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Virology. 1985 Jan 15;140(1):192-6.

Interferon-induced protein Mx accumulates in nuclei of mouse cells expressing resistance to influenza viruses.


In mouse cells carrying the dominant influenza resistance allele Mx+ (but not in Mx- cells) interferon-alpha/beta (IFN) induces an efficient antiviral state against influenza viruses and, concomitantly, the synthesis of a 75,000-Da protein (protein Mx). Here, indirect immunofluorescence using monoclonal antibodies was used to demonstrate that protein Mx accumulates in the nucleus of IFN-treated Mx+ cells, suggesting a nuclear site of action. Protein Mx is present in the nucleus of untreated influenza virus-resistant macrophages freshly explanted from the peritoneal cavity of Mx+ mice but is lost with time in culture when peritoneal macrophages become permissive for influenza virus.

[Indexed for MEDLINE]

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