Effect of APE1 T2197G (Asp148Glu) Polymorphism on APE1, XRCC1, PARP1 and OGG1 Expression in Patients with Colorectal Cancer

被引:16
|
作者
Santos, Juliana C. [1 ,2 ]
Funck, Alexandre [1 ]
Silva-Fernandes, Isabelle J. L. [3 ]
Rabenhorst, Silvia H. B. [3 ]
Martinez, Carlos A. R. [1 ]
Ribeiro, Marcelo L. [1 ,2 ]
机构
[1] Univ Sao Francisco, Lab Microbiol & Mol Biol, Clin Pharmacol & Gastroenterol Unit, Sch Med, BR-12916900 Braganca Paulista, SP, Brazil
[2] Univ Estadual Campinas, UNICAMP, BR-13083862 Campinas, SP, Brazil
[3] Univ Fed Ceara, Dept Pathol & Forens Med, BR-60020181 Fortaleza, Ceara, Brazil
基金
巴西圣保罗研究基金会;
关键词
colorectal cancer; DNA repair; APE1; polymorphism; BER; BASE EXCISION-REPAIR; OXIDATIVE DNA-DAMAGE; GENETIC POLYMORPHISMS; RISK; POLY(ADP-RIBOSE); ASSOCIATION; NUCLEOTIDE; COLON; PROGNOSIS; CARCINOMA;
D O I
10.3390/ijms151017333
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
It has been hypothesized that genetic variation in base excision repair (BER) might modify colorectal adenoma risk. Thus, we evaluated the influence of APE1 T2197G (Asp148Glu) polymorphism on APE1, XRCC1, PARP1 and OGG1 expression in normal and tumor samples from patients with colorectal cancer. The results indicate a downregulation of OGG1 and an upregulation of XRCC1 expression in tumor tissue. Regarding the anatomical location of APE1, OGG1 and PARP-1, a decrease in gene expression was observed among patients with cancer in the rectum. In patients with or without some degree of tumor invasion, a significant downregulation in OGG1 was observed in tumor tissue. Interestingly, when taking into account the tumor stage, patients with more advanced grades (III and IV) showed a significant repression for APE1, OGG1 and PARP-1. XRCC1 expression levels were significantly enhanced in tumor samples and were correlated with all clinical and histopathological data. Concerning the polymorphism T2197G, GG genotype carriers exhibited a significantly reduced expression of genes of the BER repair system (APE1, XRCC1 and PARP1). In summary, our data show that patients with colorectal cancer present expression changes in several BER genes, suggesting a role for APE1, XRCC1, PARP1 and OGG1 and APE1 polymorphism in colorectal carcinogenesis.
引用
收藏
页码:17333 / 17343
页数:11
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