Figure 2.

CDK4 promotes the proliferation and spheroid formation of glioblastoma cells. A, U87 cells were transfected with the indicated plasmids and cell proliferation was monitored by a CCK‐8 assay. B, U251 cells were transfected with the indicated plasmids, and cell proliferation was monitored by a CCK‐8 assay. C, U87 cells were transfected with the indicated siRNA, and cell proliferation was monitored by a CCK‐8 assay. D, U251 cells were transfected with the indicated siRNA, and cell proliferation was monitored by a CCK‐8 assay. E, U87 cells were cultured in a nanoculture plate and then transfected with the indicated plasmids. Spheroid formation was monitored under a microscope. F, U87 cells were cultured in a nanoculture plate and then transfected with the indicated siRNA. Spheroid formation was monitored under a microscope