Journal
GLIA
Volume 70, Issue 12, Pages 2426-2440Publisher
WILEY
DOI: 10.1002/glia.24262
Keywords
baclofen; GABA(B) receptor; multiple sclerosis; myelin; oligodendrocyte; remyelination
Categories
Funding
- CIBERNED [CB06/05/0076]
- Basque Government [IT1203-19, IT702-13]
- Ministry of Economy and Competitiveness, Government of Spain [SAF2015-74332-JIN, PID2019-109724RBI00, SAF2016-75292-R, SAF2013-45084-R]
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The GABA(B)R agonist baclofen has the potential to enhance oligodendrocyte progenitor cell differentiation and remyelination, suggesting it as a potential therapeutic strategy to stimulate remyelination in patients with multiple sclerosis (MS).
Promoting remyelination is considered as a potential neurorepair strategy to prevent/limit the development of permanent neurological disability in patients with multiple sclerosis (MS). To this end, a number of clinical trials are investigating the potential of existing drugs to enhance oligodendrocyte progenitor cell (OPC) differentiation, a process that fails in chronic MS lesions. We previously reported that oligodendroglia express GABA(B) receptors (GABA(B)Rs) both in vitro and in vivo, and that GABA(B)R-mediated signaling enhances OPC differentiation and myelin protein expression in vitro. Our goal here was to evaluate the pro-remyelinating potential of GABA(B)R agonist baclofen (Bac), a clinically approved drug to treat spasticity in patients with MS. We first demonstrated that Bac increases myelin protein production in lysolecithin (LPC)-treated cerebellar slices. Importantly, Bac administration to adult mice following induction of demyelination by LPC injection in the spinal cord resulted in enhanced OPC differentiation and remyelination. Thus, our results suggest that Bac repurposing should be considered as a potential therapeutic strategy to stimulate remyelination in patients with MS.
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