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Related Experiment Video

Updated: Apr 4, 2026

Use of Primary Cultured Hippocampal Neurons to Study the Assembly of Axon Initial Segments

Use of Primary Cultured Hippocampal Neurons to Study the Assembly of Axon Initial Segments

Published on: February 12, 2021

Axon Initial Segment: Structure, Biological Functions, Diseases, and Therapeutic Targets.

Dong-Yan Song¹, Lin Yuan¹, Weiguo Yang²

¹Laboratory of Research in Parkinson's Disease and Related Disorders Health Sciences Institute Key Laboratory of Major Chronic Diseases of Nervous System of Liaoning Province China Medical University Shenyang China.

|April 3, 2026

Summary

The axon initial segment (AIS), crucial for neuronal function, dynamically regulates brain activity and is implicated in neurological disorders. Understanding AIS plasticity offers new therapeutic avenues for brain diseases.

Keywords:

action potential axon initial segment neural circuit neurological disorders plasticity

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Area of Science:

Neuroscience
Cell Biology

Background:

The axon initial segment (AIS) is a critical neuronal compartment acting as a diffusion barrier.
It plays a vital role in regulating neuronal excitability and maintaining circuit homeostasis.
Recent advancements have highlighted the AIS's involvement in neurodevelopment and neurodegenerative diseases.

Purpose of the Study:

To systematically review the molecular architecture and plasticity of the AIS.
To discuss the AIS's biological functions and its role in neurological disorders.
To explore future therapeutic strategies targeting the AIS.

Main Methods:

Systematic review of existing literature.
Analysis of super-resolution imaging and disease modeling studies.
Integration of physiological and pathological data.

Main Results:

Detailed outline of the AIS molecular composition, including scaffolds and ion channels.
Discussion of AIS plasticity mechanisms and its impact on neuronal functions like action potential initiation.
Evidence linking AIS disruption to early pathology in neurodegenerative and neuropsychiatric disorders.

Conclusions:

AIS disruption is an early event in neurological diseases.
Targeting AIS presents potential for novel therapies.
Further research into AIS mechanisms is crucial for advancing neurological disease diagnosis and treatment.