Acetylation Blocks cGAS Activity and Inhibits Self-DNA-Induced Autoimmunity.
Acetylation Blocks cGAS Activity and Inhibits Self-DNA-Induced Autoimmunity.
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乙酰化可阻断 cGAS 活性并抑制自身 DNA 诱导的自身免疫
DOI:
10.1016/j.cell.2019.01.016
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发表时间:
2019-03-07
期刊:
影响因子:
64.5
通讯作者:
Li T
中科院分区:
文献类型:
--
作者:
Dai J;Huang YJ;He X;Zhao M;Wang X;Liu ZS;Xue W;Cai H;Zhan XY;Huang SY;He K;Wang H;Wang N;Sang Z;Li T;Han QY;Mao J;Diao X;Song N;Chen Y;Li WH;Man JH;Li AL;Zhou T;Liu ZG;Zhang XM;Li T
The presence of DNA in the cytoplasm is normally a sign of microbial infections and is quickly detected by cyclic GMP-AMP synthase (cGAS) to elicit anti-infection immune responses. However, chronic activation of cGAS by self-DNA leads to severe autoimmune diseases for which no effective treatment is available yet. Here we report that acetylation inhibits cGAS activation and that the enforced acetylation of cGAS by aspirin robustly suppresses self-DNA-induced autoimmunity. We find that cGAS acetylation on either Lys384, Lys394, or Lys414 contributes to keeping cGAS inactive. cGAS is deacetylated in response to DNA challenges. Importantly, we show that aspirin can directly acetylate cGAS and efficiently inhibit cGAS-mediated immune responses. Finally, we demonstrate that aspirin can effectively suppress self-DNA-induced autoimmunity in Aicardi-Goutières syndrome (AGS) patient cells and in an AGS mouse model. Thus, our study reveals that acetylation contributes to cGAS activity regulation and provides a potential therapy for treating DNA-mediated autoimmune diseases.
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影响因子:
64.8
作者:
通讯作者:
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影响因子:
56.9
作者:
Choudhary, Chunaram;Kumar, Chanchal;Mann, Matthias
通讯作者:
Mann, Matthias
影响因子:
56.9
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KOPP, E;GHOSH, S
通讯作者:
GHOSH, S
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di Palma, Antonella;Matarese, Giuseppe;Ricchi, Paolo
通讯作者:
Ricchi, Paolo
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1.8
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HUTT, AJ;CALDWELL, J;SMITH, RL
通讯作者:
SMITH, RL