objective: breast cancer is one of the most common malignancies in women worldwide. it is caused by a number of genetic and epigenetic factors. aberrant hypermethylation of the promoter regions in specific genes is a key event in the formation and progression of breast cancers as well as the dbc2 gene, as a tumor suppressor gene. different studies show that the dbc2 gene is inactivated through ...

csn1s1is one of the major genes encoding milk proteins of mammals. in this study we determined allele frequencies of csn1s1-5` flanking region as well as exon 17 variants and their effects on milk traits in three indigenous cattle breeds mazandarani, golpaygani (bos indicus) and sarabi (bos taurus) and holstein cattle in iran. csn1s1*b variant was nearly fixed in holstein but ranged from 0.40 t...

background & objective: interleukin (il)-10 is an important anti-inflammatory and immunomodulatory cytokine. some authors believe that single nucleotide polymorphisms (snp) in the promoter region of the il-10 gene have been associated with susceptibility to hiv infection and progression to aids, but its role is not clearly defined yet. the present study was undertaken to evaluate the associ...

background and objective: the dbc2 (deleted in breast cancer 2) or rhobtb2 (located on 8p21) is a tumor suppressor gene associated with tumorigenesis. mutational studies of dbc2 at its promoter region in breast cancer revealed an important role for epigenetic changes contributing to its low expression. epigenetic changes through hypermethylation of the promoter can cause the inactivation of dbc...

objectives this study evaluates the correlation between hbv infection and snp in il-10 gene promoter. patients and methods ninety-six hbv-infected patients (32 chronic hepatitis b infection patients, 34 healthy carriers, 30 spontaneously recovered cases) and 31 healthy controls were enrolled. three biallelic (-819,-592,-1082) regions in the il-10 gene promoter were sequenced for all patients. r...

The plasmid pALCA1SIFN containing cDNA that encodes the human interferon a-2b was obtained from the ATCC(no. 531667). In this system the expression of the gene is under the control of an alcA promoter. alcA p is a specific promoter for expression of different genes in Aspergillusfilamentous. In this plasmid the coding region of IFN?-2b is preceded by the coding region of a synthetic signal ...

e-cadherin is among tumor suppressor genes which mostly subjects to the down-regulation in squamous cell carcinoma of esophagus (scce). the gene is tightly associated with the tumor invasion and metastasis in multiple human cancers, especially scce. cpg islands’ methylation in the promoter region of e-cadherin is among the mechanisms that have been suggested for the e-cadherin silencing, howeve...