Patent Application
20090047365
The present invention relates to a novel pharmaceutical composition, a kit, a method for treating cancer and/or a method for inhibiting angiogenesis, characterized by comprising a sulfonamide compound in combination with at least one substance selected from the group consisting of a platinum complex such as Oxaliplatin and Cisplatin, a DNA-topoisomerase I inhibitor such as CPT-11, an antimetabolite such as Gemcitabine and Methotrexate, a microtubule inhibitor such as Paclitaxel and an antibiotic such as Doxorubicin.
Examples of conventionally used chemotherapy drugs for cancer include alkylating agents such as cyclophosphamide, antimetabolites such as methotrexate and fluorouracil, antibiotics such as adriamycin, mitomycin, bleomycin, plant-derived taxol, vincristine and etoposide, and metal complexes such as cisplatin. All of them, however, have not been sufficient in anti-tumor effects, and thus there has been a strong need for development of a novel anti-tumor agent.
Recently, a sulfonamide compound has been reported as a useful anti-tumor agent(1-4). In particular,
The presence and the kind of effects resulting from combining these compounds, however, have not been reported so far.
Recently, methods were established for simultaneously detecting expression levels of multiple genes using various DNA microarrays. Thus, DNA microarrays have been used for wide-ranging purposes(5 and 6). In addition, several reports have been made about using DNA microarrays (In part, there is a macroarray using membrane filters) for examining changes in gene expressions upon use of anti-cancer drugs against tumor cells(7-9). These reports show that the analysis of gene expression variability is highly useful in comprehensively studying the characteristic comparison among a plurality of cell populations, the biological changes in cells caused by treatment of drug or the like at molecular level.
Furthermore, reports have also been made to the analysis of gene expression profiles of 60 types of cancer cell line panels from the US National Cancer Institute for reclassification of these cell lines and examination of their characteristics(10), and to discussion regarding relationship among the gene expression profiles of these 60 types of cancer cell line panels and sensitivity of each cell line to various anti-cancer drugs(11).
The present invention was achieved regarding the circumstances described above. The problem to be solved by the invention is to find a pharmaceutical composition and a kit having a remarkable anti-tumor activity and/or angiogenesis inhibiting activity, and a method for treating cancer and/or a method for inhibiting angiogenesis.
In order to solve the above problem, the present inventors have gone through keen examination, as a result of which combinational use of E7820 and Taxol (Paclitaxel), SN38 (active form of CPT-11), Methotrexate, Cisplatin, Gemcitabine or Doxorubicin was found to show a statistically significant (by combination index) synergistic antiproliferative effect in a vascular endothelial cell proliferation assay (in vitro). In addition, combinational use of E7820 and Paclitaxel, SN38 (active form of CPT-11), Cisplatin, Gemcitabine or Doxorubicinin was found to show a statistically significant (by combination index) synergistic effect on inhibition of lumen formation in a vascular endothelial cell lumen formation assay (in vitro). Combinational use of E7820 and Oxaliplatin or CPT-11 was found to show a statistically significant (by two-way ANOVA) synergistic anti-tumor effect in a subcutaneous transplant model (in vivo) of 5/human colon cancer cell line. Moreover, combinational use of E7820 and Gemcitabine was found to show a statistically significant (by two-way ANOVA) synergistic anti-tumor effect in a subcutaneous transplant model (in vivo) of human pancreas cancer cell line. Combinational use of E7820 and at least one compound selected from the group consisting of Oxaliplatin, CPT-11 and Gemcitabine showed a remarkable anti-tumor effect that cannot be seen with a compound selected from the group consisting of Oxaliplatin, CPT-11 and Gemcitabine alone.
In experiments using DNA microarrays and cancer cell line panels, genetic alteration patterns and antiproliferative activities of E7070 (which refers to “N-(3-chloro-1H-indole-7-yl)-4-sulfamoylbenzenesulfonamide” in this specification), E7820, LY186641, LY295501, LY573636, CQS and combinations thereof were found to show high correlation. In an assay for determining antiproliferative activity, a cancer cell line resistant to E7070 was found to show cross-resistance to E7820, LY186641, LY295501, LY-ASAP, LY573636 or CQS. From these results, the present inventors have found that E7070, E7820, LY186641, LY295501, LY-ASAP, LY573636, CQS and combinations thereof have the same or similar action mechanisms that result in the same or similar gene alterations and effects.
Accordingly, E7820, LY186641, LY295501, LY-ASAP, LY573636, CQS or a combination thereof is considered to show a good anti-tumor activity and/or angiogenesis inhibiting activity when used in combination with at least one compound selected from the group consisting of Oxaliplatin, Cisplatin, CPT-11, Gemcitabine, Methotrexate, Paclitaxel and Doxorubicin, and thus a combination of a sulfonamide compound, preferably E7820, LY186641, LY295501, LY-ASAP, LY573636, CQS or a combination thereof, and at least one substance selected from the group consisting of Oxaliplatin, Cisplatin, CPT-11, Gemcitabine, Methotrexate, Paclitaxel and Doxorubicin can be used as a useful pharmaceutical composition or a kit, which can be used for treatment of cancer and/or inhibition of angiogenesis.
Thus, the present invention relates to:
(1) A pharmaceutical composition comprising a sulfonamide compound in combination with and at least one substance selected from the group consisting of a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic, or a pharmacologically acceptable salt thereof or a solvate thereof.
(2) A kit comprising:
(a) at least one selected from the group consisting of a packaging container, an instruction and a package insert describing the combinational use of a sulfonamide compound and at least one substance selected from the group consisting of a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic, or a pharmacologically acceptable salt thereof or a solvate thereof, and
(b) a pharmaceutical composition comprising the sulfonamide compound.
(3) A kit comprising a set of a formulation comprising a sulfonamide compound and a formulation comprising at least one substance selected from the group consisting of a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic, or a pharmacologically acceptable salt thereof or a solvate thereof.
(4) Use of a sulfonamide compound for producing a pharmaceutical composition in combination with at least one substance selected from the group consisting of a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic, or a pharmacologically acceptable salt thereof or a solvate thereof.
(5) A method for treating cancer and/or a method for inhibiting angiogenesis comprising administering a sulfonamide compound and at least one substance selected from the group consisting of a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic, or a pharmacologically acceptable salt thereof or a solvate thereof to a patient.
(6) A pharmaceutical composition comprising a sulfonamide compound for administering to a patient in combination with at least one substance selected from the group consisting of a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic.
Examples of the sulfonamide compounds according to (1)-(6) above include N-(3-cyano-4-methyl-1H-indole-7-yl)-3-cyanobenzenesulfonamide, a pharmacologically acceptable salt thereof or a solvate thereof.
In addition, the sulfonamide compounds according to (1)-(6) above include at least one compound selected from the group consisting of:
a compound represented by General Formula (I)
[wherein, E represents —O—, —N(CH3)—, —CH2—, —CH2CH2— or —CH2O—, D represents —CH2— or —O—, R1a represents a hydrogen atom or a halogen atom, and R2′ represents a halogen atom or a trifluoromethyl group];
a compound represented by General Formula (II)
[wherein, J represents —O— or —NH—, R1b represents a hydrogen atom, a halogen atom, an optionally substituted C1-C6 alkyl group, an optionally substituted C1-C4 alkoxy group, an optionally substituted C1-C4 alkylthio group, —CF3, —OCF3, —SCF3, an optionally substituted C1-C4 alkoxy carbonyl group, a nitro group, an azido group, —O(SO2)CH3, —N(CH3)2, a hydroxyl group, a phenyl group, a substituted phenyl group, a pyridinyl group, a thienyl group, a furyl group, a quinolinyl group or a triazole group, R2b represents a hydrogen atom, a halogen atom, a cyano group, —CF3, an optionally substituted C1-C6 alkyl group, an optionally substituted C1-C4 alkoxy carbonyl group, an optionally substituted C1-C4 alkoxy group, an optionally substituted phenyl group or an optionally substituted quinolinyl group, R3b represents a hydrogen atom or an optionally substituted C1-C4 alkoxy group, R4b represents a hydrogen atom or an optionally substituted C1-C6 alkyl group (provided that at least one of R3b and R4b is a hydrogen atom), R5b represents a hydrogen atom, a halogen atom, an optionally substituted C1-C6 alkyl group, —CF3 or a nitro group, R6b represents a hydrogen atom, a halogen atom or an optionally substituted C1-C6 alkyl group (provided that when R6b is an optionally substituted C1-C6 alkyl group, R5b is a hydrogen atom and R7b is a halogen atom), R7b represents a halogen atom, an optionally substituted C1-C6 alkyl group or —CF3 (provided that when either R5b or R7b is an optionally substituted C1-C6 alkyl group or when R7b is a halogen atom or an optionally substituted C1-C6 alkyl group, either R5b or R6b is a hydrogen atom)];
a compound represented by Formula (III)
and
a compound represented by Formula (IV)
or a pharmacologically acceptable salt thereof, or a solvate thereof.
In (1)-(6) above, the group consisting of a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic may be a group consisting of Oxaliplatin, Cisplatin, CPT-11, Gemcitabine, Methotrexate, Paclitaxel and Doxorubicin.
The present invention provides a pharmaceutical composition and a kit that show a remarkable anti-tumor activity and/or angiogenesis inhibiting activity, and a method for treating cancer and/or a method for inhibiting angiogenesis.
