Expression of Ia-like antigens by human vascular endothelial cells is inducible in vitro: demonstration by monoclonal antibody binding and immunoprecipitation.

Expression of Ia-like antigens by human vascular endothelial cells is inducible in vitro: demonstration by monoclonal antibody binding and immunoprecipitation.
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人血管内皮细胞 Ia 样抗原的表达在体外是可诱导的:通过单克隆抗体结合和免疫沉淀证实。

DOI:
10.1073/pnas.79.21.6641
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发表时间:
1982
影响因子:
11.1
通讯作者:
GimbroneJr,MA
GimbroneJr,MA
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Pober,JS;GimbroneJr,MA

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用单克隆抗体结合完整细胞和放射性碘化膜蛋白免疫沉淀的方法研究了ia样抗原在体外培养的人内皮细胞中的表达。人脐静脉内皮原代生长和融合培养在标准培养条件下表达很少(如果有的话)可检测的ia样抗原。然而,用植物血凝素处理原代培养物可诱导ia样抗原的表达。凝集素的这种作用均匀地影响培养中的所有内皮细胞,不依赖于细胞分裂,并且与细胞形状改变有关。本报告中的数据提供了ia样抗原在人血管内皮细胞上的明确的血清学和生化证明。内皮细胞可以诱导ia样抗原的表达,这一事实可能对器官移植和免疫反应的调节具有重要意义。
The expression of Ia-like antigens by cultured human endothelial cells has been investigated by means of monoclonal antibody binding to intact cells and by immunoprecipitation of radioiodinated membrane proteins. Primary growing and confluent cultures of human umbilical vein endothelium express little, if any, detectable Ia-like antigens under standard culture conditions. However, treatment of primary cultures with the lectin phytohemagglutinin induces the expression of Ia-like antigens. This action of the lectin uniformly affects all the endothelial cells in a culture, does not depend on cell division, and is associated with a cell shape change. The data presented in this report provide unequivocal serological and biochemical demonstration of Ia-like antigens on human vascular endothelial cells. The fact that the expression of Ia-like antigens by endothelium can be induced may have important implications for organ transplantation and for regulation of the immunological response.
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