Abstract:
:The liver was among the first organs in which connexin proteins have been identified. Hepatocytes harbor connexin32 and connexin26, while non-parenchymal liver cells typically express connexin43. Connexins give rise to hemichannels, which dock with counterparts on adjacent cells to form gap junctions. Both hemichannels and gap junctions provide pathways for communication, via paracrine signaling or direct intercellular coupling, respectively. Over the years, hepatocellular gap junctions have been shown to regulate a number of liver-specific functions and to drive liver cell growth. In the last few years, it has become clear that connexin hemichannels are involved in liver cell death, particularly in hepatocyte apoptosis. This also holds true for hemichannels composed of pannexin1, a connexin-like protein recently identified in the liver. Moreover, pannexin1 hemichannels are key players in the regulation of hepatic inflammatory processes. The current paper provides a concise overview of the features of connexins, pannexins and their channels in the liver.
journal_name
Front Physioljournal_title
Frontiers in physiologyauthors
Maes M,Decrock E,Cogliati B,Oliveira AG,Marques PE,Dagli ML,Menezes GB,Mennecier G,Leybaert L,Vanhaecke T,Rogiers V,Vinken Mdoi
10.3389/fphys.2013.00405subject
Has Abstractpub_date
2014-01-10 00:00:00pages
405issn
1664-042Xjournal_volume
4pub_type
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