title: Dup-697, a specific COX-2 inhibitor, suppresses growth and induces apoptosis on K562 leukemia cells by cell-cycle arrest and caspase-8 activation.
abstract: This investigation was designed to assess the effect of DuP-697 on growth and apoptosis in a human chronic myeloid leukemia (CML) cell line (K562 cells) and primary CML cells from CML patient bone marrow. DuP-697 significantly suppressed K562 cells and primary CML cells growth and induced apoptosis in a concentration-dependent manner and the growth-inhibiting effect was independent on Philadelphia chromosome. The IC50 of DuP-697 at 36 h was 31.7 muM. It arrested G1-S phase transmit on cell cycle and its apoptosis activity was partially abrogated by pretreating K562 cells with Z-IETD-fmk, a specific inhibitor of caspase-8. This study suggested that Dup-697 suppresses growth and induces apoptosis on K562 leukemia cells by cell-cycle arrest and caspase-8 activation.
authors.affiliation: Division of Hematology/Institute of Molecular Hematology, Second Xiang-Ya Hospital, Central South University, Changsha, Hunan, 410011, Republic of China. Zgsllzy@public.cs.hn.cn
authors.forename: Hong-Ling
authors.initials: HL
authors.lastname: Peng
authors.forename: Guang-Sen
authors.initials: GS
authors.lastname: Zhang
authors.forename: Ji-Heng
authors.initials: JH
authors.lastname: Liu
authors.forename: Fan-Jie
authors.initials: FJ
authors.lastname: Gong
authors.forename: Rui-Juan
authors.initials: RJ
authors.lastname: Li
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D001854:Bone Marrow Cells / Q000187:drug effects; D053181:Caspase 8 / Q000187:drug effects / Q000378:metabolism; D002453:Cell Cycle / Q000187:drug effects; D052246:Cyclooxygenase 2 Inhibitors / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004789:Enzyme Activation / Q000187:drug effects; D006801:Humans; D020014:K562 Cells; D015464:Leukemia, Myelogenous, Chronic, BCR-ABL Positive / Q000188:drug therapy*; D013876:Thiophenes / Q000494:pharmacology*
chemical_list: D052246:Cyclooxygenase 2 Inhibitors; D013876:Thiophenes; C064874:DuP 697; D053181:Caspase 8