Thermogenetics for cardiac pacing
Balatskiy, A. V.; Nesterenko, A. M.; Lanin, A. A.; Ovechkina, V. S.; Sabinin, S. S.; Fetisova, E. S.; Moshchenko, A. A.; Jappy, D.; Sokolov, R. A.; Biglova, D. Z.; Solius, G. M.; Solius, E. M.; Korolev, S. V.; Podgorny, O. V.; Kelmanson, I. V.; Rozov, A. V.; Fedotov, A. B.; Bruegmann, T.; Zheltikov, A. M.; Mozhaev, A. A.; Belousov, V. V.
Show abstract
Cardiac arrhythmias are common disorders that can be fatal. Modern methods of treating bradyarrhythmias include the implantation of pacemakers and cardioverter-defibrillators. However, implantable devices can cause various complications related to the electrodes installed inside the heart, including infection. Less invasive heart rhythm modulation could be beneficial for some cohorts of patients. Here, we demonstrate an alternative approach to heart pacing based on thermogenetics. We used adeno-associated viruses to deliver genetic human transient receptor potential subfamily V member 1 (TRPV1), a heat-sensitive cation channel, into isolated cardiomyocytes and the mouse heart. This allowed us to induce action potentials and control contractility using short heat pulses delivered by infrared laser illumination. Using this approach, we demonstrated the thermogenetic pacing of isolated cardiomyocytes in vitro and in the mouse heart in vivo. Our results demonstrate the potential of thermogenetics for developing therapeutic strategies for heart rhythm modulation.
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