Transcriptome characterization of estrogen-treated human myocardium identifies myosin regulatory light chain interacting protein as a sex-specific element influencing contractile function

Georgios Kararigas, Virginie Bito, Hanna Tinel, Eva Becher, I. Baczkó, Christoph Knosalla, Barbara Albrecht-Kpper, Karin R. Sipido, Vera Regitz-Zagrosek

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Objectives: This study investigated the effects of 17β-estradiol (E2) on gene regulation in human cardiac tissues. We hypothesized that a candidate E2 effect is cardiomyocyte (CM)- and sex-specific, conserved between humans and mice, and that E2 impairs contractile function in male CMs only. Background: Both men and women produce E2 locally from androgenic precursors. E2 regulates cardiovascular function, but specific mechanisms, protective or harmful, are not fully understood. Methods: We performed genome-wide expression profiling of E2-treated cardiac tissues from men and women, and studied gene expression and function in CMs from hearts of male and female E2-treated mice. Results: We found 36 E2-dependent genes regulated in a sex-specific manner. Of these, after E2 exposure, the myosin regulatory light chain interacting protein (MYLIP) gene was induced in tissues of men only. Focusing on Mylip and employing isolated mouse CMs, we confirmed our hypotheses that the E2 effect is CM- and sex-specific and conserved between humans and mice. The E2-treatment led to impaired contractile function in male CMs only, which was characterized by increased Mylip mRNA and protein levels, and decreased myosin regulatory light chain (Mrlc) protein. Our report is the first to our knowledge to show that cardiac Mrlc is an in vivo substrate for Mylip, leading to augmented Mrlc ubiquitination. Of relevance, we found that MYLIP expression levels rise with increasing age in hearts of men. Conclusions: E2 directly influences cardiac gene regulation, and E2 actions may be different between the sexes. Since E2 levels rise in older and/or obese men, pharmacological targeting of MYLIP in men with elevated E2 levels could possibly decrease their risk for the development or progression of cardiovascular disease.

Original languageEnglish
Pages (from-to)410-417
Number of pages8
JournalJournal of the American College of Cardiology
Volume59
Issue number4
DOIs
Publication statusPublished - Jan 24 2012

Fingerprint

Myosin Light Chains
Transcriptome
Myocardium
Estrogens
Proteins
Cardiac Myocytes
Cardiac Myosins
Ubiquitination
Gene Expression Regulation
Genes
Estradiol
Cardiovascular Diseases
Genome
Pharmacology
Gene Expression
Messenger RNA

Keywords

  • contractility
  • estrogen
  • gene expression
  • gene regulation
  • genomics
  • sex-specific

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Transcriptome characterization of estrogen-treated human myocardium identifies myosin regulatory light chain interacting protein as a sex-specific element influencing contractile function. / Kararigas, Georgios; Bito, Virginie; Tinel, Hanna; Becher, Eva; Baczkó, I.; Knosalla, Christoph; Albrecht-Kpper, Barbara; Sipido, Karin R.; Regitz-Zagrosek, Vera.

In: Journal of the American College of Cardiology, Vol. 59, No. 4, 24.01.2012, p. 410-417.

Research output: Contribution to journalArticle

Kararigas, Georgios ; Bito, Virginie ; Tinel, Hanna ; Becher, Eva ; Baczkó, I. ; Knosalla, Christoph ; Albrecht-Kpper, Barbara ; Sipido, Karin R. ; Regitz-Zagrosek, Vera. / Transcriptome characterization of estrogen-treated human myocardium identifies myosin regulatory light chain interacting protein as a sex-specific element influencing contractile function. In: Journal of the American College of Cardiology. 2012 ; Vol. 59, No. 4. pp. 410-417.
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AU - Becher, Eva

AU - Baczkó, I.

AU - Knosalla, Christoph

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