Anti-CD45RB/anti-TIM-1-induced tolerance requires regulatory B cells.

Anti-CD45RB/anti-TIM-1-induced tolerance requires regulatory B cells.
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DOI:
10.1111/j.1600-6143.2012.04055.x
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发表时间:
2012-08
期刊:
American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons
影响因子:
--
通讯作者:
Markmann JF
Markmann JF
中科院分区:
其他
文献类型:
--
作者:
Lee KM;Kim JI;Stott R;Soohoo J;O'Connor MR;Yeh H;Zhao G;Eliades P;Fox C;Cheng N;Deng S;Markmann JF

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B细胞在移植耐受中的作用尚不清楚。虽然B细胞耗尽通常会延长移植物的存活时间,但有时它会导致更快的排斥反应,这表明B细胞可能具有调节活性。我们先前证明,抗CD45RB抗体诱导的耐受需要受体B细胞。在此,我们证明了抗CD45RB抗体和抗TIM-1抗体具有协同作用,在小鼠胰岛移植模型中诱导了所有受体的耐受。这种效应依赖于受体B细胞的存在,需要B细胞IL-10的活性,并且是抗原特异性的。这些数据表明,存在通过IL-10依赖的途径促进耐受性的调节性B细胞群。
The role of B cells in transplant tolerance remains unclear. Although B cell depletion often prolongs graft survival, sometimes it results in more rapid rejection, suggesting that B cells may have regulatory activity. We previously demonstrated that tolerance induction by anti-CD45RB antibody requires recipient B cells. Here we show that anti-CD45RB in combination with anti-TIM-1 antibody has a synergistic effect, inducing tolerance in all recipients in a mouse islet allograft model. This effect depends on the presence of recipient B cells, requires B cell IL-10 activity, and is antigen-specific. These data suggest the existence of a regulatory B cell population that promotes tolerance via an IL-10-dependent pathway.
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