S1PR3 Agonist

Siponimod (BAF-312) is an orally active, blood-brain barrier penetrant dual agonist of S1P1/S1P5, with EC₅₀ values of 0.39 nM and 0.98 nM, respectively. Siponimod induces S1P1 internalization, activates GIRK channels, inhibits lymphocyte egress, reduces peripheral lymphocyte counts, triggers transient bradycardia, prevents synaptic neurodegeneration, promotes remyelination, alleviates demyelination, and prevents the loss of GABAergic interneurons. Siponimod can be used in research related to multiple sclerosis.

Ponesimod (ACT-128800) is a potent, selective and orally active agonist of S1P₁, with an IC₅₀ of 6 nM in a radioligand binding assay. Ponesimod activates S1P₁-mediated signal transduction with high potency (EC₅₀=5.7 nM). Ponesimod can protect against lymphocyte-mediated tissue inflammation.

CYM-5478 is a potent and highly selective S1P₂ agonist with an EC₅₀ of 119 nM in a TGFα-shedding assay. CYM-5478 protects neural-derived cell lines against Cisplatin toxicity.

AMG 369 is an orally active and potent dual S1P₁/S1P₅ agonist with limited activity at S1P₃ and no activity at S1P₂/S1P₄. AMG 369 reduces blood lymphocyte counts. AMG 369 delays onset and reduces severity of experimental autoimmune encephalomyelitis in rat.

Siponimod (BAF-312) hemifumarate is an orally active, blood-brain barrier penetrant dual agonist of S1P1/S1P5, with EC₅₀ values of 0.39 nM and 0.98 nM, respectively. Siponimod hemifumarate induces S1P1 internalization, activates GIRK channels, inhibits lymphocyte egress, reduces peripheral lymphocyte counts, triggers transient bradycardia, prevents synaptic neurodegeneration, promotes remyelination, alleviates demyelination, and prevents the loss of GABAergic interneurons. Siponimod hemifumarate can be used in research related to multiple sclerosis.

L-threo Lysosphingomyelin (d18:1) (L-threo-Sphingosylphosphorylcholine) is an endogenous bioactive sphingolipid. L-threo Lysosphingomyelin (d18:1) is a potent S1P receptor agonist with EC₅₀s of 19.3, 131.8, and 313.3 nM for hS1P₁, hS1P₃, and hS1P₂, respectively.

TC-SP 14 (compound 14) is an orally active and potent S1P1 agonist (EC₅₀ = 0.042 μM) with minimal activity at S1P3 (EC₅₀ = 3.47 μM). TC-SP 14 significantly reduces blood lymphocyte counts and attenuates a delayed type hypersensitivity (DTH) response to antigen challenge.