非临床人类心脏新方法 (NAMs) 预测瓦诺谢林诱导的前节律潜力
M Iveth Garcia1, Bhavya Bhardwaj1, Keri Dame1
1Division of Applied Regulatory Science, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD 20993, USA.
Journal of cardiovascular development and disease
|August 27, 2025
概括
新方法方法 (NAM) 准确预测瓦诺谢林
科学领域:
- 心血管毒理学
- 在体外药理学
- 干细胞生物学
背景情况:
- 瓦诺谢林在临床试验中引起心脏事件,但在早期的非临床研究中没有.
- 新方法 (NAM) 提供了先进的体外模型来评估药物安全性.
- 心脏微生理系统 (MPS) 和人类诱导的多能干细胞衍生的心肌细胞 (hiPSC-CM) 提供了与人类相关的数据.
研究的目的:
- 使用人类心脏NAM来评估瓦诺谢林对心脏的影响.
- 评估心脏NAM对临床结果的预测能力.
- 调查瓦诺谢林引起的心脏激发-收缩的变化.
主要方法:
- 使用心脏MPS与hiPSC-CMs测量电压,处理和收缩性.
- 使用多电极阵列 (MEAs) 的hiPSC-CM综合体内心律失常试验 (CiPA).
- 评估了瓦诺谢林对心脏功能和复极化的度依赖性影响.
主要成果:
- 在两种NAM平台中,瓦诺谢林延迟了复极化并诱导了前节律事件.
- 心脏MPS显示频率依赖的效应,EADs在1.5Hz节拍时被消除.
- 暴露分析表明心脏MPS中存在显著的瓦诺谢林损失.
- 在临床度下,TdP风险分析表明高至中等风险.
结论:
- 心脏NAM成功地回顾了瓦诺谢林的临床结果.
- 这些模型检测到瓦诺谢林诱导的延迟复极化和前节律失常.
- 这项研究支持评估药物安全性和减少动物试验的NAM.
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