索科特拉斯特硫酸盐通过抑制JAK活动来抑制IFN-γ诱导的PD-L1表达
Xiaobo Wang1, Wenlong Xu1, Zengyiyi Wang2
1Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, 131 Dong-An Road, Shanghai 200032, People's Republic of China.
Journal of natural products
|February 28, 2024
概括
海洋天然产物硫酸索克特拉斯特 (SKS) 通过准JAK/STAT信号来抑制PD-L1的表达. 这种化合物使瘤细胞对杀死T细胞敏感,为新型癌症免疫治疗剂提供了潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 海洋天然产品 化学 化学
- 癌症治疗方法 癌症治疗方法
背景情况:
- 编程细胞死亡蛋白1 (PD-1) /编程死亡配体1 (PD-L1) 途径是癌症免疫反应的关键调节者.
- 针对PD-1/PD-L1的单克隆抗体显示出治疗前景,但开发非抗体抑制剂仍然是一个挑战.
研究的目的:
- 开发一种查试验,用于从海洋天然产品中识别PD-L1抑制剂.
- 研究海洋化合物的潜力,作为针对PD-1/PD-L1通路的非抗体免疫治疗剂.
主要方法:
- 开发一种流细胞测量试验,以选PD-L1抑制活性.
- 对409种海洋自然产品进行选.
- 在体外T细胞瘤细胞共同培养系统评估T细胞中介杀死.
- 涉及雅努斯酶 (JAK) 和信号传感器和转录激活器 (STAT) 途径的机制研究.
主要成果:
- 硫酸索科特拉斯特 (SKS) 被确定为干扰素 (IFN-γ) 诱导的PD-L1表达的强有力的抑制剂.
- SKS治疗使瘤细胞对抗原特异性T细胞介导的细胞毒性敏感.
- 发现SKS直接抑制Janus激酶 (JAK) 活性,抑制下游信号转换器和转录激活器 (STAT) 激活和PDL1转录.
结论:
- 索科特拉斯特醇硫酸盐 (SKS) 通过抑制JAK/STAT通路,有效抑制PD-L1的表达.
- SKS通过增强T细胞介导的瘤细胞杀伤来证明免疫治疗潜力.
- SKS代表了一种有前途的非抗体剂,用于癌症免疫疗法开发.
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