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Sphingosine-1-phosphate (S1P) receptor modulators act on S1PR1 to S1PR5, five G protein-coupled lipid receptors. In 1998 S1P was identified as a ligand of the orphan receptor endothelial differentiation gene 1 (EDG-1), now called S1PR1. FTY720 (fingolimod) was shown in 2002 to be phosphorylated in vivo and to act on four of the five S1P receptors. Two years later, lymphocyte egress from thymus and lymph nodes was found to depend on S1PR1. Ozanimod, BAF312 and ponesimod are further S1PR1-directed modulators, CYM 5442 HCl is a selective S1PR1 agonist and TY-52156 blocks S1PR3. Opaganib inhibits sphingosine kinase 2 (SphK2) and so limits S1P synthesis upstream of the receptors.
BMS-986104 hydrochloride is a selective partial agonist of the S1P1 receptor, involved in modulating sphingosine-1-phosphate signaling pathways. This compound exhibits potential therapeutic effects in the context of autoimmune diseases by influencing lymphocyte trafficking and immune response. It serves as a valuable tool for research aimed at understanding and developing treatments for various autoimmune disorders.
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PPI-4955 is a selective agonist of the sphingosine-1-phosphate receptor subtype 1 (S1P₁), displaying an EC50 of 1.62 nM. Its active phosphorylated form, PPI-4955-P, demonstrates exceptional receptor selectivity, with IC50 values of 0.23 nM for hS1P₁, 2000 nM for hS1P₃, 6.5 nM for hS1P₄, and 184 nM for hS1P₅. This compound significantly enhances in vivo phosphorylation efficiency, leading to lymphocyte reduction and a potential decrease in cardiovascular risk. PPI-4955 is applicable for research in immunomodulation and cardiovascular studies.
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Synonyms: (R)-RPC-1063 hydrochloride
(R)-Ozanimod hydrochloride is the R-isomer of the immunomodulator Ozanimod, primarily targeting sphingosine-1-phosphate receptors (S1PRs). This compound exhibits potent anti-inflammatory activity and is primarily used in research related to autoimmune diseases, including multiple sclerosis and ulcerative colitis. It serves as a valuable tool for studying the modulation of immune responses and exploring therapeutic avenues in chronic inflammatory conditions.
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