Abstract | BACKGROUND AND OBJECTIVE:
DNA methyltransferase 1 (DNMT1) is one of the important molecules regulating DNA methylation. The abnormal expression of DNMT1 was associated with the methylation and inactivation of tumor suppressor gene and tumorigenesis. The aim of this study is to clarify the difference of DNMT1 expression between lung cancer tissues and corresponding normal lung tissues, to analyze the relationships between DNMT1 expression and clinicopathologic characteristics of lung squamous cell carcinoma and adenocarcinoma, and to investigate the correlation between the expressions of DNMT1 and beta-catenin. METHODS: RESULTS: The average positive rate of DNMT1 was significantly higher in 84 lung cancer tissues [(58.04+/-35.07)%] than that in corresponding normal lung tissues [(6.88+/-10.26)%](t=12.835, P<0.001). The high expression of DNMT1 was positively correlated with adenocarcinoma histological type (r=0.365, P=0.001), poor differentiation (r=0.253, P=0.021) and lymph node metastasis (r=0.246, P=0.024) in lung cancer. The expression of DNMT1 was significantly correlated with the cytoplasmic expression of beta-catenin (r=0.571, P<0.001). CONCLUSIONS:
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Authors | Hongtao Xu, Zuozhou Wang, Di Liu, Qingchang Li, Shundong Dai, Enhua Wang |
Journal | Zhongguo fei ai za zhi = Chinese journal of lung cancer
(Zhongguo Fei Ai Za Zhi)
Vol. 13
Issue 9
Pg. 856-60
(Sep 2010)
ISSN: 1999-6187 [Electronic] China |
PMID | 20840813
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- beta Catenin
- DNA (Cytosine-5-)-Methyltransferase 1
- DNA (Cytosine-5-)-Methyltransferases
- DNMT1 protein, human
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Topics |
- Adenocarcinoma
(genetics, metabolism, pathology)
- Adult
- Aged
- Aged, 80 and over
- Carcinoma, Squamous Cell
(genetics, metabolism, pathology)
- DNA (Cytosine-5-)-Methyltransferase 1
- DNA (Cytosine-5-)-Methyltransferases
(genetics, metabolism)
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Lung Neoplasms
(genetics, metabolism, pathology)
- Male
- Middle Aged
- Young Adult
- beta Catenin
(genetics, metabolism)
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