Author(s): Gao YJ, Ling TY, Yin XM, Li X, Huang Y
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Abstract OBJECTIVE: To investigate the effects of arecoline and nicotine on the expression of human telomerase reverse transcriptase (hTERT) mRNA and protein in cultured normal human oral keratinocytes (KC). METHODS: The experiments were divided into arecoline group, arecoline/nicotine group and control group. The hTERT mRNA and protein expression of KC was examined by reverse transcription polymerase chain reaction (RT-PCR) and Western blot. RESULTS: Arecoline could induce the hTERT mRNA and protein expression of KC in a dose dependent manner, the hTERT mRNA and protein expression of KC was higher in 0.030, 0.060, 0.090 g/L arecoline group than control group (P < 0.001). Nicotine (0.025 g/L) increased hTERT mRNA and protein expression of KC induced by arecoline. CONCLUSIONS: Arecoline could increase the expression of hTERT mRNA and protein in oral keratinocytes. Nicotine had a synergistic effect on arecoline. hTERT over-expression induced by arecoline and nicotine may play an important role in the malignant transformation of oral submucous fibrosis.
This article was published in Zhonghua Kou Qiang Yi Xue Za Zhi
and referenced in Journal of Cytology & Histology