More specifically, the present invention provides a pharmaceutical composition and a kit that show a remarkable anti-tumor activity and/or angiogenesis inhibiting activity and a method for treating cancer and/or a method for inhibiting angiogenesis, by combining a sulfonamide compound, that is, at least one compound selected from (A) E7820, (B) a compound represented by General Formula (I), preferably LY186641 or LY295501, (C) a compound represented by General Formula (II), preferably LY-ASAP, (D) LY573636 and (E) CQS, with at least one substance selected from (i) a platinum complex, preferably Oxaliplatin or Cisplatin, (ii) a DNA-topoisomerase I inhibitor, preferably CPT-11, (iii) an antimetabolite, preferably Gemcitabine or Methotrexate, (iv) a microtubule inhibitor, preferably Paclitaxel and (v) an antibiotic, preferably Doxorubicin. Thus, the pharmaceutical composition, the kit and the methods of the invention can be used for treating cancer or inhibiting angiogenesis.
Hereinafter, embodiments of the present invention will be described. The following embodiments are described for illustrating the present invention and they are not intended to limit the present invention. The present invention may be carried out in various embodiments as long as it does not depart from the scope of the invention.
The publications, laid-open patent publications, patent publications and other patent documents cited herein are incorporated herein by reference.
1. Sulfonamide Compound
A pharmaceutical composition and/or a kit and a method for treating cancer and/or a method for inhibiting angiogenesis of the present invention comprise a sulfonamide compound.
According to the present invention, the sulfonamide compound comprises a compound represented by the following General Formula (V).
The compound represented by Formula (V) is N-(3-cyano-4-methyl-1H-indole-7-yl)-3-cyanobenzenesulfonamide and may also be referred to as E7820.
E7820 can be produced according to a known method, for example, by a method described in International Publication No. 00/50395 (pamphlet) (WO00/50395).
According to the present invention, the sulfonamide compound comprises a compound represented by the following General Formula (I).
In General Formula (I) above, E represents —O—, —N(CH3)—, —CH2—, —CH2CH2— or —CH2O—, D represents —CH2— or —O—, R1a represents a hydrogen atom or a halogen atom (e.g., a fluorine atom, a chlorine atom, a bromine atom or an iodine atom), and R2a represents a halogen atom or a trifluoromethyl group.
The compound represented by General Formula (1) of the invention can be produced according to a known method, for example, by a method described in European Patent Publication No. 0222475A1 (specification) (EP0222475A1).
In General Formula (I), a preferable compound is LY186641 or LY295501.
LY186641 is N-[[(4-chlorophenyl)amino]carbonyl]-2,3-dihydro-1H-indene-5-sulfonamide, whose structural formula is represented by the following Formula (VI).
LY186641 can be produced according to a known method, for example, by a method described in European Patent Publication No. 0222475A1 (specification) (EP0222475A1).
According to the present invention, LY295501 is N—[[(3,4-dichlorophenyl)amino]carbonyl]-2,3-dihydrobenzofuran-5-sulfonamide, whose structural formula is represented by the following Formula (VII).
LY295501 can be produced according to a known method, for example, by those described in European Patent Publication No. 0222475A1 (specification) (EP0222475A1) and/or European Patent Publication No. 0555036A2 (specification) (EP0555036A2).
Furthermore, according to the present invention, the sulfonamide compound comprises a compound represented by the following General Formula (II).
In General Formula (II), J represents —O— or —NH—, R1b represents a hydrogen atom, a halogen atom, an optionally substituted C1-C6 alkyl group, an optionally substituted C1-C4 alkoxy group, an optionally substituted C1-C4 alkylthio group, —CF3, —OCF3, —SCF3, an optionally substituted C1-C4 alkoxy carbonyl group, a nitro group, an azido group, —O(SO2)CH3, —N(CH3)2, a hydroxyl group, a phenyl group, a substituted phenyl group, a pyridinyl group, a thienyl group, a furyl group, a quinolinyl group or a triazole group, R2b represents a hydrogen atom, a halogen atom, a cyano group, —CF3, an optionally substituted C1-C6 alkyl group, an optionally substituted C1-C4 alkoxy carbonyl group, an optionally substituted C1-C4 alkoxy group, an optionally substituted phenyl group or an optionally substituted quinolinyl group, R3b represents a hydrogen atom or an optionally substituted C1-C4 alkoxy group, R4b represents a hydrogen atom or an optionally substituted C1-C6 alkyl group (provided that at least one of R3b and R4b is a hydrogen atom), R5b refers to a hydrogen atom, a halogen atom, an optionally substituted C1-C6 alkyl group, —CF3 or a nitro group, R6b refers to a hydrogen atom, a halogen atom or an optionally substituted C1-C6 alkyl group (provided that when R6b is an optionally substituted C1-C6 alkyl group, R5b is a hydrogen atom and R7b is a halogen atom), R7b refers to a halogen atom, an optionally substituted C1-C6 alkyl group or —CF3 (provided that when either R5b or R7b is an optionally substituted C1-C6 alkyl group or when R7b is a halogen atom or an optionally substituted C1-C6 alkyl group, either R5b or R6b is a hydrogen atom).
In General Formula (II), a “halogen atom” is preferably a fluorine atom, a chlorine atom, a bromine atom or an iodine atom.
In General Formula (II), “C1-C6 alkyl group” refers to linear or branched alkyl group with a carbon number of 1-6, and includes, but not limited to, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group (amyl group), isopentyl group, neopentyl group, tert-pentyl group, 1-methylbutyl group, 2-methylbutyl group, 1,2-dimethylpropyl group, n-hexyl group, isohexyl group, 1-methylpentyl group, 2-methylpentyl group, 3-methylpentyl group, 1-ethylpropyl group, 1,1-dimethylbutyl group, 1,2-dimethylbutyl group, 2,2-dimethylbutyl group, 1,3-dimethylbutyl group, 2,3-dimethylbutyl group, 3,3-dimethylbutyl group, 1-ethylbutyl group, 2-ethylbutyl group, 1,1,2-trimethylpropyl group, 1,2,2-trimethylpropyl group, 1-ethyl-1-methylpropyl group and 1-ethyl-2-methylpropyl group. Examples of preferable groups among these include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group and n-hexyl group.
In General Formula (II), “C1-C4 alkoxy group” refers to alkoxy group with a carbon number of 1-4, and preferably includes, but not limited to, methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group and tert-butoxy group.
In General Formula (II), examples of alkyl group of “C1-C4 alkylthio group” include, but not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl and tert-butyl.
In General Formula (II), examples of “C1-C4 alkoxy carbonyl group” include, but not limited to, methoxy carbonyl group, ethoxy carbonyl group, n-propoxy carbonyl group, isopropoxy carbonyl group, n-butoxy carbonyl group, isobutoxy carbonyl group, sec-butoxy carbonyl group and tert-butoxy carbonyl group.
In General Formula (II), examples of substituents to be introduced include, but not limited to, substituents such as C1-C6 alkyl group (e.g., methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, etc.), C1-C4 alkoxy group (e.g., methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, etc.), amino group, hydroxyl group, a halogen atom (e.g., a fluorine atom, a chlorine atom, a bromine atom or an iodine atom) and silyl group.
The compound represented by General Formula (II) of the invention can be produced by a known method such as the method described in International Publication No. 02/098848 (pamphlet) (WO02/098848).
In General Formula (II), a preferable compound is LY-ASAP.
LY-ASAP is N-(2,4-dichlorobenzoyl)-4-chlorophenylsulfonamide, whose structural formula is represented by the following Formula (VIII).
LY-ASAP can be produced by a known method such as the method described in International Publication No. 02/098848 (pamphlet) (WO02/098848).
According to the present invention, an example of the sulfonamide compound includes LY573636. According to the invention, LY573636 is N-(2,4-dichlorobenzoyl)-5-bromothiophene-2-sulfonamide, whose structural formula is represented by the following Formula (III).
LY573636 is preferably a sodium salt.
LY573636 can be produced by a known method. For example, it can be produced in the same manner as the method described in International Publication No. 02/098848 (pamphlet) (WO02/098848) using commercially available 5-bromothiophene-2-sulfonyl chloride and 2,4-dichlorobenzoic acid.
LY573636 can be produced by a method described in Example 63 of International Publication No. 03/035629 (pamphlet) (WO03/035629).
According to the present invention, an example of the sulfonamide compound includes CQS. According to the present invention, CQS is 2-sulfanylamide-5-chloroquinoxaline, whose structural formula is represented by the following Formula (IV).
CQS can be produced according to a known method, for example, by the method according to (J. Am. Chem. Soc., 1947, 71, 6-10).
The sulfonamide compound may form a pharmacologically acceptable salt with acid or base. The sulfonamide compound of the invention also comprises these pharmacologically acceptable salts. Examples of salts formed with acids include inorganic acid salts such as hydrochloride salts, hydrobromide salts, sulfate salts and phosphate salts, and salts formed with organic acids such as formic acid, acetic acid, lactic acid, succinic acid, fumaric acid, maleic acid, citric acid, tartaric acid, benzoic acid, methanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid and trifluoroacetic acid. Examples of salts formed with bases include alkali metal salts such as sodium salt and potassium salt, alkaline earth metal salts such as calcium salt and magnesium salt, salts with organic bases such as trimethylamine, triethylamine, pyridine, picoline, dicyclohexylamine, N,N′-dibenzylethylenediamine, arginine and lysine (organic amine salts), and ammonium salts.
Furthermore, the sulfonamide compound may be an anhydride, and may form a solvate such as a hydrate. The solvate may be either a hydrate or a nonhydrate, preferably a hydrate. The solvent used may be water, alcohol (e.g., methanol, ethanol or n-propanol), dimethylformamide or the like.
