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Atri Roozbahani G, Kokal-Ribaudo M, Heidari Horestani M, Pungsrinont T, Baniahmad A. The protein composition of exosomes released by prostate cancer cells is distinctly regulated by androgen receptor-antagonists and -agonist to stimulate growth of target cells. Cell Commun Signal 2024; 22:219. [PMID: 38589887 PMCID: PMC11000412 DOI: 10.1186/s12964-024-01584-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/23/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND Prostate cancer (PCa) is a prevalent malignancy in men worldwide, ranking as the second leading cause of cancer-related death in Western countries. Various PCa hormone therapies, such as androgen receptor (AR)-antagonists or supraphysiological androgen level (SAL) reduce cancer cell proliferation. However, treated cells may influence the growth of neighboring cells through secreted exosomes in the tumor microenvironment (TME). Here, the change of protein content of exosomes secreted from PCa cells through treatment with different AR-antagonists or SAL has been analyzed. METHODS Isolation of exosomes via ultracentrifugation of treated human PCa LNCaP cells with AR-agonist and various AR-antagonists; analysis of cellular senescence by detection of senescence associated beta galactosidase activity (SA β-Gal); Western blotting and immunofluorescence staining; Mass spectrometry (MS-spec) of exosomes and bioinformatic analyses to identify ligand-specific exosomal proteins. Growth assays to analyze influence of exosomes on non-treated cells. RESULTS MS-spec analysis identified ligand-specific proteins in exosomes. One thousand seventy proteins were up- and 52 proteins downregulated by SAL whereas enzalutamide upregulated 151 proteins and downregulated 42 exosomal proteins. The bioinformatic prediction indicates an up-regulation of pro-proliferative pathways. AR ligands augment hub factors in exosomes that include AKT1, CALM1, PAK2 and CTNND1. Accordingly, functional assays confirmed that the isolated exosomes from AR-ligand treated cells promote growth of untreated PCa cells. CONCLUSION The data suggest that the cargo of exosomes is controlled by AR-agonist and -antagonists and distinct among the AR-antagonists. Further, exosomes promote growth that might influence the TME. This finding sheds light into the complex interplay between AR signaling and exosome-mediated communication between PCa cells.
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Affiliation(s)
- Golnaz Atri Roozbahani
- Institute of Human Genetics, Jena University Hospital, Am Klinikum 1, 07740, Jena, Germany
| | - Miriam Kokal-Ribaudo
- Institute of Human Genetics, Jena University Hospital, Am Klinikum 1, 07740, Jena, Germany
| | | | - Thanakorn Pungsrinont
- Institute of Human Genetics, Jena University Hospital, Am Klinikum 1, 07740, Jena, Germany
| | - Aria Baniahmad
- Institute of Human Genetics, Jena University Hospital, Am Klinikum 1, 07740, Jena, Germany.
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2
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Kallenbach J, Atri Roozbahani G, Heidari Horestani M, Baniahmad A. Distinct mechanisms mediating therapy-induced cellular senescence in prostate cancer. Cell Biosci 2022; 12:200. [PMID: 36522745 PMCID: PMC9753376 DOI: 10.1186/s13578-022-00941-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Prostate cancer (PCa) is an age-related malignancy in men with a high incidence rate. PCa treatments face many obstacles due to cancer cell resistance and many bypassing mechanisms to escape therapy. According to the intricacy of PCa, many standard therapies are being used depending on PCa stages including radical prostatectomy, radiation therapy, androgen receptor (AR) targeted therapy (androgen deprivation therapy, supraphysiological androgen, and AR antagonists) and chemotherapy. Most of the aforementioned therapies have been implicated to induce cellular senescence. Cellular senescence is defined as a stable cell cycle arrest in the G1 phase and is one of the mechanisms that prevent cancer proliferation. RESULTS In this review, we provide and analyze different mechanisms of therapy-induced senescence (TIS) in PCa and their effects on the tumor. Interestingly, it seems that different molecular pathways are used by cancer cells for TIS. Understanding the complexity and underlying mechanisms of cellular senescence is very critical due to its role in tumorigenesis. The most prevalent analyzed pathways in PCa as TIS are the p53/p21WAF1/CIP1, the p15INK4B/p16INK4A/pRb/E2F/Cyclin D, the ROS/ERK, p27Kip1/CDK/pRb, and the p27Kip1/Skp2/C/EBP β signaling. Despite growth inhibition, senescent cells are highly metabolically active. In addition, their secretome, which is termed senescence-associated secretory phenotype (SASP), affects within the tumor microenvironment neighboring non-tumor and tumor cells and thereby may regulate the growth of tumors. Induction of cancer cell senescence is therefore a double-edged sword that can lead to reduced or enhanced tumor growth. CONCLUSION Thus, dependent on the type of senescence inducer and the specific senescence-induced cellular pathway, it is useful to develop pathway-specific senolytic compounds to specifically targeting senescent cells in order to evict senescent cells and thereby to reduce SASP side effects.
