Circulation:缺血再灌注损伤时释放的内皮细胞来源的IL-18可选择性地扩增T外周辅助细胞以促进同种抗体的产生

2020-02-16 QQY MedSci原创

缺血再灌注损伤(IRI)易于形成供体特异性抗体,这是导致慢性排斥反应和晚期同种异体移植物丢失的一个因素。研究人员通过使用拟人化的模型和患者样本来描述IRI和供体特异性抗体之间的相关机制。IRI通过Rab5-ZFYVE21-NIK轴诱导内皮细胞上的免疫球蛋白M-依赖性补体激活,组装NLRP3炎性小体,并上调ICOS-L和PD-L2。内皮细胞来源的白细胞介素-18 (IL-18)可选择性地扩增T细胞群

缺血再灌注损伤(IRI)易于形成供体特异性抗体,这是导致慢性排斥反应和晚期同种异体移植物丢失的一个因素。

研究人员通过使用拟人化的模型和患者样本来描述IRI和供体特异性抗体之间的相关机制。

IRI通过Rab5-ZFYVE21-NIK轴诱导内皮细胞上的免疫球蛋白M-依赖性补体激活,组装NLRP3炎性小体,并上调ICOS-L和PD-L2。内皮细胞来源的白细胞介素-18 (IL-18)可选择性地扩增T细胞群(CD4+CD45RO+PD-1hiICOS+CCR2+CXCR5-),展示了最近报道的T细胞外周辅助细胞的特征。该人群高表达IL-18R1,并促进体内供体特异性抗体对IL-18的应答。在临床表现为移植物功能延迟的IRI患者中,这些细胞为Ki-67+IL-18R1+,在体外IL-18的刺激作用下可扩增。

IRI促进内皮细胞中IL-18的表达,选择性地在同种异体移植物组织中扩增IL-18R1+ T外周辅助细胞,促进供者特异性抗体的形成。

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    2020-03-27 146e7531m58(暂无昵称)

    学习了新的观点,很好的平台

    0

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    2020-02-18 一叶知秋
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    2020-02-18 wangbingxhy

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