Research Paper Volume 12, Issue 24 pp 26047—26062
6-Bromoindirubin-3’-oxime (6BIO) prevents myocardium from aging by inducing autophagy
- 1 Department of Geriatrics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
- 2 Division of Cardiology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
Received: February 21, 2020 Accepted: October 1, 2020 Published: December 26, 2020
https://doi.org/10.18632/aging.202253How to Cite
Abstract
6-Bromoindirubin-3’-oxime (6BIO) is a novel small molecule that exerts positive effects on several age-related alterations. However, the anti-aging effects of 6BIO on the aging heart remain unknown. Herein, we aim to investigate the effects of 6BIO on the myocardium and its underlying mechanism in vivo and vitro. Following 6BIO treatment, an increased p53 contents, a reduced p16 and β-gal levels, and attenuation of cardiac fibrosis were observed, suggesting 6BIO retarded aging of cardiomyocytes. As observed, 6BIO reduced p62 contents, elevated the levels of Beclin-1 and the ratio of LC3II/I, indicating the induction of autophagy, while the reduction of the accumulation of ROS indicated 6BIO alleviated oxidative stress. In addition, 6BIO treatment inhibited both GSK3β signaling and mTOR signaling. 6BIO might be a promising agent for preventing myocardium from aging.
Abbreviations
6BIO: 6-Bromoindirubin-3’-oxime; GSK3β: glycogen synthase kinase-3β; mTOR: mammalian target of the rapamycin; SOD: superoxide dismutase; GSH: glutathione; ROS: reactive oxygen species; β-gal: β-galactosidase.