1
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Yamada Y, Venkadakrishnan VB, Mizuno K, Bakht M, Ku SY, Garcia MM, Beltran H. Targeting DNA methylation and B7-H3 in RB1-deficient and neuroendocrine prostate cancer. Sci Transl Med 2023; 15:eadf6732. [PMID: 37967200 PMCID: PMC10954288 DOI: 10.1126/scitranslmed.adf6732] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 10/25/2023] [Indexed: 11/17/2023]
Abstract
Aberrant DNA methylation has been implicated as a key driver of prostate cancer lineage plasticity and histologic transformation to neuroendocrine prostate cancer (NEPC). DNA methyltransferases (DNMTs) are highly expressed, and global DNA methylation is dysregulated in NEPC. We identified that deletion of DNMT genes decreases expression of neuroendocrine lineage markers and substantially reduced NEPC tumor development and metastasis in vivo. Decitabine, a pan-DNMT inhibitor, attenuated tumor growth in NEPC patient-derived xenograft models, as well as retinoblastoma gene (RB1)-deficient castration-resistant prostate adenocarcinoma (CRPC) models compared with RB1-proficient CRPC. We further found that DNMT inhibition increased expression of B7 homolog 3 (B7-H3), an emerging druggable target, via demethylation of B7-H3. We tested DS-7300a (i-DXd), an antibody-drug conjugate targeting B7-H3, alone and in combination with decitabine in models of advanced prostate cancer. There was potent single-agent antitumor activity of DS-7300a in both CRPC and NEPC bearing high expression of B7-H3. In B7-H3-low models, combination therapy of decitabine plus DS-7300a resulted in enhanced response. DNMT inhibition may therefore be a promising therapeutic target for NEPC and RB1-deficient CRPC and may sensitize B7-H3-low prostate cancer to DS-7300a through increasing target expression. NEPC and RB1-deficient CRPC represent prostate cancer subgroups with poor prognosis, and the development of biomarker-driven therapeutic strategies for these populations may ultimately help improve patient outcomes.
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Affiliation(s)
- Yasutaka Yamada
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Harvard Medical School, Boston, MA 02215, USA
| | - Varadha Balaji Venkadakrishnan
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Harvard Medical School, Boston, MA 02215, USA
| | - Kei Mizuno
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Harvard Medical School, Boston, MA 02215, USA
| | - Martin Bakht
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Harvard Medical School, Boston, MA 02215, USA
| | - Sheng-Yu Ku
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Harvard Medical School, Boston, MA 02215, USA
| | - Maria Mica Garcia
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Harvard Medical School, Boston, MA 02215, USA
| | - Himisha Beltran
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Harvard Medical School, Boston, MA 02215, USA
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2
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Camilo V, Pacheco MB, Moreira-Silva F, Outeiro-Pinho G, Gaspar VM, Mano JF, Marques CJ, Henrique R, Jerónimo C. Novel Insights on the Role of Epigenetics in Androgen Receptor's Expression in Prostate Cancer. Biomolecules 2023; 13:1526. [PMID: 37892208 PMCID: PMC10605369 DOI: 10.3390/biom13101526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/04/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
The androgens/androgen receptor (AR) axis is the main therapeutic target in prostate cancer (PCa). However, while initially responsive, a subset of tumors loses AR expression through mechanisms putatively associated with epigenetic modifications. In this study, we assessed the link between the presence of CpG methylation in the 5'UTR and promoter regions of AR and loss of AR expression. Hence, we characterized and compared the methylation signature at CpG resolution of these regulatory regions in vitro, both at basal levels and following treatment with 5-aza-2-deoxycytidine (DAC) alone, or in combination with Trichostatin A (TSA). Our results showed heterogeneity in the methylation signature of AR negative cell lines and pinpointed the proximal promoter region as the most consistently methylated site in DU-145. Furthermore, this region was extremely resistant to the demethylating effects of DAC and was only significantly demethylated upon concomitant treatment with TSA. Nevertheless, no AR re-expression was detected at the mRNA or protein level. Importantly, after treatment, there was a significant increase in repressive histone marks at AR region 1 in DU-145 cells. Altogether, our data indicate that AR region 1 genomic availability is crucial for AR expression and that the inhibition of histone methyltransferases might hold promise for AR re-expression.
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Affiliation(s)
- Vânia Camilo
- Cancer Biology and Epigenetics Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Raquel Seruca, R. Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal; (V.C.); (M.B.P.); (F.M.-S.); (G.O.-P.); (R.H.)
| | - Mariana Brütt Pacheco
- Cancer Biology and Epigenetics Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Raquel Seruca, R. Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal; (V.C.); (M.B.P.); (F.M.-S.); (G.O.-P.); (R.H.)
| | - Filipa Moreira-Silva
- Cancer Biology and Epigenetics Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Raquel Seruca, R. Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal; (V.C.); (M.B.P.); (F.M.-S.); (G.O.-P.); (R.H.)
| | - Gonçalo Outeiro-Pinho
- Cancer Biology and Epigenetics Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Raquel Seruca, R. Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal; (V.C.); (M.B.P.); (F.M.-S.); (G.O.-P.); (R.H.)
| | - Vítor M. Gaspar
- CICECO—Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; (V.M.G.)
| | - João F. Mano
- CICECO—Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; (V.M.G.)
| | - C. Joana Marques
- Genetics Unit, Department of Pathology, Faculty of Medicine, University of Porto (FMUP), Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal;
- i3S-Institute for Research and Innovation in Health, University of Porto, R. Alfredo Allen 208, 4200-135 Porto, Portugal
| | - Rui Henrique
- Cancer Biology and Epigenetics Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Raquel Seruca, R. Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal; (V.C.); (M.B.P.); (F.M.-S.); (G.O.-P.); (R.H.)
- Department of Pathology, Portuguese Oncology Institute of Porto (IPO Porto), Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal
- Department of Pathology and Molecular Immunology, ICBAS-School of Medicine and Biomedical Sciences, University of Porto, Rua Jorge Viterbo Ferreira nº 228, 4050-313 Porto, Portugal
| | - Carmen Jerónimo
- Cancer Biology and Epigenetics Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Raquel Seruca, R. Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal; (V.C.); (M.B.P.); (F.M.-S.); (G.O.-P.); (R.H.)
- Department of Pathology and Molecular Immunology, ICBAS-School of Medicine and Biomedical Sciences, University of Porto, Rua Jorge Viterbo Ferreira nº 228, 4050-313 Porto, Portugal
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3
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Davies A, Zoubeidi A, Beltran H, Selth LA. The Transcriptional and Epigenetic Landscape of Cancer Cell Lineage Plasticity. Cancer Discov 2023; 13:1771-1788. [PMID: 37470668 PMCID: PMC10527883 DOI: 10.1158/2159-8290.cd-23-0225] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/25/2023] [Accepted: 06/09/2023] [Indexed: 07/21/2023]
Abstract
Lineage plasticity, a process whereby cells change their phenotype to take on a different molecular and/or histologic identity, is a key driver of cancer progression and therapy resistance. Although underlying genetic changes within the tumor can enhance lineage plasticity, it is predominantly a dynamic process controlled by transcriptional and epigenetic dysregulation. This review explores the transcriptional and epigenetic regulators of lineage plasticity and their interplay with other features of malignancy, such as dysregulated metabolism, the tumor microenvironment, and immune evasion. We also discuss strategies for the detection and treatment of highly plastic tumors. SIGNIFICANCE Lineage plasticity is a hallmark of cancer and a critical facilitator of other oncogenic features such as metastasis, therapy resistance, dysregulated metabolism, and immune evasion. It is essential that the molecular mechanisms of lineage plasticity are elucidated to enable the development of strategies to effectively target this phenomenon. In this review, we describe key transcriptional and epigenetic regulators of cancer cell plasticity, in the process highlighting therapeutic approaches that may be harnessed for patient benefit.
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Affiliation(s)
- Alastair Davies
- Oncology Research Discovery, Pfizer Worldwide Research and Development, San Diego, CA, USA
| | - Amina Zoubeidi
- Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
- Vancouver Prostate Centre, Vancouver, British Columbia, Canada
| | - Himisha Beltran
- Department of Medical Oncology, Dana Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Luke A. Selth
- Flinders Health and Medical Research Institute and Freemasons Centre for Male Health and Wellbeing, Flinders University, Bedford Park, South Australia, 5042 Australia
- Adelaide Medical School, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, South Australia, 5005 Australia
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4
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Imamura J, Ganguly S, Muskara A, Liao RS, Nguyen JK, Weight C, Wee CE, Gupta S, Mian OY. Lineage plasticity and treatment resistance in prostate cancer: the intersection of genetics, epigenetics, and evolution. Front Endocrinol (Lausanne) 2023; 14:1191311. [PMID: 37455903 PMCID: PMC10349394 DOI: 10.3389/fendo.2023.1191311] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 06/12/2023] [Indexed: 07/18/2023] Open
Abstract
Androgen deprivation therapy is a cornerstone of treatment for advanced prostate cancer, and the development of castrate-resistant prostate cancer (CRPC) is the primary cause of prostate cancer-related mortality. While CRPC typically develops through a gain in androgen receptor (AR) signaling, a subset of CRPC will lose reliance on the AR. This process involves genetic, epigenetic, and hormonal changes that promote cellular plasticity, leading to AR-indifferent disease, with neuroendocrine prostate cancer (NEPC) being the quintessential example. NEPC is enriched following treatment with second-generation anti-androgens and exhibits resistance to endocrine therapy. Loss of RB1, TP53, and PTEN expression and MYCN and AURKA amplification appear to be key drivers for NEPC differentiation. Epigenetic modifications also play an important role in the transition to a neuroendocrine phenotype. DNA methylation of specific gene promoters can regulate lineage commitment and differentiation. Histone methylation can suppress AR expression and promote neuroendocrine-specific gene expression. Emerging data suggest that EZH2 is a key regulator of this epigenetic rewiring. Several mechanisms drive AR-dependent castration resistance, notably AR splice variant expression, expression of the adrenal-permissive 3βHSD1 allele, and glucocorticoid receptor expression. Aberrant epigenetic regulation also promotes radioresistance by altering the expression of DNA repair- and cell cycle-related genes. Novel therapies are currently being developed to target these diverse genetic, epigenetic, and hormonal mechanisms promoting lineage plasticity-driven NEPC.
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Affiliation(s)
- Jarrell Imamura
- Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Shinjini Ganguly
- Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Andrew Muskara
- Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Ross S. Liao
- Glickman Urologic Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Jane K. Nguyen
- Glickman Urologic Institute, Cleveland Clinic, Cleveland, OH, United States
- Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Christopher Weight
- Glickman Urologic Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Christopher E. Wee
- Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Shilpa Gupta
- Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Omar Y. Mian
- Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, United States
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5
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Shen JS, Balaji U, Shigeyasu K, Okugawa Y, Jabbarzadeh-Tabrizi S, Day TS, Arning E, Marshall J, Cheng SH, Gu J, Schiffmann R, Bottiglieri T, Goel A. Dysregulated DNA methylation in the pathogenesis of Fabry disease. Mol Genet Metab Rep 2022; 33:100919. [PMID: 36186841 PMCID: PMC9519376 DOI: 10.1016/j.ymgmr.2022.100919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 09/21/2022] [Indexed: 12/05/2022] Open
Abstract
Fabry disease is an X-linked lysosomal storage disorder caused by a deficiency of α-galactosidase A and subsequent accumulation of glycosphingolipids with terminal α-D-galactosyl residues. The molecular process through which this abnormal metabolism of glycosphingolipids causes multisystem dysfunction in Fabry disease is not fully understood. We sought to determine whether dysregulated DNA methylation plays a role in the development of this disease. In the present study, using isogenic cellular models derived from Fabry patient endothelial cells, we tested whether manipulation of α-galactosidase A activity and glycosphingolipid metabolism affects DNA methylation. Bisulfite pyrosequencing revealed that changes in α-galactosidase A activity were associated with significantly altered DNA methylation in the androgen receptor promoter, and this effect was highly CpG loci-specific. Methylation array studies showed that α-galactosidase A activity and glycosphingolipid levels were associated with differential methylation of numerous CpG sites throughout the genome. We identified 15 signaling pathways that may be susceptible to methylation alterations in Fabry disease. By incorporating RNA sequencing data, we identified 21 genes that have both differential mRNA expression and methylation. Upregulated expression of collagen type IV alpha 1 and alpha 2 genes correlated with decreased methylation of these two genes. Methionine levels were elevated in Fabry patient cells and Fabry mouse tissues, suggesting that a perturbed methionine cycle contributes to the observed dysregulated methylation patterns. In conclusion, this study provides evidence that α-galactosidase A deficiency and glycosphingolipid storage may affect DNA methylation homeostasis and highlights the importance of epigenetics in the pathogenesis of Fabry disease and, possibly, of other lysosomal storage disorders.
