Cell Death Induction and Protection by Activation of Ubiquitously Expressed Anion/Cation Channels. Part 1: Roles of VSOR/VRAC in Cell Volume Regulation, Release of Double-Edged Signals and Apoptotic/Necrotic Cell Death

Cell volume regulation (CVR) is essential for survival and functions of animal cells. Actually, normotonic cell shrinkage and swelling are coupled to apoptotic and necrotic cell death and thus called the apoptotic volume decrease (AVD) and the necrotic volume increase (NVI), respectively. A number o...

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Main Authors: Yasunobu Okada, Ravshan Z. Sabirov, Kaori Sato-Numata, Tomohiro Numata
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-01-01
Series:Frontiers in Cell and Developmental Biology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fcell.2020.614040/full
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author Yasunobu Okada
Yasunobu Okada
Yasunobu Okada
Ravshan Z. Sabirov
Kaori Sato-Numata
Kaori Sato-Numata
Tomohiro Numata
author_facet Yasunobu Okada
Yasunobu Okada
Yasunobu Okada
Ravshan Z. Sabirov
Kaori Sato-Numata
Kaori Sato-Numata
Tomohiro Numata
author_sort Yasunobu Okada
collection DOAJ
description Cell volume regulation (CVR) is essential for survival and functions of animal cells. Actually, normotonic cell shrinkage and swelling are coupled to apoptotic and necrotic cell death and thus called the apoptotic volume decrease (AVD) and the necrotic volume increase (NVI), respectively. A number of ubiquitously expressed anion and cation channels are involved not only in CVD but also in cell death induction. This series of review articles address the question how cell death is induced or protected with using ubiquitously expressed ion channels such as swelling-activated anion channels, acid-activated anion channels and several types of TRP cation channels including TRPM2 and TRPM7. The Part 1 focuses on the roles of the volume-sensitive outwardly rectifying anion channels (VSOR), also called the volume-regulated anion channel (VRAC), which is activated by cell swelling or reactive oxygen species (ROS) in a manner dependent on intracellular ATP. First we describe phenotypical properties, the molecular identity, and physical pore dimensions of VSOR/VRAC. Second, we highlight the roles of VSOR/VRAC in the release of organic signaling molecules, such as glutamate, glutathione, ATP and cGAMP, that play roles as double-edged swords in cell survival. Third, we discuss how VSOR/VRAC is involved in CVR and cell volume dysregulation as well as in the induction of or protection from apoptosis, necrosis and regulated necrosis under pathophysiological conditions.
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spelling doaj.art-ca529f3f841c435197acaaa53dd0fd542022-12-21T22:42:34ZengFrontiers Media S.A.Frontiers in Cell and Developmental Biology2296-634X2021-01-01810.3389/fcell.2020.614040614040Cell Death Induction and Protection by Activation of Ubiquitously Expressed Anion/Cation Channels. Part 1: Roles of VSOR/VRAC in Cell Volume Regulation, Release of Double-Edged Signals and Apoptotic/Necrotic Cell DeathYasunobu Okada0Yasunobu Okada1Yasunobu Okada2Ravshan Z. Sabirov3Kaori Sato-Numata4Kaori Sato-Numata5Tomohiro Numata6National Institute for Physiological Sciences, Okazaki, JapanDepartment of Physiology, School of Medicine, Aichi Medical University, Nagakute, JapanDepartment of Physiology, Kyoto Prefectural University of Medicine, Kyoto, JapanLaboratory of Molecular Physiology, Institute of Biophysics and Biochemistry, National University of Uzbekistan, Tashkent, UzbekistanJapan Society for the Promotion of Science, Tokyo, JapanDepartment of Physiology, School of Medicine, Fukuoka University, Fukuoka, JapanDepartment of Physiology, School of Medicine, Fukuoka University, Fukuoka, JapanCell volume regulation (CVR) is essential for survival and functions of animal cells. Actually, normotonic cell shrinkage and swelling are coupled to apoptotic and necrotic cell death and thus called the apoptotic volume decrease (AVD) and the necrotic volume increase (NVI), respectively. A number of ubiquitously expressed anion and cation channels are involved not only in CVD but also in cell death induction. This series of review articles address the question how cell death is induced or protected with using ubiquitously expressed ion channels such as swelling-activated anion channels, acid-activated anion channels and several types of TRP cation channels including TRPM2 and TRPM7. The Part 1 focuses on the roles of the volume-sensitive outwardly rectifying anion channels (VSOR), also called the volume-regulated anion channel (VRAC), which is activated by cell swelling or reactive oxygen species (ROS) in a manner dependent on intracellular ATP. First we describe phenotypical properties, the molecular identity, and physical pore dimensions of VSOR/VRAC. Second, we highlight the roles of VSOR/VRAC in the release of organic signaling molecules, such as glutamate, glutathione, ATP and cGAMP, that play roles as double-edged swords in cell survival. Third, we discuss how VSOR/VRAC is involved in CVR and cell volume dysregulation as well as in the induction of or protection from apoptosis, necrosis and regulated necrosis under pathophysiological conditions.https://www.frontiersin.org/articles/10.3389/fcell.2020.614040/fullcell volume regulationapoptotic cell deathnecrotic cell deathVSOR/VRACglutamate releaseGSH release
spellingShingle Yasunobu Okada
Yasunobu Okada
Yasunobu Okada
Ravshan Z. Sabirov
Kaori Sato-Numata
Kaori Sato-Numata
Tomohiro Numata
Cell Death Induction and Protection by Activation of Ubiquitously Expressed Anion/Cation Channels. Part 1: Roles of VSOR/VRAC in Cell Volume Regulation, Release of Double-Edged Signals and Apoptotic/Necrotic Cell Death
Frontiers in Cell and Developmental Biology
cell volume regulation
apoptotic cell death
necrotic cell death
VSOR/VRAC
glutamate release
GSH release
title Cell Death Induction and Protection by Activation of Ubiquitously Expressed Anion/Cation Channels. Part 1: Roles of VSOR/VRAC in Cell Volume Regulation, Release of Double-Edged Signals and Apoptotic/Necrotic Cell Death
title_full Cell Death Induction and Protection by Activation of Ubiquitously Expressed Anion/Cation Channels. Part 1: Roles of VSOR/VRAC in Cell Volume Regulation, Release of Double-Edged Signals and Apoptotic/Necrotic Cell Death
title_fullStr Cell Death Induction and Protection by Activation of Ubiquitously Expressed Anion/Cation Channels. Part 1: Roles of VSOR/VRAC in Cell Volume Regulation, Release of Double-Edged Signals and Apoptotic/Necrotic Cell Death
title_full_unstemmed Cell Death Induction and Protection by Activation of Ubiquitously Expressed Anion/Cation Channels. Part 1: Roles of VSOR/VRAC in Cell Volume Regulation, Release of Double-Edged Signals and Apoptotic/Necrotic Cell Death
title_short Cell Death Induction and Protection by Activation of Ubiquitously Expressed Anion/Cation Channels. Part 1: Roles of VSOR/VRAC in Cell Volume Regulation, Release of Double-Edged Signals and Apoptotic/Necrotic Cell Death
title_sort cell death induction and protection by activation of ubiquitously expressed anion cation channels part 1 roles of vsor vrac in cell volume regulation release of double edged signals and apoptotic necrotic cell death
topic cell volume regulation
apoptotic cell death
necrotic cell death
VSOR/VRAC
glutamate release
GSH release
url https://www.frontiersin.org/articles/10.3389/fcell.2020.614040/full
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