Compositions comprising bacterial strains

Description

SEQUENCE LISTING

The instant application contains a Sequence Listing which has been submitted electronically in ASCII format and is hereby incorporated by reference in its entirety. Said ASCII copy, created on Jan. 24, 2017, is named 49455_711_301_P067605XX_sequence_listing.txt and is 1,261,810 bytes in size.

TECHNICAL FIELD

This invention is in the field of compositions comprising bacterial strains isolated from the mammalian digestive tract and the use of such compositions in the treatment of disease.

BACKGROUND TO THE INVENTION

The human intestine is thought to be sterile in utero, but it is exposed to a large variety of maternal and environmental microbes immediately after birth. Thereafter, a dynamic period of microbial colonization and succession occurs, which is influenced by factors such as delivery mode, environment, diet and host genotype, all of which impact upon the composition of the gut microbiota, particularly during early life. Subsequently, the microbiota stabilizes and becomes adult-like [1]. The human gut microbiota contains more than 500-1000 different phylotypes belonging essentially to two major bacterial divisions, the Bacteroidetes and the Firmicutes [2]. The successful symbiotic relationships arising from bacterial colonization of the human gut have yielded a wide variety of metabolic, structural, protective and other beneficial functions. The enhanced metabolic activities of the colonized gut ensure that otherwise indigestible dietary components are degraded with release of by-products providing an important nutrient source for the host. Similarly, the immunological importance of the gut microbiota is well-recognized and is exemplified in germfree animals which have an impaired immune system that is functionally reconstituted following the introduction of commensal bacteria [3-5].

Dramatic changes in microbiota composition have been documented in gastrointestinal disorders such as inflammatory bowel disease (IBD). For example, the levels of Clostridium cluster XIVa bacteria are reduced in subjects with IBD whilst numbers of E. coli are increased, suggesting a shift in the balance of symbionts and pathobionts within the gut [6-9]. Interestingly, this microbial dysbiosis is also associated with imbalances in T effector cell populations.

In recognition of the potential positive effect that certain bacterial strains may have on the animal gut, various strains have been proposed for use in the treatment of various diseases (see, for example, [10-13]). Also, certain strains, including mostly Lactobacillus and Bifidobacterium strains, have been proposed for use in treating various inflammatory and autoimmune diseases that are not directly linked to the intestines (see [14] and [15] for reviews). However, the relationship between different diseases and different bacterial strains, and the precise effects of particular bacterial strains on the gut and at a systemic level and on any particular types of diseases, are poorly characterized.

Seres Health, Inc. (see [16]) speculates that bacteria obtained from faecal samples may be useful for treating immune system disorders but no guidance are provided as to which bacteria would be effective.

Honda et al. (see [17]) describes how a mixture of 20 bacteria of different genera, including species from the Clostridium genus, induce the proliferation and accumulation of Th17 cells. Honda et al.'s compositions are said to be useful for improving immune functions and preventing or treating infectious diseases. However, Honda et al. teaches that in order to treat autoimmune and inflammatory disease in an individual, the Th17-inducing bacteria should be inhibited or killed, for example, by administering an antibiotic to the subject.

There is a requirement in the art for new methods of treating inflammatory and autoimmune diseases. There is also a requirement for the potential effects of gut bacteria to be characterized so that new therapies using gut bacteria can be developed.

SUMMARY OF THE INVENTION

The inventors have developed new therapies for treating and preventing inflammatory and autoimmune diseases. In particular, the inventors have developed new therapies for treating and preventing diseases and conditions mediated by IL-17 or the Th17 pathway. In particular, the inventors have identified that bacterial strains from the genus Erysipelatoclostridium can be effective for treating and preventing diseases and conditions mediated by IL-17 or the Th17 pathway. As described in the examples, oral administration of compositions comprising Erysipelatoclostridium ramosum may reduce the severity of the inflammatory response, including the Th17 inflammatory response, in mouse models of uveitis.

Therefore, in a first embodiment, the invention provides a composition comprising a bacterial strain of the genus Erysipelatoclostridium, for use in a method of treating or preventing a disease or condition mediated by IL-17 or the Th17 pathway. The inventors have identified that treatment with bacterial strains from this species can provide clinical benefits in mouse models of inflammatory and autoimmune diseases mediated by IL-17 and the Th17 pathway, may reduce levels of cytokines that are part of the Th17 pathway, including IL-17, and may alleviate the Th17 inflammatory response.

In particular embodiments, the invention provides a composition comprising a bacterial strain of the genus Erysipelatoclostridium, for use in a method of treating or preventing a disease or condition selected from the group consisting of: uveitis; cancer, such as breast cancer, lung cancer, liver cancer, colon cancer, or ovarian cancer; multiple sclerosis; arthritis, such as rheumatoid arthritis, osteoarthritis, psoriatic arthritis, or juvenile idiopathic arthritis; neuromyelitis optica (Devic's disease); ankylosing spondylitis; spondyloarthritis; psoriasis; systemic lupus erythematosus; inflammatory bowel disease, such as Crohn's disease or ulcerative colitis; celiac disease; asthma, such as allergic asthma or neutrophilic asthma; chronic obstructive pulmonary disease (COPD); scleritis; vasculitis; Behcet's disease; atherosclerosis; atopic dermatitis; emphysema; periodontitis; allergic rhinitis; and allograft rejection. The effect shown for the bacterial strains from the genus Erysipelatoclostridium on the Th17 inflammatory response and on diseases mediated by IL-17 and the Th17 pathway may provide therapeutic benefits for other diseases and conditions mediated by IL-17 and the Th17 pathway, such as those listed above.

In particularly preferred embodiments, the invention provides a composition comprising a bacterial strain of the genus Erysipelatoclostridium, for use in a method of treating or preventing uveitis, such as posterior uveitis. The inventors have identified that treatment with Erysipelatoclostridium strains can reduce disease incidence and disease severity in a mouse model of uveitis and can prevent or reduce retinal damage. In preferred embodiments, the invention provides a composition comprising a bacterial strain of the species Erysipelatoclostridium ramosum, for use in the treatment of uveitis. Compositions using Erysipelatoclostridium ramosum may be particularly effective for treating uveitis.

In further preferred embodiments, the invention provides a composition comprising a bacterial strain of the genus Erysipelatoclostridium, for use in a method of treating or preventing asthma, such as neutrophilic asthma or allergic asthma. Treatment with Erysipelatoclostridium strains may reduce recruitment of neutrophils and eosinophils into the lungs, which can help treat or prevent asthma. In certain embodiments, the composition is for use in a method of treating or preventing neutrophilic asthma or eosinophilic asthma. The compositions of the invention may be particularly effective for treating or preventing neutrophilic asthma and eosinophilic asthma. Indeed, in certain embodiments, the composition is for use in a method of reducing a neutrophilic inflammatory response in the treatment or prevention of asthma, or the composition is for use in a method of reducing an eosinophilic inflammatory response in the treatment or prevention of asthma. In preferred embodiments, the invention provides a composition comprising a bacterial strain of the species Erysipelatoclostridium ramosum for use in the treatment of asthma, and in particular eosinophilic or allergic asthma. Also, Erysipelatoclostridium ramosum may have a particularly pronounced effect on neutrophils in asthma models and treatment with Erysipelatoclostridium ramosum may be particularly effective for treating neutrophilic asthma.

In further preferred embodiments, the invention provides a composition comprising a bacterial strain of the genus Erysipelatoclostridium, for use in a method of treating or preventing rheumatoid arthritis. Treatment with Erysipelatoclostridium strains may provide clinical benefits in a mouse model of rheumatoid arthritis and reduce joint swelling. In preferred embodiments, the invention provides a composition comprising a bacterial strain of the species Erysipelatoclostridium ramosum, for use in the treatment of rheumatoid arthritis. Compositions using Erysipelatoclostridium ramosum may be particularly effective for treating rheumatoid arthritis.

In further preferred embodiments, the invention provides a composition comprising a bacterial strain of the genus Erysipelatoclostridium, for use in a method of treating or preventing multiple sclerosis. Treatment with Erysipelatoclostridium strains may reduce disease incidence and disease severity in a mouse model of multiple sclerosis. In preferred embodiments, the invention provides a composition comprising a bacterial strain of the species Erysipelatoclostridium ramosum, for use in the treatment of multiple sclerosis. Compositions using Erysipelatoclostridium ramosum may be particularly effective for treating multiple sclerosis.

In further preferred embodiments, the invention provides a composition comprising a bacterial strain of the genus Erysipelatoclostridium, for use in a method of treating or preventing cancer, such as breast, lung or liver cancer. Compositions comprising a bacterial strain of the genus Erysipelatoclostridium may reduce tumor growth in mouse models of breast, lung and liver cancer. In certain embodiments, the composition is for use in a method of reducing tumor size or preventing tumor growth in the treatment of cancer. In certain embodiments, the invention provides a composition comprising a bacterial strain of the species Erysipelatoclostridium ramosum, for use in the treatment of cancer.

In certain embodiments, the composition is for use in a subject with elevated IL-17 levels or Th17 cells. The effect shown for Erysipelatoclostridium strains on uveitis, which is strongly associated with the Th17 inflammatory response, means that Erysipelatoclostridium strains may be particularly beneficial for such subjects.

In preferred embodiments of the invention, the bacterial strain in the composition is of Erysipelatoclostridium ramosum. Closely related strains may also be used, such as bacterial strains that have a 16s rRNA sequence that is at least 95%, 96%, 97%, 98%, 99%, 99.5% or 99.9% identical to the 16s rRNA sequence of a bacterial strain of Erysipelatoclostridium ramosum. Preferably, the bacterial strain has a 16s rRNA sequence that is at least 95%, 96%, 97%, 98%, 99%, 99.5% or 99.9% identical to SEQ ID NO:1, 2 or 3. Preferably, the sequence identity is to SEQ ID NO:3. Preferably, the bacterial strain for use in the invention has the 16s rRNA sequence represented by SEQ ID NO:3.

In certain embodiments, the composition can comprise a Erysipelatoclostridium species such as Erysipelatoclostridium ramosum, (Clostridium) cocleatum, (C.) saccharogumia, (C.) spiroforme, or (C.) innocuum.

In certain embodiments, the composition of the invention is for oral administration. Oral administration of the strains of the invention can be effective for treating IL-17- or Th17 pathway-mediated diseases and conditions. Also, oral administration is convenient for patients and practitioners and allows delivery to and/or at least partial or total colonization of the intestine.

In certain embodiments, the composition of the invention comprises one or more pharmaceutically acceptable excipients, diluents, or carriers.

In certain embodiments, the composition of the invention comprises a bacterial strain that has been lyophilized. Lyophilization is an effective and convenient technique for preparing stable compositions that allow delivery of bacteria.

In certain embodiments, the composition comprises a bacterial strain that has been lyophilized; and further comprises a pharmaceutically acceptable excipient, diluent, or carrier.

In certain embodiments, the composition comprises a lyoprotectant, which can be a pharmaceutically acceptable excipient, diluent, or carrier.

In certain embodiments, the composition is a lyophilized composition which can be reconstituted prior to administration to a subject.

In certain embodiments, the invention provides a food product comprising the composition as described above.

In certain embodiments, the invention provides a vaccine composition comprising the composition as described above.

Additionally, the invention provides a method of treating or preventing a disease or condition mediated by IL-17 or the Th17 pathway, comprising administering a composition comprising a bacterial strain of the genus Erysipelatoclostridium.

In developing the above invention, the inventors have identified and characterized a bacterial strain that is particularly useful for therapy. The Erysipelatoclostridium ramosum strain of the invention is shown to be effective for treating the diseases described herein, such as uveitis. Therefore, in another aspect, the invention provides a cell of the Erysipelatoclostridium ramosum strain MRX027 (in particular MRX027 deposited as NCIMB 42688), or a derivative thereof. The invention also provides compositions comprising such cells, or biologically pure cultures of such cells. The invention also provides a cell of Erysipelatoclostridium ramosum strain MRX027 (in particular MRX027 deposited as NCIMB 42688), or a derivative thereof, for use in therapy, in particular for the diseases described herein.

INCORPORATION BY REFERENCE

All publications, patents, and patent applications mentioned in this specification are herein incorporated by reference in their entirety for all purposes, to the same extent as if each individual publication, patent, or patent application was specifically and individually indicated to be incorporated by reference.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1: Mouse model of uveitis—TEFI Scores in the control group. Data are presented as Mean±SEM.

FIG. 2: Mouse model of uveitis—TEFI Scores on Day 28. Data are presented as Mean±SEM.

DETAILED DESCRIPTION

Bacterial Strains

The compositions of the invention comprise a bacterial strain of the genus Erysipelatoclostridium. The examples demonstrate that bacteria of this genus are useful for treating or preventing uveitis and diseases and conditions mediated by IL-17 or the Th17 pathway. The preferred bacterial strains are of the species Erysipelatoclostridium ramosum.

The invention provides an Erysipelatoclostridium, for example, an Erysipelatoclostridium ramosum for use in therapy, for example, for use in treating or preventing an inflammatory and/or autoimmune disease. Similarly, the invention provides a composition comprising a bacterial strain of the genus Erysipelatoclostridium, for example, an Erysipelatoclostridium ramosum, for use in therapy, for example, for use in treating or preventing an inflammatory and/or autoimmune disease. In certain embodiments, the compositions of the invention comprise Erysipelatoclostridium, for example, an Erysipelatoclostridium ramosum, and do not contain any other bacterial genus. In certain embodiments, the compositions of the invention comprise a single species of Erysipelatoclostridium, for example, an Erysipelatoclostridium ramosum, and do not contain any other bacterial species. In certain embodiments, the compositions of the invention comprise a single strain of Erysipelatoclostridium, for example, of Erysipelatoclostridium ramosum, and do not contain any other bacterial strains or species.

