期刊
OXIDATIVE MEDICINE AND CELLULAR LONGEVITY
卷 2016, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2016/3125989
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资金
- Umed in Lodz [502-03/5-108-05/502-54-158, 502-03/5-108-05/502-54-144]
- Polish Ministry of Science and Higher Education [N402422138, NN403250340]
DNA oxidative lesions are widely considered as a potential risk factor for colorectal cancer development. The aim of this work was to determine the role of the efficiency of base excision repair, both in lymphocytes and in epithelial tissue, in patients with CRC and healthy subjects. SNPs were identified within genes responsible for steps following glycosylase action in BER, and patients and healthy subjects were genotyped. A radioisotopic BER assay was used for assessing repair efficiency and TaqMan for genotyping. Decreased BER activity was observed in lymphocyte extract from CRC patients and in cancer tissue extract, compared to healthy subjects. In addition, polymorphisms of EXO1, LIG3, and PolB may modulate the risk of colorectal cancer by decreasing (PolB) or increasing (LIG3 and EXO1) the chance of malignant transformation.
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