Synapse adhesion: a dynamic equilibrium conferring stability and flexibility.

Deanna L Benson, George W Huntley
Author Information
  1. Deanna L Benson: Department of Neuroscience and the Friedman Brain Institute, Mount Sinai School of Medicine, New York, NY 10029, United States. Deanna.Benson@mssm.edu

Abstract

Cell adhesion molecules (CAMs) linked to cytoskeleton generate stable cell-cell junctions. Cadherins provide a canonical example, but paradoxically, they participate in a multitude of transient and regulatable interactions. Their extracellular binding generates weak adhesion that is modified by clustering; interactions with F-actin are regulated, can be transient, and can alter F-actin dynamics. Additionally, cadherin recycling from the cell surface can modify the size and location of junctions and strength of adhesion. In epithelial cells, this ongoing dynamic behavior is important for maintaining stable junctions. Recent work supports that cadherins act similarly at synapses where their actions are likely to be shared by integrins and other actin-linked CAMs. Together the collaborative activities of such CAMs provide a stable, but flexible structure that can promote and support changes in synapse shape and size while maintaining stable junctions to permit information flow.

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Grants

  1. R01 MH095229/NIMH NIH HHS
  2. R01 NS037731/NINDS NIH HHS
  3. R21 MH099778/NIMH NIH HHS
  4. R01 MH075783/NIMH NIH HHS
  5. NS037731/NINDS NIH HHS
  6. MH075783/NIMH NIH HHS

MeSH Term

Animals
Cell Adhesion
Cell Adhesion Molecules
Cytoskeleton
Intercellular Junctions
Models, Biological
Nonlinear Dynamics
Synapses

Chemicals

Cell Adhesion Molecules