If solvates and/or enantiomers of these compounds exist, the sulfonamide compound of the invention comprises these solvates and/or enantiomers. The sulfonamide compound of the invention also comprises sulfonamide compounds that undergo metabolism in vivo such as oxidation, reduction, hydrolysis and conjugation.
Moreover, the sulfonamide compound of the invention also comprises compounds that generate sulfonamide compounds by undergoing metabolism such as oxidation, reduction and hydrolysis in vivo.
2. Platinum Complex, DNA-Topoisomerase I Inhibitor, Antimetabolite, Microtubule Inhibitor and Antibiotic
A pharmaceutical composition and/or a kit and a method for treating cancer and/or a method for inhibiting angiogenesis of the invention comprise at least one substance selected from the group consisting of a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic.
(1) Platinum Complexes
According to the present invention, a platinum complex may be a complex having platinum as a central metal (platinum complex) and is not limited by the degree of bond between the central metal and the ligand, charge of the complex, increase in the number of central metals due to the bridged structure of the ligand, or the like. According to the present invention, the platinum complex may be a platinum formulation obtained by formulating a platinum complex. According to the present invention, the platinum complex may also be referred to as a platinum formulation.
According to the present invention, examples of the platinum complex include Oxaliplatin, Carboplatin, Cisplatin (CDDP), Lobaplatin, AR-726, Miriplatin, Picoplatin, PLD-147, Satraplatin, Thioplatin and Triplatin, preferably Oxaliplatin or Cisplatin, more preferably Oxaliplatin. The platinum complex may be produced by a known method or may be purchased.
According to the present invention, Oxaliplatin refers to oxalato (1R, 2R-cyclohexanediamine) platinum and is a compound represented by Formula (IX).
Oxaliplatin can be produced by a known method. Alternatively, Oxaliplatin is available by purchasing Eloxatin® from Sanofi Aventis.
According to the present invention, Carboplatin refers to cis-diammine(1,1-cyclobutanedicarboxylate) platinum.
According to the present invention, Carboplatin is available by purchasing Paraplatin (Bristol).
According to the present invention, Cisplatin (CDDP) refers to cis-diamminedichloroplatinum II and is a compound represented by Formula (XX).
According to the present invention, Cisplatin (CDDP) is available by purchasing Randa (Nippon Kayaku) or Briplatin (Bristol).
According to the present invention, Lobaplatin refers to [SP-4-3-(S),(trans)]-(1,2-cyclobutanedimethanamine-N,N′-)[2-hydroxypropanoate(2-)-O 1,O2]-platinum.
Lobaplatin may be produced by a known method (DE4115559).
According to the present invention, AR-726 refers to cis-bis-neodecanoate-trans-R, R-1,2-diamincyclohexane-Pt(II).
AR-726 may be produced by a known method.
According to the present invention, Miriplatin refers to (SP-4-2)-[(1R,2R)-cyclohexane-1,2-diamine-N,N′]bis(tetradecanoato-O)platinum.
Miriplatin may be produced by a known method (EP193936).
According to the present invention, Picoplatin refers to (SP-4-3)-amminedichloro(2-methylpyridine)platinum.
Picoplatin may be produced by a known method.
According to the present invention, PLD-147 refers to (OC-6-43)-bis(acetato)(1-adamantylamine)ammine-dichloro-platinum (IV).
PLD-147 may be produced by a known method (U.S. Pat. No. 6,503,943).
According to the present invention, Satraplatin refers to (OC-6-43)-bis(acetato)amminedichloro(cyclohexylamine)platinum.
Satraplatin may be produced by a known method (EP328274).
According to the present invention, Thioplatin refers to bis-(O-ethyldithiocarbamato)platinum (II).
Thioplatin may be produced by a known method (WO00/10543).
According to the present invention, Triplatin refers to trans-[bis[trans-diamminechloroplatinum(μ-hexane-1,6-diamine)]]diammineplatinum.
Triplatin may be produced by a known method (U.S. Pat. No. 5,744,497).
(2) DNA-Topoisomerase I Inhibitors
According to the present invention, a DNA-topoisomerase I inhibitor refers to a substance having an effect of inhibiting DNA-topoisomerase I.
According to the present invention, examples of a DNA-topoisomerase I inhibitor include CPT-11, Topotecan hydrochloride, Exatecan, Rubitecan, 9-amino-camptothecin, Lurtotecan dihydrochloride, Gimatecan and Edotecarin, preferably CPT-11.
A DNA-topoisomerase I inhibitor may be produced by a known method or may be purchased.
According to the present invention, CPT-11 refers to irinotecan hydrochloride trihydrate ([1,4′-Bipiperidine]-1′-carboxylic acid (S)-4,11-diethyl-3,4,12,14-tetrahydro-4-hydroxy-3,14-dioxo-1H-pyrano-[3′,4′:6,7]-indoli zino[1,2-b]quinolin-9-yl ester Hydrochloride trihydrate) and is a compound represented by Formula (X).
CPT-11 may be produced by a known method. CPT-11 is also available by purchasing Topotecin® from Daiichi Pharm.
According to the present invention, SN38, i.e., an active form of CPT-11, may be used as the DNA-topoisomerase I inhibitor. SN38 refers to 7-ethyl-10-hydro-(20)S-Camptothecin. SN38 is available by purchasing from ABATRA.
According to the present invention, Topotecan hydrochloride refers to (4S)-10-[(dimethylamino)methyl]-4-ethyl-4,9-dihydroxy-1H-pyrano[3′,4′:6,7]indolizino[1,2-b]quinoline-3,14 (4H,12H)-dione hydrochloride, and is a compound represented by Formula (XI).
Topotecan hydrochloride may be produced by a known method (U.S. Pat. No. 5,004,758 specification (U.S. Pat. No. 5,004,758)). Topotecan hydrochloride is available by purchasing Hycamtin® from Nippon Kayaku.
According to the present invention, Exatecan refers to (1S,9S)-1-amino-9-ethyl-5-fluoro-1,2,3,9,12,15-hexahydro-9-hydroxy-4-methyl-10H, 13H-benzo[de]pyrano[3′,4′:6,7]indolizino[1,2-b]quinoline-10,13-dione and is a compound represented by Formula (XII).
Exatecan may be produced by a known method (Japanese Laid-Open Patent Publication No. 05-59061 (JP93-59061)).
According to the present invention, Rubitecan refers to (4S)-ethyl-4-hydroxy-10-nitro-1, 12-dihydro-14H-pyrano[3′,4′:6,7]-indolizino[1,2-b]quinoline-3,14(4H, 12H)-dione and is a compound represented by Formula (XIII).
Rubitecan may be produced by a known method (Journal of Medicinal Chemistry (1986), 29(11), 2358-63 and Japanese Laid-Open Patent Publication No. 59-051288).
According to the present invention, 9-amino-camptothecin refers to (4S)-ethyl-4-hydroxy-10-amino-1,12-dihydro-14H-pyrano[3′,4′:6,7]-indolizino[1,2-b]qui noline-3, 14(4H,12H)-dione, and is a compound represented by Formula (XIV).
9-amino-camptothecin may be produced by a known method (Japanese Laid-Open Patent Publication No. 59-051289).
According to the present invention, Lurtotecan dihydrochloride refers to 7-(4-methylpiperazinomethylene)-10,11-ethylenedioxy-20(s)-camptothecin dihydrochloride and is a compound represented by Formula (XV)
Lurtotecan dihydrochloride may be produced by a known method (WO95/29919).
According to the present invention, Gimatecan refers to (4S)-11-[(E)-[[1,1-dimethylethoxy]imino]methyl]-4-ethyl-4-hydroxy-1, 12-dihydro-14H-pyrano[3′,4′:6,7]-indolizino[1,2-b]quinoline-3,14(4H)-dione and is a compound represented by Formula (XVI).
Gimatecan may be produced by a known method (WO00/053607).
According to the present invention, Edotecarin refers to 12-β-D-glucopyranosyl-2,10-dihydroxy-6-[[2-hydroxy-1-(hydroxymethyl)ethyl]amino]-1 2,13-dihydro-6H-indolo[2,3-a]pyrrole[3,4-c]carbazole-5,7-dione, and is a compound represented by Formula (XVII).
Edotecarin may be produced by a known method (WO95/30682).
(3) Antimetabolites
According to the present invention, an antimetabolite is a compound that has a similar structure to a substance necessary for a cell metabolism such as nucleic acid synthesis or proteosynthesis. Accordingly, it inhibits the cell metabolism by this structural similarity.
An example of the antimetabolite of the invention includes a Cytidine derivative, specific examples being Gemcitabine, Cytarabine (araC), Enocitabine, Cytarabine ocfosfate, 5-azacytidine and CNDAC, preferably Gemcitabine.
In addition, an example of the antimetabolite of the invention includes an antifolate drug, a specific example being Methotrexate. An antifolate drug inhibits nucleic acid synthesis by inhibiting dihydrofolate reductase.
An antimetabolite may be produced by a known method or it can be purchased.
According to the present invention, Gemcitabine refers to gemcitabine hydrochloride (2′-deoxy-2′,2′-difluoro-cytidine hydrochloride) and is a compound represented by Formula (XVIII).
Gemcitabine may be produced by a known method. Gemcitabine is also available by purchasing GEMZAR® from Eli Lilly Japan.
Cytarabine (araC) is available by purchasing Cylocide (Nippon Shinyaku) or Cylocide N (Nippon Shinyaku).
