在阻塞性睡眠呼吸暂停中,小细胞外囊囊容纳PD-L1
Sylvain Recoquillon1, Sakina Ali2, Grégoire Justeau3
1SFR ICAT, Team Carme, MitoVasc Laboratory, UMR CNRS 6015 INSERM 1083, University of Angers, 49000 Angers, France.
International journal of molecular sciences
|March 28, 2024
概括
阻塞性睡眠呼吸暂停 (OSA) 不会改变小细胞外囊泡 (sEVs) 上的PD-L1表达,这表明sEVs不会损害OSA患者的免疫细胞功能.
科学领域:
- 免疫学 免疫学 免疫学
- 睡眠医学 睡眠医学
- 在瘤学瘤学.
背景情况:
- 阻塞性睡眠呼吸暂停综合征 (OSA) 与更高的癌症风险和严重程度有关.
- 免疫检查点PD-1/PD-L1路径与这种关联有关,在严重的OSA中观察到失调.
- 携带PD-L1的小细胞外囊泡 (sEV) 可以损害淋巴细胞的功能.
研究的目的:
- 为了研究OSA患者sEVs上的PD-L1表达.
- 评估OSA衍生的sEVs对淋巴细胞激活和细胞毒性的影响.
主要方法:
- 从OSA患者和对照人群中分离和描述循环sEVs,使用西方斑点,纳米追踪分析和流细胞计.
- 从对照组中分离出来的淋巴细胞与来自OSA患者和对照组的sEV进行化.
- 在sEV化后评估淋巴细胞激活和细胞毒性.
主要成果:
- 在OSA患者和对照人群之间,在sEV的数量或组成上没有发现显著差异.
- 与对照组相比,OSA患者的sEVs没有显著影响淋巴细胞激活或细胞毒性.
- 在OSA患者中,sEVs上的PD-L1表达没有被发现被改变.
结论:
- 在循环sEV中,OSA似乎没有改变PD-L1的表达.
- 在OSA患者中,sEVs不会通过PD-L1.1促进细胞毒性淋巴细胞的失调.
- 与OSA相关的免疫功能障碍中涉及sEV PD-L1的拟议机制需要进一步调查.
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