TEM results revealed that autophagic vacuoles gradually increased after adding PECT to U251 cells from 0 h to 48 h (Figure 2C); simultaneously, LC3B-II and LAMP2 protein expression increased and p62 protein expression decreased (Figure 2E), indicating that PECT increased autophagic vacuoles in GBM cells by increasing autophagic flux. Here, LAMP2 is linked to glioblastoma.