乙型肝炎表面抗原的减少与乙型肝炎核心特异性CD8+T细胞质量有关
Shokichi Takahama1, Sachiyo Yoshio2, Yuji Masuta1
1Laboratory of Precision Immunology, Center for Intractable Diseases and ImmunoGenomics, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan.
Frontiers in immunology
|November 3, 2023
概括
乙型肝炎病毒 (HBV) 的T细胞反应是慢性乙型肝炎 (CHB) 的关键. 向具有较低细胞分解潜力的HBcore特异性CD8+T细胞可能会降低NUC治疗患者的持续HBsAg水平.
科学领域:
- 免疫学 免疫学 免疫学
- 肝病学 肝病学是一种肝病学.
- 病毒学 病毒学
背景情况:
- 慢性乙型肝炎 (CHB) 的特点是,尽管接受治疗,但乙型肝炎表面抗原 (HBsAg) 的持续存在.
- CD8+ T 细胞响应在控制病毒复制和降低核胺模拟 (NUC) 治疗中CHB 患者的HBsAg 水平方面的作用尚未完全理解.
研究的目的:
- 在接受NUC治疗的CHB患者中调查激活的CD8+ T细胞和HBV特定的CD8+ T细胞的特征.
- 探索T细胞反应与HBsAg水平之间的关系.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 在CHB患者的排序CD69+ CD8+ T细胞上进行.
- 在用病毒刺激周围血液单核细胞 (PBMC) 后,使用多色流细胞计分析了HBV特定的CD8+T细胞反应.
- 分析包括评估多功能细胞因子的产生 (IFN-γ/TNFα) 和脱粒标记 (CD107A/CD137).
主要成果:
- 在高HBsAg水平的患者中,scRNA-seq识别了具有细胞分解功能转录的CD8+T细胞群.
- 与其他HBV特异性T细胞相比,HBcore特异性CD8+T细胞表现出更大的多功能性.
- 减少细胞分解活性的HBcore特异性CD8+T细胞的一个子集与HBsAg水平相反相关.
结论:
- 在接受NUC治疗的CHB患者中,在HBV特定的CD8+T细胞反应中存在定性差异,这取决于病毒刺激剂.
- 诱导具有较低细胞分解潜力的HBcore特异性CD8+T细胞代表了降低CHB中的HBsAg水平的潜在新疗法策略.
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