通过Orai1和STIM1介导的信号控制PD-L1的表达,并调节口腔癌的抗瘤免疫力
Eriko Yamashita1, Soichiro Ishikawa2, Yuto Mizuno3
1Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama-shi, Kanagawa 236-0004, Japan; Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama-shi, Kanagawa 236-0004, Japan.
The journal of physiological sciences : JPS
|February 10, 2026
概括
这项研究表明,信号调节口腔癌中PD-L1的表达. 抑制储存运行的入 (SOCE) 降低PD-L1,可能改善抗瘤免疫力.
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:
- 口腔状细胞癌 (OSCC) 表现出免疫逃避.
- 编程死亡配体1 (PD-L1) 是一个关键的免疫检查点分子.
- 信号通路与细胞调节有关.
研究的目的:
- 调查信号在OSCC中调节PD-L1表达中的作用.
- 探索针对OSCC免疫治疗的信号的治疗潜力.
主要方法:
- 干扰素- (IFN-γ) 刺激OSCC细胞.
- 使用Synta66.6,药理上抑制储存式进入 (SOCE).
- 对Orai1和STIM1.1进行基因淘汰.
- 抑制卡尔莫杜林依赖的激酶通路 (CaMK2,CaMKK2).
- 评估PD-L1表达和CD8+T细胞介导的细胞毒性.
主要成果:
- IFN-γ刺激改变了细胞蛋白质组,并激活了通路.
- SOCE抑制剂量依赖抑制IFN-γ诱导的PD-L1表达.
- 在不影响基底水平的情况下,Orai1或STIM1敲击减弱了PD-L1诱导.
- 抑制CaMK2/CaMKK2可以降低PD-L1表达.
- 针对SOCE组件增强了CD8+T细胞介导的OSCC细胞的杀死.
结论:
- 储存运行的入 (SOCE) 和下游激酶调节OSCC中的IFN-γ诱导的PD-L1表达.
- 针对SOCE提供了一种潜在的治疗策略,以克服口腔癌中的免疫逃避.
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