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Affiliation(s)
- Jin-Song Shen
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, 3434 Live Oak Street, Dallas, TX 75024, United States of America
- Corresponding author at: 4D Molecular Therapeutics, 5858 Horton St., Suite 455, Emeryville, CA 94608, United States of America.
| | - Uthra Balaji
- Baylor Scott & White Research Institute, Biostatistics, Dallas, TX, United States of America
| | - Kunitoshi Shigeyasu
- Center for Gastrointestinal Research; Center for Epigenetics, Cancer Prevention and Cancer Genomics, Baylor Research Institute, Dallas, TX, United States of America
| | - Yoshinaga Okugawa
- Center for Gastrointestinal Research; Center for Epigenetics, Cancer Prevention and Cancer Genomics, Baylor Research Institute, Dallas, TX, United States of America
| | - Siamak Jabbarzadeh-Tabrizi
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, 3434 Live Oak Street, Dallas, TX 75024, United States of America
| | - Taniqua S. Day
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, 3434 Live Oak Street, Dallas, TX 75024, United States of America
| | - Erland Arning
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, 3434 Live Oak Street, Dallas, TX 75024, United States of America
| | - John Marshall
- Sanofi Genzyme, 49 New York Avenue, Framingham, MA 01701, United States of America
| | - Seng H. Cheng
- Sanofi Genzyme, 49 New York Avenue, Framingham, MA 01701, United States of America
| | - Jinghua Gu
- Baylor Scott & White Research Institute, Biostatistics, Dallas, TX, United States of America
| | - Raphael Schiffmann
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, 3434 Live Oak Street, Dallas, TX 75024, United States of America
| | - Teodoro Bottiglieri
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, 3434 Live Oak Street, Dallas, TX 75024, United States of America
| | - Ajay Goel
- Center for Gastrointestinal Research; Center for Epigenetics, Cancer Prevention and Cancer Genomics, Baylor Research Institute, Dallas, TX, United States of America
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6
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Makhov P, Fazliyeva R, Tufano A, Uzzo RG, Cai KQ, Serebriiskii I, Snyder NW, Andrews AJ, Kolenko VM. Acetyl-CoA Counteracts the Inhibitory Effect of Antiandrogens on Androgen Receptor Signaling in Prostate Cancer Cells. Cancers (Basel) 2022; 14:5900. [PMID: 36497382 PMCID: PMC9738902 DOI: 10.3390/cancers14235900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/24/2022] [Accepted: 11/27/2022] [Indexed: 12/02/2022] Open
Abstract
The commonly used therapeutic management of PC involves androgen deprivation therapy (ADT) followed by treatment with AR signaling inhibitors (ARSI). However, nearly all patients develop drug-resistant disease, with a median progression-free survival of less than 2 years in chemotherapy-naïve men. Acetyl-coenzyme A (acetyl-CoA) is a central metabolic signaling molecule with key roles in biosynthetic processes and cancer signaling. In signaling, acetyl-CoA serves as the acetyl donor for acetylation, a critical post-translational modification. Acetylation affects the androgen receptor (AR) both directly and indirectly increasing expression of AR dependent genes. Our studies reveal that PC cells respond to the treatment with ARSI by increasing expression of ATP-citrate lyase (ACLY), a major enzyme responsible for cytosolic acetyl-CoA synthesis, and up-regulation of acetyl-CoA intracellular levels. Inhibition of ACLY results in a significant suppression of ligand-dependent and -independent routes of AR activation. Accordingly, the addition of exogenous acetyl-CoA, or its precursor acetate, augments AR transcriptional activity and diminishes the anti-AR activity of ARSI. Taken together, our findings suggest that PC cells respond to antiandrogens by increasing activity of the acetyl-coA pathway in order to reinstate AR signaling.
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Affiliation(s)
- Peter Makhov
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Rushaniya Fazliyeva
- Cancer Signaling and Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Antonio Tufano
- Urology Unit, Department of Maternal-Child and Urological Sciences, “Sapienza” University of Rome, Viale del Policlinico 155, 00161 Rome, Italy
| | - Robert G. Uzzo
- Department of Surgical Oncology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Kathy Q. Cai
- Histopathology Facility, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Ilya Serebriiskii
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
- Kazan Federal University, 420000 Kazan, Russia
| | - Nathaniel W. Snyder
- Center for Metabolic Disease Research and the Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - Andrew J. Andrews
- Cancer Signaling and Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Vladimir M. Kolenko
- Cancer Signaling and Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
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7
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Johnson RP, Ratnacaram CK, Kumar L, Jose J. Combinatorial approaches of nanotherapeutics for inflammatory pathway targeted therapy of prostate cancer. Drug Resist Updat 2022; 64:100865. [PMID: 36099796 DOI: 10.1016/j.drup.2022.100865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/27/2022] [Accepted: 08/30/2022] [Indexed: 12/24/2022]
Abstract
Prostate cancer (PC) is the most prevalent male urogenital cancer worldwide. PC patients presenting an advanced or metastatic cancer succumb to the disease, even after therapeutic interventions including radiotherapy, surgery, androgen deprivation therapy (ADT), and chemotherapy. One of the hallmarks of PC is evading immune surveillance and chronic inflammation, which is a major challenge towards designing effective therapeutic formulations against PC. Chronic inflammation in PC is often characterized by tumor microenvironment alterations, epithelial-mesenchymal transition and extracellular matrix modifications. The inflammatory events are modulated by reactive nitrogen and oxygen species, inflammatory cytokines and chemokines. Major signaling pathways in PC includes androgen receptor, PI3K and NF-κB pathways and targeting these inter-linked pathways poses a major therapeutic challenge. Notably, many conventional treatments are clinically unsuccessful, due to lack of targetability and poor bioavailability of the therapeutics, untoward toxicity and multidrug resistance. The past decade witnessed an advancement of nanotechnology as an excellent therapeutic paradigm for PC therapy. Modern nanovectorization strategies such as stimuli-responsive and active PC targeting carriers offer controlled release patterns and superior anti-cancer effects. The current review initially describes the classification, inflammatory triggers and major inflammatory pathways of PC, various PC treatment strategies and their limitations. Subsequently, recent advancement in combinatorial nanotherapeutic approaches, which target PC inflammatory pathways, and the mechanism of action are discussed. Besides, the current clinical status and prospects of PC homing nanovectorization, and major challenges to be addressed towards the advancement PC therapy are also addressed.
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Affiliation(s)
- Renjith P Johnson
- Polymer Nanobiomaterial Research Laboratory, Nanoscience and Microfluidics Division, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018, India
| | - Chandrahas Koumar Ratnacaram
- Cell Signaling and Cancer Biology Division, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018, India
| | - Lalit Kumar
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Udupi, Karnataka 576 104, India
| | - Jobin Jose
- NITTE Deemed-to-be University, NGSM Institute of Pharmaceutical Sciences, Department of Pharmaceutics, Mangalore 575018, India.
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8
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Storck WK, May AM, Westbrook TC, Duan Z, Morrissey C, Yates JA, Alumkal JJ. The Role of Epigenetic Change in Therapy-Induced Neuroendocrine Prostate Cancer Lineage Plasticity. Front Endocrinol (Lausanne) 2022; 13:926585. [PMID: 35909568 PMCID: PMC9329809 DOI: 10.3389/fendo.2022.926585] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/19/2022] [Indexed: 11/23/2022] Open
Abstract
The androgen receptor (AR) signaling pathway is critical for growth and differentiation of prostate cancer cells. For that reason, androgen deprivation therapy with medical or surgical castration is the principal treatment for metastatic prostate cancer. More recently, new potent AR signaling inhibitors (ARSIs) have been developed. These drugs improve survival for men with metastatic castration-resistant prostate cancer (CRPC), the lethal form of the disease. However, ARSI resistance is nearly universal. One recently appreciated resistance mechanism is lineage plasticity or switch from an AR-driven, luminal differentiation program to an alternate differentiation program. Importantly, lineage plasticity appears to be increasing in incidence in the era of new ARSIs, strongly implicating AR suppression in this process. Lineage plasticity and shift from AR-driven tumors occur on a continuum, ranging from AR-expressing tumors with low AR activity to AR-null tumors that have activation of alternate differentiation programs versus the canonical luminal program found in AR-driven tumors. In many cases, AR loss coincides with the activation of a neuronal program, most commonly exemplified as therapy-induced neuroendocrine prostate cancer (t-NEPC). While genetic events clearly contribute to prostate cancer lineage plasticity, it is also clear that epigenetic events-including chromatin modifications and DNA methylation-play a major role. Many epigenetic factors are now targetable with drugs, establishing the importance of clarifying critical epigenetic factors that promote lineage plasticity. Furthermore, epigenetic marks are readily measurable, demonstrating the importance of clarifying which measurements will help to identify tumors that have undergone or are at risk of undergoing lineage plasticity. In this review, we discuss the role of AR pathway loss and activation of a neuronal differentiation program as key contributors to t-NEPC lineage plasticity. We also discuss new epigenetic therapeutic strategies to reverse lineage plasticity, including those that have recently entered clinical trials.
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Affiliation(s)
- William K. Storck
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, United States
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, United States
| | - Allison M. May
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, United States
- Department of Urology, University of Michigan, Ann Arbor, MI, United States
| | - Thomas C. Westbrook
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, United States
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, United States
| | - Zhi Duan
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, United States
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, United States
| | - Colm Morrissey
- Department of Urology, University of Washington, Seattle, WA, United States
| | - Joel A. Yates
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, United States
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, United States
| | - Joshi J. Alumkal
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, United States
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, United States
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9
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Histone Modification on Parathyroid Tumors: A Review of Epigenetics. Int J Mol Sci 2022; 23:ijms23105378. [PMID: 35628190 PMCID: PMC9140881 DOI: 10.3390/ijms23105378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/02/2022] [Accepted: 05/07/2022] [Indexed: 01/27/2023] Open
Abstract
Parathyroid tumors are very prevalent conditions among endocrine tumors, being the second most common behind thyroid tumors. Secondary hyperplasia can occur beyond benign and malignant neoplasia in parathyroid glands. Adenomas are the leading cause of hyperparathyroidism, while carcinomas represent less than 1% of the cases. Tumor suppressor gene mutations such as MEN1 and CDC73 were demonstrated to be involved in tumor development in both familiar and sporadic types; however, the epigenetic features of the parathyroid tumors are still a little-explored subject. We present a review of epigenetic mechanisms related to parathyroid tumors, emphasizing advances in histone modification and its perspective of becoming a promising area in parathyroid tumor research.
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10
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Muhammad A, Forcados GE, Katsayal BS, Bako RS, Aminu S, Sadiq IZ, Abubakar MB, Yusuf AP, Malami I, Faruk M, Ibrahim S, Pase PA, Ahmed S, Abubakar IB, Abubakar M, Yates C. Potential epigenetic modifications implicated in triple- to quadruple-negative breast cancer transition: a review. Epigenomics 2022; 14:711-726. [PMID: 35473304 DOI: 10.2217/epi-2022-0033] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Current research on triple-negative breast cancer (TNBC) has resulted in delineation into the quadruple-negative breast cancer (QNBC) subgroup. Epigenetic modifications such as DNA methylation, histone posttranslational modifications and associated changes in chromatin architecture have been implicated in breast cancer pathogenesis. Herein, the authors highlight genes with observed epigenetic modifications that are associated with more aggressive TNBC/QNBC pathogenesis and possible interventions. Advanced literature searches were done on PubMed/MEDLINE, Scopus and Google Scholar. The results suggest that nine epigenetically altered genes/differentially expressed proteins in addition to the downregulated androgen receptor are associated with TNBC aggressiveness and could be implicated in the TNBC to QNBC transition. Thus, restoring the normal expression of these genes via epigenetic reprogramming could be therapeutically beneficial to TNBC and QNBC patients.
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Affiliation(s)
- Aliyu Muhammad
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, P.M.B. 1044, Zaria, Kaduna State, Nigeria.,Center for Cancer Research, Department of Biology, Tuskegee University, Tuskegee, AL 36088, USA
| | | | - Babangida Sanusi Katsayal
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, P.M.B. 1044, Zaria, Kaduna State, Nigeria
| | - Rabiatu Suleiman Bako
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, P.M.B. 1044, Zaria, Kaduna State, Nigeria
| | - Suleiman Aminu
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, P.M.B. 1044, Zaria, Kaduna State, Nigeria
| | - Idris Zubairu Sadiq
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, P.M.B. 1044, Zaria, Kaduna State, Nigeria
| | - Murtala Bello Abubakar
- Department of Physiology, Usmanu Danfodiyo University, P.M.B 2254, Sokoto, Sokoto State, Nigeria.,Centre for Advanced Medical Research & Training (CAMRET), Usmanu Danfodiyo University, P.M.B 2254, Sokoto, Sokoto State, Nigeria
| | | | - Ibrahim Malami
- Department of Pharmacognosy & Ethnopharmacy, Faculty of Pharmaceutical Sciences, Usmanu Danfodiyo University, P.M.B 2254, Sokoto, Nigeria.,Centre for Advanced Medical Research & Training (CAMRET), Usmanu Danfodiyo University, P.M.B 2254, Sokoto, Sokoto State, Nigeria
| | - Mohammed Faruk
- Department of Pathology, Ahmadu Bello University, P.M.B. 1044, Zaria, Kaduna State, Nigeria
| | - Sani Ibrahim
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, P.M.B. 1044, Zaria, Kaduna State, Nigeria
| | - Peter Abur Pase
- Department of Surgery, Ahmadu Bello University, P.M.B. 1044, Zaria, Kaduna State, Nigeria
| | - Saad Ahmed
- Department of Pathology, Ahmadu Bello University, P.M.B. 1044, Zaria, Kaduna State, Nigeria
| | - Ibrahim Babangida Abubakar
- Deparment of Biochemistry, Kebbi State University of Science & Technology, PMB 1144, Aliero, Kebbi State, Nigeria
| | - Murtala Abubakar
- Department of Pathology, Ahmadu Bello University, P.M.B. 1044, Zaria, Kaduna State, Nigeria
| | - Clayton Yates
- Center for Cancer Research, Department of Biology, Tuskegee University, Tuskegee, AL 36088, USA
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11
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Sharma V, Joshi J, Yeh IJ, Doughman Y, Blankenberg D, Wald D, Montano MM. Re-Expression of ERα and AR in Receptor Negative Endocrine Cancers via GSK3 Inhibition. Front Oncol 2022; 12:824594. [PMID: 35402240 PMCID: PMC8988137 DOI: 10.3389/fonc.2022.824594] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 02/28/2022] [Indexed: 01/04/2023] Open
Abstract
DNA methylation, catalyzed by DNA methyltransferase (DNMT), is a well-characterized epigenetic modification in cancer cells. In particular, promoter hypermethylation of AR and ESR1 results in loss of expression on Androgen Receptor (AR) and Estrogen Receptor (ER), respectively, and is associated with a hormone refractory state. We now report that Glycogen Synthase Kinase 3 (GSK3) phosphorylates DNMT1 at S714, which is localized to a 62 amino acid region referred to as auto-inhibitory linker, which functions to occlude the DNA from the active site of DNMT1 to prevent the methylation of unmethylated DNA. Molecular Dynamics simulation indicates that phosphorylation at S714 resulted in conformational rearrangement of the autoinhibitory domain that inactivated its ability to block the methylation of unmethylated DNA and resulted in enhanced DNA binding. Treatment with a novel and more selective inhibitor of GSK3 resulted in decreased methylation of the promoter region of genes encoding the Androgen Receptor (AR) and Estrogen Receptor alpha (ERa) and re-expression of the AR and ERa in AR negative prostate cancer and ER negative breast cancer cells, respectively. As a result, concurrent treatment with the GSK3 inhibitor resulted in responsiveness of AR negative prostate cancer and ER negative breast cancer cells to inhibitors of the AR or ER, respectively, in in vitro and in vivo experimental models.
