Itaconate inhibits TET DNA dioxygenases to dampen inflammatory responses.
Itaconate inhibits TET DNA dioxygenases to dampen inflammatory responses.
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衣康酸抑制 TET DNA 双加氧酶以抑制炎症反应
DOI:
10.1038/s41556-022-00853-8
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发表时间:
2022-03
影响因子:
21.3
通讯作者:
中科院分区:
文献类型:
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作者:
As one of the highest induced genes in activated macrophages, immune-responsive gene 1 (IRG1) encodes a mitochondrial metabolic enzyme catalysing the production of itaconic acid (ITA). While ITA has an anti-inflammatory property, the underlying mechanisms are not fully understood. Here, we show that ITA is a potent inhibitor of the TET family DNA dioxygenases. ITA binds to the same site in TET2 where the co-substrate α-ketoglutarate (α-KG) binds, inhibiting TET2 catalytic activity. Lipopolysaccharides (LPS) treatment, which induces Irg1 expression and ITA accumulation, inhibits Tet activity in macrophages. Transcriptome analysis reveals TET2 is a major target of ITA in suppressing LPS-induced genes, including those regulated by NF-κB and STAT signaling pathways. In vivo, ITA decreases 5hmC level, reduces LPS-induced acute pulmonary edema, lung and liver injury, and protects mice against lethal endotoxaemia depending on the catalytic activity of Tet2. Our study thus identifies ITA as an immune modulatory metabolite that selectively inhibits TET enzymes to dampen the inflammatory responses.
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影响因子:
29
作者:
Lampropoulou V;Sergushichev A;Bambouskova M;Nair S;Vincent EE;Loginicheva E;Cervantes-Barragan L;Ma X;Huang SC;Griss T;Weinheimer CJ;Khader S;Randolph GJ;Pearce EJ;Jones RG;Diwan A;Diamond MS;Artyomov MN
通讯作者:
Artyomov MN
影响因子:
39.3
作者:
Liu T;Zhang L;Joo D;Sun SC
通讯作者:
Sun SC
影响因子:
4
作者:
Alexander, Eva;Hildebrand, Dominic G.;Essmann, Frank
通讯作者:
Essmann, Frank
影响因子:
1.2
作者:
Lee, Minjung;Zhou, Yubin;Huang, Yun
通讯作者:
Huang, Yun
影响因子:
82.9
作者:
通讯作者:
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