invention, cannabinoid producing strains of Cannabis, as well as other plants may be utilized with the inventive technology. In certain preferred embodiments, in lieu of growing the target cannabinoid producing plant in a cell culture, the raw plant material may be harvested and undergo cannabinoid extraction utilizing one or more of the methods described herein. These traditionally extracted cannabinoids may then be modified from their native forms through the in vitro application of one or more CYP's that may generate hydroxyl and carboxylic acid forms of these cannabinoids respectively. These functionalized cannabinoids may be further modified through the in vitro application of one or more glycosyltransferases as generally described herein. In this embodiment, the new transiently modified cannabinoids may be isolated and purified through a process of affinity chromatography, or other extraction protocol, and then applied to various commercial and other therapeutic uses. In other embodiments, the transiently modified cannabinoids may be restored and reconstituted through the in vitro application of one or more glycosidase enzymes. These restored cannabinoids may also be applied to various commercial and other therapeutic uses.
Another embodiment of the invention may include the use of other non-cannabinoid producing plants in lieu of growing a cannabinoid producing plant in a cell culture. Here, cannabinoid may be introduced to genetically modified plants, or plant cell cultures that express one or more CYP's that may generate hydroxyl and carboxylic acid forms of these cannabinoids respectively. These functionalized cannabinoids may be further modified through the action of one or more glycosidases that may also be expressed in the non-cannabinoid producing plant or cell culture. In one preferred embodiment, a non-cannabinoid producing cell culture may include tobacco plant or tobacco cell cultures. Additional embodiments may similarly use genetically modified yeast cells grown in culture to generate biomodified cannabinoid compounds.
One embodiment of the invention may include an in vivo method of trichome-targeted cannabinoid accumulation and modification. One preferred embodiment of this in vivo system may include the creation of a recombinant protein that may allow the translocation of a CYP or glycosyltransferases to a site of extracellular cannabinoid synthesis in a whole plant. More specifically, in this preferred embodiment, one or more CYPs or glycosyltransferases may either be engineered to express all or part of the N-terminal extracellular targeting sequence as present in cannabinoid synthase protein, such as THCA synthase or CBDA synthase.
One another embodiment of the invention may include an in vivo method of high-level trichome-targeted cannabinoid biosynthesis, accumulation and/or modification. One preferred embodiment of this in vivo system may include the creation of a recombinant protein that may allow the translocation of a catalase to a site of extracellular cannabinoid synthesis in a whole plant. More specifically, in this preferred embodiment, one or more catalase enzymes may either be engineered to express all or part of the N-terminal extracellular targeting sequence as present in cannabinoid synthase protein, such as THCA synthase or CBDA synthase. In this embodiment, the catalase may be targeted to the site of cannabinoid biosynthesis allowing it to more efficiently neutralize hydrogen peroxide byproducts.
Another aim of the current invention may include the introduction of one or more compounds to facilitate the chemical decomposition of hydrogen peroxide resulting from cannabinoids biosynthesis. In one embodiment, one or more chemicals, metal ions, and/or catalysts may be introduced into a growth media to detoxify hydrogen peroxide (H2O2) in both yeast and plant cell cultures. Examples may include magnesium dioxide (MnO2), permanganate ionMnO4, and silver ion (Ag+), iron oxide, (Fe2O3), lead dioxide (PbO2), cupric oxide (CuO), Hafnium(IV) oxide (HfO2), ceric dioxide (CeO2), Gadolinium trioxide (Gd2O3), Sodium Phosphate, Tribasic (NaPO4), iodide ions, manganese metal, iron(III) Chloride Solution (FeCl3). Such chemicals, ions, and/or catalyst may be added directly, or in solution to a cell culture. The amount may be dependent on the amount of hydrogen peroxide present which may be determined through a variety of established assays. As such, determinations of the optimal amounts are within the skill of those in the art.
In this preferred embodiment, this N-terminal trichome targeting sequence or domain may generally include the first 28 amino acid residues of a generalized synthase. An exemplary trichome targeting sequence for THCA synthase is identified SEQ ID NO. 40, while trichome targeting sequence for CBDA synthase is identified SEQ ID NO. 41. This extracellular targeting sequence may be recognized by the plant cell and cause the transport of the glycosyltransferase from the cytoplasm to the plant's trichrome, and in particular the storage compartment of the plant trichrome where extracellular cannabinoid glycosylation may occur. More specifically, in this preferred embodiment, one or more glycosyltransferases, such as UDP glycosyltransferase may either be engineered to express all or part of the N-terminal extracellular targeting sequence as present in an exemplary synthase enzyme.
Another embodiment of the invention may include an in vivo method of cytosolic-targeted cannabinoid production, accumulation and/or modification. One preferred embodiment of this in vivo system may include the creation of a recombinant protein that may allow the localization of cannabinoid synthases and/or glycosyltransferases to the cytosol.
More specifically, in this preferred embodiment, one or more cannabinoid synthases may be modified to remove all or part of the N-terminal extracellular targeting sequence. An exemplary trichome targeting sequence for THCA synthase is identified SEQ ID NO. 40, while trichome targeting sequence for CBDA synthase is identified SEQ ID NO. 41. Co-expression with this cytosolic-targeted synthase with a cytosolic-targeted CYP or glycosyltransferase, may allow the localization of cannabinoid synthesis, accumulation and modification to the cytosol. Such cytosolic target enzymes may be co-expressed with catalase, ABC transporter or other genes that may reduce cannabinoid biosynthesis toxicity and or facilitate transport through or out of the cell.
Another embodiment of the invention may include the generation of an expression vector comprising this polynucleotide, namely a cannabinoid synthase N-terminal extracellular targeting sequence and glycosyltransferase genes, operably linked to a promoter. A genetically altered plant or parts thereof and its progeny comprising this polynucleotide operably linked to a promoter, wherein said plant or parts thereof and its progeny produce said chimeric protein, is yet another embodiment. For example, seeds and pollen contain this polynucleotide sequence or a homologue thereof, a genetically altered plant cell comprising this polynucleotide operably linked to a promoter such that said plant cell produces said chimeric protein. Another embodiment comprises a tissue culture comprising a plurality of the genetically altered plant cells.
Another embodiment of the invention provides for a genetically altered plant or cell expressing a chimeric or fusion protein having a cannabinoid synthase N-terminal extracellular targeting sequence (see i.e., SEQ ID: 40-41; see also SEQ ID NO. 42 for full amino acid sequence of THCA synthase) coupled with a UDP glycosyltransferase genes, operably linked to a promoter. Another embodiment provides a method for constructing a genetically altered plant or part thereof having glycosylation of cannabinoids in the extracellular storage compartment of the plant's trichrome compared to a non-genetically altered plant or part thereof, the method comprising the steps of: introducing a polynucleotide encoding the above protein into a plant or part thereof to provide a genetically altered plant or part thereof, wherein said chimeric protein comprising a first domain, a second domain, and wherein said first domain comprises a cannabinoid synthase N-terminal extracellular targeting sequence, and a second domain comprises a glycosyltransferase sequence. These domains may be separated by a third domain or linker. This linker may be any nucleotide sequence that may separate a first domain from a second domain such that the first domain and the second domain can each fold into its appropriate three-dimensional shape and retain its activity.
One preferred embodiment of the invention may include a genetically altered plant or cell expressing a cytosolic-targeted cannabinoid synthase protein having a cannabinoid synthase N-terminal extracellular targeting sequence (SEQ IDs. 40-41) inactivated or removed. In one embodiment, a cytosolic targeted THCA synthase (ctTHCAs) may be identified as SEQ ID NO. 46, while in another embodiment cytosolic targeted CBDA synthase (cytCBDAs) is identified as SEQ ID NO. 22-23). Such cytosolic-targeted cannabinoid synthase protein may be operably linked to a promoter. Another embodiment provides a method for constructing a genetically altered plant or part thereof having glycosylation of cannabinoids in the plant's cytosol compared to a non-genetically altered plant or part thereof, the method comprising the steps of: introducing a polynucleotide encoding the above protein into a plant or part thereof to provide a genetically altered plant or part thereof, wherein said a cannabinoid synthase N-terminal extracellular targeting sequence has been disrupted or removed.
Yet another embodiment of the invention may include an in vivo method of cannabinoid glycosylation in a cannabis cell culture. In one preferred embodiment, to facilitate glycosylation of cannabinoids in cannabis cell culture, which would lack an extracellular trichrome structure, a cannabinoid synthase gene may be genetically modified to remove or disrupt, for example through a directed mutation, the extra-cellular N-terminal targeting domain which may then be used to transform a Cannabis plant cell in a cell culture. In this embodiment, without this targeting domain the cannabinoid synthase, for example THCA or CBDA synthases, may remain within the plant cell, as opposed to being actively transported out of the cell, where it may be expressed with one or more glycosyltransferases, such as UDP glycosyltransferase in the cytoplasm.
Another embodiment of the inventive technology may include systems and methods for enhanced production and/or accumulation of cannabinoid compounds in an in vivo system. In one preferred embodiment, the invention may include the generation of a genetically modified or transgenic Cannabis plant that may produce and/or accumulate one or more cannabinoids at higher than wild-type levels. In one embodiment, a transgenic Cannabis plant may be generated to express one or more Cannabis sativa transcription factors that may enhance the cannabinoid metabolic pathway(s). In one preferred embodiment, a polynucleotide may be generated that encodes for one or more Cannabis sativa myb transcription factors genes, and/or one or more exogenous ortholog genes that enhance the metabolite flux through the cannabinoid biosynthetic pathway.
In this preferred embodiment, a polynucleotide may be generated that encodes for one or more Cannabis sativa myb transcription factors genes, such as CAN833 and/or CAN738 that. As shown in
In one preferred embodiment, the invention may include methods of generating a polynucleotide that expresses one or more of the SEQ IDs related to enhanced cannabinoid production identified herein. In certain preferred embodiments, the proteins of the invention may be expressed using any of a number of systems, such as in whole plants, as well as plant cell and/or yeast suspension cultures. Typically, the polynucleotide that encodes the protein or component thereof is placed under the control of a promoter that is functional in the desired host cell. An extremely wide variety of promoters may be available and can be used in the expression vectors of the invention, depending on the particular application. Ordinarily, the promoter selected depends upon the cell in which the promoter is to be active. Other expression control sequences such as ribosome binding sites, transcription termination sites and the like are also optionally included. Constructs that include one or more of these control sequences are termed “expression cassettes” or “constructs.” Accordingly, the nucleic acids that encode the joined polypeptides are incorporated for high level expression in a desired host cell.
Additional embodiments of the invention may include selecting a genetically altered plant or part thereof that expresses the cannabinoid production transcription factor protein, wherein the expressed protein has increased cannabinoid biosynthesis capabilities. In certain embodiments, a polynucleotide encoding the cannabinoid production transcription factor protein is introduced via transforming said plant with an expression vector comprising said polynucleotide operably linked to a promoter. The cannabinoid production transcription factor protein may comprise a SEQ ID selected from the group consisting of SEQ ID NO: 11-2 or 43-45, or a homologue thereof.
As noted above, one embodiment of the invention may include systems and methods for general and/or localized detoxification of cannabinoid biosynthesis in an in vivo system. In one preferred embodiment, the invention may include the generation of a genetically modified or transgenic Cannabis or other plant that may be configured to be capable of detoxifying hydrogen peroxide by-products resulting from cannabinoid biosynthesis at higher than wild-type levels. In addition, this detoxification may be configured to be localized to the cytosol and/or trichome structure of the Cannabis plant where cannabinoids are actively being synthesized in a whole plant system. In this preferred embodiment of the invention, a transgenic plant, such as a cannabis or tobacco plant or cell, that express one or more genes that may up-regulate hydrogen peroxide detoxification. In an alternative embodiment, the invention may include the generation of a genetically modified plant cell and/or yeast cell suspension cultures that may be configured to be capable of expressing an exogenous catalase, or over expressing an endogenous catalase or both. In this example, the catalase expressed in the plant and/or yeast cell culture may act to detoxify hydrogen peroxide by-products resulting from cannabinoid biosynthesis at higher than wild-type levels. In some embodiment, the catalase expressed in a plant, and/or plant cell or yeast cell culture may be heterologous or exogenous, while in other embodiments, it may be an endogenous catalase that may be operably linked to a promoter to allow constitutive, inducible, and/or overexpression.
In one preferred embodiment, a polynucleotide may be generated that encodes for one or more endogenous and/or exogenous transcription catalase genes, and/or orthologs that catalyze the reduction of hydrogen peroxide:
As such, in one embodiment, the invention comprises the generation of a polynucleotide encoding an exogenous catalase protein that may be expressed within a transformed plant and/or cell culture. In a preferred embodiment, a catalase enzyme configured reduce hydrogen peroxide (H2O2) generated during cannabinoid synthesis may be used to transform a cannabis or other plant, such as a tobacco plant. While a number of generic catalase enzymes may be included in this first domain, as merely one exemplary model, a first domain may include an exogenous catalase derived from Arabidopsis (SEQ ID NO. 13-14; see also
Another embodiment of the current invention may include localization of the catalase enzyme to a trichome structure. As generally outlined above, in this embodiment a trichome targeting sequence from a cannabinoid synthase may be coupled with one or more catalase enzymes in a fusion or chimera—the terms being generally interchangeable in this application. This artificial trichome-target catalase gene may be used to transform a plant having trichome structures, such as Cannabis or tobacco. In a preferred embodiment, a trichome-targeted catalase from Arabidopsis thaliana with a THCA synthase trichome targeting domain is identified as SEQ ID NO. 47, while a trichome-targeted catalase Arabidopsis thaliana with a CBDA synthase trichome targeting domain is identified as SEQ ID NO. 48. In another embodiment, a trichome-targeted catalase from Escherichia coli with a THCA synthase trichome targeting domain is identified as SEQ ID NO. 49, while a trichome-targeted catalase Escherichia coli with a CBDA synthase trichome targeting domain is identified as SEQ ID NO. 50.
Another embodiment of the invention comprises generating a polynucleotide of a nucleic acid sequence encoding the chimeric/fusion catalase protein. Another embodiment includes an expression vector comprising this polynucleotide operably linked to a promoter. A genetically altered plant or parts thereof and its progeny comprising this polynucleotide operably linked to a promoter, wherein said plant or parts thereof and its progeny produce said fusion protein is yet another embodiment. For example, seeds and pollen contain this polynucleotide sequence or a homologue thereof, a genetically altered plant cell comprising this polynucleotide operably linked to a promoter such that said plant cell produces said chimeric protein. Another embodiment comprises a tissue culture comprising a plurality of the genetically altered plant cells.
In a preferred embodiment, a polynucleotide encoding a trichome-targeted fusion protein may be operably linked to a promoter that may be appropriate for protein expression in a Cannabis, tobacco or other plant. Exemplary promotors may include, but not be limited to: a non-constitutive promotor; an inducible promotor, a tissue-preferred promotor; a tissue-specific promotor, a plant-specific promotor, or a constitutive promotor. In a preferred embodiment, one or more select genes may be operably linked to a leaf-specific gene promotor, such as Cab1. Additional promoters and operable configurations for expression, as well as co-expression of one or more of the selected genes are generally known in the art.
Another embodiment of the invention may provide for a method for constructing a genetically altered plant or part thereof having increased resistance to hydrogen peroxide cytotoxicity generated during cannabinoid synthesis compared to a non-genetically altered plant or part thereof, the method comprising the steps of: introducing a polynucleotide encoding a fusion protein into a plant or part thereof to provide a genetically altered plant or part thereof, wherein said fusion protein comprising a catalase and a trichome-targeting sequence from a cannabinoid synthase.
In one embodiment, the invention may encompass a system to increase overall cannabinoid production and accumulation in trichomes while preventing potential cytotoxicity effects. As generally shown in
Another embodiment of the invention may comprise a combination polynucleotide of a nucleic acid sequence encoding a combination of: 1) a cannabinoid production transcription factor protein, such as a myb gene; and/or a catalase protein, or any homologue thereof, which may further include a trichome targeting or localization signal. A genetically altered plant or parts thereof and its progeny comprising this combination polynucleotide operably linked to a promoter, wherein said plant or parts thereof and its progeny produce said protein is yet another embodiment. For example, seeds and pollen contain this polynucleotide sequence or a homologue thereof, a genetically altered plant cell comprising this polynucleotide operably linked to a promoter such that said plant cell produces said proteins. Another embodiment comprises a tissue culture comprising a plurality of the genetically altered plant cells.
Another embodiment of the invention may provide for a method for constructing a genetically altered plant or part thereof having: 1) increased cannabinoid production compared to a non-genetically altered plant or part thereof; and/or 2) increased resistance to hydrogen peroxide cytotoxicity generated during cannabinoid synthesis compared to a non-genetically altered plant or part thereof, the method comprising the steps of: introducing a combination polynucleotide into a plant or part thereof to provide a genetically altered plant or part thereof.
Additional embodiments of the invention may include selecting a genetically altered plant or part thereof that expresses one or more of the proteins, wherein the expressed protein(s) may have: 1) increased cannabinoid production capabilities, for example through overexpression of an endogenous myb gene; and 2) catalase with/or without a trichome localization capability, or any combination thereof. In certain embodiments, a combination polynucleotide encoding the proteins is introduced via transforming said plant with an expression vector comprising said combination polynucleotide operably linked to a promoter. The cannabinoid production transcription factor protein may comprise a SEQ ID selected from the sequences identified herein, or homologues thereof. Naturally, such combinations and expression combination strategies, such identified in Tables 7-8, 10 below and elsewhere, are exemplary, as multiple combinations of the elements as herein described is included in the invention.
In one preferred embodiment, the inventive technology may include systems, methods and compositions high levels of in vivo cannabinoid hydroxylation, acetylation and/or glycosylation and/or a combination of all three. In a preferred embodiment, the in vivo cannabinoid hydroxylation, acetylation and/or glycosylation and/or a combination of all three may occur in a cannabinoid-producing plant or cell culture system. While in alternative embodiments may include a non-cannabinoid producing plant or cell culture system such as a tobacco plant, like N. benthamiana, or a yeast cell culture.
