Alternative polyadenylation site analysis of tumor-related genes based on 3'RACE in gastric cancer cells / 南方医科大学学报

ABSTRACT

<p><b>OBJECTIVE</b>To analyze the alteration in alternative polyadenylation (APA) sites of tumor-related genes in gastric cancer cells.</p><p><b>METHODS</b>We used 3'RACE to capture the APA sites of two tumor-related genes (HSP90α and SEC11A) in gastric cancer cell lines MKN45, MKN28 and AGS, and compared the results with annotated poly(A) sites in UCSC database.</p><p><b>RESULTS</b>We found new APA sites in the two tumor-related genes in gastric cancer cells to produce new mRNA isoforms with different 3'UTRs.</p><p><b>CONCLUSIONS</b>There are new mRNA isoforms of HSP90α and SEC11A derived from ATA in gastric cancer cells, which provides new insights into the mechanisms of gastric tumorigenesis.</p>