Oncogenic hijacking of the stress response machinery in T cell acute lymphoblastic leukemia
Kourtis, Nikos; Lazaris, Charalampos; Hockemeyer, Kathryn; Balandrán, Juan Carlos; Jimenez, Alejandra R.; Mullenders, Jasper; Gong, Yixiao; Trimarchi, Thomas; Bhatt, Kamala; Hu, Hai; Shrestha, Liza; Ambesi-Impiombato, Alberto; Kelliher, Michelle; Paietta, Elisabeth; Chiosis, Gabriela; Guzman, Monica L.; Ferrando, Adolfo A.; Tsirigos, Aristotelis; Aifantis, Iannis
(2018) Nature Medicine, volume 24, issue 8, pp. 1157 - 1166
(Article)
Abstract
Cellular transformation is accompanied by extensive rewiring of many biological processes leading to augmented levels of distinct types of cellular stress, including proteotoxic stress. Cancer cells critically depend on stress-relief pathways for their survival. However, the mechanisms underlying the transcriptional initiation and maintenance of the oncogenic stress response remain elusive.
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Here, we show that the expression of heat shock transcription factor 1 (HSF1) and the downstream mediators of the heat shock response is transcriptionally upregulated in T cell acute lymphoblastic leukemia (T-ALL). Hsf1 ablation suppresses the growth of human T-ALL and eradicates leukemia in mouse models of T-ALL, while sparing normal hematopoiesis. HSF1 drives a compact transcriptional program and among the direct HSF1 targets, specific chaperones and co-chaperones mediate its critical role in T-ALL. Notably, we demonstrate that the central T-ALL oncogene NOTCH1 hijacks the cellular stress response machinery by inducing the expression of HSF1 and its downstream effectors. The NOTCH1 signaling status controls the levels of chaperone/co-chaperone complexes and predicts the response of T-ALL patient samples to HSP90 inhibition. Our data demonstrate an integral crosstalk between mediators of oncogene and non-oncogene addiction and reveal critical nodes of the heat shock response pathway that can be targeted therapeutically.
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Keywords: General Biochemistry,Genetics and Molecular Biology
ISSN: 1078-8956
Publisher: Nature Publishing Group
Note: Funding Information: We thank all members of the Aifantis laboratory for discussions throughout the duration of this project; T. Papagiannakopoulos and P. Ntziachristos for critical assessment of this work; E. Christians (UPMC Univ. Paris 06, CNRS) for the Hsf1f/f mice; A. Heguy and the NYU Genome Technology Center (supported in part by National Institutes of Health (NIH)/National Cancer Institute (NCI) grant P30CA016087-30) for expertise with sequencing experiments; the NYU Histology Core (5P30CA16087-31) for assistance; C. Loomis and L. Chiriboga for immunohistochemistry experiments; C. Jamieson (UCSD) for human LICs; The ECOG-ACRIN Cancer Research Group for clinical specimens. This work has used computing resources at the High Performance Computing Facility at the NYU Medical Center. A.T. is supported by a Research Scholar Grant (RSG-15-189-01-RMC) from the American Cancer Society and a Leukemia & Lymphoma Society New Idea Award (8007-17). I.A. is supported by the NIH (R01CA133379, R01CA105129, R01CA149655, 5R01CA173636, 1R01CA194923), the NYSTEM program of the New York State Health Department (NYSTEM-N11G-255) and the Leukemia & Lymphoma Society (LLS) Translational Research Program (TRP). J.C.B. was supported by CONACyT (FOSISSS 2015-1-261848) and IMSS (FIS/IMSS/PROT/G14/1289). J.M. was supported by KWF BUIT2012-5358. N.K. is supported by a Human Frontiers Science Program (HFSP) Long Term Fellowship (LT000150/2013-L) and previously by a Charles H. Revson Senior Fellowship in Biomedical Science (15–31) and a European Molecular Biology Organization (EMBO) Long Term Fellowship (ALTF 850-2012). Publisher Copyright: © 2018, The Author(s).
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