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Affiliation(s)
- Vikas Sharma
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Jayadev Joshi
- Genomic Medicine Institute, Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States
| | - I-Ju Yeh
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - YongQiu Doughman
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Daniel Blankenberg
- Genomic Medicine Institute, Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States
| | - David Wald
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Monica M. Montano
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, United States
- *Correspondence: Monica M. Montano,
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12
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Pardo JC, Ruiz de Porras V, Gil J, Font A, Puig-Domingo M, Jordà M. Lipid Metabolism and Epigenetics Crosstalk in Prostate Cancer. Nutrients 2022; 14:851. [PMID: 35215499 PMCID: PMC8874497 DOI: 10.3390/nu14040851] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/27/2022] [Accepted: 02/14/2022] [Indexed: 02/07/2023] Open
Abstract
Prostate cancer (PCa) is the most commonly diagnosed malignant neoplasm in men in the Western world. Localized low-risk PCa has an excellent prognosis thanks to effective local treatments; however, despite the incorporation of new therapeutic strategies, metastatic PCa remains incurable mainly due to disease heterogeneity and the development of resistance to therapy. The mechanisms underlying PCa progression and therapy resistance are multiple and include metabolic reprogramming, especially in relation to lipid metabolism, as well as epigenetic remodelling, both of which enable cancer cells to adapt to dynamic changes in the tumour. Interestingly, metabolism and epigenetics are interconnected. Metabolism can regulate epigenetics through the direct influence of metabolites on epigenetic processes, while epigenetics can control metabolism by directly or indirectly regulating the expression of metabolic genes. Moreover, epidemiological studies suggest an association between a high-fat diet, which can alter the availability of metabolites, and PCa progression. Here, we review the alterations of lipid metabolism and epigenetics in PCa, before focusing on the mechanisms that connect them. We also discuss the influence of diet in this scenario. This information may help to identify prognostic and predictive biomarkers as well as targetable vulnerabilities.
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Affiliation(s)
- Juan C. Pardo
- Department of Medical Oncology, Catalan Institute of Oncology, University Hospital Germans Trias i Pujol, Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain; (J.C.P.); (A.F.)
- Catalan Institute of Oncology, Badalona Applied Research Group in Oncology (B·ARGO), Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain;
| | - Vicenç Ruiz de Porras
- Catalan Institute of Oncology, Badalona Applied Research Group in Oncology (B·ARGO), Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain;
- Germans Trias i Pujol Research Institute (IGTP), Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain; (J.G.); (M.P.-D.)
| | - Joan Gil
- Germans Trias i Pujol Research Institute (IGTP), Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain; (J.G.); (M.P.-D.)
- Department of Endocrinology and Medicine, CIBERER U747, ISCIII, Research Center for Pituitary Diseases, Hospital Sant Pau, IIB-SPau, Universitat Autònoma de Barcelona, 08041 Barcelona, Spain
| | - Albert Font
- Department of Medical Oncology, Catalan Institute of Oncology, University Hospital Germans Trias i Pujol, Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain; (J.C.P.); (A.F.)
- Catalan Institute of Oncology, Badalona Applied Research Group in Oncology (B·ARGO), Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain;
| | - Manel Puig-Domingo
- Germans Trias i Pujol Research Institute (IGTP), Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain; (J.G.); (M.P.-D.)
- Department of Endocrinology and Nutrition, University Germans Trias i Pujol Hospital, Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain
- Department of Medicine, Autonomous University of Barcelona (UAB), Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain
| | - Mireia Jordà
- Germans Trias i Pujol Research Institute (IGTP), Ctra. Can Ruti-Camí de les Escoles s/n, 08916 Badalona, Spain; (J.G.); (M.P.-D.)
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13
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López J, Añazco-Guenkova AM, Monteagudo-García Ó, Blanco S. Epigenetic and Epitranscriptomic Control in Prostate Cancer. Genes (Basel) 2022; 13:genes13020378. [PMID: 35205419 PMCID: PMC8872343 DOI: 10.3390/genes13020378] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 02/12/2022] [Accepted: 02/16/2022] [Indexed: 12/19/2022] Open
Abstract
The initiation of prostate cancer has been long associated with DNA copy-number alterations, the loss of specific chromosomal regions and gene fusions, and driver mutations, especially those of the Androgen Receptor. Non-mutational events, particularly DNA and RNA epigenetic dysregulation, are emerging as key players in tumorigenesis. In this review we summarize the molecular changes linked to epigenetic and epitranscriptomic dysregulation in prostate cancer and the role that alterations to DNA and RNA modifications play in the initiation and progression of prostate cancer.
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Affiliation(s)
- Judith López
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC)—University of Salamanca, 37007 Salamanca, Spain; (J.L.); (A.M.A.-G.); (Ó.M.-G.)
- Instituto de Investigación Biomédica de Salamanca (IBSAL), Hospital Universitario de Salamanca, 37007 Salamanca, Spain
| | - Ana M. Añazco-Guenkova
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC)—University of Salamanca, 37007 Salamanca, Spain; (J.L.); (A.M.A.-G.); (Ó.M.-G.)
- Instituto de Investigación Biomédica de Salamanca (IBSAL), Hospital Universitario de Salamanca, 37007 Salamanca, Spain
| | - Óscar Monteagudo-García
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC)—University of Salamanca, 37007 Salamanca, Spain; (J.L.); (A.M.A.-G.); (Ó.M.-G.)
- Instituto de Investigación Biomédica de Salamanca (IBSAL), Hospital Universitario de Salamanca, 37007 Salamanca, Spain
| | - Sandra Blanco
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC)—University of Salamanca, 37007 Salamanca, Spain; (J.L.); (A.M.A.-G.); (Ó.M.-G.)
- Instituto de Investigación Biomédica de Salamanca (IBSAL), Hospital Universitario de Salamanca, 37007 Salamanca, Spain
- Correspondence:
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14
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Ylitalo EB, Thysell E, Landfors M, Brattsand M, Jernberg E, Crnalic S, Widmark A, Hultdin M, Bergh A, Degerman S, Wikström P. A novel DNA methylation signature is associated with androgen receptor activity and patient prognosis in bone metastatic prostate cancer. Clin Epigenetics 2021; 13:133. [PMID: 34193246 PMCID: PMC8244194 DOI: 10.1186/s13148-021-01119-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 06/20/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Patients with metastatic prostate cancer (PC) are treated with androgen deprivation therapy (ADT) that initially reduces metastasis growth, but after some time lethal castration-resistant PC (CRPC) develops. A better understanding of the tumor biology in bone metastases is needed to guide further treatment developments. Subgroups of PC bone metastases based on transcriptome profiling have been previously identified by our research team, and specifically, heterogeneities related to androgen receptor (AR) activity have been described. Epigenetic alterations during PC progression remain elusive and this study aims to explore promoter gene methylation signatures in relation to gene expression and tumor AR activity. MATERIALS AND METHODS Genome-wide promoter-associated CpG methylation signatures of a total of 94 tumor samples, including paired non-malignant and malignant primary tumor areas originating from radical prostatectomy samples (n = 12), and bone metastasis samples of separate patients with hormone-naive (n = 14), short-term castrated (n = 4) or CRPC (n = 52) disease were analyzed using the Infinium Methylation EPIC arrays, along with gene expression analysis by Illumina Bead Chip arrays (n = 90). AR activity was defined from expression levels of genes associated with canonical AR activity. RESULTS Integrated epigenome and transcriptome analysis identified pronounced hypermethylation in malignant compared to non-malignant areas of localized prostate tumors. Metastases showed an overall hypomethylation in relation to primary PC, including CpGs in the AR promoter accompanied with induction of AR mRNA levels. We identified a Methylation Classifier for Androgen receptor activity (MCA) signature, which separated metastases into two clusters (MCA positive/negative) related to tumor characteristics and patient prognosis. The MCA positive metastases showed low methylation levels of genes associated with canonical AR signaling and patients had a more favorable prognosis after ADT. In contrast, MCA negative patients had low AR activity associated with hypermethylation of AR-associated genes, and a worse prognosis after ADT. CONCLUSIONS A promoter methylation signature classifies PC bone metastases into two groups and predicts tumor AR activity and patient prognosis after ADT. The explanation for the methylation diversities observed during PC progression and their biological and clinical relevance need further exploration.
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Affiliation(s)
| | - Elin Thysell
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - Mattias Landfors
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - Maria Brattsand
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - Emma Jernberg
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - Sead Crnalic
- Department of Surgical and Perioperative Sciences, Orthopedics, Umeå University, Umeå, Sweden
| | - Anders Widmark
- Department of Radiation Sciences, Oncology, Umeå University, Umeå, Sweden
| | - Magnus Hultdin
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - Anders Bergh
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - Sofie Degerman
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
- Department of Clinical Microbiology, Umeå University, Umeå, Sweden
| | - Pernilla Wikström
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden.
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15
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Brennen WN, Zhu Y, Coleman IM, Dalrymple SL, Antony L, Patel RA, Hanratty B, Chikarmane R, Meeker AK, Zheng SL, Hooper JE, Luo J, De Marzo AM, Corey E, Xu J, Yegnasubramanian S, Haffner MC, Nelson PS, Nelson WG, Isaacs WB, Isaacs JT. Resistance to androgen receptor signaling inhibition does not necessitate development of neuroendocrine prostate cancer. JCI Insight 2021; 6:146827. [PMID: 33724955 PMCID: PMC8119192 DOI: 10.1172/jci.insight.146827] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/10/2021] [Indexed: 01/02/2023] Open
Abstract
Resistance to AR signaling inhibitors (ARSis) in a subset of metastatic castration-resistant prostate cancers (mCRPCs) occurs with the emergence of AR– neuroendocrine prostate cancer (NEPC) coupled with mutations/deletions in PTEN, TP53, and RB1 and the overexpression of DNMTs, EZH2, and/or SOX2. To resolve whether the lack of AR is the driving factor for the emergence of the NE phenotype, molecular, cell, and tumor biology analyses were performed on 23 xenografts derived from patients with PC, recapitulating the full spectrum of genetic alterations proposed to drive NE differentiation. Additionally, phenotypic response to CRISPR/Cas9-mediated AR KO in AR+ CRPC cells was evaluated. These analyses document that (a) ARSi-resistant NEPC developed without androgen deprivation treatment; (b) ARS in ARSi-resistant AR+/NE+ double-positive “amphicrine” mCRPCs did not suppress NE differentiation; (c) the lack of AR expression did not necessitate acquiring a NE phenotype, despite concomitant mutations/deletions in PTEN and TP53, and the loss of RB1 but occurred via emergence of an AR–/NE– double-negative PC (DNPC); (d) despite DNPC cells having homogeneous genetic driver mutations, they were phenotypically heterogeneous, expressing basal lineage markers alone or in combination with luminal lineage markers; and (e) AR loss was associated with AR promoter hypermethylation in NEPCs but not in DNPCs.
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Affiliation(s)
- W Nathaniel Brennen
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins University, Baltimore, Maryland, USA.,Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Yezi Zhu
- Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Ilsa M Coleman
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Susan L Dalrymple
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins University, Baltimore, Maryland, USA
| | - Lizamma Antony
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins University, Baltimore, Maryland, USA
| | - Radhika A Patel
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Brian Hanratty
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Roshan Chikarmane
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins University, Baltimore, Maryland, USA
| | - Alan K Meeker
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins University, Baltimore, Maryland, USA.,Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Pathology, SKCCC, Johns Hopkins University, Baltimore, Maryland, USA
| | - S Lilly Zheng
- Program for Personalized Cancer Care, North Shore University Health System, Evanston, Illinois, USA
| | - Jody E Hooper
- Department of Pathology, SKCCC, Johns Hopkins University, Baltimore, Maryland, USA
| | - Jun Luo
- Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Angelo M De Marzo
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins University, Baltimore, Maryland, USA.,Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Pathology, SKCCC, Johns Hopkins University, Baltimore, Maryland, USA
| | | | - Jianfeng Xu
- Program for Personalized Cancer Care, North Shore University Health System, Evanston, Illinois, USA
| | - Srinivasan Yegnasubramanian
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins University, Baltimore, Maryland, USA.,Department of Pathology, SKCCC, Johns Hopkins University, Baltimore, Maryland, USA
| | - Michael C Haffner
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Pathology, University of Washington, Seattle, Washington, USA
| | - Peter S Nelson
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Urology and
| | - William G Nelson
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins University, Baltimore, Maryland, USA.,Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Pathology, SKCCC, Johns Hopkins University, Baltimore, Maryland, USA
| | - William B Isaacs
- Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - John T Isaacs
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins University, Baltimore, Maryland, USA.,Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Pathology, SKCCC, Johns Hopkins University, Baltimore, Maryland, USA
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16
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PRMT5: a putative oncogene and therapeutic target in prostate cancer. Cancer Gene Ther 2021; 29:264-276. [PMID: 33854218 DOI: 10.1038/s41417-021-00327-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 03/05/2021] [Accepted: 03/23/2021] [Indexed: 11/08/2022]
Abstract
Protein arginine methyltransferase 5 (PRMT5) was discovered two decades ago. The first decade focused on the biochemical characterization of PRMT5 as a regulator of many cellular processes in a healthy organism. However, over the past decade, evidence has accumulated to suggest that PRMT5 may function as an oncogene in multiple cancers via both epigenetic and non-epigenetic mechanisms. In this review, we focus on recent progress made in prostate cancer, including the role of PRMT5 in the androgen receptor (AR) expression and signaling and DNA damage response, particularly DNA double-strand break repair. We also discuss how PRMT5-interacting proteins that are considered PRMT5 cofactors may cooperate with PRMT5 to regulate PRMT5 activity and target gene expression, and how PRMT5 can interact with other epigenetic regulators implicated in prostate cancer development and progression. Finally, we suggest that targeting PRMT5 may be employed to develop multiple therapeutic approaches to enhance the treatment of prostate cancer.
