These polysaccharides have great potential as novel agents against tumor metastasis via the p38/MAPK and PI3K/Akt/mTOR signaling pathways, the mitochondrial apoptosis pathway, the EGF-EGFR and MMP2 pathways, and the FBXW7/miR-27a and P53 pathways. The gene discussed is MTOR; the disease is neoplasm.