Human ADAR1 Prevents Endogenous RNA from Triggering Translational Shutdown.
Human ADAR1 Prevents Endogenous RNA from Triggering Translational Shutdown.
复制标题
DOI:
10.1016/j.cell.2017.12.038
复制
发表时间:
2018-02-08
期刊:
影响因子:
64.5
通讯作者:
Rice CM
中科院分区:
文献类型:
--
作者:
Chung H;Calis JJA;Wu X;Sun T;Yu Y;Sarbanes SL;Dao Thi VL;Shilvock AR;Hoffmann HH;Rosenberg BR;Rice CM
Type I interferon is produced when host sensors detect foreign nucleic acids, but how sensors differentiate self from nonself nucleic acids, such as double-stranded RNA (dsRNA), is incompletely understood. Mutations in ADAR1, an adenosine-to-inosine editing enzyme of dsRNA, cause Aicardi-Goutieres syndrome, an autoinflammatory disorder associated with spontaneous interferon production and neurologic sequelae. We generated ADAR1 knockout human cells to explore ADAR1 substrates and function. ADAR1 primarily edited Alu elements in RNA polymerase II (pol II) transcribed mRNAs, but not putative pol III transcribed Alus. During the IFN response, ADAR1 blocked translational shutdown by inhibiting hyperactivation of PKR, a dsRNA sensor. ADAR1 dsRNA binding and catalytic activities were required to fully prevent endogenous RNA from activating PKR. Remarkably, ADAR1 knockout neuronal progenitor cells exhibited MDA5 (dsRNA sensor)-dependent spontaneous interferon production, PKR activation, and cell death. Thus, human ADAR1 regulates sensing of self versus nonself RNA, allowing pathogen detection while avoiding autoinflammation. The human RNA editing enzyme ADAR1 prevents endogenous RNA from activating innate immune sensors (PKR, MDA5), which allows efficient translation during the IFN response.
登录
查看更多内容
影响因子:
23.9
作者:
Gonzalez, Federico;Zhu, Zengrong;Shi, Zhong-Dong;Lelli, Katherine;Verma, Nipun;Li, Qing V.;Huangfu, Danwei
通讯作者:
Huangfu, Danwei
影响因子:
4.9
作者:
Bao W;Kojima KK;Kohany O
通讯作者:
Kohany O
DOI:
10.1073/pnas.1005320107
发表时间:
2010-08-10
影响因子:
11.1
作者:
Furic, Luc;Rong, Liwei;Sonenberg, Nahum
通讯作者:
Sonenberg, Nahum
影响因子:
5.4
作者:
Liu, Y;Samuel, CE
通讯作者:
Samuel, CE
影响因子:
16.6
作者:
Nishikura K
通讯作者:
Nishikura K