在小细胞外囊中携带的PD-1导致OSCC转移
L-Z Zhang1, J-G Yang1,2, H-F Xia1,2
1The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China.
Journal of dental research
|May 29, 2023
概括
小细胞外囊片PD-1 (sEV PD-1) 通过诱导衰老和上皮-介质细胞过渡促进口腔状细胞癌 (OSCC) 转移. 抑制sEV PD-1可能为OSCC患者提供新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
背景情况:
- 编程细胞死亡蛋白1 (PD-1) 是一个关键的免疫检查点分子,影响T细胞激活,对口腔状细胞癌 (OSCC) 的进展至关重要.
- 携带PD-1 (sEV PD-1) 的小细胞外囊 (sEVs) 与瘤免疫有关,但它们在OSCC中的特定作用在很大程度上仍未定义.
研究的目的:
- 研究口腔状细胞癌 (OSCC) 中sEV PD-1的生物功能和潜在机制.
- 探索针对sEV PD-1作为OSCC治疗策略的潜力.
主要方法:
- 在体外实验中评估了用sEV PD-1治疗的CAL27细胞的细胞周期,增殖,细胞亡,迁移和入侵.
- 质谱法被用来阐明生物途径.
- 对异种移植小鼠模型和OSCC患者样本进行了免疫组织化学分析.
主要成果:
- 在体外,sEV PD-1通过PD-L1结合和p38 MAPK通路激活在CAL27细胞中诱导衰老和上皮-介质细胞转变 (EMT).
- 免疫组织化学显示,在OSCC中,循环sEV PD-1水平和淋巴结转移之间存在强烈的相关性.
- sEV PD-1被证明可以以PD-L1-p38 MAPK依赖的方式触发衰老启动的EMT,促进瘤转移.
结论:
- 循环中的sEV PD-1通过诱导衰老和EMT在OSCC转移中发挥着重要作用.
- 准sEV PD-1为管理OSCC进展和转移提供了一个有希望的治疗途径.
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