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Affiliation(s)
- Julia Kallenbach
- grid.9613.d0000 0001 1939 2794Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Am Klinikum 1, 07740 Jena, Germany
| | - Golnaz Atri Roozbahani
- grid.9613.d0000 0001 1939 2794Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Am Klinikum 1, 07740 Jena, Germany
| | - Mehdi Heidari Horestani
- grid.9613.d0000 0001 1939 2794Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Am Klinikum 1, 07740 Jena, Germany
| | - Aria Baniahmad
- grid.9613.d0000 0001 1939 2794Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Am Klinikum 1, 07740 Jena, Germany
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3
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Qiu X, Brown LG, Conner JL, Nguyen HM, Boufaied N, Abou Alaiwi S, Seo JH, El Zarif T, Bell C, O’Connor E, Hanratty B, Pomerantz M, Freedman ML, Brown M, Haffner MC, Nelson PS, Feng FY, Labbé DP, Long HW, Corey E. Response to supraphysiological testosterone is predicted by a distinct androgen receptor cistrome. JCI Insight 2022; 7:157164. [PMID: 35603787 PMCID: PMC9220831 DOI: 10.1172/jci.insight.157164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The androgen receptor (AR) is a master transcription factor that regulates prostate cancer (PC) development and progression. Inhibition of AR signaling by androgen deprivation is the first-line therapy with initial efficacy for advanced and recurrent PC. Paradoxically, supraphysiological levels of testosterone (SPT) also inhibit PC progression. However, as with any therapy, not all patients show a therapeutic benefit, and responses differ widely in magnitude and duration. In this study, we evaluated whether differences in the AR cistrome before treatment can distinguish between SPT-responding (R) and -nonresponding (NR) tumors. We provide the first preclinical evidence to our knowledge that SPT-R tumors exhibit a distinct AR cistrome when compared with SPT-NR tumors, indicating a differential biological role of the AR. We applied an integrated analysis of ChIP-Seq and RNA-Seq to the pretreatment tumors and identified an SPT-R signature that distinguishes R and NR tumors. Because transcriptomes of SPT-treated clinical specimens are not available, we interrogated available castration-resistant PC (CRPC) transcriptomes and showed that the SPT-R signature is associated with improved survival and has the potential to identify patients who would respond to SPT. These findings provide an opportunity to identify the subset of patients with CRPC who would benefit from SPT therapy.
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Affiliation(s)
- Xintao Qiu
- Center for Functional Cancer Epigenetics, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Lisha G. Brown
- Department of Urology, University of Washington, Seattle, Washington, USA
| | - Jennifer L. Conner
- Department of Urology, University of Washington, Seattle, Washington, USA
| | - Holly M. Nguyen
- Department of Urology, University of Washington, Seattle, Washington, USA
| | - Nadia Boufaied
- Cancer Research Program, Research Institute of the McGill University Health Centre, Montréal, Québec, Canada
| | - Sarah Abou Alaiwi
- Center for Functional Cancer Epigenetics, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Ji-Heui Seo
- Center for Functional Cancer Epigenetics, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Talal El Zarif
- Center for Functional Cancer Epigenetics, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Connor Bell
- Center for Functional Cancer Epigenetics, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Edward O’Connor
- Center for Functional Cancer Epigenetics, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Brian Hanratty
- Divisions of Human Biology and Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Mark Pomerantz
- Center for Functional Cancer Epigenetics, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Matthew L. Freedman
- Center for Functional Cancer Epigenetics, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Myles Brown
- Center for Functional Cancer Epigenetics, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Michael C. Haffner
- Divisions of Human Biology and Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Peter S. Nelson
- Divisions of Human Biology and Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Felix Y. Feng
- University of California at San Francisco, San Francisco, California, USA
| | - David P. Labbé
- Cancer Research Program, Research Institute of the McGill University Health Centre, Montréal, Québec, Canada
- Department of Surgery, Division of Urology, McGill University, Montréal, Québec, Canada
| | - Henry W. Long
- Center for Functional Cancer Epigenetics, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Eva Corey
- Department of Urology, University of Washington, Seattle, Washington, USA
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4
