PMID- 30190422 OWN - NLM STAT- MEDLINE DCOM- 20190910 LR - 20240405 IS - 1538-8514 (Electronic) IS - 1535-7163 (Print) IS - 1535-7163 (Linking) VI - 17 IP - 12 DP - 2018 Dec TI - Mechanisms Behind Resistance to PI3K Inhibitor Treatment Induced by the PIM Kinase. PG - 2710-2721 LID - 10.1158/1535-7163.MCT-18-0374 [doi] AB - Cancer resistance to PI3K inhibitor therapy can be in part mediated by increases in the PIM1 kinase. However, the exact mechanism by which PIM kinase promotes tumor cell resistance is unknown. Our study unveils the pivotal control of redox signaling by PIM kinases as a driver of this resistance mechanism. PIM1 kinase functions to decrease cellular ROS levels by enhancing nuclear factor erythroid 2-related factor 2 (NRF2)/antioxidant response element activity. PIM prevents cell death induced by PI3K-AKT-inhibitory drugs through a noncanonical mechanism of NRF2 ubiquitination and degradation and translational control of NRF2 protein levels through modulation of eIF4B and mTORC1 activity. Importantly, PIM also controls NAD(P)H production by increasing glucose flux through the pentose phosphate shunt decreasing ROS production, and thereby diminishing the cytotoxicity of PI3K-AKT inhibitors. Treatment with PIM kinase inhibitors reverses this resistance phenotype, making tumors increasingly susceptible to small-molecule therapeutics, which block the PI3K-AKT pathway. CI - (c)2018 American Association for Cancer Research. FAU - Song, Jin H AU - Song JH AUID- ORCID: 0000-0002-0123-2909 AD - Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona. jinsong@email.arizona.edu akraft@uacc.arizona.edu. AD - University of Arizona Cancer Center, Tucson, Arizona. FAU - Singh, Neha AU - Singh N AD - University of Arizona Cancer Center, Tucson, Arizona. FAU - Luevano, Libia A AU - Luevano LA AD - University of Arizona Cancer Center, Tucson, Arizona. FAU - Padi, Sathish K R AU - Padi SKR AD - University of Arizona Cancer Center, Tucson, Arizona. FAU - Okumura, Koichi AU - Okumura K AD - Department of Physiology, University of Arizona, Tucson, Arizona. FAU - Olive, Virginie AU - Olive V AD - Department of Medicine, University of Arizona, Tucson, Arizona. FAU - Black, Stephen M AU - Black SM AD - Department of Physiology, University of Arizona, Tucson, Arizona. AD - Department of Medicine, University of Arizona, Tucson, Arizona. FAU - Warfel, Noel A AU - Warfel NA AD - Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona. AD - University of Arizona Cancer Center, Tucson, Arizona. FAU - Goodrich, David W AU - Goodrich DW AUID- ORCID: 0000-0002-1021-1827 AD - Department of Pharmacology and Therapeutics, Roswell Park Cancer Institute, New York, New York. FAU - Kraft, Andrew S AU - Kraft AS AD - University of Arizona Cancer Center, Tucson, Arizona. jinsong@email.arizona.edu akraft@uacc.arizona.edu. AD - Department of Medicine, University of Arizona, Tucson, Arizona. LA - eng GR - R01 CA173200/CA/NCI NIH HHS/United States GR - P30 CA023074/CA/NCI NIH HHS/United States GR - P01 HL134610/HL/NHLBI NIH HHS/United States GR - P30 ES006694/ES/NIEHS NIH HHS/United States GR - R01 CA207757/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20180906 PL - United States TA - Mol Cancer Ther JT - Molecular cancer therapeutics JID - 101132535 RN - 0 (NF-E2-Related Factor 2) RN - 0 (NFE2L2 protein, human) RN - 0 (Phosphoinositide-3 Kinase Inhibitors) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Reactive Oxygen Species) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-pim-1) RN - EC 2.7.11.1 (proto-oncogene proteins pim) RN - GAN16C9B8O (Glutathione) SB - IM MH - Animals MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Cell Survival/drug effects MH - *Drug Resistance, Neoplasm/drug effects MH - Drug Synergism MH - Glutathione/metabolism MH - Humans MH - Male MH - Mice, SCID MH - NF-E2-Related Factor 2/metabolism MH - Oxidation-Reduction MH - Phosphatidylinositol 3-Kinases/metabolism MH - *Phosphoinositide-3 Kinase Inhibitors MH - Protein Kinase Inhibitors/*pharmacology MH - Protein Stability/drug effects MH - Proto-Oncogene Proteins c-akt/antagonists & inhibitors/metabolism MH - Proto-Oncogene Proteins c-pim-1/*metabolism MH - Reactive Oxygen Species/metabolism MH - Ubiquitination/drug effects MH - Up-Regulation/drug effects PMC - PMC6279580 MID - NIHMS1506054 COIS- Disclosure of Potential Conflicts of Interest Research. The authors disclose no competing interest. EDAT- 2018/09/08 06:00 MHDA- 2019/09/11 06:00 PMCR- 2019/12/01 CRDT- 2018/09/08 06:00 PHST- 2018/04/10 00:00 [received] PHST- 2018/05/27 00:00 [revised] PHST- 2018/08/30 00:00 [accepted] PHST- 2018/09/08 06:00 [pubmed] PHST- 2019/09/11 06:00 [medline] PHST- 2018/09/08 06:00 [entrez] PHST- 2019/12/01 00:00 [pmc-release] AID - 1535-7163.MCT-18-0374 [pii] AID - 10.1158/1535-7163.MCT-18-0374 [doi] PST - ppublish SO - Mol Cancer Ther. 2018 Dec;17(12):2710-2721. doi: 10.1158/1535-7163.MCT-18-0374. Epub 2018 Sep 6.