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(-)-(S)-Equol

CAS No. : 531-95-3

產品活性：(-)-(S)-Equol is a high affinity ligand for estrogen receptor β with a K_i of 0.73 nM.

研究領域：Vitamin D Related/Nuclear Receptor  |  Metabolic Enzyme/Protease

作用靶點：Estrogen Receptor/ERR  |  Endogenous Metabolite

結構分類：黃酮類  |  黃烷醇類  |  酚類  |  多酚類

In Vitro: (-)-(S)-Equol shows the greatest affinity for ERβ (Ki=0.73±0.2 nM), whereas its affinity for ERα (Ki=6.41±1 nM) is relatively poor. (-)-(S)-Equol inhibits the growth of LnCaP, DU145 and PC3 human prostate cancer cell lines. (-)-(S)-Equol causes cell cycle arrest in the G2/M phase in PC3 cells by down regulating cyclin B1 and CDK1 and upregulating CDK inhibitors (p21 and p27), as well as inducing apoptosis by upregulating Fas ligand (FasL) and the expression of pro-apoptotic Bim. (-)-(S)-Equol increases the expression of FOXO3a, decreases the expression of p-FOXO3a and enhances the nuclear stability of FOXO3a. (-)-(S)-Equol also decreases the expression of MDM2, which serves as an E3 ubiquitin ligase forp-FOXO3a, thus preventing p-FOXO3a degradation by the proteasome. (-)-(S)-Equol enantioselectively increases the survival of INS-1 cells presumably through activating PKA signaling. (-)-(S)-Equol might have applications as an anti-type 2 diabetic agent. In INS-1 pancreatic β-cells, (-)-(S)-Equol induces phosphorylation of cAMP-response element-binding protein at Ser 133, and induced cAMP-response element-mediated transcription.

In Vivo: (-)-(S)-Equol inhibits the tumor growth by 43.2% and 28.4% compared to the control on day 33, suggesting that the compound is not overtly toxic.

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