Enocitabine (BH-AC) is available by purchasing Sunrabin (Asahi Kasei Pharma).
Cytarabine ocfosfate (SPAC) is available by purchasing Starasid (Nippon Kayaku).
5-azacytidine may be produced by a known method and is available by purchasing from Nacalai Tesque, Inc.
According to the present invention, CNDAC refers to 1-(2-C-cyano-2-deoxy-β-D-arabino-pentofuranosyl)-N-palmitoylcytosine and is a compound represented by Formula (XIX).
CNDAC may be produced by a known method (EP536939).
According to the present invention, Methotrexate refers to N-{4-[N-(2,4-diaminopteridin-6-ylmethyl)-N-methylamino]benzoyl}-L-glutamic acid and is a compound represented by Formula (XXI).
According to the present invention, Methotrexate is available by purchasing Methotrexate® or Rheumatrex® from Wyeth-Takeda.
(4) Microtubule Inhibitors
A microtubule inhibitor of the invention refers to a substance having an effect of inhibiting the microtubule functions such as spindle forming function upon cell division and transporting function. For example, a microtubule inhibitor shows an anti-tumor effect by acting on microtubules in cells associated with highly active cell division, nerve cells or the like.
Examples of the microtubule inhibitor of the invention include Paclitaxel and Docetaxel, preferably Paclitaxel.
The microtubule inhibitor may be produced by a known method or may be purchased.
According to the present invention, Paclitaxel refers to (−)-(1S, 2R, 3S, 4S, 5R, 7S, 8S, 10R, 13S)-4,10-diacetoxy-2-benzoyloxy-5,20-epoxy, 1,7-dihydroxy-9-oxotax-11-en-13-yl (2S,3S)-3-benzoylamino-2-hydroxy-3-phenylpropionate and is a compound represented by Formula (XXII).
Paclitaxel is available by purchasing Taxol from Bristol.
Docetaxel is available by purchasing Taxotere® (Sanofi Aventis).
(5) Antibiotics
Preferably, an antibiotic of the present invention is an anti-tumoral antibiotic. An anti-tumoral antibiotic shows an anti-tumor effect by effecting DNA synthesis inhibition, DNA strand breakage or the like in a tumor cell.
According to the present invention, examples of an antibiotic include Doxorubicin (Adriamycin), Daunorubicin, Pirarubicin, Epirubicin, Idarubicin, Aclarubicin, Amrubicin, Mitoxantrone, preferably Doxorubicin.
An antibiotic may be produced by a known method or may be purchased.
According to the present invention, Doxorubicin refers to 10-[(3-amino-2,3,6-trideoxy-α-L-lyxo-hexopyranosyl)oxy]-7,8,9,10-tetrahydro-6,8,11-tri hydroxy-8-(hydroxyacetyl)-1-methoxy-(8S-cis)-5,12-naphthacenedione, and is a compound represented by Formula (XXIII).
Doxorubicin is available by purchasing Adriacin® (Kyowa Hakko).
Daunorubicin is available by purchasing Daunomycin® (Meiji Seika).
Piparubicin is available by purchasing Therarubicin® (Meiji Seika) or Pinorubin® (Mercian-Nippon Kayaku).
Epirubicin is available by purchasing Farmorubicin® (Pfizer-Kyowa Hakko).
Idarubicin is available by purchasing Idamycin® (Pfizer).
Aclarubicin is available by purchasing Aclacinon® (Mercian-Yamanouchi).
Amurubicin is available by purchasing Calsed® (Sumitomo Pharma).
Mitoxantrone is available by purchasing Novantron® (Wyeth-Takeda).
(6) Salts and solvates
A platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic may form pharmacologically acceptable salts with acids or bases. The compounds in (1) to (5) mentioned above may form pharmacologically acceptable salts that are different from those exemplified in (1) to (5) above. The above substances of the invention also comprise their pharmacologically acceptable salts. Examples of salts formed with acids include inorganic acid salts such as hydrochloride salts, hydrobromide salts, sulfate salts and phosphate salts, and salts formed with organic acids such as formic acid, acetic acid, lactic acid, succinic acid, fumaric acid, maleic acid, citric acid, tartaric acid, benzoic acid, methanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid and trifluoroacetic acid. Examples of salts formed with bases include alkali metal salts such as sodium salt and potassium salt, alkaline earth metal salts such as calcium salt and magnesium salt, and salts formed with organic bases such as trimethylamine, triethylamine, pyridine, picoline, dicyclohexylamine and N,N′-dibenzylethylenediamine, arginine, lysine (organic amine salts), and ammonium salts.
The platinum complex, the DNA-topoisomerase I inhibitor, the antimetabolite, the microtubule inhibitor and the antibiotic may be an anhydride or may form a solvate such as a hydrate. The solvate may be either a hydrate or a nonhydrate, preferably a hydrate. The solvent may use water, alcohol (e.g., methanol, ethanol or n-propanol), dimethylformamide or the like.
If solvates and/or enantiomers of the above substances exist, these solvates and/or enantiomers are also comprised in the above substances of the invention. The substances of the invention also comprise at least one selected from a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic that undergo metabolism in vivo such as oxidation, reduction, hydrolysis and conjugation. Moreover, the above substances of the invention also comprise substances that generate at least one selected from a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic by undergoing metabolism in vivo such as oxidation, reduction and hydrolysis.
3. Pharmaceutical Composition, Kit, Method for Treating Cancer and Method for Inhibiting Angiogenesis
The present invention relates to a pharmaceutical composition, a kit, a method for treating cancer and a method for inhibiting angiogenesis, characterized by comprising a sulfonamide compound in combination with at least one substance selected from (i) a platinum complex, (ii) a DNA-topoisomerase I inhibitor, (iii) an antimetabolite, (iv) a microtubule inhibitor and (v) an antibiotic.
According to the present invention, a sulfonamide compound is as described in “I. Sulfonamide compound”. For example, the sulfonamide compound is at least one compound selected from: (A) E7820 (Formula (V)); (B) a compound represented by General Formula (I), preferably LY186641 or LY295501; (C) a compound represented by General Formula (II), preferably LY-ASAP; (D) LY573636 (Formula (III)) and (E) CQS (Formula (IV)). More preferably, the sulfonamide compound is at least one compound selected from LY295501 and LY573636 and particularly preferably sodium salt of LY573636.
Alternatively, a sulfonamide compound of the present invention is preferably E7820.
According to the present invention, a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic are as described in “2. Platinum complex, DNA-topoisomerase I inhibitor, Antimetabolite, Microtubule inhibitor and Antibiotic”. (i) The platinum complex is preferably Oxaliplatin, (ii) the DNA-topoisomerase I inhibitor is preferably CPT-11, and (iii) the antimetabolite is preferably Gemcitabine. Alternatively, according to the present invention, (i) the platinum complex is preferably Cisplatin, (iii) the antimetabolite is preferably Methotrexate, (iv) the microtubule inhibitor is preferably Paclitaxel and (v) the antibiotic is preferably Doxorubicin.
According to the present invention, the sulfonamide compound and the substances of (i) to (v) above also comprise pharmacologically acceptable salts thereof, or solvates such as hydrates thereof.
The pharmaceutical composition of the invention comprising a sulfonamide compound in combination with at least one substance selected from (i) a platinum complex, (ii) a DNA-topoisomerase I inhibitor, (iii) an antimetabolite, (iv) a microtubule inhibitor and (v) an antibiotic. The pharmaceutical composition of the invention is useful for treating cancer and/or inhibiting angiogenesis.
According to the present invention, the term “in combination with” refers to a combination of compounds for combinational use, and includes both mode in which separate substances are administered in combination and as a mixture.
The pharmaceutical composition of the invention is also provided in another embodiment of a pharmaceutical composition comprising a sulfonamide compound, which is administered to a patient in combination with at least one substance selected from (i) a platinum complex, (ii) a DNA-topoisomerase I inhibitor, (iii) an antimetabolite, (iv) a microtubule inhibitor and (v) an antibiotic. The sulfonamide compound and at least one substance selected from (i) a platinum complex, (ii) a DNA-topoisomerase I inhibitor, (iii) an antimetabolite, (iv) a microtubule inhibitor and (v) an antibiotic may be administered either simultaneously or separately. The term “simultaneous” refers to administrations at the same timing in a single administration schedule. In this case, it is not necessary to use completely the same hour and minute for administration. The term “separately” refers to administrations at different timings in a single administration schedule.
The kit of the invention comprises a set of a formulation comprising a sulfonamide compound and a formulation comprising at least one substance selected from the group consisting of (i) a platinum complex, (ii) a DNA-topoisomerase I inhibitor, (iii) an antimetabolite, (iv) a microtubule inhibitor and (v) an antibiotic. The formulations comprised in the kit of the invention are not limited to a particular form as long as they comprise a sulfonamide compound or at least one of the substances (i) to (v) above. The kit of the invention is useful for treating cancer and/or inhibiting angiogenesis.
In the kit of the invention, the formulation comprising a sulfonamide compound and the formulation comprising at least one of the substances (i) to (v) above may be mixed together or separately accommodated in a single package. They may be administered simultaneously or one may be administered preceding the other.
