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  2. Volume 2, Issue 4
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Online ISSN: 2515-8260

Volume2, Issue4

Interferon gamma allows long-term maintenance of VZV-infected neurons in vitro

    Baird NL Bowlin JL Cohrs RJ Gilden D

European Journal of Molecular & Clinical Medicine, 2015, Volume 2, Issue 4, Pages 126-127

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Abstract

Varicella zoster virus (VZV) is a neurotropic alphaherpesvirus. During primary infection, VZV causes varicella (chicken pox), after which the virus go latent in ganglionic neurons along the entire neuraxis before reactivating decades later to cause zoster (shingles). Interferon gamma (IFNγ), produced during viral infection, stimulates transcription of genes that mediate antiviral responses. Herein, it was tested whether IFNγ treatment of human neurons inhibits VZV infection of human neurons in vitro. Infected neurons not treated with IFNγ developed a cytopathic effect in 4 weeks, during which time VZV DNA increased 7-fold and viral RNA accumulated. Infected neurons cultured in the presence of IFNγ for 8 weeks or infected neurons cultured in IFNγ for 4 weeks followed by cytokine removal for an additional 4 weeks had only a 2.8- and 3.6-fold increase of viral DNA, respectively in the 8 weeks post-infection. Furthermore, levels of VZV transcripts did not increase between 4 and 8 weeks post-infection when IFNγ was removed at 4 weeks post-infection, and even began to decrease when the cultures were maintained in IFNγ for the entire 8 weeks. In accordance with reduced DNA accumulation and mRNA levels when infected neurons were maintained in IFNγ, less CPE was evident at 8 weeks post-infection compared to cultures which had IFNγ removed at 4 weeks post-infection.
Keywords:
    Replication of VZV DNA and transcription of viral genes was inhibited by IFNγ and the extent of virus gene expression in IFNγ
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(2015). Interferon gamma allows long-term maintenance of VZV-infected neurons in vitro. European Journal of Molecular & Clinical Medicine, 2(4), 126-127.
Baird NL; Bowlin JL; Cohrs RJ; Gilden D. "Interferon gamma allows long-term maintenance of VZV-infected neurons in vitro". European Journal of Molecular & Clinical Medicine, 2, 4, 2015, 126-127.
(2015). 'Interferon gamma allows long-term maintenance of VZV-infected neurons in vitro', European Journal of Molecular & Clinical Medicine, 2(4), pp. 126-127.
Interferon gamma allows long-term maintenance of VZV-infected neurons in vitro. European Journal of Molecular & Clinical Medicine, 2015; 2(4): 126-127.
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