Examples of Erysipelatoclostridium species for use in the invention include Erysipelatoclostridium ramosum, (Clostridium) cocleatum, (C.) saccharogumia, (C.) spiroforme, and (C.) innocuum (recently reclassified in [18]). Erysipelatoclostridium are gram-positively staining, non-motile, obligately anaerobic straight or helically curved rods of 0.3-1.0 μm×2-4 μm. Spore formation is rare or absent. Accordingly, in some embodiments of the invention, the Erysipelatoclostridium bacterial strain is not in sporulated form or if any spores are present they are present in a de minimis amount. The G+C content of the genomic DNA is 27-33 mol %. They ferment glucose, fructose and sucrose [18]. The type strain of Erysipelatoclostridium ramosum is ATCC 25582=DSM 1402. The GenBank accession number for the 16S rRNA gene sequence of Erysipelatoclostridium ramosum strain DSM 1402 is X73440 (disclosed herein as SEQ ID NO:1). Exemplary Erysipelatoclostridium ramosum strains are described in [18]. Another strain for use in the invention is Erysipelatoclostridium ramosum strain JCM 1298. The GenBank accession number for the 16S rRNA gene sequence of Erysipelatoclostridium ramosum strain JCM 1298 is NR_113243.1 (disclosed herein as SEQ ID NO:2).

All microorganism deposits were made under the terms of the Budapest Treaty. Maintenance of a viable culture is assured for 30 years from the date of deposit. All restrictions on the availability to the public of the deposited microorganisms will be irrevocably removed upon the granting of a patent for this application. The Erysipelatoclostridium ramosum bacterium tested in the Examples is referred to herein as strain MRX027. A 16S rRNA sequence for the MRX027 strain that was tested is provided in SEQ ID NO:3. Strain MRX027 was deposited with the international depositary authority NCIMB, Ltd. (Ferguson Building, Aberdeen, AB21 9YA, Scotland) by 4D Pharma Research Ltd. (Life Sciences Innovation Building, Aberdeen, AB25 2ZS, Scotland) on 15 Nov. 2016 and was assigned accession number NCIMB 42688. The terms “MRX027” and “MRx0027” are used interchangeably herein.

Bacterial strains closely related to the strain tested in the examples are also expected to be effective for treating or preventing uveitis and diseases and conditions mediated by IL-17 or the Th17 pathway. In certain embodiments, the bacterial strain for use in the invention has a 16s rRNA sequence that is at least 95%, 96%, 97%, 98%, 99%, 99.5% or 99.9% identical to the 16s rRNA sequence of a bacterial strain of Erysipelatoclostridium ramosum. Preferably, the bacterial strain for use in the invention has a 16s rRNA sequence that is at least 95%, 96%, 97%, 98%, 99%, 99.5% or 99.9% identical to SEQ ID NO:1, 2 or 3. Preferably, the sequence identity is to SEQ ID NO:3. Preferably, the bacterial strain for use in the invention has the 16s rRNA sequence represented by SEQ ID NO:3.

Bacterial strains that are biotypes of strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 and JCM 1298 are also expected to be effective for treating or preventing uveitis and diseases and conditions mediated by IL-17 or the Th17 pathway. A biotype is a closely related strain that has the same or very similar physiological and biochemical characteristics.

Strains that are biotypes of strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298 and that are suitable for use in the invention may be identified by sequencing other nucleotide sequences for strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298. For example, substantially the whole genome may be sequenced and a biotype strain for use in the invention may have at least 95%, 96%, 97%, 98%, 99%, 99.5% or 99.9% sequence identity across at least 80% of its whole genome (e.g. across at least 85%, 90%, 95% or 99%, or across its whole genome). For example, in some embodiments, a biotype strain has at least 98% sequence identity across at least 98% of its genome or at least 99% sequence identity across 99% of its genome. Other suitable sequences for use in identifying biotype strains may include hsp60 or repetitive sequences such as BOX, ERIC, (GTG)₅, or REP or [19]. Biotype strains may have sequences with at least 95%, 96%, 97%, 98%, 99%, 99.5% or 99.9% sequence identity to the corresponding sequence of strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298. In some embodiments, a biotype strain has a sequence with at least 95%, 96%, 97%, 98%, 99%, 99.5% or 99.9% sequence identity to the corresponding sequence of strain MRX027 deposited as NCIMB 42688 and comprises a 16S rRNA sequence that is at least 99% identical (e.g. at least 99.5% or at least 99.9% identical) to SEQ ID NO:3. In some embodiments, a biotype strain has a sequence with at least 95%, 96%, 97%, 98%, 99%, 99.5% or 99.9% sequence identity to the corresponding sequence of strain MRX027 deposited as NCIMB 42688 and has the 16S rRNA sequence of SEQ ID NO:3.

Alternatively, strains that are biotypes of strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298 and that are suitable for use in the invention may be identified by using strain strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298 and restriction fragment analysis and/or PCR analysis, for example by using fluorescent amplified fragment length polymorphism (FAFLP) and repetitive DNA element (rep)-PCR fingerprinting, or protein profiling, or partial 16S or 23s rDNA sequencing. In preferred embodiments, such techniques may be used to identify other Erysipelatoclostridium ramosum strains.

In certain embodiments, strains that are biotypes of strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298 and that are suitable for use in the invention are strains that provide the same pattern as strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298 when analyzed by amplified ribosomal DNA restriction analysis (ARDRA), for example when using Sau3AI restriction enzyme (for exemplary methods and guidance see, for example, [20]). Alternatively, biotype strains are identified as strains that have the same carbohydrate fermentation patterns as strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298.

Other Erysipelatoclostridium ramosum strains that are useful in the compositions and methods of the invention, such as biotypes of strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298, may be identified using any appropriate method or strategy, including the assays described in the examples. For instance, strains for use in the invention may be identified by culturing in anaerobic YCFA and/or administering the bacteria to the type II collagen-induced arthritis mouse model and then assessing cytokine levels. In particular, bacterial strains that have similar growth patterns, metabolic type and/or surface antigens to strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298 may be useful in the invention. A useful strain will have comparable immune modulatory activity to strains MRX027 (in particular MRX027 deposited as NCIMB 42688), ATCC 25582 or JCM 1298. In particular, a biotype strain will elicit comparable effects on the uveitis disease models to the effects shown in the Examples, which may be identified by using the culturing and administration protocols described in the Examples.

A particularly preferred strain of the invention is strain MRX027 strain (in particular MRX027 deposited as NCIMB 42688). This is the exemplary strain tested in the examples and shown to be effective for treating disease. Therefore, the invention provides a cell, such as an isolated cell, of Erysipelatoclostridium ramosum strain MRX027 (in particular MRX027 deposited as NCIMB 42688), or a derivative thereof. The invention also provides a composition comprising a cell of Erysipelatoclostridium ramosum strain MRX027 (in particular MRX027 deposited as NCIMB 42688), or a derivative thereof. The invention also provides a biologically pure culture of Erysipelatoclostridium ramosum strain MRX027 (in particular MRX027 deposited as NCIMB 42688). The invention also provides a cell of Erysipelatoclostridium ramosum strain MRX027 (in particular MRX027 deposited as NCIMB 42688), or a derivative thereof, for use in therapy, in particular for the diseases described herein. A derivative of Erysipelatoclostridium ramosum strain MRX027 (in particular MRX027 deposited as NCIMB 42688) may be a daughter strain (progeny) or a strain cultured (subcloned) from the original.

A derivative of a strain of the invention may be modified, for example at the genetic level, without ablating the biological activity. In particular, a derivative strain of the invention is therapeutically active. A derivative strain will have comparable immune modulatory activity to the Erysipelatoclostridium ramosum strain MRX027 (in particular MRX027 deposited as NCIMB 42688). In particular, a derivative strain will elicit comparable effects on the uveitis disease models to the effects shown in the Examples, which may be identified by using the culturing and administration protocols described in the Examples. A derivative of strain MRX027 (in particular MRX027 deposited as NCIMB 42688) will generally be a biotype of strain MRX027 (in particular MRX027 deposited as NCIMB 42688).

References to cells of Erysipelatoclostridium ramosum strain MRX027 encompass any cells that have the same safety and therapeutic efficacy characteristics as strain MRX027, and such cells are encompassed by the invention. Reference to MRX027 deposited as NCIMB 42688 refers to the deposited MRX027 strain only.

The genome sequence of Erysipelatoclostridium ramosum strain DSM 1402 is disclosed herein as SEQ ID NO:4. This sequence is a genomic scaffold obtained using whole genome shotgun sequencing and is also available using GenBank accession number NZ_DS499659.1. In certain embodiments, the bacterial strain for use in the invention has a chromosome with sequence identity to SEQ ID NO:4. In some embodiments, the bacterial strain for use in the invention has a chromosome with at least 90% sequence identity (e.g. at least 92%, 94%, 95%, 96%, 97%, 98%, 99% or 100% sequence identity) to SEQ ID NO:4 across at least 30% (e.g. across at least 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 95%, 96%, 97%, 98%, 99% or 100%) of SEQ ID NO:4. For example, the bacterial strain for use in the invention may have a chromosome with at least 95% sequence identity to SEQ ID NO:4 across 35% of SEQ ID NO:4, or at least 95% sequence identity to SEQ ID NO:4 across 45% of SEQ ID NO:4, or at least 90% sequence identity to SEQ ID NO:4 across 70% of SEQ ID NO:4, or at least 90% sequence identity to SEQ ID NO:4 across 80% of SEQ ID NO:4, or at least 90% sequence identity to SEQ ID NO:4 across 90% of SEQ ID NO:4, or at least 90% sequence identity to SEQ ID NO:4 across 100% of SEQ ID NO:4, or at least 95% sequence identity to SEQ ID NO:4 across 70% of SEQ ID NO:4, or at least 95% sequence identity to SEQ ID NO:4 across 80% of SEQ ID NO:4, or at least 95% sequence identity to SEQ ID NO:4 across 90% of SEQ ID NO:4, or at least 95% sequence identity to SEQ ID NO:4 across 100% of SEQ ID NO:4, or at least 98% sequence identity to SEQ ID NO:4 across 70% of SEQ ID NO:4, or at least 98% sequence identity to SEQ ID NO:4 across 80% of SEQ ID NO:4, or at least 98% sequence identity to SEQ ID NO:4 across 90% of SEQ ID NO:4, or at least 98% identity across 95% of SEQ ID NO:4, or at least 98% sequence identity to SEQ ID NO:4 across 100% of SEQ ID NO:4, or at least 99.5% sequence identity to SEQ ID NO:4 across 90% of SEQ ID NO:4, or at least 99.5% identity across 95% of SEQ ID NO:4, or at least 99.5% identity across 98% of SEQ ID NO:4, or at least 99.5% sequence identity to SEQ ID NO:4 across 100% of SEQ ID NO:4.

In certain embodiments, the bacterial strain for use in the invention has a chromosome with sequence identity to SEQ ID NO:4 in the region flanking the 16S rRNA sequence. In some embodiments, the bacterial strain for use in the invention has a chromosome with at least 95% (e.g. at least 96%, 97%, 98%, 99%, 99.5% or 100%) sequence identity to the 0.5 kb sequence directly upstream and/or downstream of the 16S rRNA sequence in SEQ ID NO:4. In some embodiments, the bacterial strain for use in the invention has a chromosome with at least 95% (e.g. at least 96%, 97%, 98%, 99%, 99.5% or 100%) sequence identity to the 1 kb sequence directly upstream and/or downstream of the 16S rRNA sequence in SEQ ID NO:4. In some embodiments, the bacterial strain for use in the invention has a chromosome with at least 95% (e.g. at least 96%, 97%, 98%, 99%, 99.5% or 100%) sequence identity to the 1.5 kb sequence directly upstream and/or downstream of the 16S rRNA sequence in SEQ ID NO:4. In some embodiments, the bacterial strain for use in the invention has a chromosome with at least 95% (e.g. at least 96%, 97%, 98%, 99%, 99.5% or 100%) sequence identity to the 2 kb sequence directly upstream and/or downstream of the 16S rRNA sequence in SEQ ID NO:4.

In certain embodiments, the bacterial strain for use in the invention has a chromosome with sequence identity to SEQ ID NO:4, for example as described above, and a 16S rRNA sequence with sequence identity to any of SEQ ID NO:1, 2 or 3, for example as described above, preferably with a 16s rRNA sequence that is at least 99% identical to SEQ ID NO: 3, more preferably which comprises the 16S rRNA sequence of SEQ ID NO:3.

In certain embodiments, the bacterial strain for use in the invention has a chromosome with sequence identity to SEQ ID NO:4, for example as described above, and is effective for treating or preventing diseases and conditions mediated by IL-17 or the Th17 pathway.

In certain embodiments, the bacterial strain for use in the invention has a chromosome with sequence identity to SEQ ID NO:4, for example as described above, and a 16S rRNA sequence with sequence identity to any of SEQ ID NOs: 1, 2 or 3, for example as described above, and is effective for treating or preventing diseases and conditions mediated by IL-17 or the Th17 pathway.

In certain embodiments, the bacterial strain for use in the invention has a 16s rRNA sequence that is at least 99%, 99.5% or 99.9% identical to the 16s rRNA sequence represented by SEQ ID NO: 3 (for example, which comprises the 16S rRNA sequence of SEQ ID NO:3) and a chromosome with at least 95% sequence identity to SEQ ID NO:4 across at least 40% of SEQ ID NO:4, and which is effective for treating or preventing diseases and conditions mediated by IL-17 or the Th17 pathway.

In certain embodiments, the bacterial strain for use in the invention has a 16s rRNA sequence that is at least 99%, 99.5% or 99.9% identical to the 16s rRNA sequence represented by SEQ ID NO: 3 (for example, which comprises the 16S rRNA sequence of SEQ ID NO:3) and a chromosome with at least 95% sequence identity to SEQ ID NO:4 across at least 90% of SEQ ID NO:4, and which is effective for treating or preventing diseases and conditions mediated by IL-17 or the Th17 pathway.

