Cutting edge: Dexamethasone potentiates the responses of both regulatory T cells and B-1 cells to antigen immunization in the ApoE(-/-) mouse model of atherosclerosis.

Cutting edge: Dexamethasone potentiates the responses of both regulatory T cells and B-1 cells to antigen immunization in the ApoE(-/-) mouse model of atherosclerosis.
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DOI:
10.4049/jimmunol.1302469
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发表时间:
2014-07-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Zheng G
Zheng G
中科院分区:
其他
文献类型:
--
作者:
Chen A;Geng Y;Ke H;Constant L;Yan Z;Pan Y;Lee P;Tan I;Williams K;George S;Munirathinam G;Reardon CA;Getz GS;Wang B;Zheng G

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The immunosuppressant dexamethasone was previously shown to preferentially deplete CD4+ Teff cells while sparing Treg cells in vivo. In the present study, we show that it also preferentially depletes B-2 cells while sparing B-1 cells. In the ApoE−/− mouse model of atherosclerosis, where both Treg and B-1 cells are thought to play an atheroprotective role, we show that HSP60-targeted immunization in the presence of dexamethasone raises Ag-reactive Treg and B-1 cells concomitantly and reduces the severity of atherosclerosis. These results indicate that dexamethasone is an adjuvant that potentiates both the Treg and the B-1 responses to immunogens. This study shows for the first time that B-1 cells with the specificity for a disease-relevant Ag can be raised in vivo by immunization.
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