Antibodies, including fv molecules, and immunoconjugates...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/30 (2006.01) A61K 38/16 (2006.01) A61K 39/395 (2006.01) A61K 47/48 (2006.01) A61K 49/16 (2006.01) C12N 5/10 (2006.01) C12N 15/13 (2006.01) C12N 15/63 (2006.01) G01N 33/563 (2006.01) G01N 33/574 (2006.01) G01N 33/58 (2006.01)

Patent

CA 2318576

Mesothelin is a differentiation antigen present on the surface of ovarian cancers, mesotheliomas and several other types of human cancers. Because among normal tissues, mesothelin is only present on mesothelial cells, it represents a good target for antibody mediated delivery of cytotoxic agents. The present invention is directed to anti- mesothelin antibodies, including Fv molecules with particularly high affinity for mesothelin, and immunoconjugates employing them. Also described are diagnostic and therapeutic methods using the antibodies. The anti-mesothelin antibodies are well-suited for the diagnosis and treatment of cancers of the ovary, stomach, squamous cells, mesotheliomas and other malignant cells expressing mesothelin.

La mésothéline est un antigène de différenciation présent à la surface des cellules typiques de cancers ovariens, de mésothéliomes et de plusieurs autres types de cancers humains. Puisque dans les tissus normaux la mésothéline n'est présente que sur les cellules mésothéliales, elle représente une bonne cible pour la dissémination d'agents cytotoxiques induite par les anticorps. La présente invention concerne des anticorps anti-mésothéline, notamment des molécules Fv présentant tout particulièrement une grande affinité pour la mésothéline, ainsi que des immunoconjugués les utilisant. Cette invention concerne par ailleurs des méthodes diagnostiques et thérapeutiques utilisant ces anticorps. Les anticorps anti-mésothéline conviennent particulièrement bien au diagnostic et au traitement des cancers des ovaires, de l'estomac, des cellules pavimenteuses, des mésothéliomes et d'autres cellules malignes exprimant la mésothéline.

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