Gu Li, He Huang, Yanshuang Wu, Chang Shu, Narae Hwang, Qifei Li, Rose Zhao, Hilaire C Lam, William M Oldham, Souheil Ei-Chemaly, Pankaj B Agrawal, Jie Tian, Xiaoli Liu, Mark A Perrella
A deficiency of striated preferentially expressed gene (Speg), a member of the myosin light chain kinase family, results in abnormal myofibril structure and function of immature cardiomyocytes (CMs), corresponding with a dilated cardiomyopathy, heart failure and perinatal death. Mitochondrial development plays a role in cardiomyocyte maturation. Therefore, this study investigated whether Speg deficiency ( - / - ) in CMs would result in mitochondrial abnormalities. Speg wild-type and Speg-/- C57BL/6 littermate mice were utilized for assessment of mitochondrial structure by transmission electron and confocal microscopies...
December 26, 2023: Basic Research in Cardiology