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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >HLA-G1-expressing antigen-presenting cells induce immunosuppressive CD4(+) T cells
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HLA-G1-expressing antigen-presenting cells induce immunosuppressive CD4(+) T cells

机译:表达HLA-G1的抗原呈递细胞诱导免疫抑制性CD4(+)T细胞

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摘要

We recently reported that HLA-G1-transfected antigen-presenting cells (HLA-G1(+) APCs) were capable of inhibiting alloproliferative responses. The aim of the present work was to further study the function and the mechanisms of action of HLA-G1(+) APCs. We show here that HLA-G1(+) APCs are immunoinhibitory cells that (i) inhibit the proliferation of CD4(+) T cells, (h) shed HLA-G1 molecules that might provide extra, non-antigen-specific, inhibitory or proapoptotic signals, (iii) induce CD4(+) T cell anergy, or at least long-term unresponsiveness, and (iv) cause the differentiation of CD4(+) T cells into suppressive cells. Thus, HLA-G(+) APCs might (i) be involved in the direct suppression of immune responses and (ii) contribute to long-term efficient immune escape or tolerance.
机译:我们最近报道了HLA-G1转染的抗原呈递细胞(HLA-G1(+)APCs)能够抑制同种增生反应。本工作的目的是进一步研究HLA-G1(+)APC的功能和作用机理。我们在这里显示HLA-G1(+)APC是一种免疫抑制细胞,其(i)抑制CD4(+)T细胞的增殖,(h)脱落的HLA-G1分子可能提供额外的,非抗原特异性的抑制性或促凋亡信号,(iii)诱导CD4(+)T细胞无反应,或至少长期无反应,并且(iv)导致CD4(+)T细胞分化为抑制性细胞。因此,HLA-G(+)APC可能(i)参与免疫反应的直接抑制,并且(ii)有助于长期有效的免疫逃逸或耐受。

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