Acute Regulation of Cardiac Metabolism by the Hexosamine Biosynthesis Pathway and Protein O-GlcNAcylation

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Acute Regulation of Cardiac Metabolism by the Hexosamine Biosynthesis Pathway and Protein O-GlcNAcylation

OBJECTIVE The hexosamine biosynthesis pathway (HBP) flux and protein O-linked N-acetyl-glucosamine (O-GlcNAc) levels have been implicated in mediating the adverse effects of diabetes in the cardiovascular system. Activation of these pathways with glucosamine has been shown to mimic some of the diabetes-induced functional and structural changes in the heart; however, the effect on cardiac metabo...

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The hexosamine biosynthetic pathway and O-GlcNAcylation drive the expression of β-catenin and cell proliferation.

The short half-life protooncogene β-catenin acquires a remarkable stability in a large subset of cancers, mainly from mutations affecting its proteasomal degradation. In this sense, colorectal cancers (CRC) form a group of pathologies in which early steps of development are characterized by an aberrant expression of β-catenin and an uncontrolled proliferation of epithelial cells. Diet has long ...

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Hexosamine biosynthesis pathway ( HBP )

27 There is increasing evidence that endoplasmic reticulum (ER) stress contributes to the 28 development atherosclerosis in diabetes mellitus. The purpose of this study was to determine the effects 29 of increased hexosamine biosynthesis pathway (HBP) flux on ER stress levels and the complications of 30 ER stress associated with diabetes and atherosclerosis in hepatic cells. Glutamine:fructose-...

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Nox4 reprograms cardiac substrate metabolism via protein O-GlcNAcylation to enhance stress adaptation

Cardiac hypertrophic remodeling during chronic hemodynamic stress is associated with a switch in preferred energy substrate from fatty acids to glucose, usually considered to be energetically favorable. The mechanistic interrelationship between altered energy metabolism, remodeling, and function remains unclear. The ROS-generating NADPH oxidase-4 (Nox4) is upregulated in the overloaded heart, w...

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30 Years Old: O-GlcNAc Reaches the Age of Reason – Regulation of Cell Signaling and Metabolism by O-GlcNAcylation

Hundreds of post-translational modifications (PTM) have been characterized on proteins, including a large variety of glycosylations, among which figures O-GlcNAcylation. Since its discovery, O-GlcNAcylation has emerged as a major PTM that is widespread, being found in viruses, bacteria, and protists through plant and animal cells. In contrast to N and O-glycosylations, O-GlcNAcylation involves ...

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ژورنال

عنوان ژورنال: PLoS ONE

سال: 2011

ISSN: 1932-6203

DOI: 10.1371/journal.pone.0018417