Journal
BIOMOLECULES
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/biom10121654
Keywords
connexins; cancer; gap junctions; cancer stem cells; hemichannels
Categories
Funding
- NIH [R01NS089641]
- U.S. Department of Defense [BC181468]
- Velosano bike race
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The expression, localization, and function of connexins, the protein subunits that comprise gap junctions, are often altered in cancer. In addition to cell-cell coupling through gap junction channels, connexins also form hemichannels that allow communication between the cell and the extracellular space and perform non-junctional intracellular activities. Historically, connexins have been considered tumor suppressors; however, they can also serve tumor-promoting functions in some contexts. Here, we review the literature surrounding connexins in cancer cells in terms of specific connexin functions and propose that connexins function upstream of most, if not all, of the hallmarks of cancer. The development of advanced connexin targeting approaches remains an opportunity for the field to further interrogate the role of connexins in cancer phenotypes, particularly through the use of in vivo models. More specific modulators of connexin function will both help elucidate the functions of connexins in cancer and advance connexin-specific therapies in the clinic.
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