Guggulsterone can act as an antagonist ligand for farnesoid X receptor (FXR) and decrease expression of bile acid-activated genes.
Guggulsterone, a plant sterol that lowers serum cholesterol, has been shown to antagonize FXR activated genes. Transient transfection assay of a human BSEP/luciferase reporter in HepG2 cells transfected with FXR reveals that guggulsterone strongly antagonizes bile acid induction of the BSEP gene. On the other hand, guggulsterone has no effect on FXR inhibition of the CYP7A1 gene, but strongly inhibits the human CYP7A1 gene by activation of pregnane X receptor (PXR).
动物 A (mg/kg) = 动物 B (mg/kg)×动物 B的Km系数/动物 A的Km系数 | |
例如,已知某工具药用于小鼠的剂量为88 mg/kg , 则用于大鼠的剂量换算方法:将88 mg/kg 乘以小鼠的Km系数(3),再除以大鼠的Km系数(6),得到该药物用于大鼠的等效剂量44 mg/kg。
[1] Burris et al (2005) The hypolipidemic natural product guggulsterone is a promiscuous steroid receptor ligand. Mol.Pharmacol. 67 948. PMID: 15602004.
[2] Meyer et al (2005) Is antagonism of E/Z-guggulsterone at the farnesoid X receptor mediated by a noncanonical binding site? A molecular modeling study. J.Med.Chem. 48 6948. PMID: 16250653.
[3] Owsley and Chiang (2003) Guggulsterone antagonizes farnesoid X receptor induction of bile salt export pump but activates pregnane X receptor to inhibit cholesterol 7α-hydroxylase gene. Biochem.Biophys.Res.Comm. 304 191.
分子式 C21H28O2 |
分子量 312.45 |
CAS号 95975-55-6 |
储存方式 ﹣20 ℃冷藏长期储存。冰袋运输 |
溶剂(常温) |
DMSO <1 mg/mL |
Water <1 mg/mL |
Ethanol 10 mM |
体内溶解度
NCT Number | Conditions | Interventions | Sponsor/Collaborators | Phases | Start Date | Last Updated |
NCT01492998 | Chronic Hepatitis C | Other: guggulsterone, a natural FXR antagonist. | Hospices Civils de Lyon | 2010-01-01 | 2011-12-14 |
注:以上所有数据均来自公开文献,并不保证对所有实验均有效,数据仅供参考。
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