In one embodiment, the invention may include a cannabinoid production, accumulation and modification system. In one preferred embodiment, a plant, such as cannabis or tobacco, as well as a yeast cell, may be genetically modified to express one or more heterologous cytochrome P450 genes. In this preferred embodiment, a heterologous cytochrome P450 (CYP3A4) SEQ ID NO. 1 may be expressed in a cannabinoid-producing plant or cell culture system. While in alternative embodiments, a heterologous human cytochrome P450 (CYP3A4) may be expressed non-cannabinoid producing plant or cell culture system such as a tobacco plant, like N. benthamiana or a yeast cell, such a P. pastoris. In this embodiment, the overexpression of a heterologous human cytochrome P450 protein, identified as SEQ ID NO. 2, may functionalize endogenously-created cannabinoids so that they can be more efficiently glycosylated and/or acetylated in vivo, rendering them water-soluble.
In an alternative embodiment, the invention may include a cannabinoid production, accumulation and modification system. In one preferred embodiment, a plant, such as cannabis or tobacco, may be genetically modified to express one or more heterologous cytochrome P450 oxidoreductase genes. In this preferred embodiment, a heterologous cytochrome P450 oxidoreductase (oxred) identified as SEQ ID NO. 3, and SEQ ID NO. 72, identified as an ortholog, may be expressed in a cannabinoid-producing plant or cell culture system. While in alternative embodiments a heterologous human heterologous cytochrome P450 oxidoreductase (oxred) may be expressed non-cannabinoid producing plant or cell culture system such as a tobacco plant, like BY2 tobacco cells, or yeast cells. In this embodiment, the overexpression of a heterologous cytochrome P450 oxidoreductase (oxred) protein, identified as SEQ ID NO. 4, may functionalize endogenously-created cannabinoids so that they can be more efficiently glycosylated and/or acetylated in vivo, rendering them water-soluble.
In one preferred embodiment, a tobacco cell suspension culture may be generated using BY2 cells. Such BY2 cell may express a heterologous cytochrome P450 oxidoreductase (oxred) identified as SEQ ID NO. 3, and/or a heterologous glycosyltransferases, such as GT76G1 (SEQ ID NO. 61). Further, in this embodiment, a BY2 tobacco cell culture may also be genetically modified to express one or more multi-drug ABC transporters, such as ABCG2 (SEQ ID NO. 67). In this embodiment, one or more cannabinoids may be introduced to the genetically modified yeast cells, preferably in in a suspension culture, and may be functionalize and/or directly glycosylated prior to their active transport out of the cell into the surrounding media through the action of an ABC transporter, such as ABCG2. In still further example, a yeast cell may be genetically modified to express an alpha-factor secretion signal to further facilitate secretion of the modified cannabinoids, or cannabinoid precursors out of the yeast cell and into a surrounding media. In this system, one or multiple cannabinoids and/or cannabinoid precursors may be introduced to the yeast cell culture to be modified, for example through an cannabinoid oil or other extract.
It should be noted that in one embodiment, one or more glycosyltransferases may have an affinity for either of the hydroxy groups located at positions 2,4 on the pentylbenzoate/pentlybenzoic ring of a cannabinoid, compound, such a CBDA (2,4-dihydroxy-3-[(6R)-3-methyl-6-(prop-1-en-2-yl)cyclohex-2-en-1-yl]-6-pentylbenzoate) and/or CBGA ((E)-3-(3,7-Dimethyl-2,6-octadienyl)-2,4-dihydroxy-6-pentylbenzoic acid).
On one embodiment, one or more glycosidase inhibitors may be introduced to a plant and/or yeast cell culture as well as a whole plant where the production of glycosylated cannabinoids may be occurring. In one preferred embodiment, one or more of the following glycosidase inhibitors may be utilized: D,L-1,2-Anhydro-myo-inositol (Conduritol B Epoxide (CBE)); 6-Epicastanospermine (Castanospermine); 6-bromocyclohex-4-ene-1,2,3-triol (Bromoconduritol); (+)-1-Deoxynojirimycin (Deoxynojirimycin); 1,5-Dideoxy-1,5-imino-D-sorbitol hydrochloride (1-Deoxynojirimycin Hydrochloride); 1R,2S,3S,4R)-rel-5-Cyclohexene-1,2,3,4-tetrol (Conduritol B); (3R,4R,5R)-5-(Hydroxymethyl)-3,4-piperidinediol (2S,3S)-2,3-Dihydroxybutanedioate (Isofagomine D-Tartrate); O-(D-Glucopyranosylidene)amino N-Phenylcarbamate; and (3S,4S,5R,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)-2-piperidinone (D-Manno-7-lactam). Such glycosidase inhibitors are exemplary only and should not be seen as limiting on the invention in any way.
In an alternative embodiment, a heterologous cytochrome P450 gene may be expressed in a genetically modified yeast strain. For example, heterologous cytochrome P450 (CYP3A4) (SEQ ID NO. 69), and/or CYP oxidoreductase (SEQ ID NO. 71), may be introduced and expressed in to a yeast cell. In this embodiment, such genes may further be codon optimized for expression in yeast. Such a heterologous human cytochrome P450 proteins may functionalize cannabinoids introduced to the yeast cell culture so that they can be more efficiently glycosylated and/or acetylated in vivo, rendering them water-soluble. In this embodiment, such yeast cells may further express one or more heterologous glycosyltransferases, which may further be codon optimized for expression in yeast cells. In one preferred embodiment, the invention may one or more codon optimized heterologous glycosyltransferases from tobacco, including but not limited to: NtGT1 (SEQ ID NO. 51); NtGT2 (SEQ ID NO. 53); NtGT3 (SEQ ID NO. 55); NtGT4 (SEQ ID NO. 57); and NtGT5 (SEQ ID NO. 59).
In one embodiment, the invention may include a cannabinoid production, accumulation and modification system in a non-cannabinoid producing plant. In one preferred embodiment, a plant, such as tobacco, may be genetically modified to express one or more heterologous cytochrome P450 oxidoreductase genes. In this preferred embodiment, a heterologous cytochrome P450 oxidoreductase (oxred) identified as SEQ ID NO. 3 may be expressed in a cannabinoid-producing plant or cell culture system. While in alternative embodiments a heterologous cytochrome P450 oxidoreductase (oxred) may be expressed non-cannabinoid producing plant or cell culture system such as a tobacco plant, like N. benthamiana. In this embodiment, the overexpression of a heterologous cytochrome P450 oxidoreductase (oxred) protein, identified as SEQ ID NO. 4, may help to functionalize cannabinoids introduced to the genetically modified plant or plant cell culture system so that they can be more efficiently glycosylated and/or acetylated, in vivo, rendering them water-soluble.
In a preferred embodiment cytochrome 450 and P450 oxidoreductase are co-expressed. In another embodiment, cytochrome P450 and P450 oxidoreductase may also be expressed as a fusion protein. It should be noted that any nucleic and or amino acid expressed in this system may be expressed single or as a fusion protein,
In another embodiment, the invention may include the expression of one or more exogenous or heterologous, the terms being generally interchangeable, cannabinoid synthase gene in a non-cannabinoid producing plant or plant-cell culture system. In one preferred embodiment, such a gene may include one or more of a CBG, THCA, CBDA or CBCA synthase genes. For example in one embodiment, a Cannabidiolic acid (CBDA) synthase, identified as SEQ ID NO. 5 (gene) or SEQ ID NO. 6 (protein) from Cannabis sativa may use expressed in a non-cannabis-producing plant, such as or plant cell suspension culture of N. benthamiana. In another preferred embodiment, a Tetrahydrocannabinolic acid (THCA) synthase, identified as SEQ ID NO. 42 (gene) from Cannabis sativa may use expressed in a non-cannabis-producing plant, such as a plant cell suspension culture of N. benthamiana.
In another preferred embodiment, such cannabinoid synthase genes expressed in a cannabinoid and/or non-cannabinoid plant or plant-cell suspension culture may be target or localized to certain parts of a cell. For example, in one preferred embodiment, cannabinoid production may be localized to the cytosol allowing cannabinoids to accumulate in the cytoplasm. In one exemplary embodiment, an artificially modified cannabinoids synthase protein may be generated. In this example embodiment, a CBDA synthase may have the trichome targeting sequence remove forming a cytosolic CBDA synthase (cytCBDAs) identified as SEQ ID NO. 22, (gene) or 23 (protein). Alternative embodiments would include generation of other artificial cytosol target synthase genes, such as cytosolic THCA synthase (cytTHCAs) identified as SEQ ID NO. 46 (gene).
These preferred embodiments may be particularly suited for cannabinoid cell-suspension culture cannabinoid expression systems, as such culture systems lack the trichomes present in whole plants. As such, in one preferred embodiment, a cannabinoid producing plant may be transformed to one or more of the artificial cytosolic targeted cannabinoid synthase genes lacking a trichome-targeting signal. In an alternative embodiment, such artificial cytosolic targeted cannabinoid synthase genes may be expressed in a cannabinoid producing plant suspension culture where the corresponding endogenous wild-type synthase gene has been inhibited and/or knocked out.
In one embodiment, the invention may include a cannabinoid production, accumulation and modification system that may generate water-soluble cannabinoids. In one preferred embodiment, a plant, such as cannabis or tobacco, may be genetically modified to express one or more heterologous glycosyltransferase genes, such as UDP glycosyltransferase. In this preferred embodiment, UDP glycosyltransferase (76G1) (SEQ ID NO. 7) (gene)/SEQ ID NO. 8 (protein) from Stevia rebaudiana may be expressed in cannabinoid producing plant or cell suspension culture. In a preferred embodiment, the cannabinoid producing plant or cell suspension culture may be Cannabis. In another embodiment, one or more glycosyltransferase from Nicotiana tabacum and/or a homologous glycosyltransferase from Nicotiana benthamiana, may be expressed in a cannabinoid-producing plant, such as cannabis, or may be over-expressed in an endogenous plant and/or plant cell culture system. In a preferred embodiment, a glycosyltransferase gene and/or protein may be selected from the exemplary plant, such as Nicotiana tabacum Such glycosyltransferase gene and/or protein may include, but not limited to: Glycosyltransferase (NtGT5a) Nicotiana tabacum (SEQ ID NO. 26) (Amino Acid); Glycosyltransferase (NtGT5a) Nicotiana tabacum (SEQ ID NO. 27) (DNA); Glycosyltransferase (NtGT5b) Nicotiana tabacum (SEQ ID NO. 28) (Amino Acid); Glycosyltransferase (NtGT5b) Nicotiana tabacum (SEQ ID NO. 29) (DNA); UDP-glycosyltransferase 73C3 (NtGT4) Nicotiana tabacum (SEQ ID NO. 30) (Amino Acid); UDP-glycosyltransferase 73C3 (NtGT4) Nicotiana tabacum (SEQ ID NO. 31) (DNA); Glycosyltransferase (NtGT1b) Nicotiana tabacum (SEQ ID NO. 32) (Amino Acid); Glycosyltransferase (NtGT1b) Nicotiana tabacum (SEQ ID NO. 33) (DNA); Glycosyltransferase (NtGTla) Nicotiana tabacum (SEQ ID NO. 34) (Amino Acid); Glycosyltransferase (NtGTla) Nicotiana tabacum (SEQ ID NO. 35) (DNA); Glycosyltransferase (NtGT3) Nicotiana tabacum (SEQ ID NO. 36) (Amino Acid); Glycosyltransferase (NtGT3) Nicotiana tabacum (SEQ ID NO. 37) (DNA); Glycosyltransferase (NtGT2) Nicotiana tabacum (SEQ ID NO. 38) (Amino Acid); and/or Glycosyltransferase (NtGT2) Nicotiana tabacum (SEQ ID NO. 39) (DNA). The sequences from Nicotiana tabacum are exemplary only as other tobacco and non-tobacco glycosyltransferase may be used.
As noted above, such glycosyltransferases may glycosylate the cannabinoids and/or functionalized cannabinoids in a plant or plant cell suspension culture as generally described here. Naturally, other glycosyltransferase genes from alternative sources may be included in the current invention.
As noted above, in one embodiment, one or more glycosyltransferases may be targeted or localized to a portion of the plant cell. For example, in this preferred embodiment, cannabinoid glycosylation may be localized to the trichome allowing cannabinoids to accumulate at higher-then wild-type levels in that structure. In one exemplary embodiment, an artificially modified glycosyltransferase may be generated. In this example embodiment, a UDP glycosyltransferase (76G1) may be fused with a trichome-targeting sequence at its N-terminal tail. This trichome targeting sequence may be recognized by the cell and cause it to be transported to the trichome. This artificial gene construct is identified as SEQ ID NO. 19 (gene), or SEQ ID NO. 20 (protein). In one embodiment, a trichome targeting sequence or domain may be derived from any number of synthases. For example, in one embodiment a THCA Synthase Trichome domain (SEQ ID NO. 40) may be coupled with a glycosyltransferase as generally described above. Moreover, in another example, a CBDA Synthase Trichome targeting domain (SEQ ID NO. 41) may be coupled with a glycosyltransferase as generally described above.
In one embodiment, the inventive technology may include the in vivo generation of one or more cannabinoid glucuronides. As also noted above, UDP-glucuronosyltransferases catalyze the transfer of the glucuronosyl group from uridine 5′-diphospho-glucuronic acid (UDP-glucuronic acid) to substrate molecules that contain oxygen, nitrogen, sulfur or carboxyl functional groups. Glucuronidation of a compound, such as a cannabinoid may modulate the bioavailability, activity, and clearance rate of a compound. As such, in one embodiment, the invention may include a cannabinoid production, accumulation and modification system that may generate water-soluble cannabinoid glucuronides. In one preferred embodiment, a plant, such as cannabis or tobacco, or another eukaryotic cell, such as yeast, may be genetically modified to express one or more endogenous and/or heterologous UDP-glucuronosyltransferases. Such a UDP-glucuronosyltransferases may be expressed in cannabinoid producing plant, non-cannabinoid producing plant, cell suspension culture, or yeast culture. Non-limiting examples of UDP-glucuronosyltransferases may include UGT1A1, UGT1A3, UGT1A4, UGT1A6, UGT1A7, UGT1A8, UGT1A9, UGT1A1O, UGT2B4, UGT2B7, UGT2BI5, and UGT2BI7—there nucleotide and amino acid sequences being generally know to those of ordinary skill in the art. These UDP-glucuronosyltransferases may be a recombinant UDP-glucuronosyltransferases. In additional embodiments, a UDP-glucuronosyltransferase may be codon optimized for expression in, for example yeast. Methods of making, transforming plant cells, and expressing recombinant UDP-glucuronosyltransferases are known in the art. In a preferred embodiment, the cannabinoid producing plant or cell suspension culture may be cannabis. In another embodiment, one or more UDP-glucuronosyltransferases and/or a homolog/ortholog of a UDP-glucuronosyltransferase, may be expressed in a cannabinoid-producing plant, such as cannabis, or may be over-expressed in an endogenous plant and/or plant cell culture system or in yeast. In a preferred embodiment, a UDP-glucuronosyltransferase may be targeted or localized to a portion of the plant cell. For example, in this preferred embodiment, cannabinoid glucuronidation may be localized to the trichome allowing cannabinoids to accumulate at higher-then wild-type levels in that structure. In one exemplary embodiment, an artificially modified UDP-glucuronosyltransferase may be generated. In this embodiment, a UDP-glucuronosyltransferase may be fused with a trichome-targeting sequence at its N-terminal tail. This trichome targeting sequence may be recognized by the cell and cause it to be transported to the trichome. In one embodiment, a trichome targeting sequence or domain may be derived from any number of synthases. For example, in one embodiment a THCA Synthase trichome domain (SEQ ID NO. 40) may be coupled with a UDP-glucuronosyltransferase as generally described above. Moreover, in another example, a CBDA Synthase trichome targeting domain (SEQ ID NO. 41) may be coupled with a UDP-glucuronosyltransferase as generally described above. In another embodiment, a UDP-glucuronosyltransferase may further be targeted to the cytosol as generally described herein.
In another embodiment, invention may include an embodiment where transiently modified cannabinoids may be passively and/or actively excreted from a cell or into a cell wall. In one exemplary model, an exogenous ATP-binding cassette transporter (ABC transporters or ABCt) or other similar molecular structure may recognize the glycosyl or glucuronic acid or acetyl functional group (conjugate) on the transiently modified cannabinoid and actively transport it across the cell wall/membrane and into the surrounding media.
In one embodiment, a plant may be transformed to express a heterologous ABC transporter. In this embodiment, an ABCt may facilitate cannabinoid transport outside the cells in suspension cultures, such as a cannabis or tobacco cell suspension culture. In this preferred embodiment, a human multi-drug transported (ABCG2) may be expressed in a plant cell suspension culture of the same respectively. ABCG2 is a plasma membrane directed protein and may further be identified as SEQ ID NO. 9 (gene), or 10 (protein).
Generally, a trichome structure, such as in Cannabis or tobacco, will have very little to no substrate for a glycosyltransferase enzyme to use to effectuate glycosylation. To resolve this problem, in one embodiment, the invention may include systems, methods and compositions to increase substrates for glycosyltransferase, namely select sugars in a trichome. In one preferred embodiment, the invention may include the targeted or localization of sugar transport to the trichome. In this preferred embodiment, an exogenous or endogenous UDP-glucose/UDP-galactose transporter (UTR1) may be expressed in a trichome producing plant, such as cannabis or tobacco and the like. In this embodiment, the UDP-glucose/UDP-galactose transporter (UTR1) may be modified to include a plasma-membrane targeting sequence and/or domain. With this targeting domain, the UDP-glucose/UDP-galactose transporter (UTR1) may allow the artificial fusion protein to be anchored to the plasma membrane. In this configuration, sugar substrates from the cytosol may pass through the plasma membrane bound UDP-glucose/UDP-galactose transporter (PM-UTR1) into the trichome. In this embodiment, substrates for glycosyltransferase may be localized to the trichome and allowed to accumulate further allowing enhanced glycosylation of cannabinoids in the trichome. In one example, SEQ ID NO. 21 is identified as the polynucleotide gene sequence for a heterologous UDP-glucose/galactose transporter (UTR1) from Arabidopsis thaliana having a plasma-membrane targeting sequence replacing a tonoplast targeting sequence. The plasma membrane targeting sequence of this exemplary fusion protein may include the following sequence (see SEQ ID NO 21) TGCTCCATAATGAACTTAATGTGTGGGTCTACCTGCGCCGCT, or a sequence having 70-99% homology with the sequence.