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17
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So SY, Savidge TC. Sex-Bias in Irritable Bowel Syndrome: Linking Steroids to the Gut-Brain Axis. Front Endocrinol (Lausanne) 2021; 12:684096. [PMID: 34093447 PMCID: PMC8170482 DOI: 10.3389/fendo.2021.684096] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/03/2021] [Indexed: 12/12/2022] Open
Abstract
Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder that is more common in females. Despite its high global incidence, the disease mechanism is still unclear and therapeutic options remain limited. The sexual dimorphism in IBS incidence suggests that sex steroids play a role in disease onset and symptoms severity. This review considers sex steroids and their involvement in IBS symptoms and the underlying disease mechanisms. Estrogens and androgens play important regulatory roles in IBS symptomology, including visceral sensitivity, gut motility and psychological conditions, possibly through modulating the gut-brain axis. Steroids are regulators of hypothalamic-pituitary-adrenal activity and autonomic nervous system function. They also modulate gut microbiota and enteric nervous systems, impacting serotonin and mast cell signaling. Sex steroids also facilitate bidirectional cross-talk between the microbiota and host following bacterial transformation and recycling of steroids by the intestine. The sex-specific interplay between sex steroids and the host provides neuroendocrinology insight into the pathophysiology, epigenetics and treatment of IBS patients.
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Affiliation(s)
- Sik Yu So
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, United States
- Texas Children’s Microbiome Center, Department of Pathology, Texas Children’s Hospital, Houston, TX, United States
| | - Tor C. Savidge
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, United States
- Texas Children’s Microbiome Center, Department of Pathology, Texas Children’s Hospital, Houston, TX, United States
- *Correspondence: Tor C. Savidge,
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18
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Formaggio N, Rubin MA, Theurillat JP. Loss and revival of androgen receptor signaling in advanced prostate cancer. Oncogene 2021; 40:1205-1216. [PMID: 33420371 PMCID: PMC7892335 DOI: 10.1038/s41388-020-01598-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/20/2020] [Accepted: 11/30/2020] [Indexed: 02/08/2023]
Abstract
Targeting the androgen receptor (AR) signaling axis has been, over decades, the mainstay of prostate cancer therapy. More potent inhibitors of androgen synthesis and antiandrogens have emerged and have been successfully implemented in clinical practice. That said, the stronger inhibition of the AR signaling axis has led in recent years to an increase of prostate cancers that de-differentiate into AR-negative disease. Unfortunately, this process is intimately linked with a poor prognosis. Here, we review the molecular mechanisms that enable cancer cells to switch from an AR-positive to an AR-negative disease and efforts to prevent/revert this process and thereby maintain/restore AR-dependence.
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Affiliation(s)
- Nicolò Formaggio
- grid.29078.340000 0001 2203 2861Institute of Oncology Research, Università della Svizzera italiana, Lugano, Switzerland
| | - Mark A. Rubin
- grid.5734.50000 0001 0726 5157Department for BioMedical Research and Bern Center of Precision Medicine, University of Bern and Inselspital, Bern, Switzerland
| | - Jean-Philippe Theurillat
- grid.29078.340000 0001 2203 2861Institute of Oncology Research, Università della Svizzera italiana, Lugano, Switzerland
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19
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Sharma V, Montano MM. Non-epigenetic induction of HEXIM1 by DNMT1 inhibitors and functional relevance. Sci Rep 2020; 10:21015. [PMID: 33273553 PMCID: PMC7713402 DOI: 10.1038/s41598-020-78058-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 11/17/2020] [Indexed: 11/09/2022] Open
Abstract
We have been studying the role of Hexamethylene bisacetamide (HMBA) Induced Protein 1 (HEXIM1) as a tumor suppressor whose expression is decreased in breast and prostate cancer. The anti-cancer actions of HEXIM1 in melanomas and AML have been reported by other groups. Previous studies have shown that 5-Aza-2'deoxycytidine (5-AzadC), a DNMT1 inhibitor, induces re-expression of tumor suppressor genes by removing/erasing methylation marks from their promoters. Our studies highlighted another mechanism wherein 5-AzadC induced DNA damage, which then resulted in enhanced occupancy of NF-ĸB, P-TEFb, and serine 2 phosphorylated RNA Polymerase II on the HEXIM1 gene. As a consequence, 5-AzadC induced HEXIM1 expression in prostate cancer cell lines and triple negative breast cancers. 5-AzadC-induced DNA damage enhanced P-TEFb occupancy via a mechanism that involved activation of ATR and ATM and induction of NF-ĸB recruitment to the HEXIM1 promoter. Downregulation of NF-ĸB attenuated 5-AzadC-induced HEXIM1 expression in prostate and breast cancer cells. The functional relevance of 5-AzadC-induced HEXIM1 expression is revealed by studies showing the HEXIM1 is required for the induction of apoptosis. Collectively, our findings support a non-epigenetic mechanism for 5-AzadC-induced re-expression of HEXIM1 protein, and may contribute to the clinical efficacy of 5-AzadC.
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Affiliation(s)
- Vikas Sharma
- Department of Pharmacology, School of Medicine, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH, 44106, USA
| | - Monica M Montano
- Department of Pharmacology, School of Medicine, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH, 44106, USA.
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Akoto T, Bhagirath D, Saini S. MicroRNAs in treatment-induced neuroendocrine differentiation in prostate cancer. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2020; 3:804-818. [PMID: 33426506 PMCID: PMC7793563 DOI: 10.20517/cdr.2020.30] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Prostate cancer is a condition commonly associated with men worldwide. Androgen deprivation therapy remains one of the targeted therapies. However, after some years, there is biochemical recurrence and metastatic progression into castration-resistant prostate cancer (CRPC). CRPC cases are treated with second-line androgen deprivation therapy, after which, these CRPCs transdifferentiate to form neuroendocrine prostate cancer (NEPC), a highly aggressive variant of CRPC. NEPC arises via a reversible transdifferentiation process, known as neuroendocrine differentiation (NED), which is associated with altered expression of lineage markers such as decreased expression of androgen receptor and increased expression of neuroendocrine lineage markers including enolase 2, chromogranin A and synaptophysin. The etiological factors and molecular basis for NED are poorly understood, contributing to a lack of adequate molecular biomarkers for its diagnosis and therapy. Therefore, there is a need to fully understand the underlying molecular basis for this cancer. Recent studies have shown that microRNAs (miRNAs) play a key epigenetic role in driving therapy-induced NED in prostate cancer. In this review, we briefly describe the role of miRNAs in prostate cancer and CRPCs, discuss some key players in NEPCs and elaborate on miRNA dysregulation as a key epigenetic process that accompanies therapy-induced NED in metastatic CRPC. This understanding will contribute to better clinical management of the disease.
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Affiliation(s)
- Theresa Akoto
- Department of Cellular Biology and Anatomy, Augusta University, Augusta, GA 30912, USA
| | - Divya Bhagirath
- Department of Biochemistry and Molecular Biology, Augusta University, Augusta, GA 30912, USA
| | - Sharanjot Saini
- Department of Biochemistry and Molecular Biology, Augusta University, Augusta, GA 30912, USA
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Vellky JE, Ricke WA. Development and prevalence of castration-resistant prostate cancer subtypes. Neoplasia 2020; 22:566-575. [PMID: 32980775 PMCID: PMC7522286 DOI: 10.1016/j.neo.2020.09.002] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 09/01/2020] [Accepted: 09/03/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Castration-resistant prostate cancer (CRPC) occurs when prostate cancer (CaP) progresses under therapy-induced castrate conditions. Several mechanisms have been proposed to explain this acquired resistance, many of which are driven by androgen receptor (AR). Recent findings, however, sub-classified CRPC by downregulation/absence of AR in certain subtypes that consequently do not respond to anti-androgen therapies. To highlight the significance of CRPC sub-classification, we reviewed the development and treatment of CRPC, AR downregulation in CRPC, and summarized recent reports on the prevalence of CRPC subtypes. METHODS Using a medline-based literature search, we reviewed mechanisms of CRPC development, current treatment schemes, and assessed the prevalence of AR low/negative subtypes of CRPC. Additionally, we performed immunohistochemical staining on human CRPC specimens to quantify AR expression across CRPC subtypes. RESULTS In the majority of cases, CRPC continues to rely on AR signaling, which can be augmented in castrate-conditions through a variety of mechanisms. However, recently low/negative AR expression patterns were identified in a significant proportion of patient samples from a multitude of independent studies. In these AR low/negative cases, we postulated that AR protein may be downregulated by (1) promoter methylation, (2) transcriptional regulation, (3) post-transcriptional regulation by microRNA or RNA-binding-proteins, or (4) post-translational ubiquitination-mediated degradation. CONCLUSIONS Here, we discussed mechanisms of CRPC development and summarized the overall prevalence of CRPC subtypes; interestingly, AR low/negative CRPC represented a considerable proportion of diagnoses. Because these subtypes cannot be effectively treated with AR-targeted therapeutics, a better understanding of AR low/negative subtypes could lead to better treatment strategies and increased survival.
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Affiliation(s)
- Jordan E Vellky
- Department of Urology, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI 53705, USA; Cancer Biology Graduate Program, University of Wisconsin-Madison, Wisconsin Institute for Medical Research, 1111 Highland Ave., Madison, WI 53705, USA; Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave., Madison, WI 53705, USA
| | - William A Ricke
- Department of Urology, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI 53705, USA; Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave., Madison, WI 53705, USA; George M. O'Brien Research Center of Excellence, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI 53705, USA.
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Vellky JE, Bauman TM, Ricke EA, Huang W, Ricke WA. Incidence of androgen receptor and androgen receptor variant 7 coexpression in prostate cancer. Prostate 2019; 79:1811-1822. [PMID: 31503366 PMCID: PMC7339117 DOI: 10.1002/pros.23906] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 08/26/2019] [Indexed: 01/22/2023]
Abstract
BACKGROUND Prostate cancer (PRCA) is an androgen-driven disease, where androgens act through the androgen receptor (AR) to induce proliferation and survival of tumor cells. Recently, AR splice variant 7 (ARv7) has been implicated in advanced stages of PRCA and clinical recurrence. With the widespread use of AR-targeted therapies, there has been a rising interest in the expression of full-length AR and ARv7 in PRCA progression and how these receptors, both independently and together, contribute to adverse clinicopathologic outcomes. METHODS Despite a multitude of studies measuring the expression levels of AR and ARv7 in PRCA progression, the results have been inconsistent and sometimes contradictory due to technical and analytical discrepancies. To circumvent these inconsistencies, we used an automated multiplexed immunostaining platform for full-length AR and ARv7 in human PRCA samples and objectively quantified expression changes with machine learning-based software. With this technology, we can assess receptor prevalence both independently, and coexpressed, within specific tissue and cellular compartments. RESULTS Full-length AR and ARv7 expression increased in epithelial nuclei of metastatic samples compared to benign. Interestingly, a population of cells with undetectable AR persisted through all stages of PRCA progression. Coexpression analyses showed an increase of the double-positive (AR+ /ARv7+ ) population in metastases compared to benign, and an increase of the double-negative population in PRCA samples compared to benign. Importantly, analysis of clinicopathologic outcomes associated with AR/ARv7 coexpression showed a significant decrease in the double-positive population with higher Gleason score (GS), as well as in samples with recurrence in under 5 years. Conversely, the double-negative population was significantly increased in samples with higher GS and in samples with recurrence in under 5 years. CONCLUSIONS Changes in AR and ARv7 coexpression may have prognostic value in PRCA progression and recurrence. A better understanding of the prevalence and clinicopathologic outcomes associated with changes in these receptors' coexpression may provide a foundation for improved diagnosis and therapy for men with PRCA.
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Affiliation(s)
- Jordan E. Vellky
- Department of Urology, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI, USA, 53705
- Cancer Biology Graduate Program, University of Wisconsin-Madison, Wisconsin Institute for Medical Research, 1111 Highland Ave., Madison, WI, USA, 53705
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave., Madison, WI, USA, 53705
| | - Tyler M. Bauman
- Department of Urology, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI, USA, 53705
- Division of Urology, Washington University School of Medicine, 4921 Parkview Pl., St. Louis, MO, USA 63110
| | - Emily A. Ricke
- Department of Urology, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI, USA, 53705
- George M. O’Brien Research Center of Excellence, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI, USA, 53705
| | - Wei Huang
- George M. O’Brien Research Center of Excellence, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI, USA, 53705
- Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, 1111 Highland Ave, Madison, WI, USA 53705
| | - William A. Ricke
- Department of Urology, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI, USA, 53705
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave., Madison, WI, USA, 53705
- George M. O’Brien Research Center of Excellence, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI, USA, 53705
- Corresponding Author: Dr. William Ricke, Director of Research, Department of Urology, 7107 Wisconsin Institute of Medical Research, University of Wisconsin, 1111 Highland Ave, Madison, WI, USA 53705. Office 608-265-3202 Fax 608-265-0614,
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Guo X, Puttabyatappa M, Thompson RC, Padmanabhan V. Developmental Programming: Contribution of Epigenetic Enzymes to Antral Follicular Defects in the Sheep Model of PCOS. Endocrinology 2019; 160:2471-2484. [PMID: 31398247 PMCID: PMC6760338 DOI: 10.1210/en.2019-00389] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 07/22/2019] [Indexed: 12/27/2022]
Abstract
Prenatal testosterone (T)-treated sheep, similar to women with polycystic ovary syndrome (PCOS), manifest oligo-/anovulation, hyperandrogenism, and polyfollicular ovary. The polyfollicular ovarian morphology, a result of persistence of antral follicles, arises, in part, by transcriptional changes in key mediators of follicular development that, in turn, are driven by epigenetic mechanisms. We hypothesized that prenatal T excess induces, in a cell-specific manner, transcriptional changes in key mediators of follicular development associated with relevant changes in epigenetic machinery. Expression levels of key mediators of follicular development, DNA methyltransferases (DNMTs), and histone de-/methylases and de-/acetylases were determined in laser-capture microdissection-isolated antral follicular granulosa and theca and ovarian stromal cells from 21 months of age control and prenatal T-treated sheep (100 mg IM twice weekly from gestational day 30 to 90; term: 147 days). Changes in histone methylation were determined by immunofluorescence. Prenatal T treatment induced the following: (i) cell-specific changes in gene expression of key mediators of follicular development and steroidogenesis; (ii) granulosa, theca, and stromal cell-specific changes in DNMTs and histone de-/methylases and deacetylases, and (iii) increases in histone 3 trimethylation at lysine 9 in granulosa and histone 3 dimethylation at lysine 4 in theca cells. The pattern of histone methylation was consistent with the expression profile of histone de-/methylases in the respective cells. These findings suggest that changes in expression of key genes involved in the development of the polyfollicular phenotype in prenatal T-treated sheep are mediated, at least in part, by cell-specific changes in epigenetic-modifying enzymes.
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Affiliation(s)
- Xingzi Guo
- Department of Obstetrics and Gynecology, Xiangya Third Hospital, Central South University, Changsha, Hunan, People’s Republic of China
- Department of Pediatrics, University of Michigan, Ann Arbor, Michigan
| | | | - Robert C Thompson
- Department of Psychiatry, University of Michigan, Ann Arbor, Michigan
| | - Vasantha Padmanabhan
- Department of Pediatrics, University of Michigan, Ann Arbor, Michigan
- Correspondence: Vasantha Padmanabhan, PhD, Department of Pediatrics, University of Michigan, 7510 MSRB 1, 1500 West Medical Center Drive, Ann Arbor, Michigan 48109. E-mail:
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Hornig NC, Rodens P, Dörr H, Hubner NC, Kulle AE, Schweikert HU, Welzel M, Bens S, Hiort O, Werner R, Gonzalves S, Eckstein AK, Cools M, Verrijn-Stuart A, Stunnenberg HG, Siebert R, Ammerpohl O, Holterhus PM. Epigenetic Repression of Androgen Receptor Transcription in Mutation-Negative Androgen Insensitivity Syndrome (AIS Type II). J Clin Endocrinol Metab 2018; 103:4617-4627. [PMID: 30124873 DOI: 10.1210/jc.2018-00052] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 08/13/2018] [Indexed: 11/19/2022]
Abstract
CONTEXT Inactivating mutations within the AR gene are present in only ~40% of individuals with clinically and hormonally diagnosed androgen insensitivity syndrome (AIS). Previous studies revealed the existence of an AR gene mutation-negative group of patients with AIS who have compromised androgen receptor (AR) function (AIS type II). OBJECTIVE To investigate whether AIS type II can be due to epigenetic repression of AR transcription. DESIGN Quantification of AR mRNA and AR proximal promoter CpG methylation levels in genital skin-derived fibroblasts (GFs) derived from patients with AIS type II and control individuals. SETTING University hospital endocrine research laboratory. PATIENTS GFs from control individuals (n = 11) and patients with AIS type II (n = 14). MAIN OUTCOME MEASURE(S) Measurement of AR mRNA and AR promoter CpG methylation as well as activity of AR proximal promoter in vitro. RESULTS Fifty-seven percent of individuals with AIS type II (n = 8) showed a reduced AR mRNA expression in their GFs. A significant inverse correlation was shown between AR mRNA abundance and methylation at two consecutive CpGs within the proximal AR promoter. Methylation of a 158-bp-long region containing these CpGs was sufficient to severely reduce reporter gene expression. This region was bound by the runt related transcription factor 1 (RUNX1). Ectopic expression of RUNX1 in HEK293T cells was able to inhibit reporter gene expression through this region. CONCLUSIONS Aberrant CpGs methylation within the proximal AR promoter plays an important role in the control of AR gene expression and may result in AIS type II. We suggest that transcriptional modifiers, such as RUNX1, could play roles therein offering new perspectives for understanding androgen-mediated endocrine diseases.
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Affiliation(s)
- Nadine C Hornig
- Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
- Institute of Human Genetics, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Pascal Rodens
- Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Helmuth Dörr
- Department of Pediatrics, University Erlangen, Erlangen, Germany
| | - Nina C Hubner
- Institute for Brain, Cognition and Behaviour-Centre for Neuroscience, GL Nijmegen, Netherlands
| | - Alexandra E Kulle
- Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Hans-Udo Schweikert
- Institute of Biochemistry and Molecular Biology, University of Bonn, Bonn, Germany
- Department of Internal Medicine, Division III, Universitätsklinikum Bonn, Bonn, Germany
| | - Maik Welzel
- Gemeinschaftspraxis für Kinder- und Jugendmedizin, Eckernförde, Germany
| | - Susanne Bens
- Institute of Human Genetics, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
- Institute of Human Genetics, Ulm University and Ulm University Medical Center, Ulm, Germany
| | - Olaf Hiort
- Department of Pediatrics, Division of Pediatric Endocrinology, University Luebeck, Luebeck, Germany
| | - Ralf Werner
- Department of Pediatrics, Division of Pediatric Endocrinology, University Luebeck, Luebeck, Germany
| | - Susanne Gonzalves
- Department of Pediatrics, Diakonissen-Stiftungs-Krankenhaus, Speyer, Germany
| | | | - Martine Cools
- Department of Pediatric Endocrinology, Ghent University Hospital, Ghent University, Ghent, Belgium
| | | | | | - Reiner Siebert
- Institute of Human Genetics, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
- Institute of Human Genetics, Ulm University and Ulm University Medical Center, Ulm, Germany
| | - Ole Ammerpohl
- Institute of Human Genetics, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
- Institute of Human Genetics, Ulm University and Ulm University Medical Center, Ulm, Germany
| | - Paul-Martin Holterhus
- Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
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Estrogens and prostate cancer. Prostate Cancer Prostatic Dis 2018; 22:185-194. [PMID: 30131606 DOI: 10.1038/s41391-018-0081-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 06/30/2018] [Accepted: 07/13/2018] [Indexed: 01/06/2023]
Abstract
BACKGROUND Hormonal influences such as androgens and estrogens are known contributors in the development and progression of prostate cancer (CaP). While much of the research to the hormonal nature of CaP has focused on androgens, estrogens also have critical roles in CaP development, physiology as well as a potential therapeutic intervention. METHODS In this review, we provide a critical literature review of the current basic science and clinical evidence for the interaction between estrogens and CaP. RESULTS Estrogenic influences in CaP include synthetic, endogenous, fungi and plant-derived compounds, and represent a family of sex hormones, which cross hydrophobic cell membranes and bind to membrane-associated receptors and estrogen receptors that localize to the nucleus triggering changes in gene expression in various organ systems. CONCLUSIONS Estrogens represent a under-recognized contributor in CaP development and progression. Further research in this topic may provide opportunities for identification of environmental influencers as well as providing novel therapeutic targets in the treatment of CaP.
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Fusi A, Procopio G, Della Torre S, Ricotta R, Bianchini G, Salvioni R, Ferrari L, Martinetti A, Savelli G, Villa S, Bajetta E. Treatment Options in Hormone-refractory Metastatic Prostate Carcinoma. TUMORI JOURNAL 2018; 90:535-46. [PMID: 15762353 DOI: 10.1177/030089160409000601] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Prostate cancer represents one of the most important health problems in industrialized countries. It is the second leading cause of cancer-related death in the United States. Therapeutic options are different according to the stage of the disease at the diagnosis. Patients with localized disease may be treated with surgery or radiation, whereas the treatment for patients with a metastatic disease is purely palliative. Hormonal treatment represents the standard therapy for stage IV prostate cancer, but patients ultimately become unresponsive to androgen ablation and are classified as hormone-refractory prostate cancer patients. The molecular mechanisms involved in progression in hormone resistance are characterized by mutations, down and up-regulation in the androgen receptor gene, mutations in p53 and over-expression of Bcl2 and other alterations in genes and in gene expression. The important thing is that we understand these mechanisms to define potential therapeutic agents for the treatment of hormone-refractory prostate cancer patients. Conventional options for patients with hormone-refractory prostate cancer include secondary hormone therapy, radiotherapy and cytotoxic chemotherapy. The commonest antineoplastic agents are mitoxantrone, estramustine and taxanes. Despite an improvement In the palliative benefit, none of these agents has demonstrated a beneficial impact on the overall survival of patients. Therefore, there is no standard therapy for these patients, thus we need new approaches which should be studied in clinical trials. The evaluation and incorporation of new agents into current treatment regimens could have a role in the treatment of hormone-refractory prostate cancer, but their efficacy has not yet been demonstrated.
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Affiliation(s)
- Alberto Fusi
- Medical Oncology Unit B, National Institute for the Study and the Treatment of Tumors, Milan, Italy
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Singh AN, Sharma N. Identification of key pathways and genes with aberrant methylation in prostate cancer using bioinformatics analysis. Onco Targets Ther 2017; 10:4925-4933. [PMID: 29066912 PMCID: PMC5644600 DOI: 10.2147/ott.s144725] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Prostate cancer (PCa), a multifocal clinically heterogeneous disease, is the most commonly diagnosed non-cutaneous neoplasm in men worldwide. The epigenome of PCa is a typical representation of catastrophic model of epigenetic alterations during tumorigenesis and its progression. Alterations in methylation patterns in tumor suppressors, cell cycle, oncogenes and metabolism-related genes are the most commonly observed epigenetic alterations in PCa. In this study, we have developed a computational strategy to identify methylated biomarker signature panels as potential targets of PCa by screening >160 genes reported to be epigenetically dysregulated, and shortlisted 26 differentially methylated genes (DMGs) that significantly contribute to oncogenesis. The gene ontology and functional enrichment analysis were performed, which showed that identified DMGs contribute to cellular and metabolic processes such as cell communication, cell cycle, response to drugs, apoptosis and p53 signaling. The top hub genes AR, CDH13, CDKN2A, DAPK1, GSTP1, CD44 and RASSF1 identified from protein-protein interaction network construction using Search Tool for the Retrieval of Interacting Genes contributed to hormonal response, inflammatory response, cell cycle, reactive oxygen species activity and receptor kinase activity, which are related to hallmarks of cancer as revealed by their functional enrichment analysis by Cytoscape. These genes were further scrutinized for CpG islands, transcription start sites and positions of methylated cytosines to study their methylation profiles. Our analysis revealed high negative correlation values between methylation frequencies and gene expressions of the hub genes, namely, AR, CDH13, CDKN2A, DAPK1, CD44, GSTP1 and RASSF1, which can be used as potential diagnostic biomarkers for PCa.
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Affiliation(s)
- Anshika N Singh
- Symbiosis School of Biological Sciences, Symbiosis International University, Gram – Lavale, Taluka – Mulshi, Pune, India
| | - Neeti Sharma
- Symbiosis School of Biological Sciences, Symbiosis International University, Gram – Lavale, Taluka – Mulshi, Pune, India
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28
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Spangle JM, Roberts TM. Epigenetic regulation of RTK signaling. J Mol Med (Berl) 2017; 95:791-798. [PMID: 28589435 DOI: 10.1007/s00109-017-1546-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/04/2017] [Accepted: 05/09/2017] [Indexed: 01/03/2023]
Abstract
Receptor tyrosine kinase (RTK) signaling cascades coordinate intracellular signaling in response to growth factors, chemokines, and other extracellular stimuli to control fundamental biological processes such as cellular proliferation, metabolism, and survival. Hyperactivation of pathways associated with growth factor signaling (e.g., RTK and downstream effectors including Ras, PI3K/AKT, and Raf) is a frequent event in human cancers, which uncouples ligand-mediated activation with signal transduction. While the contributions of direct genomic events are well understood as causative agents of hyperactive signal transduction, other non-heritable genomic modifications promote the activation of growth factor-associated signaling cascades. In this review, we highlight epigenomic mechanisms by which hyperactivation of RTK-associated signaling cascades occurs and may contribute to cancer.
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Affiliation(s)
- Jennifer M Spangle
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Thomas M Roberts
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA. .,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA. .,Dana-Farber Cancer Institute, Boston, MA, 02115, USA.
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Massie CE, Mills IG, Lynch AG. The importance of DNA methylation in prostate cancer development. J Steroid Biochem Mol Biol 2017; 166:1-15. [PMID: 27117390 DOI: 10.1016/j.jsbmb.2016.04.009] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Revised: 04/09/2016] [Accepted: 04/17/2016] [Indexed: 02/08/2023]
Abstract
After briefly reviewing the nature of DNA methylation, its general role in cancer and the tools available to interrogate it, we consider the literature surrounding DNA methylation as relating to prostate cancer. Specific consideration is given to recurrent alterations. A list of frequently reported genes is synthesized from 17 studies that have reported on methylation changes in malignant prostate tissue, and we chart the timing of those changes in the diseases history through amalgamation of several previously published data sets. We also review associations with genetic alterations and hormone signalling, before the practicalities of investigating prostate cancer methylation using cell lines are assessed. We conclude by outlining the interplay between DNA methylation and prostate cancer metabolism and their regulation by androgen receptor, with a specific discussion of the mitochondria and their associations with DNA methylation.
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Affiliation(s)
- Charles E Massie
- Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge, UK
| | - Ian G Mills
- Prostate Cancer Research Group, Centre for Molecular Medicine (Norway), University of Oslo and Oslo University Hospitals, Gaustadalleen, Oslo, Norway; Department of Molecular Oncology, Oslo University Hospitals, Oslo, Norway; PCUK/Movember Centre of Excellence for Prostate Cancer Research, Centre for Cancer Research and Cell Biology (CCRCB), Queen's University Belfast, Belfast, UK
| | - Andy G Lynch
- Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge, UK.