In certain embodiments, the bacterial strain for use in the invention is a Erysipelatoclostridium ramosum and has a 16s rRNA sequence that is at least 99%, 99.5% or 99.9% identical to the 16s rRNA sequence represented by SEQ ID NO: 3 (for example, which comprises the 16S rRNA sequence of SEQ ID NO:3) and a chromosome with at least 98% sequence identity (e.g. at least 99% or at least 99.5% sequence identity) to SEQ ID NO:4 across at least 98% (e.g. across at least 99% or at least 99.5%) of SEQ ID NO:4, and which is effective for treating or preventing diseases and conditions mediated by IL-17 or the Th17 pathway.

In preferred embodiments, the bacterial strains in the compositions of the invention are viable and capable of at least partially or totally colonizing the intestine.

Therapeutic Uses

As demonstrated in the examples, the bacterial compositions of the invention are effective for reducing the Th17 inflammatory response. In particular, treatment with compositions of the invention achieves clinical improvements in animal models of conditions mediated by IL-17 and the Th17 pathway and may achieve a reduction in IL-17A levels and other Th17 pathway cytokines. Therefore, the compositions of the invention may be useful for treating or preventing inflammatory and autoimmune diseases, and in particular diseases or conditions mediated by IL-17. In particular, the compositions of the invention may be useful for reducing or preventing elevation of the IL-17 inflammatory response.

Th17 cells are a subset of T helper cells that produce, for example, IL-17A, IL17-F, IL-21 and IL-22. Th17 cell differentiation and IL-17 expression may be driven by IL-23. These cytokines and others form important parts of the Th17 pathway, which is a well-established inflammatory signaling pathway that contributes to and underlies a number of inflammatory and autoimmune diseases (as described in, for example, [21-26]). Diseases wherein the Th17 pathway is activated are Th17 pathway-mediated diseases. Th17 pathway-mediated diseases can be ameliorated or alleviated by repressing the Th17 pathway, which may be through a reduction in the differentiation of Th17 cells or a reduction in their activity or a reduction in the level of Th17 pathway cytokines. Diseases mediated by the Th17 pathway may be characterized by increased levels of cytokines produced by Th17 cells, such as IL-17A, IL-17F, IL-21, IL-22, IL-26, IL-9 (reviewed in [27]). Diseases mediated by the Th17 pathway may be characterized by increased expression of Th-17-related genes, such as Stat3 or IL-23R. Diseases mediated by the Th17 pathway may be associated with increased levels of Th17 cells.

IL-17 is a pro-inflammatory cytokine that contributes to the pathogenesis of several inflammatory and autoimmune diseases and conditions. IL-17 as used herein may refer to any member of the IL-17 family, including IL-17A, IL-17B, IL-17C, IL-17D, IL-17E, and IL-17F. IL-17-mediated diseases and conditions are characterized by high expression of IL-17 and/or the accumulation or presence of IL-17-positive cells in a tissue affected by the disease or condition. Similarly, IL-17-mediated diseases and conditions are diseases and conditions that are exacerbated by high IL-17 levels or an increase in IL-17 levels, and that are alleviated by low IL-17 levels or a reduction in IL-17 levels. The IL-17 inflammatory response may be local or systemic.

Examples of diseases and conditions that may be mediated by IL-17 or the Th17 pathway include uveitis; cancer, such as breast cancer, lung cancer, liver cancer, colon cancer, or ovarian cancer; multiple sclerosis; arthritis, such as rheumatoid arthritis, osteoarthritis, psoriatic arthritis, or juvenile idiopathic arthritis; neuromyelitis optica (Devic's disease); ankylosing spondylitis; spondyloarthritis; psoriasis; systemic lupus erythematosus; inflammatory bowel disease, such as Crohn's disease or ulcerative colitis; celiac disease; asthma, such as allergic asthma or neutrophilic asthma; chronic obstructive pulmonary disease (COPD); scleritis; vasculitis; Behcet's disease; atherosclerosis; atopic dermatitis; emphysema; periodontitis; allergic rhinitis; and allograft rejection. In preferred embodiments, the compositions of the invention are used for treating or preventing one or more of these conditions or diseases. In further preferred embodiments, these conditions or diseases are mediated by IL-17 or the Th17 pathway.

In some embodiments, the pathogenesis of the disease or condition affects the intestine. In some embodiments, the pathogenesis of the disease or condition does not affect the intestine. In some embodiments, the pathogenesis of the disease or condition is not localized at the intestine. In some embodiments, the treating or preventing occurs at a site other than at the intestine. In some embodiments, the treating or preventing occurs at the intestine and also at a site other than at the intestine. In certain embodiments, the disease or condition is systemic.

In certain embodiments, the compositions of the invention are for use in a method of reducing IL-17 production or reducing Th17 cell differentiation in the treatment or prevention of a disease or condition mediated by IL-17 or the Th17 pathway. In certain embodiments, the compositions of the invention are for use in treating or preventing an inflammatory or autoimmune disease, wherein said treatment or prevention is achieved by reducing or preventing elevation of the Th17 inflammatory response. In certain embodiments, the compositions of the invention are for use in treating a subject with an inflammatory or autoimmune disease, wherein the subject has elevated IL-17 levels or elevated Th17 cells or is exhibiting a Th17 inflammatory response. In certain embodiments, the subject may have been diagnosed with a chronic inflammatory or autoimmune disease or condition, or the composition of the invention may be for use in preventing an inflammatory or autoimmune disease or condition developing into a chronic inflammatory or autoimmune disease or condition. In certain embodiments, the disease or condition may not be responsive to treatment with TNF-α inhibitors. These uses of the invention may be applied to any of the specific disease or conditions listed in the preceding paragraph.

IL-17 and the Th17 pathway are often associated with chronic inflammatory and autoimmune diseases, so the compositions of the invention may be particularly useful for treating or preventing chronic diseases or conditions as listed above. In certain embodiments, the compositions are for use in subjects with chronic disease. In certain embodiments, the compositions are for use in preventing the development of chronic disease.

The compositions of the invention may be useful for treating diseases and conditions mediated by IL-17 or the Th17 pathway and for addressing the Th17 inflammatory response, so the compositions of the invention may be particularly useful for treating or preventing chronic disease, treating or preventing disease in subjects that have not responded to other therapies (such as treatment with TNF-α inhibitors), and/or treating or preventing the tissue damage and symptoms associated with IL-17 and Th17 cells. For example, IL-17 is known to activate matrix destruction in cartilage and bone tissue and IL-17 has an inhibitory effect on matrix production in chondrocytes and osteoblasts, so the compositions of the invention may be useful for treating or preventing bone erosion or cartilage damage.

In certain embodiments, treatment with compositions of the invention provides a reduction or prevents an elevation in IL-17 levels, in particular IL-17A levels. In certain embodiments, treatment with compositions of the invention provides a reduction or prevents an elevation in TNFα, IFN-γ or IL-6 levels. Such reduction or prevention of elevated levels of these cytokines may be useful for treating or preventing inflammatory and autoimmune diseases and conditions, in particular those mediated by IL-17 or the Th17 pathway.

Uveitis

In preferred embodiments, the compositions of the invention are for use in treating or preventing uveitis. The examples demonstrate that the compositions of the invention achieve a reduction in disease incidence and disease severity in an animal model of uveitis and so they may be useful in the treatment or prevention of uveitis. Uveitis is inflammation of the uvea and can result in retinal tissue destruction. It can present in different anatomical forms (anterior, intermediate, posterior or diffuse) and result from different, but related, causes, including systemic autoimmune disorders. IL-17 and the Th17 pathway are centrally involved in uveitis, so the efficacy of the compositions of the invention for treating uveitis indicates that the compositions of the invention may be particularly effective for treating and preventing diseases and conditions mediated by IL-17 or the Th17 pathway. References [28-35] describe elevated serum levels of interleukin-17A in subjects with uveitis, specific association of IL17A genetic variants with panuveitis, the role of Th17-associated cytokines in the pathogenesis of experimental autoimmune uveitis, the imbalance between Th17 Cells and regulatory T Cells during monophasic experimental autoimmune uveitis, the up-regulation of IL-17A in subjects with uveitis and active Adamantiades-Behçet and Vogt-Koyanagi-Harada (VKH) diseases, the treatment of non-infectious uveitis with secukinumab (anti-IL-17A antibody), and Th17 in uveitic eyes.

In certain embodiments, the uveitis is posterior uveitis. Posterior uveitis presents primarily with inflammation of the retina and choroid and the examples demonstrate that the compositions of the invention are effective for reducing retinal inflammation and damage.

In certain embodiments, treatment with the compositions of the invention results in a reduction in retinal damage. In certain embodiments, the compositions of the invention are for use in reducing or preventing retinal damage in the treatment of uveitis. In certain embodiments, the compositions are for use in treating subjects with severe uveitis that are at risk of retinal damage. In certain embodiments, treatment with the compositions of the invention results in a reduction in optic disc inflammation. In certain embodiments, the compositions of the invention are for use in reducing or preventing optic disc inflammation. In certain embodiments, treatment with the compositions of the invention results in a reduction in retinal tissue infiltration by inflammatory cells. In certain embodiments, the compositions of the invention are for use in reducing retinal tissue infiltration by inflammatory cells. In certain embodiments, treatment with the compositions of the invention results in vision being maintained or improved. In certain embodiments, the compositions of the invention are for use in maintaining or improving vision.

In certain embodiments, the compositions are for use in treating or preventing uveitis associated with a non-infectious or autoimmune disease, such as Behçet disease, Crohn's disease, Fuchs heterochromic iridocyclitis, granulomatosis with polyangiitis, HLA-B27 related uveitis, juvenile idiopathic arthritis, sarcoidosis, spondyloarthritis, sympathetic ophthalmia, tubulointerstitial nephritis and uveitis syndrome or Vogt-Koyanagi-Harada syndrome. IL-17A has been shown to be involved in, for example, Behçet and Vogt-Koyanagi-Harada diseases. Treatment or prevention of uveitis may refer to, for example, an alleviation of the severity of symptoms or a prevention of relapse.

Cancer

In preferred embodiments, the compositions of the invention are for use in treating or preventing cancer. IL-17 and the Th17 pathway have central roles in cancer development and progression, and so the compositions of the invention may be useful for treating or preventing cancer.

Although the roles of IL-17 and Th17 cells in cancer are not fully understood, numerous pro-tumor effects of IL-17 and Th17 cells are known. For example, Th17 cells and IL-17 can promote angiogenesis, increase proliferation and survival of tumor cells and activate tumor-promoting transcription factors [36-38].

In certain embodiments, treatment with the compositions of the invention results in a reduction in tumor size or a reduction in tumor growth. In certain embodiments, the compositions of the invention are for use in reducing tumor size or reducing tumor growth. The compositions of the invention may be effective for reducing tumor size or growth. In certain embodiments, the compositions of the invention are for use in subjects with solid tumors. In certain embodiments, the compositions of the invention are for use in reducing or preventing angiogenesis in the treatment of cancer. IL-17 and Th17 cells have central roles in angiogenesis. In certain embodiments, the compositions of the invention are for use in preventing metastasis.

In certain embodiments, the compositions of the invention are for use in treating or preventing breast cancer. The compositions of the invention may be effective for treating breast cancer, and IL-17 and Th17 cells have important roles in breast cancer [39]. In certain embodiments, the compositions of the invention are for use in reducing tumor size, reducing tumor growth, or reducing angiogenesis in the treatment of breast cancer. In preferred embodiments the cancer is mammary carcinoma. In preferred embodiments the cancer is stage IV breast cancer.

In certain embodiments, the compositions of the invention are for use in treating or preventing lung cancer. The compositions of the invention may be effective for treating lung cancer, and IL-17 and Th17 cells have important roles in lung cancer [40]. In certain embodiments, the compositions of the invention are for use in reducing tumor size, reducing tumor growth, or reducing angiogenesis in the treatment of lung cancer. In preferred embodiments the cancer is lung carcinoma.

In certain embodiments, the compositions of the invention are for use in treating or preventing liver cancer. The compositions of the invention may be effective for treating liver cancer, and IL-17 and Th17 cells have important roles in liver cancer [41]. In certain embodiments, the compositions of the invention are for use in reducing tumor size, reducing tumor growth, or reducing angiogenesis in the treatment of liver cancer. In preferred embodiments the cancer is hepatoma (hepatocellular carcinoma).

In certain embodiments, the compositions of the invention are for use in treating or preventing carcinoma. The compositions of the invention may be particularly effective for treating carcinoma. In certain embodiments, the compositions of the invention are for use in treating or preventing non-immunogenic cancer. The compositions of the invention may be effective for treating non-immunogenic cancers.

In further embodiments, the compositions of the invention are for use in treating or preventing acute lymphoblastic leukemia (ALL), acute myeloid leukemia, adrenocortical carcinoma, basal-cell carcinoma, bile duct cancer, bladder cancer, bone tumor, osteosarcoma/malignant fibrous histiocytoma, brainstem glioma, brain tumor, cerebellar astrocytoma, cerebral astrocytoma/malignant glioma, ependymoma, medulloblastoma, supratentorial primitive neuroectodermal tumors, breast cancer, bronchial adenomas/carcinoids, Burkitt's lymphoma, carcinoid tumor, cervical cancer, chronic lymphocytic leukemia, chronic myelogenous leukemia, chronic myeloproliferative disorders, colon cancer, cutaneous T-cell lymphoma, endometrial cancer, ependymoma, esophageal cancer, Ewing's sarcoma, intraocular melanoma, retinoblastoma, gallbladder cancer, gastric cancer, gastrointestinal carcinoid tumor, gastrointestinal stromal tumor (GIST), germ cell tumor, glioma, childhood visual pathway and hypothalamic, Hodgkin lymphoma, melanoma, islet cell carcinoma, Kaposi sarcoma, renal cell cancer, laryngeal cancer, leukaemias, lymphomas, mesothelioma, neuroblastoma, non-Hodgkin lymphoma, oropharyngeal cancer, osteosarcoma, ovarian cancer, pancreatic cancer, parathyroid cancer, pharyngeal cancer, pituitary adenoma, plasma cell neoplasia, prostate cancer, renal cell carcinoma, retinoblastoma, sarcoma, testicular cancer, thyroid cancer, or uterine cancer.

