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抗PD-(L) 1抗体:基于QSP的元分析的见解

Carter L Johnson¹, Deborah A Flusberg¹, Sarah A Head¹

¹Certara Predictive Technologies, Sheffield, UK.

CPT: pharmacometrics & systems pharmacology

|February 4, 2026

概括

检查点抑制剂针对编程细胞死亡蛋白1 (PD-1) 或其连接体 (PD-L1) 是关键的癌症疗法. 这项研究使用了定量系统药理模型,发现PD-1和PD-L1抑制剂在阻断PD-1:PD-L1通路方面没有区别.

科学领域:

免疫学免疫学免疫学
药理学药理学是指药理学的学科.
计算生物学计算生物学

背景情况:

针对PD-1或PD-L1的单克隆抗体 (mAbs) 显著影响了癌症治疗.
分析表明,与抗PD-L1 mAbs相比,抗PD-1 mAbs的生存结果优越,尽管直接的临床比较有限.
共同的假设是,这两类药物都抑制PD-1:PD-L1信号通路.

研究的目的:

调查PD-1:PD-L1复合物的差异性抑制是否可以解释抗PD-1和抗PD-L1mAbs.bs.之间的观察到的疗效差异.
使用定量系统药理 (QSP) 模型来分析这些检查点抑制剂的作用机制.

主要方法:

开发和应用一个QSP模型来模拟PD-1:PD-L1复合体形成的抑制.
对各种抗PD-1和抗PD-L1mAbs.临床剂量方案下的模型预测的分析.
纳入模型参数可变性和引导抽样,以评估发现的稳定性.

主要成果:

在临床剂量下,QSP模型对所有测试的mAbs预测了高水平的PD-1:PD-L1复合抑制.
该模型不支持反PD-1 mAbs实现比抗PD-L1 mAbs更大的抑制的假设.
敏感性分析,包括参数可变性和引导抽样,没有改变关于可比抑制水平的结论.

结论:

抗PD-1和抗PD-L1mAbs似乎不能仅仅基于PD-1:PD-L1复合抑制来进行机械的区分.
这两类检查点抑制剂的假设共享作用机制可能是不完整的.
需要进一步研究,以阐明导致抗PD-1和抗PD-L1疗法之间临床疗效差异的因素.

关键词:

在PD‐1中,在PD-L1中.Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop Vpop 检查点抑制抑制检查点的抑制这是一个元分析.定量系统药理学药理学

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