Figure 5. The hsa_circ_0055202, hsa_circ_0074920 and hsa_circ_0043722 promoted cell proliferation of GBM cell lines. (A) Relative expression of hsa_circ_0055202, hsa_circ_0074920 and hsa_circ_0043722 in GBM cell lines. (B) Relative expression of hsa_circ_0055202, hsa_circ_0074920 and hsa_circ_0043722 in cells treated with shRNA. (C) CCK8 assay in cells treated with circRNA shRNA. * indicated P < 0.05, ** indicated P < 0.01.