Protocol for Isolation of Cardiomyocyte from Adult Mouse and Rat
2022
Huiliang Zhang | Peter Rabinovitch
The isolation of intact single adult cardiomyocytes from model animals, mouse and rat, is an essential tool for cardiac molecular and cellular research. While several methods are reported for adult mouse cardiomyocyte isolation, the viability and yield of the isolated cells have been variable. Here, we describe step-by-step protocols for high viability and yield cardiomyocyte isolation from mouse and rat, based on the use of a stable pressure Langendorff perfusion system. After the animal is euthanized or terminally anesthetized, the heart is removed from the chest and subject to Langendorff perfusion. Then, the heart is digested by perfusion with collagenase and hyaluronidase. After thorough digestion, the cardiomyocytes are dispersed and gradually recovered, the extracellular Ca2+ concentration adjusted, and cells are then ready for use. This protocol will facilitate research that requires isolated adult mouse and rat cardiomyocytes.
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