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Sphingosine 1-Phosphate Counteracts the Effects of Interleukin-1β in Human Chondrocytes
OBJECTIVE: The lipid mediator sphingosine 1-phosphate (S1P) is found in the synovial fluid of osteoarthritis (OA) patients. S1P protects bovine cartilage by counteracting the effects of interleukin-1β (IL-1β). This study was undertaken to examine the interaction of S1P and IL-1β in human OA chondroc...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Blackwell Publishing Ltd
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3763206/ https://www.ncbi.nlm.nih.gov/pubmed/23666803 http://dx.doi.org/10.1002/art.37989 |
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author | Stradner, Martin H Gruber, Gerald Angerer, Hannes Huber, Verena Setznagl, Daniela Kremser, Marie-Luise Moazedi-Fürst, Florentine C Windhager, Reinhard Graninger, Winfried B |
author_facet | Stradner, Martin H Gruber, Gerald Angerer, Hannes Huber, Verena Setznagl, Daniela Kremser, Marie-Luise Moazedi-Fürst, Florentine C Windhager, Reinhard Graninger, Winfried B |
author_sort | Stradner, Martin H |
collection | PubMed |
description | OBJECTIVE: The lipid mediator sphingosine 1-phosphate (S1P) is found in the synovial fluid of osteoarthritis (OA) patients. S1P protects bovine cartilage by counteracting the effects of interleukin-1β (IL-1β). This study was undertaken to examine the interaction of S1P and IL-1β in human OA chondrocytes. METHODS: Human cartilage was obtained from patients undergoing total knee joint replacement. Chondrocytes were cultured in monolayer and treated with IL-1β and S1P. Expression of S1P receptor subtypes and genes involved in cartilage degradation was evaluated using real-time polymerase chain reaction, immunohistochemistry, and Western blotting. S1P signaling was evaluated using inhibitors of S1P receptors and small interfering RNA (siRNA) knockdown of the S1P(2) receptor. Phosphorylation of MAP kinases and NF-κB in response to IL-1β and S1P was detected by Western blotting. RESULTS: S1P(2) was identified as the most prevalent S1P receptor subtype in human OA cartilage and chondrocytes in vitro. S1P reduced expression of inducible nitric oxide synthase (iNOS) in IL-1β–treated chondrocytes. Reduction of ADAMTS-4 and matrix metalloproteinase 13 expression by S1P correlated with S1P(2) expression. Pharmacologic inhibition of the S1P(2) receptor, but not the S1P(1) and S1P(3) receptors, abrogated the inhibition of iNOS expression. Similar results were observed using siRNA knockdown. S1P signaling inhibited IL-1β–induced phosphorylation of p38 MAPK. CONCLUSION: In human chondrocytes, S1P reduces the induction of catabolic genes in the presence of IL-1β. Activation of the S1P(2) receptor counteracts the detrimental phosphorylation of p38 MAPK by IL-1β. |
format | Online Article Text |
id | pubmed-3763206 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Blackwell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-37632062013-09-09 Sphingosine 1-Phosphate Counteracts the Effects of Interleukin-1β in Human Chondrocytes Stradner, Martin H Gruber, Gerald Angerer, Hannes Huber, Verena Setznagl, Daniela Kremser, Marie-Luise Moazedi-Fürst, Florentine C Windhager, Reinhard Graninger, Winfried B Arthritis Rheum Chondrocyte Biology OBJECTIVE: The lipid mediator sphingosine 1-phosphate (S1P) is found in the synovial fluid of osteoarthritis (OA) patients. S1P protects bovine cartilage by counteracting the effects of interleukin-1β (IL-1β). This study was undertaken to examine the interaction of S1P and IL-1β in human OA chondrocytes. METHODS: Human cartilage was obtained from patients undergoing total knee joint replacement. Chondrocytes were cultured in monolayer and treated with IL-1β and S1P. Expression of S1P receptor subtypes and genes involved in cartilage degradation was evaluated using real-time polymerase chain reaction, immunohistochemistry, and Western blotting. S1P signaling was evaluated using inhibitors of S1P receptors and small interfering RNA (siRNA) knockdown of the S1P(2) receptor. Phosphorylation of MAP kinases and NF-κB in response to IL-1β and S1P was detected by Western blotting. RESULTS: S1P(2) was identified as the most prevalent S1P receptor subtype in human OA cartilage and chondrocytes in vitro. S1P reduced expression of inducible nitric oxide synthase (iNOS) in IL-1β–treated chondrocytes. Reduction of ADAMTS-4 and matrix metalloproteinase 13 expression by S1P correlated with S1P(2) expression. Pharmacologic inhibition of the S1P(2) receptor, but not the S1P(1) and S1P(3) receptors, abrogated the inhibition of iNOS expression. Similar results were observed using siRNA knockdown. S1P signaling inhibited IL-1β–induced phosphorylation of p38 MAPK. CONCLUSION: In human chondrocytes, S1P reduces the induction of catabolic genes in the presence of IL-1β. Activation of the S1P(2) receptor counteracts the detrimental phosphorylation of p38 MAPK by IL-1β. Blackwell Publishing Ltd 2013-08 2013-07-26 /pmc/articles/PMC3763206/ /pubmed/23666803 http://dx.doi.org/10.1002/art.37989 Text en Copyright © 2013 by the American College of Rheumatology http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. |
spellingShingle | Chondrocyte Biology Stradner, Martin H Gruber, Gerald Angerer, Hannes Huber, Verena Setznagl, Daniela Kremser, Marie-Luise Moazedi-Fürst, Florentine C Windhager, Reinhard Graninger, Winfried B Sphingosine 1-Phosphate Counteracts the Effects of Interleukin-1β in Human Chondrocytes |
title | Sphingosine 1-Phosphate Counteracts the Effects of Interleukin-1β in Human Chondrocytes |
title_full | Sphingosine 1-Phosphate Counteracts the Effects of Interleukin-1β in Human Chondrocytes |
title_fullStr | Sphingosine 1-Phosphate Counteracts the Effects of Interleukin-1β in Human Chondrocytes |
title_full_unstemmed | Sphingosine 1-Phosphate Counteracts the Effects of Interleukin-1β in Human Chondrocytes |
title_short | Sphingosine 1-Phosphate Counteracts the Effects of Interleukin-1β in Human Chondrocytes |
title_sort | sphingosine 1-phosphate counteracts the effects of interleukin-1β in human chondrocytes |
topic | Chondrocyte Biology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3763206/ https://www.ncbi.nlm.nih.gov/pubmed/23666803 http://dx.doi.org/10.1002/art.37989 |
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