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Related Experiment Video

Updated: Oct 26, 2025

Evaluation of Synapse Density in Hippocampal Rodent Brain Slices
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Nanoscale synapse organization and dysfunction in neurodevelopmental disorders.

Hanna L Zieger1, Daniel Choquet2

  • 1Univ. Bordeaux, CNRS, Interdisciplinary Institute for Neuroscience, IINS, UMR 5297, F-33000 Bordeaux, France.

Neurobiology of Disease
|July 27, 2021
PubMed
Summary

Genetic defects in synaptic proteins may cause neurodevelopmental disorders by disrupting the nanoscale organization and dynamics of synapses. Super-resolution imaging offers a way to study these disruptions and understand brain function, learning, and memory.

Keywords:
Autism spectrum disorderIntellectual disabilitiesNeurodevelopmental diseasesReceptor traffickingSynapse nanoscale organizationSynaptic plasticity

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Neurodevelopmental disorders, including intellectual disabilities and autism spectrum disorder, are often linked to genetic defects affecting synaptic proteins.
  • Synapse dysfunction from single gene mutations falls into categories of transcriptional regulation, signaling, or scaffolding/structural defects.

Purpose of the Study:

  • To explore how genetic defects impact the nanoscale organization and dynamics of synaptic components in neurodevelopmental disorders.
  • To discuss the application of super-resolution imaging in modeling these disorders.

Main Methods:

  • Utilizing super-resolution imaging technologies to visualize synaptic components at the nanoscale.
  • Analyzing the organization and dynamics of synaptic nanodomains, receptors, ion channels, and scaffolding elements.
  • Investigating the interplay between synaptic organization, component dynamics, and synaptic plasticity.

Main Results:

  • Super-resolution imaging reveals complex nanoscale organization within synapses, with specific nanodomains housing key proteins.
  • Synaptic components exhibit high dynamism, exchanging between domains and cellular compartments.
  • Precise nanoscale organization and high dynamics are crucial for regulating synaptic function, plasticity, learning, and memory.

Conclusions:

  • Genetic defects targeting synaptic scaffolds and structures may impair brain function by disrupting nanoscale synaptic organization and dynamics.
  • Super-resolution imaging in models of neurodevelopmental disorders is a promising approach to investigate these mechanisms.