Fusion proteins containing recombinant cytotoxic rnases

C - Chemistry – Metallurgy – 12 – P

Patent

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Details

C12P 21/00 (2006.01) A61K 39/395 (2006.01) A61K 51/08 (2006.01) A61K 51/10 (2006.01) C07K 19/00 (2006.01)

Patent

CA 2555661

Recombinant immunotoxins containing a cytotoxic RNAse fused to an antibody or antibody fragment may be produced in mammalian cell culture. Surprisingly, immunotoxins containing a cytotoxic RNAse fused to the N-terminus of one antibody variable domain can be prepared and retain the ability to specifically bind antigen. The immunotoxins may be used in a variety of therapeutic methods for treating diseases or syndromes associated with unwanted or inappropriate cell proliferation or activation.

L'invention concerne des immunotoxines recombinantes contenant une RNAse cytotoxique fusionnée à un anticorps ou à un fragment d'anticorps pouvant être produit dans une culture de cellules mammaliennes. Curieusement, les immunotoxines contenant une RNAse cytotoxique fusionnée au N-terminal d'un domaine variable d'anticorps peuvent être préparées et conservent la capacité à se lier à l'antigène de façon spécifique. Les immunotoxines peuvent être utilisées dans une variété de procédés thérapeutiques dans le traitement de maladies ou de syndromes associés à une activation ou une prolifération de cellules non désirée ou inappropriée.

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