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Gongora ABL, Marshall CH, Velho PI, Lopes CDH, Marin JF, Camargo AA, Bastos DA, Antonarakis ES. Extreme Responses to a Combination of DNA-Damaging Therapy and Immunotherapy in CDK12-Altered Metastatic Castration-Resistant Prostate Cancer: A Potential Therapeutic Vulnerability. Clin Genitourin Cancer 2021; 20:183-188. [PMID: 35027313 DOI: 10.1016/j.clgc.2021.11.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 11/29/2021] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Pedro Isaacsson Velho
- Department of Oncology, Johns Hopkins School of Medicine, Baltimore, MD; Department of Oncology, Hospital Moinhos de Vento, Porto Alegre, Brazil
| | - Carlos D H Lopes
- Department of Oncology, Hospital Sírio-Libanês, São Paulo, Brazil
| | - José F Marin
- Department of nuclear medicine, Hospital Sírio-Libanês, São Paulo, Brazil
| | | | - Diogo A Bastos
- Department of Oncology, Hospital Sírio-Libanês, São Paulo, Brazil
| | - Emmanuel S Antonarakis
- Department of Medicine, Division of Hematology/Oncology and Transplantation, University of Minnesota, Minneapolis, MN
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5
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Xiong X, Qiu S, Yi X, Xu H, Lei H, Liao D, Bai S, Peng G, Wei Q, Ai J, Yang L. Efficacy and safety of bipolar androgen therapy in mCRPC after progression on abiraterone or enzalutamide: A systematic review. Urol Oncol 2021; 40:4.e19-4.e28. [PMID: 34548234 DOI: 10.1016/j.urolonc.2021.08.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 07/04/2021] [Accepted: 08/13/2021] [Indexed: 02/05/2023]
Abstract
PURPOSE To further determine the efficacy and safety of bipolar androgen therapy (BAT) on patients with metastatic castration-resistant prostate cancer (mCRPC) after progression on abiraterone (ABI) or enzalutamide (ENZA). MATERIALS AND METHODS We systematically searched the Pubmed, Web of Science and ClinicalTrials.gov up to June 2021. Literature review, study selection, and data extraction were conducted by 2 reviewers. Risk of bias was assessed according to the methodology of the European Association of Urology (EAU). A systematic review and pooled analysis were performed. The primary outcomes were PSA50 after BAT and AR-targeted therapy rechallenge, objective response rate (ORR) after BAT, and AEs after BAT. The definition of PSA50 was that participants achieving a PSA decline ≥50% according to Prostate Cancer Working Group (PCWG2) criteria. The ORR determined by determined by Response Evaluation Criteria in Solid Tumors (RECIST) included patients experienced partial response (PR) or complete response (CR). RESULTS In a total of 74 unique records, 5 studies were eligible for inclusion. Participants who underwent BAT achieved PSA50 of 0.26 (95% CI [0.20, 0.32]) and objective response rate (ORR) of 0.32 (95% CI [0.21, 0.44]). Patients completed BAT proceeded to AR-target therapy (ABI or ENZA) achieved moderate response (PSA50 0.54, 95% CI [0.30, 0.76]). Based on our multiple subgroup analysis, type of post-BAT AR-target therapy had a strong impact on PSA50 of AR-target therapy rechallenge. Most of adverse events (AEs) were low grade. CONCLUSIONS The present study indicated that BAT could induce clinical responses in mCRPC patients after progression on ABI or ENZA, with an acceptable side effects profile. BAT could also be able to restore sensitivity to ABI and ENZA rechallenge in a subset of patients.
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Affiliation(s)
- Xingyu Xiong
- Department of Urology, Institute of Urology, Center of Biomedical big data and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Shi Qiu
- Department of Urology, Institute of Urology, Center of Biomedical big data and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China; Center of Biomedical big data, West China Hospital, Sichuan University, Chengdu, China
| | - Xianyanling Yi
- Department of Urology, Institute of Urology, Center of Biomedical big data and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Hang Xu
- Department of Urology, Institute of Urology, Center of Biomedical big data and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Haoran Lei
- Department of Urology, Institute of Urology, Center of Biomedical big data and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Dazhou Liao
- Department of Urology, Institute of Urology, Center of Biomedical big data and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Shengjiang Bai
- Department of Urology, Institute of Urology, Center of Biomedical big data and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Ge Peng
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Qiang Wei
- Department of Urology, Institute of Urology, Center of Biomedical big data and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Jianzhong Ai
- Department of Urology, Institute of Urology, Center of Biomedical big data and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China.
| | - Lu Yang
- Department of Urology, Institute of Urology, Center of Biomedical big data and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China.
