在HIV-乙型肝炎病毒共感染模型系统中,B型肝炎表面抗原被HIV Tat上调
Wei Zhao1, Kasha Singh1,2,3, Vitini Sozzi4
1Department of Infectious Diseases, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Microbiology spectrum
|July 23, 2025
概括
人类免疫缺陷病毒 (HIV) 感染加速乙型肝炎病毒 (HBV) 复制和共同感染个体的肝病进展. 艾滋病毒Tat蛋白调节HBV表面抗原的产生,提供潜在的治疗点.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 乙型肝炎病毒 (HBV) 和人类免疫缺陷病毒 (HIV) 的联合感染加速肝脏疾病,增加肝细胞癌的风险.
- 艾滋病毒感染肝细胞,可能通过病毒蛋白和细胞通路影响HBV复制.
研究的目的:
- 研究艾滋病毒影响肝细胞HBV复制的机制.
- 确定特定的HIV蛋白和参与调节HBV复制的细胞通路.
主要方法:
- 用HBV和VSV.G伪型HIV感染NTCP表达的HepG2细胞.
- 在产生HBV的AD38细胞中,HIV Tat蛋白过度表达.
- 评估HBV表面 (HBs) mRNA和HBs抗原 (HBsAg) 的水平.
- 通过BAY-1251152.2.抑制CDK9通路进行抑制.
主要成果:
- 艾滋病毒感染升高了HBV表面mRNA的两倍,并增加了细胞内HBsAg的产生和保留.
- 艾滋病毒Tat蛋白显著刺激HBs mRNA的表达.
- CDK9抑制挽救了Tat介导的HBs mRNA上调.
结论:
- 艾滋病毒直接影响HBV复制,Tat蛋白在增强HBsAg产生方面发挥着关键作用.
- CDK9通路与HIV介导的HBV复制的调节有关.
- 研究结果表明,针对Tat或CDK9的潜在治疗策略可以用于管理HIV-HBV联合感染.
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