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IPS cell-derived myocardial model cells having normal inward potassium current characteristics

机译:具有正常内向钾电流特征的IPS细胞衍生的心肌模型细胞

摘要

An object of the present invention is to provide an evaluated cell and its establishment method and a screening method of a test substance using the same, to be used for an evaluation system for detecting QT interval prolonging action and proarrhythmic property in drug research and development . It is derived from an induced pluripotent stem cell (iPS cell) and expresses at least one intracellular gene of cardiac troponin T (TnT), connexin 43 (Cx 43), or -actinin (-actinin) Characterized in that the Kir2.1 channel is expressed by the introduced KCNJ2 gene, the maximum diastolic potential when electrical stimulation is given is-85 to-65 mV, and does not have spontaneous periodic contractile activity Cells are prepared.
机译:本发明的目的是提供一种被评估细胞及其建立方法和使用该细胞的测试物质的筛选方法,用于在药物研发中检测QT间期延长作用和心律失常特性的评估系统。它衍生自诱导多能干细胞(iPS细胞),并表达至少一个心肌肌钙蛋白T(TnT),连接蛋白43(Cx 43)或-actinin(-actinin)的细胞内基因,其特征在于Kir2.1通道通过导入的KCNJ2基因表达α-α,当给予电刺激时最大舒张电位为-85至-65mV,并且不具有自发的周期性收缩活性。制备细胞。

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