The compositions of the invention may be particularly effective when used in combination with further therapeutic agents. The immune-modulatory effects of the compositions of the invention may be effective when combined with more direct anti-cancer agents. Therefore, in certain embodiments, the invention provides a composition comprising a bacterial strain of the genus Erysipelatoclostridium and an anticancer agent. In preferred embodiments the anticancer agent is an immune checkpoint inhibitor, a targeted antibody immunotherapy, a CAR-T cell therapy, an oncolytic virus, or a cytostatic drug. In preferred embodiments, the composition comprises an anti-cancer agent selected from the group consisting of: Yervoy (ipilimumab, BMS); Keytruda (pembrolizumab, Merck); Opdivo (nivolumab, BMS); MEDI4736 (AZ/Medlmmune); MPDL3280A (Roche/Genentech); Tremelimumab (AZ/Medlmmune); CT-011 (pidilizumab, CureTech); BMS-986015 (lirilumab, BMS); MEDI0680 (AZ/Medlmmune); MSB-0010718C (Merck); PF-05082566 (Pfizer); MEDI6469 (AZ/Medlmmune); BMS-986016 (BMS); BMS-663513 (urelumab, BMS); IMP321 (Prima Biomed); LAG525 (Novartis); ARGX-110 (arGEN-X); PF-05082466 (Pfizer); CDX-1127 (varlilumab; CellDex Therapeutics); TRX-518 (GITR Inc.); MK-4166 (Merck); JTX-2011 (Jounce Therapeutics); ARGX-115 (arGEN-X); NLG-9189 (indoximod, NewLink Genetics); INCB024360 (Incyte); IPH2201 (Innate Immotherapeutics/AZ); NLG-919 (NewLink Genetics); anti-VISTA (JnJ); Epacadostat (INCB24360, Incyte); F001287 (Flexus/BMS); CP 870893 (University of Pennsylvania); MGA271 (Macrogenix); Emactuzumab (Roche/Genentech); Galunisertib (Eli Lilly); Ulocuplumab (BMS); BKT140/BL8040 (Biokine Therapeutics); Bavituximab (Peregrine Pharmaceuticals); CC 90002 (Celgene); 852A (Pfizer); VTX-2337 (VentiRx Pharmaceuticals); IMO-2055 (Hybridon, Idera Pharmaceuticals); LY2157299 (Eli Lilly); EW-7197 (Ewha Women's University, Korea); Vemurafenib (Plexxikon); Dabrafenib (Genentech/GSK); BMS-777607 (BMS); BLZ945 (Memorial Sloan-Kettering Cancer Centre); Unituxin (dinutuximab, United Therapeutics Corporation); Blincyto (blinatumomab, Amgen); Cyramza (ramucirumab, Eli Lilly); Gazyva (obinutuzumab, Roche/Biogen); Kadcyla (ado-trastuzumab emtansine, Roche/Genentech); Perjeta (pertuzumab, Roche/Genentech); Adcetris (brentuximab vedotin, Takeda/Millennium); Arzerra (ofatumumab, GSK); Vectibix (panitumumab, Amgen); Avastin (bevacizumab, Roche/Genentech); Erbitux (cetuximab, BMS/Merck); Bexxar (tositumomab-I131, GSK); Zevalin (ibritumomab tiuxetan, Biogen); Campath (alemtuzumab, Bayer); Mylotarg (gemtuzumab ozogamicin, Pfizer); Herceptin (trastuzumab, Roche/Genentech); Rituxan (rituximab, Genentech/Biogen); volociximab (Abbvie); Enavatuzumab (Abbvie); ABT-414 (Abbvie); Elotuzumab (Abbvie/BMS); ALX-0141 (Ablynx); Ozaralizumab (Ablynx); Actimab-C (Actinium); Actimab-P (Actinium); Milatuzumab-dox (Actinium); Emab-SN-38 (Actinium); Naptumonmab estafenatox (Active Biotech); AFM13 (Affimed); AFM11 (Affimed); AGS-16C3F (Agensys); AGS-16M8F (Agensys); AGS-22ME (Agensys); AGS-15ME (Agensys); GS-67E (Agensys); ALXN6000 (samalizumab, Alexion); ALT-836 (Altor Bioscience); ALT-801 (Altor Bioscience); ALT-803 (Altor Bioscience); AMG780 (Amgen); AMG 228 (Amgen); AMG820 (Amgen); AMG172 (Amgen); AMG595 (Amgen); AMG110 (Amgen); AMG232 (adecatumumab, Amgen); AMG211 (Amgen/MedImmune); BAY20-10112 (Amgen/Bayer); Rilotumumab (Amgen); Denosumab (Amgen); AMP-514 (Amgen); MEDI575 (AZ/Medlmmune); MEDI3617 (AZ/Medlmmune); MEDI6383 (AZ/Medlmmune); MEDI551 (AZ/Medlmmune); Moxetumomab pasudotox (AZ/Medlmmune); MEDI565 (AZ/Medlmmune); MEDI0639 (AZ/Medlmmune); MEDI0680 (AZ/Medlmmune); MEDI562 (AZ/Medlmmune); AV-380 (AVEO); AV203 (AVEO); AV299 (AVEO); BAY79-4620 (Bayer); Anetumab ravtansine (Bayer); vantictumab (Bayer); BAY94-9343 (Bayer); Sibrotuzumab (Boehringer Ingleheim); BI-836845 (Boehringer Ingleheim); B-701 (BioClin); BIIB015 (Biogen); Obinutuzumab (Biogen/Genentech); BI-505 (Bioinvent); BI-1206 (Bio invent); TB-403 (Bio invent); BT-062 (Biotest) BIL-010t (Biosceptre); MDX-1203 (BMS); MDX-1204 (BMS); Necitumumab (BMS); CAN-4 (Cantargia AB); CDX-011 (Celldex); CDX1401 (Celldex); CDX301 (Celldex); U3-1565 (Daiichi Sankyo); patritumab (Daiichi Sankyo); tigatuzumab (Daiichi Sankyo); nimotuzumab (Daiichi Sankyo); DS-8895 (Daiichi Sankyo); DS-8873 (Daiichi Sankyo); DS-5573 (Daiichi Sankyo); MORab-004 (Eisai); MORab-009 (Eisai); MORab-003 (Eisai); MORab-066 (Eisai); LY3012207 (Eli Lilly); LY2875358 (Eli Lilly); LY2812176 (Eli Lilly); LY3012217(Eli Lilly); LY2495655 (Eli Lilly); LY3012212 (Eli Lilly); LY3012211 (Eli Lilly); LY3009806 (Eli Lilly); cixutumumab (Eli Lilly); Flanvotumab (Eli Lilly); IMC-TR1 (Eli Lilly); Ramucirumab (Eli Lilly); Tabalumab (Eli Lilly); Zanolimumab (Emergent Biosolution); FG-3019 (FibroGen); FPA008 (Five Prime Therapeutics); FP-1039 (Five Prime Therapeutics); FPA144 (Five Prime Therapeutics); catumaxomab (Fresenius Biotech); IMAB362 (Ganymed); IMAB027 (Ganymed); HuMax-CD74 (Genmab); HuMax-TFADC (Genmab); GS-5745 (Gilead); GS-6624 (Gilead); OMP-21M18 (demcizumab, GSK); mapatumumab (GSK); IMGN289 (ImmunoGen); IMGN901 (ImmunoGen); IMGN853 (ImmunoGen); IMGN529 (ImmunoGen); IMMU-130 (Immunomedics); milatuzumab-dox (Immunomedics); IMMU-115 (Immunomedics); IMMU-132 (Immunomedics); IMMU-106 (Immunomedics); IMMU-102 (Immunomedics); Epratuzumab (Immunomedics); Clivatuzumab (Immunomedics); IPH41 (Innate Immunotherapeutics); Daratumumab (Janssen/Genmab); CNTO-95 (Intetumumab, Janssen); CNTO-328 (siltuximab, Janssen); KB004 (KaloBios); mogamulizumab (Kyowa Hakko Kirrin); KW-2871 (ecromeximab, Life Science); Sonepcizumab (Lpath); Margetuximab (Macrogenics); Enoblituzumab (Macrogenics); MGD006 (Macrogenics); MGF007 (Macrogenics); MK-0646 (dalotuzumab, Merck); MK-3475 (Merck); Sym004 (Symphogen/Merck Serono); DI17E6 (Merck Serono); MOR208 (Morphosys); MOR202 (Morphosys); Xmab5574 (Morphosys); BPC-1C (ensituximab, Precision Biologics); TAS266 (Novartis); LFA102 (Novartis); BHQ880 (Novartis/Morphosys); QGE031 (Novartis); HCD122 (lucatumumab, Novartis); LJM716 (Novartis); AT355 (Novartis); OMP-21M18 (Demcizumab, OncoMed); OMP52M51 (Oncomed/GSK); OMP-59R5 (Oncomed/GSK); vantictumab (Oncomed/Bayer); CMC-544 (inotuzumab ozogamicin, Pfizer); PF-03446962 (Pfizer); PF-04856884 (Pfizer); PSMA-ADC (Progenics); REGN1400 (Regeneron); REGN910 (nesvacumab, Regeneron/Sanofi); REGN421 (enoticumab, Regeneron/Sanofi); RG7221, RG7356, RG7155, RG7444, RG7116, RG7458, RG7598, RG7599, RG7600, RG7636, RG7450, RG7593, RG7596, DCDS3410A, RG7414 (parsatuzumab), RG7160 (imgatuzumab), RG7159 (obintuzumab), RG7686, RG3638 (onartuzumab), RG7597 (Roche/Genentech); SAR307746 (Sanofi); SAR566658 (Sanofi); SAR650984 (Sanofi); SAR153192 (Sanofi); SAR3419 (Sanofi); SAR256212 (Sanofi), SGN-LIV1A (lintuzumab, Seattle Genetics); SGN-CD33A (Seattle Genetics); SGN-75 (vorsetuzumab mafodotin, Seattle Genetics); SGN-19A (Seattle Genetics) SGN-CD70A (Seattle Genetics); SEA-CD40 (Seattle Genetics); ibritumomab tiuxetan (Spectrum); MLN0264 (Takeda); ganitumab (Takeda/Amgen); CEP-37250 (Teva); TB-403 (Thrombogenic); VB4-845 (Viventia); Xmab2512 (Xencor); Xmab5574 (Xencor); nimotuzumab (YM Biosciences); Carlumab (Janssen); NY-ESO TCR (Adaptimmune); MAGE-A-10 TCR (Adaptimmune); CTL019 (Novartis); JCAR015 (Juno Therapeutics); KTE-C19 CAR (Kite Pharma); UCART19 (Cellectis); BPX-401 (Bellicum Pharmaceuticals); BPX-601 (Bellicum Pharmaceuticals); ATTCK20 (Unum Therapeutics); CAR-NKG2D (Celyad); Onyx-015 (Onyx Pharmaceuticals); H101 (Shanghai Sunwaybio); DNX-2401 (DNAtrix); VCN-01 (VCN Biosciences); Colo-Adl (PsiOxus Therapeutics); ProstAtak (Advantagene); Oncos-102 (Oncos Therapeutics); CG0070 (Cold Genesys); Pexa-vac (JX-594, Jennerex Biotherapeutics); GL-ONC1 (Genelux); T-VEC (Amgen); G207 (Medigene); HF10 (Takara Bio); SEPREHVIR (HSV1716, Virttu Biologics); OrienX010 (OrienGene Biotechnology); Reolysin (Oncolytics Biotech); SVV-001 (Neotropix); Cacatak (CVA21, Viralytics); Alimta (Eli Lilly), cisplatin, oxaliplatin, irinotecan, folinic acid, methotrexate, cyclophosphamide, 5-fluorouracil, Zykadia (Novartis), Tafinlar (GS K), Xalkori (Pfizer), Iressa (AZ), Gilotrif (Boehringer Ingelheim), Tarceva (Astellas Pharma), Halaven (Eisai Pharma), Veliparib (Abbvie), AZD9291 (AZ), Alectinib (Chugai), LDK378 (Novartis), Genetespib (Synta Pharma), Tergenpumatucel-L (NewLink Genetics), GV1001 (Kael-GemVax), Tivantinib (ArQule); Cytoxan (BMS); Oncovin (Eli Lilly); Adriamycin (Pfizer); Gemzar (Eli Lilly); Xeloda (Roche); Ixempra (BMS); Abraxane (Celgene); Trelstar (Debiopharm); Taxotere (Sanofi); Nexavar (Bayer); IMMU-132 (Immunomedics); E7449 (Eisai); Thermodox (Celsion); Cometriq (Exellxis); Lonsurf (Taiho Pharmaceuticals); Camptosar (Pfizer); UFT (Taiho Pharmaceuticals); and TS-1 (Taiho Pharmaceuticals).

In some embodiments, the one or more Erysipelatoclostridium bacterial strains is/are the only therapeutically active agent(s) in a composition of the invention. In some embodiments, the bacterial strain(s) in the composition is/are the only therapeutically active agent(s) in a composition of the invention.

Asthma

In preferred embodiments, the compositions of the invention are for use in treating or preventing asthma. The compositions of the invention may achieve a reduction in the recruitment of neutrophils and/or eosinophils into the airways following sensitization and challenge with house dust mite extract and so they may be useful in the treatment or prevention of asthma. Asthma is a chronic disease characterized by inflammation and restriction of the airways. The inflammation in asthma may be mediated by IL-17 and/or Th17 cells, and so the compositions of the invention may be particularly effective for preventing or treating asthma. The inflammation in asthma may be mediated by eosinophils and/or neutrophils.

