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单细胞转录组分析显示,慢性乙型肝炎患者的B细胞子集功能失调

Jing Li^1,2, Siyuan Chen¹, Cheng Zhen¹

¹Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, 100 Western 4th Ring Middle Road, Beijing, 100039, China.

Hepatology international

|June 9, 2025

概括

这项研究揭示了乙型肝炎病毒 (HBV) 感染阶段的独特B细胞子集,识别了肝脏中的非典型B细胞 (ABC) 和FCRL1+B细胞. 这些子集为与HBV相关的幽默免疫机制提供了洞察力.

科学领域:

免疫学免疫学免疫学
病毒学病毒学
细胞生物学细胞生物学

背景情况:

乙肝病毒 (HBV) 感染涉及复杂的免疫反应.
在病毒感染期间,B细胞子集在幽默免疫系统中发挥着关键作用.
了解不同HBV阶段的B细胞动态对于治疗策略至关重要.

研究的目的:

在HBV感染的各个阶段研究B细胞子集的免疫特征.
探索这些B细胞子集的临床意义.
阐明HBV中幽默免疫的潜在机制.

主要方法:

从25个人肝脏和血液样本中23967个B细胞的单细胞RNA测序,跨越HBV阶段 (IT,IA,AR,CR) 和健康对照.
包括一个单独的队列用于实验验证,使用流细胞计.
对B细胞子集分布和基因表达模式的分析.

主要成果:

慢性乙型肝炎 (CHB) 肝脏组织与外周血液相比显示富含非典型B细胞 (ABC) 和FCRL1+ B细胞子集.
在免疫耐受性 (IT) 患者中,ABC子集与耐受性相关的基因过度表达;在免疫激活 (IA) 患者中,FCRL1+子集与激活相关的基因过度表达.
在CHB患者中观察到异常的血细胞 (PC) 差异化,关键成熟分子的表达变化 (SEC61A1,TNFRSF17).

结论:

在HBV感染阶段对B细胞子集组成和功能的综合分析.
鉴定特定的B细胞子集 (ABC,FCRL1+) 以及它们在肝脏和血液中的作用.
确定了HBV感染中幽默免疫力改变的潜在机制.

关键词:

B细胞是B细胞的组成部分.慢性乙型肝炎慢性乙型肝炎功能疗法是一种功能疗法.这就是HBV HBV.肝脏组织组织的肝脏组织.单细胞RNA测序的一个细胞.

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