Activity-dependent regulation of synaptic clustering in a hippocampal culture system

Ege T. Kavalali, Jürgen Klingauf, Richard W. Tsien

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

Currently, there is a limited understanding of the factors that influence the localization and density of individual synapses in the central nervous system. Here we have studied the effects of activity on synapse formation between hippocampal dentate granule cells and CA3 pyramidal neurons in culture, taking advantage of FM1-43 as a fluorescent marker of synaptic boutons. We observed an early tendency for synapses to group together, quickly followed by the appearance of synaptic clusters on dendritic processes. These events were strongly influenced by N-methyl-D-aspartic acid receptor- and cyclic AMP-dependent signaling. The microstructure and localization of the synaptic clusters resembled that found in hippocampus, at mossy fiber synapses of stratum lucidum. Activity-dependent clustering of synapses represents a means for synaptic targeting that might contribute to synaptic organization in the brain.

Original languageEnglish (US)
Pages (from-to)12893-12900
Number of pages8
JournalProceedings of the National Academy of Sciences of the United States of America
Volume96
Issue number22
DOIs
StatePublished - Oct 26 1999

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Synapses
Cluster Analysis
Hippocampus
Pyramidal Cells
Presynaptic Terminals
N-Methylaspartate
Cyclic AMP
Central Nervous System
Brain

ASJC Scopus subject areas

  • Genetics
  • General

Cite this

Activity-dependent regulation of synaptic clustering in a hippocampal culture system. / Kavalali, Ege T.; Klingauf, Jürgen; Tsien, Richard W.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 96, No. 22, 26.10.1999, p. 12893-12900.

Research output: Contribution to journalArticle

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