Up-Regulation of Astrocytic Fgfr4 Expression in Adult Mice after Spinal Cord Injury - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Cells Année : 2023

Up-Regulation of Astrocytic Fgfr4 Expression in Adult Mice after Spinal Cord Injury

Résumé

Spinal cord injury (SCI) leads to persistent neurological deficits without available curative treatment. After SCI astrocytes within the lesion vicinity become reactive, these undergo major morphological, and molecular transformations. Previously, we reported that following SCI, over 10% of resident astrocytes surrounding the lesion spontaneously transdifferentiate towards a neuronal phenotype. Moreover, this conversion is associated with an increased expression of fibroblast growth factor receptor 4 (Fgfr4), a neural stem cell marker, in astrocytes. Here, we evaluate the therapeutic potential of gene therapy upon Fgfr4 over-expression in mature astrocytes following SCI in adult mice. We found that Fgfr4 over-expression in astrocytes immediately after SCI improves motor function recovery; however, it may display sexual dimorphism. Improved functional recovery is associated with a decrease in spinal cord lesion volume and reduced glial reactivity. Cell-specific transcriptomic profiling revealed concomitant downregulation of Notch signaling, and up-regulation of neurogenic pathways in converting astrocytes. Our findings suggest that gene therapy targeting Fgfr4 over-expression in astrocytes after injury is a feasible therapeutic approach to improve recovery following traumatism of the spinal cord. Moreover, we stress that a sex-dependent response to astrocytic modulation should be considered for the development of effective translational strategies in other neurological disorders.
Fichier principal
Vignette du fichier
cells-12-00528-v2.pdf (19.68 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04284559 , version 1 (14-11-2023)

Identifiants

Citer

Claire Mathilde Bringuier, Harun Najib Noristani, Jean-Christophe Perez, Maida Cardoso, Christophe Goze-Bac, et al.. Up-Regulation of Astrocytic Fgfr4 Expression in Adult Mice after Spinal Cord Injury. Cells, 2023, 12 (4), pp.528. ⟨10.3390/cells12040528⟩. ⟨hal-04284559⟩
16 Consultations
3 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More