The pharmaceutical composition and/or the kit and the method for treating cancer and/or a method for inhibiting angiogenesis of the invention may be further combined with one or more additional anti-cancer drugs. The additional anti-cancer drugs are not particularly limited as long as they are formulations having an anti-tumor activity. Examples of the additional anti-cancer drug include 5-fluorouracil (5-FU), calcium folinate (Leucovorin), docetaxel (Taxotere®), gefitinib (Iressa®), erlotinib (Tarceva®, cetuximab (Erbitux®) and bevacizumab (Avastin®). Particularly preferable additional anti-cancer drugs are 5-fluorouracil, calcium folinate, gefitinib, erlotinib, cetuximab or bevacizumab when the type of cancer to be treated by the drug is colon cancer, and gefitinib, erlotinib, cetuximab or bevacizumab for pancreas cancer.
More examples of particularly preferable combinations of the compounds according to the invention are shown in Tables 1 and 2 for the cases of treating colon cancer and pancreas cancer by the therapeutic drug, respectively.
Table 1 shows preferable combinations of the invention where the type of cancer to be treated by the therapeutic drug for cancer is colon cancer. In the table, LV represents calcium folinate.
Table 2 shows preferable combinations of the invention where the type of cancer to be treated by the therapeutic drug for cancer is pancreas cancer.
The pharmaceutical composition and/or the kit of the invention can be used as a therapeutic drug for cancer or as an angiogenesis inhibitor.
Treatments according to the present invention comprise symptomatic relief of the disease, progression delay of symptoms of the disease, elimination of the symptoms of the disease, improvement of prognosis of the disease, and prevention of recurrence of the disease.
A therapeutic drug for cancer according to the invention comprises those that contain an anti-tumor agent, a drug for improving prognosis of cancer, a drug for preventing cancer recurrence, an antimetastatic drug or the like.
The effect of cancer treatment can be confirmed by observation of X-ray pictures, CT or the like, histopathologic diagnosis by biopsy, or tumor marker value.
The pharmaceutical composition and/or the kit of the invention can be administered to mammals (e.g., human, rat, rabbit, sheep, pig, cattle, cat, dog and monkey).
Examples of the types of cancers targeted by the therapeutic drug for cancer include but not limited to at least one selected from the group consisting of brain tumor, cervical cancer, esophageal cancer, tongue cancer, lung cancer, breast cancer, pancreas cancer, gastric cancer, small intestinal and duodenal cancer, colon cancer (colon cancer and rectal cancer), bladder cancer, renal cancer, liver cancer, prostate cancer, uterin cancer, ovarian cancer, thyroid grand cancer, gallbladder cancer, pharyngeal cancer, sarcoma (e.g., osteosarcoma, chondrosarcoma, Kaposi's sarcoma, myosarcoma, angiosarcoma, fibrosarcoma, etc.), leukemia (e.g., chronic myelocytic leukemia (CML), acute myelocytic leukemia (AML), chronic lymphocytic leukemia (CLL), acute lymphocytic leukemia (ALL), lymphoma, multiple myeloma (MM), etc.) and melanoma. Preferably, the type of cancer targeted by the therapeutic drug for cancer is at least one selected from the group consisting of colon cancer and pancreas cancer.
The pharmaceutical composition and/or the kit of the invention may be administered orally or parenterally.
When the pharmaceutical composition and/or kit of the invention is used, the given dose of the sulfonamide compound differs depending on the degree of the symptom, age, sex, weight and sensitivity difference of the patient, administration mode, administration period, administration interval, and nature, prescription and type of the pharmaceutical formulation and the type of the active ingredient. Usually, but without limitation, the dose of the sulfonamide compound is 10-6000 mg/day, preferably 50-4000 mg/day, more preferably 50-2000 mg/day for an adult (weight 60 Kg), which may be administered once to three times a day.
When using the pharmaceutical composition and/or the kit of the invention, the given dose of the at least one substance selected from the group consisting of (i) a platinum complex, preferably Oxaliplatin or Cisplatin, (ii) a DNA-topoisomerase I inhibitor, preferably CPT-11, (iii) an antimetabolite, preferably Gemcitabine or Methotrexate, (iv) a microtubule inhibitor, preferably Paclitaxel and (v) an antibiotic, preferably Doxorubicin, is usually, but not particularly limited to, 10-6000 mg/day, preferably 50-4000 mg/day, more preferably 50-2000 mg/day for an adult, which may be administered once to three times a day.
The amount of the sulfonamide compound used is not particularly limited, and differs depending on the individual combination with the at least one substance selected from the group consisting of (i) a platinum complex, preferably Oxaliplatin or Cisplatin, (ii) a DNA-topoisomerase I inhibitor, preferably CPT-11, (iii) an antimetabolite, preferably Gemcitabine or Methotrexate, (iv) a microtubule inhibitor, preferably Paclitaxel and (v) an antibiotic, preferably Doxorubicin. For example, the amount of the sulfonamide compound is about 0.01-100 times (weight ratio), more preferably about 0.1-10 times (weight ratio) of the amount of the at least one substance selected from (i) to (v).
The pharmaceutical composition of the invention may be made into various dosage forms, for example, into solid oral formulations or parenteral formulations such as injection, suppository, ointment and skin patch.
Furthermore, the sulfonamide compound and the at least one substance selected from the group consisting of (i) a platinum complex, (ii) a DNA-topoisomerase I inhibitor, (iii) an antimetabolite, (iv) a microtubule inhibitor and (v) an antibiotic contained in the kit of the invention may individually be made into various dosage forms, for example, into solid oral formulations or parenteral formulations such as injection, suppository, ointment and skin patch.
In order to prepare a solid oral formulation, an excipient, and if necessary, a binder, disintegrant, lubricant, colorant, a flavoring agent or the like may be added to a principal agent, and then made into a tablet, a coated tablet, granule, subtle granule, powder, a capsule or the like according to a conventional method. In addition, a non-solid oral formulation such as a syrup agent can also be prepared appropriately.
For example, lactose, cornstarch, sucrose, glucose, sorbit, crystalline cellulose, silicon dioxide or the like may be used as the excipient; for example, polyvinyl alcohol, ethyl cellulose, methyl cellulose, gum arabic, hydroxypropyl cellulose, hydroxypropylmethyl cellulose or the like may be used as the binder; for example, magnesium stearate, talc, silica or the like may be used as the lubricant; those that are allowed to be added to pharmaceutical preparations may be used as the colorant; and for example, cocoa powder, menthol, aromatic acid, peppermint oil, camphor, cinnamon powder or the like may be used as the flavoring agent. Of course, if necessary, these tablets and granule may be coated appropriately with sugar coating, gelatin coating or else.
When an injection is to be prepared, if necessary, the principal agent may be added with a pH adjuster, a buffer, a suspending agent, a solubilizing aid, a stabilizer, an isotonizing agent, a preservative or the like, and may be made into an intravenously, subcutaneously or intramuscularly injection or an intravenous dorip injection according to a conventional method. In this case, if necessary, it is also prepared a lyophilized form by a conventional technique.
Examples of the suspending agent may include methyl cellulose, Polysorbate 80, hydroxyethyl cellulose, gum arabic, powdered tragacanth, sodium carboxy methyl cellulose and polyoxyethylene sorbitan monolaurate.
Examples of the solubilizing aid may include polyoxyethylene hydrogenated castor oil, Polysorbate 80, nicotine acid amide, polyoxyethylene sorbitan monolaurate, macrogol, and ethyl ester of castor oil fatty acid.
Examples of the stabilizer may include sodium sulfite and sodium metasulfite; examples of the preservative may include methyl parahydroxybenzoate, ethyl parahydroxybenzoate, sorbic acid, phenol, cresol and chlorocresol.
Besides the sulfonamide compound and the at least one substance selected from the group consisting of (i) a platinum complex, (ii) a DNA-topoisomerase I inhibitor, (iii) an antimetabolite, (iv) a microtubule inhibitor and (v) an antibiotic, the pharmaceutical composition and/or the kit of the invention can also comprise a packaging container, an instruction, a package insert or the like. The packaging container, the instruction, the package insert or the like may include description of combinations for combinational use of the compound, and usage and dosage in the case of administering separate substances in combination or in the case of administering them in the form of a mixture. The usage and dosage may be described referring to the related description above.
The kit of the invention may also comprise: (a) at least one selected from the group consisting of a packaging container, an instruction and a package insert describing combinational use of the sulfonamide compound and the at least one substance selected from the group comprising of (i) a platinum complex, (ii) a DNA-topoisomerase I inhibitor, (iii) an antimetabolite, (iv) a microtubule inhibitor and (v) an antibiotic; and (b) a pharmaceutical composition comprising the sulfonamide compound. The kit is useful for treating cancer and/or for inhibiting angiogenesis. The pharmaceutical composition comprising the sulfonamide compound is useful for treating cancer and/or for inhibiting angiogenesis. The packaging container, the instruction, the package insert or the like may include the description of combinations for combinational use of the sulfonamide compound and the at least one substance selected from (i) to (v) above, and usage and dosage for combinational use in the case of administering separate substances in combination or in the case of administering them in the form of a mixture. The usage and dosage may be determined by referring to the description of Pharmaceutical composition/Kit above.
The present invention also comprises use of a sulfonamide compound for producing a pharmaceutical composition in combination with at least one substance selected from the group consisting of (i) a platinum complex, (ii) a DNA-topoisomerase I inhibitor, (iii) an antimetabolite, (iv) a microtubule inhibitor and (v) an antibiotic. According to the use of the invention, the pharmaceutical composition is useful for treating cancer and/or for inhibiting angiogenesis.
