Rxivist combines preprints from bioRxiv with data from Twitter to help you find the papers being discussed in your field. Currently indexing 70,235 bioRxiv papers from 306,680 authors.
Disruption of the CSF-1-CSF-1R axis alters cerebellar microglia and is associated with motor and social interaction defects
Fiona A. Desland,
Meghan E. Flanigan,
Samuel A Rose,
Hortense Le Bouris,
E. Richard Stanley,
Scott J. Russo,
Brian D. Brown,
Alexandra L. Joyner,
Lotje De Witte,
Posted 17 May 2019
bioRxiv DOI: 10.1101/639526
Posted 17 May 2019
Microglia, the brain resident macrophages, critically shape forebrain neuronal circuits. However, their precise function in the cerebellum is unknown. Here we show that human and mouse cerebellar microglia express a unique molecular program distinct from forebrain microglia. Cerebellar microglial identity was driven by the CSF-1R ligand CSF-1, independently of the alternate CSF-1R ligand, IL-34. Accordingly, CSF-1 depletion from Nestin+ cells led to severe depletion and transcriptional alterations of cerebellar microglia, while microglia in the forebrain remained intact. Strikingly, CSF-1 deficiency and alteration of cerebellar microglia were associated with reduced Purkinje cells, altered neuronal function, and defects in motor learning and social novelty interactions. These findings reveal a novel CSF-1-CSF-1R signaling-mediated mechanism that contributes to motor function and social behavior.
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