Cutting Edge: BAFF Overexpression Reduces Atherosclerosis via TACI-Dependent B Cell Activation.

Cutting Edge: BAFF Overexpression Reduces Atherosclerosis via TACI-Dependent B Cell Activation.
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DOI:
10.4049/jimmunol.1601198
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发表时间:
2016-12-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Rawlings DJ
Rawlings DJ
中科院分区:
其他
文献类型:
--
作者:
Jackson SW;Scharping NE;Jacobs HM;Wang S;Chait A;Rawlings DJ

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Patients with SLE exhibit accelerated atherosclerosis, a chronic inflammatory disease of the arterial wall. The impact of B cells in atherosclerosis is controversial, with both protective and pathogenic roles described. For example, natural IgM binding conserved oxidized lipid epitopes protect against atherosclerosis, while anti-oxidized low-density lipoprotein (oxLDL) IgG likely promotes disease. Since B cell activating factor of the TNF family (BAFF) promotes B cell class-switch recombination and humoral autoimmunity, we hypothesized that excess BAFF would accelerate atherosclerosis. In contrast, BAFF overexpression markedly reduced hypercholesterolemia and atherosclerosis in hyperlipidemic mice. BAFF-mediated atheroprotection required B cells and was associated with increased protective anti-oxLDL IgM. Surprisingly, high-titer anti-oxLDL IgM production and reduced atherosclerosis was dependent on the BAFF family receptor transmembrane activator and CAML interactor (TACI). In summary, we identified a novel role for B cell-specific, BAFF-dependent TACI signals in atherosclerosis pathogenesis, of particular relevance to the use of BAFF-targeted therapies in SLE.
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尖端:BAFF通过过渡B细胞的TACI依赖性激活促进自身抗体的产生。
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