Dziki L, Dziki A, Mik M, Majsterek I, Kabzinski J
Department of General and Colorectal Surgery, Medical University of Lodz, Lodz, Poland.
Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, Lodz, Poland.
Gastroenterol Res Pract. 2017;2017:3840243. doi: 10.1155/2017/3840243. Epub 2017 Mar 12.
Polymorphisms in DNA repair genes may affect the activity of the BER (base excision repair) and NER (nucleotide excision repair) systems. Using DNA isolated from blood taken from patients ( = 312) and a control group ( = 320) with CRC, we have analyzed the polymorphisms of selected DNA repair genes and we have demonstrated that genotypes 51Gln/His and 148Asp/Glu of APEX gene and 23Gly/Ala of XPA gene may increase the risk of colorectal cancer. At the same time analyzing the gene-gene interactions, we suggest the thesis that the main factor to be considered when analyzing the impact of polymorphisms on the risk of malignant transformation should be intergenic interactions. Moreover, we are suggesting that some polymorphisms may have impact not only on the malignant transformation but also on the stage of the tumor.
DNA修复基因中的多态性可能会影响碱基切除修复(BER)和核苷酸切除修复(NER)系统的活性。我们从患有结直肠癌的患者(n = 312)和对照组(n = 320)采集的血液中分离出DNA,分析了所选DNA修复基因的多态性,并证明APEX基因的51Gln/His和148Asp/Glu基因型以及XPA基因的23Gly/Ala基因型可能会增加患结直肠癌的风险。同时,在分析基因-基因相互作用时,我们提出这样一个论点:在分析多态性对恶性转化风险的影响时,主要应考虑基因间相互作用。此外,我们还认为某些多态性可能不仅影响恶性转化,还会影响肿瘤分期。