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6
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Sottnik JL, Vanderlinden L, Joshi M, Chauca-Diaz A, Owens C, Hansel DE, Sempeck C, Ghosh D, Theodorescu D. Androgen Receptor Regulates CD44 Expression in Bladder Cancer. Cancer Res 2021; 81:2833-2846. [PMID: 33687952 PMCID: PMC8782536 DOI: 10.1158/0008-5472.can-20-3095] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 12/29/2020] [Accepted: 03/04/2021] [Indexed: 11/16/2022]
Abstract
The androgen receptor (AR) is important in the development of both experimental and human bladder cancer. However, the role of AR in bladder cancer growth and progression is less clear, with literature indicating that more advanced stage and grade disease are associated with reduced AR expression. To determine the mechanisms underlying these relationships, we profiled AR-expressing human bladder cancer cells by AR chromatin immunoprecipitation sequencing and complementary transcriptomic approaches in response to in vitro stimulation by the synthetic androgen R1881. In vivo functional genomics consisting of pooled shRNA or pooled open reading frame libraries was employed to evaluate 97 genes that recapitulate the direction of expression associated with androgen stimulation. Interestingly, we identified CD44, the receptor for hyaluronic acid, a potent biomarker and driver of progressive disease in multiple tumor types, as significantly associated with androgen stimulation. CRISPR-based mutagenesis of androgen response elements associated with CD44 identified a novel silencer element leading to the direct transcriptional repression of CD44 expression. In human patients with bladder cancer, tumor AR and CD44 mRNA and protein expression were inversely correlated, suggesting a clinically relevant AR-CD44 axis. Collectively, our work describes a novel mechanism partly explaining the inverse relationship between AR and bladder cancer tumor progression and suggests that AR and CD44 expression may be useful for prognostication and therapeutic selection in primary bladder cancer. SIGNIFICANCE: This study describes novel AREs that suppress CD44 and an expected inverse correlation of AR-CD44 expression observed in human bladder tumors.
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Affiliation(s)
- Joseph L Sottnik
- Department of Pathology, University of Colorado - Anschutz Medical Campus, Aurora, Colorado
| | - Lauren Vanderlinden
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado - Anschutz Medical Campus, Aurora, Colorado
| | - Molishree Joshi
- Department of Pharmacology, University of Colorado - Anschutz Medical Campus, Aurora, Colorado
- Functional Genomics Facility, University of Colorado - Anschutz Medical Campus, Aurora, Colorado
| | - Ana Chauca-Diaz
- Department of Surgery, University of Colorado - Anschutz Medical Campus, Aurora, Colorado
| | - Charles Owens
- Department of Surgery, University of Colorado - Anschutz Medical Campus, Aurora, Colorado
| | - Donna E Hansel
- Department of Pathology & Laboratory Medicine, Oregon Health & Science University, Portland, Oregon
| | - Colin Sempeck
- Department of Molecular Cellular & Developmental Biology, University of Colorado - Boulder, Boulder, Colorado
| | - Debashis Ghosh
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado - Anschutz Medical Campus, Aurora, Colorado
| | - Dan Theodorescu
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California.
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
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7
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Thelen P, Taubert H, Duensing S, Kristiansen G, Merseburger AS, Cronauer MV. [The impact of the androgen receptor splice variant AR-V7 on the prognosis and treatment of advanced prostate cancer]. Aktuelle Urol 2020; 51:582-592. [PMID: 29370587 DOI: 10.1055/s-0043-115426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A recently discovered mechanism enabling prostate cancer cells to escape the effects of endocrine therapies consists in the synthesis of C-terminally truncated, constitutively active androgen receptor (AR) splice variants (AR-V). Devoid of a functional C-terminal hormone/ligand binding domain, various AR-Vs are insensitive to therapies targeting the androgen/AR signalling axis. Preliminary studies suggest that AR-V7, the most common AR-V, is a promising predictive tumour marker and a relevant selection marker for the treatment of advanced prostate cancer. This review critically outlines recent advances in AR-V7 diagnostics and presents an overview of current AR-V7 targeted therapies.
