CCR2+TREM-1+单细胞促进自然杀手T细胞功能障碍,有助于HBV疾病的进展
Xiaojuan Wu1, Wenling Zhao1, Qiang Miao1
1Department of Laboratory Medicine, Research Center of Clinical Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China.
Immunologic research
|May 30, 2024
概括
乙型肝炎病毒 (HBV) 感染会损害天生的免疫细胞,称为不变的自然杀手T (iNKT) 细胞. TREM-1+单细胞有助于这种损伤,表明TREM-1抑制是HBV的潜在治疗策略.
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:
- 自然杀手T (NKT) 细胞是对抗乙型肝炎病毒 (HBV) 感染的关键先天性免疫细胞.
- 已知HBV感染会诱导单细胞中的TREM-1表达,并促进炎症性细胞因子分泌.
- 在HBV感染期间,TREM-1+单细胞在调节不变NKT (iNKT) 细胞功能的确切作用尚不清楚.
研究的目的:
- 研究TREM-1+单细胞在B型肝炎病毒感染期间调节iNKT细胞功能中的作用.
- 探索TREM-1信号传递对iNKT细胞活性和细胞因子分泌在HBV的背景下的影响.
- 评估针对TREM-1作为治疗HBV感染的治疗方法的潜力.
主要方法:
- 使用流细胞计分析了外周血液中iNKT细胞和TREM-1+单细胞的百分比和表型.
- 研究参与者包括健康对照组 (HC) 和慢性HBV感染 (CHB),肝硬化 (LC) 和急性至慢性肝衰竭 (ACLF) 的患者.
- 参与iNKT细胞和TREM-1过度表达THP-1细胞的共同培养实验进行,以评估TREM-1的调节功能.
主要成果:
- 随着疾病的进展,观察到iNKT细胞和CD4-iNKT细胞的减少.
- CCR2+TREM-1+单细胞的增加与与HBV相关的肝病的进展相关.
- TREM-1通路的激活导致炎症性细胞因子分泌,iNKT细胞热和IL-17分泌,加剧了疾病的进展.
结论:
- TREM-1+单细胞通过损害iNKT细胞功能和促进炎症,在HBV感染中起着有害的作用.
- 阻断单细胞中TREM-1激活可能提供一种治疗策略,通过保留iNKT细胞功能来增强HBV消除.
- 需要进一步的研究来验证这些发现,并为HBV患者开发新的治疗策略.
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