Cell types and neuronal genetic architecture in the rat CSF-contacting nucleus and the role of 5-HT in this nucleus in mediating morphine addiction through the brain–CSF circuit

The present study delineates the single-cell transcriptional architecture and cellular composition of the CSF-contacting nucleus. Bioinformatics analyses revealed the involvement of the CSF-contacting nucleus in multiple addiction-related pathways for various substances of abuse and neurodegenerative disorders. These findings suggest that the CSF-contacting nucleus plays multifaceted roles in neural circuitry, particularly serving as a crucial mediator in neuro-cerebrospinal fluid regulatory mechanisms.