Hsp90 is involved in pseudorabies virus virion assembly via stabilizing major capsid protein VP5.
Hsp90 is involved in pseudorabies virus virion assembly via stabilizing major capsid protein VP5.
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Hsp90 通过稳定主要衣壳蛋白 VP5 参与伪狂犬病病毒病毒粒子组装。
DOI:
10.1016/j.virol.2020.10.013
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发表时间:
2020-11
期刊:
影响因子:
3.7
通讯作者:
Liu Zheng-Fei
中科院分区:
文献类型:
--
作者:
Zhang Wen-Jing;Wang Ren-Qi;Li Lin-Tao;Fu Wen;Chen Huan-Chun;Liu Zheng-Fei
Many viruses utilize molecular chaperone heat shock protein 90 (Hsp90) for protein folding and stabilization, however, the role of Hsp90 in herpesvirus lifecycle is obscure. Here, we provide evidence that Hsp90 participates in pseudorabies virus (PRV) replication. Viral growth kinetics assays show that Hsp90 inhibitor geldanamycin (GA) abrogates PRV replication at the post-penetration step. Transmission electron microscopy demonstrates that dysfunction of Hsp90 diminishes the quantity of PRV nucleocapsids. Overexpression and knockdown of Hsp90 suggest thatde novoHsp90 is involved in PRV replication. Mechanismly, dysfunction of Hsp90 inhibits PRV major capsid protein VP5 expression. Co-immunoprecipitation and indirect immunofluorescence assays indicate that Hsp90 interacts with VP5. Interestingly, Hsp70, a collaborator of Hsp90, also interacts with VP5, but doesn't affect PRV growth. Finally, inhibition of Hsp90 results in PRV VP5 degradation in a proteasome-dependent manner. Collectively, our data suggest that Hsp90 contributes to PRV virion assembly and replication via stabilization of VP5.
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