title: [Effects of sodium butyrate on proliferation of human oral squamous carcinoma cell line and expression of p27Kip1].
abstract: OBJECTIVE
  To investigate the effect of sodium butyrate (NaB) on inhibition of human oral squamous carcinoma cell line.
  
  
  METHODS
  Human oral squamous carcinoma cell line Tca8113 was treated with different concentration of NaB. Light microscope was used to observe the morphological changes of the carcinoma cells. The cell cycle was analyzed by flow cytometry. Expression of p27(Kip1) was determined with immunocytochemical assay.
  
  
  RESULTS
  NaB significantly inhibited the proliferation of Tca8113 in a time- and dose-dependent manner. Tca8113 cells treated with NaB was arrested in G(0)-G(1) phase. The fraction of cells in G(0)-G(1) were (63.2 ± 2.4)% and (77.2 ± 3.8)% after treated with NaB at the concentration of 2 and 4 mmol/L alternatively, whereas (48.1 ± 2.4)% in G(0)-G(1) phase were observed in control group (P < 0.05). The expression of p27(Kip1) was markedly up-regulated after being treated with NaB.
  
  
  CONCLUSIONS
  NaB treatment can inhibit the growth of oral squamous carcinoma cell line in vitro and induce cell cycle arrest, which might be associated with the increased expression of p27(Kip1) protein.
authors.affiliation: Department of Oral Prevention, School of Stomatology, Nanjing University & Nanjing Stomatological Hospital, Nanjing 210008, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Gong
authors.forename: Wen-mei
authors.initials: WM
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Ji
authors.forename: Yu
authors.initials: Y
authors.lastname: Wang
authors.forename: Da-wei
authors.initials: DW
authors.lastname: Li
mesh_terms: D017209:Apoptosis; D020148:Butyric Acid / Q000494:pharmacology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D002453:Cell Cycle; D002455:Cell Division; D045744:Cell Line, Tumor; D050760:Cyclin-Dependent Kinase Inhibitor p27 / Q000096:biosynthesis*; D006801:Humans; D009062:Mouth Neoplasms / Q000473:pathology*; D015854:Up-Regulation
chemical_list: C436291:CDKN1B protein, human; D020148:Butyric Acid; D050760:Cyclin-Dependent Kinase Inhibitor p27