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Affiliation(s)
- P. Thelen
- Klinik für Urologie, Universitätsmedizin Göttingen, 37099 Göttingen
| | - H. Taubert
- Urologische und Kinderurologische Klinik, Universitätsklinikum Erlangen, 91054 Erlangen
| | - S. Duensing
- Urologische Klinik, Sektion für Molekulare Uro-Onkologie, Universitätsklinikum Heidelberg, 69120 Heidelberg
| | - G. Kristiansen
- Institut für Pathologie, Universitätsklinikum Bonn, 53127 Bonn
| | - A. S. Merseburger
- Klinik für Urologie, Universitätsklinikum Schleswig-Holstein – Campus Lübeck, 23538 Lübeck
| | - M. V. Cronauer
- Klinik für Urologie, Universitätsklinikum Schleswig-Holstein – Campus Lübeck, 23538 Lübeck
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8
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Kregel S, Bagamasbad P, He S, LaPensee E, Raji Y, Brogley M, Chinnaiyan A, Cieslik M, Robins DM. Differential modulation of the androgen receptor for prostate cancer therapy depends on the DNA response element. Nucleic Acids Res 2020; 48:4741-4755. [PMID: 32198885 PMCID: PMC7229860 DOI: 10.1093/nar/gkaa178] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 02/27/2020] [Accepted: 03/16/2020] [Indexed: 12/30/2022] Open
Abstract
Androgen receptor (AR) action is a hallmark of prostate cancer (PCa) with androgen deprivation being standard therapy. Yet, resistance arises and aberrant AR signaling promotes disease. We sought compounds that inhibited genes driving cancer but not normal growth and hypothesized that genes with consensus androgen response elements (cAREs) drive proliferation but genes with selective elements (sAREs) promote differentiation. In a high-throughput promoter-dependent drug screen, doxorubicin (dox) exhibited this ability, acting on DNA rather than AR. This dox effect was observed at low doses for multiple AR target genes in multiple PCa cell lines and also occurred in vivo. Transcriptomic analyses revealed that low dox downregulated cell cycle genes while high dox upregulated DNA damage response genes. In chromatin immunoprecipitation (ChIP) assays with low dox, AR binding to sARE-containing enhancers increased, whereas AR was lost from cAREs. Further, ChIP-seq analysis revealed a subset of genes for which AR binding in low dox increased at pre-existing sites that included sites for prostate-specific factors such as FOXA1. AR dependence on cofactors at sAREs may be the basis for differential modulation by dox that preserves expression of genes for survival but not cancer progression. Repurposing of dox may provide unique opportunities for PCa treatment.
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Affiliation(s)
- Steven Kregel
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Pia Bagamasbad
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Shihan He
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Elizabeth LaPensee
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Yemi Raji
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Michele Brogley
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Arul Chinnaiyan
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Medicine and Urology, University of Michigan, Ann Arbor, MI 48109, USA.,Howard Hughes Medical Institute, University of Michigan, Ann Arbor, MI 48109, USA.,Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Marcin Cieslik
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA.,Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Diane M Robins
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
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9
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Lo EM, Balasubramanian A, Pastuszak AW, Khera M. Bipolar Androgen Therapy in Prostate Cancer (Update). J Sex Med 2020; 17:831-834. [PMID: 32033864 DOI: 10.1016/j.jsxm.2019.12.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 12/12/2019] [Accepted: 12/21/2019] [Indexed: 12/01/2022]
Affiliation(s)
- Eric M Lo
- Baylor College of Medicine, Houston, TX, USA
| | | | - Alexander W Pastuszak
- Division of Urology, Department of Surgery, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Mohit Khera
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA.
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10
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Miyahira AK, Sharp A, Ellis L, Jones J, Kaochar S, Larman HB, Quigley DA, Ye H, Simons JW, Pienta KJ, Soule HR. Prostate cancer research: The next generation; report from the 2019 Coffey-Holden Prostate Cancer Academy Meeting. Prostate 2020; 80:113-132. [PMID: 31825540 PMCID: PMC7301761 DOI: 10.1002/pros.23934] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 11/18/2019] [Indexed: 12/12/2022]
Abstract
INTRODUCTION The 2019 Coffey-Holden Prostate Cancer Academy (CHPCA) Meeting, "Prostate Cancer Research: The Next Generation," was held 20 to 23 June, 2019, in Los Angeles, California. METHODS The CHPCA Meeting is an annual conference held by the Prostate Cancer Foundation, that is uniquely structured to stimulate intense discussion surrounding topics most critical to accelerating prostate cancer research and the discovery of new life-extending treatments for patients. The 7th Annual CHPCA Meeting was attended by 86 investigators and concentrated on many of the most promising new treatment opportunities and next-generation research technologies. RESULTS The topics of focus at the meeting included: new treatment strategies and novel agents for targeted therapies and precision medicine, new treatment strategies that may synergize with checkpoint immunotherapy, next-generation technologies that visualize tumor microenvironment (TME) and molecular pathology in situ, multi-omics and tumor heterogeneity using single cells, 3D and TME models, and the role of extracellular vesicles in cancer and their potential as biomarkers. DISCUSSION This meeting report provides a comprehensive summary of the talks and discussions held at the 2019 CHPCA Meeting, for the purpose of globally disseminating this knowledge and ultimately accelerating new treatments and diagnostics for patients with prostate cancer.
