在不同的免疫干扰中影响单克隆抗体药理学的因素
Jonathon DeBonis1, Anthony E Davis1, Zeshi Wang1
1Department of Bioengineering, Rice University, Houston, TX, USA.
概括
生物药物测试的小鼠模型显示单克隆抗体 (mAb) 药理动力学 (PK) 中存在显著差异. BCD和RAG2小鼠为人类提供比BL6和NSG菌株更准确的PK预测.
科学领域:
- 药理学 药理学是指药理学的学科.
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
背景情况:
- 长期提供生物药物,如单克隆抗体 (mAbs),对于频繁,高剂量治疗至关重要.
- 在小鼠模型中进行临床前测试对于临床转化至关重要,但可以被异源性和异物体反应所混.
- 免疫系统淘汰赛 (KO) 模型对mAb药理动力学 (PK) 的影响需要进一步描述.
研究的目的:
- 在不同小鼠菌株中调查人类mAb (3BNC117) 的PK概况.
- 为了确定精确预测人类mAb PK的小鼠菌株,用于临床前测试.
- 在各种小鼠模型中阐明影响mAb PK的机制差异.
主要方法:
- 在BL6,BCD,RAG2和NSG小鼠中进行mAb 3BNC117的静脉,皮下和腹膜内注射.
- 非分组分析以量化菌株之间的PK差异.
- 开发一种基于生理学的PK模型,包括FcγR相互作用和抗药抗体的形成.
主要成果:
- 与BCD和RAG2小鼠相比,BL6和NSG小鼠的mAb清除值显著更高.
- 在BL6和NSG小鼠中,快速清除的原因分别是抗药抗体和增加的FcγR丰度.
- 全度尺度测量表明,BCD和RAG2小鼠提供了相当准确的人类PK预测,与BL6和NSG小鼠不同.
结论:
- 选择小鼠菌株对于准确的临床前评估mAb PK和可转化到人类至关重要.
- 免疫反应和FcγR相互作用影响的mAb清除的机制差异在小鼠模型中显著不同.
- 与BL6和NSG模型相比,BCD和RAG2小鼠模型更适合预测人类mAb PK.
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