与HSP90结合的PER2通过抑制IKK/NF-κB通路和PD-L1表达来增强对口腔状细胞癌的免疫反应
Zhiwei Zhang1, Deping Sun2, Hong Tang1
1Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
核心时钟基因Period2 (PER2) 抑制了口腔状细胞癌 (OSCC) 中的编程死亡配体1 (PD-L1). 针对PER2进行抗PD-L1免疫疗法,通过促进T细胞透,增强了抗瘤效果.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 时间生物学 时间生物学
背景情况:
- 编程死亡配体1 (PD-L1) 促进瘤免疫逃生,是免疫治疗的关键目标.
- 调节PD-L1表达的机制尚未完全理解,这限制了治疗的发展.
- 口腔状细胞癌 (OSCC) 是一个重要的健康问题,免疫逃生是一个挑战.
研究的目的:
- 研究核心时钟基因Period2 (PER2) 在OSCC中调节PD-L1表达中的作用.
- 阐明PER2影响PD-L1.1的分子机制.
- 评估将PER2向与OSCC的抗PD-L1治疗相结合的疗效.
主要方法:
- 使用定量实时PCR,西部涂抹和免疫组织化学来评估OSCC中的PER2和PD-L1表达.
- 在体外和体内实验中,PER2过度表达和敲击.
- 机制研究包括生物信息学,免疫沉,GST拉下,CHX追逐试验和西部抹杀.
- 使用了人性化的免疫复合皮下异种移植小鼠模型.
主要成果:
- 在OSCC组织和细胞中,PER2表达减少,而PD-L1表达增加,显示出负相关性.
- 通过抑制IKK/NF-κB通路,PER2抑制了PD-L1表达,并增强了T细胞介导的OSCC细胞杀死.
- PER2与HSP90结合,减少HSP90-IKK相互作用,促进IKK无处不在,并抑制NF-κB信号传递,从而抑制PD-L1.
- 在小鼠模型中,PER2向和抗PD-L1的联合治疗改善了OSCC生长抑制和CD8+T细胞透.
结论:
- 在OSCC中,PER2在调节PD-L1表达方面发挥着至关重要的作用.
- 这些发现阐明了涉及PER2,HSP90和IKK/NF-κB通路的分子机制.
- 与抗PD-L1免疫疗法相结合的PER2向显示了在OSCC治疗中临床应用的潜力.
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