title: [Induction of apoptosis in HL-60 cells by bortezomib alone or in combination with harringtonine in vitro].
abstract: The aim of this study was to investigate the effect of bortezomib alone and in combination with harringtonine on apoptosis of HL-60 cells. HL-60 cells were treated with bortezomib, harringtonine in different concentrations for 12 - 48 hours. Cell proliferation was analyzed by MTT assay; the apoptosis of HL-60 cells was observed by DNA gel electrophoresis, fluorescence microscopy and flow cytometry. The results showed that 10 - 50 nmol/L bortezomib could effectively inhibit HL-60 cell proliferation, and induced its apoptosis. After treating for 12 hours, 10 nmol/L bortezomib could trigger cells apoptosis. With time prolongation or dose increase, HL-60 cell apoptotic rate significantly increased. Furthermore, co-administration of bortezomib (10 nmol/L) with harringtonine (30 nmol/L) resulted in a higher cell apoptotic rate when compared with that induced by those agents used alone. It is concluded that the bortezomib can induce HL-60 cells apoptosis in a time-and-dose-dependent manner and synergistic effectiveness can be found when bortezomib combined with harringtonine.
authors.affiliation: Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
authors.forename: Qi-Xin
authors.initials: QX
authors.lastname: Sun
authors.forename: Fan-Yi
authors.initials: FY
authors.lastname: Meng
authors.forename: Yun-Bi
authors.initials: YB
authors.lastname: Fu
authors.forename: Li
authors.initials: L
authors.lastname: Li
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D001897:Boronic Acids / Q000494:pharmacology*; D000069286:Bortezomib; D049109:Cell Proliferation / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004357:Drug Synergism; D018922:HL-60 Cells; D006248:Harringtonines / Q000494:pharmacology*; D006801:Humans; D011719:Pyrazines / Q000494:pharmacology*
chemical_list: D000970:Antineoplastic Agents; D001897:Boronic Acids; D006248:Harringtonines; D011719:Pyrazines; C062500:harringtonin; D000069286:Bortezomib