通过引入针对PD-1/PD-L1的三基衍生物的 Ester 链来改善瘤的敏感性
Yonglei Zhang1, Fucheng Yin1, Zhongwen Luo1
1Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
European journal of medicinal chemistry
|April 28, 2024
概括
一种新型化合物,22,有效地准PD-1/PD-L1通路,增强抗癌免疫反应. 这种免疫疗法剂在体内显著减少瘤,毒性最小,表明其在癌症治疗中的潜力.
科学领域:
- 免疫治疗是一种免疫疗法.
- 药用化学 医学化学
- 在瘤学瘤学.
背景情况:
- 编程细胞死亡蛋白1 (PD-1) /编程死亡配体1 (PD-L1) 途径是癌症免疫治疗的关键目标.
- 开发小分子抑制剂为PD-1/PD-L1阻塞提供了基于抗体的治疗方法的替代方案.
研究的目的:
- 设计和合成针对PD-1/PD-L1通路的新型三基化合物.
- 评估合成化合物作为潜在的癌症治疗药物的生物化学,细胞和体内疗效.
主要方法:
- 药导向设计和合成三化合物.
- 生物化学试验 (HTRF,SPR) 来确定与人类PD-L1 (hPD-L1) 的结合亲和力.
- 基于细胞的测试来评估T细胞恢复和癌细胞死亡.
- 使用4T1小鼠模型进行体内研究,以评估抗瘤活性和毒性.
主要成果:
- 化合物22对hPD-L1表现出强烈的结合 (IC50 = 1.21 nM,KD = 5.068 nM). 化合物22对hPD-L1表现出强烈的结合 (IC50 = 1.21 nM,KD = 5.068 nM).
- 化合物22通过在体外恢复T细胞免疫功能来促进癌细胞死亡.
- 在4T1模型中观察到显著的体内抗瘤活性 (TGI = 67.8%),没有明显的毒性.
- 免疫组织化学证实了化合物22能够激活抗瘤免疫反应的能力.
结论:
- 化合物22是PD-1/PD-L1通路的极强小分子抑制剂.
- 化合物22显示出有希望的临床前疗效和安全性,可作为癌症免疫治疗剂进一步开发.
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