PREVALENCE OF -56C/T REGULATORY POLYMORPHISM IN INTERFERON-γ RECEPTOR 1 PROMOTER REGION KNOWN TO BE POTENTIAL RISK FACTOR FOR HEPATITIS B VIRUS INFECTION IN NORTH INDIAN HEALTHY POPULATIONAbstract
Interferon-γ (IFN-γ), a defense molecule, mediates its response against viral infections like Hepatitis B virus by binding to interferon gamma receptor 1 (IFNGR1) on cytotoxic T lymphocytes (CTLs). Hence, interferon gamma receptor 1 (IFNGR1) gene expression is vital in the eradication of the HBV virus. It has been demonstrated by some studies that -56C/T SNPs in IFNGR1 gene promoter region can be correlated with HBV-infection resistance or susceptibility. It has also been shown that -56C SNP has protective effect against HBV infection in comparison to -56T SNP. This motivate us to find out the percentage prevalence of -56C/T SNPs in our healthy population. Genomic DNA was extracted using standard phenol-chloroform method from healthy blood donors. PCR was performed to amplify the 491 bp region of IFNGR1 gene promoter region and digested with AfeI restriction enzyme to observe the -56C/T SNPs. Allele ‘T’ has been observed as the overall dominant allele (65.71%) in our both male (71.79%) and female (58.06%) healthy population.
Vikas Pahal *, Rohit Randhawa and Krishan Swaroop Dadhich
Department of Microbiology, Dolphin (PG) College of Science and Agriculture, Chunnikalan, F.G. Sahib, Punjab, India
08 February, 2016
16 March, 2016
15 May, 2016
01 July 2016