Genetic disruption of WASHC4 drives endo-lysosomal dysfunction and cognitive-movement impairments in mice and humans.

ABSTRACT: Mutation of the Wiskott-Aldrich syndrome protein and SCAR homology (WASH) complex subunit, SWIP, is implicated in human intellectual disability, but the cellular etiology of this association is unknown. We identify the neuronal WASH complex proteome, revealing a network of endosomal proteins. To uncover how dysfunction of endosomal SWIP leads to disease, we generate a mouse model of the human WASHC4^c.3056C>G mutation. Quantitative spatial proteomics analysis of SWIP^P1019R mouse brain reveals that this mutation destabilizes the WASH complex and uncovers significant perturbations in both endosomal and lysosomal pathways. Cellular and histological analyses confirm that SWIP^P1019R results in endo-lysosomal disruption and uncover indicators of neurodegene

SUBMITTER: Courtland JL 

PROVIDER: S-EPMC7984842 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature