A global map of the Zika virus phosphoproteome reveals host-driven regulation of viral budding

A global map of the Zika virus phosphoproteome reveals host-driven regulation of viral budding
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寨卡病毒磷酸化蛋白质组的全球图谱揭示了宿主驱动的病毒出芽调节

DOI:
10.1101/2021.11.24.469793
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发表时间:
2021
期刊:
--
影响因子:
--
通讯作者:
Manuelyan I
Manuelyan I
中科院分区:
--
文献类型:
--
作者:
Manuelyan I

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黄病毒是一种有包膜的正链RNA病毒,每年在人群中引起数百万例感染。尽管早在20世纪50年代就在人类中发现了寨卡病毒(ZIKV),但2015年它在南美洲的重新出现导致了全球健康危机。虽然黄病毒编码10种可以被宿主酶翻译后修饰的蛋白质,但关于黄病毒蛋白质组的翻译后修饰(PTM)知之甚少。我们使用质谱法来全面鉴定ZIKV蛋白质组上的宿主驱动的PTM。这种方法使我们能够在8种ZIKV蛋白中鉴定出43种PTM,包括几种在黄病毒属内高度保守的蛋白。值得注意的是,我们在ZIKV包膜蛋白上发现了两个磷酸化位点,这两个磷酸化位点对病毒繁殖具有重要的功能,并且似乎调节病毒出芽。此外,我们发现了115种与ZIKV蛋白相互作用的宿主激酶,并确定了博舒替尼(一种FDA批准的靶向ZIKV相互作用宿主激酶的酪氨酸激酶抑制剂)会损害ZIKV生长。因此,我们已经定义了ZIKV蛋白以及细胞相互作用激酶上宿主驱动的PTM的高分辨率图谱,揭示了ZIKV出芽的宿主驱动调节的新机制,并鉴定了FDA批准的ZIKV生长抑制剂。
Flaviviruses are enveloped, positive-strand RNA viruses that cause millions of infections in the human population annually. Although Zika virus (ZIKV) had been detected in humans as early as the 1950s, its reemergence in South America in 2015 resulted in a global health crisis. While flaviviruses encode 10 proteins that can be post-translationally modified by host enzymes, little is known regarding post-translational modifications (PTMs) of the flavivirus proteome. We used mass spectrometry to comprehensively identify host-driven PTMs on the ZIKV proteome. This approach allowed us to identify 43 PTMs across 8 ZIKV proteins, including several that are highly conserved within theFlavivirusgenus. Notably, we found two phosphosites on the ZIKV envelope protein that are functionally important for viral propagation and appear to regulate viral budding. Additionally, we discovered 115 host kinases that interacted with ZIKV proteins and determined that Bosutinib, an FDA-approved tyrosine kinase inhibitor that targets ZIKV interacting host kinases, impairs ZIKV growth. Thus, we have defined a high-resolution map of host-driven PTMs on ZIKV proteins as well as cellular interacting kinases, uncovered a novel mechanism of host driven-regulation of ZIKV budding, and identified an FDA-approved inhibitor of ZIKV growth.
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