编程细胞死亡-1与C型肝炎病毒抗病毒治疗患者的外周血液免疫细胞概况有关
Miyabi Miura1, Michiko Nishino1, Kazunori Kawaguchi1
1Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Ishikawa, Japan.
PloS one
|May 23, 2024
概括
肝炎C病毒 (HCV) 治疗反应可以通过免疫细胞的变化来预测,而不仅仅是突变. 与编程细胞死亡-1 (PD-1) 相关的途径和T细胞概况为直接作用抗病毒药物 (DAA) 的治疗结果提供了洞察力.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 遗传学 是一个遗传学.
背景情况:
- 型肝炎病毒 (HCV) 非结构蛋白的突变与对直接作用抗病毒药物的非持续性病毒学反应 (SVR) 有关.
- 然而,即使没有这些特定突变,一些患者也无法达到SVR,这表明治疗失败的替代机制.
研究的目的:
- 调查慢性型肝炎C的DAA治疗患者的免疫细胞概况和基因表达变化.
- 确定预测治疗效果的生物标志物,并了解超出药物耐药性突变的非SVR机制.
主要方法:
- 光激活细胞分类 (FACS) 用于分析DAA治疗前后的外周血液免疫细胞频率 (PD-1+ T细胞).
- 进行RNA测序以比较获得SVR和没有SVR的患者之间的基因表达模式.
- 评估了免疫细胞概况,基因表达和治疗结果之间的相关性.
主要成果:
- 在SVR病例中观察到PD-1+功效调节T细胞 (eTregs),PD-1+CD8+T细胞和PD-1+辅助T细胞的显著减少,但在非SVR病例中没有.
- 在SVR组中,与非SVR组相比,在治疗前和治疗后发现了PD-1+原始Tregs的更高频率.
- RNA-seq揭示了SVR组的免疫反应基因增加和非SVR组的增强信号转导基因. T-box转录因子21与非SVR状态相关.
结论:
- 与PD-1相关的信号通路在DAA治疗后的非SVR机制中发挥作用,独立于与突变相关的耐药性.
- 免疫细胞分析,特别是PD-1+ T细胞子集,可以作为慢性C型肝炎DAA治疗疗效的预测标记.
- 基因表达分析进一步支持与治疗反应或失败相关的独特免疫和信号配置文件.
相关概念视频
01:29Immune Response Against Viral Pathogens
776
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
776
01:27Cytotoxic T Cells-mediated Immune Response
892
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
892