Astragalus Polysaccharide Suppresses Cell Proliferation and Invasion by Up-Regulation of miR-195-5p in Non-small Cell Lung Cancer.

Non-small cell lung cancer (NSCLC) accounts for approximately 85% of lung cancer-related mortality, and it has a high risk of early recurrence and distant metastasis. The prerequisite for the deterioration of NSCLC is the malignant proliferation and migration of cancer cells, and in this study Astragalus membranaceus polysaccharides (APS) was firstly showed that it could decrease the cell proliferation of A549 and NCI-H1299. Through bioinformatics analysis, the up-regulation of miR-195-5p was positively correlated with the survival rate of lung cancer patients. Real-time PCR indicated APS could increase the expression level of miR-195-5p, and the miR-195-5p inhibitor was used to verify that it could reverse the inhibitory effect of Astragalus polysaccharide on lung cancer cell migration and invasion. Therefore, we believe that APS could inhibit the proliferation and migration of NSCLC cells by regulating miR-195-5p, which laid the foundation for further research on the functional mechanism of miR-195-5p in NSCLC.