Abstract
To investigate the effect of sodium butyrate (NaB) on inhibition of human oral squamous carcinoma cell line. 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. 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. 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.
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