PMID- 28174541 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 1664-042X (Print) IS - 1664-042X (Electronic) IS - 1664-042X (Linking) VI - 8 DP - 2017 TI - Regulation of Connexin-Based Channels by Fatty Acids. PG - 11 LID - 10.3389/fphys.2017.00011 [doi] LID - 11 AB - In this mini-review, we briefly summarize the current knowledge about the effects of fatty acids (FAs) on connexin-based channels, as well as discuss the limited information about the impact FAs may have on pannexins (Panxs). FAs regulate diverse cellular functions, some of which are explained by changes in the activity of channels constituted by connexins (Cxs) or Panxs, which are known to play critical roles in maintaining the functional integrity of diverse organs and tissues. Cxs are transmembrane proteins that oligomerize into hexamers to form hemichannels (HCs), which in turn can assemble into dodecamers to form gap junction channels (GJCs). While GJCs communicate the cytoplasm of contacting cells, HCs serve as pathways for the exchange of ions and small molecules between the intra and extracellular milieu. Panxs, as well as Cx HCs, form channels at the plasma membrane that enable the interchange of molecules between the intra and extracellular spaces. Both Cx- and Panx-based channels are controlled by several post-translational modifications. However, the mechanism of action of FAs on these channels has not been described in detail. It has been shown however that FAs frequently decrease GJC-mediated cell-cell communication. The opposite effect also has been described for HC or Panx-dependent intercellular communication, where, the acute FA effect can be reversed upon washout. Additionally, changes in GJCs mediated by FAs have been associated with post-translational modifications (e.g., phosphorylation), and seem to be directly related to chemical properties of FAs (e.g., length of carbon chain and/or degree of saturation), but this possible link remains poorly understood. FAU - Puebla, Carlos AU - Puebla C AD - Instituto de Ciencias Biomedicas, Facultad de Ciencias de la Salud, Universidad Autonoma de ChileSantiago, Chile; Centro de Fisiologia Celular e Integrativa, Facultad de Medicina, Clinica Alemana Universidad del DesarrolloSantiago, Chile. FAU - Retamal, Mauricio A AU - Retamal MA AD - Centro de Fisiologia Celular e Integrativa, Facultad de Medicina, Clinica Alemana Universidad del Desarrollo Santiago, Chile. FAU - Acuna, Rodrigo AU - Acuna R AD - Centro de Fisiologia Celular e Integrativa, Facultad de Medicina, Clinica Alemana Universidad del Desarrollo Santiago, Chile. FAU - Saez, Juan C AU - Saez JC AD - Departamento de Fisiologia, Facultad de Ciencias Biologicas, Pontificia Universidad Catolica de ChileSantiago, Chile; Centro Interdisciplinario de Neurociencias de Valparaiso, Intituto Milenio, Universidad de ValparaisoValparaiso, Chile. LA - eng PT - Journal Article PT - Review DEP - 20170124 PL - Switzerland TA - Front Physiol JT - Frontiers in physiology JID - 101549006 PMC - PMC5258758 OTO - NOTNLM OT - G-protein coupled receptor OT - connexon OT - gap junction channel OT - hemichannel OT - pannexon EDAT- 2017/02/09 06:00 MHDA- 2017/02/09 06:01 PMCR- 2017/01/24 CRDT- 2017/02/09 06:00 PHST- 2016/11/25 00:00 [received] PHST- 2017/01/06 00:00 [accepted] PHST- 2017/02/09 06:00 [entrez] PHST- 2017/02/09 06:00 [pubmed] PHST- 2017/02/09 06:01 [medline] PHST- 2017/01/24 00:00 [pmc-release] AID - 10.3389/fphys.2017.00011 [doi] PST - epublish SO - Front Physiol. 2017 Jan 24;8:11. doi: 10.3389/fphys.2017.00011. eCollection 2017.