Abstract
Sphingosine 1-phosphate (SIP) belongs to a group of platelet-derived lipid mediators that regulate cell differentiation, survival and proliferation. It is
released from platelets after their activation with agents such as thrombin [l]. In addition, intracellular levels of S1 P are increased in several cell types in response to stimulation by a variety of agonists that include platelet-derived growth factor (PDGF) [2,3], tumour necrosis factor 01 (TNFa), nerve growth factor (NGF), vitamin D,, carbachol (acting at M2 and M3 muscarinic acetylcholine receptors), protein kinases C activators (such as phorbol esters), CAMP elevating agents and the cross-linking of antigen to FcRl or FcyRl receptors. SIP is formed by the phosphorylation
of sphingosine, which is catalysed by sphingosine kinase [4].
released from platelets after their activation with agents such as thrombin [l]. In addition, intracellular levels of S1 P are increased in several cell types in response to stimulation by a variety of agonists that include platelet-derived growth factor (PDGF) [2,3], tumour necrosis factor 01 (TNFa), nerve growth factor (NGF), vitamin D,, carbachol (acting at M2 and M3 muscarinic acetylcholine receptors), protein kinases C activators (such as phorbol esters), CAMP elevating agents and the cross-linking of antigen to FcRl or FcyRl receptors. SIP is formed by the phosphorylation
of sphingosine, which is catalysed by sphingosine kinase [4].
Original language | English |
---|---|
Pages (from-to) | 404-409 |
Number of pages | 6 |
Journal | Biochemical Society Transactions |
Volume | 27 |
Issue number | 4 |
DOIs | |
Publication status | Published - Aug 1999 |
Keywords
- protein-coupled receptors
- sphingomyelin-derived lipids
- growth-factor receptor
- airway smooth muscle
- beta gamma subunits
- molecular cloning
- kinase activation
- signaling pathways