In certain embodiments, the asthma is eosinophilic or allergic asthma. Eosinophilic and allergic asthma are characterized by increased numbers of eosinophils in peripheral blood and in airway secretions and is associated pathologically with thickening of the basement membrane zone and pharmacologically by corticosteroid responsiveness [42]. Compositions that reduce or inhibit eosinophil recruitment or activation may be useful for treating or preventing eosinophilic and allergic asthma.

In additional embodiments, the compositions of the invention are for use in treating or preventing neutrophilic asthma (or non-eosinophilic asthma). High neutrophil numbers are associated with severe asthma that may be insensitive to corticosteroid treatment. Compositions that reduce or inhibit neutrophil recruitment or activation may be useful for treating or preventing neutrophilic asthma.

Eosinophilic and neutrophilic asthma are not mutually exclusive conditions and treatments that help address either the eosinophil and neutrophil responses may be useful for treating asthma in general.

Increased IL-17 levels and activation of the Th17 pathway are associated with severe asthma, so the compositions of the invention may be useful for preventing the development of severe asthma or for treating severe asthma.

In certain embodiments, the compositions of the invention are for use in methods reducing an eosinophilic inflammatory response in the treatment or prevention of asthma, or for use in methods of reducing a neutrophilic inflammatory response in the treatment or prevention of asthma. As noted above, high levels of eosinophils in asthma is associated pathologically with thickening of the basement membrane zone, so reducing eosinophilic inflammatory response in the treatment or prevention of asthma may be able to specifically address this feature of the disease. Also, elevated neutrophils, either in combination with elevated eosinophils or in their absence, is associated with severe asthma and chronic airway narrowing. Therefore, reducing the neutrophilic inflammatory response may be particularly useful for addressing severe asthma.

In certain embodiments, the compositions reduce peribronchiolar infiltration in allergic asthma, or are for use in reducing peribronchiolar infiltration in the treatment of allergic asthma. In certain embodiments, the compositions reduce peribronchiolar and/or perivascular infiltration in neutrophilic asthma, or are for use in reducing peribronchiolar and/or perivascular infiltration in the treatment of allergic neutrophilic asthma.

In certain embodiments, treatment with compositions of the invention provides a reduction or prevents an elevation in TNFα levels.

In certain embodiments, the compositions of the invention are for use in a method of treating asthma that results in a reduction of the eosinophilic and/or neutrophilic inflammatory response. In certain embodiments, the subject to be treated has, or has previously been identified as having, elevated neutrophil or eosinophil levels, for example as identified through blood sampling or sputum analysis.

The compositions of the invention may be useful for preventing the development of asthma in a new-born when administered to the new-born, or to a pregnant woman. The compositions may be useful for preventing the development of asthma in children. The compositions of the invention may be useful for treating or preventing adult-onset asthma. The compositions of the invention may be useful for managing or alleviating asthma. The compositions of the invention may be particularly useful for reducing symptoms associated with asthma that is aggravated by allergens, such as house dust mites.

Treatment or prevention of asthma may refer to, for example, an alleviation of the severity of symptoms or a reduction in the frequency of exacerbations or the range of triggers that are a problem for the subject.

Arthritis

In preferred embodiments, the compositions of the invention are for use in treating or preventing rheumatoid arthritis (RA). The compositions of the invention may achieve a reduction in the clinical signs of RA in a mouse model, reduce cartilage and bone damage, and reduce the IL-17 inflammatory response, and so they may be useful in the treatment or prevention of RA. RA is a systemic inflammatory disorder that primarily affects joints. RA is associated with an inflammatory response that results in swelling of joints, synovial hyperplasia, and destruction of cartilage and bone. IL-17 and Th17 cells may have a key role in RA, for example because IL-17 inhibits matrix production in chondrocytes and osteoblasts and activates the production and function of matrix metalloproteinases and because RA disease activity is correlated to IL-17 levels and Th-17 cell numbers [43,44], so the compositions of the invention may be particularly effective for preventing or treating RA.

In certain embodiments, the compositions of the invention are for use in lowering IL-17 levels or preventing elevation of IL-17 levels in the treatment or prevention of RA. In certain embodiments, treatment with compositions of the invention provides a reduction or prevents an elevation in IL-17 levels, in particular IL-17A levels. In certain embodiments, treatment with compositions of the invention provides a reduction or prevents an elevation in IFN-γ or IL-6 levels.

In certain embodiments, treatment with the compositions of the invention results in a reduction in the swelling of joints. In certain embodiments, the compositions of the invention are for use in subjects with swollen joints or subjects identified as at risk of having swollen joints. In certain embodiments, the compositions of the invention are for use in a method of reducing joint swelling in RA.

In certain embodiments, treatment with the compositions of the invention results in a reduction in cartilage damage or bone damage. In certain embodiments, the compositions of the invention are for use in reducing or preventing cartilage or bone damage in the treatment of RA. In certain embodiments, the compositions are for use in treating subject with severe RA that are at risk of cartilage or bone damage.

Increased IL-17 levels and Th17 cell numbers are associated with cartilage and bone destruction in RA [43,44]. IL-17 is known to activate matrix destruction in cartilage and bone tissue and IL-17 has an inhibitory effect on matrix production in chondrocytes and osteoblasts. Therefore, in certain embodiments, the compositions of the invention are for use in preventing bone erosion or cartilage damage in the treatment of RA. In certain embodiments, the compositions are for use in treating subjects that exhibit bone erosion or cartilage damage or subjects identified as at risk of bone erosion or cartilage damage.

TNF-α is also associated with RA, but TNF-α is not involved in the pathogenesis of the later stages of the disease. In contrast, IL-17 has a role throughout all stages of chronic disease [45]. Therefore, in certain embodiments the compositions of the invention are for use in treating chronic RA or late-stage RA, such as disease that includes joint destruction and loss of cartilage. In certain embodiments, the compositions of the invention are for treating subjects that have previously received anti-TNF-α therapy. In certain embodiments, the subjects to be treated do not respond or no longer respond to anti-TNF-α therapy.

The compositions of the invention may be useful for modulating a subject's immune system, so in certain embodiments the compositions of the invention are for use in preventing RA in a subject that has been identified as at risk of RA, or that has been diagnosed with early-stage RA. The compositions of the invention may be useful for preventing the development of RA.

The compositions of the invention may be useful for managing or alleviating RA. The compositions of the invention may be particularly useful for reducing symptoms associated with joint swelling or bone destruction. Treatment or prevention of RA may refer to, for example, an alleviation of the severity of symptoms or a reduction in the frequency of exacerbations or the range of triggers that are a problem for the subject.

Multiple Sclerosis

In preferred embodiments, the compositions of the invention are for use in treating or preventing multiple sclerosis. The compositions of the invention may achieve a reduction in the disease incidence and disease severity in a mouse model of multiple sclerosis (the EAE model), and so they may be useful in the treatment or prevention of multiple sclerosis. Multiple sclerosis is an inflammatory disorder associated with damage to the myelin sheaths of neurons, particularly in the brain and spinal column. Multiple sclerosis is a chronic disease, which is progressively incapacitating and which evolves in episodes. IL-17 and Th17 cells may have a key role in multiple sclerosis, for example because IL-17 levels may correlate with multiple sclerosis lesions, IL-17 can disrupt blood brain barrier endothelial cell tight junctions, and Th17 cells can migrate into the central nervous system and cause neuronal loss [46,47]. Therefore, the compositions of the invention may be particularly effective for preventing or treating multiple sclerosis.

In certain embodiments, treatment with the compositions of the invention results in a reduction in disease incidence or disease severity. In certain embodiments, the compositions of the invention are for use in reducing disease incidence or disease severity. In certain embodiments, treatment with the compositions of the invention prevents a decline in motor function or results in improved motor function. In certain embodiments, the compositions of the invention are for use in preventing a decline in motor function or for use in improving motor function. In certain embodiments, treatment with the compositions of the invention prevents the development of paralysis. In certain embodiments, the compositions of the invention are for use in preventing paralysis in the treatment of multiple sclerosis.

The compositions of the invention may be useful for modulating a subject's immune system, so in certain embodiments the compositions of the invention are for use in preventing multiple sclerosis in a subject that has been identified as at risk of multiple sclerosis, or that has been diagnosed with early-stage multiple sclerosis or “relapsing-remitting” multiple sclerosis. The compositions of the invention may be useful for preventing the development of sclerosis.

The compositions of the invention may be useful for managing or alleviating multiple sclerosis. The compositions of the invention may be particularly useful for reducing symptoms associated with multiple sclerosis. Treatment or prevention of multiple sclerosis may refer to, for example, an alleviation of the severity of symptoms or a reduction in the frequency of exacerbations or the range of triggers that are a problem for the subject.

Modes of Administration

Preferably, the compositions of the invention are to be administered to the gastrointestinal tract in order to enable delivery to and/or partial or total colonization of the intestine with the bacterial strain of the invention. Generally, the compositions of the invention are administered orally, but they may be administered rectally, intranasally, or via buccal or sublingual routes.

In certain embodiments, the compositions of the invention may be administered as a foam, as a spray or a gel.

In certain embodiments, the compositions of the invention may be administered as a suppository, such as a rectal suppository, for example in the form of a theobroma oil (cocoa butter), synthetic hard fat (e.g. suppocire, witepsol), glycero-gelatin, polyethylene glycol, or soap glycerin composition.

In certain embodiments, the composition of the invention is administered to the gastrointestinal tract via a tube, such as a nasogastric tube, orogastric tube, gastric tube, jejunostomy tube (J tube), percutaneous endoscopic gastrostomy (PEG), or a port, such as a chest wall port that provides access to the stomach, jejunum and other suitable access ports.

The compositions of the invention may be administered once, or they may be administered sequentially as part of a treatment regimen. In certain embodiments, the compositions of the invention are to be administered daily.

In certain embodiments of the invention, treatment according to the invention is accompanied by assessment of the subject's gut microbiota. Treatment may be repeated if delivery of and/or partial or total colonization with the strain of the invention is not achieved such that efficacy is not observed, or treatment may be ceased if delivery and/or partial or total colonization is successful and efficacy is observed.

In certain embodiments, the composition of the invention may be administered to a pregnant animal, for example a mammal such as a human in order to prevent an inflammatory or autoimmune disease developing in her child in utero and/or after it is born.

The compositions of the invention may be administered to a subject that has been diagnosed with a disease or condition mediated by IL-17 or the Th17 pathway, or that has been identified as being at risk of a disease or condition mediated by IL-17 or the Th17 pathway. The compositions may also be administered as a prophylactic measure to prevent the development of diseases or conditions mediated by IL-17 or the Th17 pathway in a healthy subject.

The compositions of the invention may be administered to a subject that has been identified as having an abnormal gut microbiota. For example, the subject may have reduced or absent colonization by Erysipelatoclostridium.

The compositions of the invention may be administered as a food product, such as a nutritional supplement.

Generally, the compositions of the invention are for the treatment of humans, although they may be used to treat animals including monogastric mammals such as poultry, pigs, cats, dogs, horses or rabbits. The compositions of the invention may be useful for enhancing the growth and performance of animals. If administered to animals, oral gavage may be used.

Compositions

Generally, the composition of the invention comprises bacteria. In preferred embodiments of the invention, the composition is formulated in freeze-dried form. For example, the composition of the invention may comprise granules or gelatin capsules, for example hard gelatin capsules, comprising a bacterial strain of the invention.

Preferably, the composition of the invention comprises lyophilized bacteria. Lyophilization of bacteria is a well-established procedure and relevant guidance is available in, for example, references [48-50].

Alternatively, the composition of the invention may comprise a live, active bacterial culture.

In some embodiments, the bacterial strain in the composition of the invention has not been inactivated, for example, has not been heat-inactivated. In some embodiments, the bacterial strain in the composition of the invention has not been killed, for example, has not been heat-killed. In some embodiments, the bacterial strain in the composition of the invention has not been attenuated, for example, has not been heat-attenuated. For example, in some embodiments, the bacterial strain in the composition of the invention has not been killed, inactivated and/or attenuated. For example, in some embodiments, the bacterial strain in the composition of the invention is live. For example, in some embodiments, the bacterial strain in the composition of the invention is viable. For example, in some embodiments, the bacterial strain in the composition of the invention is capable of at least partially or totally colonizing the intestine. For example, in some embodiments, the bacterial strain in the composition of the invention is viable and capable of at least partially or totally colonizing the intestine.

In some embodiments, the composition comprises a mixture of live bacterial strains and bacterial strains that have been killed.

In preferred embodiments, the composition of the invention is encapsulated to enable delivery of the bacterial strain to the intestine. Encapsulation protects the composition from degradation until delivery at the target location through, for example, rupturing with chemical or physical stimuli such as pressure, enzymatic activity, or physical disintegration, which may be triggered by changes in pH. Any appropriate encapsulation method may be used. Exemplary encapsulation techniques include entrapment within a porous matrix, attachment or adsorption on solid carrier surfaces, self-aggregation by flocculation or with cross-linking agents, and mechanical containment behind a microporous membrane or a microcapsule. Guidance on encapsulation that may be useful for preparing compositions of the invention is available in, for example, references [51] and [52].

The composition may be administered orally and may be in the form of a tablet, capsule or powder. Encapsulated products are preferred because Erysipelatoclostridium ramosum are anaerobes. Other ingredients (such as vitamin C, for example), may be included as oxygen scavengers and prebiotic substrates to improve the delivery and/or partial or total colonization and survival in vivo. Alternatively, the probiotic composition of the invention may be administered orally as a food or nutritional product, such as milk or whey based fermented dairy product, or as a pharmaceutical product.

The composition may be formulated as a probiotic.

