相关实验视频
Updated: Jul 19, 2026

08:17
Flow Cytometry-based Assay for the Monitoring of NK Cell Functions
Published on: October 30, 2016
通过CD155-TIGIT轴,多态核核髓蛋白衍生的抑制细胞通过神经髓炎光学谱系障碍抑制自然杀手细胞功能
Chao Zhang1, Zonghao Pan1, Xuli Ma1
1Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
Clinical immunology (Orlando, Fla.)
|February 19, 2026
概括
多态核核髓衍生的抑制细胞 (PMN-MDSCs) 可能通过CD155/TIGIT通路损害神经髓炎光学谱系障碍 (NMOSD) 中的自然杀手 (NK) 细胞功能,影响疾病活性.
科学领域:
- 免疫学 免疫学 免疫学
- 神经免疫学 神经免疫学
- 细胞生物学 细胞生物学
背景情况:
- 自然杀手 (NK) 细胞和髓质衍生抑制细胞 (MDSCs) 参与神经omyelitis optica光谱障碍 (NMOSD).
- 这些细胞类型在NMOSD病原体中的特定相互作用和功能后果尚未完全理解.
- 多态核MDSCs (PMN-MDSCs) 和NK细胞是自身免疫性中枢神经系统疾病中的关键免疫参与者.
研究的目的:
- 研究NMOSD患者NK细胞和PMN-MDSC之间的相互作用.
- 阐明NMOSD中PMN-MDSCs潜在的NK细胞抑制背后的分子机制.
- 探索免疫细胞频率,受体表达和NMOSD中的临床残疾之间的相关性.
主要方法:
- 流细胞计用于量化NMOSD患者NK细胞和PMN-MDSC的频率.
- 分析了PMN-MDSCs上的CD155和NK细胞上的TIGIT,NKp30和NKp46的表达水平.
- 进行了体外共同培养实验,以评估由PMN-MDSCs抑制NK细胞功能,有或没有阻断剂.
主要成果:
- 在NMOSD患者中,PMN-MDSC频率增加,NK细胞频率降低.
- 在缓解期间,在患者中观察到PMN-MDSC和NK细胞TIGIT上CD155表达的升高,以及NKp30和NKp46的下调.
- 在体外,PMN-MDSCs通过可溶性因子和CD155/TIGIT轴抑制NK细胞功能,以减少IFN-γ分泌为证据,阻断后可逆.
结论:
- 通过CD155/TIGIT通路,PMN-MDSCs可能会通过NMOSD抑制NK细胞功能.
- 这种相互作用可能有助于在NMOSD中观察到的免疫病理学和临床残疾.
- 针对CD155/TIGIT轴可能是NMOSD的潜在治疗策略.
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