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Epigenetic basis of cancer health disparities: Looking beyond genetic differences. Biochim Biophys Acta Rev Cancer 2017; 1868:16-28. [PMID: 28108348 DOI: 10.1016/j.bbcan.2017.01.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 01/07/2017] [Accepted: 01/16/2017] [Indexed: 12/18/2022]
Abstract
Despite efforts at various levels, racial health disparities still exist in cancer patients. These inequalities in incidence and/or clinical outcome can only be explained by a multitude of factors, with genetic basis being one of them. Several investigations have provided convincing evidence to support epigenetic regulation of cancer-associated genes, which results in the differential transcriptome and proteome, and may be linked to a pre-disposition of individuals of certain race/ethnicity to early or more aggressive cancers. Recent technological advancements and the ability to quickly analyze whole genome have aided in these efforts, and owing to their relatively easy detection, methylation events are much well-characterized, than the acetylation events, across human populations. The early trend of investigating a pre-determined set of genes for differential epigenetic regulation is paving way for more unbiased screening. This review summarizes our current understanding of the epigenetic events that have been tied to the racial differences in cancer incidence and mortality. A better understanding of the epigenetics of racial diversity holds promise for the design and execution of novel strategies targeting the human epigenome for reducing the disparity gaps.
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Integrative modelling of tumour DNA methylation quantifies the contribution of metabolism. Nat Commun 2016; 7:13666. [PMID: 27966532 PMCID: PMC5171841 DOI: 10.1038/ncomms13666] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 10/24/2016] [Indexed: 12/29/2022] Open
Abstract
Altered DNA methylation is common in cancer and often considered an early event in tumorigenesis. However, the sources of heterogeneity of DNA methylation among tumours remain poorly defined. Here we capitalize on the availability of multi-platform data on thousands of human tumours to build integrative models of DNA methylation. We quantify the contribution of clinical and molecular factors in explaining intertumoral variability in DNA methylation. We show that the levels of a set of metabolic genes involved in the methionine cycle is predictive of several features of DNA methylation in tumours, including the methylation of cancer genes. Finally, we demonstrate that patients whose DNA methylation can be predicted from the methionine cycle exhibited improved survival over cases where this regulation is disrupted. This study represents a comprehensive analysis of the determinants of methylation and demonstrates the surprisingly large interaction between metabolism and DNA methylation variation. Together, our results quantify links between tumour metabolism and epigenetics and outline clinical implications.
Altered DNA methylation is a feature of cancer and between-patient variability is prevalent. Here, the authors integrate data on thousands of human tumours, and find that expression levels of methionine metabolism genes are predictive of methylation features, and that the breakdown of this relationship is a negative prognostic marker.
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Sharma V, Kumar L, Mohanty SK, Maikhuri JP, Rajender S, Gupta G. Sensitization of androgen refractory prostate cancer cells to anti-androgens through re-expression of epigenetically repressed androgen receptor - Synergistic action of quercetin and curcumin. Mol Cell Endocrinol 2016; 431:12-23. [PMID: 27132804 DOI: 10.1016/j.mce.2016.04.024] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 04/02/2016] [Accepted: 04/27/2016] [Indexed: 01/06/2023]
Abstract
Epigenetic repression of Androgen Receptor (AR) gene by hypermethylation of its promoter causes resistance in prostate cancer (CaP) to androgen deprivation therapy with anti-androgens. Some dietary phytocompounds like quercetin (Q) and curcumin (C) with reported DNMT-inhibitory activity were tested for their ability to re-express the AR in AR-negative CaP cell lines PC3 and DU145. Combined treatment with Q+C was much more effective than either Q or C in inhibiting DNMT, causing global hypomethylation, restoring AR mRNA and protein levels and causing apoptosis via mitochondrial depolarization of PC3 and DU145. The functional AR protein expressed in Q+C treated cells sensitized them to dihydrotestosterone (DHT)-induced proliferation, bicalutamide-induced apoptosis, bound to androgen response element to increase luciferase activity in gene reporter assay and was susceptible to downregulation by AR siRNA. Bisulfite sequencing revealed high methylation of AR promoter CpG sites in AR-negative DU145 and PC3 cell lines that was significantly demethylated by Q+C treatment, which restored AR expression. Notable synergistic effects of Q+C combination in re-sensitizing androgen refractory CaP cells to AR-mediated apoptosis, their known safety in clinical use, and epidemiological evidences relating their dietary consumption with lower cancer incidences indicate their potential for use in chemoprevention of androgen resistance in prostate cancer.
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Affiliation(s)
- Vikas Sharma
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Lokesh Kumar
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Sujit K Mohanty
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Jagdamba P Maikhuri
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Singh Rajender
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Gopal Gupta
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, India.
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Sharma V, Verma V, Lal N, Yadav SK, Sarkar S, Mandalapu D, Porwal K, Rawat T, Maikhuri JP, Rajender S, Sharma VL, Gupta G. Disulfiram and its novel derivative sensitize prostate cancer cells to the growth regulatory mechanisms of the cell by re-expressing the epigenetically repressed tumor suppressor-estrogen receptor β. Mol Carcinog 2015; 55:1843-1857. [PMID: 26599461 DOI: 10.1002/mc.22433] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 10/20/2015] [Accepted: 11/03/2015] [Indexed: 11/09/2022]
Abstract
Estrogen Receptor-β (ER-β), a tumor-suppressor in prostate cancer, is epigenetically repressed by hypermethylation of its promoter. DNA-methyltransferases (DNMTs), which catalyze the transfer of methyl-groups to CpG islands of gene promoters, are overactive in cancers and can be inhibited by DNMT-inhibitors to re-express the tumor suppressors. The FDA-approved nucleoside DNMT-inhibitors like 5-Azacytidine and 5-Aza-deoxycytidine carry notable concerns due to their off-target toxicity, therefore non-nucleoside DNMT inhibitors are desirable for prolonged epigenetic therapy. Disulfiram (DSF), an antabuse drug, inhibits DNMT and prevents proliferation of cells in prostate and other cancers, plausibly through the re-expression of tumor suppressors like ER-β. To increase the DNMT-inhibitory activity of DSF, its chemical scaffold was optimized and compound-339 was discovered as a doubly potent DSF-derivative with similar off-target toxicity. It potently and selectively inhibited cell proliferation of prostate cancer (PC3/DU145) cells in comparison to normal (non-cancer) cells by promoting cell-cycle arrest and apoptosis, accompanied with inhibition of total DNMT activity, and re-expression of ER-β (mRNA/protein). Bisulfite-sequencing of ER-β promoter revealed that compound-339 demethylated CpG sites more efficaciously than DSF, restoring near-normal methylation status of ER-β promoter. Compound-339 docked on to the MTase domain of DNMT1 with half the energy of DSF. In xenograft mice-model, the tumor volume regressed by 24% and 50% after treatment with DSF and compound-339, respectively, with increase in ER-β expression. Apparently both compounds inhibit prostate cancer cell proliferation by re-expressing the epigenetically repressed tumor-suppressor ER-β through inhibition of DNMT activity. Compound-339 presents a new lead for further study as an anti-prostate cancer agent. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Vikas Sharma
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, India
| | - Vikas Verma
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, India
| | - Nand Lal
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow, India
| | - Santosh K Yadav
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, India
| | - Saumya Sarkar
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, India
| | - Dhanaraju Mandalapu
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow, India
| | - Konica Porwal
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, India
| | - Tara Rawat
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow, India
| | - J P Maikhuri
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, India
| | - Singh Rajender
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, India
| | - V L Sharma
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow, India
| | - Gopal Gupta
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, India.
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Prostate Cancer Stem-like Cells Contribute to the Development of Castration-Resistant Prostate Cancer. Cancers (Basel) 2015; 7:2290-308. [PMID: 26593949 PMCID: PMC4695890 DOI: 10.3390/cancers7040890] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 10/30/2015] [Accepted: 11/04/2015] [Indexed: 12/16/2022] Open
Abstract
Androgen deprivation therapy (ADT) has been the standard care for patients with advanced prostate cancer (PC) since the 1940s. Although ADT shows clear benefits for many patients, castration-resistant prostate cancer (CRPC) inevitably occurs. In fact, with the two recent FDA-approved second-generation anti-androgens abiraterone and enzalutamide, resistance develops rapidly in patients with CRPC, despite their initial effectiveness. The lack of effective therapeutic solutions towards CRPC largely reflects our limited understanding of the underlying mechanisms responsible for CRPC development. While persistent androgen receptor (AR) signaling under castration levels of serum testosterone (<50 ng/mL) contributes to resistance to ADT, it is also clear that CRPC evolves via complex mechanisms. Nevertheless, the physiological impact of individual mechanisms and whether these mechanisms function in a cohesive manner in promoting CRPC are elusive. In spite of these uncertainties, emerging evidence supports a critical role of prostate cancer stem-like cells (PCSLCs) in stimulating CRPC evolution and resistance to abiraterone and enzalutamide. In this review, we will discuss the recent evidence supporting the involvement of PCSLC in CRPC acquisition as well as the pathways and factors contributing to PCSLC expansion in response to ADT.
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Angulo JC, Andrés G, Ashour N, Sánchez-Chapado M, López JI, Ropero S. Development of Castration Resistant Prostate Cancer can be Predicted by a DNA Hypermethylation Profile. J Urol 2015; 195:619-26. [PMID: 26551297 DOI: 10.1016/j.juro.2015.10.172] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2015] [Indexed: 10/22/2022]
Abstract
PURPOSE Detection of DNA hypermethylation has emerged as a novel molecular biomarker for prostate cancer diagnosis and evaluation of prognosis. We sought to define whether a hypermethylation profile of patients with prostate cancer on androgen deprivation would predict castrate resistant prostate cancer. MATERIALS AND METHODS Genome-wide methylation analysis was performed using a methylation cancer panel in 10 normal prostates and 45 tumor samples from patients placed on androgen deprivation who were followed until castrate resistant disease developed. Castrate resistant disease was defined according to EAU (European Association of Urology) guideline criteria. Two pathologists reviewed the Gleason score, Ki-67 index and neuroendocrine differentiation. Hierarchical clustering analysis was performed and relationships with outcome were investigated by Cox regression and log rank analysis. RESULTS We found 61 genes that were significantly hypermethylated in greater than 20% of tumors analyzed. Three clusters of patients were characterized by a DNA methylation profile, including 1 at risk for earlier castrate resistant disease (log rank p = 0.019) and specific mortality (log rank p = 0.002). Hypermethylation of ETV1 (HR 3.75) and ZNF215 (HR 2.89) predicted disease progression despite androgen deprivation. Hypermethylation of IRAK3 (HR 13.72), ZNF215 (HR 4.81) and SEPT9 (HR 7.64) were independent markers of prognosis. Prostate specific antigen greater than 25 ng/ml, Gleason pattern 5, Ki-67 index greater than 12% and metastasis at diagnosis also predicted a negative response to androgen deprivation. Study limitations included the retrospective design and limited number of cases. CONCLUSIONS Epigenetic silencing of the mentioned genes could be novel molecular markers for the prognosis of advanced prostate cancer. It might predict castrate resistance during hormone deprivation and, thus, disease specific mortality. Gene hypermethylation is associated with disease progression in patients who receive hormone therapy. It could serve as a marker of the treatment response.
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Affiliation(s)
- Javier C Angulo
- Servicio de Urología, Hospital Universitario de Getafe, Departamento Clínico, Facultad de Ciencias Biomédicas, Universidad Europea de Madrid, Laureate Universities, Getafe, Spain.
| | - Guillermo Andrés
- Servicio de Urología, Hospital Universitario de Getafe, Departamento Clínico, Facultad de Ciencias Biomédicas, Universidad Europea de Madrid, Laureate Universities, Getafe, Spain
| | - Nadia Ashour
- Departamento de Biología de Sistemas, Unidad Docente de Bioquímica y Biología Molecular, Universidad de Alcalá, Alcalá de Henares, Bilbao, Spain
| | - Manuel Sánchez-Chapado
- Servicio de Urología, Hospital Universitario Príncipe de Asturias, Universidad de Alcalá, Alcalá de Henares, Bilbao, Spain
| | - Jose I López
- Servicio de Anatomía Patológica, Hospital Universitario de Cruces, Instituto BioCruces, Universidad del País Vasco, Bilbao, Spain
| | - Santiago Ropero
- Departamento de Biología de Sistemas, Unidad Docente de Bioquímica y Biología Molecular, Universidad de Alcalá, Alcalá de Henares, Bilbao, Spain
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Xia Y, Shen S, Zhang X, Deng Z, Xiang Z, Wang H, Yi L, Gao Q, Wang Y. Epigenetic pattern changes in prenatal female Sprague-Dawley rats following exposure to androgen. Reprod Fertil Dev 2015; 28:RD14292. [PMID: 25823942 DOI: 10.1071/rd14292] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 01/28/2015] [Indexed: 12/31/2022] Open
Abstract
Androgen excess is generally considered to be one of the major characteristics of polycystic ovary syndrome (PCOS). Evidence from both clinical research and animal studies has revealed that this syndrome may have fetal origins, with epigenetics being proposed as the underlying mechanism. Our PCOS rat model induced by prenatal administration of 3mg testosterone from Embryonic Day (E) 16 to E19 showed polycystic ovaries, irregular oestrous cycles and endocrine disorders in adulthood. The methylation status of 16, 8 and 4 cytosine-phosphate-guanine (CpG) sites in the promoter regions of the androgen receptor (Ar), cytochrome P450 family 11, subfamily A, polypeptide 1 (Cyp11a1) and cytochrome P450, family 17, subfamily A, polypeptide 1 (Cyp17a1) genes, respectively, were measured by pyrosequencing. We identified three hypomethylated sites (CpG +58, +65 and +150) in Ar and one hypomethylated site (CpG +1016) in Cyp11a1 in peripheral blood cells of prenatally androgenised (PNA) rats. In ovarian tissue, five CpG sites of Ar (CpG +87, +91, +93, +98, +150) and one single CpG site in Cyp11a1 (CpG +953) were significantly hypomethylated in PNA rats, but the modified methylation of these two genes may not be sufficient to significantly alter levels of gene expression. Furthermore, tissue-specific methylation analysis revealed that both Ar and Cyp11a1 exhibited significant hypomethylation in testis in contrast with ovary and blood. PNA may lead to methylation pattern changes and the development of PCOS, but further studies are required to reveal causal relationships.
