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核胺类类似物可能通过诱导肝细胞和慢性乙型肝炎患者的干扰素表达来激活T淋巴细胞

Ai-Sheng Ho¹, Jungshan Chang², Shou-Dong Lee¹

¹Division of Gastroenterology, Cheng Hsin General Hospital, Taipei, 112, Taiwan.

Scientific reports

|October 25, 2024

概括

核类型 (NA) 抑制乙型肝炎病毒 (HBV) 复制,减少肝脏损伤. 通过干扰素诱导,NAs可能会激活T淋巴细胞,与慢性乙型肝炎患者的肝功能标志物相关联.

科学领域:

肝病学肝病学是一种肝病学.
免疫学免疫学免疫学
病毒学病毒学

背景情况:

慢性乙型肝炎 (CHB) 导致肝炎,纤维化和癌症.
核胺类似物 (NA) 是一种标准治疗方法,可以抑制乙型肝炎病毒 (HBV) 复制.
免疫调节,特别是T细胞反应在NA治疗结果 (如HBsAg损失) 中的作用尚未完全理解.

研究的目的:

研究接受NA治疗的CHB患者的T细胞状态及其与肝功能的相关性.
探索NAs对T细胞激活和肝细胞的直接影响.
阐明NA诱导的免疫反应背后的机制及其临床影响.

主要方法:

测量了血清标记物 (AST,ALT,HBV DNA,HBsAg,HBeAg,HBsAb) 的数量.
通过流式细胞计量分析了T细胞标记物 (CD69,CD107a,CXCR3,PD-1).
用qPCR评估了PBMC中的免疫激活标记物 (IFNγ,IL-2,CXCL10) 和NA治疗细胞中的基因表达.

主要成果:

美国人显著降低了HBVDNA,AST和ALT水平.
AST和ALT水平与CD8+T细胞激活标志物CD107a正相关.
在CHB患者的血清转化与较高的CD4/CD8比率相关;NAs诱导肝细胞中的IFN和PD-L1表达,激活PBMCs.

结论:

在HBVDNA中NA诱导的减少与改善的肝功能标志物相关联.
通过干扰素诱导肝细胞,NAs可能会激活T淋巴细胞,影响肝脏炎症.
这些发现解释了由于T细胞介导反应导致的NA退出后严重的肝损伤.

关键词:

CD4+ T 细胞是 CD4+ T 细胞.CD8+ T 细胞 CD8+ T 细胞这是一种HBV HBV.国际货币基金组织 IFN IFN 核酸/核酸类似物 (NAs) 的使用在PD-L1中.

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