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Cell and Tissue Research

, Volume 326, Issue 2, pp 239–248 | Cite as

Structure and function of gap junctions in the developing brain

  • Roberto Bruzzone
  • Rolf Dermietzel
Review

Abstract

Gap-junction-dependent neuronal communication is widespread in the developing brain, and the prevalence of gap-junctional coupling is well correlated with specific developmental events. We summarize here our current knowledge of the contribution of gap junctions to brain development and propose that they carry out this role by taking advantage of the full complement of their functional properties. Thus, hemichannel activation may represent a key step in the initiation of Ca2+ waves that coordinate cell cycle events during early prenatal neurogenesis, whereas both hemichannels and/or gap junctions may control the division and migration of cohorts of precusor cells during late prenatal neurogenesis. Finally, the recent discovery that pannexins, a novel group of proteins prominently expressed in the brain, are able to form both hemichannels and gap-junction channels suggests that we need to seek more than just connexins with respect to these junctions.

Keywords

Gap junction Brain development Prenatal neurogenesis Pannexins Hemichannels 

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© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Department of NeuroscienceInstitut PasteurParisFrance
  2. 2.Department of Neuroanatomy and Molecular Brain ResearchRuhr University at BochumBochumGermany

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