The cerebellum plays a critical role in both motor and non-motor functions, and its dysfunction is linked to various mental disorders, including autism. This study maps the three-dimensional distributions of 50,168 target neurons of cerebellar nuclei (CN) in wild-type and Nlgn3 R451C mutant mice. The researchers found that the Nlgn3 R451C mutation differentially affects projections from CN to the thalamus, midbrain, and brainstem. Specifically, the mutation alters the innervation power of the CN→zona incerta (ZI) pathway. Chemogenetic inhibition of a neuronal subpopulation in the ZI that receives inputs from the CN rescues social deficits in Nlgn3 R451C mice. These findings highlight the potential role of cerebellar outputs in the pathogenesis of autism and suggest new therapeutic strategies.
Key findings from the study include:
This study provides a comprehensive understanding of the structural and functional alterations in cerebellar outputs in an autism mouse model. By mapping the projections and identifying specific changes in innervation patterns, the researchers highlight the importance of the cerebellar-thalamic-midbrain circuit in autism. The chemogenetic rescue of social deficits in Nlgn3 R451C mice offers a promising new therapeutic strategy for treating autism spectrum disorders. The work entitled “ Aberrant outputs of cerebellar nuclei and targeted rescue of social deficits in an autism mouse model ” was published on Protein & Cell (published on Jul. 27, 2024).
Protein & Cell
Experimental study
Animals
Aberrant outputs of cerebellar nuclei and targeted rescue of social deficits in an autism mouse model
27-Jul-2024