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Affiliation(s)
- Andrea K. Miyahira
- Science Department, Prostate Cancer Foundation, Santa Monica, California
| | - Adam Sharp
- Division of Clinical Studies, Institute of Cancer Research, London, UK
- Department of Medicine, The Royal Marsden NHS Foundation Trust, London, UK
| | - Leigh Ellis
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Boston, Massachusetts
- Department of Pathology, Brigham and Womenʼs Hospital, Harvard Medical School, Boston, Massachusetts
- The Broad Institute of MIT and Harvard University, Cambridge, Massachusetts
| | - Jennifer Jones
- National Cancer Institute, Center for Cancer Research, National Institutes of Health, Bethesda, Maryland
| | - Salma Kaochar
- Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - H. Benjamin Larman
- Division of Immunology, Department of Pathology, The Johns Hopkins School of Medicine, Baltimore, Maryland
| | - David A. Quigley
- Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California
- Department of Epidemiology & Biostatistics, University of California San Francisco, San Francisco, California
| | - Huihui Ye
- Department of Pathology, University of California Los Angeles, Los Angeles, California
- Department of Urology, University of California Los Angeles, Los Angeles, California
| | - Jonathan W. Simons
- Science Department, Prostate Cancer Foundation, Santa Monica, California
| | - Kenneth J. Pienta
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins School of Medicine, Baltimore, Maryland
- Department of Urology, The James Buchanan Brady Urological Institute, Baltimore, Maryland
- Department of Pharmacology and Molecular Sciences, The Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Howard R. Soule
- Science Department, Prostate Cancer Foundation, Santa Monica, California
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Xu H, Sun Y, You B, Huang CP, Ye D, Chang C. Androgen receptor reverses the oncometabolite R-2-hydroxyglutarate-induced prostate cancer cell invasion via suppressing the circRNA-51217/miRNA-646/TGFβ1/p-Smad2/3 signaling. Cancer Lett 2019; 472:151-164. [PMID: 31846689 DOI: 10.1016/j.canlet.2019.12.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/06/2019] [Accepted: 12/10/2019] [Indexed: 01/19/2023]
Abstract
IDH1 (Isocitrate dehydrogenase 1) mutation occurring at codon 132 (R132) in prostate cancer (PCa) is considered as a classifier for a subgroup of PCas with accumulation of oncometabolite R-2HG (R-2-hydroxyglutarate). Here we found that adding R-2HG or the mutant IDH1 R132H could promote PCa cell invasion in androgen receptor (AR)-negative PC3 cells or suppressing the AR in AR-positive C4-2 cells. Mechanism dissection revealed that R-2HG could increase circRNA-51217 expression to sponge miRNA-646, which might then lead to increase TGFβ1 expression and thus induce TGFβ1/p-Smad2/3 signaling to increase PCa cell invasion. AR can suppress this R-2HG/circRNA-51217/miRNA-646/TGFβ1/p-Smad2/3 signaling-increased PCa cell invasion via repressing TGFβ1 transcription and inhibiting circRNA-51217 expression through regulating ADAR2 expression. Preclinical studies with an in vivo xenograft mouse model also revealed that PCa cells with the IDH1 R132H mutation have more invasive metastasis. This study demonstrates that IDH1 R132H mutation with increased oncometabolite R-2HG in PCa cells may play important roles to increase PCa cell invasion.
