硫福拉激活CD8+ T细胞通过IL-12RB2/MMP3/FasL诱导的MDSCs亡的抗瘤反应
Jinyan Liu1, Huanan Chen1,2, Caijuan Guo1
1Biotherapy Center and Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Journal for immunotherapy of cancer
|January 31, 2024
概括
硫福拉 (SFN) 通过激活IL-12RB2来消除骨髓衍生抑制细胞 (MDSC),从而导致CD8+ T细胞激活和抑制瘤生长. 该战略针对MDSC,以提高癌症治疗效率.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 骨髓系衍生抑制细胞 (MDSCs) 是瘤进展和治疗耐药性的关键驱动因素.
- 由于安全问题,消除MDSCs的现有药物缺乏临床批准.
- 硫 (SFN) 正在研究其在瘤微环境 (TME) 中消除MDSC的潜力.
研究的目的:
- 为了研究硫福拉 (SFN) 在消除髓质衍生抑制细胞 (MDSCs) 的疗效.
- 阐明SFN影响MDSC和瘤免疫力的潜在机制.
- 评估SFN在调节MDSC和T细胞中的临床相关性.
主要方法:
- 在小鼠模型中监测了SFN对瘤生长和免疫细胞亡的影响.
- 采用了体外和体外技术,包括流细胞计,qPCR,ELISA和西部黑斑.
- RNA测序确定了SFN介导的MDSC调节机制,在异种移植模型和I期临床试验中得到了验证.
主要成果:
- SFN治疗减少了外周血液和瘤部位的MDSC积累,增强了CD8+ T细胞的抗瘤活性,抑制了瘤生长.
- 从机制上讲,SFN激活IL-12RB2,启动一个MMP3/FasL信号通路,通过caspase 3裂变诱导MDSC亡.
- 从临床上看,SFN的使用降低了外围MDSC,并增加了CD8+ T细胞的百分比和激活.
结论:
- 通过通过IL-12RB2/MMP3/FasL通路诱导亡,SFN有效地消除了MDSC.
- 这种机制释放CD8+ T细胞,从而抑制瘤生长.
- SFN提出了一个有前途的治疗策略,用于针对MDSC,以改善癌症治疗结果.
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