title: [Effect of ZGDHu-1 on proliferation and apoptosis of A549 cells in vitro and antitumor activity in vivo].
abstract: This study is to explore the mechanism and effect of N, N'-di-(m-methylphenyl)-3, 6-dimethyl-1, 4-dihydro-1, 2, 4, 5-tetrazine-1, 4-dicarboamide (ZGDHu-1) on proliferation and apoptosis of A549 cells in vitro and on A549 xenograft tumor in nude mice. With different concentrations of ZGDHu-1 at different times were used to treat A549 cells in vitro. The proliferation was determined by living cell count, SRB assay and Brdu-ELISA. Cell apoptosis was determined by cell morphology, DNA agarose gel electrophoresis, DNA content, Annexin V/PI and Hoechst 33258 labeling method. The nude mice model of A549 xenograft tumor was established by subcutaneous inoculation. The suppression activity of ZGDHu-1 by intraperitoneal injection on xenograft mice model was detected. The expressions of bcl-2, bax and p53 gene and protein were analyzed by RT-PCR and flow cytometry. ZGDHu-1 can inhibit A549 cell proliferation viability within a certain range of treating time and does, and a majority of A549 cells were arrested in G2-M phase. The A549 cells apoptosis was confirmed by typical cell morphology, DNA fragment, Sub G1 phase, Hoechst 33258 and Annexin V/PI labeling method with a time and dose related manner. When the xenograft tumor mice model were treated with 10, 20 and 40 mg x kg(-1) ZGDHu-1 for 14 days, the tumor growth inhibition rate were 43.7%, 56.9% and 60.0%, respectively. The expression of bax, bax/bcl-2 and p53 gene and protein increased significantly and bcl-2 decreased slightly by the treatment of ZGDHu-1. ZGDHu-1 can significantly suppress the growth of A549 xenograft tumor in vivo and inhibited proliferation by inducing tumor cell apoptosis in vitro. The mechanism may associate with its up-regulation of bax and p53 during the apoptosis process.
authors.affiliation: Central Laboratory, Zhejiang Provincial People's Hospital, Hangzhou 310014, China.
authors.forename: Yong-Lie
authors.initials: YL
authors.lastname: Zhou
authors.forename: Wei-Xiao
authors.initials: WX
authors.lastname: Hu
authors.forename: Ya-Ping
authors.initials: YP
authors.lastname: Lü
authors.forename: Lian-Nü
authors.initials: LN
authors.lastname: Qiu
authors.forename: Wen-Song
authors.initials: WS
authors.lastname: Wang
authors.forename: Zhong-Yu
authors.initials: ZY
authors.lastname: Yang
authors.forename: Jian-Dong
authors.initials: JD
authors.lastname: Liu
authors.forename: Guo-Wu
authors.initials: GW
authors.lastname: Rao
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D005260:Female; D005434:Flow Cytometry; D006573:Heterocyclic Compounds, 1-Ring / Q000494:pharmacology*; D006801:Humans; D008175:Lung Neoplasms / Q000378:metabolism / Q000473:pathology / Q000517:prevention & control*; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000096:biosynthesis / Q000235:genetics; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics; D011897:Random Allocation; D020133:Reverse Transcriptase Polymerase Chain Reaction; D016159:Tumor Suppressor Protein p53 / Q000096:biosynthesis / Q000235:genetics; D023041:Xenograft Model Antitumor Assays; D051028:bcl-2-Associated X Protein / Q000096:biosynthesis / Q000235:genetics
chemical_list: D000970:Antineoplastic Agents; D006573:Heterocyclic Compounds, 1-Ring; C522668:N,N-di-(m-methylphenyl)-3,6-dimethyl-1,4-dihydro-1,2,4,5-tetrazine-1,4-dicarboxamide; D019253:Proto-Oncogene Proteins c-bcl-2; D012333:RNA, Messenger; D016159:Tumor Suppressor Protein p53; D051028:bcl-2-Associated X Protein