Targeted therapy resistance mediated by dynamic regulation of extrachromosomal mutant EGFR DNA

David A. Nathanson, Beatrice Gini, Jack Mottahedeh, Koppany Visnyei, Tomoyuki Koga, German Gomez, Ascia Eskin, Kiwook Hwang, Jun Wang, Kenta Masui, Andres Paucar, Huijun Yang, Minori Ohashi, Shaojun Zhu, Jill Wykosky, Rachel Reed, Stanley F. Nelson, Timothy F. Cloughesy, C. David James, P. Nagesh RaoHarley I. Kornblum, James R. Heath, Webster K. Cavenee, Frank B. Furnari, Paul S. Mischel*

*Corresponding author for this work

Research output: Contribution to journalArticle

208 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)72-76
Number of pages5
JournalScience
Volume343
Issue number6166
DOIs
StatePublished - Jan 1 2014

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Targeted therapy resistance mediated by dynamic regulation of extrachromosomal mutant EGFR DNA'. Together they form a unique fingerprint.

  • Cite this

    Nathanson, D. A., Gini, B., Mottahedeh, J., Visnyei, K., Koga, T., Gomez, G., Eskin, A., Hwang, K., Wang, J., Masui, K., Paucar, A., Yang, H., Ohashi, M., Zhu, S., Wykosky, J., Reed, R., Nelson, S. F., Cloughesy, T. F., James, C. D., ... Mischel, P. S. (2014). Targeted therapy resistance mediated by dynamic regulation of extrachromosomal mutant EGFR DNA. Science, 343(6166), 72-76. https://doi.org/10.1126/science.1241328