[Effect of conditioned medium of mesenchymal stem cells on proliferation, migration and adhesion of human umbilical vein endothelial cells].

The aim of this study was to explore the effect of mesenchymal stem cell (MSC) conditioned medium (MSC-CM) on proliferation, migration and adhesion of human umbilical vein endothelial cell (CRL1730) and its mechanism. Isolation and purification of MSC were performed with the classic adhering method, the surface markers (CD29, CD90, CD45 and CD34) in MSC were detected by flow cytometry. MSC were treated and cultured for 3 d, the MSC-CM or MSC overexpressing stem cell-derived factor-1 (SDF-1) conditioned medium (Ad-SDF-1-MSC-CM) were collected. Subsequently, CRL1730 cells were treated respectively with 2% FBS-DMEM, 15% FBS-DMEM (control group), MSC-CM or Ad-SDF-1-MSC-CM for 24 h, the proliferation of CRL1730 cells was detected by MTT method. CRL1730 cell migration in vitro was performed by using wound healing system. The adhesion ability of CRL1730 cells was analyzed by microscope. The results indicated that the CRL1730 cells treated with Ad-SDF-1-MSC-CM showed greater proliferative capacity than CRL1730 cells treated with MSC-CM. While adding with AMD3100 5 µmol/L, the blocker of CXCR4, the CRL1730 proliferation mediated by Ad-SDF-1-MSC-CM was significantly reduced. Meanwhile, compared with MSC-CM, Ad-SDF-1-MSC-CM had greater effects for promoting CRL1730 migration and enhancing adhesion ability of CRL1730 cells, these effects were significantly inhibited by AMD3100. It is concluded that MSC-CM promotes the migration and adhesion ability of CRL1730 cells through SDF-1 expressed by MSC.