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Related Experiment Video

Updated: May 27, 2026

Analysis of Dendritic Spine Morphology in Cultured CNS Neurons
11:48

Analysis of Dendritic Spine Morphology in Cultured CNS Neurons

Published on: July 13, 2011

Dendritic spine formation and synaptic function require neurobeachin.

Katharina Niesmann1, Dorothee Breuer, Johannes Brockhaus

  • 1Department of Anatomy and Molecular Neurobiology, Westfälische Wilhelms-University, Münster 48149, Germany.

Nature Communications
|November 24, 2011
PubMed
Summary
This summary is machine-generated.

Neurobeachin (Nbea) is crucial for forming excitatory synapses on dendritic spines. Its absence disrupts synapse development and actin organization, impacting brain plasticity and potentially contributing to neurological disorders.

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Last Updated: May 27, 2026

Analysis of Dendritic Spine Morphology in Cultured CNS Neurons
11:48

Analysis of Dendritic Spine Morphology in Cultured CNS Neurons

Published on: July 13, 2011

Dendritic Spine Quantification Using an Automatic Three-Dimensional Neuron Reconstruction Software
07:45

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Published on: September 27, 2024

3D Modeling of Dendritic Spines with Synaptic Plasticity
07:13

3D Modeling of Dendritic Spines with Synaptic Plasticity

Published on: May 18, 2020

Area of Science:

  • Neuroscience
  • Cell Biology
  • Synaptic Plasticity

Background:

  • Synapse formation is critical for brain function and plasticity.
  • Dendritic spines, actin-rich protrusions, are the primary sites of excitatory synapses.
  • Altered spine morphology is linked to various neurological and mental illnesses.

Purpose of the Study:

  • To investigate the role of neurobeachin (Nbea) in synaptogenesis and spine formation.
  • To understand Nbea's contribution to the development and maintenance of excitatory synapses.

Main Methods:

  • Utilized complete knockout (KO) and heterozygous mouse models.
  • Cultured neurons from Nbea mutant and wild-type mice.
  • Analyzed synapse number, location, and associated protein/actin enrichment.
  • Measured miniature postsynaptic currents.

Main Results:

  • Nbea deletion significantly reduced the number of spinous synapses in cultured neurons and mouse cortical tissue.
  • Excitatory synapses in Nbea mutants predominantly formed on dendritic shafts, not spine heads.
  • Synaptic actin enrichment was reduced, and actin/synaptopodin accumulated ectopically near the Golgi apparatus in mutant neurons.
  • Altered miniature postsynaptic currents were observed in Nbea mutants.

Conclusions:

  • Neurobeachin (Nbea) plays a vital role in the proper formation and localization of excitatory synapses on dendritic spines.
  • Nbea is essential for maintaining synaptic actin organization and potentially for trafficking key proteins to synaptic sites.
  • Disruption of Nbea function impacts synaptic structure and function, offering insights into neurological disorders associated with spine pathologies.