Abstract
Gene amplified in esophageal cancer 1 (GAEC1) expression and copy number changes are frequently associated with the pathogenesis of colorectal carcinomas. The current study aimed to identify the pathway and its transcriptional factors with which GAEC1 interacts within colorectal cancer, to gain a better understanding of the mechanics by which this gene exercises its effect on colorectal cancer. Two colonic adenocarcinoma cell lines (SW48 and SW480) and a nonneoplastic colon epithelial cell line (FHC) were transfected with GAEC1 to assess the oncogenic potential of GAEC1 overexpression. Multiple in vitro assays, including cell proliferation, wound healing, clonogenic, apoptosis, cell cycle, and extracellular flux, were performed. Western blot analysis was performed to identify potential gene-interaction partners of GAEC1 in vitro. Results showed that the overexpression of GAEC1 significantly increased cell proliferation, migration, and clonogenic potential ( P < 0.05) of colonic adenocarcinoma. Furthermore, GAEC1 portrayed its ability to influence mitochondrial respiration changes. The observations were in tandem with a significant increase in the expression of phosphorylated protein kinase B, forkhead box O3, and matrix metallopeptidase 9. Thus, GAEC1 has a role in regulating gene pathways, potentially in the Akt pathway. This could help in developing targeted therapies in the future.
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