Lee Katherine S, Cool Carlyne D, van Dyk Linda F
Department of Microbiology, University of Colorado Denver, School of Medicine, Aurora, Colorado, USA.
J Virol. 2009 Nov;83(21):11397-401. doi: 10.1128/JVI.00989-09. Epub 2009 Aug 26.
Gamma interferon (IFN-gamma) is critical for the control of chronic infection with murine gammaherpesvirus 68 (gammaHV68). Current data indicate that IFN-gamma has a lesser role in the control of acute replication of gammaHV68. Here, we show that IFN-gamma-deficient mice on the BALB/c genetic background poorly control acute viral replication and succumb to early death by acute pneumonia. Notably, this acute, lethal pneumonia was dependent not only on the viral dose, but also on specific viral genes including the viral cyclin gene, previously identified to be important in promoting optimal chronic infection and reactivation from latency.
γ干扰素(IFN-γ)对于控制小鼠γ疱疹病毒68(γHV68)的慢性感染至关重要。目前的数据表明,IFN-γ在控制γHV68的急性复制方面作用较小。在此,我们发现,BALB/c遗传背景下的IFN-γ缺陷小鼠对急性病毒复制的控制不佳,并因急性肺炎过早死亡。值得注意的是,这种急性致死性肺炎不仅取决于病毒剂量,还取决于特定的病毒基因,包括病毒细胞周期蛋白基因,该基因先前已被确定在促进最佳慢性感染和从潜伏状态重新激活方面很重要。