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    • 1. 发明申请
    • FC RECEPTOR-BINDING POLYPEPTIDES WITH MODIFIED EFFECTOR FUNCTIONS
    • 具有改良效应功能的FC受体结合多肽
    • WO2009101479A2
    • 2009-08-20
    • PCT/IB2008003978
    • 2008-05-14
    • NOVIMMUNE SAELSON GREGLEGER OLIVIER
    • ELSON GREGLEGER OLIVIER
    • C07K16/28A61K2039/505C07K16/2896C07K2317/24C07K2317/52C07K2317/71
    • Disclosed are processes for producing a variant polypeptide (e.g. antibodies) having modified binding characteristics for human Fc gamma receptor IIA (CD32A) leading to increased inhibition of proinflammatory mediators while retaining binding to a target antigen via its Fv portion, which processes comprise altering the polypeptides by substitution of at least two amino acid residues at EU position 325, 326 or 328 of a human IgG CH2 region for a sequence selected from SAAF, SKAF, NAAF and NKAF. Also disclosed are molecules, particularly polypeptides, more particularly immunoglobulins (e.g. antibodies) that include a variant CDR3 region, wherein the variant CDR3 region includes at least one amino acid modified relative to a wild-type CDR3 region. The polypeptides that can be generated according to the methods of the invention are highly variable, and they can include antibodies and fusion proteins that contain an Fc region or a biologically active portion thereof.
    • 公开了用于产生具有修饰的人Fcγ受体IIA(CD32A)结合特征的变体多肽(例如抗体)的方法,导致促炎介质的增加的抑制,同时通过其Fv部分保留与靶抗原的结合,该方法包括改变多肽 通过取代选自SAAF,SKAF,NAAF和NKAF的序列的人IgG CH2区域的EU位置325,326或328处的至少两个氨基酸残基。 还公开了分子,特别是多肽,更特别是包括变体CDR3区的免疫球蛋白(例如抗体),其中变体CDR3区包括相对于野生型CDR3区修饰的至少一个氨基酸。 可以根据本发明的方法产生的多肽是高度可变的,并且它们可以包括含有Fc区或其生物活性部分的抗体和融合蛋白。