The unfolded protein response element IRE1α senses bacterial proteins invading the ER to activate RIG-I and innate immune signaling.
The unfolded protein response element IRE1α senses bacterial proteins invading the ER to activate RIG-I and innate immune signaling.
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DOI:
10.1016/j.chom.2013.03.011
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发表时间:
2013-05-15
影响因子:
30.3
通讯作者:
Lencer WI
中科院分区:
文献类型:
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作者:
Cho JA;Lee AH;Platzer B;Cross BCS;Gardner BM;De Luca H;Luong P;Harding HP;Glimcher LH;Walter P;Fiebiger E;Ron D;Kagan JC;Lencer WI
The plasma membrane and all membrane-bound organelles except for the Golgi and endoplasmic reticulum (ER) are equipped with pattern-recognition molecules to sense microbes or their products and induce innate immunity for host defense. Here, we report that inositol-requiring-1α (IRE1α), an ER protein that signals in the unfolded protein response (UPR), is activated to induce inflammation by binding a portion of cholera toxin as it co-opts the ER to cause disease. Other known UPR transducers, including the IRE1α-dependent transcription factor XBP1, are dispensable for this signaling. The inflammatory response depends instead on the RNase activity of IRE1α to degrade endogenous mRNA, a process termed regulated IRE1α-dependent decay (RIDD) of mRNA. The mRNA fragments produced engage retinoic-acid inducible gene 1 (RIG-I), a cyto-solic sensor of RNA viruses, to activate NF-κB and interferon pathways. We propose IRE1α provides for a generalized mechanism of innate immune surveillance originating within the ER lumen.
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影响因子:
32.4
作者:
Loo YM;Gale M Jr
通讯作者:
Gale M Jr
影响因子:
4.5
作者:
Malathi, Krishnamurthy;Saito, Takeshi;Silverman, Robert H.
通讯作者:
Silverman, Robert H.
影响因子:
3.2
作者:
Dixit, Garima;Mikoryak, Carole;Draper, Rockford K.
通讯作者:
Draper, Rockford K.
影响因子:
11.4
作者:
Gonzalez, TN;Sidrauski, C;Walter, P
通讯作者:
Walter, P
DOI:
10.1038/nri2587
发表时间:
2009-08
期刊:
Nature reviews. Immunology
影响因子:
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作者:
通讯作者:
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