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Dynamic Clamp Methods to Investigate Impaired Neuronal Excitability Associated with Autism
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Convergent synaptic and circuit substrates underlying autism genetic risks.

Aaron McGee1, Guohui Li2, Zhongming Lu3

  • 1Developmental Neuroscience Program, Saban Research Institute, Children's Hospital Los Angeles, Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA.

Frontiers in Biology
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Summary
This summary is machine-generated.

Autism spectrum disorder (ASD) genetic risk factors impact brain development by disrupting synaptic and circuit assembly. Mouse models reveal these disruptions are key to understanding ASD pathophysiology and developing targeted interventions.

Keywords:
autism spectrum disordersbehaviorcircuitsdevelopmentneurodevelopmental disordersrisk genessynapse

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Area of Science:

  • Neuroscience
  • Genetics
  • Developmental Biology

Background:

  • Autism spectrum disorder (ASD) diagnoses have increased, with numerous genetic risk factors identified.
  • Understanding how these genetic factors contribute to ASD pathogenesis remains a challenge.
  • Aberrant neurodevelopment, including neuronal production, connectivity, and network balance, characterizes ASD.

Purpose of the Study:

  • To review synaptic and circuit abnormalities in mouse models of ASD.
  • To explore how genetic risk factors influence neurodevelopmental trajectories in ASD.
  • To identify unifying mechanisms underlying ASD pathophysiology.

Main Methods:

  • Analysis of prevalent mouse models for syndromic forms of ASD caused by single gene perturbations.
  • Examination of synaptic and circuit alterations in these models.
  • Review of studies interrogating the biological role of ASD risk genes.

Main Results:

  • Mouse models reveal that ASD risk genes disrupt signaling pathways crucial for synaptic and circuit homeostasis.
  • Synaptic and circuit assembly mechanisms offer a unifying explanation for ASD-related changes.
  • Perturbations in synaptic function are central, though not the sole, alterations in ASD.

Conclusions:

  • ASD risk genes play a fundamental role in maintaining synaptic and circuit balance during brain development.
  • Understanding these mechanisms in mouse models is vital for deciphering ASD.
  • Targeting synaptic and circuit dysfunction may offer therapeutic avenues for ASD.