Progressive cardiomyopathy with intercalated disc disorganization in a rat model of Becker dystrophy.

Becker Muscular Dystrophy Connexins Dilated Cardiomyopathy Heart Failure Tmem65

Journal

EMBO reports
ISSN: 1469-3178
Titre abrégé: EMBO Rep
Pays: England
ID NLM: 100963049

Informations de publication

Date de publication:
02 Oct 2024
Historique:
received: 28 11 2023
accepted: 22 08 2024
revised: 09 08 2024
medline: 3 10 2024
pubmed: 3 10 2024
entrez: 2 10 2024
Statut: aheadofprint

Résumé

Becker muscular dystrophy (BMD) is an X-linked disorder due to in-frame mutations in the DMD gene, leading to a less abundant and truncated dystrophin. BMD is less common and severe than Duchenne muscular dystrophy (DMD) as well as less investigated. To accelerate the search for innovative treatments, we developed a rat model of BMD by deleting the exons 45-47 of the Dmd gene. Here, we report a functional and histopathological evaluation of these rats during their first year of life, compared to DMD and control littermates. BMD rats exhibit moderate damage to locomotor and diaphragmatic muscles but suffer from a progressive cardiomyopathy. Single nuclei RNA-seq analysis of cardiac samples revealed shared transcriptomic abnormalities in BMD and DMD rats and highlighted an altered end-addressing of TMEM65 and Connexin-43 at the intercalated disc, along with electrocardiographic abnormalities. Our study documents the natural history of a translational preclinical model of BMD and reports a cellular mechanism for the cardiac dysfunction in BMD and DMD offering opportunities to further investigate the organization role of dystrophin in intercellular communication.

Identifiants

pubmed: 39358550
doi: 10.1038/s44319-024-00249-9
pii: 10.1038/s44319-024-00249-9
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Subventions

Organisme : AFM Telethon
ID : 19507
Organisme : AFM Telethon
ID : 22946
Organisme : Fondation pour la Recherche Médicale (FRM)
ID : EQU20200301021
Organisme : Fondation pour la Recherche Médicale (FRM)
ID : SPF20170938733
Organisme : Agence Nationale de la Recherche (ANR)
ID : ANR-21-CE13-0006
Organisme : Agence Nationale de la Recherche (ANR)
ID : ANR-10-LABX-73

Informations de copyright

© 2024. The Author(s).

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Auteurs

Valentina Taglietti (V)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France. valentina.taglietti@inserm.fr.

Kaouthar Kefi (K)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France.

Busra Mirciloglu (B)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France.
École nationale vétérinaire d'Alfort, U955 IMRB, F-94700, Maisons-Alfort, France.

Sultan Bastu (S)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France.

Jean-Daniel Masson (JD)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France.
École nationale vétérinaire d'Alfort, U955 IMRB, F-94700, Maisons-Alfort, France.

Iwona Bronisz-Budzyńska (I)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France.
École nationale vétérinaire d'Alfort, U955 IMRB, F-94700, Maisons-Alfort, France.

Vassiliki Gouni (V)

ADVETIA, Centre Hospitalier Vétérinaire, F-78140, Vélizy-Villacoublay, France.

Carlotta Ferri (C)

ADVETIA, Centre Hospitalier Vétérinaire, F-78140, Vélizy-Villacoublay, France.

Alan Jorge (A)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France.
École nationale vétérinaire d'Alfort, U955 IMRB, F-94700, Maisons-Alfort, France.

Christel Gentil (C)

Sorbonne Université, INSERM, UMRS974, Center for Research in Myology, F-75013, Paris, France.

France Pietri-Rouxel (F)

Sorbonne Université, INSERM, UMRS974, Center for Research in Myology, F-75013, Paris, France.

Edoardo Malfatti (E)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France.
APHP, Filnemus, EuroNMD, Centre de Référence de Pathologie Neuromusculaire Nord-Est-Ile-de-France, Departement Pathologie, Henri Mondor Hospital, F-94010, Créteil, France.

Peggy Lafuste (P)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France.

Laurent Tiret (L)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France.
École nationale vétérinaire d'Alfort, U955 IMRB, F-94700, Maisons-Alfort, France.

Frederic Relaix (F)

Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010, Créteil, France. frederic.relaix@inserm.fr.
École nationale vétérinaire d'Alfort, U955 IMRB, F-94700, Maisons-Alfort, France. frederic.relaix@inserm.fr.
EFS, IMRB, F-94010, Créteil, France. frederic.relaix@inserm.fr.

Classifications MeSH