北印度女性中MicroRNA 146a和MicroRNA 196a2基因多态性与乳腺癌风险的关联
Association between Microrna 146a and Microrna 196a2 Genes Polymorphism and Breast Cancer Risk in North Indian Women.
作者信息
Bodal Vijay Kumar, Sangwan Shruti, Bal Manjit Singh, Kaur Mohanvir, Sharma Sidarth, Kaur Bhavleen
机构信息
Department of Pathology, Government Medical College, Patiala, India. Email:
出版信息
Asian Pac J Cancer Prev. 2017 Sep 27;18(9):2345-2348. doi: 10.22034/APJCP.2017.18.9.2345.
Background: Micro RNAs (miRNAs) are small, noncoding RNA molecules. They can function as either oncogenes or tumor suppressor genes. Single nucleotide polymorphisms (SNP) present in the pre-miRNA region could affect the processing of miRNA and thus alter mature miRNA expression. The studies done so far had shown conflicting results regarding association of two common polymorphisms i.e.hsa-miR-146 rs2910164 and hsa-miR-196a2 rs11614913 with breast cancer. OBJECTIVE: In the study, we examined the hsa-miR-146 rs2910164 and hsa-miR-196a2 rs11614913 SNP association with breast cancer patients in north Indian women. Materials and Methods: This study included 100 breast cancer patients and 100 controls and was done over a period of two years. Genotypes of the hsa-miR-146 (rs2910164 G>C) and hsa-miR-196a2 (rs11614913 C>T) were identified by polymerase chain reaction – restriction length polymorphism (PCR-RFLP) technique in peripheral blood DNA samples. Statistical analysis: We assessed the strength of association of miRNA polymorphisms with breast cancer using Odds ratio (OR) along with 95% confidence intervals. Results: Heterozygous genotypes of hsa-miR-196a2 rs11614913 and combined hsa-miR-146 rs2910164 & hsa-miR-196a2 polymorphism were associated with significantly increased risk of breast cancer (OR-1.7, 95% CI–1.00-3.18) and (OR-1.9, 95% CI-0.85-4.46) respectively. Conclusion: Our study suggests that rs2910164 GC and rs11614913 CT genotypes may contribute to breast cancer susceptibility in north Indian women.
背景
微小RNA(miRNA)是小的非编码RNA分子。它们可作为癌基因或肿瘤抑制基因发挥作用。前体miRNA区域存在的单核苷酸多态性(SNP)可能影响miRNA的加工,从而改变成熟miRNA的表达。迄今为止的研究对于两种常见多态性即hsa-miR-146 rs2910164和hsa-miR-196a2 rs11614913与乳腺癌的关联显示出相互矛盾的结果。目的:在本研究中,我们检测了印度北部女性乳腺癌患者中hsa-miR-146 rs2910164和hsa-miR-196a2 rs11614913 SNP与乳腺癌的关联。材料与方法:本研究纳入100例乳腺癌患者和100例对照,研究历时两年。采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术在外周血DNA样本中鉴定hsa-miR-146(rs2910164 G>C)和hsa-miR-196a2(rs11614913 C>T)的基因型。统计分析:我们使用优势比(OR)及95%置信区间评估miRNA多态性与乳腺癌的关联强度。结果:hsa-miR-196a2 rs11614913的杂合基因型以及hsa-miR-146 rs2910164与hsa-miR-196a2的联合多态性分别与乳腺癌风险显著增加相关(OR-1.7,95% CI–1.00-3.18)和(OR-1.9,95% CI-0.85-4.46)。结论:我们的研究表明,rs2910164 GC和rs11614913 CT基因型可能与印度北部女性乳腺癌易感性有关。