Figure 6. Construction of the OTUB2 knockdown cell and the functional experiment. (A) OTUB2 was successfully knocked down in MCF-7 and YCCB1 cells using lentiviral transfection method. (B) The CCK8 experiment showed that the number of OTUB2 knockdown cells decreased compared to sh-NC cells at various time points. (C) The clone formation experiment suggests that OTUB2 knockdown cells may have weaker formation ability than sh-NC cells. (D) Transwell experiment observed the changes in migration and invasion ability of OTUB2 knockdown cells compared to sh-NC cells. (E) Cell cycle distribution of OTUB2 knockdown cells and sh-NC cells were detected by flow cytometry.