biostudies-literatureUnknown13Xiang XChemotherapy serves as the first choice in clinic to treat advanced gastric cancer. However, emerging evidence indicated the induction of drug resistance and cancer stem cells occasionally by chemotherapy, which seriously limit the therapeutic effects, but the regulatory mechanism remains unclear. Here we treated two human gastric cancer cell lines SGC7901 and BGC823 with 5-Fluorouracil (5-Fu) or Cisplatin (DDP) in vitro. The survived cells showed significant increase of drug resistance, cell stemness and cytokine GM-CSF expression and secretion. As such, GM-CSF was applied to stimulate gastric cancer cells, followed by the subpopulation of CD133 + CSC analysis, sphere formation assay and stemness genes expression analysis. As a result, CSCs sFrontiers in pharmacology855351https://www.ebi.ac.uk/biostudies/studies/S-EPMC9117965biostudies-literatureGM-CSF-miRNA-Jak2/Stat3 Signaling Mediates Chemotherapy-Induced Cancer Cell Stemness in Gastric Cancer.PMC9117965Chen YQMa HZMa SXXiang XLiu DMWang HJCai HZhang DZYuan YfalseGM-CSF-miRNA-Jak2/Stat3 Signaling Mediates Chemotherapy-Induced Cancer Cell Stemness in Gastric Cancer.Chemotherapy serves as the first choice in clinic to treat advanced gastric cancer. However, emerging evidence indicated the induction of drug resistance and cancer stem cells occasionally by chemotherapy, which seriously limit the therapeutic effects, but the regulatory mechanism remains unclear. Here we treated two human gastric cancer cell lines SGC7901 and BGC823 with 5-Fluorouracil (5-Fu) or Cisplatin (DDP) in vitro. The survived cells showed significant increase of drug resistance, cell stemness and cytokine GM-CSF expression and secretion. As such, GM-CSF was applied to stimulate gastric cancer cells, followed by the subpopulation of CD133 + CSC analysis, sphere formation assay and stemness genes expression analysis. As a result, CSCs s2022-01-01T00:00:00Z20222025-04-04T12:56:53.654Z2025-04-04T12:56:53.654ZS-EPMC91179653560088210.3389/fphar.2022.855351