发现基乙烯衍生物YPD-29B:一种针对编程细胞死亡-1/编程细胞死亡-1 (PD-1/PD-L1) 相互作用的新型临床前化合物
Yang Yang1, Meiqin Xu2, Ke Wang2
1Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; College of Medicine, Linyi University, Linyi 276000, China.
Bioorganic & medicinal chemistry
|August 24, 2025
概括
研究人员开发了针对PD-1/PD-L1途径的新型小分子抑制剂. 一种化合物YPD-29B表现出强烈的活性,其盐在体内表现出显著的抗黑色素瘤作用,毒性最小.
科学领域:
- 免疫学
- 医学化学
- 药理学
背景情况:
- 该PD-1/PD-L1通路是癌症免疫治疗的关键目标.
- 开发小分子抑制剂在向这种途径方面具有潜在的优势.
- 改善药物动力学特性和可药性对于有效的药物开发至关重要.
研究的目的:
- 设计和合成PD-1/PD-L1蛋白质相互作用 (PPI) 的新型小分子抑制剂.
- 评估这些抑制剂的体外和体外疗效和安全性.
- 确定有前途的候选人进行进一步的临床开发.
主要方法:
- 用素替代的双衍生物的合成和选.
- 对PD-1/PD-L1蛋白与蛋白相互作用的抑制试验 (HTRF试验).
- 基于细胞的测试 (PBMC) 来评估T细胞功能恢复.
- 使用动物模型进行体内研究以评估抗瘤活性和毒性.
- 分子对接用于结构分析.
主要成果:
- 合成了一系列新的衍生品,其中YPD-29B对PD-1/PD- L1 PPI具有高强度 (IC50<1 pM).
- 在试验室中,YPD- 29B恢复了T细胞功能 (IC50 = 0. 18nM).
- 在体内,YPD- 29B (YPD- 29B- Na) 的盐具有显著的抗黑色素瘤活性 (TGI=64. 11%),毒性较低.
- 在瘤中增加T淋巴细胞的透表明免疫系统的激活.
结论:
- 成功开发了针对PD-1/PD-L1 PPI的新型小分子.
- YPD-29B及其衍生品,特别是YPD-29B-Na,显示出有希望的抗癌潜力.
- 前药物IMMH-010 (YPD-29B的衍生物) 已经进入临床试验,表明治疗有前途.
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