ArticleNature communications2025
Stimulation of corticospinal neurons by optogenetic cAMP inductions promotes motor recovery after spinal cord injury in female rats via raphespinal tract modulation.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Optogenetic innovations in stem cell therapy: Illuminating the path for transplanted cells after spinal cord injury.Neural regeneration research · 2026Article
- Fetal rat neural progenitor cell transplantation after spinal cord injury improves motor recovery following optogenetic stimulation.Molecular therapy : the journal of the American Society of Gene Therapy · 2025Article
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16 authors.
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Abstract
After spinal cord injury (SCI), cyclic adenosine monophosphate (cAMP) levels drop in the spinal cord, cortex and brainstem, unlike in regenerating peripheral neurons. To address SCI recovery, we expressed photoactivatable adenylate cyclase (bPAC) in corticospinal neurons of female rats with dorsal hemisection for on-demand cAMP inductions. bPAC stimulation restored passive and firing properties of corticospinal neurons, promoted early and sustained locomotor recovery and increased corticospinal tract plasticity. Additionally, bPAC enhanced sparing of lumbar-projecting brainstem neurons after SCI, accompanied by activation of cAMP signaling in the raphe-reticular formation and increased excitatory/inhibitory neurotransmitter balance. Accordingly, augmented density of serotonergic tracts was found caudal to the injury in bPAC rats, correlating with enhanced functional performance. Serotonergic implication in motor recovery was further evidenced by selective depletion, resulting in the abrogation of bPAC-mediated recovery. Overall, our findings underscore that cAMP induction in corticospinal neurons enhances locomotion after SCI, through a cortical rerouting pathway via the serotonergic descending tract.
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