Modified biological material

Details Modified biological material Modified biological material

C - Chemistry, Metallurgy

12

N

C12N 15/12 (2006.01) A01K 67/027 (2006.01) C07K 14/47 (2006.01) C07K 14/705 (2006.01) C12N 5/10 (2006.01) C12N 15/00 (2006.01) C12N 15/85 (2006.01)

Patent

CA 2067235

2067235 9105855 PCTABS00005 Conventionally, animal tissue from one species can only be transplanted into another species when the species are concordant; otherwise, hyperimmune rejection ensues. In this invention, donor tissue is modified, for example by being transgenic, to express or otherwise be in association with one or more substances, referred to as homologous complement restriction factors (HCRFs), which are active in the recipient species to prevent the complete activation of complement and therefore rejection. The invention is in part based on the discovery that the alternative pathway of complement activation, rather than the classical pathway, is responsible for hyperacute discordant xenograft rejection.

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