Epigenetic regulation in B-cell maturation and its dysregulation in autoimmunity.

Epigenetic regulation in B-cell maturation and its dysregulation in autoimmunity.
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B 细胞成熟中的表观遗传调控及其在自身免疫中的失调。

DOI:
10.1038/cmi.2017.133
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发表时间:
2018-07
影响因子:
24.1
通讯作者:
Lu Q
Lu Q
中科院分区:
医学1区
文献类型:
--
作者:
Wu H;Deng Y;Feng Y;Long D;Ma K;Wang X;Zhao M;Lu L;Lu Q

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B细胞在自身免疫性疾病的起始和加速中具有关键作用,尤其是由自身抗体介导的那些。在外周淋巴系统中,成熟B细胞被自身或/和外来抗原以及来自辅助T细胞的信号激活,以分化成记忆B细胞或产生抗体的浆细胞。越来越多的证据表明,表观遗传调控调节体细胞超突变和类转换DNA重组过程中的B细胞活化和分化。这些复杂的调节过程中的任何异常都可能导致异常抗体产生,导致自身免疫性发病机制,如系统性红斑狼疮。新一代测序、单细胞测序和DNA甲基化测序等先进现代技术产生的新知识使我们能够更好地了解B细胞生物学及其在自身免疫发展中的作用。本文就表观遗传修饰在B细胞活化和分化中的作用,特别是在自身免疫性疾病如狼疮、类风湿性关节炎和1型糖尿病中的作用作一综述。
B cells have a critical role in the initiation and acceleration of autoimmune diseases, especially those mediated by autoantibodies. In the peripheral lymphoid system, mature B cells are activated by self or/and foreign antigens and signals from helper T cells for differentiating into either memory B cells or antibody-producing plasma cells. Accumulating evidence has shown that epigenetic regulations modulate somatic hypermutation and class switch DNA recombination during B-cell activation and differentiation. Any abnormalities in these complex regulatory processes may contribute to aberrant antibody production, resulting in autoimmune pathogenesis such as systemic lupus erythematosus. Newly generated knowledge from advanced modern technologies such as next-generation sequencing, single-cell sequencing and DNA methylation sequencing has enabled us to better understand B-cell biology and its role in autoimmune development. Thus this review aims to summarize current research progress in epigenetic modifications contributing to B-cell activation and differentiation, especially under autoimmune conditions such as lupus, rheumatoid arthritis and type 1 diabetes.
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