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乙型肝炎病毒感染在人类初级肝细胞中传播的建模

Zhenzhen Shi¹, Masataka Tsuge^1,2,3, Nicholson Collier^4,5

¹The Program for Experimental & Theoretical Modeling, Division of Hepatology, Department of Medicine, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA.

Journal of virology

|August 4, 2025

概括

这项研究详细介绍了B型肝炎病毒 (HBV) 在人肝细胞中的DNA动力学,揭示了不同的病毒放大阶段. 一个基于药剂的模型估计了HBV日食阶段,并显示HBV进入抑制剂有效地阻止了病毒传播.

科学领域:

肝病学和病毒学.
传染病与微生物学

背景情况:

慢性乙型肝炎病毒 (HBV) 感染是全球主要的健康问题,导致肝硬化和肝癌等严重的肝病.
初级人类肝细胞 (PHHs) 对于在体外研究HBV感染至关重要,但HBV感染和PHHs传播的详细动力学仍然不完全理解.

研究的目的:

在注射后32天的PHHS中描述HBVDNA动力学.
修改一种基于活体代理的模型 (ABM),以获得对HBV生命周期,生产周期和体外传播的定量见解.
评估HBV进入抑制剂Myr-preS1在阻断HBV感染和传播方面的有效性.

主要方法:

初级人类肝细胞 (PHHs) 用HBV接种并培养32天.
PHH培养物要么进行模拟处理,要么使用HBV进入抑制剂Myr-preS1.1.进行治疗.
一个基于代理的模型 (ABM) 被调整并用于分析HBV动态模式并预测病毒生命周期参数.

主要成果:

在未经治疗的PHH中观察到三种不同的HBVDNA动态模式:初始下降,快速放大和更慢的放大/积累.
Myr-preS1治疗有效地阻断了病毒DNA和感染细胞在后期的增加,表明病毒传播的抑制.
该ABM准确地复制了观察到的HBV动力学,预测HBV日食阶段为18-38小时,并估计Myr-preS1的疗效为91%.

结论:

这项研究阐明了HBV感染的不同阶段和PHHs内的传播.
适应的ABM为HBV阴影阶段,生产率和抑制剂在体外的有效性提供了有价值的定量估计.
在实验室中从PHHs获得的HBV感染动态参数与在体内HBV感染仿真小鼠模型中观察到的非常相似.

关键词:

使用Myr-preS1进行治疗.基于代理的建模.乙型肝炎病毒的感染.主要的人类肝细胞病毒性肝炎病毒性肝炎病毒性肝炎

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