Abstract
Aim: IFN-γ plays an important role in control of the old world alphavirus infection. However, the role of IFN-γ in the infection by the new world alphaviruses is not well characterized. Materials & methods: Ad5-mIFN-γ, a recombinant, replication-deficient human adenovirus, was constructed to express mouse IFN-γ (mIFN-γ) and a mouse, lethal challenge model of the new world alphavirus western equine encephalitis virus (WEEV) was used. Results: A single-dose injection of Ad5-mIFN-γ produced a high level of mIFN-γ in mice. Cells inoculated with Ad5-mIFN-γ restricted the replication of WEEV. A single-dose injection of Ad5-mIFN-γ delayed the WEEV infection and extended the survival time in mice. Conclusion: IFN-γ restricts the WEEV infection.
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