Multi-omics Analyses Reveal Mitochondrial Dysfunction Con-tributing to Temozolomide Resistance in Glioblastoma Cells

ABSTRACT: Glioblastoma (GBM) is the most common and aggressive malignant brain tumor with poor prognosis. Temozolomide (TMZ) is the standard chemotherapy for glioblastoma treatment, but TMZ resistance significantly compromises its efficacy. In the present study, we generated a TMZ-resistant cell line and identified that mitochondrial dysfunction was a novel factor contrib-uting to TMZ resistance though multi-omics analyses and energy metabolism analysis. Further-more, we found that rotenone treatment induced TMZ resistance to a certain level in glioblastoma cells. Notably, we further demonstrated that elevated Ca2+ levels and JNK–STAT3 pathway activa-tion contributed to TMZ resistance and that inhibiting JNK or STAT3 increases susceptibility to TMZ. Taken together, our results indicate that co-administering TMZ with a JNK or STAT3 inhibi-tor holds promise as a potentially effective treatment for glioblastoma.

ORGANISM(S): Homo Sapiens

SUBMITTER: Haiteng Deng  

PROVIDER: PXD045376 | iProX | Wed Sep 13 00:00:00 BST 2023

REPOSITORIES: iProX