A-Kinase Anchoring Protein 2 Promotes Protection against Myocardial Infarction.

Détails

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Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_03C005C7A0F6
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
A-Kinase Anchoring Protein 2 Promotes Protection against Myocardial Infarction.
Périodique
Cells
Auteur⸱e⸱s
Maric D., Paterek A., Delaunay M., López I.P., Arambasic M., Diviani D.
ISSN
2073-4409 (Electronic)
ISSN-L
2073-4409
Statut éditorial
Publié
Date de publication
23/10/2021
Peer-reviewed
Oui
Volume
10
Numéro
11
Pages
2861
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: epublish
Résumé
Myocardial infarction (MI) is a leading cause of maladaptive cardiac remodeling and heart failure. In the damaged heart, loss of function is mainly due to cardiomyocyte death and remodeling of the cardiac tissue. The current study shows that A-kinase anchoring protein 2 (AKAP2) orchestrates cellular processes favoring cardioprotection in infarcted hearts. Induction of AKAP2 knockout (KO) in cardiomyocytes of adult mice increases infarct size and exacerbates cardiac dysfunction after MI, as visualized by increased left ventricular dilation and reduced fractional shortening and ejection fraction. In cardiomyocytes, AKAP2 forms a signaling complex with PKA and the steroid receptor co-activator 3 (Src3). Upon activation of cAMP signaling, the AKAP2/PKA/Src3 complex favors PKA-mediated phosphorylation and activation of estrogen receptor α (ERα). This results in the upregulation of ER-dependent genes involved in protection against apoptosis and angiogenesis, including Bcl2 and the vascular endothelial growth factor a (VEGFa). In line with these findings, cardiomyocyte-specific AKAP2 KO reduces Bcl2 and VEGFa expression, increases myocardial apoptosis and impairs the formation of new blood vessels in infarcted hearts. Collectively, our findings suggest that AKAP2 organizes a transcriptional complex that mediates pro-angiogenic and anti-apoptotic responses that protect infarcted hearts.
Mots-clé
A-kinase-anchoring protein (AKAP), cAMP, cardiomyocyte, myocardial infarction, protein kinase A, scaffolding proteins
Pubmed
Web of science
Open Access
Oui
Création de la notice
03/12/2021 10:51
Dernière modification de la notice
23/11/2022 7:08
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