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Affiliation(s)
- Hua Xu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; George Whipple Lab for Cancer Research, Departments of Pathology, Urology, and Radiation Oncology, The Wilmot Cancer Center, University of Rochester, Rochester, NY, USA, 14646
| | - Yin Sun
- George Whipple Lab for Cancer Research, Departments of Pathology, Urology, and Radiation Oncology, The Wilmot Cancer Center, University of Rochester, Rochester, NY, USA, 14646
| | - Bosen You
- George Whipple Lab for Cancer Research, Departments of Pathology, Urology, and Radiation Oncology, The Wilmot Cancer Center, University of Rochester, Rochester, NY, USA, 14646
| | - Chi-Ping Huang
- Sex Hormone Research Center and Department of Urology, China Medical University, Taichung, 404, Taiwan
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
| | - Chawnshang Chang
- George Whipple Lab for Cancer Research, Departments of Pathology, Urology, and Radiation Oncology, The Wilmot Cancer Center, University of Rochester, Rochester, NY, USA, 14646; Sex Hormone Research Center and Department of Urology, China Medical University, Taichung, 404, Taiwan.
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12
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Wach S, Taubert H, Cronauer M. Role of androgen receptor splice variants, their clinical relevance and treatment options. World J Urol 2019; 38:647-656. [PMID: 30659302 DOI: 10.1007/s00345-018-02619-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 12/24/2018] [Indexed: 12/15/2022] Open
Abstract
PURPOSE In this review, we summarize the importance of AR variants with a particular focus on clinically relevant members of this family. METHODS A non-systematic literature review was performed based on Medline and PubMed. RESULTS Endocrine therapy represents the central paradigm for the management of prostate cancer. Eventually, in response to androgen ablation therapy, several resistance mechanisms against the endocrine therapy might develop that can circumvent the therapy approaches. One specific resistance mechanism that has gained increasing attention is the generation of alternatively spliced variants of the androgen receptor, with AR-V7 being the most prominent. More broadly, AR-V7 is one member of a group of alternatively spliced AR variants that share a common feature, the missing ligand-binding domain. These ΔLBD androgen receptor variants have shown the capability to induce androgen receptor-mediated gene transcription even under conditions of androgen deprivation and to drive cancer progression. CONCLUSION The methods used for detecting AR-Vs, at least on the mRNA level, are well-advanced and harbor the potential to be introduced into clinical diagnostics. It is important to note, that the testing, especially of AR-V7 has its limitations in predicting treatment response. More promising is the great number of active clinical trials aimed at reducing the AR-Vs, and using this to re-sensitize CRPC towards endocrine treatment might provide additional treatment options for CRPC patients in the future.
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MESH Headings
- Alternative Splicing
- Androgen Antagonists/therapeutic use
- Androstadienes/therapeutic use
- Antineoplastic Agents, Hormonal/therapeutic use
- Benzamides/therapeutic use
- Benzhydryl Compounds/therapeutic use
- Benzimidazoles/therapeutic use
- Benzoquinones/therapeutic use
- Binding Sites/genetics
- Chlorohydrins/therapeutic use
- Drug Resistance, Neoplasm/genetics
- Enzyme Inhibitors/therapeutic use
- Gene Expression Regulation, Neoplastic
- HSP90 Heat-Shock Proteins/antagonists & inhibitors
- Humans
- Isoindoles/therapeutic use
- Isoxazoles/therapeutic use
- Lactams, Macrocyclic/therapeutic use
- Male
- Niclosamide/therapeutic use
- Prostatic Neoplasms/drug therapy
- Prostatic Neoplasms/genetics
- Prostatic Neoplasms/metabolism
- Prostatic Neoplasms, Castration-Resistant/drug therapy
- Prostatic Neoplasms, Castration-Resistant/genetics
- Prostatic Neoplasms, Castration-Resistant/metabolism
- Protein Domains/genetics
- Protein Isoforms/genetics
- Protein Isoforms/metabolism
- Proteins/antagonists & inhibitors
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, Androgen/genetics
- Receptors, Androgen/metabolism
- Resorcinols/therapeutic use
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Affiliation(s)
- S Wach
- Department of Urology and Pediatric Urology, University Hospital Erlangen, Friedrich Alexander-University Erlangen-Nürnberg, Hartmannstrasse 14, 91054, Erlangen, Germany.
