MODIFIED IMMUNOGLOBULIN HINGE REGIONS TO REDUCE HEMAGGLUTINATION
    2.
    发明申请
    MODIFIED IMMUNOGLOBULIN HINGE REGIONS TO REDUCE HEMAGGLUTINATION 审中-公开
    修改免疫球蛋白铰链区域,以减少血液凝集

    公开(公告)号:WO2018081448A1

    公开(公告)日:2018-05-03

    申请号:PCT/US2017/058569

    申请日:2017-10-26

    摘要: Polypeptide compositions comprising a human immunoglobulin constant region with a modified IgG4 hinge region having an N-terminal deletion of 1, 2, 3, 4, 5 amino acids, relative to a native human IgG4 hinge sequence are provided. In some embodiments the hinge sequence further comprises the amino acid substitution S228P (Eu numbering). Polypeptides comprising the modified sequence optionally comprise a binding moiety specific for an epitope that is present on red blood cells; and can provide for reduced agglutination of hematopoietic cells compared to a comparable polypeptide with a native hinge region.

    摘要翻译: 包含相对于天然人IgG4铰链序列具有N末端缺失1,2,3,4,5个氨基酸的修饰的IgG4铰链区的人免疫球蛋白恒定区的多肽组合物是 提供。 在一些实施方案中,铰链序列还包含氨基酸取代S228P(Eu编号)。 包含修饰序列的多肽任选地包含对存在于红细胞上的表位具有特异性的结合部分; 并且与具有天然铰链区的可比较多肽相比,可以减少造血细胞的凝集。