Regulation of cardiac O-GlcNAcylation: More than just nutrient availability.
Biochim Biophys Acta Mol Basis Dis
; 1866(5): 165712, 2020 05 01.
Article
en En
| MEDLINE
| ID: mdl-32014551
ABSTRACT
The post-translational modification of serine and threonine residues of nuclear, cytosolic, and mitochondrial proteins by O-linked ß-N-acetyl glucosamine (O-GlcNAc) has long been seen as an important regulatory mechanism in the cardiovascular system. O-GlcNAcylation of cardiac proteins has been shown to contribute to the regulation of transcription, metabolism, mitochondrial function, protein quality control and turnover, autophagy, and calcium handling. In the heart, acute increases in O-GlcNAc have been associated with cardioprotection, such as those observed during ischemia/reperfusion. Conversely, chronic increases in O-GlcNAc, often associated with diabetes and nutrient excess, have been shown to contribute to cardiac dysfunction. Traditionally, many studies have linked changes in O-GlcNAc with nutrient availability and as such O-GlcNAcylation is often seen as a nutrient driven process. However, emerging evidence suggests that O-GlcNAcylation may also be regulated by non-nutrient dependent mechanisms, such as transcriptional and post-translational regulation. Therefore, the goals of this review are to provide an overview of the impact of O-GlcNAcylation in the cardiovascular system, how this is regulated and to discuss the emergence of regulatory mechanisms other than nutrient availability.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Acetilglucosamina
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Enfermedades Cardiovasculares
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Procesamiento Proteico-Postraduccional
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Corazón
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Miocardio
Límite:
Animals
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Humans
Idioma:
En
Revista:
Biochim Biophys Acta Mol Basis Dis
Año:
2020
Tipo del documento:
Article
País de afiliación:
Estados Unidos