It should be noted that a number of combinations and permutations of the genes/proteins described herein may be co-expressed and thereby accomplish one or more of the goals of the current invention. Such combinations are exemplary of preferred embodiments only, and not limiting in any way.
In one embodiment, a gene, such as a cannabinoid synthase, or a gene fragment corresponding with, for example a signal domain may be inhibited, downregulated, disrupted, or may even be knocked-out. One of ordinary skill in the art will recognize the many processes that can accomplish this without undue experimentation. In other embodiment, a knock-out may mean overexpression of a modified endo- or exogenous gene compared to the wild-type version.
For example, in one embodiment high levels of cannabinoid glycosylation may be generated by co-expressing CYP3A4 and CYP oxidoreductase (cytochrome P450 with P450 oxidoreductase) and at least one endogenous glycosyltransferases in N. benthamiana. In another embodiment, one or more of the endogenous or exogenous gene may be expressed in a plant or plant cell culture with the co-expression of myb and/or a catalase. In this configuration, there exists an additive effect of over-expressing a Myb transcription factor and a catalase, one or more of which may be targeted or localized, in the synthesis of water-soluble cannabinoids (glycosylated and hydroxylated) in Cannabis sativa.
In certain embodiments, endocannabinoids may be functionalized and/or acetylated and/or glycosylated as generally described herein.
All sequences described herein include sequences having between 70-99% homology with the sequence identified.
The inventive technology may further include novel cannabinoid compounds as well as their in vivo generation. As demonstrated in
The term “prodrug” is taken to mean compounds according to the invention which have been modified by means of, for example, sugars and which are cleaved in the organism to form the effective compounds according to the invention. The terms “effective amount” or “effective dose” or “dose” are interchangeably used herein and denote an amount of the pharmaceutical compound having a prophylactically or therapeutically relevant effect on a disease or pathological conditions, i.e. which causes in a tissue, system, animal or human a biological or medical response which is sought or desired, for example, by a researcher or physician. Pharmaceutical formulations can be administered in the form of dosage units which comprise a predetermined amount of active ingredient per dosage unit. The concentration of the prophylactically or therapeutically active ingredient in the formulation may vary from about 0.1 to 100 wt %. Preferably, the compound of formula (I) or the pharmaceutically acceptable salts thereof are administered in doses of approximately 0.5 to 1000 mg, more preferably between 1 and 700 mg, most preferably 5 and 100 mg per dose unit. Generally, such a dose range is appropriate for total daily incorporation. In other terms, the daily dose is preferably between approximately 0.02 and 100 mg/kg of body weight. The specific dose for each patient depends, however, on a wide variety of factors as already described in the present specification (e.g. depending on the condition treated, the method of administration and the age, weight and condition of the patient). Preferred dosage unit formulations are those which comprise a daily dose or part-dose, as indicated above, or a corresponding fraction thereof of an active ingredient. Furthermore, pharmaceutical formulations of this type can be prepared using a process which is generally known in the pharmaceutical art.
In the meaning of the present invention, the compound is further defined to include pharmaceutically usable derivatives, solvates, prodrugs, tautomers, enantiomers, racemates and stereoisomers thereof, including mixtures thereof in all ratios.
In one embodiment, the current invention may include systems, methods and compositions for the efficient production of cannabidiolic acid (CBDA) in yeast coupled with a system of hydrogen peroxide detoxification. In this embodiment, the inventive technology may include the generation of a genetically modified yeast cell.
In one embodiment, the inventive system may include: 1) transforming a yeast cell with a first nucleotide sequence comprising the nucleotide sequence expressing an acyl-activating enzyme and expressing a mutant prenyltransferase; and 2) transforming the yeast cell with a second nucleotide sequence comprising the nucleotide sequence expressing olivetolic synthase, expressing olivetolic acid cyclase and expressing aromatic prenyltransferase; 3) and transforming a yeast cell with a third nucleotide sequence expressing a catalase gene.
In another embodiment, the inventive system may include the step of: 1) transforming a yeast cell with a first nucleotide sequence expressing an acyl-activating enzyme and expressing a mutant prenyltransferase; 2) transforming a yeast cell with a second nucleotide sequence expressing olivetolic synthase and expressing olivetolic acid cyclase; and transforming a yeast cell with a third nucleotide sequence expressing aromatic prenyltransferase and expressing cannabidiolic acid synthase; and 3) transforming a yeast cell with a third nucleotide sequence expressing a catalase gene.
Additional embodiments of the invention may further include: 1) transforming a yeast strain with a first nucleotide sequence expressing an acyl-activating enzyme; 2) transforming the yeast strain with a second nucleotide sequence expressing a mutant prenyltransferase; 3) transforming the yeast strain with a third nucleotide sequence expressing olivetolic synthase; 4) transforming the yeast strain with a fourth nucleotide sequence expressing olivetolic acid cyclase; 5) transforming the yeast strain with a fifth nucleotide sequence expressing aromatic prenyltransferase; 6) transforming the yeast strain with a sixth nucleotide expressing cannabidiolic acid synthase; and 7) transforming the yeast strain with a sixth nucleotide expressing a catalase.
Additional embodiments of the invention may further include: 1) transforming a yeast cell with a first nucleotide sequence expressing an acyl-activating enzyme and expressing a mutant prenyltransferase; 2) transforming the yeast cell with a second nucleotide sequence expressing olivetolic synthase and expressing olivetolic acid cyclase; 3) and transforming the yeast cell with a third nucleotide sequence expressing aromatic prenyltransferase and expressing cannabidiolic acid synthase; and 7) transforming the yeast cell with a fourth nucleotide expressing a catalase. Additional embodiments of the invention may further include: 1) transforming a yeast cell with a first nucleotide sequence expressing an acyl-activating enzyme and expressing a mutant prenyltransferase; 2) transforming the yeast cell with a second nucleotide sequence expressing olivetolic synthase and expressing olivetolic acid cyclase; 3) transforming the yeast cell with a third nucleotide sequence expressing aromatic prenyltransferase and expressing cannabidiolic acid synthase, and 7) transforming the yeast cell with a fourth nucleotide expressing a catalase.
Sequence listings for the above identified sequences can be found in specification index NOs 1 and 2 filed in application Ser. No. 15/815,651, both of which are incorporated herein by reference. In particular, the following sequences are specifically incorporated by reference: iSEQ. ID. NO. 1; iSEQ. ID. NO. 2; iSEQ. ID. NO. 4; iSEQ. ID. NO. 5; iSEQ. ID. NO. 6; iSEQ. ID. NO. 7; iSEQ. ID. NO. 8; iSEQ. ID. NO. 9; iSEQ. ID. NO. 10; iSEQ. ID. NO. 11; iSEQ. ID. NO. 12; iSEQ. ID. NO. 13; iSEQ. ID. NO. 14; iSEQ. ID. NO. 15; iSEQ. ID. NO. 16; iSEQ. ID. NO. 23; iSEQ. ID. NO. 24; iSEQ. ID. NO. 22; iSEQ. ID. NO. 25; iSEQ. ID. NO. 26; iSEQ. ID. NO. 27; and iSEQ. ID. NO. 28. (The above sequences are marked with an “i” to denote their incorporation by reference.
In one embodiment, the invention may include systems, methods and compositions for the expression of exogenous, or heterologous genes in a yeast cell that may allow the biomodification and/or secretion of cannabinoids generated in a yeast cell. Specifically, the invention may allow the generation of cannabinoids and/or cannabinoid precursors in a genetically modified yeast cell, which may further be functionalized and/or modified into a water-soluble form. This embodiment may include transforming a yeast cell to express one or more of the following: heterologous cytochrome P450, and/or a heterologous P450 oxidoreductase, and/or a glycosyltransferase and/or heterologous ABC transporter. Similar to the above example, the genes may further be codon optimized for expression in a yeast cell that is configured to produce one or more cannabinoids or cannabinoid precursors, such as those genetically modified yeast cells described in U.S. Pat. No. 9,822,384, and U.S. patent application Ser. No. 15/815,651. In this embodiment, the exogenous catalase may be capable of generating water-soluble cannabinoid in one or more of the yeast cells identified in U.S. Pat. No. 9,822,384, and U.S. patent application Ser. No. 15/815,651, both of which are hereby incorporated in their entirety.
In one embodiment, the current invention may include systems, methods and compositions for the efficient production of cannabidiolic acid (CBDA) in yeast coupled with a system of biotransformation of the cannabinoids into a water-soluble form. In this embodiment, the inventive technology may include the generation of a genetically modified yeast cell.
In one embodiment, the inventive system may include: 1) transforming a yeast cell with a first nucleotide sequence comprising the nucleotide sequence expressing an acyl-activating enzyme and expressing a mutant prenyltransferase; and 2) transforming the yeast cell with a second nucleotide sequence comprising the nucleotide sequence expressing olivetolic synthase, expressing olivetolic acid cyclase and expressing aromatic prenyltransferase; 3) and transforming a yeast cell to express one or more of the following: heterologous cytochrome P450, and/or a heterologous P450 oxidoreductase, and/or a glycosyltransferase and/or heterologous ABC transporter, and/or a catalase. In this embodiment, the heterologous cytochrome P450, and/or a heterologous P450 oxidoreductase, and/or a glycosyltransferase and/or heterologous ABC transporter, and/or a catalase, the sequences identified herein may further be codon optimized for expression in yeast. Such codon optimization being generally within the knowledge and ability of one of ordinary skill in the art.
In another embodiment, the inventive system may include the step of: 1) transforming a yeast cell with a first nucleotide sequence expressing an acyl-activating enzyme and expressing a mutant prenyltransferase; 2) transforming a yeast cell with a second nucleotide sequence expressing olivetolic synthase and expressing olivetolic acid cyclase; and transforming a yeast cell with a third nucleotide sequence expressing aromatic prenyltransferase and expressing cannabidiolic acid synthase; 3) and transforming a yeast cell to express one or more of the following: heterologous cytochrome P450, and/or a heterologous P450 oxidoreductase, and/or a glycosyltransferase and/or heterologous ABC transporter, and/or a catalase.
Additional embodiments of the invention may further include: 1) transforming a yeast strain with a first nucleotide sequence expressing an acyl-activating enzyme; 2) transforming the yeast strain with a second nucleotide sequence expressing a mutant prenyltransferase; 3) transforming the yeast strain with a third nucleotide sequence expressing olivetolic synthase; 4) transforming the yeast strain with a fourth nucleotide sequence expressing olivetolic acid cyclase; 5) transforming the yeast strain with a fifth nucleotide sequence expressing aromatic prenyltransferase; 6) transforming the yeast strain with a sixth nucleotide expressing cannabidiolic acid synthase; and 7) and transforming a yeast cell to express one or more of the following: heterologous cytochrome P450, and/or a heterologous P450 oxidoreductase, and/or a glycosyltransferase and/or heterologous ABC transporter, and/or a catalase.
Additional embodiments of the invention may further include: 1) transforming a yeast cell with a first nucleotide sequence expressing an acyl-activating enzyme and expressing a mutant prenyltransferase; 2) transforming the yeast cell with a second nucleotide sequence expressing olivetolic synthase and expressing olivetolic acid cyclase; 3) and transforming the yeast cell with a third nucleotide sequence expressing aromatic prenyltransferase and expressing cannabidiolic acid synthase; and 7) and transforming a yeast cell to express one or more of the following: heterologous cytochrome P450, and/or a heterologous P450 oxidoreductase, and/or a glycosyltransferase and/or heterologous ABC transporter, and/or a catalase.
Additional embodiments of the invention may further include: 1) transforming a yeast cell with a first nucleotide sequence expressing an acyl-activating enzyme and expressing a mutant prenyltransferase; 2) transforming the yeast cell with a second nucleotide sequence expressing olivetolic synthase and expressing olivetolic acid cyclase; 3) transforming the yeast cell with a third nucleotide sequence expressing aromatic prenyltransferase and expressing cannabidiolic acid synthase, and 7) and transforming a yeast cell to express one or more of the following: heterologous cytochrome P450, and/or a heterologous P450 oxidoreductase, and/or a glycosyltransferase and/or heterologous ABC transporter, and/or a catalase.
Sequence listings for the above identified sequences can be found in specification index NOs 1 and 2 filed in application Ser. No. 15/815,651, both of which are incorporated herein by reference. In particular, the following sequences are specifically incorporated by reference: iSEQ. ID. NO. 1; iSEQ. ID. NO. 2; iSEQ. ID. NO. 4; iSEQ. ID. NO. 5; iSEQ. ID. NO. 6; iSEQ. ID. NO. 7; iSEQ. ID. NO. 8; iSEQ. ID. NO. 9; iSEQ. ID. NO. 10; iSEQ. ID. NO. 11; iSEQ. ID. NO. 12; iSEQ. ID. NO. 13; iSEQ. ID. NO. 14; iSEQ. ID. NO. 15; iSEQ. ID. NO. 16; iSEQ. ID. NO. 23; iSEQ. ID. NO. 24; iSEQ. ID. NO. 22; iSEQ. ID. NO. 25; iSEQ. ID. NO. 26; iSEQ. ID. NO. 27; and iSEQ. ID. NO. 28. (The above sequences are marked with an “i” to denote their incorporation by reference.
The invention may further include systems, method and compositions for the generation of water-soluble cannabinoids in a cell culture system expressing an endogenous glycosyltransferase. In this embodiment, one or more cannabinoids, such as in the form of a cannabinoid extract, may be introduced to a tobacco cell culture expressing one or more endogenous glycosyltransferase that may generate water-soluble cannabinoids. In some embodiment, a tobacco cell culture may be further genetically modified to express an endogenous glycosyltransferase which may be operably linked to a promoter. In this embodiment, such a promotor may be an inducible, constitutive or other promotor. In this preferred embodiment, such an endogenous glycosyltransferase may cause the overexpression of the protein generating a more robust cannabinoid biotransformation system.
As noted above, present invention allows the scaled production of water-soluble cannabinoids. Because of this enhanced solubility, the invention allows for the addition of such water-soluble cannabinoid to a variety of compositions without requiring oils and or emulsions that are generally required to maintain the non-modified cannabinoids in suspension. As a result, the present invention may all for the production of a variety of compositions for both the food and beverage industry, as well as pharmaceutical applications that do not required oils and emulsion suspensions and the like.
In one embodiment the invention may include aqueous compositions containing one or more water-soluble cannabinoids that may be introduced to a food or beverage. In a preferred embodiment, the invention may include an aqueous solution containing one or more dissolved water-soluble cannabinoids. In this embodiment, such water-soluble cannabinoid may include a glycosylated cannabinoid, and/or an acetylated cannabinoid, and/or a mixture of both. Here, the glycosylated cannabinoid, and/or said acetylated cannabinoid were generated in vivo as generally described herein, or in vitro. In additional embodiment, the water-soluble cannabinoid may be an isolated non-psychoactive, such as CBD and the like. Moreover, in this embodiment, the aqueous may contain one or more of the following: saline, purified water, propylene glycol, deionized water, and/or an alcohol such as ethanol as well as a pH buffer that may allow the aqueous solution to be maintained at a pH below 7.4. Additional embodiments may include the addition an acid of base, such as formic acid, or ammonium hydroxide.
In another embodiment, the invention may include a consumable food additive having at least one water-soluble cannabinoid, such as a glycosylated and/or an acetylated cannabinoid, and/or a mixture of both, where such water-soluble cannabinoids may be generated in vivo and/or in vitro. This consumable food additive may further include one or more a food additive polysaccharides, such as dextrin and/or maltodextrin, as well as an emulsifier. Example emulsifiers may include, but not be limited to: gum arabic, modified starch, pectin, xanthan gum, gum ghatti, gum tragacanth, fenugreek gum, mesquite gum, mono-glycerides and di-glycerides of long chain fatty acids, sucrose monoesters, sorbitan esters, polyethoxylated glycerols, stearic acid, palmitic acid, mono-glycerides, di-glycerides, propylene glycol esters, lecithin, lactylated mono- and di-glycerides, propylene glycol monoesters, polyglycerol esters, diacetylated tartaric acid esters of mono- and di-glycerides, citric acid esters of monoglycerides, stearoyl-2-lactylates, polysorbates, succinylated monoglycerides, acetylated monoglycerides, ethoxylated monoglycerides, quillaia, whey protein isolate, casein, soy protein, vegetable protein, pullulan, sodium alginate, guar gum, locust bean gum, tragacanth gum, tamarind gum, carrageenan, furcellaran, Gellan gum, psyllium, curdlan, konjac mannan, agar, and cellulose derivatives, or combinations thereof.
The consumable food additive of the invention may be a homogenous composition and may further comprising a flavoring agent. Exemplary flavoring agents may include: sucrose (sugar), glucose, fructose, sorbitol, mannitol, corn syrup, high fructose corn syrup, saccharin, aspartame, sucralose, acesulfame potassium (acesulfame-K), neotame. The consumable food additive of the invention may also contain one or more coloring agents. Exemplary coloring agents may include: FD&C Blue Nos. 1 and 2, FD&C Green No. 3, FD&C Red Nos. 3 and 40, FD&C Yellow Nos. 5 and 6, Orange B, Citrus Red No. 2, annatto extract, beta-carotene, grape skin extract, cochineal extract or carmine, paprika oleoresin, caramel color, fruit and vegetable juices, saffron, Monosodium glutamate (MSG), hydrolyzed soy protein, autolyzed yeast extract, disodium guanylate or inosinate.
The consumable food additive of the invention may also contain one or more surfactants, such as glycerol monostearate and polysorbate 80. The consumable food additive of the invention may also contain one or more preservatives. Exemplary preservatives may include ascorbic acid, citric acid, sodium benzoate, calcium propionate, sodium erythorbate, sodium nitrite, calcium sorbate, potassium sorbate, BHA, BHT, EDTA, tocopherols. The consumable food additive of the invention may also contain one or more nutrient supplements, such as: thiamine hydrochloride, riboflavin, niacin, niacinamide, folate or folic acid, beta carotene, potassium iodide, iron or ferrous sulfate, alpha tocopherols, ascorbic acid, Vitamin D, amino acids, multi-vitamin, fish oil, co-enzyme Q-10, and calcium.
