(Rac)-SAG

(Rac)-SAG is an isoform of SAG (HY-12848). SAG is a potent Smoothened (Smo) receptor agonist (EC₅₀=3 nM; K_d=59 nM). SAG activates the Hedgehog signaling pathway and counteracts Cyclopamine (HY-17024) inhibition of Smo^[1][2][3]. IC50 & Target:EC50: 3 nM (Smo)^[1] In Vitro:SAG (0.1 nM-100 μM; 30 h) induces firefly luciferase expression in Shh-LIGHT2 cells with an EC₅₀ of 3 nM and then inhibits expression at higher concentrations^[1].
SAG (1-1000 nM; 1 h) competes for the binding of BODIPY-cyclopamine to Smo-expressing Cos-1 cells, yielding an apparent dissociation constant (K_d) of 59 nM for the SAG/Smo complex^[1].
SAG (100 nM) inhibits the inhibitory effect of ShhN-induced pathway activation by Robotnikinin^[2].
SAG (250 nM; 48 h) significantly increases SMO mRNA and protein expression in MDAMB231 cells^[3].
SAG (250 nM; 24 and 48 h) increases CAXII mRNA expression in MDAMB231 cells at 24h in normoxic and hypoxic conditions in MDAMB231 cells^[3].
SAG (250 nM; 24 h) increases MDAMB231 cells migration^[3]. In Vivo:SAG (1.0 mM) induces more osteogenesis mainly at the defect borders and a significant increase in BV/TV at the eight-week timepoint in CD-1 mice^[4].
SAG (15-20 mg/kg; i.p.) induces pre-axial polydactyly prevalently in a dose-dependent manner in mice^[5].