Porcine IFI16 Negatively Regulates cGAS Signaling Through the Restriction of DNA Binding and Stimulation
Porcine IFI16 Negatively Regulates cGAS Signaling Through the Restriction of DNA Binding and Stimulation
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猪 IFI16 通过限制 DNA 结合和刺激负调节 cGAS 信号传导
DOI:
10.3389/fimmu.2020.01669
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发表时间:
2020-08
影响因子:
7.3
通讯作者:
Jianzhong Zhu
中科院分区:
文献类型:
--
作者:
Wanglong Zheng;Rongyun Zhou;Shuangjie Li;Shan He;Jia Luo;Meiqin Zhu;Nanhua Chen;Hongjun Chen;François Meurens;Jianzhong Zhu
The innate immunity DNA sensors have drawn much attention due to their significant importance against the infections with DNA viruses and intracellular bacteria. Among the multiple DNA sensors, IFI16, and cGAS are the two major ones, subjected to extensive studies. However, these two DNA sensors in livestock animals have not been well defined. Here, we studied the porcine IFI16 and cGAS, and their mutual relationship. We found that both enable STING-dependent signaling to downstream IFN upon DNA transfection and HSV-1 infection, and cGAS plays a major role in DNA signaling. In terms of their relationship, IFI16 appeared to interfere with cGAS signaling as deduced from both transfected and knockout cells. Mechanistically, IFI16 competitively binds with agonist DNA and signaling adaptor STING and thereby influences second messenger cGAMP production and downstream gene transcription. Furthermore, the HIN2 domain of porcine IFI16 harbored most of its activity and mediated cGAS inhibition. Thus, this study provides a unique insight into the porcine DNA sensing system.
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影响因子:
16
作者:
Dunphy G;Flannery SM;Almine JF;Connolly DJ;Paulus C;Jønsson KL;Jakobsen MR;Nevels MM;Bowie AG;Unterholzner L
通讯作者:
Unterholzner L
影响因子:
30.5
作者:
通讯作者:
--
DOI:
10.4049/jimmunol.1402764
发表时间:
2015-04-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Storek KM;Gertsvolf NA;Ohlson MB;Monack DM
通讯作者:
Monack DM
影响因子:
6.4
作者:
Diner BA;Lum KK;Toettcher JE;Cristea IM
通讯作者:
Cristea IM
影响因子:
3.7
作者:
Knipe, David M.
通讯作者:
Knipe, David M.