ABSTRACT
BACKGROUND:The complex relationship between bone marrow mesenchymal stem cels and cancers severely limit the clinical application of mesenchymal stem cels. So it is urgent to study the role of mesenchymal stem cels in tumor growth and metastasis. OBJECTIVE:To explore the effect of human bone marrow mesenchymal stem cels on epithelial mesenchymal transition in non-smal cel lung cancer A549 and PAa cels. METHODS:The A549 and PAa cels were cultured with mesenchymal stem cel supernatant (mesenchymal stem cel conditioned medium, MSCs-CM). The celular morphology was observed under a microscope. The mRNA and protein expression of E-cadherin, N-cadherin, Vimentin, Slug, Snail, and Twist were determined by RT-PCR and western blot. Transwel and wound healing assay were used to detect the change of migration and metastatic ability. RESULTS AND CONCLUSION:Compared with the control group, the celular morphology of experimental group showed mesenchymal-like changes. In response to MSCs-CM, there was decreased E-cadherin but increased N-cadherin, Vimentin and Slug, Snail, Twist at mRNA and protein levels compared with the control group (P < 0.05). The migration and metastatic abilities of the experimental group were also increased. So, human bone marrow mesenchymal stem cels can promote epithelial mesenchymal transition in A549 and PAa cels, and enhance the migration and metastatic abilities of A549 and PAa cels.