Abstract
The glucocorticoid receptor (GR) regulates gene expression, governing aspects of homeostasis, but is also involved in cancer. Pharmacological GR activation is frequently used to alleviate therapy-related side-effects. While prior studies have shown GR activation might also have anti-proliferative action on tumours, the underpinnings of glucocorticoid action and its direct effectors in non-lymphoid solid cancers remain elusive. Here, we study the mechanisms of glucocorticoid response, focusing on lung cancer. We show that GR activation induces reversible cancer cell dormancy characterised by anticancer drug tolerance, and activation of growth factor survival signalling accompanied by vulnerability to inhibitors. GR-induced dormancy is dependent on a single GR-target gene, CDKN1C, regulated through chromatin looping of a GR-occupied upstream distal enhancer in a SWI/SNF-dependent fashion. These insights illustrate the importance of GR signalling in non-lymphoid solid cancer biology, particularly in lung cancer, and warrant caution for use of glucocorticoids in treatment of anticancer therapy related side-effects.
Original language | English |
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Article number | 4360 |
Number of pages | 18 |
Journal | Nature Communications |
Volume | 12 |
Issue number | 1 |
DOIs | |
Publication status | Published - 16 Jul 2021 |
Bibliographical note
Funding Information:This work was funded by the Netherlands Organization for Scientific Research NWO VIDI grant 91716401, an Alpe d’Huzes/KWF Bas Mulder Award, KWF grant #12128, and Oncode Institute. Joana Silva was supported by an EMBO long-term fellowship (ALTF 210-2018). Balázs Győrffy was supported by the NVKP_16-1-2016-0037 grant. We would like to acknowledge the NKI-AVL Core Facility Molecular Pathology & Biobanking (CFMPB) for lab support, the NKI Genomics Core Facility for Illumina sequencing and bioinformatics support, and the NKI mouse intervention unit for performing xenograft experiments. We thank Laurel M. Schunselaar for help with mesothelioma pathological samples; Suzan Stelloo for frequent, and helpful discussions; and Sarah Vahed for proofreading.
Publisher Copyright:
© 2021, The Author(s).
Keywords
- Animals
- Antineoplastic Agents/pharmacology
- Cell Cycle/genetics
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Cell Survival/drug effects
- Chromatin/genetics
- Chromatin Immunoprecipitation Sequencing
- Chromosomal Proteins, Non-Histone/genetics
- Cyclin-Dependent Kinase Inhibitor p57/genetics
- Enhancer Elements, Genetic
- Gene Expression Regulation, Neoplastic/drug effects
- Glucocorticoids/pharmacology
- Humans
- Imidazoles/pharmacology
- Immunohistochemistry
- Lung Neoplasms/genetics
- Mice
- Proteomics
- Pyrazines/pharmacology
- RNA, Small Interfering
- RNA-Seq
- Receptor, IGF Type 1/metabolism
- Receptors, Glucocorticoid/metabolism
- Transcription Factors/genetics
- Xenograft Model Antitumor Assays