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基于电阻断层扫描和细胞外电压激活 (EIT-EVA) 的非侵入性hERG通道选

Muhammad Fathul Ihsan¹, Daisuke Kawashima^2,3, Songshi Li²

¹Department of Mechanical Engineering, Graduate School of Science and Engineering, Division of Fundamental Engineering, Chiba University, Chiba 263-8522, Japan.

|June 3, 2024

概括

一种新的电阻断层扫描和细胞外电压激活 (EIT-EVA) 方法使hERG通道的非侵入性查成为可能. 这种技术准确地测量了药物对离子通道活性的影响,与传统方法相对应.

科学领域:

生物医学工程生物医学工程
电子生理学电子生理学
药理学药理学是指药理学的学科.

背景情况:

hERG通道功能障碍与心律失常有关.
准确和非侵入性查方法对于药物发现至关重要.
传统的补丁方法耗时且具有侵入性.

研究的目的:

开发和验证使用EIT-EVA的hERG道的非侵入性选方法.
评估EIT-EVA在量化药物诱导的hERG通道抑制中的有效性.
为了将EIT-EVA结果与已确定的补丁技术进行比较.

主要方法:

利用了电阻断层扫描和细胞外电压激活 (EIT-EVA),使用了一种新的PCB传感器.
在表达hERG通道的HEK 293细胞中测量了细胞外阻力 (R_ex) 的变化.
重建了R_ex变化与细胞外K+离子度变化 (Δc),以评估hERG活性和药物抑制.

主要成果:

EIT-EVA成功检测到了hERG通道活性和E-4031.1.的抑制.
该系统表现出对药物度的剂量依赖反应,产生2.7nM的IC50.
EIT-EVA结果显示与补丁测量有很高的相关性 (R^2 = 0.85).

结论:

EIT-EVA为hERG道选提供了一个强大而非侵入性的平台.
这种方法为早期药物发现和安全性评估提供了一个有希望的替代方案.
该技术增强了药物发现管道的非侵入性方面.

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