title: Effects of LG268 on Cell Proliferation and Apoptosis of NB4 Cells.
abstract: OBJECTIVE
  To investigate the effect of LG100268 (LG268) on cell proliferation and apoptosis in NB4 cells.
  
  
  METHODS
  NB4 cells were treated with LG268 for 24 h or 48 h. The effect of LG268 on cell proliferation was assessed by the CCK-8 assay and colony-forming assay. Apoptosis and cell cycle were evaluated by flow cytometry. The protein expression levels of Survivin, PARP, c-Myc, cyclin D1, ERK, p-ERK, p38 MAPK, and p- p38 MAPK were detected by western blot.
  
  
  RESULTS
  We found that LG268 inhibited the proliferation of NB4 cells in a dose-dependent manner. Flow cytometry analysis showed that LG268 accelerated apoptosis in NB4 cells in a time- dependent manner and that LG268 treatment led to cell cycle arrest at G0/G1 phase. Moreover, LG268 significantly decreased the protein levels of Survivin, c-Myc, and cyclinD1. Cleaved PARP was observed in the LG268 treatment group but not in the control group. In addition, LG268 increased the phosphorylation level of p38 MAPK and decreased the phosphorylation level of ERK.
  
  
  CONCLUSIONS
  LG268 inhibited cell proliferation and promoted cell apoptosis in NB4 cells.
authors.affiliation: 1. Central Laboratory of Yong-chuan Hospital, Chongqing Medical University, Chongqing, 402160, China; 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Xu
authors.affiliation: 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Zhong
authors.affiliation: 1. Central Laboratory of Yong-chuan Hospital, Chongqing Medical University, Chongqing, 402160, China; 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
authors.forename: Liu-Gen
authors.initials: LG
authors.lastname: Gan
authors.affiliation: 1. Central Laboratory of Yong-chuan Hospital, Chongqing Medical University, Chongqing, 402160, China; 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
authors.forename: Chun-Lan
authors.initials: CL
authors.lastname: Xiao
authors.affiliation: 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
authors.forename: Zhi-Ling
authors.initials: ZL
authors.lastname: Shan
authors.affiliation: 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
authors.forename: Rong
authors.initials: R
authors.lastname: Yang
authors.affiliation: 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Song
authors.affiliation: 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
authors.forename: Liu
authors.initials: L
authors.lastname: Li
authors.affiliation: 1. Central Laboratory of Yong-chuan Hospital, Chongqing Medical University, Chongqing, 402160, China; 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
authors.forename: Bei-Zhong
authors.initials: BZ
authors.lastname: Liu
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D059447:Cell Cycle Checkpoints / Q000187:drug effects; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects*; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects; D006801:Humans; D015473:Leukemia, Promyelocytic, Acute / Q000188:drug therapy* / Q000235:genetics / Q000473:pathology; D009363:Neoplasm Proteins / Q000096:biosynthesis; D009539:Nicotinic Acids / Q000008:administration & dosage*; D010766:Phosphorylation; D013764:Tetrahydronaphthalenes / Q000008:administration & dosage*
chemical_list: D009363:Neoplasm Proteins; D009539:Nicotinic Acids; D013764:Tetrahydronaphthalenes; C095104:LG 100268
keywords: ERK; LG268; NB4 cells; apoptosis; p38 MAPK; proliferation