SETDB1 modulates the TGFß response in Duchenne muscular dystrophy myotubes.
Sci Adv
; 10(18): eadj8042, 2024 May 03.
Article
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| MEDLINE
| ID: mdl-38691608
ABSTRACT
Overactivation of the transforming growth factor-ß (TGFß) signaling in Duchenne muscular dystrophy (DMD) is a major hallmark of disease progression, leading to fibrosis and muscle dysfunction. Here, we investigated the role of SETDB1 (SET domain, bifurcated 1), a histone lysine methyltransferase involved in muscle differentiation. Our data show that, following TGFß induction, SETDB1 accumulates in the nuclei of healthy myotubes while being already present in the nuclei of DMD myotubes where TGFß signaling is constitutively activated. Transcriptomics revealed that depletion of SETDB1 in DMD myotubes leads to down-regulation of TGFß target genes coding for secreted factors involved in extracellular matrix remodeling and inflammation. Consequently, SETDB1 silencing in DMD myotubes abrogates the deleterious effect of their secretome on myoblast differentiation by impairing myoblast pro-fibrotic response. Our findings indicate that SETDB1 potentiates the TGFß-driven fibrotic response in DMD muscles, providing an additional axis for therapeutic intervention.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Transducción de Señal
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Factor de Crecimiento Transformador beta
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N-Metiltransferasa de Histona-Lisina
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Fibras Musculares Esqueléticas
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Distrofia Muscular de Duchenne
Idioma:
En
Revista:
Sci Adv
Año:
2024
Tipo del documento:
Article