O-GlcNAcylation Is Essential for Autophagy in Cardiomyocytes.

Abstract:

:Since both O-GlcNAcylation and autophagy sense intracellular nutrient level, the alteration of those two pathways plays substantial roles in the progression of heart failure. Hence, determining the relationship between O-GlcNAcylation and autophagy is imperative to understand, prevent, and treat heart failure. However, the mechanism on how O-GlcNAcylation regulates autophagy in the heart is poorly investigated. In this study, we demonstrated that O-GlcNAcylation is required for autophagy in cardiomyocytes by utilizing an O-linked β-N-acetylglucosamine transferase (OGT) cardiomyocyte-specific knockout mouse model for the first time. We also identified that OGT might regulate the initiation of autophagy in cardiomyocytes through promoting the activity of ULK1 by O-GlcNAcylation. In conclusion, our findings provide new insights into the molecular mechanisms underlying heart dysfunction and benefit the development of treatments for heart failure.

journal_name

Oxid Med Cell Longev

authors

Yu H,Wen L,Mu Y

doi

10.1155/2020/5602396

subject

Has Abstract

pub_date

2020-08-11 00:00:00

pages

5602396

eissn

1942-0900

issn

1942-0994

journal_volume

2020

pub_type

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