Dynamic convergence of autism disorder risk genes across neurodevelopment

Author:

Fernandez Garcia MeilinORCID,Retallick-Townsley KaylaORCID,Pruitt AprilORCID,Davidson Elizabeth,Dai Yi,Fitzpatrick Sarah E.ORCID,Sen Annabel,Cohen Sophie,Livoti Olivia,Khan Suha,Dossou Grace,Cheung Jen,Deans P.J. Michael,Wang Zuoheng,Huckins LauraORCID,Hoffman Ellen,Brennand KristenORCID

Abstract

ABSTRACTOver a hundred risk genes underlie risk for autism spectrum disorder (ASD) but the extent to which they converge on shared downstream targets to increase ASD risk is unknown. To test the hypothesis that cellular context impacts the nature of convergence, here we apply a pooled CRISPR approach to target 29 ASD loss-of-function genes in human induced pluripotent stem cell (hiPSC)-derived neural progenitor cells, glutamatergic neurons, and GABAergic neurons. Two distinct approaches (gene-level and network-level analyses) demonstrate that convergence is greatest in mature glutamatergic neurons. Convergent effects are dynamic, varying in strength, composition, and biological role between cell types, increasing with functional similarity of the ASD genes examined, and driven by cell-type-specific gene co-expression patterns. Stratification of ASD genes yield targeted drug predictions capable of reversing gene-specific convergent signatures in human cells and ASD-related behaviors in zebrafish. Altogether, convergent networks downstream of ASD risk genes represent novel points of individualized therapeutic intervention.

Publisher

Cold Spring Harbor Laboratory

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