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- Identification and Characterization of Host Factors Interacting with Bombyx mori Nucleopolyhedrovirus ORF8
- WonKyung Kang , Susumu Katsuma , Noriko Matsuda-Imai , Masaaki Kurihara , Toyoshi Yoshiga , Toru Shimada , Shogo Matsumoto
- J. Microbiol. 2012;50(3):469-477. Published online June 30, 2012
- DOI: https://doi.org/10.1007/s12275-012-2010-z
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Abstract
- The orf8 gene (Bm8) in Bombyx mori nucleopolyhedrovirus (BmNPV) is one of 17 genes unique to group I NPVs and is expressed as an early gene. We have reported that Bm8 may play an important role during viral infection and that Bm8 protein co-localized with IE1 to specific nuclear foci throughout infection. It was also demonstrated that both IE1 and BmNPV hr facilitate this localization of Bm8. To investigate further, host proteins interacting with Bm8 were screened using a yeast two-hybrid system. We identified 6 host clones as Bm8-interacting partners from three cDNA libraries derived from BmN cells or B. mori larvae. Further assays showed that the N-terminal region of Bm8 is important for the interaction with most host clones and that two of the clones can associate with IE1. Cloning and sequencing of full-length cDNAs revealed that most of the clones potentially encode either membrane-bound proteins or secreted proteins. Quantitative RT-PCR analysis revealed that some of these host genes were slightly induced during the early stage of infection in BmN cells, and that the expression of all genes was markedly reduced during the late stage of infection. Generation of mutant BmNPVs over-expressing these host genes also identified a gene that potentially functions as a negative factor during BmNPV infection. These features of Bm8-interacting host proteins strongly support that Bm8 is a multifunctional protein involved in multiple signaling pathways in host cells.
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Citations
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- Inhibitory role of the Bm8 protein in the propagation of Bombyx mori nucleopolyhedrovirus
Hiroyuki Hikida, Ryuhei Kokusho, Jun Kobayashi, Toru Shimada, Susumu Katsuma
Virus Research.2018; 249: 124. CrossRef - Genome-wide investigation of transcription factors provides insights into transcriptional regulation in Plutella xylostella
Qian Zhao, Dongna Ma, Yuping Huang, Weiyi He, Yiying Li, Liette Vasseur, Minsheng You
Molecular Genetics and Genomics.2018; 293(2): 435. CrossRef - SWATH‐based quantitative proteomics reveals the mechanism of enhanced Bombyx mori nucleopolyhedrovirus‐resistance in silkworm reared on UV‐B treated mulberry leaves
Jin Hu, Wei Zhu, Yaohan Li, Qijie Guan, Haijian Yan, Jiaojiao Yu, Zhirong Fu, Xingmeng Lu, Jingkui Tian
PROTEOMICS.2017;[Epub] CrossRef
- Inhibitory role of the Bm8 protein in the propagation of Bombyx mori nucleopolyhedrovirus
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