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Effect of DNA methyltransferase 1 and methyl-CpG-binding protein 2 abnormal expression on cervical lesions and related interaction / 中华流行病学杂志
Chinese Journal of Epidemiology ; (12): 1223-1227, 2013.
Article in Chinese | WPRIM | ID: wpr-321686
ABSTRACT
<p><b>OBJECTIVE</b>To explore the effect of DNA methyltransferase 1 (DNMT1) and methyl-CpG-binding protein 2 (MeCP2) on cervical cancer and cervix precancerous lesion.</p><p><b>METHODS</b>74 patients with cervix squamous cell carcinoma(SCC), 52 patients with cervical intraepithelial neoplasm I (CIN I), 60 patients with cervical intraepithelial neoplasm II - II (CIN II-III)and 58 patients with histologically diagnosed cervix inflammation(CI), were included in this study. Information as demography, reproductive history, life style, HPV infection were collected. Western Blot were used to detect the expression of DNMT1 protein and MeCP2 protein. Real-time PCR was used to detect the expression of DNMT1 and MeCP2 mRNA.</p><p><b>RESULTS</b>Levels of DNMT1 and MeCP2 protein expression increased gradually with the deterioration of cervical lesion (H = 94.33, P < 0.001;F = 21.580, P < 0.001). Along with the deterioration of cervical lesion, levels of DNMT1 and MeCP2 mRNA expression were gradually increasing( F = 4.758, P = 0.003; F = 7.804, P < 0.001). Data from Correlation analysis showed that both protein (r = 0.287, P < 0.001) and mRNA(r = 0.179, P = 0.005)were positive correlated with DNMT1 and MeCP2.</p><p><b>RESULTS</b>of our study indicated that there was an additive interaction between high-expression of DNMT1 protein and high-expression of MeCP2 protein in SCC or CIN II-III. However, there was an additive interaction between high-expression of DNMT1 mRNA and high-expression of MeCP2 mRNA in SCC or CIN II-III.</p><p><b>CONCLUSION</b>Results from our study revealed the fact that both high expression of DNMT1 protein and high expression of MeCP2 protein could increase the risk of cervix cancerization. According to our findings, there might be a synergistic action existed between DNMT1 and MeCP2 during the progression of cervix cancelation.</p>
Subject(s)
Full text: Available Index: WPRIM (Western Pacific) Main subject: Pathology / RNA, Messenger / Carcinoma, Squamous Cell / Uterine Cervical Dysplasia / Uterine Cervical Neoplasms / O(6)-Methylguanine-DNA Methyltransferase / Methyl-CpG-Binding Protein 2 / Genetics / Metabolism Limits: Adult / Aged / Female / Humans Language: Chinese Journal: Chinese Journal of Epidemiology Year: 2013 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Pathology / RNA, Messenger / Carcinoma, Squamous Cell / Uterine Cervical Dysplasia / Uterine Cervical Neoplasms / O(6)-Methylguanine-DNA Methyltransferase / Methyl-CpG-Binding Protein 2 / Genetics / Metabolism Limits: Adult / Aged / Female / Humans Language: Chinese Journal: Chinese Journal of Epidemiology Year: 2013 Type: Article