In one embodiment, the invention may include a consumable fluid containing at least one dissolved water-soluble cannabinoid. In one preferred embodiment, this consumable fluid may be added to a drink or beverage to infused it with the dissolved water-soluble cannabinoid generated in an in vivo system as generally herein described, or through an in vitro process, for example as identified by Zipp et al. which is incorporated herein by reference. As noted above, such water-soluble cannabinoid may include a water-soluble glycosylated cannabinoid and/or a water-soluble acetylated cannabinoid, and/or a mixture of both. The consumable fluid may include a food additive polysaccharide such as maltodextrin and/or dextrin, which may further be in an aqueous form and/or solution. For example, in one embodiment, and aqueous maltodextrin solution may include a quantity of sorbic acid and an acidifying agent to provide a food grade aqueous solution of maltodextrin having a pH of 2-4 and a sorbic acid content of 0.02-0.1% by weight.
In certain embodiments, the consumable fluid may include water, as well as an alcoholic beverage; a non-alcoholic beverage, a noncarbonated beverage, a carbonated beverage, a cola, a root beer, a fruit-flavored beverage, a citrus-flavored beverage, a fruit juice, a fruit-containing beverage, a vegetable juice, a vegetable containing beverage, a tea, a coffee, a dairy beverage, a protein containing beverage, a shake, a sports drink, an energy drink, and a flavored water. The consumable fluid may further include at least one additional ingredients, including but not limited to: xanthan gum, cellulose gum, whey protein hydrolysate, ascorbic acid, citric acid, malic acid, sodium benzoate, sodium citrate, sugar, phosphoric acid, and water.
In one embodiment, the invention may include a consumable gel having at least one water-soluble cannabinoid and gelatin in an aqueous solution. In a preferred embodiment, the consumable gel may include a water-soluble glycosylated cannabinoid and/or a water-soluble acetylated cannabinoid, or a mixture of both, generated in an in vivo system, such as a whole plant or cell suspension culture system as generally herein described.
Additional embodiments may include a liquid composition having at least one water-soluble cannabinoid solubilized in a first quantity of water; and at least one of: xanthan gum, cellulose gum, whey protein hydrolysate, ascorbic acid, citric acid, malic acid, sodium benzoate, sodium citrate, sugar, phosphoric acid, and/or a sugar alcohol. In this embodiment, a water-soluble cannabinoid may include a glycosylated water-soluble cannabinoid, an acetylated water-soluble cannabinoid, or a mixture of both. In one preferred embodiment, the composition may further include a quantity of ethanol. Here, the amount of water-soluble cannabinoid may include: less than 10 mass % water; more than 95 mass % water; about 0.1 mg to about 1000 mg of the water-soluble cannabinoid; about 0.1 mg to about 500 mg of the water-soluble cannabinoid; about 0.1 mg to about 200 mg of the water-soluble cannabinoid; about 0.1 mg to about 100 mg of the water-soluble cannabinoid; about 0.1 mg to about 100 mg of the water-soluble cannabinoid; about 0.1 mg to about 10 mg of the water-soluble cannabinoid; about 0.5 mg to about 5 mg of the water-soluble cannabinoid; about 1 mg/kg to 5 mg/kg (body weight) in a human of the water-soluble cannabinoid.
In alternative embodiment, the composition may include at least one water-soluble cannabinoid in the range of 50 mg/L to 300 mg/L; at least one water-soluble cannabinoid in the range of 50 mg/L to 100 mg/L; at least one water-soluble cannabinoid in the range of 50 mg/L to 500 mg/L; at least one water-soluble cannabinoid over 500 mg/L; at least one water-soluble cannabinoid under 50 mg/L. Additional embodiments may include one or more of the following additional components: a flavoring agent; a coloring agent; a coloring agent; and/or caffeine.
In one embodiment, the invention may include a liquid composition having at least one water-soluble cannabinoid solubilized in said first quantity of water and a first quantity of ethanol in a liquid state. In a preferred embodiment, a first quantity of ethanol in a liquid state may be between 1% to 20% weight by volume of the liquid composition. In this embodiment, a water-soluble cannabinoid may include a glycosylated water-soluble cannabinoid, an acetylated water-soluble cannabinoid, or a mixture of both. Such water-soluble cannabinoids may be generated in an in vivo and/or in vitro system as herein identified. In a preferred embodiment, the ethanol, or ethyl alcohol component may be up to about ninety-nine point nine-five percent (99.95%) by weight and the water-soluble cannabinoid about zero point zero five percent (0.05%) by weight. In another embodiment,
Examples of the preferred embodiment may include liquid ethyl alcohol compositions having one or more water-soluble cannabinoids wherein said ethyl alcohol has a proof greater than 100, and/or less than 100. Additional examples of a liquid composition containing ethyl alcohol and at least one water-soluble cannabinoid may include, beer, wine and/or distilled spirit.
Additional embodiments of the invention may include a chewing gum composition having a first quantity of at least one water-soluble cannabinoid. In a preferred embodiment, a chewing gum composition may further include a gum base comprising a buffering agent selected from the group consisting of acetates, glycinates, phosphates, carbonates, glycerophosphates, citrates, borates, and mixtures thereof. Additional components may include at least one sweetening agent; and at least one flavoring agent. As noted above, in a preferred embodiment, a water-soluble cannabinoid may include at least one water-soluble acetylated cannabinoid, and/or at least one water-soluble glycosylated cannabinoid, or a mixture of the two. In this embodiment, such water soluble glycosylated cannabinoid, and/or said acetylated cannabinoid may have been glycosylated and/or acetylated in vivo respectively.
In one embodiment, the chewing gum composition described above may include:
Here, such flavoring agents may include: menthol flavor, eucalyptus, mint flavor and/or L-menthol. Sweetening agents may include one or more of the following: xylitol, sorbitol, isomalt, aspartame, sucralose, acesulfame potassium, and saccharin. Additional preferred embodiment may include a chewing gum having a pharmaceutically acceptable excipient selected from the group consisting of: fillers, disintegrants, binders, lubricants, and antioxidants.
The chewing gum composition may further be non-disintegrating and also include one or more coloring and/or flavoring agents.
The invention may further include a composition for a water-soluble cannabinoid infused solution comprising essentially of: water and/or purified water, at least one water-soluble cannabinoid, and at least one flavoring agent. A water-soluble cannabinoid infused solution of the invention may further include a sweetener selected from the group consisting of: glucose, sucrose, invert sugar, corn syrup, stevia extract powder, stevioside, steviol, aspartame, saccharin, saccharin salts, sucralose, potassium acetosulfam, sorbitol, xylitol, mannitol, erythritol, lactitol, alitame, miraculin, monellin, and thaumatin or a combination of the same. Additional components of the water-soluble cannabinoid infused solution may include, but not be limited to: sodium chloride, sodium chloride solution, glycerin, a coloring agent, and a demulcent. As to this last potential component, in certain embodiment, a demulcent may include: pectin, glycerin, honey, methylcellulose, and/or propylene glycol. As noted above, in a preferred embodiment, a water-soluble cannabinoid may include at least one water-soluble acetylated cannabinoid, and/or at least one water-soluble glycosylated cannabinoid, or a mixture of the two. In this embodiment, such water soluble glycosylated cannabinoid, and/or said acetylated cannabinoid may have been glycosylated and/or acetylated in vivo respectively.
The invention may further include a composition for a water-soluble cannabinoid infused anesthetic solution having water, or purified water, at least one water-soluble cannabinoid, and at least one oral anesthetic. In a preferred embodiment, an anesthetic may include benzocaine, and/or phenol in a quantity of between 0.1% to 15% volume by weight.
Additional embodiments may include a water-soluble cannabinoid infused anesthetic solution having a sweetener which may be selected from the group consisting of: glucose, sucrose, invert sugar, corn syrup, stevia extract powder, stevioside, steviol, aspartame, saccharin, saccharin salts, sucralose, potassium acetosulfam, sorbitol, xylitol, mannitol, erythritol, lactitol, alitame, miraculin, monellin, and thaumatin or a combination of the same. Additional components of the water-soluble cannabinoid infused solution may include, but not be limited to: sodium chloride, sodium chloride solution, glycerin, a coloring agent a demulcent. In a preferred embodiment, a demulcent may selected from the group consisting of: pectin, glycerin, honey, methylcellulose, and propylene glycol. As noted above, in a preferred embodiment, a water-soluble cannabinoid may include at least one water-soluble acetylated cannabinoid, and/or at least one water-soluble glycosylated cannabinoid, or a mixture of the two. In this embodiment, such water soluble glycosylated cannabinoid, and/or said acetylated cannabinoid may have been glycosylated and/or acetylated in vivo respectively.
The invention may further include a composition for a hard lozenge for rapid delivery of water-soluble cannabinoids through the oral mucosa. In this embodiment, such a hard lozenge composition may include: a crystalized sugar base, and at least one water-soluble cannabinoid, wherein the hard lozenge has a moisture content between 0.1 to 2%. In this embodiment, the water-soluble cannabinoid may be added to the sugar based when it is in a liquefied form and prior to the evaporation of the majority of water content. Such a hard lozenge may further be referred to as a candy.
In a preferred embodiment, a crystalized sugar base may be formed from one or more of the following: sucrose, invert sugar, corn syrup, and isomalt or a combination of the same. Additional components may include at least one acidulant. Examples of acidulants may include, but not be limited to: citric acid, tartaric acid, fumaric acid, and malic acid. Additional components may include at least one pH adjustor. Examples of pH adjustors may include, but not be limited to: calcium carbonate, sodium bicarbonate, and magnesium trisilicate.
In another preferred embodiment, the composition may include at least one anesthetic. Example of such anesthetics may include benzocaine, and phenol. In this embodiment, first quantity of anesthetic may be between 1 mg to 15 mg per lozenge. Additional embodiments may include a quantity of menthol. In this embodiment, such a quantity of menthol may be between 1 mg to 20 mg. The hard lozenge composition may also include a demulcent, for example: pectin, glycerin, honey, methylcellulose, propylene glycol, and glycerin. In this embodiment, a demulcent may be in a quantity between 1 mg to 10 mg. As noted above, in a preferred embodiment, a water-soluble cannabinoid may include at least one water-soluble acetylated cannabinoid, and/or at least one water-soluble glycosylated cannabinoid, or a mixture of the two. In this embodiment, such water soluble glycosylated cannabinoid, and/or said acetylated cannabinoid may have been glycosylated and/or acetylated in vivo respectively.
The invention may include a chewable lozenge for rapid delivery of water-soluble cannabinoids through the oral mucosa. In a preferred embodiment, the compositions may include: a glycerinated gelatin base, at least one sweetener; and at least one water-soluble cannabinoid dissolved in a first quantity of water. In this embodiment, a sweetener may include sweetener selected from the group consisting of: glucose, sucrose, invert sugar, corn syrup, stevia extract powder, stevioside, steviol, aspartame, saccharin, saccharin salts, sucralose, potassium acetosulfam, sorbitol, xylitol, mannitol, erythritol, lactitol, alitame, miraculin, monellin, and thaumatin or a combination of the same.
Additional components may include at least one acidulant. Examples of acidulants may include, but not be limited to: citric acid, tartaric acid, fumaric acid, and malic acid. Additional components may include at least one pH adjustor. Examples of pH adjustors may include, but not be limited to: calcium carbonate, sodium bicarbonate, and magnesium trisilicate.
In another preferred embodiment, the composition may include at least one anesthetic. Example of such anesthetics may include benzocaine, and phenol. In this embodiment, first quantity of anesthetic may be between 1 mg to 15 mg per lozenge. Additional embodiments may include a quantity of menthol. In this embodiment, such a quantity of menthol may be between 1 mg to 20 mg. The chewable lozenge composition may also include a demulcent, for example: pectin, glycerin, honey, methylcellulose, propylene glycol, and glycerin. In this embodiment, a demulcent may be in a quantity between 1 mg to 10 mg. As noted above, in a preferred embodiment, a water-soluble cannabinoid may include at least one water-soluble acetylated cannabinoid, and/or at least one water-soluble glycosylated cannabinoid, or a mixture of the two. In this embodiment, such water soluble glycosylated cannabinoid, and/or said acetylated cannabinoid may have been glycosylated and/or acetylated in vivo respectively.
The invention may include a soft lozenge for rapid delivery of water-soluble cannabinoids through the oral mucosa. In a preferred embodiment, the compositions may include: polyethylene glycol base, at least one sweetener; and at least one water-soluble cannabinoid dissolved in a first quantity of water. In this embodiment, a sweetener may include sweetener selected from the group consisting of: glucose, sucrose, invert sugar, corn syrup, stevia extract powder, stevioside, steviol, aspartame, saccharin, saccharin salts, sucralose, potassium acetosulfam, sorbitol, xylitol, mannitol, erythritol, lactitol, alitame, miraculin, monellin, and thaumatin or a combination of the same. Additional components may include at least one acidulant. Examples of acidulants may include, but not be limited to: citric acid, tartaric acid, fumaric acid, and malic acid. Additional components may include at least one pH adjustor. Examples of pH adjustors may include, but not be limited to: calcium carbonate, sodium bicarbonate, and magnesium trisilicate.
In another preferred embodiment, the composition may include at least one anesthetic. Example of such anesthetics may include benzocaine, and phenol. In this embodiment, first quantity of anesthetic may be between 1 mg to 15 mg per lozenge. Additional embodiments may include a quantity of menthol. In this embodiment, such a quantity of menthol may be between 1 mg to 20 mg. The soft lozenge composition may also include a demulcent, for example: pectin, glycerin, honey, methylcellulose, propylene glycol, and glycerin. In this embodiment, a demulcent may be in a quantity between 1 mg to 10 mg. As noted above, in a preferred embodiment, a water-soluble cannabinoid may include at least one water-soluble acetylated cannabinoid, and/or at least one water-soluble glycosylated cannabinoid, or a mixture of the two. In this embodiment, such water soluble glycosylated cannabinoid, and/or said acetylated cannabinoid may have been glycosylated and/or acetylated in vivo respectively.
In another embodiment, the invention may include a tablet or capsule consisting essentially of a water-soluble glycosylated cannabinoid and a pharmaceutically acceptable excipient. Example may include solid, semi-solid and aqueous excipients such as: maltodextrin, whey protein isolate, xanthan gum, guar gum, diglycerides, monoglycerides, carboxymethyl cellulose, glycerin, gelatin, polyethylene glycol and water-based excipients.
In a preferred embodiment, a water-soluble cannabinoid may include at least one water-soluble acetylated cannabinoid, and/or at least one water-soluble glycosylated cannabinoid, or a mixture of the two. In this embodiment, such water soluble glycosylated cannabinoid, and/or said acetylated cannabinoid may have been glycosylated and/or acetylated in vivo respectively. Examples of such in vivo systems being generally described herein, including in plant, as well as cell culture systems including cannabis cell culture, tobacco cell culture and yeast cell culture systems. In one embodiment, a tablet or capsule may include an amount of water-soluble cannabinoid of 5 milligrams or less. Alternative embodiments may include an amount of water-soluble cannabinoid between 5 milligrams and 200 milligrams. Still other embodiments may include a tablet or capsule having amount of water-soluble cannabinoid that is more than 200 milligrams.
The invention may further include a method of manufacturing and packaging a cannabinoid dosage, consisting of the following steps: 1) preparing a fill solution with a desired concentration of a water-soluble cannabinoid in a liquid carrier wherein said cannabinoid solubilized in said liquid carrier; 2) encapsulating said fill solution in capsules; 3) packaging said capsules in a closed packaging system; and 4) removing atmospheric air from the capsules. In one embodiment, the step of removing of atmospheric air consists of purging the packaging system with an inert gas, such as, for example, nitrogen gas, such that said packaging system provides a room temperature stable product. In one preferred embodiment, the packaging system may include a plaster package, which may be constructed of material that minimizes exposure to moisture and air.
In one embodiment a preferred liquid carrier may include a water-based carrier, such as for example an aqueous sodium chloride solution. In a preferred embodiment, a water-soluble cannabinoid may include at least one water-soluble acetylated cannabinoid, and/or at least one water-soluble glycosylated cannabinoid, or a mixture of the two. In this embodiment, such water soluble glycosylated cannabinoid, and/or said acetylated cannabinoid may have been glycosylated and/or acetylated in vivo respectively. Examples of such in vivo systems being generally described herein, including in plant, as well as cell culture systems including cannabis cell culture, tobacco cell culture and yeast cell culture systems. In one embodiment, a desired cannabinoid concentration may be about 1-10% w/w, while in other embodiments it may be about 1.5-6.5% w/w. Alternative embodiments may include an amount of water-soluble cannabinoid between 5 milligrams and 200 milligrams. Still other embodiments may include a tablet or capsule having amount of water-soluble cannabinoid that is more than 200 milligrams.
The invention may include an oral pharmaceutical solution, such as a sub-lingual spray, consisting essentially of a water-soluble cannabinoid, 30-33% w/w water, about 50% w/w alcohol, 0.01% w/w butylated hydroxylanisole (BHA) or 0.1% w/w ethylenediaminetetraacetic acid (EDTA) and 5-21% w/w co-solvent, having a combined total of 100%, wherein said co-solvent is selected from the group consisting of propylene glycol, polyethylene glycol and combinations thereof, and wherein said water-soluble cannabinoid is a glycosylated cannabinoid, an acetylated cannabinoid or a mixture of the two. In an alternative embodiment, such a oral pharmaceutical solution may consist essentially of 0.1 to 5% w/w of said water-soluble cannabinoid, about 50% w/w alcohol, 5.5% w/w propylene glycol, 12% w/w polyethylene glycol and 30-33% w/w water. In a preferred composition, the alcohol component may be ethanol.
The invention may include an oral pharmaceutical solution, such as a sublingual spray, consisting essentially of about 0.1% to 1% w/w water-soluble cannabinoid, about 50% w/w alcohol, 5.5% w/w propylene glycol, 12% w/w polyethylene glycol, 30-33% w/w water, 0.01% w/w butylated hydroxyanisole, having a combined total of 100%, and wherein said water-soluble cannabinoid is a glycosylated cannabinoid, an acetylated cannabinoid or a mixture of the two wherein that were generated in vivo. In an alternative embodiment, such a oral pharmaceutical solution may consist essentially of 0.54% w/w water-soluble cannabinoid, 31.9% w/w water, 12% w/w polyethylene glycol 400, 5.5% w/w propylene glycol, 0.01% w/w butylated hydroxyanisole, 0.05% w/w sucralose, and 50% w/w alcohol, wherein the a the alcohol components may be ethanol.