The present invention also comprises a method for treating cancer and/or a method for inhibiting angiogenesis comprising simultaneously or separately administering a sulfonamide compound and at least one substance selected from the group consisting of (i) a platinum complex, (ii) a DNA-topoisomerase I inhibitor, (iii) an antimetabolite, (iv) a microtubule inhibitor and (v) an antibiotic to a patient. According to the method of the invention for treating cancer and/or inhibiting angiogenesis, the route and the method for administering the sulfonamide compound and the at least one substance selected from (i) to (v) above are not particularly limited but reference may be made to the description of the pharmaceutical composition of the invention above.
Hereinafter, the present invention will be described by way of specific examples, although the present invention is not limited thereto.
Human umbilical vein endothelial cells were suspended in bullet kit EGM-2 (Cambrex) as a culture medium to 1×104 cells/ml, and 100 μl each of this solution was added to each well of a 96 well plate for cultivation in a 5% carbon dioxide incubator at 37° C. On the following day, a solution containing E7820, a solution containing an anti-cancer drug for combinational use and a solution containing both compounds, i.e., E7820 and the anti-cancer drug, were each diluted in the culture medium. These diluted solutions were added to the cultured wells for 100 μl/well for further cultivation.
Three days later, 10 μl of Cell Counting Kit-8 solution (Cell Counting Kit-8, Wako Pure Chemical Industries) was added, cultured for 2-3 hours at 37° C., and absorbance at 450 nm was determined with a plate reader (Corona Electric Co., Ltd.). The effect of the combinational use was calculated according to the formula of Chou et al (Adv. Enzyme Regul., 22, 27-55, 1984).
As a result, the combination of E7820 and Paclitaxel, SN38 (active form of CPT-11), Methotrexate, Cisplatin, Gemcitabine or Doxorubicin showed stronger antiproliferative effect than that obtained with E7820, Paclitaxel, SN38 (active form of CPT-11), Methotrexate, Cisplatin, Gemcitabine or Doxorubicin alone. Since the combination index (CI) obtained with combinational use of E7820 and Paclitaxel, SN38 (active form of CPT-11), Methotrexate, Cisplatin, Gemcitabine or Doxorubicin was I or less, E7820 was found to indicate a synergistic antiproliferative effect by combinational use with Paclitaxel, SN38 (active form of CPT-11), Methotrexate, Cisplatin, Gemcitabine or Doxorubicin (Table 3). This effect was remarkable as compared to an effect observed with general combinational use, which was unpredictable by those skilled in the art.
Table 3 shows the synergistic antiproliferative effect by E7820 and anti-cancer drugs in vascular endothelial cell proliferation assay (in vitro).
Four-hundred μl of type I collagen gel (Nitta Gelatin) was dispensed in a 24-well plate (FALCON) and left in a CO2 incubator at 37° C. for 40 minute for gelatinization. A serum-free medium (Human endothelial-SFM Basal Growth Medium, Invitrogen) containing 20 ng/ml EGF (GIBCO BRL) was prepared. Two-hundred μl of this solution was dispensed in the wells containing type I collagen gel. Human umbilical vein endothelial cell (HUVEC) line was suspended in a serum-free medium (Human endothelial-SFM Basal Growth Medium, GIBCO BRL) to prepare 5×105 cells/ml cell suspension. Two-hundred μl of this suspension was seeded on the wells containing the type I collagen gel and the serum-free medium and cultured overnight.
On the following day, the wells were overlaid with 400 μl of type I collagen gel and left in a CO2 incubator at 37° C. for 3 hours for gelatinization. Then, the serum-free media (containing 10 ng/ml EGF and 20 ng/ml VEGF (Genzyme Techne Corp.)) containing E7820 alone, containing an anti-cancer drug alone and containing both E7820 and the anti-cancer drug for combinational use were added for 1.5 ml each and further cultured in a CO2 incubator at 37° C. for 3 days.
After the cultivation, 400 μl of 3.3 mg/ml MTT (SIGMA) solution was dispensed in the wells and reacted in a CO2 incubator at 37° C. for 3 hours for the cells to develop color. Images of lumens formed by HUVEC were captured (M-3204C, OLYMPUS) under a microscope (SZX12, OLYMPUS). The captured images were subjected to image analysis software Mac SCOPE 2.56 (MITANI) to determine the lengths of the lumens to quantify lumen formulation by HUVEC. The effect of the combinational use was calculated according to the formula of Chou et al (Adv. Enzyme Regul., 22, 27-55, 1984).
As a result, the combination of E7820 and Paclitaxel, SN38 (active form of CPT-11), Cisplatin, Gemcitabine or Doxorubicin showed stronger lumen formation inhibitory effect than that obtained with E7820, Paclitaxel, SN38 (active form of CPT-11), Cisplatin, Gemcitabine or Doxorubicin alone. Since the combination index (CI) obtained with combinational use of E7820 and Paclitaxel, SN38 (active form of CPT-11), Cisplatin, Gemcitabine or Doxorubicin was 1 or less, E7820 was found to indicate a synergistic lumen formation inhibitory effect by combinational use with Paclitaxel, SN38 (active form of CPT-11), Cisplatin, Gemcitabine or Doxorubicin (Table 4). This effect was remarkable as compared to an effect observed with general combinational use, which was unpredictable by those skilled in the art.
Table 4 shows the synergistic effect of E7820 and anti-cancer drugs on lumen formation inhibition in vascular endothelial cells.
From these results, by combining E7820 with at least one substance selected from the group consisting of a platinum complex, a DNA-topoisomerase I inhibitor, an antimetabolite, a microtubule inhibitor and an antibiotic, a pharmaceutical composition and a kit showing a remarkable angiogenesis inhibition activity and a method for inhibiting angiogenesis are provided. Thus, the pharmaceutical composition, the kit and the method of the invention can be used for treating cancer and for inhibiting angiogenesis.
Human colon cancer cell line Colo320DM (obtained from Dainippon Pharmaceutical) was cultured in RPMI1640 (containing 10% FBS) in a 5% carbon dioxide incubator at 37° C. to about 80% confluence, and the cells were collected with trypsin-EDTA. Using a phosphate buffer containing 50% matrigel, 7.5×107 cells/mL suspension was prepared, and 0.1 mL each of the resulting cell suspension was subcutaneously transplanted to a nude mouse at the side of its body. Six days after the transplantation, administrations of E7820 (50 mg/kg, twice a day, for two weeks, oral administration) and Oxaliplatin (Eloxatin®, Sanofi Aventis) (10 mg/kg, once in four days, total of three times, intravenous administration) alone or in combination were initiated. The major and minor axes of tumors were measured with Digimatic caliper (Mitsutoyo), and tumor volumes and relative tumor volumes were calculated according to the following formulae.
Tumor Volume TV=Major axis of tumor(mm)×(Minor axis of tumor)2(mm2)/2
Relative Tumor Volume RTV=Tumor volume on measurement day/Tumor volume on the first administration day
If statistically significant interaction was observed in the combinational use group by two-way ANOVA, a synergistic effect was considered to exist between E7820 and Oxaliplatin.
As a result, E7820 was found to produce a synergistic effect when used in combination with Oxaliplatin, and their combinational use showed a superior anti-tumor effect as copared with the effect obtained with E7820 or Oxaliplatin alone (Table 5 and
Table 5 shows anti-tumor effects obtained by the use of E7820 alone, the use of Oxaliplatin alone and the combinational use of E7820 and Oxaliplatin in Colo320DM nude mouse subcutaneous transplant models. The first day of administration was considered Day 1.
From the obtained results, the combination of E7820 and Oxaliplatin provides a pharmaceutical composition and a kit that show a remarkable anti-tumor activity, and a method for treating cancer, and thus the pharmaceutical composition, the kit and the method of the invention can be used for treating cancer.
Human colon cancer cell line Colo320DM (purchased from Dainippon Pharmaceutical) was cultured in RPMI1640 (containing 10% FBS) in a 5% carbon dioxide incubator at 37° C. to about 80% confluence, and the cells were collected with trypsin-EDTA. Using a phosphate buffer containing 50% matrigel, 7.5×107 cells/mL suspension was prepared, and 0.1 mL each of the resulting cell suspension was subcutaneously transplanted to a nude mouse at the side of its body. Six days after the transplantation, administrations of E7820 (50 mg/kg, twice a day, for two weeks, oral administration) and CPT-11 (Topotecin®, Daiichi Pharm) (100 mg/kg, once in four days, total of three times, intravenous administration) alone or in combination were initiated. The major and minor axes of tumors were measured with Digimatic caliper (Mitsutoyo), and tumor volumes and relative tumor volumes were calculated according to the following formulae.
Tumor Volume TV=Major axis of tumor(mm)×(minor axis of tumor)2(mm2)/2
Relative Tumor Volume RTV=Tumor volume on measurement day/Tumor volume on the first administration day
If statistically significant interaction was observed in the combinational use group by two-way ANOVA, a synergistic effect is considered to exist between E7820 and CPT-11.
As a result, E7820 was found to produce a synergistic effect when used in combination with CPT-11, and their combinational use showed a superior anti-tumor effect as compared with the effect obtained with E7820 or CPT-11 alone (Table 6 and
Table 6 shows anti-tumor effects obtained by the use of E7820 alone, the use of CPT-11 alone and the combinational use of E7820 and CPT-11 in Colo320DM nude mouse subcutaneous transplant models. The first day of administration was considered Day 1.
From the obtained results, the combination of E7820 and CPT-11 provides a pharmaceutical composition and a kit that show a remarkable anti-tumor activity, and a method for treating cancer, and thus the pharmaceutical composition, the kit and the method of the invention can be used for treating cancer.
