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    • 2. 发明申请
    • IMMUNOASSAY FOR SOLUBLE PROGRAMMED DEATH-1 (sPD-1) PROTEIN
    • 免疫编码死亡-1(sPD-1)蛋白质免疫
    • WO2016168143A1
    • 2016-10-20
    • PCT/US2016/027025
    • 2016-04-12
    • BRISTOL-MYERS SQUIBB COMPANY
    • NI, Yan G.YUAN, XilingPICCOLI, Steven P.
    • G01N33/566G01N33/74
    • G01N33/566G01N33/74
    • This disclosure provides a method for quantifying total soluble Programmed Death-1 (sPD-1) in a sample solution comprising the steps of performing a "sandwich" immunoassay on the sample solution and a series of reference solutions containing known quantities of sPD-1, wherein the immunoassay is performed using (a) a sPD-1 reference antigen in monomeric form; (b) a capture antibody that is capable of binding to sPD-1 in both monomeric and dimeric forms, which binding is essentially unaffected by the presence of the PD-1 ligands, PDL-1, PDL-2, and/or a therapeutic anti-PD-1 antibody; and (c) an electrochemiluminescent-labeled detection antibody that is capable of binding to sPD-1 in both monomeric and dimeric forms, which binding is to a different epitope on sPD-1 than the epitope bound by the capture Ab and is essentially unaffected by the presence of PDL-1, PDL-2 and/or a therapeutic anti-PD-1 Ab.
    • 本公开提供了一种用于量化样品溶液中的总可溶性程序死亡-1(sPD-1)的方法,包括以下步骤:在样品溶液上进行“夹心”免疫测定,以及一系列含有已知量的sPD-1, 其中使用(a)单体形式的sPD-1参照抗原进行免疫测定; (b)能够以单体和二聚体形式结合sPD-1的捕获抗体,其结合基本上不受PD-1配体,PDL-1,PDL-2和/或治疗剂的存在的影响 抗PD-1抗体; 和(c)电化学发光标记的检测抗体,其能够以单体和二聚体形式结合sPD-1,其结合到sPD-1上的不同表位,而不是被捕获Ab结合的表位,并且基本上不受 PDL-1,PDL-2和/或治疗性抗-PD-1Ab的存在。