Cited by 80Thyroid Disorders and TreatmentsCardiac Fibrosis and RemodelingEstrogen and related hormone effects

Thyroid hormone induces cardiac myocyte hypertrophy in a thyroid hormone receptor α1-specific manner that requires TAK1 and p38 mitogen-activated protein kinase

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Kinugawa, Koichiro, Jeong, Mark Y., Bristow, Michael R., Long, Carlin S.·2005·Molecular Endocrinology

Abstract

Alterations in TR [thyroid hormone (TH) receptor]1 isoform expression have been reported in models of both physiologic and pathologic cardiac hypertrophy as well as in patients with heart failure. In this report, we demonstrate that TH induces hypertrophy as a direct result of binding to the TRalpha1 isoform and, moreover, that overexpression of TRalpha1 alone is also associated with a hypertrophic phenotype, even in the absence of ligand. The mechanism of TH and TRalpha1-specific hypertrophy is novel for a nuclear hormone receptor and involves the transforming growth factor beta-activated kinase (TAK1) and p38. Mitigating TRalpha1 effects, both TRalpha2 and TRbeta1 attenuate TRalpha1-induced myocardial growth and gene expression by diminishing TAK1 and p38 activities, respectively. These findings refine our previous observations on TR expression in the hypertrophied and failing heart and suggest that manipulation of thyroid hormone signaling in an isoform-specific manner may be a relevant therapeutic target for altering the pathologic myocardial program.

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Registry

Crossref · 10.1210/me.2004-0503

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Authors
Kinugawa, K., Jeong, M. Y., Bristow, M. R., & Long, C. S.
Affiliations
  • Denver Health Medical Center (US)
  • Division of Cardiology (M.R.B., C.S.L.), Denver, Colorado 80204
Corresponding author
Long, Carlin S.
Venue
Molecular Endocrinology
Published
2005-06-01
Volume
19
Issue
6
Pages
1618-1628
ISSN
  • 0888-8809 (ISSN-L)
  • 1944-9917
OpenAlex
W2133338733
Cited by
80
References
48
Citations by year
2025: 2 · 2024: 2 · 2023: 1 · 2022: 2 · 2021: 3 · 2020: 6 · 2019: 3 · 2018: 2 · 2017: 3 · 2016: 7 · 2015: 1 · 2014: 7 · 2013: 1 · 2012: 4
FWCI
3.75
Type
journal article
Language
en
Open access
Locations
  • Molecular Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Veterans Affairs
  • University of California, San Diego
  • University of California, San Francisco
  • National Heart, Lung, and Blood Institute (R01HL066399)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Fibrosis and Remodeling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
Keywords
thyroid hormones, cardiomyocyte hypertrophy, thyroid hormone receptor alpha 1, TRα2, thyroid hormone receptor beta 1, TAK1, p38 MAPK, heart failure, ligand-independent receptor activation
MeSH terms
MAP Kinase Kinase Kinase 7, Adenoviridae, Animals, Cell Nucleus, Cells, Cultured, Cytosol, Dose-Response Relationship, Drug, Enzyme Inhibitors, Humans, Hypertrophy, Imidazoles, Ligands, Microscopy, Fluorescence, Models, Biological, Myocardium, Protein Binding, Pyridines, Rabbits, Receptors, Thyroid Hormone, Ribonucleases, Thyroid Hormones, Time Factors, Blotting, Western, Signal Transduction, DNA, Complementary, Protein Isoforms, Inhibitory Concentration 50, MAP Kinase Kinase Kinases, Muscle Cells, Myocytes, Cardiac, Thyroid Hormone Receptors alpha, Immunoprecipitation, p38 Mitogen-Activated Protein Kinases, Cell Proliferation, Rats

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