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Updated: Jul 18, 2026
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A Pipeline to Investigate the Structures and Signaling Pathways of Sphingosine 1-Phosphate Receptors
Published on: June 8, 2022
Sphingosine 1-phosphate phosphatase 2 is induced during inflammatory responses
Diana Mechtcheriakova1, Alexander Wlachos, Jury Sobanov
1Novartis Institutes for BioMedical Research, Vienna, Brunnerstrasse 59, A-1235 Vienna, Austria. diana.mechtcheriakova@novartis.com
Cellular Signalling
|November 23, 2006
Summary
Inflammatory stimuli upregulate S1P phosphatase 2 (SPP2) in various cells. This NF-kappaB-dependent gene plays a pro-inflammatory role, as evidenced by its increased expression in psoriasis and its impact on cytokine production.
Area of Science:
- Cellular biology
- Molecular biology
- Immunology
Background:
- Sphingosine 1-phosphate (S1P) is a bioactive lipid mediator.
- S1P levels are regulated by synthesis and degradation enzymes.
- Inflammatory conditions can alter S1P metabolism.
Purpose of the Study:
- To investigate the expression patterns of S1P-metabolizing enzymes under inflammatory conditions.
- To elucidate the regulatory mechanisms of S1P phosphatase 2 (SPP2) gene expression.
- To determine the role of SPP2 in inflammatory signalling.
Main Methods:
- Analysis of mRNA expression of sphingosine kinases, S1P phosphatases, and S1P lyase.
- Cell-type specific expression analysis of sphingosine kinase type 1 (SPHK1).
- NF-kappaB binding site analysis and siRNA-mediated silencing of NF-kappaB/RelA to study SPP2 regulation.
- Assessment of SPP2 function by silencing its expression in endothelial cells and measuring cytokine levels.
- Analysis of SPP2 expression in lesional skin from psoriasis patients.
Main Results:
- SPHK1 mRNA expression is cell-type specific.
- SPP2 expression and activity are significantly upregulated by inflammatory stimuli in multiple cell types.
- SPP2 is an NF-kappaB-dependent gene.
- Silencing SPP2 reduces TNF-alpha-induced IL-1beta and IL-8 production in endothelial cells.
- SPP2 is upregulated in psoriatic skin lesions.
Conclusions:
- SPP2 is a key enzyme in S1P metabolism that is upregulated during inflammation.
- SPP2 acts as a pro-inflammatory mediator by influencing cytokine production.
- SPP2 is regulated by NF-kappaB signalling.
- SPP2 represents a potential therapeutic target in inflammatory diseases like psoriasis.
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