ZBP1/DAI ubiquitination and sensing of influenza vRNPs activate programmed cell death.
ZBP1/DAI ubiquitination and sensing of influenza vRNPs activate programmed cell death.
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DOI:
10.1084/jem.20170550
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发表时间:
2017-08-07
期刊:
影响因子:
--
通讯作者:
Kanneganti TD
中科院分区:
文献类型:
--
作者:
Kesavardhana S;Kuriakose T;Guy CS;Samir P;Malireddi RKS;Mishra A;Kanneganti TD
The activation mechanism of ZBP1/DAI to regulate virus-induced programmed cell death is not known. Kesavardhana et al. show that ZBP1 senses viral ribonucleoproteins to induce cell death upon influenza A virus infection. Apical activation of RIG-I–IFNAR signaling to upregulate ZBP1 and influenza-induced ZBP1 ubiquitination are critical events for ZBP1 activation. Innate sensing of influenza virus infection induces activation of programmed cell death pathways. We have recently identified Z-DNA–binding protein 1 (ZBP1) as an innate sensor of influenza A virus (IAV). ZBP1-mediated IAV sensing is critical for triggering programmed cell death in the infected lungs. Surprisingly, little is known about the mechanisms regulating ZBP1 activation to induce programmed cell death. Here, we report that the sensing of IAV RNA by retinoic acid inducible gene I (RIG-I) initiates ZBP1-mediated cell death via the RIG-I–MAVS–IFN-β signaling axis. IAV infection induces ubiquitination of ZBP1, suggesting potential regulation of ZBP1 function through posttranslational modifications. We further demonstrate that ZBP1 senses viral ribonucleoprotein (vRNP) complexes of IAV to trigger cell death. These findings collectively indicate that ZBP1 activation requires RIG-I signaling, ubiquitination, and vRNP sensing to trigger activation of programmed cell death pathways during IAV infection. The mechanism of ZBP1 activation described here may have broader implications in the context of virus-induced cell death.
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DOI:
10.1038/nri3665
发表时间:
2014-05
期刊:
Nature reviews. Immunology
影响因子:
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作者:
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DOI:
10.1093/bioinformatics/btt495
发表时间:
2013-11-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
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作者:
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影响因子:
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