title: [Effects of celecoxib on the proliferation and apoptosis of human nasopharyngeal carcinoma cell line CNE-2].
abstract: OBJECTIVE
  To detect the effect of Celecoxib on the proliferation and apoptosis of human nasopharyngeal carcinoma cell line CNE-2.
  
  
  METHODS
  The growth inhibition rate of CNE-2 by Celecoxib was evaluated with MTT method. Apoptosis related morphology changes were observed with transmission electron microscopy (TEM). The cell cycle and apoptosis were measured with flow cytometric method (FCM). Apoptotic index (AI) was counted by the TDT-mediated dUTP-biotin nick end-labeling (TUNEL) assay.
  
  
  RESULTS
  The growth of CNE-2 cell was inhibited by celecoxib in a dose-and time-dependent manner. Apoptosis with nuclear chromatin condensation, cell shrinkage, periplasm loss and the formation of apoptotic bodies was observed with TEM. Apoptotic rates of CNE-2 cells treated with 80 and 100 micromol/L celecoxib were (10.47+/-0.18)% and (20.17+/-0.55)% respectively, significantly higher than those of the control group (1.57+/-0.27)% with FCM. The percentage of G0/G1 phase cells increased, whereas the S and G2/M phases cells decreased in a dose-dependent manner after the treatment. TUNEL assay showed that the apoptosis ratio (AI) of CNE-2 treated with Celecoxib was higher than control group (P<0.01).
  
  
  CONCLUSIONS
  Celecoxib can inhibit the growth of human nasopharyngeal carcinoma cell line CNE-2 and induce the cell apoptosis, which may be related to blocking the cell cycle progress of CNE-2 cells.
authors: Department of Oncology, Central Hospital of Yichang City, the First Clinical Medical College of Three Gorges University, Yichang, 443003, China. xuxinhua@medmail.com.cn
authors: Xinhua
authors: X
authors: Xu
authors: Fang
authors: F
authors: Yi
authors: Xiangyang
authors: X
authors: Fu
authors: Daojun
authors: D
authors: Li
authors: Qiao
authors: Q
authors: Huang
authors: Jingtao
authors: J
authors: Du
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D000068579:Celecoxib; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects*; D052246:Cyclooxygenase 2 Inhibitors / Q000494:pharmacology*; D006801:Humans; D009303:Nasopharyngeal Neoplasms / Q000473:pathology; D011720:Pyrazoles / Q000494:pharmacology*; D013449:Sulfonamides / Q000494:pharmacology*
chemical_list: D052246:Cyclooxygenase 2 Inhibitors; D011720:Pyrazoles; D013449:Sulfonamides; D000068579:Celecoxib