Non-invasive electromechanical cell-based biosensors for improved investigation of 3D cardiac models
| Authors | |
|---|---|
| Year of publication | 2019 |
| Type | Article in Periodical |
| Magazine / Source | Biosensors & bioelectronics : the international journal for the professional involved with research, technology and applications of biosensors and related devices |
| MU Faculty or unit | |
| Citation | |
| Web | https://www.sciencedirect.com/science/article/pii/S0956566318308315?via%3Dihub |
| Doi | http://dx.doi.org/10.1016/j.bios.2018.10.021 |
| Keywords | Excitation-contraction coupling; Human pluripotent stem cells; Cardiomyocytes; Atomic force microscopy; Microelectrode array; Drug testing |
| Description | Cardiomyocytes (CM) placed on microelectrode array (MEA) were simultaneously probed with cantilever from atomic force microscope (AFM) system. This electric,nanomechanical combination in real time recorded beating force of the CMs cluster and the triggering electric events. Such "organ-on-a-chip" represents a tool for drug development and disease modeling. The human pluripotent stem cells included the WT embryonic line CCTL14 and the induced dystrophin deficient line reprogrammed from fibroblasts of a patient affected by Duchenne Muscular Dystrophy (DMD, complete loss of dystrophin expression). Both were differentiated to CMs and employed with the AFM/MEA platform for diseased CMs’ drug response testing and DMD characterization. The dependence of cardiac parameters on extracellular Ca2+ was studied. The differential evaluation explained the observed effects despite variability of biological samples. The beta-adrenergic stimulation (isoproterenol) and antagonist trials (verapamil) addressed ionotropic and chronotropic cell line-dependent features. For the first time, a distinctive beating-force relation for DMD CMs was measured on the 3D cardiac in vitro model. |
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