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Viruses 2010, 2(1), 298-313; doi:10.3390/v2010298
Review

Dual Role of p53 in Innate Antiviral Immunity

1
,
2
 and
2,*
1 Centro Nacional de Biotecnologia, CSIC, Darwin 3, Campus Universidad Autónoma, Madrid 28049, Spain 2 Department of Oncological Sciences, Mount Sinai School of Medicine, One Gustave L. Levy Place Box 1130, New York, NY 10029, USA
* Author to whom correspondence should be addressed.
Received: 1 September 2009 / Revised: 11 January 2010 / Accepted: 19 January 2010 / Published: 22 January 2010
(This article belongs to the Special Issue Interferon Antiviral Response and Viral Evasion)
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Abstract

Tumor suppressor p53 is widely known as ‘the guardian of the genome’ due to its ability to prevent the emergence of transformed cells by the induction of cell cycle arrest and apoptosis. However, recent studies indicate that p53 is also a direct transcriptional target of type I interferons (IFNs) and thus, it is activated by these cytokines upon viral infection. p53 has been shown to contribute to virus-induced apoptosis, therefore dampening the ability of a wide range of viruses to replicate and spread. Interestingly, recent studies also indicate that several IFN-inducible genes such as interferon regulatory factor 9 (IRF9), IRF5, IFN-stimulated gene 15 (ISG15) and toll-like receptor 3 (TLR3) are in fact, p53 direct transcriptional targets. These findings indicate that p53 may play a key role in antiviral innate immunity by both inducing apoptosis in response to viral infection, and enforcing the type I IFN response, and provide a new insight into the evolutionary reasons why many viruses encode p53 antagonistic proteins.
Keywords: p53; interferon; immunity; apoptosis p53; interferon; immunity; apoptosis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Rivas, C.; Aaronson, S.A.; Munoz-Fontela, C. Dual Role of p53 in Innate Antiviral Immunity. Viruses 2010, 2, 298-313.

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