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In vitro and in silico perspectives on estrogenicity of tanshinones from Salvia miltiorrhiza

文献类型: 外文期刊

作者: Zhang, Tiehua 1 ; Zhong, Shuning 1 ; Wang, Yongjun 2 ; Dong, Shuyue 1 ; Guan, Tianzhu 1 ; Hou, Ligang 2 ; Xing, XiaoJi 1 ;

作者机构: 1.Jilin Univ, Coll Food Sci & Engn, Changchun 130062, Jilin, Peoples R China

2.Jilin Acad Agr Sci, Inst Agr Resources & Environm, Changchun 130033, Jilin, Peoples R China

关键词: Estrogenic activity; Tanshinones; Fluorescence polarization; Luciferase reporter assay; Molecular docking

期刊名称:FOOD CHEMISTRY ( 影响因子:7.514; 五年影响因子:7.516 )

ISSN: 0308-8146

年卷期: 2019 年 270 卷

页码:

收录情况: SCI

摘要: This work aims to investigate the structure-activity relationship for binding and activation of human estrogen receptor alpha ligand binding domain (hER alpha-LBD) with tanshinones by a combination of in vitro and in silico approaches. The recombinant hER alpha-LBD was expressed in E. coli strain. The direct binding interactions of tanshinones with hER alpha-LBD and their ER alpha agonistic potency were investigated by fluorescence polarization (FP) and reporter gene assays, respectively. FP assay suggested that the tested tanshinones can bind to hER alpha-LBD as affinity ligands. Tanshinones acted as agonists of hER alpha as demonstrated by transactivation of estrogen response element (ERE) in transiently transfected MCF-7 cells and by molecular docking of these compounds into the hydrophobic binding pocket of hER alpha-LBD. Interestingly, comparison of the calculated binding energies versus Connolly solvent-excluded volume and experimental binding affinities showed a good correlation. This work may provide insight into chemical and pharmacological characterization of novel bioactive compounds from Salvia miltiorrhiza.

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