PMID- 24310612 OWN - NLM STAT- MEDLINE DCOM- 20140123 LR - 20211021 IS - 1095-9203 (Electronic) IS - 0036-8075 (Print) IS - 0036-8075 (Linking) VI - 343 IP - 6166 DP - 2014 Jan 3 TI - Targeted therapy resistance mediated by dynamic regulation of extrachromosomal mutant EGFR DNA. PG - 72-6 LID - 10.1126/science.1241328 [doi] AB - Intratumoral heterogeneity contributes to cancer drug resistance, but the underlying mechanisms are not understood. Single-cell analyses of patient-derived models and clinical samples from glioblastoma patients treated with epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) demonstrate that tumor cells reversibly up-regulate or suppress mutant EGFR expression, conferring distinct cellular phenotypes to reach an optimal equilibrium for growth. Resistance to EGFR TKIs is shown to occur by elimination of mutant EGFR from extrachromosomal DNA. After drug withdrawal, reemergence of clonal EGFR mutations on extrachromosomal DNA follows. These results indicate a highly specific, dynamic, and adaptive route by which cancers can evade therapies that target oncogenes maintained on extrachromosomal DNA. FAU - Nathanson, David A AU - Nathanson DA AD - Ludwig Institute for Cancer Research, University of California at San Diego, La Jolla, CA, USA. FAU - Gini, Beatrice AU - Gini B FAU - Mottahedeh, Jack AU - Mottahedeh J FAU - Visnyei, Koppany AU - Visnyei K FAU - Koga, Tomoyuki AU - Koga T FAU - Gomez, German AU - Gomez G FAU - Eskin, Ascia AU - Eskin A FAU - Hwang, Kiwook AU - Hwang K FAU - Wang, Jun AU - Wang J FAU - Masui, Kenta AU - Masui K FAU - Paucar, Andres AU - Paucar A FAU - Yang, Huijun AU - Yang H FAU - Ohashi, Minori AU - Ohashi M FAU - Zhu, Shaojun AU - Zhu S FAU - Wykosky, Jill AU - Wykosky J FAU - Reed, Rachel AU - Reed R FAU - Nelson, Stanley F AU - Nelson SF FAU - Cloughesy, Timothy F AU - Cloughesy TF FAU - James, C David AU - James CD FAU - Rao, P Nagesh AU - Rao PN FAU - Kornblum, Harley I AU - Kornblum HI FAU - Heath, James R AU - Heath JR FAU - Cavenee, Webster K AU - Cavenee WK FAU - Furnari, Frank B AU - Furnari FB FAU - Mischel, Paul S AU - Mischel PS LA - eng GR - T32 GM008042/GM/NIGMS NIH HHS/United States GR - R01-NS080939/NS/NINDS NIH HHS/United States GR - P01 CA095616/CA/NCI NIH HHS/United States GR - U54 CA151819/CA/NCI NIH HHS/United States GR - NS73831/NS/NINDS NIH HHS/United States GR - R01 NS080939/NS/NINDS NIH HHS/United States GR - P01-CA95616/CA/NCI NIH HHS/United States GR - U54 CA119347/CA/NCI NIH HHS/United States GR - R01 NS052563/NS/NINDS NIH HHS/United States GR - R01 NS073831/NS/NINDS NIH HHS/United States GR - T32 CA009056/CA/NCI NIH HHS/United States GR - P30 CA023100/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20131205 PL - United States TA - Science JT - Science (New York, N.Y.) JID - 0404511 RN - 0 (Antineoplastic Agents) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Quinazolines) RN - 9007-49-2 (DNA) RN - DA87705X9K (Erlotinib Hydrochloride) RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Animals MH - Antineoplastic Agents/*therapeutic use MH - Central Nervous System Neoplasms/*drug therapy/genetics MH - DNA/genetics MH - Drug Resistance, Neoplasm/*genetics MH - ErbB Receptors/antagonists & inhibitors/*genetics MH - Erlotinib Hydrochloride MH - Glioblastoma/*drug therapy/genetics MH - Humans MH - Mice MH - *Molecular Targeted Therapy MH - Mutation MH - Neoplasm Transplantation MH - Protein Kinase Inhibitors/*therapeutic use MH - Quinazolines/therapeutic use MH - Single-Cell Analysis MH - Tumor Cells, Cultured MH - Withholding Treatment PMC - PMC4049335 MID - NIHMS572551 EDAT- 2013/12/07 06:00 MHDA- 2014/01/24 06:00 PMCR- 2015/01/03 CRDT- 2013/12/07 06:00 PHST- 2013/12/07 06:00 [entrez] PHST- 2013/12/07 06:00 [pubmed] PHST- 2014/01/24 06:00 [medline] PHST- 2015/01/03 00:00 [pmc-release] AID - science.1241328 [pii] AID - 10.1126/science.1241328 [doi] PST - ppublish SO - Science. 2014 Jan 3;343(6166):72-6. doi: 10.1126/science.1241328. Epub 2013 Dec 5.