Cis-Regulatory Elements of the Gastric cancer genes (CDH1 & CTNNA1) An in-silico Analysis Research

Abstract

Diffuse gastric cancers typically present as late-stage tumours and, as a result, the 5year survival rate is poor. Some gastric cancers are hereditary and these tend to be of the diffuse type; 30-40% of hereditary diffuse gastric cancers (HDGCs) can be explained by defective germline alleles of E-cadherin (CDH1), but for the remaining families the factors driving susceptibility remain unknown. We had access to a large HDGC pedigree with no obvious mutation in CDH1, and applied exome sequencing to identify new genes involved in gastric cancer. We identified a germline truncating allele of α-E-catenin (CTNNA1) that was present in two family members with invasive diffuse gastric cancer and four in which intra mucosal signet ring cells were detected as part of endoscopic surveillance.

In this study we aimed to analyse the association of the cis regulatory elements (CREs) of CDH1&CTNNA1using cell lines of the stomach carcinoma. We used encode project ,string database, Online Mendelian Inheritance in Man (OMIM), DB SUPER , Single nucleotide polymorphisms (SNPs) and SPSS19 statistical software. The result has displayed more than 2000+ nearby genes. A further in-depth analysis of the association of the nearby genes, nearby cis-regulatory elements and nearby SNPs in the process for further understanding of the role of CREs in CDH1 &CTNNA1expression in the stomach tissues.