关于正确的固体测量假设对于单克隆抗体建模的重要性的说明
Leonid Gibiansky1, Ekaterina Gibiansky2
1QuantPharm LLC, North Potomac, MD, USA. lgibiansky@quantpharm.com.
Journal of pharmacokinetics and pharmacodynamics
|May 3, 2024
概括
单克隆抗体 (mAb) 药理动力学模型通常假定单价结合,但双价结合在生物学上是准确的. 我们的模拟表明,当药物向复合物的消除缓慢时,1: 1模型对可溶性点失败,需要2: 1模型.
科学领域:
- 药理学 药理学是指药理学的学科.
- 生物化学 生物化学
- 数学生物学 数学生物学
背景情况:
- 目前的单克隆抗体 (mAbs) 药物动力学模型使用目标介导药物排放方程 (TMDD).
- 这些模型通常假设mAb与其目标之间的单价 (1:1) 结合.
- 然而,大多数抗体具有双价 (2:1) 结合点,与生物现实产生差异.
研究的目的:
- 为了研究在mAb药理动力学建模中石化测量假设的影响.
- 要确定何时需要双价值 (2:1) 结合模型,而不是单价值 (1:1) 模型.
- 提出和验证一个包含两种结合性固体几何学的全结合模型.
主要方法:
- 进行了模拟,以比较1:1和2:1结合模型.
- 分析集中在具有可溶性标和药物标复合物的不同消除率的场景上.
- 开发了一种全性结合模型,并使用详细的度数据测试了其可识别性.
主要成果:
- 1:1绑定模型在特定条件下不充分描述了从2:1模型中模拟的数据.
- 这些条件包括可溶性标和药物标复合物的可比或较低的消除率与药物相比.
- 拟议的全osteric 模型,包括 1:1 和 2:1 的结合,可以通过全面的数据进行识别.
结论:
- 在mAb的药理动力学模型中假设单价结合可能会导致不准确性,特别是对于缓慢复合物消除的可溶性标.
- 在某些场景中,准确的固体测量表示 (双价结合) 可能对于精确的药理动力学建模至关重要.
- 一个可识别的全结合模型为描述mAb-目标相互作用提供了一种更具机械性健全的方法.
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