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Tran MGB, Bibby BAS, Yang L, Lo F, Warren AY, Shukla D, Osborne M, Hadfield J, Carroll T, Stark R, Scott H, Ramos-Montoya A, Massie C, Maxwell P, West CML, Mills IG, Neal DE. Independence of HIF1a and androgen signaling pathways in prostate cancer. BMC Cancer 2020; 20:469. [PMID: 32450824 PMCID: PMC7249645 DOI: 10.1186/s12885-020-06890-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/22/2020] [Indexed: 01/27/2023] Open
Abstract
Background Therapeutic targeting of the androgen signaling pathway is a mainstay treatment for prostate cancer. Although initially effective, resistance to androgen targeted therapies develops followed by disease progression to castrate-resistant prostate cancer (CRPC). Hypoxia and HIF1a have been implicated in the development of resistance to androgen targeted therapies and progression to CRCP. The interplay between the androgen and hypoxia/HIF1a signaling axes was investigated. Methods In vitro stable expression of HIF1a was established in the LNCaP cell line by physiological induction or retroviral transduction. Tumor xenografts with stable expression of HIF1a were established in castrated and non-castrated mouse models. Gene expression analysis identified transcriptional changes in response to androgen treatment, hypoxia and HIF1a. The binding sites of the AR and HIF transcription factors were identified using ChIP-seq. Results Androgen and HIF1a signaling promoted proliferation in vitro and enhanced tumor growth in vivo. The stable expression of HIF1a in vivo restored tumor growth in the absence of endogenous androgens. Hypoxia reduced AR binding sites whereas HIF binding sites were increased with androgen treatment under hypoxia. Gene expression analysis identified seven genes that were upregulated both by AR and HIF1a, of which six were prognostic. Conclusions The oncogenic AR, hypoxia and HIF1a pathways support prostate cancer development through independent signaling pathways and transcriptomic profiles. AR and hypoxia/HIF1a signaling pathways independently promote prostate cancer progression and therapeutic targeting of both pathways simultaneously is warranted.
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Affiliation(s)
- Maxine G B Tran
- Uro-oncology Research Group, Cancer Research UK Cambridge Institute, Cambridge, CB02 0RE, UK.,UCL division of Surgery and Interventional Science, Royal Free Hospital, Pond Street, London, NW3 2QG, UK
| | - Becky A S Bibby
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Christie Hospital NHS Trust, M20 4BX, Manchester, UK
| | - Lingjian Yang
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Christie Hospital NHS Trust, M20 4BX, Manchester, UK
| | - Franklin Lo
- Uro-oncology Research Group, Cancer Research UK Cambridge Institute, Cambridge, CB02 0RE, UK
| | - Anne Y Warren
- Department of Pathology, Addenbrooke's Cambridge University Hospital, Cambridge, UK
| | - Deepa Shukla
- Division of Medicine, University College London, London, UK
| | - Michelle Osborne
- Uro-oncology Research Group, Cancer Research UK Cambridge Institute, Cambridge, CB02 0RE, UK
| | - James Hadfield
- Uro-oncology Research Group, Cancer Research UK Cambridge Institute, Cambridge, CB02 0RE, UK
| | - Thomas Carroll
- Uro-oncology Research Group, Cancer Research UK Cambridge Institute, Cambridge, CB02 0RE, UK
| | - Rory Stark
- Uro-oncology Research Group, Cancer Research UK Cambridge Institute, Cambridge, CB02 0RE, UK
| | - Helen Scott
- Uro-oncology Research Group, Cancer Research UK Cambridge Institute, Cambridge, CB02 0RE, UK
| | - Antonio Ramos-Montoya
- Uro-oncology Research Group, Cancer Research UK Cambridge Institute, Cambridge, CB02 0RE, UK
| | - Charlie Massie
- Uro-oncology Research Group, Cancer Research UK Cambridge Institute, Cambridge, CB02 0RE, UK.,Department of Oncology, University of Cambridge, London, CB2 0XZ, UK
| | - Patrick Maxwell
- Cambridge Institute of Medical Research, Cambridge Biomedical Campus, Cambridge, CB2 0SP, UK
| | - Catharine M L West
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Christie Hospital NHS Trust, M20 4BX, Manchester, UK.,Manchester Biomedical Research Centre, University of Manchester, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Ian G Mills
- Patrick G Johnston Centre for Cancer Research and Cell Biology, Queens University Belfast, Belfast, BT9 7AE, UK. .,Nuffield Department of Surgical Sciences, University of Oxford, Oxford, OX3 9DU, UK.
| | - David E Neal
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, OX3 9DU, UK.,Academic Urology Group, University of Cambridge, Cambridge, UK
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The histone demethylase KDM3A regulates the transcriptional program of the androgen receptor in prostate cancer cells. Oncotarget 2018; 8:30328-30343. [PMID: 28416760 PMCID: PMC5444746 DOI: 10.18632/oncotarget.15681] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 09/09/2016] [Indexed: 01/07/2023] Open
Abstract
The lysine demethylase 3A (KDM3A, JMJD1A or JHDM2A) controls transcriptional networks in a variety of biological processes such as spermatogenesis, metabolism, stem cell activity, and tumor progression. We matched transcriptomic and ChIP-Seq profiles to decipher a genome-wide regulatory network of epigenetic control by KDM3A in prostate cancer cells. ChIP-Seq experiments monitoring histone 3 lysine 9 (H3K9) methylation marks show global histone demethylation effects of KDM3A. Combined assessment of histone demethylation events and gene expression changes presented major transcriptional activation suggesting that distinct oncogenic regulators may synergize with the epigenetic patterns by KDM3A. Pathway enrichment analysis of cells with KDM3A knockdown prioritized androgen signaling indicating that KDM3A plays a key role in regulating androgen receptor activity. Matched ChIP-Seq and knockdown experiments of KDM3A in combination with ChIP-Seq of the androgen receptor resulted in a gain of H3K9 methylation marks around androgen receptor binding sites of selected transcriptional targets in androgen signaling including positive regulation of KRT19, NKX3-1, KLK3, NDRG1, MAF, CREB3L4, MYC, INPP4B, PTK2B, MAPK1, MAP2K1, IGF1, E2F1, HSP90AA1, HIF1A, and ACSL3. The cancer systems biology analysis of KDM3A-dependent genes identifies an epigenetic and transcriptional network in androgen response, hypoxia, glycolysis, and lipid metabolism. Genome-wide ChIP-Seq data highlights specific gene targets and the ability of epigenetic master regulators to control oncogenic pathways and cancer progression.
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