Cited by 206Fibroblast Growth Factor ResearchDietary Effects on HealthRegulation of Appetite and Obesity

Metabolic Responses to Dietary Protein Restriction Require an Increase in FGF21 that Is Delayed by the Absence of GCN2

Open access
Laeger, Thomas, Albarado, Diana C., Burke, Susan J., Trosclair, Lexus, Hedgepeth, John W., Berthoud, Hans-Rudolf, Gettys, Thomas W., Collier, J. Jason +2 more·2016·Cell Reports

Abstract

FGF21 contributes to the metabolic response to dietary protein restriction, and prior data implicate GCN2 as the amino acid sensor linking protein restriction to FGF21 induction. Here, we demonstrate the persistent and essential role of FGF21 in the metabolic response to protein restriction. We show that Fgf21 KO mice are fully resistant to low protein (LP)-induced changes in food intake, energy expenditure (EE), body weight gain, and metabolic gene expression for 6 months. Gcn2 KO mice recapitulate this phenotype, but LP-induced effects on food intake, EE, and body weight subsequently begin to appear after 14 days on diet. We show that this delayed emergence of LP-induced metabolic effects in Gcn2 KO mice coincides with a delayed but progressive increase of hepatic Fgf21 expression and blood FGF21 concentrations over time. These data indicate that FGF21 is essential for the metabolic response to protein restriction but that GCN2 is only transiently required for LP-induced FGF21.

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Crossref · 10.1016/j.celrep.2016.06.044

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  • FGF21 is induced in response to protein imbalance, specifically dietary-protein dilution.

    “Beyond the response to high carbohydrate, FGF21 is induced in response to protein imbalance, specifically dietary-protein dilution26,27,124.”

    From Metabolic messengers: FGF21 (2021) · cites this paper as [124]

  • The Fgf21 promoter has multiple ATF4 binding sites, and GCN2-mediated activation of ATF4 leads to induction of hepatic and circulating FGF21.

    “The Fgf21 promoter has multiple ATF4 binding sites, and GCN2-mediated activation of ATF4 leads to the induction of hepatic and circulating levels of FGF21 (24, 68, 72).”
  • FGF21 is absolutely necessary in mice to mediate the effects of low-protein diets.

    “FGF21 is absolutely necessary in mice to mediate the effects of low-protein diets (72, 73, 85).”
  • The increase in FGF21 is absolutely required for metabolic responses to protein restriction.

    “this increase in FGF21 is absolutely required for metabolic responses to protein restriction”
  • Although wild-type mice exhibit changes in growth, body composition, food intake, energy expenditure, and glucose metabolism in response to dietary protein restriction, these effects are absent in mice that lack FGF21.

    “Although wild-type mice exhibit changes in growth, body composition, food intake, energy expenditure, and glucose metabolism in response to dietary protein restriction, these effects are absent in mice that lack FGF21”

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Authors
Laeger, T., Albarado, D. C., Burke, S. J., Trosclair, L., Hedgepeth, J. W., Berthoud, H.-R., Gettys, T. W., Collier, J. J., Münzberg, H., & Morrison, C. D.
Affiliations
Pennington Biomedical Research Center (US)
Corresponding author
Morrison, Christopher D.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2016-07
Volume
16
Issue
3
Pages
707-716
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2465530714
Cited by
206
References
44
Citations by year
2026: 19 · 2025: 18 · 2024: 18 · 2023: 12 · 2022: 22 · 2021: 30 · 2020: 18 · 2019: 26 · 2018: 20 · 2017: 18 · 2016: 5
FWCI
11.95
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Informationszentrum Lebenswissenschaften (ZB MED) (submittedVersion, cc-by-nc-nd)
Funders
  • Nutrition Obesity Research Center, University of North Carolina (P30DK072476)
  • Deutsche Forschungsgemeinschaft (ADA 1-12-BS-58, DK-096311, LA 3042/2-1, R01DK047348, R01DK092587)
  • National Institutes of Health (R01DK081563, R01DK105032)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fibroblast Growth Factor Research
  • Health Sciences › Medicine › Physiology › Dietary Effects on Health
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
Keywords
FGF21, GCN2, protein restriction, low-protein diet, amino acid sensing, dietary intake, energy expenditure, weight gain, metabolic gene expression, FGF21 knockout mice
MeSH terms
Animals, Body Weight, Dietary Proteins, Eating, Energy Metabolism, Fibroblast Growth Factors, Male, Mice, Inbred C57BL, Gene Expression, Protein Serine-Threonine Kinases, Mice, Knockout, Diet, Protein-Restricted, Mice

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