Immunophenotypic surface marker analysis was performed on a
FACS Canto II (BD, Heidelberg, Germany) upon staining with the following antibodies as described before: CD29-phycoerythrin (PE, clone MAR4; BD),
CD34-APC (clone 8G12; BD),
CD45-APC (clone HI30; BD),
CD90-APC (clone 5E10; BD).
For adipogenic differentiation, MSC were cultured in medium supplemented with 1 mM dexamethasone, 10 mg/L insulin, 50 mM IBMX, and 0.2 mM indometacin. Twenty days after induction, cells were fixed with 40 g/L paraformaldehyde and lipid droplets were visualized by staining with Oil Red O solution [45 (
link)]. Fluorescence microscopic pictures were taken from four randomly chosen areas with a Leica DM IL HC microscope (Leica, Wetzlar, Germany).
Osteogenic differentiation was induced with culture medium supplemented with 1 mM dexamethasone, 1 M β-sodium glycerophosphate, and 50 mM ascorbic acid and with medium changes every 3–4 days. After 40 days, osteogenic differentiation was analyzed by alkaline phosphatase staining. Alkaline phosphatase granules located in the cytoplasm stained intensively and the color was darker than the cell. Fluorescence microscopic pictures were taken from four randomly chosen areas with a Leica DM IL HC microscope (Leica Microsystems, Wetzlar, Germany).
Sun Y.P., Zhang B.L., Duan J.W., Wu H.H., Wang B.Q., Yu Z.P., Yang W.J., Shan Y.F., Zhou M.T, & Zhang Q.Y. (2014). Effect of NK4 Transduction in Bone Marrow-Derived Mesenchymal Stem Cells on Biological Characteristics of Pancreatic Cancer Cells. International Journal of Molecular Sciences, 15(3), 3729-3745.