Dysferlin Enables Tubular Membrane Proliferation in Cardiac Hypertrophy.
cell membrane
constriction
dysferin
mice
phenotype
Journal
Circulation research
ISSN: 1524-4571
Titre abrégé: Circ Res
Pays: United States
ID NLM: 0047103
Informations de publication
Date de publication:
16 Jul 2024
16 Jul 2024
Historique:
medline:
16
7
2024
pubmed:
16
7
2024
entrez:
16
7
2024
Statut:
aheadofprint
Résumé
Cardiac hypertrophy compensates for increased biomechanical stress of the heart induced by prevalent cardiovascular pathologies but can result in cardiac failure if left untreated. We hypothesized that the tail-anchored protein dysferlin with multiple Ca To reveal the impact of the membrane fusion and repair protein dysferlin on TAT network stabilization and proliferation necessary for the hypertrophic growth of cardiomyocytes. Super-resolution light and electron microscopy of mouse cardiomyocytes identified a specific localization of dysferlin in a vesicular compartment in nanometric proximity to contact sites of the TAT network with the sarcoplasmic reticulum, a.k.a. junctional complexes for Ca Dysferlin represents a new molecular target in cardiac disease that protects the integrity of tubule-sarcoplasmic reticulum junctional complexes for regulated excitation-contraction coupling and controls TAT network reorganization and tubular membrane proliferation in cardiomyocyte hypertrophy induced by pressure overload.
Sections du résumé
BACKGROUND
UNASSIGNED
Cardiac hypertrophy compensates for increased biomechanical stress of the heart induced by prevalent cardiovascular pathologies but can result in cardiac failure if left untreated. We hypothesized that the tail-anchored protein dysferlin with multiple Ca
OBJECTIVE
UNASSIGNED
To reveal the impact of the membrane fusion and repair protein dysferlin on TAT network stabilization and proliferation necessary for the hypertrophic growth of cardiomyocytes.
METHODS AND RESULTS
UNASSIGNED
Super-resolution light and electron microscopy of mouse cardiomyocytes identified a specific localization of dysferlin in a vesicular compartment in nanometric proximity to contact sites of the TAT network with the sarcoplasmic reticulum, a.k.a. junctional complexes for Ca
CONCLUSIONS
UNASSIGNED
Dysferlin represents a new molecular target in cardiac disease that protects the integrity of tubule-sarcoplasmic reticulum junctional complexes for regulated excitation-contraction coupling and controls TAT network reorganization and tubular membrane proliferation in cardiomyocyte hypertrophy induced by pressure overload.
Identifiants
pubmed: 39011635
doi: 10.1161/CIRCRESAHA.124.324588
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM