Direct or indirect regulation of muscle protein synthesis by energy status?


Journal

Clinical nutrition (Edinburgh, Scotland)
ISSN: 1532-1983
Titre abrégé: Clin Nutr
Pays: England
ID NLM: 8309603

Informations de publication

Date de publication:
04 2021
Historique:
received: 01 11 2019
revised: 10 04 2020
accepted: 14 07 2020
pubmed: 14 8 2020
medline: 2 9 2021
entrez: 14 8 2020
Statut: ppublish

Résumé

Muscle protein synthesis (MPS) is a complex and finely-regulated mechanism that plays a key role in muscle homeostasis. Amino acid bioavailability is widely considered a major driver of MPS regulation via mTOR pathway activation. However, recent results suggest that amino acid bioavailability affects cellular energy status. Whatever the tool used to modulate energy status (amino acid depletion or mild mitochondrial uncoupling), a decrease in cellular energy status decreases MPS, without necessarily involving the mTOR pathway. Here we propose that energy status directly regulates one or several energy-consuming step(s) during MPS. This new paradigm modifies our vision of protein metabolism and raises prospects for new advances in therapeutics.

Identifiants

pubmed: 32788089
pii: S0261-5614(20)30380-0
doi: 10.1016/j.clnu.2020.07.015
pii:
doi:

Substances chimiques

Muscle Proteins 0

Types de publication

Journal Article Review

Langues

eng

Sous-ensembles de citation

IM

Pagination

1893-1896

Informations de copyright

Copyright © 2020 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism. All rights reserved.

Déclaration de conflit d'intérêts

Conflict of interest C. Moinard is a shareholder in Citrage. Eric Fontaine has no conflict of interest to report.

Auteurs

Christophe Moinard (C)

Univ. Grenoble Alpes, LBFA et BEeSy, INSERM U1055, Grenoble, France. Electronic address: Christophe.moinard@univ-grenoble-alpes.fr.

Eric Fontaine (E)

Univ. Grenoble Alpes, LBFA et BEeSy, INSERM U1055, Grenoble, France.

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Classifications MeSH