| Literature DB >> 25336656 |
Yanping Zhu1, Xiaoyang Shan2, Scott A Yuzwa2, David J Vocadlo3.
Abstract
Regional glucose hypometabolism is a defining feature of Alzheimer disease (AD). One emerging link between glucose hypometabolism and progression of AD is the nutrient-responsive post-translational O-GlcNAcylation of nucleocytoplasmic proteins. O-GlcNAc is abundant in neurons and occurs on both tau and amyloid precursor protein. Increased brain O-GlcNAcylation protects against tau and amyloid-β peptide toxicity. Decreased O-GlcNAcylation occurs in AD, suggesting that glucose hypometabolism may impair the protective roles of O-GlcNAc within neurons and enable neurodegeneration. Here, we review how O-GlcNAc may link cerebral glucose hypometabolism to progression of AD and summarize data regarding the protective role of O-GlcNAc in AD models.Entities:
Keywords: Alzheimer Disease; Amyloid-β (Aβ); Brain Metabolism; Glucose Metabolism; Glycobiology; Glycoprotein; Glycosylation; O-GlcNAcylation; O-Linked N-Acetylglucosamine (O-GlcNAc); Tau Protein (Tau)
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Year: 2014 PMID: 25336656 PMCID: PMC4263855 DOI: 10.1074/jbc.R114.601351
Source DB: PubMed Journal: J Biol Chem ISSN: 0021-9258 Impact factor: 5.157