The invention may include a solution for nasal and/or sublingual administration of a cannabinoid including: 1) an excipient of propylene glycol, ethanol anhydrous, or a mixture of both; and 2) a water-soluble cannabinoid which may include glycosylated cannabinoid an acetylated cannabinoid or a mixture of the two generated in vivo and/or in vitro. In a preferred embodiment, the composition may further include a topical decongestant, which may include phenylephrine hydrochloride, Oxymetazoline hydrochloride, and Xylometazoline in certain preferred embodiments. The composition may further include an antihistamine, and/or a steroid. Preferably, the steroid component is a corticosteroid selected from the group consisting of: neclomethasone dipropionate, budesonide, ciclesonide, flunisolide, fluticasone furoate, fluticasone propionate, mometasone, triamcinolone acetonide. In alternative embodiment, the solution for nasal and/or sublingual administration of a cannabinoid may further comprise at least one of the following: benzalkonium chloride solution, benzyl alcohol, boric acid, purified water, sodium borate, polysorbate 80, phenylethyl alcohol, microcrystalline cellulose, carboxymethylcellulose sodium, dextrose, dipasic, sodium phosphate, edetate disodium, monobasic sodium phosphate, propylene glycol.
The invention may further include an aqueous solution for nasal and/or sublingual administration of a cannabinoid comprising: a water and/or saline solution; and a water-soluble cannabinoid which may include a glycosylated cannabinoid, an acetylated cannabinoid or a mixture of the two generated in vivo and/or in vitro. In a preferred embodiment, the composition may further include a topical decongestant, which may include phenylephrine hydrochloride, Oxymetazoline hydrochloride, and Xylometazoline in certain preferred embodiments. The composition may further include an antihistamine, and/or a steroid. Preferably, the steroid component is a corticosteroid selected from the group consisting of: neclomethasone dipropionate, budesonide, ciclesonide, flunisolide, fluticasone furoate, fluticasone propionate, mometasone, triamcinolone acetonide. In alternative embodiment, the aqueous solution may further comprise at least one of the following: benzalkonium chloride solution, benzyl alcohol, boric acid, purified water, sodium borate, polysorbate 80, phenylethyl alcohol, microcrystalline cellulose, carboxymethylcellulose sodium, dextrose, dipasic, sodium phosphate, edetate disodium, monobasic sodium phosphate, propylene glycol.
The invention may include a topical formulation for the transdermal delivery of water-soluble cannabinoid. In a preferred embodiment, a topical formulation for the transdermal delivery of water-soluble cannabinoid may include a water-soluble glycosylated cannabinoid, and/or water-soluble acetylated cannabinoid, or a mixture of both, and a pharmaceutically acceptable excipient. Here, a glycosylated cannabinoid and/or acetylated cannabinoid may be generated in vivo and/or in vitro. Preferably a pharmaceutically acceptable excipient may include one or more: gels, ointments, cataplasms, poultices, pastes, creams, lotions, plasters and jellies or even polyethylene glycol. Additional embodiments may further include one or more of the following components: a quantity of capsaicin; a quantity of benzocaine; a quantity of lidocaine; a quantity of camphor; a quantity of benzoin resin; a quantity of methylsalicylate; a quantity of triethanolamine salicylate; a quantity of hydrocortisone; a quantity of salicylic acid.
The invention may include a gel for transdermal administration of a water soluble-cannabinoid which may be generated in vitro and/or in vivo. In this embodiment, the mixture preferably contains from 15% to about 90% ethanol, about 10% to about 60% buffered aqueous solution or water, about 0.1 to about 25% propylene glycol, from about 0.1 to about 20% of a gelling agent, from about 0.1 to about 20% of a base, from about 0.1 to about 20% of an absorption enhancer and from about 1% to about 25% polyethylene glycol and a water-soluble cannabinoid such as a glycosylated cannabinoid, and/or acetylated cannabinoid, and/or a mixture of the two.
In another embodiment, the invention may further include a transdermal composition having a pharmaceutically effective amount of a water-soluble cannabinoid for delivery of the cannabinoid to the bloodstream of a user. This transdermal composition may include a pharmaceutically acceptable excipient and at least one water-soluble cannabinoid, such as a glycosylated cannabinoid, an acetylated cannabinoid, and a mixture of both, wherein the cannabinoid is capable of diffusing from the composition into the bloodstream of the user. In a preferred embodiment, a pharmaceutically acceptable excipient to create a transdermal dosage form selected from the group consisting of: gels, ointments, cataplasms, poultices, pastes, creams, lotions, plasters and jellies. The transdermal composition may further include one or more surfactants. In one preferred embodiment, the surfactant may include a surfactant-lecithin organogel, which may further be present in an amount of between about between about 95% and about 98% w/w. In an alternative embodiment, a surfactant-lecithin organogel comprises lecithin and PPG-2 myristyl ether propionate and/or high molecular weight polyacrylic acid polymers. The transdermal composition may further include a quantity of isopropyl myristate.
The invention may further include transdermal composition having one or more permeation enhancers to facilitate transfer of the water-soluble cannabinoid across a dermal layer. In a preferred embodiment, a permeation enhancer may include one or more of the following: propylene glycol monolaurate, diethylene glycol monoethyl ether, an oleoyl macrogolglyceride, a caprylocaproyl macrogolglyceride, and an oleyl alcohol,
The invention may also include a liquid cannabinoid liniment composition consisting of water, isopropyl alcohol solution and a water-soluble cannabinoid, such as glycosylated cannabinoid, and/or said acetylated cannabinoid which may further have been generated in vivo. This liquid cannabinoid liniment composition may further include approximately 97.5% to about 99.5% by weight of 70% isopropyl alcohol solution and from about 0.5% to about 2.5% by weight of a water-soluble cannabinoid mixture.
Based on the improved solubility and other physical properties, as well as cost advantage and scalability of the invention's in vivo water-soluble production platform, the invention may include one or more commercial infusions. For example, commercially available products, such a lip balm, soap, shampoos, lotions, creams and cosmetics may be infused with one or more water-soluble cannabinoids.
As generally described herein, the invention may include one or more plants, such as a tobacco plant and/or cell culture that may be genetically modified to produce, for example water-soluble glycosylated cannabinoids in vivo. As such, in one preferred embodiment, the invention may include a tobacco plant and or cell that contain at least one water-soluble cannabinoid. In a preferred embodiment, a tobacco plant containing a quantity of water-soluble cannabinoids may be used to generate a water-soluble cannabinoid infused tobacco product such as a cigarette, pipe tobacco, chewing tobacco, cigar, and smokeless tobacco. In one embodiment, the tobacco plant may be treated with one or more glycosidase inhibitors. In a preferred embodiment, since the cannabinoid being introduced to the tobacco plant may be controlled, the inventive tobacco plant may generate one or more selected water-cannabinoids. For example, in one embodiment, the genetically modified tobacco plant may be introduced to a single cannabinoid, such as a non-psychoactive CBD compound, while in other embodiment, the genetically modified tobacco plant may be introduced to a cannabinoid extract containing a full and/or partial entourage of cannabinoid compounds.
The invention may further include a novel composition that may be used to supplement a cigarette, or other tobacco-based product. In this embodiment, the composition may include at least one water-soluble cannabinoid dissolved in an aqueous solution. This aqueous solution may be wherein said composition may be introduced to a tobacco product, such as a cigarette and/or a tobacco leaf such that the aqueous solution may evaporate generating a cigarette and/or a tobacco leaf that contains the aforementioned water-soluble cannabinoid(s), which may further have been generated in vivo as generally described herein.
On one embodiment the invention may include one or more method of treating a medical condition in a mammal. In this embodiment, the novel method may include of administering a therapeutically effective amount of a water-soluble cannabinoid, such as an in vivo generated glycosylated cannabinoid, and/or an acetylated cannabinoid, and/or a mixture of both or a pharmaceutically acceptable salt thereof, wherein the medical condition is selected from the group consisting of: obesity, post-traumatic stress syndrome, anorexia, nausea, emesis, pain, wasting syndrome, HIV-wasting, chemotherapy induced nausea and vomiting, alcohol use disorders, anti-tumor, amyotrophic lateral sclerosis, glioblastoma multiforme, glioma, increased intraocular pressure, glaucoma, cannabis use disorders, Tourette's syndrome, dystonia, multiple sclerosis, inflammatory bowel disorders, arthritis, dermatitis, Rheumatoid arthritis, systemic lupus erythematosus, anti-inflammatory, anti-convulsant, anti-psychotic, anti-oxidant, neuroprotective, anti-cancer, immunomodulatory effects, peripheral neuropathic pain, neuropathic pain associated with post-herpetic neuralgia, diabetic neuropathy, shingles, burns, actinic keratosis, oral cavity sores and ulcers, post-episiotomy pain, psoriasis, pruritis, contact dermatitis, eczema, bullous dermatitis herpetiformis, exfoliative dermatitis, mycosis fungoides, pemphigus, severe erythema multiforme (e.g., Stevens-Johnson syndrome), seborrheic dermatitis, ankylosing spondylitis, psoriatic arthritis, Reiter's syndrome, gout, chondrocalcinosis, joint pain secondary to dysmenorrhea, fibromyalgia, musculoskeletal pain, neuropathic-postoperative complications, polymyositis, acute nonspecific tenosynovitis, bursitis, epicondylitis, post-traumatic osteoarthritis, synovitis, and juvenile rheumatoid arthritis. In a preferred embodiment, the pharmaceutical composition may be administered by a route selected from the group consisting of: transdermal, topical, oral, buccal, sublingual, intra-venous, intra-muscular, vaginal, rectal, ocular, nasal and follicular. The amount of water-soluble cannabinoids may be a therapeutically effective amount, which may be determined by the patient's age, weight, medical condition cannabinoid-delivered, route of delivery and the like. In one embodiment, a therapeutically effective amount may be 50 mg or less of a water-soluble cannabinoid. In another embodiment, a therapeutically effective amount may be 50 mg or more of a water-soluble cannabinoid.
It should be noted that for any of the above composition, unless otherwise stated, an effective amount of water-soluble cannabinoids may include amounts between: 0.01 mg to 0.1 mg; 0.01 mg to 0.5 mg; 0.01 mg to 1 mg; 0.01 mg to 5 mg; 0.01 mg to 10 mg; 0.01 mg to 25 mg; 0.01 mg to 50 mg; 0.01 mg to 75 mg; 0.01 mg to 100 mg; 0.01 mg to 125 mg; 0.01 mg to 150 mg; 0.01 mg to 175 mg; 0.01 mg to 200 mg; 0.01 mg to 225 mg; 0.01 mg to 250 mg; 0.01 mg to 275 mg; 0.01 mg to 300 mg; 0.01 mg to 225 mg; 0.01 mg to 350 mg; 0.01 mg to 375 mg; 0.01 mg to 400 mg; 0.01 mg to 425 mg; 0.01 mg to 450 mg; 0.01 mg to 475 mg; 0.01 mg to 500 mg; 0.01 mg to 525 mg; 0.01 mg to 550 mg; 0.01 mg to 575 mg; 0.01 mg to 600 mg; 0.01 mg to 625 mg; 0.01 mg to 650 mg; 0.01 mg to 675 mg; 0.01 mg to 700 mg; 0.01 mg to 725 mg; 0.01 mg to 750 mg; 0.01 mg to 775 mg; 0.01 mg to 800 mg; 0.01 mg to 825 mg; 0.01 mg to 950 mg; 0.01 mg to 875 mg; 0.01 mg to 900 mg; 0.01 mg to 925 mg; 0.01 mg to 950 mg; 0.01 mg to 975 mg; 0.01 mg to 1000 mg; 0.01 mg to 2000 mg; 0.01 mg to 3000 mg; 0.01 mg to 4000 mg; 01 mg to 5000 mg; 0.01 mg to 0.1 mg/kg; 0.01 mg to 0.5 mg/kg; 0.01 mg to 1 mg/kg; 0.01 mg to 5 mg/kg; 0.01 mg to 10 mg/kg; 0.01 mg to 25 mg/kg; 0.01 mg to 50 mg/kg; 0.01 mg to 75 mg/kg; and 0.01 mg to 100 mg/kg.
The modified cannabinoids compounds of the present invention are useful for a variety of therapeutic applications. For example, the compounds are useful for treating or alleviating symptoms of diseases and disorders involving CB1 and CB2 receptors, including appetite loss, nausea and vomiting, pain, multiple sclerosis and epilepsy. For example, they may be used to treat pain (i.e. as analgesics) in a variety of applications including but not limited to pain management. In additional embodiments, such modified cannabinoids compounds may be used as an appetite suppressant. Additional embodiment may include administering the modified cannabinoids compounds.
By “treating” the present inventors mean that the compound is administered in order to alleviate symptoms of the disease or disorder being treated. Those of skill in the art will recognize that the symptoms of the disease or disorder that is treated may be completely eliminated, or may simply be lessened. Further, the compounds may be administered in combination with other drugs or treatment modalities, such as with chemotherapy or other cancer-fighting drugs.
Implementation may generally involve identifying patients suffering from the indicated disorders and administering the compounds of the present invention in an acceptable form by an appropriate route. The exact dosage to be administered may vary depending on the age, gender, weight and overall health status of the individual patient, as well as the precise etiology of the disease. However, in general, for administration in mammals (e.g. humans), dosages in the range of from about 0.01 to about 300 mg of compound per kg of body weight per 24 hr., and more preferably about 0.01 to about 100 mg of compound per kg of body weight per 24 hr., are effective.
Administration may be oral or parenteral, including intravenously, intramuscularly, subcutaneously, intradermal injection, intraperitoneal injection, etc., or by other routes (e.g. transdermal, sublingual, oral, rectal and buccal delivery, inhalation of an aerosol, etc.). In a preferred embodiment of the invention, the water-soluble cannabinoid analogs are provided orally or intravenously.
In particular, the phenolic esters of the invention are preferentially administered systemically in order to afford an opportunity for metabolic activation via in vivo cleavage of the ester. In addition, the water soluble compounds with azole moieties at the pentyl side chain do not require in vivo activation and may be suitable for direct administration (e.g. site specific injection).
The compounds may be administered in the pure form or in a pharmaceutically acceptable formulation including suitable elixirs, binders, and the like (generally referred to a “carriers”) or as pharmaceutically acceptable salts (e.g. alkali metal salts such as sodium, potassium, calcium or lithium salts, ammonium, etc.) or other complexes. It should be understood that the pharmaceutically acceptable formulations include liquid and solid materials conventionally utilized to prepare both injectable dosage forms and solid dosage forms such as tablets and capsules and aerosolized dosage forms. In addition, the compounds may be formulated with aqueous or oil based vehicles. Water may be used as the carrier for the preparation of compositions (e.g. injectable compositions), which may also include conventional buffers and agents to render the composition isotonic. Other potential additives and other materials (preferably those which are generally regarded as safe [GRAS]) include: colorants; flavorings; surfactants (TWEEN, oleic acid, etc.); solvents, stabilizers, elixirs, and binders or encapsulants (lactose, liposomes, etc). Solid diluents and excipients include lactose, starch, conventional disintergrating agents, coatings and the like. Preservatives such as methyl paraben or benzalkium chloride may also be used. Depending on the formulation, it is expected that the active composition will consist of about 1% to about 99% of the composition and the vehicular “carrier” will constitute about 1% to about 99% of the composition. The pharmaceutical compositions of the present invention may include any suitable pharmaceutically acceptable additives or adjuncts to the extent that they do not hinder or interfere with the therapeutic effect of the active compound.
The administration of the compounds of the present invention may be intermittent, bolus dose, or at a gradual or continuous, constant or controlled rate to a patient. In addition, the time of day and the number of times per day that the pharmaceutical formulation is administered may vary are and best determined by a skilled practitioner such as a physician. Further, the effective dose can vary depending upon factors such as the mode of delivery, gender, age, and other conditions of the patient, as well as the extent or progression of the disease. The compounds may be provided alone, in a mixture containing two or more of the compounds, or in combination with other medications or treatment modalities. The compounds may also be added to blood ex vivo and then be provided to the patient.
Genes encoding by a combination polynucleotide and/or a homologue thereof, may be introduced into a plant, and/or plant cell using several types of transformation approaches developed for the generation of transgenic plants. Standard transformation techniques, such as Ti-plasmid Agrobacterium-mediated transformation, particle bombardment, microinjection, and electroporation may be utilized to construct stably transformed transgenic plants.
As used herein, a “cannabinoid” is a chemical compound (such as cannabinol, THC or cannabidiol) that is found in the plant species Cannabis among others like Echinacea; Acmella Oleracea; Helichrysum umbraculigerum; Radula marginata (Liverwort) and Theobroma Cacao, and metabolites and synthetic analogues thereof that may or may not have psychoactive properties.
Cannabinoids therefore include (without limitation) compounds (such as THC) that have high affinity for the cannabinoid receptor (for example Ki<250 nM), and compounds that do not have significant affinity for the cannabinoid receptor (such as cannabidiol, CBD). Cannabinoids also include compounds that have a characteristic dibenzopyran ring structure (of the type seen in THC) and cannabinoids which do not possess a pyran ring (such as cannabidiol). Hence a partial list of cannabinoids includes THC, CBD, dimethyl heptylpentyl cannabidiol (DMHP-CBD), 6,12-dihydro-6-hydroxy-cannabidiol (described in U.S. Pat. No. 5,227,537, incorporated by reference); (3S,4R)-7-hydroxy-Δ6-tetrahydrocannabinol homologs and derivatives described in U.S. Pat. No. 4,876,276, incorporated by reference; (+)-4-[4-DMH-2,6-diacetoxy-phenyl]-2-carboxy-6,6-dimethylbicyclo[3.1.1]hept-2-en, and other 4-phenylpinene derivatives disclosed in U.S. Pat. No. 5,434,295, which is incorporated by reference; and cannabidiol (−)(CBD) analogs such as (−)CBD-monomethylether, (−)CBD dimethyl ether; (−)CBD diacetate; (−)3′-acetyl-CBD monoacetate; and ±AF 11, all of which are disclosed in Consroe et al., J. Clin. Phannacol. 21:428S-436S, 1981, which is also incorporated by reference. Many other cannabinoids are similarly disclosed in Agurell et al., Pharmacol. Rev. 38:31-43, 1986, which is also incorporated by reference.