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Kosaka T, Miyajima A, Oya M. Is DHT Production by 5α-Reductase Friend or Foe in Prostate Cancer? Front Oncol 2014; 4:247. [PMID: 25279351 PMCID: PMC4165281 DOI: 10.3389/fonc.2014.00247] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 08/29/2014] [Indexed: 01/01/2023] Open
Abstract
The first advance in the history of studies on prostate cancer (PCa) and androgens was the development of treatment with castration and administration of estrogen by Charles B. Huggins, who won the Nobel Prize in Physiology and Medicine. Since then, and for 70 years, androgen deprivation therapy has been the standard therapy for advanced PCa and the center of studies on PCa. However, recent advances have shed light on the relationship between androgens and the development or the progression of PCa. The use of 5AR inhibitors to prevent progression of PCa continues to be widely discussed. Discussion has been fueled by the findings of two large randomized, placebo-controlled trials: the Prostate Cancer Prevention Trial with finasteride and the Reduction by Dutasteride of Prostate Cancer Events trial. Does the development of PCa or progression to castration-resistant PCa depend on dihydrotestosterone (DHT)? Here, we summarize and discuss recent topics of local androgen production of DHT in PCa.
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Affiliation(s)
- Takeo Kosaka
- Department of Urology, Keio University School of Medicine, Tokyo, Japan
| | - Akira Miyajima
- Department of Urology, Keio University School of Medicine, Tokyo, Japan
| | - Mototsugu Oya
- Department of Urology, Keio University School of Medicine, Tokyo, Japan
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Graça I, Sousa EJ, Costa-Pinheiro P, Vieira FQ, Torres-Ferreira J, Martins MG, Henrique R, Jerónimo C. Anti-neoplastic properties of hydralazine in prostate cancer. Oncotarget 2014; 5:5950-64. [PMID: 24797896 PMCID: PMC4171604 DOI: 10.18632/oncotarget.1909] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 04/16/2014] [Indexed: 12/12/2022] Open
Abstract
Prostate cancer (PCa) is a major cause of cancer-related morbidity and mortality worldwide. Although early disease is often efficiently managed therapeutically, available options for advanced disease are mostly ineffective. Aberrant DNA methylation associated with gene-silencing of cancer-related genes is a common feature of PCa. Therefore, DNA methylation inhibitors might constitute an attractive alternative therapy. Herein, we evaluated the anti-cancer properties of hydralazine, a non-nucleoside DNA methyltransferases (DNMT) inhibitor, in PCa cell lines. In vitro assays showed that hydralazine exposure led to a significant dose and time dependent growth inhibition, increased apoptotic rate and decreased invasiveness. Furthermore, it also induced cell cycle arrest and DNA damage. These phenotypic effects were particularly prominent in DU145 cells. Following hydralazine exposure, decreased levels of DNMT1, DNMT3a and DNMT3b mRNA and DNMT1 protein were depicted. Moreover, a significant decrease in GSTP1, BCL2 and CCND2 promoter methylation levels, with concomitant transcript re-expression, was also observed. Interestingly, hydralazine restored androgen receptor expression, with upregulation of its target p21 in DU145 cell line. Protein array analysis suggested that blockage of EGF receptor signaling pathway is likely to be the main mechanism of hydralazine action in DU145 cells. Our data demonstrate that hydralazine attenuated the malignant phenotype of PCa cells, and might constitute a useful therapeutic tool.
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Affiliation(s)
- Inês Graça
- Cancer Biology & Epigenetics Group, Research Center of the Portuguese Oncology Institute-Porto
- Departments of School of Allied Health Sciences ESTSP, Polytechnic of Porto
| | - Elsa J Sousa
- Cancer Biology & Epigenetics Group, Research Center of the Portuguese Oncology Institute-Porto
| | - Pedro Costa-Pinheiro
- Cancer Biology & Epigenetics Group, Research Center of the Portuguese Oncology Institute-Porto
| | - Filipa Q Vieira
- Cancer Biology & Epigenetics Group, Research Center of the Portuguese Oncology Institute-Porto
- Departments of School of Allied Health Sciences ESTSP, Polytechnic of Porto
| | - Jorge Torres-Ferreira
- Cancer Biology & Epigenetics Group, Research Center of the Portuguese Oncology Institute-Porto
- Department of Pathology, Portuguese Oncology Institute-Porto
| | - Maria Gabriela Martins
- Department of Hematology - Laboratory of Flow Cytometry, Portuguese Oncology Institute-Porto
| | - Rui Henrique
- Cancer Biology & Epigenetics Group, Research Center of the Portuguese Oncology Institute-Porto
- Department of Pathology, Portuguese Oncology Institute-Porto
- Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar, University of Porto
| | - Carmen Jerónimo
- Cancer Biology & Epigenetics Group, Research Center of the Portuguese Oncology Institute-Porto
- Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar, University of Porto
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Rodríguez-Rodero S, Delgado-Álvarez E, Fernández AF, Fernández-Morera JL, Menéndez-Torre E, Fraga MF. Epigenetic alterations in endocrine-related cancer. Endocr Relat Cancer 2014; 21:R319-30. [PMID: 24898948 DOI: 10.1530/erc-13-0070] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Aberrant epigenetics is a hallmark of cancer, and endocrine-related tumors are no exception. Recent research has been identifying an ever-growing number of epigenetic alterations in both genomic DNA methylation and histone post-translational modification in tumors of the endocrine system. Novel microarray and ultra-deep sequencing technologies have allowed the identification of genome-wide epigenetic patterns in some tumor types such as adrenocortical, parathyroid, and breast carcinomas. However, in other cancer types, such as the multiple endocrine neoplasia syndromes and thyroid cancer, tumor information is limited to candidate genes alone. Future research should fill this gap and deepen our understanding of the functional role of these alterations in cancer, as well as defining their possible clinical uses.
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Affiliation(s)
- Sandra Rodríguez-Rodero
- Endocrinology and Nutrition ServiceHospital Universitario Central de Asturias, Av. Julian Clavería s/n, 33006 Oviedo, SpainCancer Epigenetics LaboratoryInstituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006 Oviedo, SpainDepartment of Immunology and OncologyNational Center for Biotechnology, CNB-CSIC, Cantoblanco, Madrid E-28049, SpainEndocrinology and Nutrition ServiceHospital Universitario Central de Asturias, Av. Julian Clavería s/n, 33006 Oviedo, SpainCancer Epigenetics LaboratoryInstituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006 Oviedo, SpainDepartment of Immunology and OncologyNational Center for Biotechnology, CNB-CSIC, Cantoblanco, Madrid E-28049, Spain
| | - Elías Delgado-Álvarez
- Endocrinology and Nutrition ServiceHospital Universitario Central de Asturias, Av. Julian Clavería s/n, 33006 Oviedo, SpainCancer Epigenetics LaboratoryInstituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006 Oviedo, SpainDepartment of Immunology and OncologyNational Center for Biotechnology, CNB-CSIC, Cantoblanco, Madrid E-28049, Spain
| | - Agustín F Fernández
- Endocrinology and Nutrition ServiceHospital Universitario Central de Asturias, Av. Julian Clavería s/n, 33006 Oviedo, SpainCancer Epigenetics LaboratoryInstituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006 Oviedo, SpainDepartment of Immunology and OncologyNational Center for Biotechnology, CNB-CSIC, Cantoblanco, Madrid E-28049, Spain
| | - Juan L Fernández-Morera
- Endocrinology and Nutrition ServiceHospital Universitario Central de Asturias, Av. Julian Clavería s/n, 33006 Oviedo, SpainCancer Epigenetics LaboratoryInstituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006 Oviedo, SpainDepartment of Immunology and OncologyNational Center for Biotechnology, CNB-CSIC, Cantoblanco, Madrid E-28049, Spain
| | - Edelmiro Menéndez-Torre
- Endocrinology and Nutrition ServiceHospital Universitario Central de Asturias, Av. Julian Clavería s/n, 33006 Oviedo, SpainCancer Epigenetics LaboratoryInstituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006 Oviedo, SpainDepartment of Immunology and OncologyNational Center for Biotechnology, CNB-CSIC, Cantoblanco, Madrid E-28049, Spain
| | - Mario F Fraga
- Endocrinology and Nutrition ServiceHospital Universitario Central de Asturias, Av. Julian Clavería s/n, 33006 Oviedo, SpainCancer Epigenetics LaboratoryInstituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006 Oviedo, SpainDepartment of Immunology and OncologyNational Center for Biotechnology, CNB-CSIC, Cantoblanco, Madrid E-28049, SpainEndocrinology and Nutrition ServiceHospital Universitario Central de Asturias, Av. Julian Clavería s/n, 33006 Oviedo, SpainCancer Epigenetics LaboratoryInstituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006 Oviedo, SpainDepartment of Immunology and OncologyNational Center for Biotechnology, CNB-CSIC, Cantoblanco, Madrid E-28049, Spain
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Kosoff D, Krueger T, Lang JM. Targeting epigenetic mechanisms for clinical translation: enhancing the efficacy of tumor immunotherapies. Immunotherapy 2014; 5:1243-54. [PMID: 24188678 DOI: 10.2217/imt.13.116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The ability to evade host immune surveillance is critical for the survival of tumor cells and is correlated with poor clinical outcomes. Many tumor types have been found to downregulate expression of genes involved in antigen production, processing and presentation to evade immune detection. Recent findings suggest that the mechanisms underlying these immune evasion phenomena extend beyond alterations in DNA sequence to include epigenetic modifications of DNA and associated proteins, including hypermethylation of DNA and altered histone acetylation patterns. This review will summarize alterations in antigen presentation machinery identified in malignant cells, epigenetic mechanisms that can be employed in the downregulation of genes relevant for antigen presentation and translational strategies to target these processes to enhance the efficacy of antitumor immunotherapies.
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Affiliation(s)
- David Kosoff
- Department of Medicine, University of Wisconsin, Madison, WI, USA
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Wang X, Gao H, Ren L, Gu J, Zhang Y, Zhang Y. Demethylation of the miR-146a promoter by 5-Aza-2'-deoxycytidine correlates with delayed progression of castration-resistant prostate cancer. BMC Cancer 2014; 14:308. [PMID: 24885368 PMCID: PMC4024097 DOI: 10.1186/1471-2407-14-308] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 04/07/2014] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Androgen deprivation therapy is the primary strategy for the treatment of advanced prostate cancer; however, after an initial regression, most patients will inevitably develop a fatal androgen-independent tumor. Therefore, understanding the mechanisms of the transition to androgen independence prostate cancer is critical to identify new ways to treat older patients who are ineligible for conventional chemotherapy. METHODS The effects of 5-Aza-2'-deoxycytidine (5-Aza-CdR) on the viability and the apoptosis of the androgen-dependent (LNCaP) and androgen-independent (PC3) cell lines were examined by MTS assay and western blot analysis for the activation of caspase-3. The subcutaneous LNCaP xenografts were established in a nude mice model. MiR-146a and DNMTs expressions were analyzed by qRT-PCR and DNA methylation rates of LINE-1 were measured by COBRA-IRS to determine the global DNA methylation levels. The methylation levels of miR-146a promoter region in the different groups were quantified by the bisulfite sequencing PCR (BSP) assay. RESULTS We validated that 5-Aza-CdR induced cell death and increased miR-146a expression in both LNCaP and PC3 cells. Notably, the expression of miR-146a in LNCaP cells was much higher than in PC3 cells. MiR-146a inhibitor was shown to suppress apoptosis in 5-Aza-CdR-treated cells. In a castrate mouse LNCaP xenograft model, 5-Aza-CdR significantly suppressed the tumors growth and also inhibited prostate cancer progression. Meanwhile, miR-146a expression was significantly enhanced in the tumor xenografts of 5-Aza-CdR-treated mice and the androgen-dependent but not the androgen-independent stage of castrated mice. In particular, the expression of miR-146a was significantly augmented in both stages of the combined treatment (castration and 5-Aza-CdR). Additionally, the methylation percentage of the two CpG sites (-444 bp and -433 bp), which were around the NF-κB binding site at miR-146a promoter, showed the lowest methylation levels among all CpG sites in the combined treatment tumors of both stages. CONCLUSION Up-regulating miR-146a expression via the hypomethylation of the miR-146a promoter by 5-Aza-CdR was correlated with delayed progression of castration-resistant prostate cancers. Moreover, site-specific DNA methylation may play an important role in miR-146a expression in androgen-dependent prostate cancer progression to androgen-independent prostate cancer and therefore provides a potentially useful biomarker for assessing drug efficacy in prostate cancer.
