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Polymorphism (rs16917496) at the miR-502 Binding Site of the Lysine Methyltransferase 5A (SET8) and Its Correlation with Colorectal Cancer in Iranians.


ABSTRACT: BACKGROUND:One of the gene expression regulatory mechanisms is mediated by small noncoding RNAs called microRNA (miRNA). They interact with a recognition sequence located mostly in 3'-untranslated regions (3'-UTRs) of mRNAs. Polymorphisms in miRNAs recognition sequences could affect gene expression which in turn may alter disease susceptibility. SET8, a member of the SET domain-containing methyltransferase, acts in a variety of biological processes such as genomic stability. Here, we report correlation of rs16917496 polymorphism, located in the recognition sequence of miR-502 within 3'-UTR of SET8, with colorectal cancer (CRC) in Iranians. MATERIALS AND METHODS:One hundred and seventy CRC patients and 170 noncancer counterparts were recruited in this case-control study. Genotyping of rs16917496 was performed using polymerase chain reaction-restriction fragment length polymorphism method. RESULTS:There was no significant association of rs16917496 with CRC in population under study (P value for genotype and allele distribution were >0.05). However, stratification analysis based on smoking status revealed that TT+TC genotypes of SET8 rs16917496 are strongly associated with increased risk of CRC (odds ratio: 5.8, 95% confidence interval: 1.37-24.34, P - 0.005) in smoker subgroup. CONCLUSION:Correlation of rs16917496 T allele with CRC in smokers is emphasizing the importance of individuals' genotype in the recruitment of adverse health hazards of smoking more profoundly for certain people compared to others.

SUBMITTER: Mosallayi M 

PROVIDER: S-EPMC5539672 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Polymorphism (rs16917496) at the miR-502 Binding Site of the Lysine Methyltransferase 5A (<i>SET8</i>) and Its Correlation with Colorectal Cancer in Iranians.

Mosallayi Meysam M   Simonian Miganoosh M   Khosravi Sharifeh S   Salehi Ahmad Reza AR   Khodadoostan Mahsa M   Sebghatollahi Vahid V   Baradaran Azar A   Salehi Rasoul R  

Advanced biomedical research 20170714


<h4>Background</h4>One of the gene expression regulatory mechanisms is mediated by small noncoding RNAs called microRNA (miRNA). They interact with a recognition sequence located mostly in 3'-untranslated regions (3'-UTRs) of mRNAs. Polymorphisms in miRNAs recognition sequences could affect gene expression which in turn may alter disease susceptibility. <i>SET8</i>, a member of the <i>SET</i> domain-containing methyltransferase, acts in a variety of biological processes such as genomic stability  ...[more]

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