Experimentally Validated hERG Pharmacophore Models as Cardiotoxicity Prediction Tools

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• 作者：Jadel M. Kratz ; Daniela Schuster ; Michael Edtbauer ; Priyanka Saxena ; Christina E. Mair ; Julia Kirchebner ; Barbara Matuszczak ; Igor Baburin ; Steffen Hering ; Judith M. Rollinger
• 刊名：Journal of Chemical Information and Modeling
• 出版年：2014
• 出版时间：October 27, 2014
• 年：2014
• 卷：54
• 期：10
• 页码：2887-2901
• 全文大小：700K
• ISSN：1549-960X

文摘

The goal of this study was to design, experimentally validate, and apply a virtual screening workflow to identify novel hERG channel blockers. The hERG channel is an important antitarget in drug development since cardiotoxic risks remain as a major cause of attrition. A ligand-based pharmacophore model collection was developed and theoretically validated. The seven most complementary and suitable models were used for virtual screening of in-house and commercially available compound libraries. From the hit lists, 50 compounds were selected for experimental validation through bioactivity assessment using patch clamp techniques. Twenty compounds inhibited hERG channels expressed in HEK 293 cells with IC₅₀ values ranging from 0.13 to 2.77 渭M, attesting to the suitability of the models as cardiotoxicity prediction tools in a preclinical stage.