As claimed herein, the term “cannabinoid” may also include different modified forms of a cannabinoid such as a hydroxylated cannabinoid or cannabinoid carboxylic acid. For example, if a glycosyltransferase were to be capable of glycosylating a cannabinoid, it would include the term cannabinoid as defined elsewhere, as well as the aforementioned modified forms. It may further include multiple glycosylation moieties.
Examples of cannabinoids are tetrahydrocannabinol, cannabidiol, cannabigerol, cannabichromene, cannabicyclol, cannabivarin, cannabielsoin, cannabicitran, cannabigerolic acid, cannabigerolic acid monomethylether, cannabigerol monomethylether, cannabigerovarinic acid, cannabigerovarin, cannabichromenic acid, cannabichromevarinic acid, cannabichromevarin, cannabidolic acid, cannabidiol monomethylether, cannabidiol-C4, cannabidivarinic acid, cannabidiorcol, delta-9-tetrahydrocannabinolic acid A, delta-9-tetrahydrocannabinolic acid B, delta-9-tetrahydrocannabinolic acid-C4, delta-9-tetrahydrocannabivarinic acid,delta-9-tetrahydrocannabivarin, delta-9-tetrahydrocannabiorcolic acid, delta-9-tetrahydrocannabiorcol,delta-7-cis-iso-tetrahydrocannabivarin, delta-8-tetrahydrocannabiniolic acid, delta-8-tetrahydrocannabinol, cannabicyclolic acid, cannabicylovarin, cannabielsoic acid A, cannabielsoic acid B, cannabinolic acid, cannabinol methylether, cannabinol-C4, cannabinol-C2, cannabiorcol, 10-ethoxy-9-hydroxy-delta-6a-tetrahydrocannabinol, 8,9-dihydroxy-delta-6a-tetrahydrocannabinol, cannabitriolvarin, ethoxy-cannabitriolvarin, dehydrocannabifuran, cannabifuran, cannabichromanon, cannabicitran, 10-oxo-delta-6a-tetrahydrocannabinol, delta-9-cis-tetrahydrocannabinol, 3, 4, 5, 6-tetrahydro-7-hydroxy-alpha-alpha-2-trimethyl-9-n-propyl-2, 6-methano-2H-1-benzoxocin-5-methanol-cannabiripsol, trihydroxy-delta-9-tetrahydrocannabinol, and cannabinol. Examples of cannabinoids within the context of this disclosure include tetrahydrocannabinol and cannabidiol.
The term “endocannabinoid” refer to compounds including arachidonoyl ethanolamide (anandamide, AEA), 2-arachidonoyl ethanolamide (2-AG), 1-arachidonoyl ethanolamide (1-AG), and docosahexaenoyl ethanolamide (DHEA, synaptamide), oleoyl ethanolamide (OEA), eicsapentaenoyl ethanolamide, prostaglandin ethanolamide, docosahexaenoyl ethanolamide, linolenoyl ethanolamide, 5(Z),8(Z),1 1 (Z)-eicosatrienoic acid ethanolamide (mead acid ethanolamide), heptadecanoul ethanolamide, stearoyl ethanolamide, docosaenoyl ethanolamide, nervonoyl ethanolamide, tricosanoyl ethanolamide, lignoceroyl ethanolamide, myristoyl ethanolamide, pentadecanoyl ethanolamide, palmitoleoyl ethanolamide, docosahexaenoic acid (DHA). Particularly preferred endocannabinoids are AEA, 2-AG, 1-AG, and DHEA.
Hydroxylation is a chemical process that introduces a hydroxyl group (—OH) into an organic compound. Acetylation is a chemical reaction that adds an acetyl chemical group. Glycosylation is the coupling of a glycosyl donor, to a glycosyl acceptor forming a glycoside.
The term “prodrug” refers to a precursor of a biologically active pharmaceutical agent (drug). Prodrugs must undergo a chemical or a metabolic conversion to become a biologically active pharmaceutical agent. A prodrug can be converted ex vivo to the biologically active pharmaceutical agent by chemical transformative processes. In vivo, a prodrug is converted to the biologically active pharmaceutical agent by the action of a metabolic process, an enzymatic process or a degradative process that removes the prodrug moiety to form the biologically active pharmaceutical agent.
The term “glycosidase inhibitor” and as used in the present invention is used to mean a compound, which can inhibit glycosidase enzymes which catalyst the hydrolysis of glycosidic bonds. Techniques for determining whether a compound acts as a glycosidase inhibitor will be well known to the skilled person, but may include, for example use of substrates such as p-nitrophenyl-glycosides, where the presence of an inhibitor will reduce the release of the colored p-nitrophenol when an appropriate glycosidase is present.
As used herein, the term “homologous” with regard to a contiguous nucleic acid sequence, refers to contiguous nucleotide sequences that hybridize under appropriate conditions to the reference nucleic acid sequence. For example, homologous sequences may have from about 70%-100, or more generally 80% to 100% sequence identity, such as about 81%; about 82%; about 83%; about 84%; about 85%; about 86%; about 87%; about 88%; about 89%; about 90%; about 91%; about 92%; about 93%; about 94% about 95%; about 96%; about 97%; about 98%; about 98.5%; about 99%; about 99.5%; and about 100%. The property of substantial homology is closely related to specific hybridization. For example, a nucleic acid molecule is specifically hybridizable when there is a sufficient degree of complementarity to avoid non-specific binding of the nucleic acid to non-target sequences under conditions where specific binding is desired, for example, under stringent hybridization conditions.
The term, “operably linked,” when used in reference to a regulatory sequence and a coding sequence, means that the regulatory sequence affects the expression of the linked coding sequence. “Regulatory sequences,” or “control elements,” refer to nucleotide sequences that influence the timing and level/amount of transcription, RNA processing or stability, or translation of the associated coding sequence. Regulatory sequences may include promoters; translation leader sequences; introns; enhancers; stem-loop structures; repressor binding sequences; termination sequences; polyadenylation recognition sequences; etc. Particular regulatory sequences may be located upstream and/or downstream of a coding sequence operably linked thereto. Also, particular regulatory sequences operably linked to a coding sequence may be located on the associated complementary strand of a double-stranded nucleic acid molecule.
As used herein, the term “promoter” refers to a region of DNA that may be upstream from the start of transcription, and that may be involved in recognition and binding of RNA polymerase and other proteins to initiate transcription. A promoter may be operably linked to a coding sequence for expression in a cell, or a promoter may be operably linked to a nucleotide sequence encoding a signal sequence which may be operably linked to a coding sequence for expression in a cell. A “plant promoter” may be a promoter capable of initiating transcription in plant cells. Examples of promoters under developmental control include promoters that preferentially initiate transcription in certain tissues, such as leaves, roots, seeds, fibers, xylem vessels, tracheids, or sclerenchyma. Such promoters are referred to as “tissue-preferred.” Promoters which initiate transcription only in certain tissues are referred to as “tissue-specific.” A “cell type-specific” promoter primarily drives expression in certain cell types in one or more organs, for example, vascular cells in roots or leaves. An “inducible” promoter may be a promoter which may be under environmental control. Examples of environmental conditions that may initiate transcription by inducible promoters include anaerobic conditions and the presence of light. Tissue-specific, tissue-preferred, cell type specific, and inducible promoters constitute the class of “non-constitutive” promoters. A “constitutive” promoter is a promoter which may be active under most environmental conditions or in most cell or tissue types.
Any inducible promoter can be used in some embodiments of the invention. See Ward et al. (1993) Plant Mol. Biol. 22:361-366. With an inducible promoter, the rate of transcription increases in response to an inducing agent. Exemplary inducible promoters include, but are not limited to: Promoters from the ACEI system that responds to copper; In2 gene from maize that responds to benzenesulfonamide herbicide safeners; Tet repressor from Tn10; and the inducible promoter from a steroid hormone gene, the transcriptional activity of which may be induced by a glucocorticosteroid hormone are general examples (Schena et al. (1991) Proc. Natl. Acad. Sci. USA 88:0421).
As used herein, the term “transformation” or “genetically modified” refers to the transfer of one or more nucleic acid molecule(s) into a cell. A plant is “transformed” or “genetically modified” by a nucleic acid molecule transduced into the plant when the nucleic acid molecule becomes stably replicated by the plant. As used herein, the term “transformation” or “genetically modified” encompasses all techniques by which a nucleic acid molecule can be introduced into, such as a plant.
The term “vector” refers to some means by which DNA, RNA, a protein, or polypeptide can be introduced into a host. The polynucleotides, protein, and polypeptide which are to be introduced into a host can be therapeutic or prophylactic in nature; can encode or be an antigen; can be regulatory in nature, etc. There are various types of vectors including virus, plasmid, bacteriophages, cosmids, and bacteria.
As is known in the art, different organisms preferentially utilize different codons for generating polypeptides. Such “codon usage” preferences may be used in the design of nucleic acid molecules encoding the proteins and chimeras of the invention in order to optimize expression in a particular host cell system.
An “expression vector” is nucleic acid capable of replicating in a selected host cell or organism. An expression vector can replicate as an autonomous structure, or alternatively can integrate, in whole or in part, into the host cell chromosomes or the nucleic acids of an organelle, or it is used as a shuttle for delivering foreign DNA to cells, and thus replicate along with the host cell genome. Thus, an expression vector are polynucleotides capable of replicating in a selected host cell, organelle, or organism, e.g., a plasmid, virus, artificial chromosome, nucleic acid fragment, and for which certain genes on the expression vector (including genes of interest) are transcribed and translated into a polypeptide or protein within the cell, organelle or organism; or any suitable construct known in the art, which comprises an “expression cassette.” In contrast, as described in the examples herein, a “cassette” is a polynucleotide containing a section of an expression vector of this invention. The use of the cassettes assists in the assembly of the expression vectors. An expression vector is a replicon, such as plasmid, phage, virus, chimeric virus, or cosmid, and which contains the desired polynucleotide sequence operably linked to the expression control sequence(s).
A polynucleotide sequence is operably linked to an expression control sequence(s) (e.g., a promoter and, optionally, an enhancer) when the expression control sequence controls and regulates the transcription and/or translation of that polynucleotide sequence.
Unless otherwise indicated, a particular nucleic acid sequence also implicitly encompasses conservatively modified variants thereof (e.g., degenerate codon substitutions), the complementary (or complement) sequence, and the reverse complement sequence, as well as the sequence explicitly indicated. Specifically, degenerate codon substitutions may be achieved by generating sequences in which the third position of one or more selected (or all) codons is substituted with mixed-base and/or deoxyinosine residues (see e.g., Batzer et al., Nucleic Acid Res. 19:5081 (1991); Ohtsuka et al., J. Biol. Chem. 260:2605-2608 (1985); and Rossolini et al., Mol. Cell. Probes 8:91-98 (1994)). Because of the degeneracy of nucleic acid codons, one can use various different polynucleotides to encode identical polypeptides. Table 1a, infra, contains information about which nucleic acid codons encode which amino acids.
The term “plant” or “plant system” includes whole plants, plant organs, progeny of whole plants or plant organs, embryos, somatic embryos, embryo-like structures, protocorms, protocorm-like bodies (PLBs), and culture and/or suspensions of plant cells. Plant organs comprise, e.g., shoot vegetative organs/structures (e.g., leaves, stems and tubers), roots, flowers and floral organs/structures (e.g., bracts, sepals, petals, stamens, carpels, anthers and ovules), seed (including embryo, endosperm, and seed coat) and fruit (the mature ovary), plant tissue (e.g., vascular tissue, ground tissue, and the like) and cells (e.g., guard cells, egg cells, trichomes and the like). The invention may also include Cannabaceae and other Cannabis strains, such as C. sativa generally.
The term “expression,” as used herein, or “expression of a coding sequence” (for example, a gene or a transgene) refers to the process by which the coded information of a nucleic acid transcriptional unit (including, e.g., genomic DNA or cDNA) is converted into an operational, non-operational, or structural part of a cell, often including the synthesis of a protein. Gene expression can be influenced by external signals; for example, exposure of a cell, tissue, or organism to an agent that increases or decreases gene expression. Expression of a gene can also be regulated anywhere in the pathway from DNA to RNA to protein. Regulation of gene expression occurs, for example, through controls acting on transcription, translation, RNA transport and processing, degradation of intermediary molecules such as mRNA, or through activation, inactivation, compartmentalization, or degradation of specific protein molecules after they have been made, or by combinations thereof. Gene expression can be measured at the RNA level or the protein level by any method known in the art, including, without limitation, Northern blot, RT-PCR, Western blot, or in vitro, in situ, or in vivo protein activity assay(s).
The term “nucleic acid” or “nucleic acid molecules” include single- and double-stranded forms of DNA; single-stranded forms of RNA; and double-stranded forms of RNA (dsRNA). The term “nucleotide sequence” or “nucleic acid sequence” refers to both the sense and antisense strands of a nucleic acid as either individual single strands or in the duplex. The term “ribonucleic acid” (RNA) is inclusive of iRNA (inhibitory RNA), dsRNA (double stranded RNA), siRNA (small interfering RNA), mRNA (messenger RNA), miRNA (micro-RNA), hpRNA (hairpin RNA), tRNA (transfer RNA), whether charged or discharged with a corresponding acetylated amino acid), and cRNA (complementary RNA). The term “deoxyribonucleic acid” (DNA) is inclusive of cDNA, genomic DNA, and DNA-RNA hybrids. The terms “nucleic acid segment” and “nucleotide sequence segment,” or more generally “segment,” will be understood by those in the art as a functional term that includes both genomic sequences, ribosomal RNA sequences, transfer RNA sequences, messenger RNA sequences, operon sequences, and smaller engineered nucleotide sequences that encoded or may be adapted to encode, peptides, polypeptides, or proteins.
The term “gene” or “sequence” refers to a coding region operably joined to appropriate regulatory sequences capable of regulating the expression of the gene product (e.g., a polypeptide or a functional RNA) in some manner. A gene includes untranslated regulatory regions of DNA (e.g., promoters, enhancers, repressors, etc.) preceding (up-stream) and following (down-stream) the coding region (open reading frame, ORF) as well as, where applicable, intervening sequences (i.e., introns) between individual coding regions (i.e., exons). The term “structural gene” as used herein is intended to mean a DNA sequence that is transcribed into mRNA which is then translated into a sequence of amino acids characteristic of a specific polypeptide.
A nucleic acid molecule may include either or both naturally occurring and modified nucleotides linked together by naturally occurring and/or non-naturally occurring nucleotide linkages. Nucleic acid molecules may be modified chemically or biochemically, or may contain non-natural or derivatized nucleotide bases, as will be readily appreciated by those of skill in the art. Such modifications include, for example, labels, methylation, substitution of one or more of the naturally occurring nucleotides with an analog, internucleotide modifications (e.g., uncharged linkages: for example, methyl phosphonates, phosphotriesters, phosphoramidates, carbamates, etc.; charged linkages: for example, phosphorothioates, phosphorodithioates, etc.; pendent moieties: for example, peptides; intercalators: for example, acridine, psoralen, etc.; chelators; alkylators; and modified linkages: for example, alpha anomeric nucleic acids, etc.). The term “nucleic acid molecule” also includes any topological conformation, including single-stranded, double-stranded, partially duplexed, triplexed, hair-pinned, circular, and padlocked conformations.
As used herein with respect to DNA, the term “coding sequence,” “structural nucleotide sequence,” or “structural nucleic acid molecule” refers to a nucleotide sequence that is ultimately translated into a polypeptide, via transcription and mRNA, when placed under the control of appropriate regulatory sequences. With respect to RNA, the term “coding sequence” refers to a nucleotide sequence that is translated into a peptide, polypeptide, or protein. The boundaries of a coding sequence are determined by a translation start codon at the 5′-terminus and a translation stop codon at the 3′-terminus. Coding sequences include, but are not limited to: genomic DNA; cDNA; EST; and recombinant nucleotide sequences.
The term “sequence identity” or “identity,” as used herein in the context of two nucleic acid or polypeptide sequences, refers to the residues in the two sequences that are the same when aligned for maximum correspondence over a specified comparison window.
The term “recombinant” when used with reference, e.g., to a cell, or nucleic acid, protein, or vector, indicates that the cell, organism, nucleic acid, protein or vector, has been modified by the introduction of a heterologous nucleic acid or protein, or the alteration of a native nucleic acid or protein, or that the cell is derived from a cell so modified. Thus, for example, recombinant cells may express genes that are not found within the native (nonrecombinant or wild-type) form of the cell or express native genes that are otherwise abnormally expressed—over-expressed, under expressed or not expressed at all.
The terms “approximately” and “about” refer to a quantity, level, value or amount that varies by as much as 30%, or in another embodiment by as much as 20%, and in a third embodiment by as much as 10% to a reference quantity, level, value or amount. As used herein, the singular form “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise.
As used herein, “heterologous” or “exogenous” in reference to a nucleic acid is a nucleic acid that originates from a foreign species, or is synthetically designed, or, if from the same species, is substantially modified from its native form in composition and/or genomic locus by deliberate human intervention. A heterologous protein may originate from a foreign species or, if from the same species, is substantially modified from its original form by deliberate human intervention. By “host cell” is meant a cell which contains an introduced nucleic acid construct and supports the replication and/or expression of the construct. Host cells may be prokaryotic cells such as E. coli, or eukaryotic cells such as fungi, yeast, insect, amphibian, nematode, or mammalian cells. Alternatively, the host cells are monocotyledonous or dicotyledonous plant cells. An example of a monocotyledonous host cell is a maize host cell.
