Influence of up-regulation of Notch ligand DLL4 on biological behaviors of human gastric cancer cells

Figure 2 Up-regulation of Delta-like ligand 4 promoted cell proliferation in SGC7901 cells. Growth curve comparing SGC7901-Delta-like ligand 4 (DLL4), SGC7901-vector and SGC7901 cells over a 6-d time course. Up-regulation of DLL4 significantly promoted the proliferation of SGC7901 cells in vitro. Data are shown as the mean ± SD of three independent experiments (^aP < 0.05 vs the SGC7901-vector group); SGC7901-vector: SGC7901 cells transfected with an empty vector; SGC7901-DLL4: SGC7901 cells transfected with a vector encoding human DLL4 gene; Control: Non-transfected SGC7901 cells.