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Hydrogen sulfide metabolism regulates endothelial solute barrier function
Hydrogen sulfide (H(2)S) is an important gaseous signaling molecule in the cardiovascular system. In addition to free H(2)S, H(2)S can be oxidized to polysulfide which can be biologically active. Since the impact of H(2)S on endothelial solute barrier function is not known, we sought to determine wh...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4993857/ https://www.ncbi.nlm.nih.gov/pubmed/27552214 http://dx.doi.org/10.1016/j.redox.2016.08.004 |
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author | Yuan, Shuai Pardue, Sibile Shen, Xinggui Alexander, J. Steven Orr, A. Wayne Kevil, Christopher G. |
author_facet | Yuan, Shuai Pardue, Sibile Shen, Xinggui Alexander, J. Steven Orr, A. Wayne Kevil, Christopher G. |
author_sort | Yuan, Shuai |
collection | PubMed |
description | Hydrogen sulfide (H(2)S) is an important gaseous signaling molecule in the cardiovascular system. In addition to free H(2)S, H(2)S can be oxidized to polysulfide which can be biologically active. Since the impact of H(2)S on endothelial solute barrier function is not known, we sought to determine whether H(2)S and its various metabolites affect endothelial permeability. In vitro permeability was evaluated using albumin flux and transendothelial electrical resistance. Different H(2)S donors were used to examine the effects of exogenous H(2)S. To evaluate the role of endogenous H(2)S, mouse aortic endothelial cells (MAECs) were isolated from wild type mice and mice lacking cystathionine γ-lyase (CSE), a predominant source of H(2)S in endothelial cells. In vivo permeability was evaluated using the Miles assay. We observed that polysulfide donors induced rapid albumin flux across endothelium. Comparatively, free sulfide donors increased permeability only with higher concentrations and at later time points. Increased solute permeability was associated with disruption of endothelial junction proteins claudin 5 and VE-cadherin, along with enhanced actin stress fiber formation. Importantly, sulfide donors that increase permeability elicited a preferential increase in polysulfide levels within endothelium. Similarly, CSE deficient MAECs showed enhanced solute barrier function along with reduced endogenous bound sulfane sulfur. CSE siRNA knockdown also enhanced endothelial junction structures with increased claudin 5 protein expression. In vivo, CSE genetic deficiency significantly blunted VEGF induced hyperpermeability revealing an important role of the enzyme for barrier function. In summary, endothelial solute permeability is critically regulated via exogenous and endogenous sulfide bioavailability with a prominent role of polysulfides. |
format | Online Article Text |
id | pubmed-4993857 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-49938572016-08-31 Hydrogen sulfide metabolism regulates endothelial solute barrier function Yuan, Shuai Pardue, Sibile Shen, Xinggui Alexander, J. Steven Orr, A. Wayne Kevil, Christopher G. Redox Biol Research Paper Hydrogen sulfide (H(2)S) is an important gaseous signaling molecule in the cardiovascular system. In addition to free H(2)S, H(2)S can be oxidized to polysulfide which can be biologically active. Since the impact of H(2)S on endothelial solute barrier function is not known, we sought to determine whether H(2)S and its various metabolites affect endothelial permeability. In vitro permeability was evaluated using albumin flux and transendothelial electrical resistance. Different H(2)S donors were used to examine the effects of exogenous H(2)S. To evaluate the role of endogenous H(2)S, mouse aortic endothelial cells (MAECs) were isolated from wild type mice and mice lacking cystathionine γ-lyase (CSE), a predominant source of H(2)S in endothelial cells. In vivo permeability was evaluated using the Miles assay. We observed that polysulfide donors induced rapid albumin flux across endothelium. Comparatively, free sulfide donors increased permeability only with higher concentrations and at later time points. Increased solute permeability was associated with disruption of endothelial junction proteins claudin 5 and VE-cadherin, along with enhanced actin stress fiber formation. Importantly, sulfide donors that increase permeability elicited a preferential increase in polysulfide levels within endothelium. Similarly, CSE deficient MAECs showed enhanced solute barrier function along with reduced endogenous bound sulfane sulfur. CSE siRNA knockdown also enhanced endothelial junction structures with increased claudin 5 protein expression. In vivo, CSE genetic deficiency significantly blunted VEGF induced hyperpermeability revealing an important role of the enzyme for barrier function. In summary, endothelial solute permeability is critically regulated via exogenous and endogenous sulfide bioavailability with a prominent role of polysulfides. Elsevier 2016-08-11 /pmc/articles/PMC4993857/ /pubmed/27552214 http://dx.doi.org/10.1016/j.redox.2016.08.004 Text en © 2016 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Research Paper Yuan, Shuai Pardue, Sibile Shen, Xinggui Alexander, J. Steven Orr, A. Wayne Kevil, Christopher G. Hydrogen sulfide metabolism regulates endothelial solute barrier function |
title | Hydrogen sulfide metabolism regulates endothelial solute barrier function |
title_full | Hydrogen sulfide metabolism regulates endothelial solute barrier function |
title_fullStr | Hydrogen sulfide metabolism regulates endothelial solute barrier function |
title_full_unstemmed | Hydrogen sulfide metabolism regulates endothelial solute barrier function |
title_short | Hydrogen sulfide metabolism regulates endothelial solute barrier function |
title_sort | hydrogen sulfide metabolism regulates endothelial solute barrier function |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4993857/ https://www.ncbi.nlm.nih.gov/pubmed/27552214 http://dx.doi.org/10.1016/j.redox.2016.08.004 |
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