Methods and compositions for the identification of growth...

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G01N 33/567 (2006.01) C07K 16/28 (2006.01) C12N 15/10 (2006.01) C12Q 1/68 (2006.01) G01N 33/569 (2006.01) G01N 33/74 (2006.01)

Patent

CA 2316755

Method to identify agonist or inhibitory antibodies to receptors involved in cellular proliferation, differentiation, survival or activation comprising the steps of immunizing an animal with stem/progenitor cells having surface molecules comprising the receptors, so as to generate a plurality of cells expressing one or more antibodies to the surface molecules, creating a library from the plurality of cells, comprising nucleic acid sequences encoding the antibodies, cloning the nucleic acid sequences from the library into surface display vectors so that the antibodies are surface displayed, and screening the surface displayed antibodies using target cells to identify agonist or inhibitory antibodies to the receptors.

L'invention se rapporte à un procédé d'identification d'anticorps agonistes ou inhibiteurs de récepteurs impliqués dans la prolifération et la différentiation cellulaires et la survie et l'activation de cellules. Ledit procédé consiste à immuniser un animal avec des cellules souches ayant des molécules de surface comportant les récepteurs, de façon à générer une pluralité de cellules exprimant un ou plusieurs anticorps dirigés contre lesdites molécules de surface, à créer une banque de composés à partir de cet ensemble de cellules et de séquences d'acides nucléiques codant les anticorps, à cloner les séquences d'acides nucléiques provenant de la librairie dans des vecteurs d'affichage superficiel de sorte que les anticorps sont affichés en surface, et à trier ces anticorps affichés en surface au moyen de cellules cibles dans le but d'identifier des anticorps agonistes ou inhibiteurs des récepteurs.

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