Phenotypic and functional characterization of lymphocytes that bind human microvascular endothelial cells in vitro. Evidence for preferential binding of natural killer cells.

Phenotypic and functional characterization of lymphocytes that bind human microvascular endothelial cells in vitro. Evidence for preferential binding of natural killer cells.
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体外结合人微血管内皮细胞的淋巴细胞的表型和功能特征。

DOI:
10.1172/jci113007
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发表时间:
1987
期刊:
The Journal of clinical investigation
影响因子:
--
通讯作者:
Engleman,EG
Engleman,EG
中科院分区:
--
文献类型:
--
作者:
Bender,JR;Pardi,R;Karasek,MA;Engleman,EG

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微血管内皮被认为是血管化同种异体移植排斥反应的关键靶点。本研究旨在检测人绵羊红细胞玫瑰花结形成淋巴细胞(E-RFC)与微血管内皮细胞(EC)形成稳定结合物的能力,并评估受体-配体相互作用是否介导了这一事件。人包皮微血管EC单层被用作铬-51标记的E-RFC在定量粘附试验的目标。结合是饱和的,可被未标记的E-RFC取代,被重组白细胞介素1(rIL-1)增强,并被抗LFA 1抗体抑制。已知富含自然杀伤(NK)细胞的Leu-11+淋巴细胞亚群优先结合。只有EC粘附淋巴细胞部分含有NK效应物,其裂解EC和经典NK靶。因此,NK细胞通过特异性受体-配体相互作用粘附于微血管EC。这种结合可能发生在血管化同种异体移植物的受体中,代表移植物排斥反应的初始阶段。图片
The microvascular endothelium has been postulated to be a critical target in the rejection of vascularized allografts. This study was undertaken to examine the ability of human sheep erythrocyte rosette forming lymphocytes (E-RFC) to form stable conjugates with microvascular endothelial cells (EC), and to assess whether a receptor-ligand interaction mediates this event. Human foreskin microvascular EC monolayers were used as targets of chromium-51-labeled E-RFC in a quantitative adherence assay. Binding was saturable, displaceable by unlabeled E-RFC, augmented by recombinant interleukin 1 (rIL-1) and inhibited by anti-LFA1 antibody. The Leu-11+ lymphocyte subset, known to be enriched for natural killer (NK) cells, bound preferentially. Only the EC-adherent lymphocyte fraction contained NK effectors, which lysed EC and classical NK targets. Thus, NK cells adhere to microvascular EC via a specific receptor-ligand interaction. The possibility exists that such binding occurs in recipients of vascularized allografts, representing the initial stage of graft rejection.Images
通过高分辨率电影显微摄影确定细胞毒性 T 淋巴细胞颗粒与靶细胞相互作用后的重新定向和融合。
DOI: --
发表时间: 1986
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影响因子: --
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影响因子: 15.3
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同种异体抗原识别之前是细胞毒性 T 细胞和靶细胞的非特异性粘附。
DOI: 10.1126/science.3485822
发表时间: 1986
期刊: Science (New York, N.Y.)
影响因子: --
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