RIG-I-like receptor-induced IRF3 mediated pathway of apoptosis (RIPA): a new antiviral pathway

doi:10.1007/s13238-016-0334-x

Protein Cell

2017, Vol. 8

Issue (3) : 165-168 https://doi.org/10.1007/s13238-016-0334-x

MINI-REVIEW

RIG-I-like receptor-induced IRF3 mediated pathway of apoptosis (RIPA): a new antiviral pathway

Saurabh Chattopadhyay¹(

),Ganes C. Sen²(

)

¹. Department of Medical Microbiology and Immunology, University of Toledo College of Medicine and Life Sciences, 3000 Arlington Avenue, Mailstop 1021, Toledo, OH 43614, USA
². Cleveland Clinic, Department of Immunology, 9500 Euclid Avenue, NE20, Cleveland, OH 44195, USA

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Abstract

The innate immune response is the first line of host defense to eliminate viral infection. Pattern recognition receptors in the cytosol, such as RIG-I-like receptors (RLR) and Nod-like receptors (NLR), and membrane bound Toll like receptors (TLR) detect viral infection and initiate transcription of a cohort of antiviral genes, including interferon (IFN) and interferon stimulated genes (ISGs), which ultimately block viral replication. Another mechanism to reduce viral spread is through RIPA, the RLR-induced IRF3-mediated pathway of apoptosis, which causes infected cells to undergo premature death. The transcription factor IRF3 can mediate cellular antiviral responses by both inducing antiviral genes and triggering apoptosis through the activation of RIPA. The mechanism of IRF3 activation in RIPA is distinct from that of transcriptional activation; it requires linear polyubiquitination of specific lysine residues of IRF3. Using RIPA-active, but transcriptionally inactive, IRF3 mutants, it was shown that RIPA can prevent viral replication and pathogenesis in mice.

Keywords RIPA IRF3 innate immunity

Corresponding Author(s): Saurabh Chattopadhyay,Ganes C. Sen

Issue Date: 21 March 2017

Cite this article:

Saurabh Chattopadhyay,Ganes C. Sen. RIG-I-like receptor-induced IRF3 mediated pathway of apoptosis (RIPA): a new antiviral pathway[J]. Protein Cell, 2017, 8(3): 165-168.

URL:

https://academic.hep.com.cn/pac/EN/10.1007/s13238-016-0334-x
https://academic.hep.com.cn/pac/EN/Y2017/V8/I3/165

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