DTX3L but not ARTD9 or ARTD8 mediates together with STAT1 cell migration of PC3 cells. (A-E) PC3-siMock, PC3-siDTX3L (A), PC3-siARTD9 (B), PC3-siARTD8 (C), PC3-siSTAT1 (D) single knockdown cells and PC3-siDTX3L/siSTAT1 (E) PC3-double knockdown cells were seeded into 6-well plates and treated as described in Material and Methods. At 0, 12, 24, and 36 h photographs were made and quantified as described in Material and Methods. Values represent the mean of three independent experiments and the error bars represent the SE. Statistical analysis was performed using the Student's t test. *P < 0.05, **P < 0.001 and ***P < 0.0001.