Impact of Genetic Variants in Mir-122 Gene and its Flanking Regions on Hepatitis B Risk
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Sadegh Fattahi1 , Mohammad Karimi Alivije2 , Farhang Babamahmoodi3 , Masomeh Bayani4 , Mahmoud Sadeghi-Haddad-Zavareh4 , Mohsen Asouri1 , Maryam Lotfi1 , Galia Amirbozorgi1 , Morteza Gholami1 , Haleh Akhavan-Niaki * 5 |
1- Cellular and Molecular Department 2- Department of Infectious Diseases 3- Department of Antimicrobial Resistance Research Center 4- Infectious Diseases and Tropical Medicine Research Center 5- Department of Genetics , Halehakhavan@yahoo.com |
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Abstract: (9568 Views) |
MicroRNAs are small non coding RNAs that are involved in gene expression regulation. Mir-122 was reported to inhibit hepatitis B virus (HBV), but little is known about the role of mir-122 polymorphisms on HBV infection development. This present study aimed to investigate the association between single nucleotide polymorphisms (SNPs) in mir-122 gene region with HBV infection. Study cases were HBV positive and negative individuals. 67 SNPs in mir-122 gene and its flanking regions were analyzed by sequencing method. mirVas software was used to assay the impact of polymorphisms on the secondary structure of mir-122 gene. 66 out of 67 studied SNPs were monomorphic and rs 17669 was the only polymorphic SNP in the studied population, with the T allele being four times more frequent than the C allele. However, there was no significant difference in alleles distribution between patient and control groups. Rs 17669 variant located near the mir-122 gene showed the highest impact for centroid, maximal expected accuracy, and minimal free energy structures in the arm, flank, and flank regions of mir-122, respectively. Therefore, rs17669 variant was predicted to exert an effect on mir-122 stability. The study of larger samples from different ethnicities may help to find a possible association between rs17669 genotype and HBV infection. |
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Keywords: Mir-122, HBV, single nucleotide polymorphism, rs17669, mirVas |
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Full-Text [PDF 668 kb]
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Type of Study: Original Article |
Subject:
Other Received: 2016/11/27 | Accepted: 2016/12/29 | Published: 2017/01/14
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