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Related Concept Videos

Autism Spectrum Disorder01:19

Autism Spectrum Disorder

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Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
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Dynamic Clamp Methods to Investigate Impaired Neuronal Excitability Associated with Autism
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DE NOVO MUTATIONS IN AUTISM IMPLICATE THE SYNAPTIC ELIMINATION NETWORK.

Guhan Ram Venkataraman1, Chloe O'Connell, Fumiko Egawa

  • 1Department of Bioengineering, Stanford University, 318 Campus Drive Stanford, CA 94305, USA, guhan@stanford.edu.

Pacific Symposium on Biocomputing. Pacific Symposium on Biocomputing
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Summary

Genetic mutations, known as de novo variants, are linked to autism risk by affecting synaptic pruning. These findings offer insights into autism causes and potential treatments.

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Area of Science:

  • Genetics
  • Neuroscience
  • Developmental Biology

Background:

  • Autism Spectrum Disorder (ASD) has a significant genetic component, with both inherited and de novo (new) mutations contributing to risk.
  • While familial inheritance is well-documented, the role of spontaneous genetic changes in autism etiology requires further investigation.

Purpose of the Study:

  • To investigate the association between de novo variants in autism and specific biological pathways.
  • To identify potential genetic targets related to synaptic function in autism.

Main Methods:

  • Systematic literature review of validated autism de novo variants.
  • Bioinformatic analysis to identify enriched gene sets.
  • Examination of protein-protein interaction networks for key genes.

Main Results:

  • Autism-associated de novo variants were significantly enriched in a gene set involved in synaptic elimination.
  • Several key genes within this set (e.g., CACNA1C, SHANK2, SYNGAP1, NLGN3, NRXN1, PTEN) are known autism risk genes and participate in protein-protein interactions.
  • These findings link de novo variants to critical processes of synaptic pruning and density regulation.

Conclusions:

  • De novo variants implicated in autism are associated with the biological pathway of synaptic elimination.
  • This suggests that disruptions in synaptic pruning and density may be a core mechanism in autism pathophysiology.
  • The identified genes and pathways provide potential targets for future therapeutic interventions for autism.