mTOR and Beclin1: Two key autophagy-related molecules and their roles in myocardial ischemia/reperfusion injury.

Abstract:

:Autophagy is the general term of lysosomal degradation of substances in cells, which is considered the key to maintaining the normal structure and function of the heart. It also has a correlation with several heart diseases, in particular, myocardial ischemia/reperfusion (I/R) injury. At the stage of myocardial ischemia, autophagy degrades nonfunctional cytoplasmic proteins providing the critical nutrients for the critical life activities, thereby suppressing cell apoptosis and necrosis. However, autophagy is likely to affect the heart negatively in the reperfusion stage. Mammalian target of rapamycin (mTOR) and Beclin1 are two vital autophagy-related molecules in myocardial I/R injury playing significant roles in different stages. In the ischemia stage, mTOR plays its roles through AMPK/mTOR and phosphoinositide 3-kinase/Akt/mTOR pathway, whereas Beclin1 plays its roles through its upregulation in the reperfusion stage. A possible interaction between mTOR and Beclin1 has been reported recently, and further studies need to be done to find the underlying interaction between the two molecules in myocardial I/R injury.

journal_name

J Cell Physiol

authors

Shi B,Ma M,Zheng Y,Pan Y,Lin X

doi

10.1002/jcp.28125

subject

Has Abstract

pub_date

2019-08-01 00:00:00

pages

12562-12568

issue

8

eissn

0021-9541

issn

1097-4652

journal_volume

234

pub_type

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