Résumé
Despite its high prevalence and economic burden, the aetiology of human hypertension remains incompletely understood. Here we identify the transcription factor GATA5, as a new regulator of blood pressure (BP). GATA5 is expressed in microvascular endothelial cells and its genetic inactivation in mice (Gata5-null) leads to vascular endothelial dysfunction and hypertension. Endothelial-specific inactivation of Gata5 mimics the hypertensive phenotype of the Gata5-null mice, suggestive of an important role for GATA5 in endothelial homeostasis. Transcriptomic analysis of human microvascular endothelial cells with GATA5 knockdown reveals that GATA5 affects several genes and pathways critical for proper endothelial function, such as PKA and nitric oxide pathways. Consistent with a role in human hypertension, we report genetic association of variants at the GATA5 locus with hypertension traits in two large independent cohorts. Our results unveil an unsuspected link between GATA5 and a prominent human condition, and provide a new animal model for hypertension.
Langue d'origine | English |
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Numéro d'article | 8835 |
Journal | Nature Communications |
Volume | 6 |
DOI | |
Statut de publication | Published - nov. 30 2015 |
Publié à l'externe | Oui |
Note bibliographique
Funding Information:We are grateful to Drs Chris Kennedy and Dylan Burger for advice and reagents and to Megan Fortier, Janie Beauregard, Carole Long, Mounsif Haloui and the uOttawa Histology Core for Technical Support. We thank Franc¸ois-Christophe Blanchet-Marois and Franc¸ois Harvey for bioinformatics analyses and John Raelson for statistical analysis. The members of the genetic sub-study of ADVANCE, Stephen Harrap and Michel Marre are also acknowledged. This work was supported by grants from the Canadian Institute of Health Research (CIHR). The genetic epidemiological work of ADVANCE sub-study was funded by Prognomix Inc. and grants from Genome Quebec and CIHR. The clinical study was managed by the George Institute for international Health (Sydney, Australia) with grants received from Les Laboratoires Servier, France and from the Medical Research Council of Australia.
ASJC Scopus Subject Areas
- General Chemistry
- General Biochemistry,Genetics and Molecular Biology
- General Physics and Astronomy
PubMed: MeSH publication types
- Journal Article
- Research Support, Non-U.S. Gov't