Immune Tolerance to Apoptotic Self Is Mediated Primarily by Regulatory B1a Cells.
Immune Tolerance to Apoptotic Self Is Mediated Primarily by Regulatory B1a Cells.
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对凋亡自我的免疫耐受性主要由调节性B1A细胞介导。
DOI:
10.3389/fimmu.2017.01952
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发表时间:
2017
影响因子:
7.3
通讯作者:
Gray M
中科院分区:
文献类型:
--
作者:
Miles K;Simpson J;Brown S;Cowan G;Gray D;Gray M
The chronic autoimmune inflammatory diseases, systemic lupus erythematosus and Sjogren’s syndrome, develop when tolerance to apoptotic cells (ACs) is lost. We have previously reported that this tolerance is maintained by innate-like, IL-10 secreting regulatory B cells. Two questions remained. First, do these regulatory B cells belong predominantly to a single subset of steady-state B cells and second, what is their specificity? We report here that innate-like B cells with markers characteristic for B1a cells (CD43+veCD19hiCD5+veIgMhiIgDlo) constitute 80% of splenic and 96% of peritoneal B cells that respond to ACs by secreting IL-10. AC responsive B1a cells secrete self-reactive natural antibodies (NAbs) and IL-10, which is augmented by toll-like receptor (TLR) 7 or TLR9 stimulation. In so doing, they both accelerate the clearance of dying cells by macrophages and inhibit their potential to mount proinflammatory immune responses. While B1a cells make prolonged contact with ACs, they do not require TIM1 or complement to mediate their regulatory function. In an animal model of neural inflammation (experimental autoimmune encephalomyelitis), just 105 activated B1a B cells was sufficient to restrain inflammation. Activated B1a B cells also induced antigen-specific T cells to secrete IL-10. Hence, regulatory B1a cells specifically recognize and augment tolerance to apoptotic self via IL-10 and NAbs; but once activated, can also prevent autoimmune mediated inflammation.
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DOI:
10.4049/jimmunol.0804191
发表时间:
2009-05-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Chen Y;Park YB;Patel E;Silverman GJ
通讯作者:
Silverman GJ
DOI:
10.4049/jimmunol.1300649
发表时间:
2013-09-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Maseda D;Candando KM;Smith SH;Kalampokis I;Weaver CT;Plevy SE;Poe JC;Tedder TF
通讯作者:
Tedder TF
影响因子:
5.4
作者:
Choi, Youn Soo;Dieter, Jacquelyn A.;Rothaeusler, Kristina;Luo, Zheng;Baumgarth, Nicole
通讯作者:
Baumgarth, Nicole
影响因子:
8.7
作者:
Freeman GJ;Casasnovas JM;Umetsu DT;DeKruyff RH
通讯作者:
DeKruyff RH
影响因子:
4.4
作者:
Evans, Jamie G.;Chavez-Rueda, Karina A.;Mauri, Claudia
通讯作者:
Mauri, Claudia