PMID- 27861144 OWN - NLM STAT- MEDLINE DCOM- 20180222 LR - 20220603 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 7 IP - 52 DP - 2016 Dec 27 TI - Inhibition of oxidative phosphorylation suppresses the development of osimertinib resistance in a preclinical model of EGFR-driven lung adenocarcinoma. PG - 86313-86325 LID - 10.18632/oncotarget.13388 [doi] AB - Metabolic plasticity is an emerging hallmark of cancer, and increased glycolysis is often observed in transformed cells. Small molecule inhibitors that target driver oncogenes can potentially inhibit the glycolytic pathway. Osimertinib (AZD9291) is a novel EGFR tyrosine kinase inhibitor (TKI) that is potent and selective for sensitising (EGFRm) and T790M resistance mutations. Clinical studies have shown osimertinib to be efficacious in patients with EGFRm/ T790M advanced NSCLC who have progressed after EGFR-TKI treatment. However experience with targeted therapies suggests that acquired resistance may emerge. Thus there is a need to characterize resistance mechanisms and to devise ways to prevent, delay or overcome osimertinib resistance. We show here that osimertinib suppresses glycolysis in parental EGFR-mutant lung adenocarcinoma lines, but has not in osimertinib-resistant cell lines. Critically, we show osimertinib treatment induces a strict dependence on mitochondrial oxidative phosphorylation (OxPhos), as OxPhos inhibitors significantly delay the long-term development of osimertinib resistance in osimertinib-sensitive lines. Accordingly, growth conditions which promote a less glycolytic phenotype confer a degree of osimertinib resistance. Our data support a model in which the combination of osimertinib and OxPhos inhibitors can delay or prevent resistance in osimertinib-naive tumour cells, and represents a novel strategy that warrants further pre-clinical investigation. FAU - Martin, Matthew J AU - Martin MJ AD - AstraZeneca Oncology, Innovative Medicines, Alderley Park, Macclesfield, Cheshire, United Kingdom. AD - AstraZeneca Oncology, Innovative Medicines, CRUK Cambridge Institute, Cambridge, United Kingdom. FAU - Eberlein, Cath AU - Eberlein C AD - AstraZeneca Oncology, Innovative Medicines, Alderley Park, Macclesfield, Cheshire, United Kingdom. FAU - Taylor, Molly AU - Taylor M AD - AstraZeneca Oncology, Innovative Medicines, Alderley Park, Macclesfield, Cheshire, United Kingdom. AD - AstraZeneca Oncology, Innovative Medicines, CRUK Cambridge Institute, Cambridge, United Kingdom. FAU - Ashton, Susan AU - Ashton S AD - AstraZeneca Oncology, Innovative Medicines, Alderley Park, Macclesfield, Cheshire, United Kingdom. FAU - Robinson, David AU - Robinson D AD - AstraZeneca Oncology, Innovative Medicines, Alderley Park, Macclesfield, Cheshire, United Kingdom. AD - AstraZeneca Oncology, Innovative Medicines, CRUK Cambridge Institute, Cambridge, United Kingdom. FAU - Cross, Darren AU - Cross D AD - AstraZeneca Oncology, Innovative Medicines, Alderley Park, Macclesfield, Cheshire, United Kingdom. AD - AstraZeneca Oncology, Innovative Medicines, CRUK Cambridge Institute, Cambridge, United Kingdom. LA - eng PT - Journal Article PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 RN - 0 (Acrylamides) RN - 0 (Aniline Compounds) RN - 0 (Antineoplastic Agents) RN - 0 (Piperazines) RN - 0 (Protein Kinase Inhibitors) RN - 3C06JJ0Z2O (osimertinib) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Acrylamides MH - Adenocarcinoma/*drug therapy/pathology MH - Adenocarcinoma of Lung MH - Aniline Compounds MH - Antineoplastic Agents/*pharmacology MH - Cell Line, Tumor MH - Drug Resistance, Neoplasm MH - ErbB Receptors/*antagonists & inhibitors/genetics MH - Glycolysis/drug effects MH - Humans MH - Lung Neoplasms/*drug therapy/pathology MH - Oxidative Phosphorylation/*drug effects MH - Piperazines/*pharmacology MH - Protein Kinase Inhibitors/*pharmacology PMC - PMC5349916 OTO - NOTNLM OT - drug resistance OT - metabolism OT - non-small cell lung cancer OT - pre-clinical models of drug efficacy OT - signal transduction COIS- CONFLICTS OF INTEREST All authors are current or former employees of AstraZeneca. EDAT- 2016/11/20 06:00 MHDA- 2018/02/23 06:00 PMCR- 2016/12/27 CRDT- 2016/11/19 06:00 PHST- 2016/03/30 00:00 [received] PHST- 2016/10/31 00:00 [accepted] PHST- 2016/11/20 06:00 [pubmed] PHST- 2018/02/23 06:00 [medline] PHST- 2016/11/19 06:00 [entrez] PHST- 2016/12/27 00:00 [pmc-release] AID - 13388 [pii] AID - 10.18632/oncotarget.13388 [doi] PST - ppublish SO - Oncotarget. 2016 Dec 27;7(52):86313-86325. doi: 10.18632/oncotarget.13388.