LGALS1 and gastric cancer: Therefore, we hypothesized that galectin-1 in GC tissues promotes peritoneal metastasis by promoting peritoneal collagen deposition.In vitro, we treated HPMCs with CM from OE-LGALS1 GC cell lines,and we observed a significantly high expression of LGALS1 mRNA in the OE-LGALS1-CM-treated HPMCs.