Cited by 374Peroxisome Proliferator-Activated ReceptorsCardiac Fibrosis and RemodelingCardiovascular Function and Risk Factors

Transverse aortic constriction leads to accelerated heart failure in mice lacking PPAR-γ coactivator 1α

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Arany, Zoltan, Novikov, Mikhail, Chin, Sherry, Ma, Yanhong, Rosenzweig, Anthony, Spiegelman, Bruce M.·2006·Proceedings of the National Academy of Sciences

Abstract

Heart failure is accompanied by important defects in metabolism. The transcriptional coactivator peroxisome proliferator-activated receptor-γ coactivator 1α (PGC-1α) is a powerful regulator of mitochondrial biology and metabolism. PGC-1α and numerous genes regulated by PGC-1α are repressed in models of cardiac stress, such as that generated by transverse aortic constriction (TAC). This finding has suggested that PGC-1α repression may contribute to the maladaptive response of the heart to chronic hemodynamic loads. We show here that TAC in mice genetically engineered to lack PGC-1α leads to accelerated cardiac dysfunction, which is accompanied by signs of significant clinical heart failure. Treating cardiac cells in tissue culture with the catecholamine epinephrine leads to repression of PGC-1α and many of its target genes, recapitulating the findings in vivo in response to TAC. Importantly, introduction of ectopic PGC-1α can reverse the repression of most of these genes by epinephrine. Together, these data indicate that endogenous PGC-1α serves a cardioprotective function and suggest that repression of PGC-1α significantly contributes to the development of heart failure. Moreover, the data suggest that elevating PGC-1α activity may have therapeutic potential in the treatment of heart failure.

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Crossref · 10.1073/pnas.0603615103

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  • Repression of PGC-1α or PGC-1β decreases mitochondrial biogenesis and function, causes cardiomyopathy, and impairs de novo glucose production.

    “Previous work has established that repression of either or both co-activators (PGC-1α or PGC-1β) decreases mitochondrial biogenesis and function, elicits cardiomyopathy and impairs de novo glucose production23-25.”

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Authors
Arany, Z., Novikov, M., Chin, S., Ma, Y., Rosenzweig, A., & Spiegelman, B. M.
Affiliations
  • Harvard University (US)
  • Beth Israel Deaconess Medical Center (US)
Corresponding author
Spiegelman, Bruce M.
Venue
Proceedings of the National Academy of Sciences
Published
2006-06-27
Volume
103
Issue
26
Pages
10086-10091
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2103634232
Cited by
374
References
48
Citations by year
2026: 4 · 2025: 9 · 2024: 11 · 2023: 20 · 2022: 21 · 2021: 32 · 2020: 23 · 2019: 18 · 2018: 18 · 2017: 20 · 2016: 15 · 2015: 32 · 2014: 27 · 2013: 15 · 2012: 25
FWCI
6.25
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
Funders
  • National Heart, Lung, and Blood Institute (K08HL079172, HL-077543, HL079172, R01HL077543)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK54477, R56DK054477, R01DK061562, R01DK054477, DK 61562)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Fibrosis and Remodeling
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
Keywords
PGC-1α, heart failure, transverse aortic constriction, cardiac hypertrophy, epinephrine, mitochondrial metabolism, transcriptional repression, cardioprotection, cardiac dysfunction, heart failure treatment
MeSH terms
Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha, Animals, Aorta, Cardiac Output, Low, Constriction, Pathologic, Epinephrine, Gene Expression Regulation, Mutation, Transcription Factors, Trans-Activators, Down-Regulation, Mice, Knockout, Myocytes, Cardiac, Mice

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