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Citation

  • Authors: Leshchyns'ka, I., Sytnyk, V., Richter, M., Andreyeva, A., Puchkov, D., Schachner, M.
  • Year: 2006
  • Journal: Neuron 52 1011-25
  • Applications: in vitro / Protein/Peptide/Antibody / PULSin
  • Cell type: Mouse primary hippocampal neurons
    Description: Mouse hippocampal neurons

Abstract

In searching for binding partners of the intracellular domain of the immunoglobulin superfamily adhesion molecule CHL1, we identified the clathrin-uncoating ATPase Hsc70. CHL1 gene ablation resulted in reduced targeting of Hsc70 to the synaptic plasma membrane and synaptic vesicles, suggesting CHL1 as a synapse-targeting cue for Hsc70. CHL1 accumulates in presynaptic membranes and, in response to synapse activation, is targeted to synaptic vesicles by endocytosis. CHL1 deficiency or disruption of the CHL1/Hsc70 complex results in accumulation of abnormally high levels of clathrin-coated synaptic vesicles with a reduced ability to release clathrin. Generation of new clathrin-coated synaptic vesicles in an activity-dependent manner is inhibited when the CHL1/Hsc70 complex is disrupted, resulting in impaired uptake and release of FM dyes in synaptic boutons. Abnormalities in clathrin-dependent synaptic vesicle recycling may thus underlie brain malfunctions in humans and mice that carry mutations in the CHL1 gene.

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