PMID- 15657358 OWN - NLM STAT- MEDLINE DCOM- 20050512 LR - 20211203 IS - 1535-7163 (Print) IS - 1535-7163 (Linking) VI - 4 IP - 1 DP - 2005 Jan TI - Combination therapy of inhibitors of epidermal growth factor receptor/vascular endothelial growth factor receptor 2 (AEE788) and the mammalian target of rapamycin (RAD001) offers improved glioblastoma tumor growth inhibition. PG - 101-12 AB - Malignant gliomas are highly lethal tumors that display striking genetic heterogeneity. Novel therapies that inhibit a single molecular target may slow tumor progression, but tumors are likely not dependent on a signal transduction pathway. Rather, malignant gliomas exhibit sustained mitogenesis and cell growth mediated in part through the effects of receptor tyrosine kinases and the mammalian target of rapamycin (mTOR). AEE788 is a novel orally active tyrosine kinase inhibitor that decreases the kinase activity associated with the epidermal growth factor receptor and, at higher concentrations, the vascular endothelial growth factor receptor 2 (kinase domain region). RAD001 (everolimus) is an orally available mTOR inhibitor structurally related to rapamycin. We hypothesized that combined inhibition of upstream epidermal growth factor receptor and kinase domain region receptors with AEE788 and inhibition of the downstream mTOR pathway with RAD001 would result in increased efficacy against gliomas compared with single-agent therapy. In vitro experiments showed that the combination of AEE788 and RAD001 resulted in increased rates of cell cycle arrest and apoptosis and reduced proliferation more than either agent alone. Combined AEE788 and RAD001 given orally to athymic mice bearing established human malignant glioma tumor xenografts resulted in greater tumor growth inhibition and greater increases in median survival than monotherapy. These studies suggest that simultaneous inhibition of growth factor receptor and mTOR pathways offer increased benefit in glioma therapy. FAU - Goudar, Ranjit K AU - Goudar RK AD - Department of Pathology, Duke University Medical Center, P.O. Box 2900, Durham, NC 27710, USA. FAU - Shi, Qing AU - Shi Q FAU - Hjelmeland, Mark D AU - Hjelmeland MD FAU - Keir, Stephen T AU - Keir ST FAU - McLendon, Roger E AU - McLendon RE FAU - Wikstrand, Carol J AU - Wikstrand CJ FAU - Reese, Elizabeth D AU - Reese ED FAU - Conrad, Charles A AU - Conrad CA FAU - Traxler, Peter AU - Traxler P FAU - Lane, Heidi A AU - Lane HA FAU - Reardon, David A AU - Reardon DA FAU - Cavenee, Webster K AU - Cavenee WK FAU - Wang, Xiao-Fan AU - Wang XF FAU - Bigner, Darell D AU - Bigner DD FAU - Friedman, Henry S AU - Friedman HS FAU - Rich, Jeremy N AU - Rich JN LA - eng GR - 1 P20 CA096890/CA/NCI NIH HHS/United States GR - CA11898/CA/NCI NIH HHS/United States GR - CA14236/CA/NCI NIH HHS/United States GR - CA94231-02/CA/NCI NIH HHS/United States GR - M01 RR 30/RR/NCRR NIH HHS/United States GR - NS047409/NS/NINDS NIH HHS/United States GR - NS20023/NS/NINDS NIH HHS/United States GR - NS30245-15/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Mol Cancer Ther JT - Molecular cancer therapeutics JID - 101132535 RN - 0 (Purines) RN - EC 2.7.- (Protein Kinases) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.1.1 (mTOR protein, mouse) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 2.7.10.1 (Receptors, Vascular Endothelial Growth Factor) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - F9JLR95I3I (AEE 788) SB - IM MH - Animals MH - Cell Division/*drug effects MH - Cell Line, Tumor MH - DNA Replication/drug effects MH - ErbB Receptors/antagonists & inhibitors MH - Glioma/drug therapy/*pathology MH - Humans MH - Mice MH - Mice, Nude MH - Protein Kinases/*metabolism MH - Purines/*therapeutic use MH - Receptors, Vascular Endothelial Growth Factor/antagonists & inhibitors MH - TOR Serine-Threonine Kinases MH - Transplantation, Heterologous EDAT- 2005/01/20 09:00 MHDA- 2005/05/13 09:00 CRDT- 2005/01/20 09:00 PHST- 2005/01/20 09:00 [pubmed] PHST- 2005/05/13 09:00 [medline] PHST- 2005/01/20 09:00 [entrez] AID - 4/1/101 [pii] PST - ppublish SO - Mol Cancer Ther. 2005 Jan;4(1):101-12.