A composition of the invention includes a therapeutically effective amount of a bacterial strain of the invention. A therapeutically effective amount of a bacterial strain is sufficient to exert a beneficial effect upon a subject. A therapeutically effective amount of a bacterial strain may be sufficient to result in delivery to and/or partial or total colonization of the subject's intestine.

A suitable daily dose of the bacteria, for example for an adult human, may be from about 1×10³to about 1×10¹¹colony forming units (CFU); for example, from about 1×10⁷to about 1×10¹⁰CFU; in another example from about 1×10⁶to about 1×10¹⁰CFU.

In certain embodiments, the composition contains the bacterial strain in an amount of from about 1×10⁶to about 1×10¹¹CFU/g, respect to the weight of the composition; for example, from about 1×10⁸to about 1×10¹⁰CFU/g. The dose may be, for example, 1 g, 3 g, 5 g, and 10 g of the composition.

Typically, a probiotic, such as the composition of the invention, is optionally combined with at least one suitable prebiotic compound. A prebiotic compound is usually a non-digestible carbohydrate such as an oligo- or polysaccharide, or a sugar alcohol, which is not degraded or absorbed in the upper digestive tract. Known prebiotics include commercial products such as inulin and transgalacto-oligosaccharides.

In certain embodiments, the probiotic composition of the present invention includes a prebiotic compound in an amount of from about 1 to about 30% by weight, respect to the total weight composition, (e.g. from 5 to 20% by weight). Carbohydrates may be selected from the group consisting of: fructo-oligosaccharides (or FOS), short-chain fructo-oligosaccharides, inulin, isomalt-oligosaccharides, pectins, xylo-oligosaccharides (or XOS), chitosan-oligosaccharides (or COS), beta-glucans, arable gum modified and resistant starches, polydextrose, D-tagatose, acacia fibers, carob, oats, and citrus fibers. In one aspect, the prebiotics are the short-chain fructo-oligosaccharides (for simplicity shown herein below as FOSs-c.c); said FOSs-c.c. are not digestible carbohydrates, generally obtained by the conversion of the beet sugar and including a saccharose molecule to which three glucose molecules are bonded.

The compositions of the invention may comprise pharmaceutically acceptable excipients or carriers. Examples of such suitable excipients may be found in the reference [53]. Acceptable carriers or diluents for therapeutic use are well known in the pharmaceutical art and are described, for example, in reference [54]. Examples of suitable carriers include lactose, starch, glucose, methyl cellulose, magnesium stearate, mannitol, sorbitol and the like. Examples of suitable diluents include ethanol, glycerol and water. The choice of pharmaceutical carrier, excipient or diluent can be selected with regard to the intended route of administration and standard pharmaceutical practice. The pharmaceutical compositions may comprise as, or in addition to, the carrier, excipient or diluent any suitable binder(s), lubricant(s), suspending agent(s), coating agent(s), solubilizing agent(s). Examples of suitable binders include starch, gelatin, natural sugars such as glucose, anhydrous lactose, free-flow lactose, beta-lactose, corn sweeteners, natural and synthetic gums, such as acacia, tragacanth or sodium alginate, carboxymethyl cellulose and polyethylene glycol. Examples of suitable lubricants include sodium oleate, sodium stearate, magnesium stearate, sodium benzoate, sodium acetate, sodium chloride and the like. Preservatives, stabilizers, dyes and even flavoring agents may be provided in the pharmaceutical composition. Examples of preservatives include sodium benzoate, sorbic acid and esters of p-hydroxybenzoic acid. Antioxidants and suspending agents may be also used.

The compositions of the invention may be formulated as a food product. For example, a food product may provide nutritional benefit in addition to the therapeutic effect of the invention, such as in a nutritional supplement. Similarly, a food product may be formulated to enhance the taste of the composition of the invention or to make the composition more attractive to consume by being more similar to a common food item, rather than to a pharmaceutical composition. In certain embodiments, the composition of the invention is formulated with a nutritious product such as a milk-based product. The term “milk-based product” means any liquid or semi-solid milk- or whey-based product having a varying fat content. The milk-based product can be, e.g., cow's milk, goat's milk, sheep's milk, skimmed milk, whole milk, milk recombined from powdered milk and whey without any processing, or a processed product, such as yoghurt, curdled milk, curd, sour milk, sour whole milk, butter milk and other sour milk products. Another important group includes milk beverages, such as whey beverages, fermented milks, condensed milks, infant or baby milks; flavored milks, ice cream; milk-containing food such as sweets.

In some embodiments, the compositions of the invention comprise one or more bacterial strains of the genus Erysipelatoclostridium and do not contain bacteria from any other genus, or which comprise only de minimis or biologically irrelevant amounts of bacteria from another genus. Thus, in some embodiments, the invention provides a composition comprising one or more bacterial strains of the genus Erysipelatoclostridium, which does not contain bacteria from any other genus or which comprises only de minimis or biologically irrelevant amounts of bacteria from another genus, for use in therapy.

In certain embodiments, the compositions of the invention contain a single bacterial strain or species and do not contain any other bacterial strains or species. Such compositions may comprise only de minimis or biologically irrelevant amounts of other bacterial strains or species. Such compositions may be a culture that is substantially free from other species of organism. Thus, in some embodiments, the invention provides a composition comprising a single bacterial strain or species of the genus Erysipelatoclostridium, which does not contain bacteria from any other genus or which comprises only de minimis or biologically irrelevant amounts of bacteria from another genus for use in therapy. In some embodiments, the composition consists essentially of a bacteria strain of the genus Erysipelatoclostridium.

In some embodiments, the compositions of the invention comprise more than one bacterial strain or species. For example, in some embodiments, the compositions of the invention comprise more than one strain from within the same species (e.g. more than 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40 or 45 strains), and, optionally, do not contain bacteria from any other species. In some embodiments, the compositions of the invention comprise less than 50 strains from within the same species (e.g. less than 45, 40, 35, 30, 25, 20, 15, 12, 10, 9, 8, 7, 6, 5, 4 or 3 strains), and, optionally, do not contain bacteria from any other species. In some embodiments, the compositions of the invention comprise 1-40, 1-30, 1-20, 1-19, 1-18, 1-15, 1-10, 1-9, 1-8, 1-7, 1-6, 1-5, 1-4, 1-3, 1-2, 2-50, 2-40, 2-30, 2-20, 2-15, 2-10, 2-5, 6-30, 6-15, 16-25, or 31-50 strains from within the same species and, optionally, do not contain bacteria from any other species. In some embodiments, the compositions of the invention comprise more than one species from within the same genus (e.g. more than 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 17, 20, 23, 25, 30, 35 or 40 species), and, optionally, do not contain bacteria from any other genus. In some embodiments, the compositions of the invention comprise less than 50 species from within the same genus (e.g. less than 50, 45, 40, 35, 30, 25, 20, 15, 12, 10, 8, 7, 6, 5, 4 or 3 species), and, optionally, do not contain bacteria from any other genus. In some embodiments, the compositions of the invention comprise 1-50, 1-40, 1-30, 1-20, 1-15, 1-10, 1-9, 1-8, 1-7, 1-6, 1-5, 1-4, 1-3, 1-2, 2-50, 2-40, 2-30, 2-20, 2-15, 2-10, 2-5, 6-30, 6-15, 16-25, or 31-50 species from within the same genus and, optionally, do not contain bacteria from any other genus. The invention comprises any combination of the foregoing.

In some embodiments, the composition comprises a microbial consortium. For example, in some embodiments, the composition comprises the Erysipelatoclostridium bacterial strain as part of a microbial consortium. For example, in some embodiments, the Erysipelatoclostridium bacterial strain is present in combination with one or more (e.g. at least 2, 3, 4, 5, 10, 15 or 20) other bacterial strains from other genera with which it can live symbiotically in vivo in the intestine. For example, in some embodiments, the composition comprises a bacterial strain of Erysipelatoclostridium ramosum in combination with a bacterial strain from a different genus. In some embodiments, the microbial consortium comprises two or more bacterial strains obtained from a faeces sample of a single organism, e.g. a human. In some embodiments, the microbial consortium is not found together in nature. For example, in some embodiments, the microbial consortium comprises bacterial strains obtained from faeces samples of at least two different organisms. In some embodiments, the two different organisms are from the same species, e.g. two different humans. In some embodiments, the two different organisms are an infant human and an adult human. In some embodiments, the two different organisms are a human and a non-human mammal.

In some embodiments, the composition of the invention additionally comprises a bacterial strain that has the same safety and therapeutic efficacy characteristics as strain MRX027 deposited as NCIMB 42688, but which is not MRX027 deposited as NCIMB 42688, or which is not a Erysipelatoclostridium ramosum or which is not an Erysipelatoclostridium.

In some embodiments in which the composition of the invention comprises more than one bacterial strain, species or genus, the individual bacterial strains, species or genera may be for separate, simultaneous or sequential administration. For example, the composition may comprise all of the more than one bacterial strain, species or genera, or the bacterial strains, species or genera may be stored separately and be administered separately, simultaneously or sequentially. In some embodiments, the more than one bacterial strains, species or genera are stored separately but are mixed together prior to use.

In some embodiments, the bacterial strain for use in the invention is obtained from human adult faeces. In some embodiments in which the composition of the invention comprises more than one bacterial strain, all of the bacterial strains are obtained from human adult faeces or if other bacterial strains are present they are present only in de minimis amounts. The bacteria may have been cultured subsequent to being obtained from the human adult faeces and being used in a composition of the invention. As mentioned above, in some embodiments, the one or more Erysipelatoclostridium bacterial strains is/are the only therapeutically active agent(s) in a composition of the invention. In some embodiments, the bacterial strain(s) in the composition is/are the only therapeutically active agent(s) in a composition of the invention.

The compositions for use in accordance with the invention may or may not require marketing approval.

In certain embodiments, the invention provides the above pharmaceutical composition, wherein said bacterial strain is lyophilized. In certain embodiments, the invention provides the above pharmaceutical composition, wherein said bacterial strain is spray dried. In certain embodiments, the invention provides the above pharmaceutical composition, wherein the bacterial strain is lyophilized or spray dried and wherein it is live. In certain embodiments, the invention provides the above pharmaceutical composition, wherein the bacterial strain is lyophilized or spray dried and wherein it is viable. In certain embodiments, the invention provides the above pharmaceutical composition, wherein the bacterial strain is lyophilized or spray dried and wherein it is capable of at least partially or totally colonizing the intestine. In certain embodiments, the invention provides the above pharmaceutical composition, wherein the bacterial strain is lyophilized or spray dried and wherein it is viable and capable of at least partially or totally colonizing the intestine.

In some cases, the lyophilized or spray dried bacterial strain is reconstituted prior to administration. In some cases, the reconstitution is by use of a diluent described herein.

The compositions of the invention can comprise pharmaceutically acceptable excipients, diluents or carriers.

In certain embodiments, the invention provides a pharmaceutical composition comprising: a bacterial strain as used in the invention; and a pharmaceutically acceptable excipient, carrier or diluent; wherein the bacterial strain is in an amount sufficient to treat a disorder when administered to a subject in need thereof; and wherein the disorder is selected from the group consisting of uveitis; cancer, such as breast cancer, lung cancer, liver cancer, colon cancer, or ovarian cancer; multiple sclerosis; arthritis, such as rheumatoid arthritis, osteoarthritis, psoriatic arthritis, or juvenile idiopathic arthritis; neuromyelitis optica (Devic's disease); ankylosing spondylitis; spondyloarthritis; psoriasis; systemic lupus erythematosus; inflammatory bowel disease, such as Crohn's disease or ulcerative colitis; celiac disease; asthma, such as allergic asthma or neutrophilic asthma; chronic obstructive pulmonary disease (COPD); scleritis; vasculitis; Behcet's disease; atherosclerosis; atopic dermatitis; emphysema; periodontitis; allergic rhinitis; and allograft rejection.

In certain embodiments, the invention provides pharmaceutical composition comprising: a bacterial strain as used in the invention; and a pharmaceutically acceptable excipient, carrier or diluent; wherein the bacterial strain is in an amount sufficient to treat or prevent a disease or condition mediated by IL-17 or the Th17 pathway. In preferred embodiments, said disease or condition is selected from the group consisting of uveitis; cancer, such as breast cancer, lung cancer, liver cancer, colon cancer, or ovarian cancer; multiple sclerosis; arthritis, such as rheumatoid arthritis, osteoarthritis, psoriatic arthritis, or juvenile idiopathic arthritis; neuromyelitis optica (Devic's disease); ankylosing spondylitis; spondyloarthritis; psoriasis; systemic lupus erythematosus; inflammatory bowel disease, such as Crohn's disease or ulcerative colitis; celiac disease; asthma, such as allergic asthma or neutrophilic asthma; chronic obstructive pulmonary disease (COPD); scleritis; vasculitis; Behcet's disease; atherosclerosis; atopic dermatitis; emphysema; periodontitis; allergic rhinitis; and allograft rejection.

In certain embodiments, the invention provides the above pharmaceutical composition, wherein the amount of the bacterial strain is from about 1×10³to about 1×10¹¹colony forming units per gram with respect to a weight of the composition.

In certain embodiments, the invention provides the above pharmaceutical composition, wherein the composition is administered at a dose of 1 g, 3 g, 5 g or 10 g.

In certain embodiments, the invention provides the above pharmaceutical composition, wherein the composition is administered by a method selected from the group consisting of oral, rectal, subcutaneous, nasal, buccal, and sublingual.

In certain embodiments, the invention provides the above pharmaceutical composition, comprising a carrier selected from the group consisting of lactose, starch, glucose, methyl cellulose, magnesium stearate, mannitol and sorbitol.

In certain embodiments, the invention provides the above pharmaceutical composition, comprising a diluent selected from the group consisting of ethanol, glycerol and water.

