Faculty of Pharmacy, Yasuda Women's University, 6-13-1, Yasuhigashi, Asaminamiku, Hiroshima, 731-0153, Japan.
Arch Virol. 2023 Apr 7;168(5):132. doi: 10.1007/s00705-023-05766-x.
Fluctuations in phospholipid composition in infected cells during influenza A virus replication were analyzed using two different susceptible host cell lines: H292 cells, exhibiting a rapid cytopathic effect, and A549 cells, exhibiting a retarded cytopathic effect. Microarray analysis demonstrated that A549 cells recognized influenza A virus invasion, expression of pathogen recognition genes was affected, and antiviral genes were activated. On the other hand, H292 cells did not display such an antiviral state, and in these cells, rapid virus amplification and a rapid cytopathic effect were observed. Levels of ceramide, diacylglycerol, and lysolipids were higher in virus-infected cells than in the corresponding mock-infected cells at the later stages of infection. The accumulation of these lipids in IAV-infected cells occurred together with viral replication. The relationship between the characteristic features of ceramide, diacylglycerol, and lysolipid in the plasma membrane, where enveloped viruses are released, and their role in viral envelope formation are discussed. Our results indicate that viral replication disturbs cellular lipid metabolism, with consequences for viral replication kinetics.
在流感 A 病毒复制过程中,受感染细胞中磷脂成分的波动变化,使用两种不同的易感宿主细胞系进行了分析:H292 细胞表现出快速的细胞病变效应,而 A549 细胞表现出延迟的细胞病变效应。微阵列分析表明,A549 细胞识别流感 A 病毒的入侵,病原体识别基因的表达受到影响,抗病毒基因被激活。另一方面,H292 细胞没有表现出这种抗病毒状态,在这些细胞中,观察到快速的病毒扩增和快速的细胞病变效应。在感染后期,感染病毒的细胞中的神经酰胺、二酰基甘油和溶血磷脂的水平高于相应的 mock 感染细胞。这些脂质在 IAV 感染细胞中的积累与病毒复制同时发生。讨论了在含有包膜病毒的释放的质膜中鞘脂、二酰基甘油和溶血磷脂的特征与它们在病毒包膜形成中的作用之间的关系。我们的结果表明,病毒复制扰乱了细胞脂质代谢,从而影响了病毒复制动力学。