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Virology. 1995 Jul 10;210(2):508-11.

Mechanism of interferon action: double-stranded RNA-specific adenosine deaminase from human cells is inducible by alpha and gamma interferons.

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  • 1Department of Biological Sciences, University of California, Santa Barbara 93106, USA.


Treatment of human amnion U cells with interferon increased the steady state level of mRNA encoding the double-stranded (ds) RNA-specific adenosine deaminase (AdD) as measured by Northern gel-blot analysis. A single major dsRNA-specific AdD transcript of approximately 6.7 kb was detected; the transcript was induced by both interferon-alpha (IFN-alpha) and interferon-gamma (IFN-gamma). Likewise, Western immunoblot analysis revealed that a 150-kDa protein recognized by antiserum prepared against recombinant dsRNA-specific AdD was increased in the human amnion U and neuroblastoma SH-SY5Y cell lines treated with interferon. Both IFN-alpha and IFN-gamma induced the 150-kDa protein. These results, which establish that dsRNA-specific AdD is an IFN-inducible protein in human cells, have implications regarding the possible role of interferon in persistent viral infections.

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