SB-674042 is a potent and selective non-peptide orexin OX1 receptor antagonist (Kd=5.03 nM), exhibits 100-fold selectivity for OX1 over OX2 receptors with IC50 values of 3.76 nM and 531 nM, respectively.
性状
Solid
IC50 & Target[1][2]
OX1 Receptor
3.76 nM (IC50)
OX2 Receptor
531 nM (IC50)
OX1 Receptor
1.1 nM (Ki)
OX2 Receptor
129 nM (Ki)
体外研究(In Vitro)
SB-674042 ([H]) (0.2-24 nM; 2 h) shows high-affinity and serves as a radio ligand suitable for labelling human OX1 receptors stably expressed in CHO cells.
SB-674042 (5 μM; 4 ℃ for 30 min, and 37 ℃ for 3 h) reduces the potency of CB1 receptor agonist (HY-14137) to phosphorylate ERK1/2 in HEK293 cells co-expressing the orexin-1 and CB1 receptors.
SB-674042 (1 μM; 24 h) eradicates the increase in mTOR phosphorylation in response to Orexin-A (HY-106224) (1 nM-1 μM; 24 h) in INS-1 cells, indicating activation of the mTOR pathway induced by orexin-A was dependent on the activated OX1 receptor.
Medlife has not independently confirmed the accuracy of these methods. They are for reference only.
Western Blot Analysis
Cell Line:
INS-1 cells
Concentration:
1 μM
Incubation Time:
24 hours; accompanied with 1 μM Orexin-A for 24 hour
Result:
Decreased the phosphorylation level of mTOR induced by Orexin-A.
体内研究(In Vivo)
SB-674042 (0.3 nM/0.3 μL; icv; single dose) reduces contextual and cues fear freezing responses in Stay animals in Stress Alternatives Model (SMA) in mice.
Medlife has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Model:
Stress-induced mice model (male C57BL/6NHsd mice, 22-26 g)
Dosage:
0.3 nM/0.3 μL
Administration:
Intracerebroventricular injection; subjected mice to 4 days of social aggression (days 1-4)
Result:
Resulted 39.4% Escape and 60.6% Stay phenotypes among mice.