PMID- 16709038 OWN - NLM STAT- MEDLINE DCOM- 20060818 LR - 20211203 IS - 1092-0684 (Electronic) IS - 1092-0684 (Linking) VI - 20 IP - 4 DP - 2006 Apr 15 TI - Autophagy, the Trojan horse to combat glioblastomas. PG - E7 AB - Malignant gliomas, among which glioblastomas constitute the largest group, are characterized by a dramatically diffuse infiltration into the brain parenchyma with, as a consequence, the fact that no patient with glioblastoma multiforme (GBM) has been cured to date. Migrating GBM cells are resistant to apoptosis (Type I programmed cell death), and thus to radiotherapy and conventional chemotherapy, because of the constitutive activation of several intracellular signaling pathways, of which the most important identified to date are the pathways controlled by phosphatidylinositol 3-kinase, Akt, and the mammalian target of rapamycin (mTOR). Migrating GBM cells seem to be less prone to resist autophagy (Type II programmed cell death), and disruption of the pathway controlled by mTOR induces marked autophagic processes in GBM cells. Temozolomide is the most efficacious cytotoxic drug employed today to combat glioblastoma, and this drug exerts its cytotoxic activity through proautophagic processes. Thus, autophagy represents a kind of Trojan horse that can be used to bypass, at least partly, the dramatic resistance of glioblastoma to radiotherapy and proapoptotic-related chemotherapy. FAU - Lefranc, Florence AU - Lefranc F AD - Department of Neurosurgery, Erasme University Hospital, Belgium. fllefran@ulb.ac.be FAU - Kiss, Robert AU - Kiss R LA - eng PT - Journal Article PT - Review DEP - 20060415 PL - United States TA - Neurosurg Focus JT - Neurosurgical focus JID - 100896471 RN - 0 (Antineoplastic Agents, Phytogenic) RN - 7GR28W0FJI (Dacarbazine) RN - EC 2.7.- (Protein Kinases) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - YF1K15M17Y (Temozolomide) SB - IM MH - Antineoplastic Agents, Phytogenic/pharmacology MH - Autophagy/*drug effects/*physiology MH - Brain Neoplasms/*drug therapy/metabolism/physiopathology MH - Cell Movement/drug effects/physiology MH - Dacarbazine/*analogs & derivatives/pharmacology MH - Drug Resistance, Neoplasm/physiology MH - Glioblastoma/*drug therapy/metabolism/physiopathology MH - Humans MH - Protein Kinases/drug effects/genetics/metabolism MH - Signal Transduction/drug effects/physiology MH - TOR Serine-Threonine Kinases MH - Temozolomide RF - 37 EDAT- 2006/05/20 09:00 MHDA- 2006/08/19 09:00 CRDT- 2006/05/20 09:00 PHST- 2006/05/20 09:00 [pubmed] PHST- 2006/08/19 09:00 [medline] PHST- 2006/05/20 09:00 [entrez] AID - 200407 [pii] AID - 10.3171/foc.2006.20.4.4 [doi] PST - epublish SO - Neurosurg Focus. 2006 Apr 15;20(4):E7. doi: 10.3171/foc.2006.20.4.4.