Cardiotrophin-1 stimulation of cardiac fibroblast growth: Roles for glycoprotein 130/leukemia inhibitory factor receptor and the endothelin type A receptor

Toshihiro Tsuruda, Michihisa Jougasaki, Guido Boerrigter, Brenda K. Huntley, Horng Haur Chen, Antonio D'Assoro, Shang C. Lee, Amy M. Larsen, Alessandro Cataliotti, John C Jr. Burnett

Research output: Contribution to journalArticle

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Abstract

Cardiotrophin-1 (CT-1), a member of the interleukin-6 superfamily, and endothelin-1 (ET-1) are potent hypertrophic factors in cardiomyocytes. Although CT-1 and ET-1 gene expression in the heart is upregulated in experimental heart failure, their role in the activation of the cardiac fibroblast is unknown. This study was designed to identify the presence and action of CT-1 and its receptor complex, glycoprotein130 (gp130) and leukemia inhibitory factor (LIF) receptor, on cardiac fibroblast growth in cultured adult canine cardiac fibroblasts. In addition, we investigated the interaction between CT-1/gp130/LIF receptor and ET-1/endothelin type A (ET A) receptor axis. Immunohistochemistry was performed using the indirect immunoperoxidase method, while we assessed the cell cycle of cardiac fibroblasts by flow cytometry, DNA synthesis by [ 3H]thymidine incorporation, and collagen synthesis by [ 3H]proline incorporation, respectively. CT-1 and gp130/LIF receptor were widely present in the cytoplasm of the cardiac fibroblasts. Exogenous CT-1 markedly stimulated [ 3H]thymidine and [ 3H]proline incorporations (P<0.01), with accumulation of cells in the S phase. Blockade of gp130 or LIF receptor inhibited basal growth as well as CT-1- or ET-1-stimulated cardiac fibroblast growth. The specific ET A receptor antagonist, BQ123, significantly inhibited CT-1-stimulated DNA synthesis. This study demonstrates that CT-1 and its receptors are present in cardiac fibroblasts. In addition, growth of these cells stimulated by endogenous and exogenous CT-1 requires gp130/LIF receptor as well as ET A receptor activation. We conclude that gp130/LIF receptor and ET A receptor activation are essential for cardiac fibroblast growth by CT-1 and that there is synergism with ET-1/ET A receptor axis.

Original languageEnglish (US)
Pages (from-to)128-134
Number of pages7
JournalCirculation Research
Volume90
Issue number2
DOIs
StatePublished - Feb 8 2002

Fingerprint

OSM-LIF Receptors
Endothelin A Receptors
Glycoproteins
Fibroblasts
Growth
Endothelin-1
Proline
Thymidine
cardiotrophin 1
DNA
S Phase
Cardiac Myocytes
Canidae

Keywords

  • Cardiac fibroblast
  • Cardiotrophin-1
  • Endothelin-type A receptor
  • Glycoprotein130
  • Leukemia inhibitory factor receptor

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine

Cite this

Cardiotrophin-1 stimulation of cardiac fibroblast growth : Roles for glycoprotein 130/leukemia inhibitory factor receptor and the endothelin type A receptor. / Tsuruda, Toshihiro; Jougasaki, Michihisa; Boerrigter, Guido; Huntley, Brenda K.; Chen, Horng Haur; D'Assoro, Antonio; Lee, Shang C.; Larsen, Amy M.; Cataliotti, Alessandro; Burnett, John C Jr.

In: Circulation Research, Vol. 90, No. 2, 08.02.2002, p. 128-134.

Research output: Contribution to journalArticle

Tsuruda, Toshihiro ; Jougasaki, Michihisa ; Boerrigter, Guido ; Huntley, Brenda K. ; Chen, Horng Haur ; D'Assoro, Antonio ; Lee, Shang C. ; Larsen, Amy M. ; Cataliotti, Alessandro ; Burnett, John C Jr. / Cardiotrophin-1 stimulation of cardiac fibroblast growth : Roles for glycoprotein 130/leukemia inhibitory factor receptor and the endothelin type A receptor. In: Circulation Research. 2002 ; Vol. 90, No. 2. pp. 128-134.
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abstract = "Cardiotrophin-1 (CT-1), a member of the interleukin-6 superfamily, and endothelin-1 (ET-1) are potent hypertrophic factors in cardiomyocytes. Although CT-1 and ET-1 gene expression in the heart is upregulated in experimental heart failure, their role in the activation of the cardiac fibroblast is unknown. This study was designed to identify the presence and action of CT-1 and its receptor complex, glycoprotein130 (gp130) and leukemia inhibitory factor (LIF) receptor, on cardiac fibroblast growth in cultured adult canine cardiac fibroblasts. In addition, we investigated the interaction between CT-1/gp130/LIF receptor and ET-1/endothelin type A (ET A) receptor axis. Immunohistochemistry was performed using the indirect immunoperoxidase method, while we assessed the cell cycle of cardiac fibroblasts by flow cytometry, DNA synthesis by [ 3H]thymidine incorporation, and collagen synthesis by [ 3H]proline incorporation, respectively. CT-1 and gp130/LIF receptor were widely present in the cytoplasm of the cardiac fibroblasts. Exogenous CT-1 markedly stimulated [ 3H]thymidine and [ 3H]proline incorporations (P<0.01), with accumulation of cells in the S phase. Blockade of gp130 or LIF receptor inhibited basal growth as well as CT-1- or ET-1-stimulated cardiac fibroblast growth. The specific ET A receptor antagonist, BQ123, significantly inhibited CT-1-stimulated DNA synthesis. This study demonstrates that CT-1 and its receptors are present in cardiac fibroblasts. In addition, growth of these cells stimulated by endogenous and exogenous CT-1 requires gp130/LIF receptor as well as ET A receptor activation. We conclude that gp130/LIF receptor and ET A receptor activation are essential for cardiac fibroblast growth by CT-1 and that there is synergism with ET-1/ET A receptor axis.",
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AU - D'Assoro, Antonio

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