The present inventors have demonstrated that cannabinoids can be functionalized in an in vivo plant system. Specifically, the present inventors utilized cytochrome P450 monooxygenases (CYP) to modify or functionalize the chemical structure of cannabinoids. As shown below, CYPs do this by inserting an oxygen atom into hydrophobic molecules to make them more reactive and hydrophilic. A representative reaction may include the generalized reaction in
The P450 enzyme system involves several cytochrome P450 species and nonspecific cytochrome P450 oxidoreductases. As shown in
The present inventors have demonstrated that overexpression enhanced in vivo hydroxylation and glycosylation of CBDA in an exemplary plant system. Specifically, as generally shown in
As generally shown in
The present inventors demonstrated the biosynthesis of modified functionalized as well as water-soluble cannabinoids in both in vitro as well as in vivo plant system. Specifically, the present inventors identified the cannabinoid biotransformations associated with the gene constructs in both in vitro assays and transient leaf expression. Through the use of accurate mass spectrometry measurements, the present inventors were able to identify and confirm the biosynthesis of modified water-soluble cannabinoids.
Specifically, as generally shown in
Tables 1 and 2 are provided below further demonstrating the production of the select modified cannabinoid molecules. Generally referring to Tables 1-2 below, the present inventors demonstrated that based on the reduced retention time in the water: acetonitrile HPLC gradient, the glycosylated and hydroxylated cannabinoids, which eluted earlier than their non-modified forms, are demonstrated to be more water soluble than their non-modified forms.
As shown in
In one embodiment of the present inventive technology, the gene construct may be used to transform a plant cell that may further be configured to be cultured in a suspension culture. In one preferred embodiment, a cannabis cell may be transformed with the construct generally outline in
As generally shown in
The gene and protein sequence identifications for CBDA synthase are provided as SEQ ID NO's 5 and 6 respectively. It should be noted that a variety of cannabinoid synthase genes/proteins may be used with the current inventive technology, CBDA synthase being exemplary only. Indeed, it is specifically contemplated that the synthase enzyme associated with any of the cannabinoids identified herein may be incorporated into the current invention without undue experimentation. In one embodiment, one or more of such exogenous or endogenous synthase enzyme may further have the trichome targeting sequence excised, again, a step that can be readily accomplished without undue experimentation. Example may THCA synthase, CBG synthase, THCA synthase, CBDA synthase or CBCA synthase, which may in this embodiment have their trichome targeting sequence had been removed.
The gene and protein sequence identifications for glycosyltransferase 76G1 from Stevia rebaudiana are provided as SEQ ID NO's. 7, and 8 respectively. The gene and protein sequence identifications for the multi-drug ABC transporter ABCG2 are provided as SEQ ID NO's 9 and 10 respectively.
As shown in
The present inventors have developed a plurality of systems for the biosynthesis and modification of cannabinoids based on cellular location using novel methods of protein targeting. As shown in Table 10, the present inventors designed such novel systems and methods to enhance production and modification (glycosylation, acetylation and functionalization) of cannabinoids as well as to mitigate toxicity resulting from cannabinoid accumulation. Certain embodiments, included the expression of a MYB transcription factor and a catalase (
The present inventors have demonstrated the enhanced in vivo modification of cannabinoids in transgenic plants co-infected with constructs for glycosylation, P450-mediated functionalization (hydroxylation) and detoxification of hydrogen peroxide by catalase. As further shown in
The present inventors also compared the activities of endogenous and transgenic glycosyltransferase activities in tobacco. Specifically, as shown in
In certain embodiment, glycosyltransferases from tobacco, or other plants may be used as herein described. In one embodiment, one or more heterologous or homologous glycosyltransferases may be expressed or over expressed in a plant, such as tobacco or Cannabis. Gene and protein sequences for exemplary glycosyltransferases are identified below in Table 9.
As shown in
SEQ ID NO. 17 is identified as the polynucleotide gene sequence for a CBDA synthase having a trichome targeting sequence. SEQ ID NO. 18 is identified as the corresponding protein sequence for a CBDA synthase having a trichome targeting domain.
SEQ ID NO. 19 is identified as the polynucleotide gene sequence for a trichome-targeted UDP-glycosyltransferase (76G1) coding sequence, in this instance being optimized for Arabidopsis thaliana expression, although other codon optimized versions fall within the scope of this invention. SEQ ID NO. 20 is identified as the corresponding protein sequence for a UDP-glycosyltransferase (76G1) having a trichome targeting domain.
SEQ ID NO. 21 is identified as the polynucleotide gene sequence for a UDP-glucose/galactose transporter (UTR1) having a plasma-membrane targeting sequence.
As shown in
The present inventors have demonstrated a system of cytosolic-targeted cannabinoid synthesis and glycosylation. By targeting or localizing, CBDA synthase (CBDAs) and UDP-glycosyltransferase 76G1 (UGT) to the cytosol, the present inventors demonstrated that plants expressing these heterologous genes produce and accumulate, in this embodiment, CBDA and its glycosylated derivatives (primary, secondary glycoside), as well as other CBDA derivatives, in the cytosol. As shown in
SEQ ID NO. 22 is identified as the polynucleotide gene sequence for a, cannabidiolic acid synthase with the trichome target sequence removed (cytCBDAs). SEQ ID NO. 23 is identified as the corresponding protein sequence of cytCBDAs.
SEQ ID NO. 24 is identified as the polynucleotide gene sequence for a, Cytosolic-targeted UDP-glycosyltransferase (UGT76G1) coding sequence (optimized for Arabidopsis thaliana expression) (cytUGT76G1 or cytUTG). SEQ ID NO. 25 is identified as the corresponding protein sequence of cytUGT76G1 or cytUTG.
As an exemplary plant model, N. benthamiana plants were grown from seed and after 4 weeks of vegetative growth, leaves were co-infiltrated with Agrobacterium tumefaciens GV3101 carrying the following constructs: Cytosolic CBDAs+Cytosolic UGT in pRI201-AN or cell suspension construct, Myb/catalase in pRI201-AN, and p19 silencing suppressor in pDGB3alpha2. Agrobacterium density was normalized to 2 at absorbance of 600 nm using a spectrophotometer and cultures co-infiltrated in same ratio (1:1:1). After 2 and 4 days post-Agrobacterium infiltration (DPI), 1 mL CBGA (2.7 mM) dissolved in 0.1% Tween 20 (Sigma-Aldrich) or 0.1% Triton X-100 (Sigma-Aldrich) was infiltrated to each leaf In a second embodiment using the cytosolic construct, 4 mM UDP-glucose was added to the CBGA media before feeding. Three biological replicates were used. RT-PCR primers are outlined in Table 5 below.
As shown in
The present inventors demonstrate the glycosylation and hydroxylation of cannabinoids in Cannabis sativa. To further confirm our findings using N. benthamiana as a plant model, we performed Agrobacterium infiltration of the same plasmid constructs described in the section above in various strains of Cannabis sativa (see
As the present inventors have demonstrated, in one embodiment, where the cytosolic construct was con-transformed with the Myb/catalase (MYBCAT) expression vector, yielded the highest detection of CBDA and CBDA glycoside, demonstrating the role of these genes in mitigating toxicity effects due to hydrogen peroxide accumulation (catalase) and overall increase in cannabinoid synthesis (Myb transcription factor).
Four glycosyltransferases from Nicotiana tabacum (NtGT1, NtGT2, NtGT4, NtGT5), one from Stevia rebaudiana (UGT76G1), and Escherichia coli catalase E (Kat-E) encoding sequences were codon-optimized for expression in Pichiapastoris, synthesized by Genewiz, and cloned into pPink-HC or pPINK-αHC vector as described in the PichiaPink expression system manual (Invitrogen). The assembled constructs were verified by restriction enzyme digestion and DNA sequencing. Each of the constructs was used to transform the wild-type strain (strain 4). Transgene expression in transgenic yeast and expression was verified by RT-PCR (
The present inventors demonstrated that after transformation of vectors into the wild type yeast strain, white colonies were selected and transferred into 250 mL flasks containing 50 mL YPG media (yeast extract, peptone, glycerol). After overnight growth (the cultures reached an OD600˜1), 100% methanol was added at 5% v/v to induce gene expression overnight. The following morning, cultures were aliquoted into 3×10 mL cultures, centrifuged and resuspended in fresh YPG media with 2.5% v/v methanol, and 50 uL of CBDA in acetonitrile (1 mg/mL, Cayman Chem) was added to a final concentration of 14 uM. After 72 hs, the samples were centrifuged down and the cell pellet and supernatant were separately frozen in liquid nitrogen and stored at −80° C. for further LC/MS analysis of cannabinoids.
The present inventors demonstrate that intracellular expression of NtGT4 (construct outlined in
The present inventors demonstrate that intracellular expression of NtGT5, the 7-deoxyloganetin glycosyltransferase-like from Nicotiana tabacum, led to glycosylation of CBDA (
As described above, in one exemplary embodiment, an expression vector was used by the present inventors to secrete proteins into the media for an extracellular glycosylation of cannabinoids. Transgenic yeast lines expressing glycosyltransferases with the α-factor secretion signal (
To determine the optimum time for cannabinoid glycosylation in yeast, the present inventors set up a time course experiment. Transgenic yeast expressing NtGT4 intracellularly were fed with CBDA (27 μM) and incubated for up to 96 hours. Samples were collected at different time points during the incubation and analyzed for the formation of CBDA glycosides (See
Similar to yeast suspension cultures, plant cell cultures are a viable platform for the production of recombinant proteins because they can be cultivated under sterile conditions and can be scaled up in fermenters for industrial level production. One of the most widely used cell lines in plant biology is the tobacco Bright Yellow 2 (BY2) cell line developed in 1968 at the Hatano Tobacco Experimental Station, Japan Tobacco Company. BY2 cells have a doubling time of 16-24 hours, multiplying up to a 100-fold in 7 days t al., 2016), can be easily transformed by Agrobacterium mediated transformation and require basic plant growth media for maintenance. As described above, the prevent inventors demonstrated endogenous glycosylation in tobacco leading to the possibility of using tobacco suspension cultures as a postharvest glycosylation platform. In this embodiment, the present inventors introduced wild-type and transgenic BY2 cells expressing the Stevia glycosyltransferase UGT76G1 (SEQ ID NO. 61 and SEQ ID NO. 62) and the multidrug resistance transporter ABCG2 (319C) (SEQ ID NO. 67 and SEQ ID NO. 67) with 5 μM CBDA in acetonitrile and grew the cultures for 3 days. Confirmation of transgene expression in BY2 cells was done by RT-PCR with primers amplifying a ˜0.5 kb region of the transgene (
For the CBDA 1× O acetyl glycoside, glycosylation was observed in the wild type more than in transgenic lines. For all other forms of glycosylated CBDA, the transgenic line 319C had increased glycosylation compared to the wild type. The present inventors ran a comparison between glycosylation in yeast and tobacco yields, normalizing with pellet mass (
As demonstrated in the figures, in general, a more diverse range of glycosylated products were obtained in tobacco compared to yeast (see chromatograms in
Additional embodiments of the current invention may include the transformation of tobacco, yeast or plant cells, such as Cannabis, with one or more exogenous P450 genes. In one preferred embodiment, this may include Cytochrome P450 (CYP3A4) from Mus musculus (SEQ ID NO. 69 and 70) as well as P450 oxidoreductase gene (CYP oxidoreductase) from Mus musculus (SEQ ID NO. 71 and 72). In some embodiment, the aforementioned gene may be codon optimized for expression in yeast cells.
As generally described in
In
The present inventors demonstrated the in vivo functionalization and glycosylation of cannabinoids in a model plant system. Specifically, the present inventors used N. benthamiana (tobacco) as a model system to demonstrate in vivo functionalization and glycosylation of cannabinoids. In this embodiment, transient transformation through Agrobacterium infiltration was performed in N. benthamiana. The present inventors demonstrated expression of heterologous genes that were expressed in transformed N. benthamiana using a number of heterologous gene expression vectors (described below). In this exemplary embodiment, upon confirmation of expression of the heterologous genes that would functionalize and glycosylate cannabinoid molecules, the present inventors introduced to the plants select cannabinoid compounds. In this embodiment, the present inventors introduced to the transgenic N. benthamiana plants cannabigerolic acid (CBGA) and/or cannabidiolic acid (CBDA). The present inventors also demonstrated the in vivo functionalization and glycosylation of cannabinoids in a cell suspension culture. Specifically, the inventors used exemplary tobacco bright yellow (BY2) cells as a cell suspension system for studies of cannabinoid production, functionalization and/or glycosylation.
The present inventors used Agrobacterium tumefaciens Ti-plasmid-mediated transformation with the plant expression vector pRI201-AN (Takara Bio USA), a binary vector for high-level expression of a foreign gene in dicotyledonous plants carrying the constitutive 35S promoter and an Arabidopsis thaliana Alcohol dehydrogenase (AtAdh) as a translational enhancer (Matsui et al. 2012). N. benthamiana was transiently transformed according to the method described by Sparkes et al. 2006. Overnight cultures of Agrobacterium strain GV3101 were transferred to a 250 mL flask with 50 mL LB medium supplemented with 50 mg/L of Kanamycin, 50 mg/L of Gentamycin and 10 mg/L of Rifampicin and grown for 4-8 hours until the optical density at 600 nm (OD600) reached approximately between 0.75 and 1. The cells were pelleted in a centrifuge at room temperature and resuspended in 45 mL of infiltration medium containing 5 g/L D-glucose, 10 mM MES, 10 mM MgCl2 and 100 μM acetosyringone. 1 ml of the solution was used to infiltrate the leaves using a 1 mL syringe. Expression of the transgene(s) was confirmed 2-4 days after infiltration by RT-PCR. For RT-PCR analysis, 100 mg of leaf tissue were frozen in liquid nitrogen and ground in a TissueLyser (QIAGEN Inc, USA). RNA was extracted following the EZNA plant RNA extraction kit (Omega Bio-tek Inc, USA). Up to a microgram of total RNA was used to synthesize cDNA using the superscript III cDNA synthesis kit (Thermo Fisher Scientific, USA). The cDNA was used to check for the expression of transgene(s) by RT-PCR.
Select enzyme substrates were introduced to the transgenic or genetically modified N. benthamiana strain two days after Agrobacterium infiltration and upon confirmation of transgene expression by RT-PCR. In this example, approximately 277 μM cannabigerolic acid (CBGA) and/or cannabidiolic acid (CBDA) was dissolved in 1 mL of buffer containing 10 mM MES, 10 mM MgCl2 and 0.1% Triton X100 or 0.1% Tween20 and applied to the transformed leaves either by infiltration or by dabbing with a cotton applicator. Plants were harvested after 1-4 days, weighed for fresh weight and frozen at −80° C. before conducting LC-MS analysis for the presence of modified cannabinoids.
CBDA synthase is generally active in the pH range 4-6 (Taura et al. 1996) while glycosyltransferases are typically active in the pH range 5.0 to 7.0 (Rini and Esko, 2017). Based on this difference in optimal pH for enzyme activity, the present inventors generated a single extraction buffer for a combined assay of CBDA synthase and UDP glycosyltransferase at pH 6 and 30° C. in in vitro assays (Priest et al., 2006). The present inventors ground the transformed leaf tissue in liquid nitrogen. A grinding buffer was added consisting of 50 mM MES, pH 6, 1 mM EDTA, 5 mM β-mercaptoethanol and 0.1% Triton X-100 was added at 5:1 ratio of buffer to fresh weight of plant using a mortar and pestle. The extract was filtered on ice through 2 layers of cheesecloth to remove debris and centrifuged at 21000 g for 5 minutes at 4° C. The supernatant was used in subsequent assays. Protein concentration of the supernatant was quantified by the Bradford assay, using bovine serum albumin as the standard. To start the reaction, 100-200 μg of crude total protein was used. The assay was carried out with and without UDP-glucose to check if glycosylation of cannabinoid substrate was preventing downstream reactions or transport of CBGA. Wild type plants were used as controls to separate endogenous from overexpressed UDP glycosyltransferase activity. The reaction was started by adding 100 μg of protein, and 8 mM uridine diphosphate glucose (UDPG) as the sugar-nucleotide donor to a reaction mixture consisting of approximately 277 μM CBGA, 0.1% (w/v) Triton X-100, 3 mM MgCl2 and 50 mM MES (pH 6.0). The reaction was incubated at 30° C. for 3 h or overnight for 14 hours. The reaction was terminated by freezing in liquid nitrogen and the samples were stored at −80° C. before LC-MS analysis.
As an exemplary plant model, N. benthamiana plants were grown from seed and, after 4 weeks of vegetative growth, the leaves were co-infiltrated with Agrobacterium tumefaciens GV3101 carrying the following constructs: Trichome CBDAs+trichome UGT in pRI201-AN (trichome construct), PM-UTR1 in pRI201-AN, and p19 silencing suppressor in pDGB3alpha2. In a second experiment, leaves were also infiltrated with the Agrobacterium expressing a Ti-plasmid with the Myb/catalase genes. Agrobacterium density was normalized to 1 or 2 at absorbance of 600 nm using a spectrophotometer and cultures co-infiltrated in same ratio (1:1:1). After 1 and 4 days post-Agrobacterium infiltration (DPI), 1 mL CBGA (277 μM) dissolved in 0.1% Tween20 (Sigma-Aldrich) or 3% DMSO (Sigma-Aldrich) was infiltrated to each leaf. Three biological replicates were used. The experiment was repeated twice. After preliminary results, Agrobacterium densities of 2 at OD600 were selected for all following infiltration experiments. Moreover, 0.1% Tween20 was chosen over DMSO 3% due to better solubilizing CBGA substrate.
In this embodiment, leaf samples were collected at 2 DPI and immediately frozen in liquid nitrogen. RNA extraction was done using RNA plant mini-kit as described by manufacturer (Qiagen). cDNA was synthesized using RNA to cDNA Ecodry Premix as described by manufacturer (Takara). Template cDNA was normalized to 50 ng of corresponding total RNA per reaction. Annealing temperature in Celsius: 60. Extension time: 15s. 35 cycles. Q5 DNA polymerase kit used as described by manufacturer (New England Biolabs). RT-PCR primers are outlined in Table 5 below.
The present inventors performed Agrobacterium tumefaciens-mediated transient transformation of Cannabis sativa. The experimental groups consisted of young leaves of high CBD variety (˜10% in dried flowers) and trichome leaves of high THC variety (˜20% dried flowers).