Human pancreas cancer cell line KP-1 (obtained from the National Kyushu Cancer Center) was cultured in RPMI1640 (containing 10% FBS) in a 5% carbon dioxide incubator at 37° C. to about 80% confluence, and the cells were collected with trypsin-EDTA. Using a phosphate buffer, 1×108 cells/mL suspension was prepared, and 0.11 mL each of the resulting cell suspension was subcutaneously transplanted to a nude mouse at the side of its body. Eleven days after the transplantation, administrations of E7820 (50 mg/kg, twice a day, for three weeks, oral administration) and Gemcitabine (GEMZAR®, Eli Lilly Japan) (200 mg/kg, once in three days, total of four times, intravenous administration) alone or in combination were initiated. The major and minor axes of tumors were measured with Digimatic caliper (Mitsutoyo), and tumor volumes and relative tumor volumes were calculated according to the following formulae.
Tumor Volume TV=Major axis of tumor(mm)×(Minor axis of tumor)2(mm2)/2
Relative Tumor Volume RTV=Tumor volume on measurement day/Tumor volume on the first administration day
If statistically significant interaction was observed in the combinational use group by two-way ANOVA, a synergistic effect was considered to exist between E7820 and Gemcitabine.
As a result, E7820 was found to produce a synergistic effect when used in combination with Gemcitabine, and their combinational use showed a superior anti-tumor effect as compared with the effect obtained with E7820 or Gemcitabine alone (Table 7 and
Table 7 shows anti-tumor effects obtained by the use of E7820 alone, the use of Gemcitabine alone and the combinational use of E7820 and Gemcitabine in KP-1 nude mouse subcutaneous transplant models. The first day of administration was considered Day 1.
From the obtained results, the combination of E7820 and Gemcitabine provides a pharmaceutical composition and a kit that show a remarkable anti-tumor activity, and a method for treating cancer, and thus the pharmaceutical composition, the kit and the method of the invention can be used for treating cancer.
2×106 of human umbilical vein endothelial cells were seeded in a 25 cm2 cell culture bottle and cultured in a CO2 incubator at 37° C. using a EGM-2 medium (Sanko Junyaku) overnight. On the following day, E7820 was added to give 1 μM. Six hours later, RNA was prepared from the cells. Specifically, the medium was removed from the cells. The cells were added with and dissolved in 3 ml of ISOGEN (Wako Pure Chemical Industries), added with an equal volume of CHCl3 and agitated. Then, the water phase was extracted. Half the amount of the water phase of isopropanol was added, left to stand for 5 minutes and centrifuged to collect the precipitate. The precipitate was washed with 70% ethanol, added with and dissolved in sterile water and absorbance at 260 nm was determined with a spectrophotometer to quantify the RNA amount.
Subsequently, TaqMan Gold RT-PCR kit (Applied Biosystems) was used to perform RT-PCR reaction. Specifically, 0.1 μg of RNA was added to 50 μl of the reaction solution, and subjected to reactions at 25° C. for 10 minutes, 48° C. for 30 minutes and 95° C. for 5 minutes to prepare cDNA. Then, a primer for determining DNA-topoisomerase II mRNA (ABI Taqman probe Hs00172214 ml) was used for PCR reaction and then ABI7700 (Applied Biosystems) was used for quantifying RNA amount.
As a result, the amount of DNA-topoisomerase II mRNA was 4.4 μg/ml for the untreated group and 1.6 μg/ml for the E7820-treated group.
DNA-topoisomerase I inhibition by an anti-cancer drug has been reported to increase DNA-topoisomerase II in the tumor (Kim R, Hirabayashi N, Nishiyama M, et al. Experimental studies on biochemical modulation targeting topoisomerase I and II in human tumor xenografts in nude mice. Int J Cancer. 1992; 50: 760-6, Whitacre C M, Zborowska E, Gordon N H, et al. Topotecan increases topoisomerase II alpha levels and sensitivity to treatment with etoposide in schedule-dependent process. Cancer Res. 1997; 57: 1425-8). Accordingly, E7820 seems to show a synergistic anti-tumor effect in combination with a DNA-topoisomerase I inhibitor based on inhibition of the expression of DNA-topoisomerase II.
Thus, a sulfonamide compound was strongly suggested to show a synergistic anti-tumor effect when combined with not only CPT-11 but also when combined with other DNA-topoisomerase I inhibitors.
(1) Cell Culture, Compound Treatment and RNA Extraction
For the purpose of examining changes in the gene expression induced by the compounds by DNA microarray analysis, human colon cancer-derived cell line HCT116 (American Type Culture Collection, Manassas, Va., U.S.A.) and human leukemia-derived cell line MOLT-4 (American Type Culture Collection, Manassas, Va., U.S.A.) were cultured in RPMI-1640 media supplemented with 10% fetal bovine serum, 100 units/ml penicillin and 100 μg/ml streptomycin. The following cultivation and compound treatment took place in an incubator set to 5% CO2 and 37° C. The HCT116 cells and the MOLT-4 cells were seeded on 10 cm-diameter cell culture dishes at 2.0×106 cells/dish, cultured for 24 hours and subjected to the following compound treatments.
For the HCT116 cells, 12 compounds, i.e., E7820 (0.8 μM), E7070 (0.8 μM), LY295501 (30 μM), CQS (8 μM), adriamycin (0.2 μM), daunomycin (0.2 μM), ICRF154 (80 μM), ICRF159 (80 μM), kenpaullone (10 μM), alsterpullone (10 μM), trichostatin A (0.1 μM) and rapamycin (80 μM) were assessed. On the other hand, for the MOLT-4 cells, E7070 (0.8 μM) was assessed. Herein, adriamycin and daunomycin are compounds known as DNA intercalative DNA topoisomerase II inhibitors, ICRF154 and ICRF159 are compounds known as catalytic DNA topoisomerase II inhibitors, kenpaullone and alsterpullone are compounds known as cyclin-dependent kinase (CDK) inhibitors, trichostatin A is a compound known as a histone deacetylase inhibitor and rapamycin is a compound known as an mTOR/FRAP inhibitor. The concentration of each compound used for the treatment was set to three to five-fold the 50% growth inhibitory concentration of each compound to the HCT116 cells (based on three days of antiproliferative activity using WST-8). The cells were collected 24 hours after the treatment at the concentration indicated in parentheses following each compound name above. Similarly, cells cultured for 24 hours without the addition of any compound were also collected.
Extraction of total RNA from the collected cells was performed using TRIZOL reagent (Invitrogen) according to the attached instruction.
(2) Analysis of gene expression using DNA microarray
The resulting RNA was dissolved in 100 μl of diethylpyrocarbonate (DEPC)-treated sterilized water, purified using an RNeasy column (QIAGEN), and double-stranded cDNA was synthesized using SuperScript Choice System (Invitrogen) and T7-d(T)24 primers.
First, to 10 μg RNA, 5 μM T7-d(T)24 primer, 1× First strand buffer, 10 mM DTT, 500 μM dNTP mix and 20 units/μl SuperScript II Reverse Transcriptase were added and reacted at 42° C. for an hour to synthesize single-stranded DNA. Subsequently, 1× Second strand buffer, 200 μM dNTP mix, 67 U/ml DNA ligase, 270 U/ml DNA polymerase 1 and 13 U/ml RNase H were added and reacted at 16° C. for two hours to synthesize double-stranded cDNA. Furthermore, 67 U/ml T4 DNA polymerase I was added, reacted at 16° C. for 5 minutes and then 10 μl of 0.5 M EDTA was added to terminate the reaction.
The obtained cDNA was purified with phenol/chloroform, and subjected to labeling reaction with biotinylated UTP and CTP using RNA Transcript Labeling Kit (Enzo Diagnostics) according to the attached instruction. The reaction product was purified using an RNeasy column, heated in 200 mM Tris acetic acid (pH8.1), 150 mM magnesium acetate and 50 mM potassium acetate at 94° C. for 35 minutes for fragmentation of the cRNA.
The fragmented cRNA was hybridized to GeneChip (Affymetrix) Human Focus array in 100 mM MES, 1 M sodium salt, 20 mM EDTA and 0.01% Tween 20 at 45° C. for 16 hours. After the hybridization, GeneChip was washed and stained according to protocol Midi_euk2 attached to the Affymetrix fluidics station. For staining, streptavidin-phycoerythrin and biotinylated anti-streptavidin goat antibody were used. The stained GeneChip was scanned using HP confocal microscope with argon ion laser (Hewlett Packard) to determine fluorescence intensity. Measurement took place at excitation and emission wavelengths of 488 nm and 570 nm, respectively.
All of the quantitative data analyses were carried out using GeneChip software (Affymetrix) and Gene Spring (Silicongenetics). GeneChip software was used for assessing changes in the gene expression induced by each compound, where gene expression was judged to have significantly “increased” or “decreased” when the quantified values in the two conditions, i.e., between the compound-treated group and the untreated group, were twice as different. Gene Spring was used for assessing the similarity of changes in gene expression induced by each compound, where hierarchical cluster analysis was conducted based on changes in the expressions of all genes on the Human Focus Array.
The results from the hierarchical cluster analysis for the HCT116 cells are shown in
As a result of the analysis, adriamycin and daunomycin, ICRF154 and ICRF159, and Kenpaullone and alsterpullone, each pair having the same action mechanism, gave similar genetic alterations (
E7070, E7820, LY295501 and CQS gave similar genetic alterations (
HCT116 cells were cultured in an RPMI-1640 medium supplemented with 10% fetal bovine serum, 100 units/ml penicillin and 100 μg/ml streptomycin. The following cultivation and compound treatment were carried out in an incubator at 5% CO2 and 37° C. HCT116 cells were seeded in 10 cm-diameter cell culture dishes at 2.0×106 cells/dish, cultured for 24 hours and subjected to the following compound treatment.