In certain embodiments, the invention provides the above pharmaceutical composition, comprising an excipient selected from the group consisting of starch, gelatin, glucose, anhydrous lactose, free-flow lactose, beta-lactose, corn sweetener, acacia, tragacanth, sodium alginate, carboxymethyl cellulose, polyethylene glycol, sodium oleate, sodium stearate, magnesium stearate, sodium benzoate, sodium acetate and sodium chloride.

In certain embodiments, the invention provides the above pharmaceutical composition, further comprising at least one of a preservative, an antioxidant and a stabilizer.

In certain embodiments, the invention provides the above pharmaceutical composition, comprising a preservative selected from the group consisting of sodium benzoate, sorbic acid and esters of p-hydroxybenzoic acid.

In certain embodiments, the invention provides the above pharmaceutical composition, wherein when the composition is stored in a sealed container at about 4° C. or about 25° C. and the container is placed in an atmosphere having 50% relative humidity, at least 80% of the bacterial strain as measured in colony forming units, remains after a period of at least about: 1 month, 3 months, 6 months, 1 year, 1.5 years, 2 years, 2.5 years or 3 years.

In some embodiments, the composition of the invention is provided in a sealed container comprising a composition as described herein. In some embodiments, the sealed container is a sachet or bottle. In some embodiments, the composition of the invention is provided in a syringe comprising a composition as described herein.

The composition of the present invention may, in some embodiments, be provided as a pharmaceutical formulation. For example, the composition may be provided as a tablet or capsule. In some embodiments, the capsule is a gelatine capsule (“gel-cap”).

In some embodiments, the compositions of the invention are administered orally. Oral administration may involve swallowing, so that the compound enters the gastrointestinal tract, and/or buccal, lingual, or sublingual administration by which the compound enters the blood stream directly from the mouth.

Pharmaceutical formulations suitable for oral administration include solid plugs, solid microparticulates, semi-solid and liquid (including multiple phases or dispersed systems) such as tablets; soft or hard capsules containing multi- or nano-particulates, liquids (e.g. aqueous solutions), emulsions or powders; lozenges (including liquid-filled); chews; gels; fast dispersing dosage forms; films; ovules; sprays; and buccal/mucoadhesive patches.

In some embodiments the pharmaceutical formulation is an enteric formulation, i.e. a gastro-resistant formulation (for example, resistant to gastric pH) that is suitable for delivery of the composition of the invention to the intestine by oral administration. Enteric formulations may be particularly useful when the bacteria or another component of the composition is acid-sensitive, e.g. prone to degradation under gastric conditions.

In some embodiments, the enteric formulation comprises an enteric coating. In some embodiments, the formulation is an enteric-coated dosage form. For example, the formulation may be an enteric-coated tablet or an enteric-coated capsule, or the like. The enteric coating may be a conventional enteric coating, for example, a conventional coating for a tablet, capsule, or the like for oral delivery. The formulation may comprise a film coating, for example, a thin film layer of an enteric polymer, e.g. an acid-insoluble polymer.

In some embodiments, the enteric formulation is intrinsically enteric, for example, gastro-resistant without the need for an enteric coating. Thus, in some embodiments, the formulation is an enteric formulation that does not comprise an enteric coating. In some embodiments, the formulation is a capsule made from a thermogelling material. In some embodiments, the thermogelling material is a cellulosic material, such as methylcellulose, hydroxymethylcellulose or hydroxypropylmethylcellulose (HPMC). In some embodiments, the capsule comprises a shell that does not contain any film forming polymer. In some embodiments, the capsule comprises a shell and the shell comprises hydroxypropylmethylcellulose and does not comprise any film forming polymer (e.g. see [55]). In some embodiments, the formulation is an intrinsically enteric capsule (for example, Vcaps® from Capsugel).

In some embodiments, the formulation is a soft capsule. Soft capsules are capsules which may, owing to additions of softeners, such as, for example, glycerol, sorbitol, maltitol and polyethylene glycols, present in the capsule shell, have a certain elasticity and softness. Soft capsules can be produced, for example, on the basis of gelatine or starch. Gelatine-based soft capsules are commercially available from various suppliers. Depending on the method of administration, such as, for example, orally or rectally, soft capsules can have various shapes, they can be, for example, round, oval, oblong or torpedo-shaped. Soft capsules can be produced by conventional processes, such as, for example, by the Scherer process, the Accogel process or the droplet or blowing process.

Culturing Methods

The bacterial strains for use in the present invention can be cultured using standard microbiology techniques as detailed in, for example, references [56-58].

The solid or liquid medium used for culture may be YCFA agar or YCFA medium. YCFA medium may include (per 100 ml, approximate values): Casitone (1.0 g), yeast extract (0.25 g), NaHCO₃(0.4 g), cysteine (0.1 g), K₂HPO₄(0.045 g), KH₂PO₄(0.045 g), NaCl (0.09 g), (NH₄)₂SO₄(0.09 g), MgSO₄.7H₂O (0.009 g), CaCl₂(0.009 g), resazurin (0.1 mg), hemin (1 mg), biotin (1 μg), cobalamin (1 μg), p-aminobenzoic acid (3 μg), folic acid (5 μg), and pyridoxamine (15 μg).

Bacterial Strains for Use in Vaccine Compositions

The inventors have identified that the bacterial strains of the invention are useful for treating or preventing diseases or conditions mediated by IL-17 or the Th17 pathway. This is likely to be a result of the effect that the bacterial strains of the invention have on the host immune system. Therefore, the compositions of the invention may also be useful for preventing diseases or conditions mediated by IL-17 or the Th17 pathway, when administered as vaccine compositions. In certain such embodiments, the bacterial strains of the invention are viable. In certain such embodiments, the bacterial strains of the invention are capable of at least partially or totally colonizing the intestine. In certain such embodiments, the bacterial strains of the invention are viable and capable of at least partially or totally colonizing the intestine. In other certain such embodiments, the bacterial strains of the invention may be killed, inactivated or attenuated. In certain such embodiments, the compositions may comprise a vaccine adjuvant. In certain embodiments, the compositions are for administration via injection, such as via subcutaneous injection.

General

The practice of the present invention will employ, unless otherwise indicated, conventional methods of chemistry, biochemistry, molecular biology, immunology and pharmacology, within the skill of the art. Such techniques are explained fully in the literature. See, e.g., references [59] and [60-66], etc.

A subject treated by a method described herein, or by contact with or administration of a composition described herein can be a mammalian subject who can be a human subject, a non-human primate, a canine mammal, a felid mammal or any other mammal. A subject maybe a patient who is a mammalian patient for instance, a human patient, a non-human primate, a canine mammal, a felid mammal or any other mammalian patient.

The term “comprising” encompasses “including” as well as “consisting” e.g. a composition “comprising” X may consist exclusively of X or may include something additional e.g. X+Y.

The term “about” in relation to a numerical value x is optional and means, for example, x±10%.

The word “substantially” does not exclude “completely” e.g. a composition which is “substantially free” from Y may be completely free from Y. Where necessary, the word “substantially” may be omitted from the definition of the invention.

References to a percentage sequence identity between two nucleotide sequences means that, when aligned, that percentage of nucleotides are the same in comparing the two sequences. This alignment and the percent homology or sequence identity can be determined using software programs known in the art, for example those described in section 7.7.18 of ref. [67]. A preferred alignment is determined by the Smith-Waterman homology search algorithm using an affine gap search with a gap open penalty of 12 and a gap extension penalty of 2, BLOSUM matrix of 62. The Smith-Waterman homology search algorithm is disclosed in ref. [68].

Unless specifically stated, a process or method comprising numerous steps may comprise additional steps at the beginning or end of the method, or may comprise additional intervening steps. Also, steps may be combined, omitted or performed in an alternative order, if appropriate.

Various embodiments of the invention are described herein. It will be appreciated that the features specified in each embodiment may be combined with other specified features, to provide further embodiments. In particular, embodiments highlighted herein as being suitable, typical or preferred may be combined with each other (except when they are mutually exclusive).

MODES FOR CARRYING OUT THE INVENTION
Example 1—Efficacy of Bacterial Inocula in a Mouse Model of Uveitis

Summary

This study used a mouse model of interphotoreceptor retinoid-binding protein (IRBP)-induced uveitis to test the effects of bacterial administration on uveitis. Uveitis is a sight-threatening condition resulting from intraocular inflammation and retinal tissue destruction. This disease can be studied in rodents in a model of experimental autoimmune uveoretinitis (EAU) [69]. EAU is an organ-specific disorder where Th1/Th17 cells are directed toward retinal antigens and produce cytokines that activate resident and infiltrating mononuclear cells leading to tissue destruction. EAU can be induced in mice by challenge with retinal antigens including interphotoreceptor retinoid binding protein peptide (IRBPp). Disease onset normally occurs from day 8-9 and peaks after days 14-15. Signs of clinical disease can be monitored using topical endoscopic fundal imaging (TEFI).

Strain

MRX027: Erysipelatoclostridium ramosum.

The strain used in this example has been deposited as NCIMB 42688.

Biotherapeutic was provided in glycerol stock. Microbiological growth media (YCFA) was used for the culture of the agent.

Mice

The mice were strain C57BL/6 and were over 6 weeks old at the beginning of the study. 72 mice were used (+36 Satellite animals). Unhealthy animals were excluded from the study. Animals were housed in specific pathogen free (spf) conditions, in a thermostatically monitored holding room (22±4° C.). Animals were allowed to acclimatize under standard animal house conditions for a minimum of one week prior to use. The health status of the animals was monitored throughout this period and the suitability of each animal for experimental use was assessed prior to study start. Mice were housed in groups of up to 10 animals per cage for the duration of the study. Irradiated pellet diet (Lab diet, EU Rodent diet 22%, 5LF5) and water were available ad libitum throughout the acclimatization and study periods. It is unlikely that any constituent of the diet or water interfered with the study.

Experimental Outline

Adult female C57BL/6 mice were randomly allocated to experimental groups and allowed to acclimatize for one week. Treatments were administered according to the schedule below. On Day 0, animals were administered with an emulsion containing 200 μg of interphotoreceptor retinoid binding protein peptide 1-20 (IRBP p1-20) in complete Freund's adjuvant (CFA) supplemented with 2.5 mg/ml Mycobacterium Tuberculosis H37 Ra by subcutaneous injection. Also on Day 0, animals were administered with 1.5 μg Bordetella Pertussis toxin by intra-peritoneal injection. From Day −14, animals are weighed three times per week. From Day −1 until the end of the experiment on Day 42, animals are monitored twice per week for clinical signs of uveitis using topical endoscopic fundal imaging (TEFI).

Administration Schedule

- All Groups are n=12
- Vehicle for oral administration is YCFA medium.
- Administration volume for twice daily oral administration is 5 ml/kg.

Group
Treatment
Dose
Route
Frequency
Disease Induction

1
Vehicle
5 ml/kg
PO
BID
Day 0: IRBP/

CFA, SC

2
MRX027
5 ml/kg

Day −14-End
Day 0: PTx, IP

PO: oral administration,

BID: twice daily,

SC: subcutaneous injection,

IP: intra-peritoneal injection,

IRBP: interphotoreceptor binding protein,

CFA: complete Freund's adjuvant,

PTx: Pertussis toxin

A positive control group was also tested using treatment with the drug cyclosporin A.

Readouts

Bodyweights.

From Day −14, animals are weighed three times a week. Animals with a bodyweight loss equal to or greater than 15% of their initial (Day 0) bodyweight on two consecutive occasions are culled.

Non-Specific Clinical Observations.

From Day −14 until the end of the experiment, animals are checked daily for non-specific clinical signs to include abnormal posture (hunched), abnormal coat condition (piloerection) and abnormal activity levels (reduced or increased activity).

Clinical Scores: Retinal Imaging by Topical Endoscopic Fundal Imaging (TEFI).

From Day −1 until the end of the experiment, animals are scored twice per week for clinical signs of uveitis. Retinal images are captured using TEFI in non-anaesthetized but restrained animals following pupil dilatation using Tropicamide 1% then Phenylephrine hydrochloride 2.5%. Retinal images are scores using the following system. The maximum cumulative score is 20.

Optic disc

Retinal tissue

Score
Inflammation
Retinal vessels
Infiltration
Structural damage

1
Minimal
1-4 mild cuffings
1-4 small lesions or
Retinal lesions or

1 linear lesion
atrophy involving ¼

to ¾ of retinal area

2
Mild
>4 mild cuffings or
5-10 small lesions
Panretinal atrophy

1-3 moderate
or 2-3 linear lesions
with multiple small

cuffings

lesions (scars) or ≤3

linear lesions (scars)

3
Moderate
>3 moderate
>10 small lesions or
Panretinal atrophy

cuffings
>3 linear lesions
with >3 linear lesions

or confluent lesions

(scars)

4
Severe
>1 severe cuffings
Linear lesion
Retinal detachment

confluent
with folding

5
Not visible (white-out or severe detachment)

Results

The results of the study are shown in FIGS. 1 and 2.

Clinical Scores: Retinal Imaging by Topical Endoscopic Fundal Imaging (TEFI).

TEFI scores data measured in the Control group from Day 0 until Day 28 were analyzed by Kruskal-Wallis test for non-parametric data followed by Dunn's post-test for multiple comparisons between experimental days.

IRBP administration induced a significant increase in the TEFI scores measured from Day 14 (p<0.01) and on Day 28 (p<0.0001) when compared to Day 0 in the Control group (FIG. 1).

TEFI scores measured in the experimental groups on Day 28 were analyzed using a one-way ANOVA. As expected, a significant decrease in the scores was observed in the positive control cyclosporine A group. There was also a statistically significant decrease in the scores for the MRX027-treated group (p<0.05), relative to the negative control (FIG. 73).

Conclusions.

Clinical scores determined by TEFI increased from Day 14, as expected in this model of IRBP-induced uveitis. By Day 28, a striking and statistically significant reduction in disease incidence and disease severity was observed in the MRX027-treated group, which was comparable to that seen for the positive control group. In particular, these data indicate that treatment with the strain MRX027 reduced retinal damage, optic disc inflammation and/or retinal tissue infiltration by inflammatory cells (see TEFI retinal image scoring system above). These data indicate the strain MRX027 may be useful for treating or preventing uveitis.

