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Murine K(2P)5.1 Deficiency Has No Impact on Autoimmune Neuroinflammation due to Compensatory K(2P)3.1- and K(V)1.3-Dependent Mechanisms

Lymphocytes express potassium channels that regulate physiological cell functions, such as activation, proliferation and migration. Expression levels of K(2P)5.1 (TASK2; KCNK5) channels belonging to the family of two-pore domain potassium channels have previously been correlated to the activity of a...

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Autores principales: Bittner, Stefan, Bobak, Nicole, Hofmann, Majella-Sophie, Schuhmann, Michael K., Ruck, Tobias, Göbel, Kerstin, Brück, Wolfgang, Wiendl, Heinz, Meuth, Sven G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4581175/
https://www.ncbi.nlm.nih.gov/pubmed/26213925
http://dx.doi.org/10.3390/ijms160816880
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author Bittner, Stefan
Bobak, Nicole
Hofmann, Majella-Sophie
Schuhmann, Michael K.
Ruck, Tobias
Göbel, Kerstin
Brück, Wolfgang
Wiendl, Heinz
Meuth, Sven G.
author_facet Bittner, Stefan
Bobak, Nicole
Hofmann, Majella-Sophie
Schuhmann, Michael K.
Ruck, Tobias
Göbel, Kerstin
Brück, Wolfgang
Wiendl, Heinz
Meuth, Sven G.
author_sort Bittner, Stefan
collection PubMed
description Lymphocytes express potassium channels that regulate physiological cell functions, such as activation, proliferation and migration. Expression levels of K(2P)5.1 (TASK2; KCNK5) channels belonging to the family of two-pore domain potassium channels have previously been correlated to the activity of autoreactive T lymphocytes in patients with multiple sclerosis and rheumatoid arthritis. In humans, K(2P)5.1 channels are upregulated upon T cell stimulation and influence T cell effector functions. However, a further clinical translation of targeting K(2P)5.1 is currently hampered by a lack of highly selective inhibitors, making it necessary to evaluate the impact of KCNK5 in established preclinical animal disease models. We here demonstrate that K(2P)5.1 knockout (K(2P)5.1(−)(/−)) mice display no significant alterations concerning T cell cytokine production, proliferation rates, surface marker molecules or signaling pathways. In an experimental model of autoimmune neuroinflammation, K(2P)5.1(−)(/−) mice show a comparable disease course to wild-type animals and no major changes in the peripheral immune system or CNS compartment. A compensatory upregulation of the potassium channels K(2P)3.1 and K(V)1.3 seems to counterbalance the deletion of K(2P)5.1. As an alternative model mimicking autoimmune neuroinflammation, experimental autoimmune encephalomyelitis in the common marmoset has been proposed, especially for testing the efficacy of new potential drugs. Initial experiments show that K(2P)5.1 is functionally expressed on marmoset T lymphocytes, opening up the possibility for assessing future K(2P)5.1-targeting drugs.
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spelling pubmed-45811752015-09-28 Murine K(2P)5.1 Deficiency Has No Impact on Autoimmune Neuroinflammation due to Compensatory K(2P)3.1- and K(V)1.3-Dependent Mechanisms Bittner, Stefan Bobak, Nicole Hofmann, Majella-Sophie Schuhmann, Michael K. Ruck, Tobias Göbel, Kerstin Brück, Wolfgang Wiendl, Heinz Meuth, Sven G. Int J Mol Sci Article Lymphocytes express potassium channels that regulate physiological cell functions, such as activation, proliferation and migration. Expression levels of K(2P)5.1 (TASK2; KCNK5) channels belonging to the family of two-pore domain potassium channels have previously been correlated to the activity of autoreactive T lymphocytes in patients with multiple sclerosis and rheumatoid arthritis. In humans, K(2P)5.1 channels are upregulated upon T cell stimulation and influence T cell effector functions. However, a further clinical translation of targeting K(2P)5.1 is currently hampered by a lack of highly selective inhibitors, making it necessary to evaluate the impact of KCNK5 in established preclinical animal disease models. We here demonstrate that K(2P)5.1 knockout (K(2P)5.1(−)(/−)) mice display no significant alterations concerning T cell cytokine production, proliferation rates, surface marker molecules or signaling pathways. In an experimental model of autoimmune neuroinflammation, K(2P)5.1(−)(/−) mice show a comparable disease course to wild-type animals and no major changes in the peripheral immune system or CNS compartment. A compensatory upregulation of the potassium channels K(2P)3.1 and K(V)1.3 seems to counterbalance the deletion of K(2P)5.1. As an alternative model mimicking autoimmune neuroinflammation, experimental autoimmune encephalomyelitis in the common marmoset has been proposed, especially for testing the efficacy of new potential drugs. Initial experiments show that K(2P)5.1 is functionally expressed on marmoset T lymphocytes, opening up the possibility for assessing future K(2P)5.1-targeting drugs. MDPI 2015-07-24 /pmc/articles/PMC4581175/ /pubmed/26213925 http://dx.doi.org/10.3390/ijms160816880 Text en © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bittner, Stefan
Bobak, Nicole
Hofmann, Majella-Sophie
Schuhmann, Michael K.
Ruck, Tobias
Göbel, Kerstin
Brück, Wolfgang
Wiendl, Heinz
Meuth, Sven G.
Murine K(2P)5.1 Deficiency Has No Impact on Autoimmune Neuroinflammation due to Compensatory K(2P)3.1- and K(V)1.3-Dependent Mechanisms
title Murine K(2P)5.1 Deficiency Has No Impact on Autoimmune Neuroinflammation due to Compensatory K(2P)3.1- and K(V)1.3-Dependent Mechanisms
title_full Murine K(2P)5.1 Deficiency Has No Impact on Autoimmune Neuroinflammation due to Compensatory K(2P)3.1- and K(V)1.3-Dependent Mechanisms
title_fullStr Murine K(2P)5.1 Deficiency Has No Impact on Autoimmune Neuroinflammation due to Compensatory K(2P)3.1- and K(V)1.3-Dependent Mechanisms
title_full_unstemmed Murine K(2P)5.1 Deficiency Has No Impact on Autoimmune Neuroinflammation due to Compensatory K(2P)3.1- and K(V)1.3-Dependent Mechanisms
title_short Murine K(2P)5.1 Deficiency Has No Impact on Autoimmune Neuroinflammation due to Compensatory K(2P)3.1- and K(V)1.3-Dependent Mechanisms
title_sort murine k(2p)5.1 deficiency has no impact on autoimmune neuroinflammation due to compensatory k(2p)3.1- and k(v)1.3-dependent mechanisms
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4581175/
https://www.ncbi.nlm.nih.gov/pubmed/26213925
http://dx.doi.org/10.3390/ijms160816880
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