title: [Apoptosis-inducing effect of quercetin and kaempferol on human HL-60 cells and its mechanism].
abstract: The purpose of this study was to explore the anti-leukemia effect of quercetin and kaempferol and its mechanism. The HL-60 cells were used as the leukemia models. The inhibitory effects of quercetin and kaempferol on growth of HL-60 cells was assessed by MTT assay. The effect of quercetin and kaempferol on cell cycle in HL-60 cells was detected by flow cytometry. The cytotoxic effect of these 2 drugs was analysed by single cell electrophoresis assay. Western blot analysis was used to study the apoptotic mechanism of HL-60 cells. The results showed that the quercetin and kaempferol had a significant anti-leukemia effect in vitro. The proliferation of HL-60 cells was significantly inhibited in dose-and time-dependent manners after treating with quercetin (r = 0.77) and kaempferol (r = 0.76) respectively, and the cytotoxicity of quercetin was superior to that of kaempferol. The quercetin and kaempferol induced G(2)/M arrest and apoptosis of HL-60 cells. The quercetin and kaempferol could down-regulate the survivin expression. It is concluded that the quercetin and kaempferol have significant anti-leukemia effect in vitro. Furthermore the apoptosis-inducing effect of quercetin is stronger than that of kaempferol, both of which induce apoptosis of HL-60 cells through depressing cell growth, arresting cell cycle and inhibiting expression of survivin.
authors.affiliation: Department of Hematology, Inner Mongolian Medical College Affiliated Hospital, Hohhot 010050, Inner Mongolian Autonomous Region, China.
authors.forename: Hui-Juan
authors.initials: HJ
authors.lastname: Ren
authors.forename: Hong-Jun
authors.initials: HJ
authors.lastname: Hao
authors.forename: Yong-Jin
authors.initials: YJ
authors.lastname: Shi
authors.forename: Xue-Min
authors.initials: XM
authors.lastname: Meng
authors.forename: Yan-Qiu
authors.initials: YQ
authors.lastname: Han
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D002453:Cell Cycle / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D015973:Gene Expression Regulation, Leukemic; D018922:HL-60 Cells; D006801:Humans; D051034:Inhibitor of Apoptosis Proteins / Q000378:metabolism; D044949:Kaempferols / Q000494:pharmacology*; D011794:Quercetin / Q000494:pharmacology*; D000077022:Survivin
chemical_list: C107489:BIRC5 protein, human; D051034:Inhibitor of Apoptosis Proteins; D044949:Kaempferols; D000077022:Survivin; C006552:kaempferol; D011794:Quercetin