1887

Abstract

BmNPV infection induces nuclear vesicle-like structures and its Bm5 protein mediates the intranuclear lipid accumulation, which is thought to participate in the formation of nuclear vesicles. However, the relationship between viral-induced nuclear vesicles and Bm5 protein is still unclear. Here, our results indicated that BmNPV Bm5 protein participated in the baculovirus infection-induced nuclear vesicle-like structures' invagination thereby influencing the production of occlusion-derived virion (ODV) and occlusion body (OB). The process of nuclear vesicle-like structures' formation was dispensable for the transport or recruitment of ODV major envelope proteins, such as P74 and Bm14. Furthermore, baculovirus-induced nuclear F-actin might provide a direct mechanical force to mediate the scission of large vesicle-like structures from the nuclear membrane. Collectively, these findings illustrated a BmNPV Bm5 protein-induced nuclear membrane invagination pathway and revealed the function of nuclear vesicle-like structures in ODV production.

Funding
This study was supported by the:
  • Postdoctoral Research Foundation of China (Award 2021M702871)
    • Principle Award Recipient: XiangshuoKong
  • Natural Science Foundation of Zhejiang Province (Award Z20C170008)
    • Principle Award Recipient: XiaofengWu
  • National Natural Science Foundation of China (Award 32172793)
    • Principle Award Recipient: XiaofengWu
  • National Natural Science Foundation of China (Award 31972619)
    • Principle Award Recipient: XiaofengWu
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/content/journal/jgv/10.1099/jgv.0.001853
2023-05-15
2024-05-20
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