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ChanTest Develops New Cardiotoxicity and Contractility Assay with Human Stem Cell Cardiomyocytes
Date:5/14/2013

Cleveland, OH (PRWEB) May 14, 2013

Cardiovascular (CV) toxicity is a leading contributor to drug withdrawal and late-stage attrition in the drug discovery process. There is an urgent need for novel in vitro assays that enable earlier and broader testing for CV activity.

The most relevant cells for pre-clinical testing are human cells. Use of these cells has the potential to add significant efficiencies, reduce animal use and decrease the number of dangerous drugs that reach the market.

In response to this need, ChanTest has developed a new assay using ACEA Bioscience’s xCELLigence System (San Diego, CA) and human induced pluripotent stem cell (iPSC) derived cardiomyocytes from Cellular Dynamics International (CDI, Madison, WI). Based on an extensive research program, ChanTest has created several unique algorithms for twitch detection and kinetic analysis, and has concluded an investigation that suggests twitch impedance is a sensitive tool to assess contraction in a relatively high-throughput assay.

The studies concluded that the impedance twitch recordings accurately reflect key elements of contraction, thus allowing the study of drugs that affect excitation-contraction coupling and the contractile apparatus. In addition, since impedance signals can be recorded over long periods of time, deleterious long-term drug effects, such as those commonly observed for oncology drugs, can be easily evaluated with this label-free procedure. Therefore, the new ChanTest assay, applied to iPSC derived cardiomyocytes, offers an effective non-invasive screen for the cardiotoxicity and contractility.

"We listened to the requests of the pharmaceutical industry for a human cell based cardiotox and contractility assay," explained Chris Mathes, Ph.D., Chief Commercial Officer at ChanTest. "This new assay fulfills th
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