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Updated: Feb 22, 2026
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A Pipeline to Investigate the Structures and Signaling Pathways of Sphingosine 1-Phosphate Receptors
Published on: June 8, 2022
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Sphingosine 1-phosphate and cancer
Nigel J Pyne1, Ashref El Buri1, David R Adams2
1Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral St, Glasgow, G4 0RE, Scotland, UK.
Advances in Biological Regulation
|September 25, 2017
Summary
Sphingosine 1-phosphate (S1P) produced by sphingosine kinase 1 (SK1) promotes tumorigenesis. A novel exosome-mediated pathway involving S1P receptor 2 (S1P2) released from cancer cells regulates fibroblast signaling, potentially driving metastasis.
Area of Science:
- Biochemistry
- Cell Biology
- Cancer Research
Background:
- Sphingosine 1-phosphate (S1P) is a bioactive lipid crucial for cellular signaling.
- Sphingosine kinases (SK1 and SK2) catalyze S1P production.
- SK1 is a dimeric enzyme with complex regulatory mechanisms.
Purpose of the Study:
- To elucidate structural and functional aspects of SK1.
- To investigate the role of S1P in tumorigenesis and metastasis.
- To explore a novel intercellular signaling mechanism involving S1P2 in exosomes.
Main Methods:
- Structural and functional analysis of SK1.
- Investigation of S1P production and release.
- Exosome isolation and characterization.
- Analysis of S1P2-mediated signaling in fibroblasts.
Main Results:
- SK1 exhibits coordinated coupling of membrane association, phosphorylation, catalytic activity, and protein-protein interactions.
- S1P produced by SK1 at the plasma membrane promotes tumorigenesis.
- Breast cancer cells release exosomes containing S1P2, which regulates ERK-1/2 signaling in fibroblasts.
Conclusions:
- SK1 possesses intricate regulatory mechanisms essential for its function.
- S1P signaling contributes to cancer progression.
- Exosome-mediated transfer of S1P2 represents a novel mechanism promoting cancer cell metastasis by altering the tumor microenvironment.
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