Journal
FEBS LETTERS
Volume 588, Issue 8, Pages 1186-1192Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.febslet.2014.01.001
Keywords
Connexin; Gap junction; Hemichannel; Independent function
Funding
- National Institutes of Health [EY012085]
- Welch Foundation [AQ-1507]
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Connexins, a family of transmembrane proteins, are components of both gap junction channels and hemichannels, which mediate the exchange of ions and small molecules between adjacent cells, and between the inside and outside of the cell, respectively. Substantial advancements have been made in the comprehension of the role of gap junctions and hemichannels in coordinating cellular events. In recent years, a plethora of studies demonstrate a role of connexin proteins in the regulation of tissue homeostasis that occurs independently of their channel activities. This is shown in the context of cell growth, adhesion, migration, apoptosis, and signaling. The major mechanisms of these channel-independent activities still remain to be discovered. In this review, we provide an updated overview on the current knowledge of gap junction- and hemichannel-independent functions of connexins, in particular, their effects on tumorigenesis, neurogenesis and disease development. (c) 2014 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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