发现阶段农业化学预测安全评估使用高含量"体外"数据来估计"体外"的毒性起点
Enrica Bianchi1, Eduardo Costa2, Joshua Harrill3
1Corteva Agriscience, Indianapolis ,Indiana 46268, United States.
Journal of agricultural and food chemistry
|July 21, 2024
概括
基于生理学的药理动力学 (PBPK) 建模有助于将体外数据转化为体外暴露,用于农业化学发现. 该httk R包准确地预测了体外数据的体外起点,改善了候选人选择.
科学领域:
- 毒理学和药理学 毒理学和药理学
- 计算化学的计算化学
- 农业化学研究 农业化学研究
背景情况:
- 细胞绘画和转录学等体外细胞测试对农业化学发现有价值.
- 将体外度转化为体外暴露仍然是一个重大挑战.
- 基于生理学上的药理动力学 (PBPK) 建模为体外到体外抽取 (IVIVE) 提供了一个框架.
研究的目的:
- 评估PBPK建模在预测体内 (大鼠肝) 转录组和基起点 (PODs) 的准确性,从体内 (大鼠肝细胞或人类HepaRG) 数据.
- 为了比较两个PBPK模型的预测性能:ADMET预测器和httk R包.
- 评估来自HepaRG细胞的细胞涂料数据对预测体内POD的有用性.
主要方法:
- 利用了来自实验室老鼠肝细胞和人类HepaRG细胞的转录和细胞绘制数据.
- 雇佣了PBPK建模,特别是ADMET预测器和httk R包,用于IVIVE.
- 将预测的体内POD与实际体内老鼠肝脏转录和顶端POD进行了比较.
主要成果:
- 与ADMET预测器相比,httk R包在预测体内POD方面表现出更高的准确性.
- 在体外转录性POD与PBPK建模相结合时,可用于估计大鼠肝脏的顶部和转录性POD.
- 来自HepaRG细胞的细胞绘画数据也为预测体内PODs做出了贡献,尽管准确度不高.
结论:
- PBPK建模,特别是使用httk R包,使农业化学研究的定量IVIVE成为可能.
- 含量高的体外数据,包括转录学和细胞绘画,可以以合理的准确性转化为体外相关性.
- 这种方法支持在早期发现计划中明智地选择农业化学模拟物,与监管重要性保持一致.
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