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FEBS Lett. 2013 Sep 17;587(18):2965-71. doi: 10.1016/j.febslet.2013.08.006. Epub 2013 Aug 13.

Influenza NS1 interacts with p53 and alters its binding to p53-responsive genes, in a promoter-dependent manner.

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Laboratoire de Virologie et Pathologie Humaine VirPath, Equipe VirCell, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France.


The interplay between influenza A viruses (IAV) and p53 has only been reported in a limited number of studies, mainly focusing on the antiviral role of p53. We investigated the impact of IAV infection on p53 stability and transcriptional activity. Our results indicate that IAV-induced stabilization of p53 only partially correlates with modulation of p53 transcriptional activity measured during infection. Moreover, we show that the viral non-structural protein 1 (NS1) is able to inhibit p53 transcriptional activity, in a promoter-dependent manner. Based on these data, we propose that NS1 may contribute to p53-mediated cell fate decision during IAV infection.


Influenza virus; Non-structural protein NS1; Orthomyxoviridae; Transcription factor; p53

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