Requirement for autophagy in the long-term persistence but not initial formation of memory B cells.

Requirement for autophagy in the long-term persistence but not initial formation of memory B cells.
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在长期持久性中自噬的需求,而不是记忆B细胞的初始形成。

DOI:
10.4049/jimmunol.1403001
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发表时间:
2015-03-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Wang J
Wang J
中科院分区:
其他
文献类型:
--
作者:
Chen M;Kodali S;Jang A;Kuai L;Wang J

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抗原特异性记忆B细胞的长期维持需要自噬。然而,自噬是否对记忆B细胞的初始形成也很重要仍不清楚。在这里,我们表明,新产生的记忆B细胞不显示积极的自噬,但能够形成抗体分泌细胞后,再与抗原的挑战。在记忆B细胞最初形成后,随着时间的推移,自噬增加。自噬基因的表达和记忆B细胞中主动自噬的发展需要参与自噬的转录因子的表达,而不是DNA甲基化引起的表观遗传调控的变化。这表明自噬对于记忆B细胞的初始生成并不关键,但对于其长期持续存在是必需的。提示在记忆B细胞维持阶段,促进自噬以改善抗体依赖性免疫记忆更为有效。
Autophagy is required for the long-term maintenance of antigen-specific memory B cells. However, whether autophagy is also important for the initial formation of memory B cells remains unclear. Here we show that newly generated memory B cells do not display active autophagy, but are capable of forming antibody secreting cells after re-challenge with antigens. Increases in autophagy took place over time after the initial formation of memory B cells. The expression of transcription factors involved in autophagy, but not changes in epigenetic regulation by DNA methylation, was required for autophagy gene expression and the development of active autophagy in memory B cells. This indicates that autophagy is not critical for the initial generation of memory B cells, but is required for their long-term persistence. Our results suggest that promoting autophagy to improve antibody-dependent immunological memory is more effective during memory B cell maintenance stage.
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发表时间: 2011-08-26
期刊: Science (New York, N.Y.)
影响因子: --
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