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Related Experiment Video

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AMPA receptors in the evolving synapse: structure, function, and disease implications.

Fleming Francis1, Dewan Chettri1, Deepak Nair1

  • 1Centre for Neuroscience, Indian Institute of Science, Bengaluru, India.

Frontiers in Synaptic Neuroscience
|October 27, 2025
PubMed
Summary

Synapses are dynamic structures crucial for brain function. This review details AMPA receptors (AMPARs) in synaptic signaling, plasticity, and their link to neurological disorders.

Keywords:
AMPA receptor (AMPAR)TARPiGluRsneurodegenerationneurodegenerative diseasessynaptic plasticity

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Cell Biology

Background:

  • Synapses are now understood as dynamic, multifunctional entities essential for brain function, plasticity, and disease.
  • The tripartite synapse model includes pre-synaptic, post-synaptic, and glial components.
  • Glutamatergic transmission, mediated by AMPA receptors (AMPARs), is central to fast excitatory synaptic signaling.

Purpose of the Study:

  • To review the biology of AMPA receptors (AMPARs) within the context of synaptic organization.
  • To highlight recent advancements in understanding AMPAR function.
  • To discuss the challenges in elucidating AMPAR roles in neurological and psychiatric disorders.

Main Methods:

  • Literature review of current research on AMPA receptor biology.
  • Analysis of studies investigating synaptic organization and AMPAR regulation.
  • Examination of evidence linking AMPAR dysfunction to various diseases.

Main Results:

  • AMPA receptors (AMPARs) are tetrameric, ligand-gated ion channels critical for rapid depolarization.
  • AMPAR activity is modulated by subunit composition, trafficking, and protein interactions, underpinning learning and memory processes (e.g., long-term potentiation/depression).
  • Dysregulation of AMPARs is implicated in disorders such as autism spectrum disorders, epilepsy, schizophrenia, and Alzheimer's disease.

Conclusions:

  • AMPA receptors (AMPARs) are key players in synaptic function and plasticity.
  • Understanding AMPAR biology is crucial for addressing neurological and psychiatric disorders.
  • Further research is needed to fully elucidate AMPAR roles in health and disease.