Relative cell viability and cell apoptosis rate under radiation therapy after transfection. Relative cell viability under 0-10 Gy radiation treatment (A), cell apoptosis rate under 6 Gy radiation treatment (B, C), among groups in U-87 MG cells. Relative cell viability under 0-10 Gy radiation treatment (D), cell apoptosis rate under 6 Gy radiation treatment (E, F), among groups in U-251 MG cells. AKIP1, A-kinase-interacting protein 1; NC, negative control; TMZ, temozolomide.