In this example, changes in the gene expression of HCT116 cells upon treatments with 12 compounds, i.e., E7820 (0.16 μM), E7070 (0.26 μM), LY186641 (59 μM), LY295501 (24 μM), LY-573636 (9.6 μM), CQS (4.0 μM), MST16 (100 μM), etoposide (3.6 μM), ethoxzolamide (410 μM), capsaicin (280 μM), trichostatin A (0.16 μM) and kenpaullone (7.1 μM) were examined.
MST16 is a compound known as a catalytic DNA topoisomerase II inhibitor, etoposide is a compound known as a DNA topoisomerase II inhibitor that induces formation of a cleavable complex, ethoxzolamide is a compound known as a carbonic anhydrase inhibitor, capsaicin is a compound known as a tumor-specific plasma membrane NADH oxidase inhibitor, trichostatin A is a compound known as a histone deacetylase inhibitor and kenpaullone is a compound known as a cyclin-dependent kinase (CDK) inhibitor.
The concentration of each compound used for the treatment was set to twice the 50% growth inhibitory concentration of each compound to the HCT116 cells (based on three days of antiproliferatrive activity using MTT). The cells were collected 24 hours after the treatment at the concentration indicated in parentheses following each compound name above. Similarly, cells cultured for 24 hours without the addition of any compound were also collected.
Total RNA extraction from the collected cells was performed using TRIZOL reagent (Invitrogen) according to the attached instruction.
Gene expression analysis using a DNA microarray was carried out in the same manner as “(2) Analysis of gene expression using DNA microarray” in Example 7.
This example was conducted for each sample in duplicate (for the convenience of the experiment, samples were given branch numbers like control-1, control-2, E7070-1, E7070-2 and so on for distinction). Then, GeneChip (Affymetrix) system (Human Focus array) was used for analyzing changes in the gene expression induced by each compound.
Twenty-six “.cel” files obtained in this example (13 samples (a control+12 compounds)×2) were subjected to RMA method (robust multi-array average method (Biostatistics (2003), 4, 249-264)) for normal distribution at probe level, and then the logarithm value of the signal intensity at gene level was calculated. Next, the logarithm value of the signal intensity of the untreated group (control-1) was subtracted from the logarithm value of the signal intensity of the compound-treated group for each gene to obtain the logarithm value of the signal ratio of the compound-treated group to control-1. Then, cosine correlation coefficients were calculated as correlation coefficients between the experiments (
In
As a result of the analysis, E7070, E7820, LY186641, LY295501, LY573636 and CQS showed very similar genetic alterations for the HCT116 cells, and were found to be different from the profiles of any of the other compounds (MST16, etoposide, ethoxzolamide, capsaicin, trichostatin A and kenpaullone) (
Human cancer cell panels from 36 cell lines were used to examine correlation of antiproliferative activities among E7820, E7070, CQS, LY186641 and LY295501. The 36 types of cancer cell lines used were DLD-1, HCT15, HCT116, HT29, SW480, SW620 and WiDr (which are human colon cancer cell lines), A427, A549, LX-1, NCI-H460, NCI-H522, PC-9 and PC-10 (which are human lung cancer cell lines), GT3TKB, HGC27, MKN1, MKN7, MKN28 and MKN74 (which are human gastric cancer cell lines), AsPC-1, KP-1, KP-4, MiaPaCaII, PANC-1 and SUIT-2 (which are human pancreas cancer cell lines), BSY-1, HBC5, MCF-7, MDA-MB-231, MDA-MB-435 and MDA-MB-468 (which are human breast cancer cell lines), and CCRF-CEM, HL60, K562 and MOLT-4 (which are human leukemia cell lines). All of the cells were cultured using RPMI-1640 media supplemented with 10% fetal bovine serum, 100 units/ml penicillin and 100 μg/ml streptomycin under the conditions of 5% CO2 and 37° C. (Table 8).
Table 8 shows the types, seeded cell numbers and doubling times of the human cancer cell lines in the human cancer cell line panels.
The cells were seeded on a 96-well microplate (flat bottom) at the number indicated in Table 8 (50 μ/well). Twenty-four hours later, they were added with a 3-fold dilution series of each compound (50 μl/well). Seventy-two hours later, WST-8 (10 μl/well) was added and absorbance at 450 nm was determined. The 50% growth inhibitory concentrations to all of the 36 cancer cell lines were obtained by a least square method and their patterns were compared between the compounds. As the correlation index, Pearson's correlation coefficients were used (Paull, K. D. et al. Display and analysis of patterns of differential activity of drugs against human tumor cell lines: development of mean graph and COMPARE algorithm. J. Natl. Cancer Inst. 1989, 81, 1088-1092; Monks, A. et al. Feasibility of a high-flux anticancer drug screen using a diverse panel of cultured human tumor cell lines. J. Natl. Cancer Inst. 1991, 83, 757-766).
As a result, E7070, E7820, LY186641, LY295501 and CQS showed high correlation coefficients in antiproliferative activities against each cancer cell line (Table 9). Thus, by this analysis, E7070, E7820, LY186641, LY295501 and CQS were considered to have the same or similar action mechanisms, strongly suggesting that they give the same or similar genetic alterations and effects.
Table 9 shows correlation coefficients between the compounds (E7070, E7820, CQS, LY186641 and LY295501) on the human cancer cell line panels.
An E7070-resistant cell line was used to assess the antiproliferative activities of E7820, LY186641, LY295501, LY-ASAP and CQS. HCT116-C9 was a substrain separated from human colon cancer-derived HCT116 (American Type Culture Collection, Manassas, Va., U.S.A.). This HCT116-C9 was cultured in the presence of E7070 while incrementally increasing the E7070 concentration, thereby obtaining E7070-resistant substrains HCT116-C9-C1 and HCT116-C9-C4 (Molecular Cancer Therapeutics, 2002, 1, 275-286).
Three cell lines, i.e., HCT116-C9, HCT116-C9-C1 and HCT116-C9-C4, were each seeded at 3000 cells/well onto a 96-well microplate (flat bottom) (50 μl/well). Twenty-four hours later, they were added with a 3-fold dilution series of each compound (50 μl/well). Seventy-two hours later, the antiproliferative activities were assessed by MTT method (Mossmann T., J. Immunol. Methods, 1983, 65, 55-63). The 50% growth inhibitory concentrations to the cancer cells were obtained by a least square method.
As a result, the antiproliferative activity, i.e., IC50, of E7070 to HCT116-C9 (C9) was 0.127 μM. On the other hand, activities to HCT116-C9-C1 (C9C1) and HCT116-C9-C4 (C9C4) were IC50=31.9 μM and 26.9 μM, respectively, confirming that the antiproliferative activities of E7070 to C9C1 and C9C4 were remarkably low (
In exactly the same manner as in Example 10, an E7070-resistant cell line was used to assess the antiproliferative activities of LY573636 as well as those of E7070.
As a result, the antiproliferative activities of E7070 to HCT116-C9-C1 and HCT116-C9-C4 (IC50=32.7 μM and 28.0 μM, respectively) were again confirmed to be remarkably lower than the activity to HCT116-C9 (IC50=0.127 μM) (
These results (Examples 7-11) confirmed that E7070, E7820, LY186641, LY295501, LY-ASAP, LY573636, CQS or a combination thereof give the same or similar genetic alterations and thus resulting in the same or similar actions and effects.
Accordingly, similar to E7820 (Examples 1-6), a sulfonamide compound, preferably E7070, LY186641, LY295501, LY-ASAP, LY573636, CQS or a combination thereof was found to show a remarkable anti-tumor activity and angiogenesis inhibiting activity upon combinational use with at least one compound selected from (i) a platinum complex, preferably Oxaliplatin or Cisplatin, (ii) a DNA-topoisomerase I inhibitor, preferably CPT-11, (iii) an antimetabolite, preferably Gemcitabine or Methotrexate, (iv) a microtubule inhibitor, preferably Paclitaxel and (v) an antibiotic, preferably Doxorubicin.
The present invention provides a pharmaceutical composition and a kit that show a remarkable anti-tumor activity and/or angiogenesis inhibiting activity, and a method for treating cancer and/or a method for inhibiting angiogenesis.
More specifically, the present invention provides a pharmaceutical composition and a kit that show a remarkable anti-tumor activity and/or angiogenesis inhibiting activity, and a method for treating cancer and/or a method for inhibiting angiogenesis, characterized in combining a sulfonamide compound (I.e., at least one compound selected from: (A) E7820; (B) a compound represented by General Formula (I), preferably LY186641 or LY295501; (C) a compound represented by General Formula (II), preferably LY-ASAP; (D) LY573636; and (E) CQS) with at least one substance selected from (i) a platinum complex, preferably Oxaliplatin or Cisplatin, (ii) a DNA-topoisomerase I inhibitor, preferably CPT-11, (iii) an antimetabolite, preferably Gemcitabine or Methotrexate, (iv) a microtubule inhibitor, preferably Paclitaxel and (v) an antibiotic, preferably Doxorubicin. The pharmaceutical composition, the kit and the method of the invention are useful for treating cancer or for inhibiting angiogenesis.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2005-055132 | Feb 2005 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2006/304219 | 2/28/2006 | WO | 00 | 8/27/2007 |
