A-971432 is a sphingosine-1-phosphate receptor 5 (S1P) agonist that is selective for S1P over S1P and S1P (ICs = 0.006, 0.362, and >10 µM, respectively). It inhibits forskolin-induced cAMP production in CHO cells expressing S1P (EC = 4.1 nM). A-971432 (1 µM) increases electrical resistance of hCMEC/D3 cells in an in vitro blood-brain barrier model, indicating enhanced barrier integrity, and attenuates blood-brain barrier leakage in an R6/2 transgenic mouse model of Huntington's disease when administered at a dose of 0.1 mg/kg. A-971432 (0.1 mg/kg per day, i.p.) decreases the number of errors made in a horizontal ladder task and increases latency to fall in the rotarod test in R6/2 mice. It also increases spontaneous alternation in the t-maze in aged mice when administered at a dose of 0.1 mg/kg.
A-971432 is a potent, selective and orally active sphingosine-1-phosphate (S1P) receptor 5 agonist with IC50s of .362, >10, 0.006 μM for S1P1, S1P3, S1P5 respectively. A-971432 protects blood–brain barrier (BBB) homeostasis. A-971432 reverses age-related cognitive decline. A-971432 has the potential for the research of alzheimer’s disease or multiple sclerosis.
体外研究
A-971432 (0-10 μM) shows selectivity with IC50s of 0.362, >10, 0.006 μM for S1P1, S1P3, S1P5 respectively.
A-971432 (0.1-1000 nM) induces full agonism with an EC50s of 5.7 nM and 4.1 nM for HEK cells and CHO cells, respectively.