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鉴定和描述宿主因子VCPIP1作为B型肝炎病毒的多功能阳性调节剂

Ning Kang¹, Nannan Liu¹, Mu Liu¹

¹Key Laboratory of Medical Molecular Virology (NHC and MOE and CAMS), Department of Medical Microbiology and Parasitology, Shanghai Institute of Infectious Diseases and Biosecurity, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China.

Journal of virology

|November 4, 2024

概括

含有瓦洛的蛋白相互作用蛋白1 (VCPIP1) 稳定了乙型肝炎病毒 (HBV) 蛋白HBx,并提高了HBV复制的调节. 此外,VCPIP1还可以独立于HBx增强HBV转录,作为多功能病毒调节剂.

科学领域:

病毒学病毒学
分子生物学分子生物学
乙型肝炎研究乙型肝炎研究

背景情况:

慢性乙型肝炎病毒 (HBV) 感染是全球重要的健康问题.
肝炎病毒调节蛋白HBx对于病毒生命周期和宿主相互作用至关重要.
了解宿主病毒相互作用是开发新治疗策略的关键.

研究的目的:

为了识别与HBV HBx.相互作用的宿主蛋白.
阐明已识别的蛋白质在HBV复制和发病过程中的作用.
通过宿主因子对HBV调节的新机制的特征.

主要方法:

接近性标签与蛋白质组分析相结合,以选HBx相互作用蛋白质.
生物化学测定证实了VCPIP1和HBx之间的直接结合.
用HBV复制和感染模型来评估VCPIP1的功能影响.
研究VCPIP1与病毒促销元件的相互作用的机制研究.

主要成果:

含有瓦洛的蛋白相互作用蛋白1 (VCPIP1) 被确定为一种与HBx相互作用的宿主蛋白.
VCPIP1直接与HBx结合,通过减少蛋白质体降解来稳定它.
VCPIP1增强了HBV转录,抗原表达和基因组复制.
即使没有HBx,VCPIP1也会提高HBV复制的调节.
VCPIP1与HBV增强剂I/X促进体 (EnI/Xp) 结合,增强其活性并促进YY1转录因子结合.

结论:

VCPIP1是一种HBV的多功能阳性调节剂.
VCPIP1通过HBx依赖和HBx独立的机制增强HBV复制.
VCPIP1与病毒促销元件的相互作用代表了一种新的调节途径.
这些发现扩大了VCPIP1在HBV生命周期中的已知功能,并可能提供新的治疗点.

关键词:

EnI/Xp 在线播放在此之前,HBx HBx YY1 YY1 这是一个很大的问题.cccDNADNA 在线阅读转录规则转录规则转录规则

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