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    • 8. 发明授权
    • Method of inhibiting the formation of inhibin/betaglycan complexes with an anti-betaglycan antibody
    • 抑制与抗β-糖苷聚糖抗体形成抑制素/糖浆蛋白复合物的方法
    • US07455839B2
    • 2008-11-25
    • US10696717
    • 2003-10-29
    • Wylie ValeKathy A. LewisPeter C. GrayLouise M. BilezikjianAmy L. Blount
    • Wylie ValeKathy A. LewisPeter C. GrayLouise M. BilezikjianAmy L. Blount
    • A61K39/395C07K16/00C12P21/08
    • C07K16/2863A61K2039/505C07K16/24C07K16/26G01N33/74G01N2500/00
    • Inhibins and activins are protein hormones that reciprocally modulate a diversity of regulatory pathways. Competitive binding experiments revealed that betaglycan, the type III TGF-β receptor, also functions as an inhibin receptor. Betaglycan augments the binding of inhibin to the ActRII activin receptor. By augmenting inhibin binding to ActRII, betaglycan effectively sequesters ActRII away from activin and thereby reduces activin signaling. In addition, the ActRII-betaglycan complex may generate novel signals distinct from those initiated by activin signaling via ActRII and ALK4. Betaglycan is produced in discrete nuclei of the rat brain and by specific cell types within the adult rat pituitary, testis, and ovary. The presence of betaglycan within inhibin-responsive tissues and cell types, together with the ability of this protoglycan to bind inhibin and to confer inhibin sensitivity, is consistent with a role of betaglycan as an inhibin-specific receptor mediating inhibin responses within various tissues.
    • 抑制素和激活素是相互调节多种调节途径的蛋白质激素。 竞争性结合实验显示,β糖蛋白聚糖,III型TGF-β受体也起抑制素受体的作用。 Betaglycan可增强抑制素与ActRII激活素受体的结合。 通过增加与ActRII的抑制素结合,betaglycan可以有效地将ActRII螯合起激活素,从而减少激活素信号。 此外,ActRII-betaglycan复合物可以产生与通过ActRII和ALK4的激活素信号发起的新信号不同的新信号。 雌激素在大鼠脑的离散细胞核和成年大鼠垂体,睾丸和卵巢中的特定细胞类型产生。 抑制素反应性组织和细胞类型中存在的betaglycan,以及该原始糖蛋白结合抑制素并赋予抑制素敏感性的能力与betaglycan作为介导各种组织内的抑制素反应的抑制素特异性受体的作用一致。