To transform leaves of high CBD varieties, the present inventors germinated 100 seeds three times; this was done to ensure that a sufficient number of plants would be available for all 9 independent transformation events. To transform trichome leaves, the present inventors used small trichome-containing leaves of several varieties known to be high THC varieties. Experimental set up consisted of 2 different Agrobacterium tumefaciens strains. For transient transformation of Agrobacterium strain EHA 105, the present inventors grew cells in 10 ml of LB medium supplemented with 100 mg/L of Rifampicin and 50 mg/L of Kanamycin and for Agrobacterium strain GV3101::6000 cells were grown with 50 mg/L of Kanamycin, 25 mg/L of Gentamycin and 50 mg/L of Rifampicin. A single Agrobacterium colony was used for inoculation and grown overnight. Then, 1 ml of this culture was inoculated into 500 ml of aforementioned LB medium supplemented with 20 μM acetosyringone. Agrobacteria were grown to OD600 of approximately between 1 and 1.5. The cells were pelleted in a centrifuge at room temperature and resuspended in infiltration medium containing 10 mM MES, 10 mM MgCl2 and 200 μM acetosyringone to an OD600 of 0.5.
Bacterial culture was then used for three different types of Cannabis Sativa transformations. In all cases, transformation was done in the form of co-transformation, mixing all relevant strains (plasmids) in equal proportion of cell numbers. First, for the present inventors infiltrated young (two weeks old) fully expended Cannabis sativa plants using 1 ml syringe. Prior to transformation, plants were kept under plastic cover, to ensure maximum softness of the leaves. Infiltration was performed from abaxial side, ensuring that the entire surface of the leaf is infiltrated at 12/h/12 h day/night at 22° C.
Second, the present inventors vacuum infiltrated detached young (two weeks old) fully expended Cannabis sativa leaves. Prior to transformation, plants were kept under plastic cover, to ensure maximum softness of the leaves. Leaves were then placed on half-strength Murashige and Skoog (1962) (½ MS) agar supplemented with 61.8 mM ammonium nitrate and incubated for 5 days at 12/h/12 h day/night at 22° C.
Third, trichome leaves were detached, placed into 50 ml Falcon tubes and vacuum infiltrated with aforementioned bacterial solution 2× for 10 min each. Leaves were then placed on ½ MS agar supplemented with 61.8 mM ammonium nitrate and incubated for 5 days.
All experiments were done in triplicates, with the fourth replicate done for collection of DNA/RNA and staining X-gluc for measuring the activity of beta-glucuronidase (GUS) after co-infiltration with Agrobacterium-containing GUS gene. In all cases, leaves were harvested after 5 days of transformation, frozen in liquid nitrogen and stored at −80° C.
Fresh transformed plant material was harvested from greenhouse experiments in 15 or 50 mL polypropylene centrifuge tubes and flash frozen in liquid N2. The frozen plant material was enzymatically quenched by submersing the plant material in boiling methanol for 2 min. The methanol-quenched material was homogenised using a P-10-35 homogenizer (Kinematica, Bohemia NY). The homogenate was extracted by brief agitation in a final volume of 10 mL or 30 mL 70% methanol (v/v) respective to tube size. The resulting extracts were clarified by centrifugation at 2,500 rpm at 4° C. for 15 minutes in a Beckman J-6B floor centrifuge (Beckman Coulter, Indianapolis IN). The supernatant was transferred into a polypropylene tube and evaporated under a stream of N2 at 45° C. until dried. The extracts were reconstituted in methanol containing 20 μg/mL of the internal standard 7-Hydroxyoumarin (Sigma-Aldrich, H24003). The reconstituted extracts were placed into 1.5 mL microfuge tubes and clarified in a microcentrifuge at 10,000 g for 15 min. 500 μL of the supernatant was transferred to a 2 mL auto sampler vial and kept at 4° C. until analysis. In vitro assays sample preparation: samples were syringed filtered through 0.45 μm PVDF membrane into a 2 mL auto sampler vial.
Fresh plant material was harvested from plants grown in chamber in 1.5 mL polypropylene centrifuge tubes and flash frozen in liquid N2. The frozen plant material was homogenized using pestle and mortar and enzymatically quenched by submersing the plant material in boiling 100% ethanol for 2 min. Homogenized solution was diluted to 70% ethanol. The resulting extracts were clarified by centrifugation at 2,500 rpm at 4° C. for 15 minutes in Eppendorf centrifuge (Centrifuge 5415 R). The supernatant was transferred into a polypropylene tube and concentrated three times using vacuum centrifuge (Speedvac SC110, Savant). 2 μl of 20 μg/mL of the internal standard Umbelliferone (Sigma-Aldrich, H24003) was added to 98 μl of concentrated extract and taken for analysis.
The present inventor used liquid chromatography mass spectrometry to confirm functionalization and glycosylation of cannabinoids in the exemplary plant systems described herein. Specifically, mass spectrometry was performed on a quadrupole time-of-flight (QTOF) mass spectrometer (QTOF Micro, Waters, Manchester, UK) equipped with a Lockspray™ electrospray ion source coupled to a Waters Acquity UPLC system (Waters, Manchester, UK). Mass spectra were collected in the negative electrospray ionization mode (ESI−). The nebulization gas was set to 400 L/h at a temperature of 350° C., the cone gas was set to 15 L/H and the source temperature was set to 110° C. A capillary voltage and cone voltage were set to 2500 and 35 V, respectively. The MCP detector voltage was set to 2500 V. The Q-TOF micro MS acquisition rate was set to 1.0 s with a 0.1 s interscan delay. The scan range was from 100 to 1500 m/z. Data was collected in continuum mode. A lockmass solution of 50 ppm raffinose (503.1612 m/z) in 50:50 water:methanol was delivered at 20 μL/min through an auxiliary pump and acquired every 10 s during the MS acquisition. Separations were performed on a Waters HSS T3 C18 column (2.1×100 mm, particle size 1.8 m) using a Waters ACQUITY UPLC System, equipped with an ACQUITY Binary Solvent Manager, ACQUITY Column Manager and ACQUITY Sample Manager (10 μL sample loop, partial loop injection mode, 5 μL injection volume, 4° C.). Eluents A and B were water and acetonitrile, respectively, both containing 0.1% formic acid. Elution was performed isocratically for 0.5 min at 10% eluent B and then linear gradient 100% eluent B in 14.5 min, and isocratically for 3 min at 100% eluent B. The column was re-equilibrated for 6 min. The flow rate was set to 250 μL/min and the column temperature was maintained at 30° C.
Identification of individual cannabinoid analogs was performed by the present inventors, by their corresponding accurate mass shifts by Metabolynx (Waters Corp., Milford, USA). The method parameters for data processing were set as follows: retention time range 0.1-18 min, mass range 100-1500 Da, retention time tolerance 0.2 min, mass tolerance 0.05 Da, peak intensity threshold 14. Accurate mass measure of the continuum data was performed using the raffinose lock mass. Raw chromatographic data were additionally processed for extracted ion chromatogram sand peak area integration using Masslynx 4.1 (Waters Corp., Milford, USA). The select cannabinoids, CBGA and CBDA were identified and quantitated using certified reference materials (Cerilliant, Round Rock, TX). All chemical structures and physiochemical and constitutional properties were generated using ChemDoodle version 8.1.0 (IChemLabs™ Chesterfield, VA).
The present inventors generated an exemplary yeast-cell expression system based on the methylotrophic yeast Pichia pastoris (Komagataella phaffii) was used in this work. The Pichiapink™ system includes protease-deficient host strains and allows both intracellular as well as secreted protein production. In addition, the use of the inducible promoter alcohol oxidase (AOX1) uncouples growth from production of desired proteins, so that cells are not stressed by the accumulation of recombinant protein during growth phase yeast strain 4 (herein referred to as wild-type, WT), a double knockout for proteases prb1, pep4 (to avoid degradation of desired protein), was the background strain in the present inventor's yeast transformations. For secretion of proteins into the media, genes of interest were cloned in frame into the vector pPINK-αHC which contains the Saccharomyces cerevisiae α-mating factor pre-sequence for secreted expression of recombinant proteins. For intracellular production of proteins, the vector pPINK-HC was used. Both vectors contained the ADE2 marker for selection on minimal media lacking adenine (
Expression analysis for introduced transgenes was carried out by RT-PCR. For yeast, 2 mL of a 2-day old culture induced by methanol was centrifuged in a microfuge tube. The pellet was ground in a TissueLyser (QIAGEN Inc, USA). RNA was extracted following the EZNA plant RNA extraction kit (Omega Bio-tek Inc, USA). Up to a microgram of total RNA was used to synthesize cDNA using the superscript III cDNA synthesis kit (Thermo Fisher Scientific, USA). The cDNA was used to check for the expression of transgenes by RT-PCR.
The present inventors used Agrobacterium Ti-plasmid mediated transformation with the plant expression vector pRI201-AN (Takara Bio USA), a binary vector for high-level expression of a foreign gene in dicotyledonous plants carrying the constitutive 35S promoter and an Arabidopsis Alcohol dehydrogenase (AtAdh) as a translational enhancer. 5 mL of LB containing 50 mg/L kanamycin was inoculated with a single colony of Agrobacterium tumefaciens strain GV3101 carrying a binary vector for the expression of the glycosyltransferase 76G1 from Stevia rebaudiana (SEQ ID NO. 61 and SEQ ID NO. 62) and the multi-drug ABC transporter ABCG2 (SEQ ID NO. 67 and SEQ ID NO. 68). The Agrobacterium culture was grown overnight at 180 rpm and 28° C. to an OD600 of 0.6 to 0.8. For transformation, 10 ml of 3-day old BY2 cell cultures was incubated with 500 ul of the Agrobacterium culture and 10p of 100 mM acetosyringone for 48 hours in the dark at room temperature in sterile 50 mL falcon tubes. After 48 hours, the cells were washed twice in Murashige and Skoog medium supplemented with 500 mg/L carbenicillin before plating on selective media (Murashige and Skoog supplemented with 500 mg/L carbenicillin and 50 mg/L kanamycin). Calli were picked at 4 weeks and re-plated for further screening for transgene expression.
All experimental treatments were carried out in triplicates. Data were analyzed using GraphPad Prism software package (http://www.graphpad.com/prism/Prism.htm). Student's t-test and one-way analysis of variance (ANOVA) with Dunnett's Multiple Comparison test for comparing multiple lines with the control were used. All analyses for significant differences were performed at P≤0.05.
Cell suspension cultures were harvested by centrifugation in 15 or 50 mL polypropylene centrifuge tubes. The supernatants were transferred to a new centrifuge tube and both the cell pellet and supernatant was flash frozen in liquid N2. Cell pellets were freeze dried and ˜100 mg of material was extracted by bead milling with 250 uL volume of 0.1 mm zirconia beads in 1 mL of 70% methanol:water (v/v) containing 20 μg/mL of the internal standard 7-hydroxyoumarin (Sigma-Aldrich, H24003). The resulting extracts were clarified by centrifugation at 13,000 rcf for 10 minutes. The clarified supernatant was transferred into a 2 mL autosampler. Supernatants were concentrated by freeze drying 2-fold and spiked at 20 μg/mL of the internal standard 7-hydroxyoumarin final concentration. A 1 mL aliquot was transferred to a 2 mL autosampler.
Mass spectrometry was performed on a quadrupole time-of-flight (QTOF) mass spectrometer (QTOF Ultima, Waters, Manchester, UK) equipped with a Lockspray™ electrospray ion source coupled to a Waters Acquity UPLC system (Waters, Manchester, UK). Mass spectra were collected in the negative electrospray ionization mode (ESI−). The nebulization gas was set to 650 L/h at a temperature of 500° C., the cone gas was set to 15 L/H and the source temperature was set to 110° C. A capillary voltage and cone voltage were set to 2500 and 35 V, respectively. The MCP detector voltage was set to 2200 V. The Q-TOF Ultima MS acquisition rate was set to 0.25 s with a 0.1 s interscan delay. The scan range was from 100 to 1500 m/z. Data was collected in continuum mode. A lockmass solution of 50 ppm raffinose (503.1612 m/z) in 50:50 water:methanol was delivered at 20 μL/min through an auxiliary pump and acquired every 10 s during the MS acquisition. Separations were performed on a Waters BEH C18 column (2.1×50 mm, particle size 1.8 m) using a Waters ACQUITY UPLC System, equipped with an ACQUITY Binary Solvent Manager, and ACQUITY Sample Manager (20 μL sample loop, partial loop injection mode, 5 μL (Cell extracts) or 10 μL (Supernatant) injection volume, 4° C.). Eluents A and B were water and acetonitrile, respectively, both containing 0.1% formic acid. Elution was performed isocratically for 0.1 min at 8% eluent B and then linear gradient 100% eluent B in 6.0 min, and isocratically for 1 min at 100% eluent B. The column was re-equilibrated for 1.5 min. The flow rate was set to 500 μL/min and the column temperature was maintained at 40° C.
Identification of individual cannabinoid analogs was performed, by their corresponding accurate mass shifts by Metabolynx (Waters Corp., Milford, USA). The method parameters for data processing were set as follows: retention time range 0.1-7.5 min, mass range 100-1500 Da, retention time tolerance 0.2 min, mass tolerance 0.05 Da, peak intensity threshold 14. Accurate mass measure of the continuum data was performed using the raffinose lock mass. Raw chromatographic data were additionally processed for extracted ion chromatogram sand peak area integration using Masslynx 4.1 (Waters Corp., Milford, USA). CBGA and CBDA were identified and quantitated using certified reference materials (Cerilliant, Round Rock, TX). All chemical structures and physiochemical and constitutional properties were generated using ChemDoodle version 8.1.0 (IChemLabs™, Chesterfield, VA).
The present inventors identified the cannabinoid bio-transformations associated with the gene constructs expressed in tobacco cell suspension and yeast cultures. Based on the predicted glycosylation reactions and empirical information from the chromatographic assays, we predicted the most likely glycosylation events that would occur to the parent molecules CBGA and CBDA along with their physiochemical and constitutional properties (
The present inventors generated a stock solution of the CBD/CBDA+ glycosides mixture in water which was further diluted 10× in all treatment solutions. A 10 mL starting volume was used for all treatments, and all treatments were prepared in triplicate. The initial molar concentration of each substrate was as follows: CBD: 1.85 μM; CBDA: 5.83 μM; 1×CBDA Gly: 0.40 μM; and 1×CBD O-Acetyl Gly: 0.22 μM. Each sample was incubated at room temperature. Samples were stored in 15 mL polypropylene centrifuge tubes. All samples were shielded from light—tubes were wrapped in aluminum foil. Each sample was prepared in triplicate in the following buffers: water only; pH=3; pH=4; pH=7; pH=8; water only+10 mM ascorbic acid; pH=3+10 mM ascorbic acid; pH=4+10 mM ascorbic acid; pH=7+10 mM ascorbic acid; and pH=8+10 mM ascorbic acid.
Those skilled in the art will appreciate, or be able to ascertain using no more than routine experimentation, further features and advantages of the invention based on the above-described embodiments. Accordingly, the invention is not to be limited by what has been particularly shown and described. All publications and references are herein expressly incorporated by reference in their entirety.
Agrobacterium
Agrobacterium Constructs
Based on the reduced retention time in the HPLC gradient. The glycosylated cannabinoids, which eluted earlier than their non-modified forms, are demonstrated to be more water-soluble than their non-modified forms.
Each of the below clauses is specifically incorporated into the specification of the current application. Each of the below clauses may be amended and presented as a formal claim and further represents an independent invention. It should be noted that for each instance that a preserved clause indicates a glycosylated cannabinoid, and/or an acetylated cannabinoid, such clause should also expressly include and/or a cannabinoid glucuronide or other water-soluble cannabinoid.
The following references are hereby incorporated in their entirety by reference:
As noted above, the instant application contains a full Sequence Listing which has been submitted electronically in ASCII format and is hereby incorporated by reference in its entirety. The following sequences are further provided herewith and are hereby incorporated into the specification in their entirety:
Cannabis sativa
Cannabis sativa
Stevia rebaudiana
Stevia rebaudiana
Cannabis sativa
Cannabis sativa
Arabidopsis thaliana
Arabidopsis thaliana
Escherichia coli
Escherichia coli
Cannabis sativa
Cannabis sativa
Stevia rebaudiana
Stevia rebaudiana
Arabidopsis thaliana
Cannabis sativa
Stevia rebaudiana
Stevia rebaudiana
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Cannabis sativa
Cannabis sativa
Cannabis sativa
Humulus lupulus
Arabidopsis thaliana
Arabidopsis thaliana
Cannabis sativa
Arabidopsis thaliana
Arabidopsis thaliana
MKCSTFSFWFVCKIIFFFFSFNIQTSIAMDPYKYRPASSYNSPFFTTNSGAPVWNNNSSMTVGP
Escherichia coli
Escherichia coli
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Nicotiana tabacum
Stevia rebaudiana
Stevia rebaudiana
Lycium barbarum
Lycium barbarum
Escherichia coli
Escherichia coli
Mus musculus
Mus musculus
Mus musculus
Mus musculus
Mus musculus
Mus musculus
Arabidopsis thaliana
Arabidopsis thaliana
Arabidopsis thaliana
This application is a Continuation of U.S. application Ser. No. 16/425,744, filed May 29, 2019 which is a Continuation-in-Part of U.S. application Ser. No. 16/110,954, filed Aug. 23, 2018; which is a Continuation-in-Part of International Application No. PCT/US18/41710, filed Jul. 11, 2018; which claims the benefit of and priority to U.S. Provisional Application No. 62/531,123, filed Jul. 11, 2017. International Application No. PCT/US18/41710, filed Jul. 11, 2018 is a Continuation-in-Part of International Application No. PCT/US18/24409, filed Mar. 26, 2018; which claims the benefit of and priority to U.S. Provisional Application Nos. 62/588,662, filed Nov. 20, 2017 and 62/621,166, filed Jan. 24, 2018.
| Number | Date | Country | |
|---|---|---|---|
| 62531123 | Jul 2017 | US | |
| 62588662 | Nov 2017 | US | |
| 62621166 | Jan 2018 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 16425744 | May 2019 | US |
| Child | 18364273 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 16110954 | Aug 2018 | US |
| Child | 18364273 | US | |
| Parent | 16110954 | Aug 2018 | US |
| Child | 16425744 | US | |
| Parent | PCT/US18/41710 | Jul 2018 | WO |
| Child | 16110954 | US | |
| Parent | PCT/US18/24409 | Mar 2018 | WO |
| Child | PCT/US18/41710 | US |
