ArticleArthritis and rheumatism2013
Sphingosine 1-phosphate counteracts the effects of interleukin-1β in human chondrocytes.
Article in Arthritis and rheumatism, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 19 citations in OpenAlex.
- Phospholipids and Sphingolipids in Osteoarthritis.Biomolecules · 2025Review
- Functional Insights into the Sphingolipids C1P, S1P, and SPC in Human Fibroblast-like Synoviocytes by Proteomic Analysis.International journal of molecular sciences · 2024Article
- Clinical efficacy of Yiqi Yangxue formula on knee osteoarthritis and unraveling therapeutic mechanism through plasma metabolites in rats.Frontiers in genetics · 2023Article
- Review
- Preclinical and Clinical Evidence for the Involvement of Sphingosine 1-Phosphate Signaling in the Pathophysiology of Vascular Cognitive Impairment.Neuromolecular medicine · 2021Review
- Progranulin derivative Atsttrin protects against early osteoarthritis in mouse and rat models.Arthritis research & therapy · 2017Article
- Hyperbaric oxygen protects type II collagen in interleukin-1β-induced mandibular condylar chondrocyte via inhibiting the JNK/c-Jun signaling pathway.Oncotarget · 2017Article
- Sphingosine-1-Phosphate Receptor-2 Antagonists: Therapeutic Potential and Potential Risks.Frontiers in pharmacology · 2016Review
- Mechanisms of tissue damage in arthritis.Seminars in immunopathology · 2014Review
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Authors and funding
9 authors at 3 institutions in 2 countries.
Funding
Abstract
objectiveThe 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.
methodsHuman 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 S1P2 receptor. Phosphorylation of MAP kinases and NF-κB in response to IL-1β and S1P was detected by Western blotting.
resultsS1P2 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 S1P2 expression. Pharmacologic inhibition of the S1P2 receptor, but not the S1P1 and S1P3 receptors, abrogated the inhibition of iNOS expression. Similar results were observed using siRNA knockdown. S1P signaling inhibited IL-1β-induced phosphorylation of p38 MAPK.
conclusionIn human chondrocytes, S1P reduces the induction of catabolic genes in the presence of IL-1β. Activation of the S1P2 receptor counteracts the detrimental phosphorylation of p38 MAPK by IL-1β.
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