• CardioExcyte 96

    インピーダンス&細胞外電位のハイブリッド測定
  • CardioExcyte 96

    心臓安全性スクリーニングに最適
  • CardioExcyte 96

    ラベルフリー:次世代の細胞解析
  • CardioExcyte 96

    直感的にデータ解析可能 & 不整脈の検出

2020 - Comprehensive Cardiac Safety Assessment using hiPS-cardiomyocytes

Icon CE  CardioExcyte96 publication in the Journal of Current Pharmaceutical Biotechnology (2020)

Authors:
Takasuna K., Kazusa K., Hayakawa T.

Journal:

Journal of Current Pharmaceutical Biotechnology  (2020) doi: 10.2174/1389201020666191024172425


Introduction: 

Current cardiac safety assessment platforms (in vitro hERG-centric, APD, and/or in vivo animal QT assays) are not fully predictive of drug-induced Torsades de Pointes (TdP) and do not address other mechanism-based arrhythmia, including ventricular tachycardia or ventricular fibrillation, or cardiac safety liabilities such as contractile and structural cardiotoxicity which are another growing safety concerns. We organized the Consortium for Safety Assessment using Human iPS cells in 2013, based on the Japan Pharmaceutical Manufacturers Association (JPMA), to verify the application of human iPS/ES cell-derived cardiomyocytes for drug safety evaluation. The CSAHi HEART team focused on comprehensive screening strategies to predict a diverse range of cardiotoxicities using recently introduced platforms such as the Multi-Electrode Array (MEA), cellular impedance, Motion Field Imaging (MFI), and optical imaging of Ca transient to identify strengths and weaknesses of each platform. Our study showed that hiPS-CMs used in these platforms could detect pharmacological responses that were more relevant to humans compared to existing hERG, APD, or Langendorff (MAPD/contraction) assays. Further, MEA and other methods such as impedance, MFI, and Ca transient assays provided paradigm changes of platforms for predicting drug-induced QT risk and/or arrhythmia or contractile dysfunctions. In contrast, since discordances such as overestimation(false positive) of arrhythmogenicity, oversight, or opposite conclusions in positive inotropic and negative chronotropic activities to some compounds were also confirmed, possibly due to their functional immaturity of hiPS-CMs, hiPS-CMs should be used in these platforms for cardiac safety assessment based upon their advantages and disadvantages.


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