Tolerant anti-insulin B cells are effective APCs.
Tolerant anti-insulin B cells are effective APCs.
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DOI:
10.4049/jimmunol.1202104
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发表时间:
2013-03-15
期刊:
影响因子:
--
通讯作者:
Thomas JW
中科院分区:
文献类型:
--
作者:
Kendall PL;Case JB;Sullivan AM;Holderness JS;Wells KS;Liu E;Thomas JW
Autoreactive B lymphocytes that are not culled by central tolerance in the bone marrow frequently enter the peripheral repertoire in a state of functional impairment, termed anergy. These cells are recognized as a liability for autoimmunity, but their contribution to disease is not well-understood. Insulin-specific 125Tg B cells support T cell-mediated Type 1 diabetes (T1D) in nonobese diabetic (NOD) mice, despite being anergic to B cell mitogens and T cell dependent immunization. Using this model, the potential of anergic, autoreactive B cells to present antigen and activate T cells was investigated. The data show that: a) insulin is captured and rapidly internalized by 125Tg BCRs, b) these antigen-exposed B cells are competent to activate both experienced and naïve CD4+ T cells, c) anergic 125Tg B cells are more efficient than naïve B cells at activating T cells when antigen is limiting, and d) 125Tg B cells are competent to generate low-affinity insulin B chain epitopes necessary for activation of diabetogenic anti-insulin BDC12-4.1 T cells, indicating the pathological relevance of anergic B cells in T1D. Thus, phenotypically tolerant B cells that are retained in the repertoire may promote autoimmunity by driving activation and expansion of autoaggressive T cells via antigen-presentation.
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影响因子:
4.4
作者:
Kendall, Peggy L.;Yu, Guowu;Thomas, James W.
通讯作者:
Thomas, James W.
影响因子:
15.9
作者:
Hu, Chang-Yun;Rodriguez-Pinto, Daniel;Wen, Li
通讯作者:
Wen, Li
影响因子:
64.8
作者:
Nakayama, M;Abiru, N;Eisenbarth, GS
通讯作者:
Eisenbarth, GS
影响因子:
4.4
作者:
Hulbert, C;Riseili, B;Thomas, JW
通讯作者:
Thomas, JW
DOI:
10.1084/jem.20080611
发表时间:
2009-01-16
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Duty JA;Szodoray P;Zheng NY;Koelsch KA;Zhang Q;Swiatkowski M;Mathias M;Garman L;Helms C;Nakken B;Smith K;Farris AD;Wilson PC
通讯作者:
Wilson PC