ANTI-CLDN6 ANTIBODY

• Main Authors: SAKUMOTO, HIROFUMI, ABURATANI, HIROYUKI, KAWAI, SHIGETO, NISHIMURA, KUNIHIRO, TSUTSUMI, SHUICHI
• Format: Patent
• Language: English; French; German
• Published: 19.10.2016
• Subjects: BEER; BIOCHEMISTRY; CHEMISTRY; COMPOSITIONS THEREOF; CULTURE MEDIA; ENZYMOLOGY; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE; HUMAN NECESSITIES; HYGIENE; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MICROBIOLOGY; MICROORGANISMS OR ENZYMES; MUTATION OR GENETIC ENGINEERING; ORGANIC CHEMISTRY; PEPTIDES; PHYSICS; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS; SPIRITS; TESTING; VINEGAR; WINE

Disclosed is an antibody capable of binding to Claudin-6 (CLDN6) which is expressed on the surface of a cell membrane. The antibody can recognize human CLDN6 occurring on the surface of a cell membrane in its native form, and has a cytotoxic activity (e.g., ADCC activity and a CDC activity) against a cancer cell line which expresses human CLDN6 at a high level. A conjugate of the antibody and a toxin has an inhibitory activity on the cell proliferation of a cancer cell line which expresses human CLDN6 at a high level. The expression of human CLDN6 is not observed in a normal tissue, but is increased in a tumor tissue (e.g., pulmonary adenocarcinoma, gastric cancer, ovarian cancer). The anti-CLDN6 antibody is expected to be highly accumulated in tumor in which human CLDN6 has been expressed at a high level, and therefore can be used as an extremely effective anti-tumor agent.