A genetic variant in the promoter region of miR-34b/c is associated with a reduced risk of colorectal cancer
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Lin-Bo Gao
Abstract
The miR-34 family members, described as potential tumor suppressors, were downregulated in colorectal cancer (CRC). Loss of miR-34 impairs TP53-mediated cell death, while overexpression of miR-34 induces apoptosis. A potentially functional polymorphism (i.e., rs4938723T/C) in the promoter region of pri-miR-34b/c was predicted to influence the GATA-X binding sites. We aimed to investigate the association between miR-34b/c rs4938723 and TP53 Arg72Pro polymorphisms and the risk of CRC. We genotyped the two polymorphisms in 347 CRC patients and 488 healthy controls using polymerase chain reaction-restriction fragment length polymorphism and DNA sequencing assay. We found that the CC genotype and C allele of the miR-34b/c rs4938723 were associated with a significantly decreased risk of CRC compared with the TT genotype and T allele (CC vs. TT: adjusted OR=0.56; 95% CI, 0.34–0.91; C vs. T: adjusted OR=0.78; 95% CI, 0.64–0.97). In combined analysis, a borderline significance was also observed in subjects carrying the rs4938723 CT/CC and TP53 GG genotypes (adjusted OR=0.66; 95% CI, 0.43–0.99). These findings indicate that the rs4938723 in the promoter region of pri-miR-34b/c was a protective factor for the development of CRC. As the significance is marginal, further replication studies are warranted to confirm these results.
©2013 by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Masthead
- Masthead
- Guest Editorial
- Highlight: Kinin 2012 in Paris
- Highlight: Kinin 2012 in Paris
- Plasma kallikrein-kinin system and diabetic retinopathy
- Tissue kallikrein, blood pressure regulation, and hypertension: insight from genetic kallikrein deficiency
- Carboxypeptidase M augments kinin B1 receptor signaling by conformational crosstalk and enhances endothelial nitric oxide output
- Interactions between BdkrB2 and p53 genes in the developing kidney
- Further pharmacological evaluation of a novel synthetic peptide bradykinin B2 receptor agonist
- Role of kinin B2 receptors in opioid-induced hyperalgesia in inflammatory pain in mice
- Clinical impact of an angiotensin I-converting enzyme insertion/deletion and kinin B2 receptor +9/-9 polymorphisms in the prognosis of renal transplantation
- Bifunctional epitope-agonist ligands of the bradykinin B2 receptor
- Pro-angiogenic effect of human kallikrein-related peptidase 12 (KLK12) in lung endothelial cells does not depend on kinin-mediated activation of B2 receptor
- Review
- Mitochondrial pathways in sarcopenia of aging and disuse muscle atrophy
- Research Articles/Short Communications
- Genes and Nucleic Acids
- A genetic variant in the promoter region of miR-34b/c is associated with a reduced risk of colorectal cancer
- Protein Structure and Function
- SH3-mediated targeting of Wrch1/RhoU by multiple adaptor proteins
