Cited by 283Sirtuins and Resveratrol in MedicineAdipose Tissue and MetabolismMetabolism, Diabetes, and Cancer

Sirt3 regulates metabolic flexibility of skeletal muscle through reversible enzymatic deacetylation

Open access
Jing, Enxuan, O’Neill, Brian T., Rardin, Matthew J., Kleinridders, André, Ilkeyeva, Olga R., Ussar, Siegfried, Bain, James R., Lee, Kevin Y. +4 more·2013·Diabetes

Abstract

Sirt3 is an NAD+-dependent deacetylase that regulates mitochondrial function by targeting metabolic enzymes and proteins. In fasting mice, Sirt3 expression is decreased in skeletal muscle resulting in increased mitochondrial protein acetylation. Deletion of Sirt3 led to impaired glucose oxidation in muscle, which was associated with decreased pyruvate dehydrogenase (PDH) activity, accumulation of pyruvate and lactate metabolites, and an inability of insulin to suppress fatty acid oxidation. Antibody-based acetyl-peptide enrichment and mass spectrometry of mitochondrial lysates from WT and Sirt3 KO skeletal muscle revealed that a major target of Sirt3 deacetylation is the E1α subunit of PDH (PDH E1α). Sirt3 knockout in vivo and Sirt3 knockdown in myoblasts in vitro induced hyperacetylation of the PDH E1α subunit, altering its phosphorylation leading to suppressed PDH enzymatic activity. The inhibition of PDH activity resulting from reduced levels of Sirt3 induces a switch of skeletal muscle substrate utilization from carbohydrate oxidation toward lactate production and fatty acid utilization even in the fed state, contributing to a loss of metabolic flexibility. Thus, Sirt3 plays an important role in skeletal muscle mitochondrial substrate choice and metabolic flexibility in part by regulating PDH function through deacetylation.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.2337/db12-1650

Cites

52 of 52 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Jing, E., O’Neill, B. T., Rardin, M. J., Kleinridders, A., Ilkeyeva, O. R., Ussar, S., Bain, J. R., Lee, K. Y., Verdin, E. M., Newgard, C. B., Gibson, B. W., & Kahn, C. R.
Affiliations
  • Joslin Diabetes Center (US)
  • Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts
  • Buck Institute for Research on Aging (US)
  • Duke Medical Center (US)
  • Gladstone Institutes (US)
Corresponding author
Kahn, C. Ronald
Venue
Diabetes
Published
2013-09-17
Volume
62
Issue
10
Pages
3404-3417
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2159430439
Cited by
283
References
52
Citations by year
2026: 10 · 2025: 23 · 2024: 16 · 2023: 18 · 2022: 24 · 2021: 28 · 2020: 21 · 2019: 24 · 2018: 28 · 2017: 17 · 2016: 22 · 2015: 26 · 2014: 24 · 2013: 2
FWCI
11.48
Type
journal article
Language
en
Open access
Locations
  • Diabetes (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Deutsche Forschungsgemeinschaft
  • National Institutes of Health
  • National Institute on Aging (P30AG028716)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R24DK085610, T32DK007260, P30DK036836)
  • National Center for Research Resources (S10RR024615)
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
SIRT3, NAD+-dependent deacetylase, skeletal muscle, metabolic flexibility, pyruvate dehydrogenase, protein acetylation, glucose oxidation, fatty acid oxidation, lactic acid production, insulin signaling, fasting, myoblasts
MeSH terms
Acetylation, Acetyltransferases, Animals, Fasting, Male, Mice, Inbred C57BL, Mitochondria, Oxidation-Reduction, Blotting, Western, Gene Expression Regulation, Enzymologic, Gene Deletion, Mice, Knockout, Oxidative Stress, Muscle, Skeletal, Mice, Sirtuin 3

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review