Antibodies that block receptor protein tyrosine kinase...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/13 (2006.01) A61K 39/395 (2006.01) A61P 19/04 (2006.01) A61P 19/08 (2006.01) A61P 35/00 (2006.01) C07K 16/28 (2006.01) C07K 16/30 (2006.01) G01N 33/566 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2450793

Molecules containing the antigen-binding portion of antibodies that block constitutive and/or ligand-dependent activation of a receptor protein tyrosine kinase, such as fibroblast growth factor receptor 3 (FGFR3), are found through screening methods, where a soluble dimeric form of a receptor protein tyrosine kinase is used as target for screening a library of antibody fragments displayed on the surface of bacteriophage. The molecules of the present invention which block constitutive activation can be administered to treat or inhibit skeletal dysplasia, craniosynostosis disorders, cell proliferative diseases or disorders, or tumor progression associated with the constitutive activation of a receptor protein tyrosine kinase.

L'invention concerne des molécules renfermant la partie de liaison aux antigènes des anticorps bloquant l'activation constitutive et/ou dépendante du ligand d'un récepteur à activité protéine tyrosine kinase, tel qu'un récepteur 3 du facteur de croissance des fibroblastes (FGFR3), et étant découvertes par des procédés de criblage, une forme dimère d'un récepteur à activité protéine tyrosine kinase étant mise en oeuvre comme cible pour le criblage d'une banque de fragments d'anticorps présentés sur la surface d'un bactériophage. Les molécules selon l'invention qui bloquent l'activation constitutive peuvent être administrées aux fins de traitement ou d'inhibition de dysplasie squelettique, de troubles de craniosténose, de maladies ou de troubles à prolifération cellulaire ou d'une progression tumorale associée à l'activation constitutive d'un récepteur à activité protéine tyrosine kinase.

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