Comprehensive analysis of host gene expression in Autographa californica nucleopolyhedrovirus-infected Spodoptera frugiperda cells

• Published in: Virology (New York, N.Y.) Vol. 412; no. 1; pp. 167 - 178
• Main Authors: Salem, Tamer Z, Zhang, Fengrui, Xie, Yan, Thiem, Suzanne M
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 30.03.2011
• Subjects: AcMNPV; Animals; Baculovirus; Cell Line; DAVID; Gene Expression Profiling; Host genes; Host-Pathogen Interactions; Hsp 70; Infectious Disease; Microarray; Microarray Analysis; Nucleopolyhedrovirus - pathogenicity; qRT-PCR; Sf21 cells; Spodoptera - virology; Time Factors; Transcriptome; Hsp 70; Host genes; qRT-PCR; Transcriptome; DAVID; AcMNPV; Microarray; Baculovirus; Sf21 cells
• ISSN: 0042-6822; 1096-0341
• DOI: 10.1016/j.virol.2011.01.006

Abstract Autographa californica multicapsid nucleopolyhedrovirus (AcMNPV) is the best-studied baculovirus and most commonly used virus vector for baculovirus expression vector systems. The effect of AcMNPV infection on host cells is incompletely understood. A microarray based on Spodoptera frugiperda ESTs was used to investigate the impact of AcMNPV on host gene expression in cultured S. frugiperda , Sf21 cells. Most host genes were down-regulated over the time course of infection, although a small number were up-regulated. The most highly up-regulated genes encoded heat shock protein 70s and several poorly characterized proteins. Regulated genes with the highest score identified by functional annotation clustering included primarily products required for protein expression and trafficking in the ER and golgi. All were significantly down-regulated by approximately 12 h post-infection. Microarray data were validated by qRT-PCR. This study provides the first comprehensive host transcriptome overview of Sf21 cells during AcMNPV infection.