An immortalized mammal hybridoma fusion partner

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 5/10 (2006.01) A01K 67/027 (2006.01) C07K 16/00 (2006.01) C07K 16/42 (2006.01) C12N 5/16 (2006.01) C12N 15/06 (2006.01) C12N 15/85 (2006.01) C12P 21/08 (2006.01) G01N 33/543 (2006.01)

Patent

CA 2214018

Novel methods are provided for producing fusion partners for the production of specific binding proteins, particularly immunoglobulins. Nuclei of fertilized ova are microinjected with an oncogene to express specifically in lymphoid cells (i.e., lymphoid specific) and the embryos are then implanted in appropriate hosts. The newborns are maintained to sexual maturity and are either mated with hosts that developed from embryos that had been microinjected with a different lymphoid-specific oncogene or their fertilized eggs are microinjected with another oncogene specific for lymphoid cells. The immortalized lymphoid cells that develop in these animals may be genetically altered and used as fusion partners to produce hybridomas for the production of monoclonal antibodies.

L'invention concerne de nouveaux procédés pour obtenir des partenaires de fusion destinés à la production de protéines de liaison spécifique, en particulier des immunoglobulines. Des noyaux d'oeufs fertilisés reçoivent par micro-injection un oncogène s'exprimant spécifiquement dans les cellules lymphoïdes (oncogène spécifique des cellules lymphoïdes) et les embryons sont implantés chez des hôtes appropriés. Les animaux nés sont conservés jusqu'à leur maturité sexuelle et sont accouplés avec des hôtes provenant d'embryons ayant reçu, par micro-injection, un autre oncogène spécifique des cellules lymphoïdes ou leurs oeufs fertilisés reçoivent par micro-injection un autre oncogène spécifique des cellules lymphoïdes. Les cellules lymphoïdes immortalisés qui se développent dans ces animaux peuvent être modifiées génétiquement et utilisées comme partenaires de fusion pour obtenir des hybridomes produisant des anticorps monoclonaux.

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