Quercetin, Quercetin Glycosides and Taxifolin Differ in their Ability to Induce AhR Activation and CYP1A1 Expression in HepG2 Cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F12%3A33138625" target="_blank" >RIV/61989592:15310/12:33138625 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388971:_____/12:00387058 RIV/61989592:15110/12:33138625

Výsledek na webu

<a href="http://dx.doi.org/10.1002/ptr.4637" target="_blank" >http://dx.doi.org/10.1002/ptr.4637</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ptr.4637" target="_blank" >10.1002/ptr.4637</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quercetin, Quercetin Glycosides and Taxifolin Differ in their Ability to Induce AhR Activation and CYP1A1 Expression in HepG2 Cells

Popis výsledku v původním jazyce

The natural flavonoid quercetin is a low affinity ligand of the aryl hydrocarbon receptor (AhR), a transcription factor regulating the expression of cytochrome P450 (CYP) 1A enzymes. In this study, we examined the ability of quercetin, isoquercitrin (quercetin-3-O-glucoside), rutin (quercetin-3-O-rutinoside) and taxifolin (dihydroquercetin) to activate AhR and induce CYP1A1 expression in human hepatoma HepG2 cells. Gene reporter assays showed that quercetin significantly activated AhR and triggered CYP1A1 transcription after 24 h exposure. These effects were, however, much lower than those of 2,3,7,8-tetrachlorodibenzo-p-dioxin, a prototypical AhR ligand. Quercetin also induced a significant increase in CYP1A1 mRNA levels together with a moderate increase in the level of CYP1A1 activity. In contrast, isoquercitrin and rutin had negligible effects on AhR activity and CYP1A1 expression. Taxifolin at the highest concentration tested (50 ?M) produced a mild non-significant increase in AhR

Název v anglickém jazyce

Quercetin, Quercetin Glycosides and Taxifolin Differ in their Ability to Induce AhR Activation and CYP1A1 Expression in HepG2 Cells

Popis výsledku anglicky

The natural flavonoid quercetin is a low affinity ligand of the aryl hydrocarbon receptor (AhR), a transcription factor regulating the expression of cytochrome P450 (CYP) 1A enzymes. In this study, we examined the ability of quercetin, isoquercitrin (quercetin-3-O-glucoside), rutin (quercetin-3-O-rutinoside) and taxifolin (dihydroquercetin) to activate AhR and induce CYP1A1 expression in human hepatoma HepG2 cells. Gene reporter assays showed that quercetin significantly activated AhR and triggered CYP1A1 transcription after 24 h exposure. These effects were, however, much lower than those of 2,3,7,8-tetrachlorodibenzo-p-dioxin, a prototypical AhR ligand. Quercetin also induced a significant increase in CYP1A1 mRNA levels together with a moderate increase in the level of CYP1A1 activity. In contrast, isoquercitrin and rutin had negligible effects on AhR activity and CYP1A1 expression. Taxifolin at the highest concentration tested (50 ?M) produced a mild non-significant increase in AhR

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CE - Biochemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Phytotherapy Research

ISSN

0951-418X

e-ISSN

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Svazek periodika

26

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

1746-1752

Kód UT WoS článku

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EID výsledku v databázi Scopus

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