Factors controlling cardiac myosin-isoform shift during hypertrophy and heart failure

MP Gupta - Journal of molecular and cellular cardiology, 2007 - Elsevier
Journal of molecular and cellular cardiology, 2007Elsevier
Myosin is a molecular motor, which interacts with actin to convert the energy from ATP
hydrolysis into mechanical work. In cardiac myocytes, two myosin isoforms are expressed
and their relative distribution changes in different developmental and pathophysiologic
conditions of the heart. It has been realized for a long time that a shift in myosin isoforms
plays a major role in regulating myocardial contractile activity. With the recent evidence
implicating that alteration in myosin isoform ratio may be eventually beneficial for the …
Myosin is a molecular motor, which interacts with actin to convert the energy from ATP hydrolysis into mechanical work. In cardiac myocytes, two myosin isoforms are expressed and their relative distribution changes in different developmental and pathophysiologic conditions of the heart. It has been realized for a long time that a shift in myosin isoforms plays a major role in regulating myocardial contractile activity. With the recent evidence implicating that alteration in myosin isoform ratio may be eventually beneficial for the treatment of a stressed heart, a new interest has developed to find out ways of controlling the myosin isoform shift. This article reviews the published data describing the role of myosin isoforms in the heart and highlighting the importance of various factors shown to influence myosin isofrom shift during physiology and disease states of the heart.
Elsevier