PMID- 12067969 OWN - NLM STAT- MEDLINE DCOM- 20020719 LR - 20220318 IS - 0008-5472 (Print) IS - 0008-5472 (Linking) VI - 62 IP - 12 DP - 2002 Jun 15 TI - Mutant epidermal growth factor receptor up-regulates molecular effectors of tumor invasion. PG - 3335-9 AB - The gene most commonly altered in human glioblastomas is the epidermalgrowth factor receptor (EGFR). We profiled transcripts induced by mutantEGFR to better understand its role in tumor progression. The pattern found suggested enhanced tumor invasion. The highly induced genes included extracellular matrix components, metalloproteases, and a serine protease. We confirmed that mutant EGFR did make glioblastoma cells both more motile and invasive using in vitro assays. Furthermore, inhibitors of EGFR (OSI-774 and Tyrphostin AG1478) selectively down-regulated these molecular effectors in glioblastoma cells, eliminating enhanced invasion. FAU - Lal, Anita AU - Lal A AD - Department of Pathology, Duke University Medical Center, Durham, North Carolina 27710, USA. FAU - Glazer, Chad A AU - Glazer CA FAU - Martinson, Holly M AU - Martinson HM FAU - Friedman, Henry S AU - Friedman HS FAU - Archer, Gary E AU - Archer GE FAU - Sampson, John H AU - Sampson JH FAU - Riggins, Gregory J AU - Riggins GJ LA - eng GR - CA88128/CA/NCI 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 - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (Enzyme Inhibitors) RN - 0 (Extracellular Matrix Proteins) RN - 0 (Quinazolines) RN - 0 (Tyrphostins) RN - 0 (epidermal growth factor receptor VIII) RN - 170449-18-0 (RTKI cpd) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 3.4.21.- (Serine Endopeptidases) RN - EC 3.4.24.- (Metalloendopeptidases) SB - IM MH - Animals MH - Enzyme Inhibitors/pharmacology MH - ErbB Receptors/antagonists & inhibitors/biosynthesis/genetics/*physiology MH - Extracellular Matrix Proteins/biosynthesis/*genetics MH - Gene Expression Profiling MH - Gene Expression Regulation, Neoplastic/drug effects MH - Glioblastoma/*genetics/metabolism/pathology MH - Humans MH - Metalloendopeptidases/biosynthesis/genetics MH - Mice MH - Mice, Nude MH - Neoplasm Invasiveness MH - Quinazolines MH - Reverse Transcriptase Polymerase Chain Reaction MH - Serine Endopeptidases/biosynthesis/genetics MH - Transfection MH - Tumor Cells, Cultured MH - Tyrphostins/pharmacology MH - Up-Regulation EDAT- 2002/06/18 10:00 MHDA- 2002/07/20 10:01 CRDT- 2002/06/18 10:00 PHST- 2002/06/18 10:00 [pubmed] PHST- 2002/07/20 10:01 [medline] PHST- 2002/06/18 10:00 [entrez] PST - ppublish SO - Cancer Res. 2002 Jun 15;62(12):3335-9.