title: Correlation of survivin, p53 and Ki-67 in laryngeal cancer Hep-2 cell proliferation and invasion.
abstract: OBJECTIVE
  To investigate the mechanism of survivin, p53 and Ki-67 on Hep-2 human laryngeal cancer endothelial cell proliferation and invasion.
  
  
  METHODS
  Laryngeal squamous cell carcinoma and paracancerous normal tissues were collected, total RNA was extracted from tissues, survivin, p53 and Ki-67 gene mRNA expression levels in laryngeal cancer and the adjacent tissues were detected by Real-time PCR. Human laryngeal cancer Hep-2 epithelial cells were selected, survivin gene was overexpressed, and cell proliferation was detected by MTT. p53 and Ki-67 gene expression changes in overexpressed survivin gene were detected by Western blot. Changes in Hep-2 cell invasive ability were studied when survivin was overexpressed as detected by Transwell invasion assay.
  
  
  RESULTS
  In the adjacent tissues, survivin, p53 and Ki-67 gene relative expression levels were 1.72 ± 0.9, 13.7 ± 5.7 and 5.7 ± 1.3, respectively; while in cancer tissues, gene relative expression levels were 53.7 ± 8.3, 66.7 ± 5.2 and 61.0 ± 3.1, respectively, which was significantly increased. As detected by MTT, relative cell survival rate within 12 h of survivin overexpression were: load control group (88.5 ± 1.6)%; overexpressed group (90.3 ± 1.9)%. Transwell invasion assay results indicated that overexpressed survivin could significantly increase the relative survival rate of cells.
  
  
  CONCLUSIONS
  Expressions of p53, Ki67 and survivin are increased in cancer; and there is a positive correlation between survivin, p53 and Ki67 expressions in laryngeal carcinoma.
authors: Department of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Hebei Engineering University, 056002, Handan, China. Electronic address: psg334@126.com.
authors: Shi-Geng
authors: SG
authors: Pei
authors: Hebei Engineering University Medical College, 056002, Handan, China.
authors: Ju-Xiang
authors: JX
authors: Wang
authors: Department of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Hebei Engineering University, 056002, Handan, China.
authors: Xue-Ling
authors: XL
authors: Wang
authors: Department of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Hebei Engineering University, 056002, Handan, China.
authors: Qing-Jun
authors: QJ
authors: Zhang
authors: Department of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Hebei Engineering University, 056002, Handan, China.
authors: Hong
authors: H
authors: Zhang
keywords: Hep-2; Ki67; Laryngeal cancer; Survivin; Transwell; p53