PTBP1 and infection: To further explore the mechanism of PTBP1 knockdown to initiate reprogramming of glioblastoma cells, we isolated total RNA from sh-Luci infected U251 cells three days post infection (sh-Luci-3d) and sh-PTBP1 infected U251 cells three and seven days post infection (sh-PTBP1-3, 7d) for sequencing.