We also detected the antitumor effect of human monocytes on gene modified ovarian cells by MTT: There were 3 experimental groups including SKOV3/MCP-1, SKOV3/tk-MCP-1

and SKOV3/neo. Mononuclear cells were used as effectors, and tumor cells above-mentioned were used as target. Cells were seeded in the 96-well plates at the density of 5 × 103 Selleck OICR-9429 cells/well. Then mononuclear were added at different ratio of effector to this website target (20:1, 10:1, 5:1), incubated at 37°C in 5% CO2 incubator for 4 days, cytotoxicity were determined. The surviving rate of mixed tumor cell under the action of GCV only was determined by MTT. Briefly, there were 3 experimental groups (including SKOV3/tk, SKOV3/tk-MCP-1 and SKOV3/neo). The above cells infected by different gene at different proportion (100%, 90%, 70%, 50%, 30%, 10%, 0) were mixed with wild SKOV3, and then were added in 10 μg/ml GCV

The surviving rate of cells were determined by MTT incubated in 96-well plates for 4 days at 37°C in 5% CO2 incubator. Next we detect the surviving rate of mixed tumor cell under the action of GCV plus human monocytes by MTT. Each kind of cells and wild SKOV3 were seeded in 96-well plates as the same way. Then 5 × 104 human monocytes were added at the ratios of 10:1(effectors: target). All cells were incubated for 4 days at 37°C in 5% CO2 incubator after supplied 10 μg/ml GCV. Cells without GCV were used as control group. Detection of cell apoptosis rate, cell cycle and the expression of CD25 (IL-2R) and CD44v6 by flow cytometer: SKOV3/tk, SKOV3/tk-MCP-1 and SKOV3/neo were seeded in 25 cm flask. After cells adherenced, we added human monocytes at the ratios of 10:1(effectors: target) and Cell Cycle inhibitor 0.5 μg/ml GCV, and then incubated cells for 48 h at 37°C in 5% CO2 incubator. Animal experiments The present study was approved by the local animal Care Committee and is in compliance with Chinese laws for animal protection. 6 to 8 weeks old, weight-matched female combined immune deficiency mice (C.B17/SCID) were purchased from Weitonglihua experimental animal limited company. Animals were housed in the animal facility of

the Medical College of Shandong university Thiamet G of China. Enzyme-linked immunosorbent assay (ELISA) for the IgG of C.B17/SCIDs in serum was performed to eliminate immune leakage according to the manufacturer’s protocol. Human mononuclear cells were isolated from human peripheral blood mononuclear cells by Ficoll-Hypaque discontiguous density gradient centrifugation technique and were re-suspended in fresh RPMI 1640 medium without NBS at a density of 8 × 107cells/ml. 0.5 ml cell suspension was injected into abdominal cavity of per C.B17/SCID for immunologic reconstitution. Twenty-four hours after celiac immunologic reconstitution, SKOV3/neo, SKOV3/tk, SKOV3/MCP-1 and SKOV3/tk-MCP-1 cell lines were inoculated by intraperitoneal injection at a density of 2 × 107 cell/SCID. According to the cells inoculated, all experimental C.B17/SCIDs were divided into 4 groups, i.e.