Example 2—Stability Testing

A composition described herein containing at least one bacterial strain described herein is stored in a sealed container at 25° C. or 4° C. and the container is placed in an atmosphere having 30%, 40%, 50%, 60%, 70%, 75%, 80%, 90% or 95% relative humidity. After 1 month, 2 months, 3 months, 6 months, 1 year, 1.5 years, 2 years, 2.5 years or 3 years, at least 50%, 60%, 70%, 80% or 90% of the bacterial strain shall remain as measured in colony forming units determined by standard protocols.

SEQUENCES

SEQ ID NO: 1 (Erysipelatoclostridium (Clostridium) ramosum 16S rRNA

gene, strain DSM 1402-X73440)

1 nnnnnnngag agtttgatcc tggctcagga tgaacgctgg cggcgtgcct aatacatgca

61 agtcgaacgc gagcacttgt gctcgagtgg cgaacgggtg agtaatacat aagtaacctg

121 ccctagacag ggggataact attggaaacg gatagctaag accgcatagg tacggacact

181 gcatggtgac cgtattaaaa gtgcctcaaa gcactggtag aggatggact tatggcgcat

241 tagctggttg gcggggtaac ggcccaccaa ggcgacgatg cgtagccgac ctgagagggt

301 gaccggccac actgggactg agacacggcc cagactccta cgggaggcag cagtagggaa

361 ttttcggcaa tgggggaaac cctgaccgag caacgccgcg tgaaggaaga aggttttcgg

421 attgtaaact tctgttataa agaagaacgg cggctacagg aaatggtagc cgagtgacgg

481 tactttattt tagaaagcca cggctaacta cgtgccagca gccgcggtaa tacgtaggtg

541 gcaagcgtta tccggaatta ttgggcgtaa agagggagca ggcggcagca agggtctgtg

601 gtgaaagcct gaagcttaac ttcagtaagc catagaaacc aggcagctag agtgcaggag

661 aggatcgtgg aattccatgt gtagcggtga aatgcgtaga tatatggagg aacaccagtg

721 gcgaaggcga cgatctggcc tgcaactgac gctcagtccc gaaagcgtgg ggagcaaata

781 ggattagata ccctagtagt ccacgccgta aacgatgagt actaagtgtt ggatgtcaaa

841 gttcagtgct gcagttaacg caataagtac tccgcctgag tagtacgttc gcaagaatga

901 aactcaaagg aattgacggg ggccgcacaa gcggtggagc atgtggttta attcgaagca

961 acgcgaagaa ccttaccagg tcttgacata ctcataaagg ctccagagat ggagagatag

1021 ctatatgaga tacaggtggt gcatggttgt cgtcagctcg tgtcgtgaga tgttgggtta

1081 agtcccgcaa cgagcgcaac ccttatcgtt agttaccatc attaagttgg ggactctagc

1141 gagactgcca gtgacaagct ggaggaaggc ggggatgacg tcaaatcatc atgcccctta

1201 tgacctgggc tacacacgtg ctacaatgga tggtgcagag ggaagcgaac cgcgaggtga

1261 agcaaaaccc ataaaaacca ttctcagttc ggattgtagt ctgcaactcg actacatgaa

1321 gttggaatcg ctagtaatcg cgaatcagca tgtcgcggtg aatacgttct cgggccttgt

1381 acacaccgcc cgtcacacca cgagagttga taacacccga agccggtggc ctaaccgcaa

1441 ggaaggagct gtctaaggtg ggattgatga ttggggtgaa gtcgtaacaa ggtatcccta

1501 cgggaacgtg cggctggatc acctcc

SEQ ID NO: 2 (Erysipelatoclostridium ramosum strain JCM 1298 16S ribosomal

RNA gene, partial sequence-NR_113243.1)

1 agagtttgat cctggctcag gatgaacgct ggcggcgtgc ctaatacatg caagtcgaac

61 gcgagcactt gtgctcgagt ggcgaacggg tgagtaatac ataagtaacc tgccctagac

121 agggggataa ctattggaaa cgatagctaa gaccgcatag gtacggacac tgcatggtga

181 ccgtattaaa agtgcctcaa agcactggta gaggatggac ttatggcgca ttagctggtt

241 ggcggggtaa cggcccacca aggcgacgat gcgtagccga cctgagaggg tgaccggcca

301 cactgggact gagacacggc ccagactcct acgggaggca gcagtaggga attttcggca

361 atgggggaaa ccctgaccga gcaacgccgc gtgaaggaag aaggttttcg gattgtaaac

421 ttctgttata aaggaagaac ggcggctaca ggaaatggta gccgagtgac ggtactttat

481 tagaaagcca cggctaacta cgtgccagca gccgcggtaa tacgtaggtg gcaagcgtta

541 tccggaatta ttgggcgtaa agagggagca ggcggcagca agggtctgtg gtgaaagcct

601 gaagcttaac ttcagtaagc catagaaacc aggcagctag agtgcaggag aggatcgtgg

661 aattccatgt gtagcggtga aatgcgtaga tatatggagg aacaccagtg gcgaaggcga

721 cgatctggcc tgcaactgac gctcagtccc gaaagcgtgg ggagcaaata ggattagata

781 ccctagtagt ccacgccgta aacgatgagt actaagtgtt ggatgtcaaa gttcagtgct

841 gcagttaacg caataagtac tccgcctgag tagtacgttc gcaagaatga aactcaaagg

901 aattgacggg ggcccgcaca agcggtggag catgtggttt aattcgaagc aacgcgaaga

961 accttaccag gtcttgacat actcataaag gctccagaga tggagagata gctatatgag

1021 atacaggtgg tgcatggttg tcgtcagctc gtgtcgtgag atgttgggtt aagtcccgca

1081 acgagcgcaa cccttatcgt tagttaccat cattaagttg gggactctag cgagactgcc

1141 agtgacaagc tggaggaagg cggggatgac gtcaaatcat catgcccctt atgacctggg

1201 ctacacacgt gctacaatgg atggtgcaga gggaagcgaa gccgcgaggt gaagcaaaac

1261 ccataaaacc attctcagtt cggattgtag tctgcaactc gactacatga agttggaatc

1321 gctagtaatc gcgaatcagc atgtcgcggt gaatacgttc tcgggccttg tacacaccgc

1381 ccgtcacacc acgagagttg ataacacccg aagccggtgg cctaaccgca aggaaggagc

1441 tgtctaaggt gggattgatg attggggtga agtcgtaaca aggtaacc

SEQ ID NO: 3 (consensus 16S rRNA sequence for Erysipelatoclostridium ramosum

strain MRX027)

TGCGGTTAGGCCACCGGCTTCGGGTGTTATCAACTCTCGTGGTGTGACGGGCGGTGT

GTACAAGGCCCGAGAACGTATTCACCGCGACATGCTGATTCGCGATTACTAGCGATT

CCAACTTCATGTAGTCGAGTTGCAGACTACAATCCGAACTGAGAATGGTTTTATGGG

TTTTGCTTCACCTCGCGGCTTCGCTTCCCTCTGCACCATCCATTGTAGCACGTGTGTA

GCCCAGGTCATAAGGGGCATGATGATTTGACGTCATCCCCGCCTTCCTCCAGCTTGT

CACTGGCAGTCTCGCTAGAGTCCCCAACTTAATGATGGTAACTAACGATAAGGGTTG

CGCTCGTTGCGGGACTTAACCCAACATCTCACGACACGAGCTGACGACAACCATGC

ACCACCTGTATCTCATATAGCTATCTCTCCATCTCTGGAGCCTTTATGAGTATGTCAA

GACCTGGTAAGGTTCTTCGCGTTGCTTCGAATTAAACCACATGCTCCACCGCTTGTG

CGGGCCCCCGTCAATTCCTTTGAGTTTCATTCTTGCGAACGTACTACTCAGGCGGAG

TACTTATTGCGTTAACTGCAGCACTGAACTTTGACATCCAACACTTAGTACTCATCGT

TTACGGCGTGGACTACTAGGGTATCTAATCCTATTTGCTCCCCACGCTTTCGGGACT

GAGCGTCAGTTGCAGGCCAGATCGTCGCCTTCGCCACTGGTGTTCCTCCATATATCT

ACGCATTTCACCGCTACACATGGAATTCCACGATCCTCTCCTGCACTCTAGCTGCCT

GGTTTCTATGGCTTACTGAAGTTAAGCTTCAGGCTTTCACCACAGACCCTTGCTGCC

GCCTGCTCCCTCTTTACGCCCAATAATTCCGGATAACGCTTGCCACCTACGTATTACC

GCGGCTGCTGGCACGTAGTTAGCCGTGGCTTTCTAATAAAGTACCGTCACTCGGCTA

CCATTTCCTGTAGCCGCCGTTCTTCCTTTATAACAGAAGTTTACAATCCGAAAACCTT

CTTCCTTCACGCGGCGTTGCTCGGTCAGGGTTTCCCCCATTGCCGAAAATTCCCTACT

GCTGCCTCCCGTAGGAGTCTGGGCCGTGTCTCAGTCCCAGTGTGGCCGGTCACCCTC

TCAGGTCGGCTACGCATCGTCGCCTTGGTGGGCCGTTACCCCGCCAACCAGCTAATG

CGCCATAAGTCCATCCTCTACCAGTGCTTTGAGGCACTTTTAATACGGTCACCATGC

AGTGTCCGTACCTATGCGGTCTTAGCTATCGTTTCCAATAGTTATCCCCCTGTCTAGG

GCAGGTTACTTATGTATTACTCACCCGTTCGCCACTCGAGCACAAGTGCTCGC

SEQ ID NO: 4 (genome sequence of Erysipelatoclostridium ramosum strain DSM 140)-

see electronic sequence listing.

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Claims

1. A pharmaceutical composition that comprises: from about 1×103 to about 1×1011 colony forming units (CFU)/g of a single therapeutically active bacterial strain, with respect to a total weight of said pharmaceutical composition, wherein said single therapeutically active bacterial strain is a bacterial strain of the species Erysipelatoclostridium ramosum, wherein the single therapeutically active bacterial strain is a spore-forming bacterial strain, and wherein said single therapeutically active bacterial strain is lyophilized; anda pharmaceutically acceptable excipient, diluent, or carrier.
2. The pharmaceutical composition of claim 1, wherein said pharmaceutically acceptable excipient, diluent, or carrier comprises a lyoprotectant.
3. The pharmaceutical composition of claim 1, wherein said pharmaceutical composition comprises from about 1×106 to about 1×1011 colony forming units (CFU)/g of said single therapeutically active bacteria strain with respect to said total weight of said pharmaceutical composition.
4. The pharmaceutical composition of claim 1, wherein said pharmaceutical composition is an oral formulation.
5. The pharmaceutical composition of claim 4, wherein said pharmaceutical composition is a solid pharmaceutical composition.
6. The pharmaceutical composition of claim 1, wherein said pharmaceutical composition is in the form of a tablet or a capsule.
7. The pharmaceutical composition of claim 1, wherein said pharmaceutical composition is an enteric formulation.
8. The pharmaceutical composition of claim 1, wherein said pharmaceutical composition further comprises a prebiotic compound selected from the group consisting of: a fructo-oligosaccharide, a short-chain fructo-oligosaccharide, inulin, an isomalt-oligosaccharide, a transgalacto-oligosaccharide, a pectin, a xylo-oligosaccharide, a chitosan-oligosaccharide, a beta-glucan, and arable gum modified starch, a polydextrose, a D-tagatose, an acacia fiber, a carob, an oat, and a citrus fiber.
9. The pharmaceutical composition of claim 1, wherein at least 50% of said single therapeutically active bacteria strain as measured by an amount of colony forming units (CFU) remains viable after about 1 year of storage when said pharmaceutical composition is stored in a closed container at 25° C. at 95% relative humidity.
10. A method of treating inflammation characterized by an elevated level of an IL-17 cytokine in a subject in need thereof, comprising administering to said subject a pharmaceutical composition that comprises: a therapeutically effective amount of a therapeutically active bacterial strain, wherein said therapeutically effective bacterial strain is a bacterial strain of the species Erysipelatoclostridium ramosum, and a pharmaceutically acceptable excipient, diluent, or carrier, wherein said therapeutically active bacterial strain is a spore-forming bacterial strain, wherein said therapeutically active bacterial strain is lyophilized; andwherein said administering is sufficient to reduce said elevated level of said IL-17 cytokine relative to a level of said IL-17 cytokine prior to said administering, thereby treating said inflammation.
11. The method of claim 10, wherein said inflammation is associated with uveitis, and wherein said treating comprises reducing retinal damage in uveitis.
12. The method of claim 10, further comprising administering an additional therapeutic agent to said subject.
13. The method of claim 10, wherein said pharmaceutical composition comprises from about 1×103 to about 1×1011 colony forming units (CFU)/g of said therapeutically active bacteria strain with respect to a total weight of said pharmaceutical composition.
14. The method of claim 10, wherein said administering is oral.
15. The method of claim 10, wherein said pharmaceutical composition is a solid pharmaceutical composition.
16. The method of claim 10, wherein said pharmaceutical composition is in the form of a tablet or a capsule.
17. The method of claim 10, wherein said pharmaceutical composition is an enteric formulation.

Priority Claims (1)

Number	Date	Country	Kind
1520631.1	Nov 2015	GB	national

CROSS REFERENCE

This application is a continuation of U.S. application Ser. No. 15/359,988, filed on Nov. 23, 2016, which claims priority to GB Application No. 1520631.1, filed on Nov. 23, 2015, each of which is herein incorporated by reference in its entirety.

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	20180250346 A1	Sep 2018	US

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Parent	15359988	Nov 2016	US
Child	15969543		US

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