Journal
DEVELOPMENTAL NEUROSCIENCE
Volume 43, Issue 3-4, Pages 168-180Publisher
KARGER
DOI: 10.1159/000515264
Keywords
Interneurons; Vasoactive intestinal peptide; Autism; Epilepsy
Categories
Funding
- NIH NINDS [F31 NS111803, K08 NS097633, R01 NS110869]
- Career Award for Medical Scientists from the Burroughs Wellcome Fund
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VIP-INs in the cerebral cortex play a crucial role in regulating network dynamics and normal circuit development, with implications in sensory input, development, and behavior. Underexplored disease-associated genes highly expressed in VIP-INs may broadly implicate them in autism spectrum disorder and intellectual disability. Further cell type-specific investigations and targeted therapeutics are discussed in the context of genomic diagnosis.
GABAergic inhibitory interneurons of the cerebral cortex expressing vasoactive intestinal peptide (VIP-INs) are rapidly emerging as important regulators of network dynamics and normal circuit development. Several recent studies have also identified VIP-IN dysfunction in models of genetically determined neurodevelopmental disorders (NDDs). In this article, we review the known circuit functions of VIP-INs and how they may relate to accumulating evidence implicating VIP-INs in the mechanisms of prominent NDDs. We highlight recurring VIP-IN-mediated circuit motifs that are shared across cerebral cortical areas and how VIP-IN activity can shape sensory input, development, and behavior. Ultimately, we extract a set of themes that inform our understanding of how VIP-INs influence pathogenesis of NDDs. Using publicly available single-cell RNA sequencing data from the Allen Institute, we also identify several underexplored disease-associated genes that are highly expressed in VIP-INs. We survey these genes and their shared related disease phenotypes that may broadly implicate VIP-INs in autism spectrum disorder and intellectual disability rather than epileptic encephalopathy. Finally, we conclude with a discussion of the relevance of cell type-specific investigations and therapeutics in the age of genomic diagnosis and targeted therapeutics.
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