Transcriptional network analysis for the regulation of left ventricular hypertrophy and microvascular remodeling

Aida Moreno-Moral, Massimiliano Mancini, Giulia D'Amati, Paolo Camici, Enrico Petretto

Research output: Contribution to journalArticlepeer-review

Abstract

Hypertension and cardiomyopathies share maladaptive changes of cardiac morphology, eventually leading to heart failure. These include left ventricular hypertrophy (LVH), myocardial fibrosis, and structural remodeling of coronary microcirculation, which is the morphologic hallmark of coronary microvascular dysfunction. To pinpoint the complex molecular mechanisms and pathways underlying LVH-associated cardiac remodeling independent of blood pressure effects, we employed gene network approaches to the rat heart. We used the Spontaneously Hypertensive Rat model showing many features of human hypertensive cardiomyopathy, for which we collected histological and histomorphometric data of the heart and coronary vasculature, and genome-wide cardiac gene expression. Here, we provide a large catalogue of gene co-expression networks in the heart that are significantly associated with quantitative variation in LVH, microvascular remodeling, and fibrosis-related traits. Many of these networks were significantly conserved to human idiopathic and/or ischemic cardiomyopathy patients, suggesting a potential role for these co-expressed genes in human heart disease.

Original languageEnglish
Pages (from-to)931-944
Number of pages14
JournalJournal of Cardiovascular Translational Research
Volume6
Issue number6
DOIs
Publication statusPublished - Dec 2013

Keywords

  • Cardiac fibrosis
  • Coronary microvascular remodeling
  • Gene regulatory networks
  • Left ventricular hypertrophy
  • Spontaneously Hypertensive Rat (SHR)

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Genetics
  • Genetics(clinical)
  • Molecular Medicine
  • Pharmaceutical Science

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