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Quercetin metabolism in vital and apoptotic human leukaemia cells

机译:生命和凋亡性人类白血病细胞中的槲皮素代谢

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摘要

The metabolism of the flavonol quercetin in human leukaemia (HL-60) cells was investigated. The fluorescence that is elicited by quercetin upon binding to a target protein was quickly attenuated in vital cells, while apoptotic cells showed persistent fluorescence. The dynamics of induction and loss of fluorescence in the cells were quantified by flow cytometry. Several potential metabolites of quercetin, apart from isorhamnetin, had weak or no fluorogenic properties with test proteins. HPLC analysis showed that quercetin was metabolised to several substances, among them glycosylated metabolites. The loss of fluorescence in vital cells offers the unique opportunity to directly observe the metabolic conversion of quercetin in human cells.
机译:研究了黄酮槲皮素在人白血病(HL-60)细胞中的代谢。槲皮素与靶蛋白结合后引起的荧光在活细胞中迅速减弱,而凋亡细胞则显示持续荧光。通过流式细胞术对细胞中荧光诱导和丢失的动力学进行定量。除异鼠李素外,槲皮素的几种潜在代谢产物对测试蛋白的荧光性质较弱或无荧光。 HPLC分析表明槲皮素被代谢成几种物质,其中包括糖基化代谢物。生命细胞荧光的丧失为直接观察槲皮素在人细胞中的代谢转化提供了独特的机会。

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