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Affiliation(s)
- Xiaolu Wang
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215 Hepingxi Road, Shijiazhuang 050000, China
| | - Haitao Gao
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215 Hepingxi Road, Shijiazhuang 050000, China
| | - Lixin Ren
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215 Hepingxi Road, Shijiazhuang 050000, China
| | - Junfei Gu
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215 Hepingxi Road, Shijiazhuang 050000, China
| | - Yanping Zhang
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215 Hepingxi Road, Shijiazhuang 050000, China
| | - Yong Zhang
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215 Hepingxi Road, Shijiazhuang 050000, China
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Wang L, Li Y, Yang X, Yuan H, Li X, Qi M, Chang YWY, Wang C, Fu W, Yang M, Zhang J, Han B. ERG-SOX4 interaction promotes epithelial-mesenchymal transition in prostate cancer cells. Prostate 2014; 74:647-58. [PMID: 24435928 DOI: 10.1002/pros.22783] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Accepted: 12/31/2013] [Indexed: 12/27/2022]
Abstract
BACKGROUND Approximately 50% of prostate cancer (PCa) patients in Western countries harbor ERG rearrangement with concurrent ERG overexpression. Overexpression of SOX4 has been shown to play important roles in multiple cancers including PCa. However, the link between these two critical genetic aberrations was unclear. METHODS Fluorescence in situ hybridization and immunohistochemistry were utilized to detect ERG rearrangement and SOX4 expression. Cellular function was evaluated by transwell, wound healing assays, and cell adhesion assay, respectively. Interaction between ERG and SOX4 was arrayed by co-immunoprecipitation, Real-time PCR, Western blot, and siRNA. Direct binding of ERG to the promoter of SOX4, as well as epigenetic modifications of their promoters after TGF-β1 treatment was monitored by chromatin immunoprecipitation. RESULTS ERG regulated SOX4 expression via binding to its promoter. Silencing both of them showed duplicate effects on restoring the epithelial characteristics, increasing cellular adhesion and decreasing capacity of cellular migration and invasion. ERG and SOX4 have cooperative roles in TGF-β1-induced epithelial to mesenchymal transition (EMT) process. In addition, TGF-β1 stimulation increased levels of chromatin marks associated with active genes (H3K4me3, H416ac), and decreased levels of repressive marks (H3K27me3) at their promoters. 5-aza and TSA treatment changed expressions of ERG and SOX4. Clinically, overexpression of SOX4 is associated with ERG rearrangement status in PCa and ERG+/SOX4+ defined a subset of PCa patients with poor prognosis. CONCLUSION Our findings define a key role for ERG/SOX4 in the development of a subset of PCa and highlight the clinical importance of identifying molecularly defined tumor subgroups.
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Affiliation(s)
- Lin Wang
- Department of Pathology, Shandong University Medical School, Jinan, China; Research Center for Medicinal Biotechnology, Shandong Academy of Medicinal Sciences, Jinan, China
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Valdez CD, Kunju L, Daignault S, Wojno KJ, Day ML. The E2F1/DNMT1 axis is associated with the development of AR negative castration resistant prostate cancer. Prostate 2013; 73:1776-85. [PMID: 24038143 DOI: 10.1002/pros.22715] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 07/06/2013] [Indexed: 11/09/2022]
Abstract
BACKGROUND Research on castration resistant prostate cancer (CRPC) has focused primarily on functional alterations of the androgen receptor (AR). However, little is known about the loss of AR gene expression itself and the possible contribution of AR negative cells to CRPC. METHODS Human and murine prostate cancer tissue microarrays (TMAs) were evaluated with antibodies specific for E2F1, DNA methyltransferase 1 or AR. The human prostate cancer TMA consisted of clinical samples ranging from normal tissue to samples of metastatic disease. The murine TMA was comprised of benign, localized or metastatic prostate cancer acquired from TRAMP mice treated with castration and/or 5'-Aza-2'-deoxycytidine (5Aza). RESULTS Immunohistochemical analysis revealed increased nuclear DNMT1 staining in localized PCa (P < 0.0001) and metastatic PCa (P < 0.0001) compared to normal tissue. Examination of specific diagnoses revealed that Gleason seven tumors exhibited greater nuclear DNMT1 staining than Gleason six tumors (P < 0.05) and that metastatic tissue exhibited greater levels of nuclear DNMT1 than Gleason seven tumors (P < 0.01). Evaluation of the murine tissue cores revealed that 8.2% and 8.1% of benign tissue cores stained positive for E2F1 and DNMT1 respectively, while 97.0% were AR positive. Conversely, 81% and 100% of tumors were positive for E2F1 and DNMT1 respectively. This was in stark contrast to only 18% of tumors positive for AR. Treatment of mice with 5Aza reduced DNMT1 staining by 30%, while AR increased by 27%. CONCLUSIONS These findings demonstrate that the E2F1/DNMT1 inhibitory axis of AR transcription is activated during the emergence of CRPC.
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Affiliation(s)
- Conrad David Valdez
- Department of Urology, University of Michigan, Ann Arbor, Michigan; Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, Michigan
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Androgen signaling disruption during fetal and postnatal development affects androgen receptor and connexin 43 expression and distribution in adult boar prostate. BIOMED RESEARCH INTERNATIONAL 2013; 2013:407678. [PMID: 24151599 PMCID: PMC3789303 DOI: 10.1155/2013/407678] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 07/29/2013] [Accepted: 08/07/2013] [Indexed: 12/05/2022]
Abstract
To date, limited knowledge exists regarding the role of the androgen signaling during specific periods of development in the regulation of androgen receptor (AR) and connexin 43 (Cx43) in adult prostate. Therefore, in this study we examined mRNA and protein expression, and tissue distribution of AR and Cx43 in adult boar prostates following fetal (GD20), neonatal (PD2), and prepubertal (PD90) exposure to an antiandrogen flutamide (50 mg/kg bw). In GD20 and PD2 males we found the reduction of the luminal compartment, inflammatory changes, decreased AR and increased Cx43 expression, and altered localization of both proteins. Moreover, enhanced apoptosis and reduced proliferation were detected in the prostates of these animals. In PD90 males the alterations were less evident, except that Cx43 expression was markedly upregulated. The results presented herein indicate that in boar androgen action during early fetal and neonatal periods plays a key role in the maintenance of normal phenotype and functions of prostatic cells at adulthood. Furthermore, we demonstrated that modulation of Cx43 expression in the prostate could serve as a sensitive marker of hormonal disruption during different developmental stages.
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Fialova B, Smesny Trtkova K, Paskova L, Langova K, Kolar Z. Effect of histone deacetylase and DNA methyltransferase inhibitors on the expression of the androgen receptor gene in androgen-independent prostate cancer cell lines. Oncol Rep 2013; 29:2039-45. [PMID: 23503510 DOI: 10.3892/or.2013.2344] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Accepted: 01/22/2013] [Indexed: 11/06/2022] Open
Abstract
Androgen receptor (AR) expression in prostate cancer (CaP) cells varies due to the multiple changes including epigenetic modifications such as DNA methylation and histone deacetylation. DNA methyltransferase and histone deacetylase inhibitors are promising for the treatment of CaP. The aim of our study was to analyze the 5-aza-2'-deoxycytidine (Aza‑dC) and sodium butyrate (NaB) effects on CaP cells with modified AR gene expression. The androgen-independent human prostate cancer cell lines PC3 (lacking a functional AR) and DU145 (strongly limited expression due to methylations in the AR gene) were used. PCR of bisulfite-modified DNA and RT-PCR with bisulfite-sequencing were used for AR gene analysis of DU145 and PC3 cells following their treatment with Aza-dC and/or NaB. Re-acetylated histones around the AR gene were detected by conventional PCR of immunoprecipitated DNA obtained from treated cells. In both cell lines without the AR expression, the combined treatment was followed with significant decrease of cell viability. The co-treatment of DU145 cells caused site-specific demethylation in the AR promoter region followed by gene re-expression and increased acetylation in histones H3 and H4. The co-treatment with Aza-dC and NaB was the most effective in demethylation and re-expression of the AR gene. In the AR gene promoter, the location and density of deme-thylated CpGs indicated the existence of distinct promoter hot spot that could be a target of AR gene inactivation therapy of CaP patients during androgen deprivation.
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Affiliation(s)
- Barbora Fialova
- Laboratory of Molecular Pathology, Department of Clinical and Molecular Pathology, Faculty of Medicine and Dentistry, Palacky University Olomouc, 775 15 Olomouc, Czech Republic.
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Yang Z, Yang Z. Prediction of heterogeneous differential genes by detecting outliers to a Gaussian tight cluster. BMC Bioinformatics 2013; 14:81. [PMID: 23497043 PMCID: PMC3699364 DOI: 10.1186/1471-2105-14-81] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Accepted: 02/14/2013] [Indexed: 11/12/2022] Open
Abstract
Background Heterogeneously and differentially expressed genes (hDEG) are a common phenomenon due to bio-logical diversity. A hDEG is often observed in gene expression experiments (with two experimental conditions) where it is highly expressed in a few experimental samples, or in drug trial experiments for cancer studies with drug resistance heterogeneity among the disease group. These highly expressed samples are called outliers. Accurate detection of outliers among hDEGs is then desirable for dis- ease diagnosis and effective drug design. The standard approach for detecting hDEGs is to choose the appropriate subset of outliers to represent the experimental group. However, existing methods typically overlook hDEGs with very few outliers. Results We present in this paper a simple algorithm for detecting hDEGs by sequentially testing for potential outliers with respect to a tight cluster of non- outliers, among an ordered subset of the experimental samples. This avoids making any restrictive assumptions about how the outliers are distributed. We use simulated and real data to illustrate that the proposed algorithm achieves a good separation between the tight cluster of low expressions and the outliers for hDEGs. Conclusions The proposed algorithm assesses each potential outlier in relation to the cluster of potential outliers without making explicit assumptions about the outlier distribution. Simulated examples and and breast cancer data sets are used to illustrate the suitability of the proposed algorithm for identifying hDEGs with small numbers of outliers.
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Affiliation(s)
- Zihua Yang
- Wolfson Institute for Preventive Medicine, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK.
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O'Rourke CJ, Knabben V, Bolton E, Moran D, Lynch T, Hollywood D, Perry AS. Manipulating the epigenome for the treatment of urological malignancies. Pharmacol Ther 2013; 138:185-96. [PMID: 23353098 DOI: 10.1016/j.pharmthera.2013.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 01/10/2013] [Indexed: 12/26/2022]
Abstract
Urological malignancies (cancers of the prostate, bladder, kidney and testes) account for 15% of all human cancers and more than 500,000 deaths worldwide each year. This group of malignancies is spread across multiple generations, affecting the young (testicular) through middle and old-age (kidney, prostate and bladder). Like most human cancers, urological cancers are characterized by widespread epigenetic insult, causing changes in DNA hypermethylation and histone modifications leading to silencing of tumor suppressor genes and genomic instability. The inherent stability yet dynamic plasticity of the epigenome lends itself well to therapeutic manipulation. Epigenetic changes are amongst the earliest lesions to occur during carcinogenesis and are essentially reversible (unlike mutations). For this reason, much attention has been placed over the past two decades on deriving pharmacological compounds that can specifically target and reverse such epi-mutations, either halting cancer on its developmental trajectory or reverting fully formed cancers to a more clinically manageable state. This review discusses DNA methyltransferase and histone deacetylase inhibitors that have been extensively studied in preclinical models and clinical trials for advanced and metastatic urological cancers.
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Affiliation(s)
- Colm J O'Rourke
- Prostate Molecular Oncology, Institute of Molecular Medicine, Trinity College, Dublin, Ireland
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Tsao CK, Galsky MD, Small AC, Yee T, Oh WK. Targeting the androgen receptor signalling axis in castration-resistant prostate cancer (CRPC). BJU Int 2012; 110:1580-8. [DOI: 10.1111/j.1464-410x.2012.11445.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Majumdar S, Buckles E, Estrada J, Koochekpour S. Aberrant DNA methylation and prostate cancer. Curr Genomics 2012; 12:486-505. [PMID: 22547956 PMCID: PMC3219844 DOI: 10.2174/138920211797904061] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2011] [Revised: 08/15/2011] [Accepted: 09/05/2011] [Indexed: 12/28/2022] Open
Abstract
Prostate cancer (PCa) is the most prevalent cancer, a significant contributor to morbidity and a leading cause of cancer-related death in men in Western industrialized countries. In contrast to genetic changes that vary among individual cases, somatic epigenetic alterations are early and highly consistent events. Epigenetics encompasses several different phenomena, such as DNA methylation, histone modifications, RNA interference, and genomic imprinting. Epigenetic processes regulate gene expression and can change malignancy-associated phenotypes such as growth, migration, invasion, or angiogenesis. Methylations of certain genes are associated with PCa progression. Compared to normal prostate tissues, several hypermethylated genes have also been identified in benign prostate hyperplasia, which suggests a role for aberrant methylation in this growth dysfunction. Global and gene-specific DNA methylation could be affected by environmental and dietary factors. Among other epigenetic changes, aberrant DNA methylation might have a great potential as diagnostic or prognostic marker for PCa and could be tested in tumor tissues and various body fluids (e.g., serum, urine). The DNA methylation markers are simple in nature, have high sensitivity, and could be detected either quantitatively or qualitatively. Availability of genome-wide screening methodologies also allows the identification of epigenetic signatures in high throughput population studies. Unlike irreversible genetic changes, epigenetic alterations are reversible and could be used for PCa targeted therapies.
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Affiliation(s)
- Sunipa Majumdar
- Stanley S. Scott Cancer Center, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA 70122, USA
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Yang M, Park JY. DNA methylation in promoter region as biomarkers in prostate cancer. Methods Mol Biol 2012; 863:67-109. [PMID: 22359288 DOI: 10.1007/978-1-61779-612-8_5] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The prostate gland is the most common site of cancer and the second leading cause of cancer death in American men. Recent emerging molecular biological technologies help us to know that epigenetic alterations such as DNA methylation within the regulatory (promoter) regions of genes are associated with transcriptional silencing in cancer. Promoter hypermethylation of critical pathway genes could be potential biomarkers and therapeutic targets for prostate cancer. In this chapter, we updated current information on methylated genes associated with the development and progression of prostate cancer. Over 40 genes have been investigated for methylation in promoter region in prostate cancer. These methylated genes are involved in critical pathways, such as DNA repair, metabolism, and invasion/metastasis. The role of hypermethylated genes in regulation of critical pathways in prostate cancer is discussed. These findings may provide new information of the pathogenesis, the exciting potential to be predictive and to provide personalized treatment of prostate cancer. Indeed, some epigenetic alterations in prostate tumors are being translated into clinical practice for therapeutic use.
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Affiliation(s)
- Mihi Yang
- Division of Cancer Prevention and Controls, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
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