Cited by 57Dietary Effects on HealthAdipose Tissue and MetabolismGenetics, Aging, and Longevity in Model Organisms

Metabolic responses to dietary leucine restriction involve remodeling of adipose tissue and enhanced hepatic insulin signaling

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Wanders, Desiree, Stone, Kirsten P., Dille, Kelly, Simon, Jacob, Pierse, Alicia, Gettys, Thomas W.·2015·BioFactors

Abstract

Dietary leucine was incrementally restricted to test whether limiting this essential amino acid (EAA) would fully reproduce the beneficial responses produced by dietary methionine restriction. Restricting leucine by 85% increased energy intake and expenditure within 5 to 7 days of its introduction and reduced overall accumulation of adipose tissue. Leucine restriction (LR) also improved glucose tolerance, increased hepatic release of fibroblast growth factor 21 into the blood stream, and enhanced insulin-dependent activation of Akt in liver. However, LR had no effect on hepatic lipid levels and failed to lower lipogenic gene expression in the liver. LR did affect remodeling of white and brown adipose tissues, increasing expression of both thermogenic and lipogenic genes. These findings illustrate that dietary LR reproduces many but not all of the physiological responses of methionine restriction. The primary differences occur in the liver, where methionine and LR cause opposite effects on tissue lipid levels and expression of lipogenic genes. Altogether, these findings suggest that the sensing systems which detect and respond to dietary restriction of EAAs act through mechanisms that both leucine and methionine are able to engage, and in the case of hepatic lipid metabolism, may be unique to specific EAAs such as methionine.

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Authors
Wanders, D., Stone, K. P., Dille, K., Simon, J., Pierse, A., & Gettys, T. W.
Affiliations
  • Georgia State University (US)
  • Pennington Biomedical Research Center (US)
Corresponding author
Gettys, Thomas W.
Venue
BioFactors
Publisher
Wiley
Published
2015-11-12
Volume
41
Issue
6
Pages
391-402
ISSN
  • 0951-6433 (ISSN-L)
  • 1872-8081
OpenAlex
W2196344142
Cited by
57
References
40
Citations by year
2026: 4 · 2025: 5 · 2024: 1 · 2023: 1 · 2022: 5 · 2021: 9 · 2020: 6 · 2019: 9 · 2018: 6 · 2017: 7 · 2016: 4
FWCI
4.18
Type
journal article
Language
en
Open access
Locations
  • BioFactors (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institutes of Health (DK‐096311, F32 DK098918, P20‐GM103528, 2P30 DK072476)
Topics
  • Health Sciences › Medicine › Physiology › Dietary Effects on Health
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
methionine restriction, essential amino acids, adipose tissue remodeling, white adipose tissue, brown adipose tissue, hepatic insulin signaling, Akt, FGF21, glucose tolerance, energy expenditure, lipogenic gene expression, hepatic lipid metabolism, thermogenesis
MeSH terms
Adipose Tissue, Amino Acids, Essential, Animals, Fibroblast Growth Factors, Glucose, Humans, Insulin, Leucine, Liver, Methionine, Signal Transduction, Dietary Supplements, Mice

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