{{'Search' | translate}}
 

Recombinant Human KIR2DL1/CD158a Fc Chimera Protein, CF

重组人KIR2DL1 / CD158a Fc嵌合蛋白,CF

Company: R&D Systems
Catalog#: 1844-KR-050
Bio-protocol()
Company-protocol()
Other protocol()

Killer Cell Ig-like Receptors (KIR)-Binding Assay for Tumor Cells
Author:
Date:
2016-09-20
[Abstract]  Natural killer (NK) cells play key roles in innate and adaptive immune responses against virus and tumor cells. Their function relies on the dynamic balance between activating and inhibiting signals through receptors that bind ligands expressed on target cells. The absence of inhibitory receptor engagement with their ligands and the presence of activating signals transmitted by activating receptors interacting with specific ligands, leads to NK cell activation (Lanier, 2005; Raulet et al., 2001). Thus, the balance of the ligands expressed for inhibitory and activating receptors determines whether NK cells will become activated to kill the target cells. This protocol allows to assign a precise ligand specificity to any given receptor on NK cells. Thus, if a tumor cell expresses ... [摘要]  自然杀伤(NK)细胞在针对病毒和肿瘤细胞的先天和适应性免疫应答中发挥关键作用。它们的功能依赖于通过结合靶细胞上表达的配体的受体在激活和抑制信号之间的动态平衡。不存在与其配体的抑制性受体接合和通过活化受体与特异性配体相互作用传递的激活信号的存在导致NK细胞活化(Lanier,2005; Raulet等人,2001)。因此,针对抑制性和激活受体表达的配体的平衡决定了NK细胞是否将被激活以杀死靶细胞。该协议允许给NK细胞上的任何给定受体分配精确的配体特异性。因此,如果肿瘤细胞表达配体,则该方案将允许评价其与特异性受体的相互作用。特别地,通过与HLA I类重链残基和结合肽的氨基酸残基的直接接触,杀伤细胞免疫球蛋白(Ig)样受体(KIR)识别它们的配体(HLA I类分子)。该方案将允许测试氨基酸取代或其他突变对KIR与HLA I型结合的影响。我们使用该方案描述ERAP1(MHC I类抗原加工的关键组分)在调节NK细胞中的作用通过控制抑制性受体的接合来控制细胞功能(Cifaldi等人,2015)。

Comments