Essays on Science and SocietyNeurobiology

Outside-in: Rethinking the etiology of autism spectrum disorders

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Science  04 Oct 2019:
Vol. 366, Issue 6461, pp. 45-46
DOI: 10.1126/science.aaz3880

Summary

Autism spectrum disorders (ASDs) are thought to arise exclusively from aberrant brain function. Our research proposes a surprising revision of this view. We have discovered that peripheral sensory neurons—neurons outside the brain—are key sites at which ASD-related gene mutations have a critical impact. Dysfunction of peripheral neurons in mouse models disrupts central nervous system development and causes ASD-related phenotypes, including sensory overreactivity, social impairments, and anxiety-like behaviors. These unexpected findings have led us to propose and demonstrate that peripheral neurons are a tractable and effective therapeutic target to improve some ASD-related behaviors.

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