Taurine attenuates isoproterenol-induced H9c2 cardiomyocytes hypertrophy by improving antioxidative ability and inhibiting calpain-1-mediated apoptosis
- 18 April 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Molecular and Cellular Biochemistry
- Vol. 469 (1-2), 119-132
- https://doi.org/10.1007/s11010-020-03733-7
Abstract
Pathological cardiac hypertrophy is ultimately accompanied by cardiomyocyte apoptosis. Apoptosis mainly related to calpain-1-mediated apoptotic pathways. Studies had proved that taurine can maintain heart health through antioxidation and antiapoptotic functions, but the effect of taurine on cardiac hypertrophy is still unclear. This study aimed to determine whether taurine could inhibit calpain-1-mediated mitochondria-dependent apoptotic pathways in isoproterenol (ISO)-induced hypertrophic cardiomyocytes. We found that taurine could inhibit the increase in cell surface area and reduce the protein expression levels of the hypertrophic markers atrial natriuretic peptide, brain natriuretic polypeptide, and β-myosin heavy chain. Taurine also reduced ROS, intracellular Ca2+ overload and mitochondrial membrane potential. Moreover, taurine inhibited cardiomyocyte apoptosis by decreasing the protein expression of calpain-1, Bax, t-Bid, cytosolic cytochrome c, Apaf-1, cleaved caspase-9 and cleaved caspase-3 and by enhancing calpastatin and Bcl-2 protein expression. Calpain-1 small interfering RNA transfection results showed similar antiapoptotic effects as the taurine prevention group. However, compared with the two treatments, taurine inhibited the expression of cleaved caspase-9 more significantly. Therefore, we believe that taurine prevents ISO-induced H9c2 cardiomyocyte hypertrophy by inhibiting oxidative stress, intracellular Ca2+ overload, the calpain-1-mediated mitochondria-dependent apoptotic pathway and cleaved caspase-9 levels. Graphic abstractKeywords
Funding Information
- National Natural Science Foundation of China (31502026)
This publication has 65 references indexed in Scilit:
- Taurine attenuates oxidative stress and alleviates cardiac failure in type I diabetic ratsCroatian Medical Journal, 2013
- Calpain, Atg5 and Bak play important roles in the crosstalk between apoptosis and autophagy induced by influx of extracellular calciumApoptosis, 2012
- Molecular targets and regulators of cardiac hypertrophyPharmacological Research, 2010
- Neuroprotective Mechanism of Taurine due to Up-regulating Calpastatin and Down-regulating Calpain and Caspase-3 during Focal Cerebral IschemiaCellular and Molecular Neurobiology, 2007
- Cardiac Hypertrophy: Mechanisms and Therapeutic OpportunitiesAntioxidants and Redox Signaling, 2007
- Role of Oxidative Stress in Cardiac Hypertrophy and RemodelingHypertension, 2007
- Taurine Attenuates Acute Hyperglycaemia-Induced Endothelial Cell Apoptosis, Leucocyte-Endothelial Cell Interactions and Cardiac DysfunctionJournal of Vascular Research, 2006
- Mitochondrial Permeability Transition Pore Opening as an Endpoint to Initiate Cell Death and as a Putative Target for CardioprotectionCellular Physiology and Biochemistry, 2006
- Analysis of Myosin Heavy Chain Functionality in the HeartOnline Journal of Public Health Informatics, 2003
- Ionomycin-activated Calpain Triggers ApoptosisJournal of Biological Chemistry, 2002