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在登革热病毒复制中定义Hsp70子网络,揭示了在弗拉维病毒感染中的关键脆弱性

Shuhei Taguwa¹, Kevin Maringer², Xiaokai Li³

¹Department of Biology and Genetics, Stanford University, Stanford, CA 94305, USA.

|November 20, 2015

概括

这项研究揭示了Hsp70护送网络如何控制登革热病毒的复制. 通过抑制剂JG40向该网络提供了针对黄病毒的广泛抗病毒疗法的有希望的策略.

科学领域:

分子生物学
病毒学
细胞生物学

背景情况:

病毒复制依赖宿主细胞机械,提供潜在的治疗点.
在维持细胞蛋白质平衡方面,Hsp70陪伴网络起着至关重要的作用.
了解病毒与宿主的相互作用可以揭示新的抗病毒策略.

研究的目的:

阐明Hsp70护送网络在登革热病毒生命周期中的具体作用.
识别与病毒过程有关的独特的Hsp70异型及其DNAJ辅因子.
评估Hsp70抑制剂对登革热和其他黄病毒的治疗潜力.

主要方法:

研究了在登革热病毒感染期间细胞质Hsp70异型和9个DNAJ辅因子的功能.
使用一种全性Hsp70抑制剂,JG40,以评估其抗病毒功效.
在人类初级血细胞中对各种登革热血清型和其他黄病毒进行了测试.

主要成果:

特定的Hsp70异型和DNAJ辅因子 (DnaJB11,DnaJB6) 对于登革热病毒生命周期的不同阶段至关重要,包括进入,RNA复制和病毒生物发生.
Hsp70抑制剂JG40有效地阻止了人类细胞中的登革热病毒感染,而没有诱导病毒耐药性或宿主毒性.
JG40表现出广泛的活性,抑制了其他具有医学意义的黄热病病毒,西尼罗河病毒和日本脑炎病毒的复制.

结论:

Hsp70护送网络是登革热病毒复制的关键宿主因素.
用JG40等抑制剂针对特定的Hsp70子网络是开发广泛抗病毒药物的可行策略.
这种方法有望对抗多种类型的黄病毒感染.

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