Anti-ilt7 antibody

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/28 (2006.01) A61K 31/7088 (2006.01) A61K 39/395 (2006.01) A61K 48/00 (2006.01) A61P 17/06 (2006.01) A61P 31/18 (2006.01) A61P 35/00 (2006.01) A61P 37/02 (2006.01) A61P 43/00 (2006.01) C07K 14/705 (2006.01) C12N 5/10 (2006.01) C12N 5/16 (2006.01) C12N 15/13 (2006.01) C12P 21/08 (2006.01) G01N 33/53 (2006.01) G01N 33/577 (2006.01) C07K 16/42 (2006.01) C12N 15/09 (2006.01)

Patent

CA 2634116

An antibody binding to IPC was obtained by using an animal cell in which a cell membrane protein associatable with ILT7 was co-expressed as an immunogen. The antibody of the invention has a high specificity which allows immunological distinction between other ILT family molecules and ILT7. The anti-ILT7 antibody of the invention bound to IPC and inhibited the activity thereof. With the anti-ILT7 antibody of the invention, the IPC activity can be inhibited and an interferon-related disease can be treated or prevented. ILT7 expression is maintained even in IPC in the presence of IFN.alpha.. Therefore, an inhibitory action of IPC activity by the anti-ILT7 antibody can be expected even in an autoimmune disease patient with an increased production of IFN.alpha..

La présente invention concerne une liaison d~anticorps à l~IPC obtenue en utilisant une cellule animale dans laquelle une protéine de membrane cellulaire associable à l~ILT7 a été co-exprimée comme immunogène. L~anticorps de l~invention a une haute spécificité qui permet la distinction immunologique entre d~autres molécules de familles ILT et ILT7. L~anticorps anti-ILT7 de l~invention lié à l~IPC et dont l~activité est inhibée. Grâce à l~anticorps anti-ILT7 de l~invention, l~activité IPC peut être inhibée et une maladie liée aux interférons peut être traitée ou empêchée. L~expression ILT7 est maintenue même dans l~IPC en présence d~ IFN.alpha.. Par conséquent, une action inhibitrice de l~activité IPC par l~anticorps anti-ILT7 peut être attendue même chez un patient à maladie auto-immunitaire avec une production augmentée d~IFN.alpha..

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