| | - H Taubert
- Department of Urology and Pediatric Urology, University Hospital Erlangen, Friedrich Alexander-University Erlangen-Nürnberg, Hartmannstrasse 14, 91054, Erlangen, Germany
| | - M Cronauer
- Department of Urology, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
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13
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Update on Systemic Prostate Cancer Therapies: Management of Metastatic Castration-resistant Prostate Cancer in the Era of Precision Oncology. Eur Urol 2019; 75:88-99. [DOI: 10.1016/j.eururo.2018.03.028] [Citation(s) in RCA: 252] [Impact Index Per Article: 50.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 03/23/2018] [Indexed: 11/19/2022]
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14
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Nuhn P, De Bono JS, Fizazi K, Freedland SJ, Grilli M, Kantoff PW, Sonpavde G, Sternberg CN, Yegnasubramanian S, Antonarakis ES. Update on Systemic Prostate Cancer Therapies: Management of Metastatic Castration-resistant Prostate Cancer in the Era of Precision Oncology. Eur Urol 2019. [DOI: 10.1016/j.eururo.2018.03.028 [internet]] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Hillebrand AC, Pizzolato LS, Branchini G, Brum IS. Androgenic modulation of AR-Vs. Endocrine 2018; 62:477-486. [PMID: 30027434 DOI: 10.1007/s12020-018-1682-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 07/09/2018] [Indexed: 12/11/2022]
Abstract
PURPOSE The importance of androgen receptor variants (AR-Vs) is recognized in prostate cancer. AR-Vs have been the focus of many studies. Expression of AR-Vs has been proposed as a biomarker for resistance to androgen deprivation therapy for metastatic disease. Herein, we show dynamic changes in AR-Vs expression in response to androgen modulation. METHODS The C4-2B cell line was exposed to low (10-13 M) and high (10-8 M) androgen (dihydrotestosterone, DHT) levels, with or without flutamide. mRNA and protein expression levels were assessed by qPCR and immunohistochemistry, respectively. RESULTS We demonstrated that high levels of DHT downregulate AR-FL and AR-Vs. Even though AR-Vs did not present ligand-binding domain, thus were not capable of binding to DHT, they present dynamic changes under androgen treatment. Treatment with flutamide alone or in association with low levels of DHT stimulates growth of prostatic cells. CONCLUSIONS Importantly, we provide evidence that AR-Vs respond differently to androgenic modulation. These findings have implications for a better understanding of the role of AR-Vs in prostate carcinogenesis.
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Affiliation(s)
- Ana Caroline Hillebrand
- Laboratory of Molecular Endocrine and Tumoral Biology, Department of Physiology, Institute of Basic Sciences of Health, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 90050-170, Brazil
| | - Lolita Schneider Pizzolato
- Laboratory of Molecular Endocrine and Tumoral Biology, Department of Physiology, Institute of Basic Sciences of Health, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 90050-170, Brazil
| | - Gisele Branchini
- Department of Basic Sciences of Health, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, 90050-170, Brazil
| | - Ilma Simoni Brum
- Laboratory of Molecular Endocrine and Tumoral Biology, Department of Physiology, Institute of Basic Sciences of Health, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 90050-170, Brazil.
- Laboratory of Molecular Obstetrics and Gynecology, Experimental Research Center, Department of Obstetrics and Gynecology, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 90035-903, Brazil.
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16
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Tsaur I, Becker C, Thelen P, Roos FC. [Splice variant AR-V7 : Is it time for its routine use as a predictive marker in prostate cancer?]. Urologe A 2017; 56:1164-1167. [PMID: 28702748 DOI: 10.1007/s00120-017-0461-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Androgen receptor splice variants (AR-Vs), if overexpressed, lack the ligand-binding domain conveying metastasized castration-resistant prostate cancer with a therapeutic resistance to androgen receptor signaling inhibitors. Particularly AR-V7 has recently been proposed as a potential predictive biomarker to identify patients who would probably benefit most from taxane-based cytotoxic treatment. Several assays to substantiate or quantify AR-V7 expression have recently been proposed. However, their broad clinical value is still debatable. This contemporary update aims to shed light on the current evidence in the field and draw distinct practical conclusions.
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Affiliation(s)
- I Tsaur
- Klinik für Urologie und Kinderurologie, Universitätsmedizin Mainz, Mainz, Deutschland.,Fachgruppe Molekulare Urologie der Arbeitsgruppe urologische Forschung der Deutschen Gesellschaft für Urologie, Düsseldorf, Deutschland
| | - C Becker
- Forschungskoordination, Deutsche Gesellschaft für Urologie e. V., Uerdinger Straße 64, 40474, Düsseldorf, Deutschland.
| | - P Thelen
- Klinik für Urologie, Universitätsmedizin Göttingen, Göttingen, Deutschland
| | - F C Roos
- Klinik für Urologie und Kinderurologie des Universitätsklinikums der Johann Wolfgang Goethe Universität Frankfurt, Frankfurt, Deutschland
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