Journal
ENZYME AND MICROBIAL TECHNOLOGY
Volume 121, Issue -, Pages 1-7Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.enzmictec.2018.10.012
Keywords
BmCPV; Cell entry; Src kinase; Cellular signaling pathway
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Funding
- National Natural Science Foundation of China [31872424, 31272500, 31602007]
- National Basic Research Program of China (973 Program) [2012CB114600]
- Natural Science Foundation of Jiangsu Province [SBK2016042171]
- Priority Academic Program of Development of Jiangsu Higher Education Institutions
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Bombyx mari cytoplasmic polyhedrosis virus (BmCPV) is a non-enveloped dsRNA virus, which specifically infect the midgut epithelium of B. mori. BmCPV enters permissive cells via clathrin-dependent endocytosis employing beta 1 integrin mediated internalization. Until now, the cell entry mechanism of BmCPV has not been known clearly. Here, we investigated whether tyrosine-protein kinase Src64B-like is involved in the cell entry of BmCPV. The Src64B-Like gene was cloned and expressed in Escherichia cob (E. coif), and the recombinant protein Src64B-like was used to immunize mouse for preparation of anti-Src64B-like polyclonal antibody (pAb). After Src64B-like gene was silenced by RNAi, the infection of BmCPV was reduced by 59.48% +/- 2.18% and 92.22% +/- 1.12% in vitro and in vivo autonomously. Contrary to it, BmCPV infection could be enhanced by increasing the expression of Src64B-like. In addition, immunofluorescence assay showed that Src64B-like protein did not co-localize with BmCPV in the cultured BruN cells during viral infection. These results indicate that Src64B-like protein participates and plays an important role in the cell entry of BmCPV, but not contacting directly with BmCPV.
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