Lifelong dietary protein restriction accelerates skeletal muscle loss and reduces muscle fibre size by impairing proteostasis and mitochondrial homeostasis.

Ersoy, Ufuk, Kanakis, Ioannis ORCID: 0000-0001-6410-1482, Alameddine, Moussira, Pedraza-Vazquez, Gibran, Ozanne, Susan E, Peffers, Mandy Jayne ORCID: 0000-0001-6979-0440, Jackson, Malcolm J ORCID: 0000-0003-3683-8297, Goljanek-Whysall, Katarzyna ORCID: 0000-0001-8166-8800 and Vasilaki, Aphrodite ORCID: 0000-0002-5652-0895 (2024) Lifelong dietary protein restriction accelerates skeletal muscle loss and reduces muscle fibre size by impairing proteostasis and mitochondrial homeostasis. Redox biology, 69. 102980-. ISSN 2213-2317, 2213-2317

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Official URL: https://doi.org/10.1016/j.redox.2023.102980

Abstract

The early life environment significantly affects the development of age-related skeletal muscle disorders. However, the long-term effects of lactational protein restriction on skeletal muscle are still poorly defined. Our study revealed that male mice nursed by dams fed a low-protein diet during lactation exhibited skeletal muscle growth restriction. This was associated with a dysregulation in the expression levels of genes related to the ribosome, mitochondria and skeletal muscle development. We reported that lifelong protein restriction accelerated loss of type-IIa muscle fibres and reduced muscle fibre size by impairing mitochondrial homeostasis and proteostasis at 18 months of age. However, feeding a normal-protein diet following lactational protein restriction prevented accelerated fibre loss and fibre size reduction in later life. These findings provide novel insight into the mechanisms by which lactational protein restriction hinders skeletal muscle growth and includes evidence that lifelong dietary protein restriction accelerated skeletal muscle loss in later life.

Item Type:	Article
Uncontrolled Keywords:	Muscle, Skeletal, Mitochondria, Animals, Mice, Proteins, Diet, Protein-Restricted, Female, Male, Muscle Fibers, Skeletal, Proteostasis
Divisions:	Faculty of Health and Life Sciences Faculty of Health and Life Sciences > Institute of Life Courses and Medical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	20 Dec 2023 14:21
Last Modified:	06 Dec 2024 17:04
DOI:	10.1016/j.redox.2023.102980
Open Access URL:	https://doi.org/10.1016/j.redox.2023.102980
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3177568