Abstract
Elaiophylin is known to exert antitumor effects through certain signaling pathways; however, no reports regarding its effects on esophageal cancer are available. This study explored the effects of elaiophylin in esophageal squamous cell carcinoma (ESCC) cells. Transwell and immunofluorescence assays confirmed that elaiophylin inhibited the migration and proliferation of ESCC cells, and western blotting assays showed that it affected apoptosis-related gene expression in ESCC cells. Based on RNA-seq analyses, Single-cell RNA-seq, a human cancer pathway phosphorylation antibody array, and Gene Ontology and Kyoto Encyclopedia of Genes and Genomics analyses, we found that elaiophylin was related to low expression of EIF4B and activation of the phosphoinositide 3-kinase (PI3K)/AKT signaling pathway. In both in vitro and in vivo experiments, ESCC cells treated with elaiophylin showed low EIF4B expression, which inhibited their proliferation and promoted apoptosis by activating the PI3K/AKT signaling pathway; EIF4B overexpression could reverse these effects of elaiophylin on ESCC cells. Therefore, our results indicate that elaiophylin targets EIF4B to inhibit ESCC cell proliferation via the PI3K/AKT signaling pathway. Targeting elaiophylin or the EIF4B/PI3K/AKT signaling pathway may produce new methods for ESCC treatment.
Published Version
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