1
|
Zhao Y, Li J, Chen J, Ye M, Jin X. Functional roles of E3 ubiquitin ligases in prostate cancer. J Mol Med (Berl) 2022; 100:1125-1144. [PMID: 35816219 DOI: 10.1007/s00109-022-02229-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 12/16/2022]
Abstract
Prostate cancer (PCa) is a malignant epithelial tumor of the prostate gland with a high male cancer incidence. Numerous studies indicate that abnormal function of ubiquitin-proteasome system (UPS) is associated with the progression and metastasis of PCa. E3 ubiquitin ligases, key components of UPS, determine the specificity of substrates, and substantial advances of E3 ubiquitin ligases have been reached recently. Herein, we introduce the structures and functions of E3 ubiquitin ligases and summarize the mechanisms of E3 ubiquitin ligases-related PCa signaling pathways. In addition, some progresses in the development of inhibitors targeting E3 ubiquitin ligases are also included.
Collapse
Affiliation(s)
- Yiting Zhao
- Department of Oncology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, 315020, China.,Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China.,Department of Chemoradiotherapy, the Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China
| | - Jinyun Li
- Department of Oncology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, 315020, China.,Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China
| | - Jun Chen
- Department of Chemoradiotherapy, the Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China
| | - Meng Ye
- Department of Oncology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, 315020, China.,Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China
| | - Xiaofeng Jin
- Department of Oncology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, 315020, China. .,Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China.
| |
Collapse
|
2
|
Jiao C, Meng T, Zhou C, Wang X, Wang P, Lu M, Tan X, Wei Q, Ge X, Jin J. TGF-β signaling regulates SPOP expression and promotes prostate cancer cell stemness. Aging (Albany NY) 2020; 12:7747-7760. [PMID: 32364525 PMCID: PMC7244043 DOI: 10.18632/aging.103085] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 02/25/2020] [Indexed: 12/20/2022]
Abstract
SPOP, a substrate binding adaptor of E3 ubiquitin ligase Cullin3, is frequently mutated in human prostate cancer (PCa). However, whether and how SPOP is regulated at transcriptional level in PCa remain unclear. Here, we report that SPOP is down-regulated in PCa stem-like cells (CSCs) and tissues. Our study reveals that SPOP expression is repressed by TGF-β / SMAD signaling axis in PCa CSCs. SPOP promoter contains SMAD-binding elements (SBEs), which can interact with SMAD3. Moreover, TGF-β signaling inhibitor SB431542 promotes the SPOP expression and abrogates PCa stemness. Clinically, SPOP expression is downregulated in PCa patients, which is significantly related to a poor prognosis and lower survival rate. Thus, our findings uncover a mechanism of how SPOP expression is mediated in PCa CSCs via TGF-β/ SMAD3 signaling.
Collapse
Affiliation(s)
- Chenchen Jiao
- Tongji University Cancer Center, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Tong Meng
- Tongji University Cancer Center, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Chenyu Zhou
- Tongji University Cancer Center, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Xinbo Wang
- Tongji University Cancer Center, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Ping Wang
- Tongji University Cancer Center, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
- School of Basic Medical Science, Ningxia Medical University, Yinchuan 75004, Ningxia, China
- Cancer and Aging Research Institute, School of Life Sciences, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Meiling Lu
- Department of Central Laboratory, School of Life Science and Technology, Shanghai Tenth People's Hospital of Tongji University, Tongji University, Shanghai 200072, China
| | - Xiao Tan
- Tongji University Cancer Center, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Qing Wei
- Department of Pathology, Shanghai Tenth People's Hospital of Tongji University, Shanghai 200072, China
| | - Xin Ge
- Department of Clinical Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai 200072, China
| | - Jiali Jin
- Tongji University Cancer Center, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
- School of Basic Medical Science, Ningxia Medical University, Yinchuan 75004, Ningxia, China
| |
Collapse
|
3
|
Nataf S, Barritault M, Pays L. A Unique TGFB1-Driven Genomic Program Links Astrocytosis, Low-Grade Inflammation and Partial Demyelination in Spinal Cord Periplaques from Progressive Multiple Sclerosis Patients. Int J Mol Sci 2017; 18:ijms18102097. [PMID: 28981455 PMCID: PMC5666779 DOI: 10.3390/ijms18102097] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 09/25/2017] [Accepted: 09/29/2017] [Indexed: 02/08/2023] Open
Abstract
We previously reported that, in multiple sclerosis (MS) patients with a progressive form of the disease, spinal cord periplaques extend distance away from plaque borders and are characterized by the co-occurrence of partial demyelination, astrocytosis and low-grade inflammation. However, transcriptomic analyses did not allow providing a comprehensive view of molecular events in astrocytes vs. oligodendrocytes. Here, we re-assessed our transcriptomic data and performed co-expression analyses to characterize astrocyte vs. oligodendrocyte molecular signatures in periplaques. We identified an astrocytosis-related co-expression module whose central hub was the astrocyte gene Cx43/GJA1 (connexin-43, also named gap junction protein α-1). Such a module comprised GFAP (glial fibrillary acidic protein) and a unique set of transcripts forming a TGFB/SMAD1/SMAD2 (transforming growth factor β/SMAD family member 1/SMAD family member 2) genomic signature. Partial demyelination was characterized by a co-expression network whose central hub was the oligodendrocyte gene NDRG1 (N-myc downstream regulated 1), a gene previously shown to be specifically silenced in the normal-appearing white matter (NAWM) of MS patients. Surprisingly, besides myelin genes, the NDRG1 co-expression module comprised a highly significant number of translation/elongation-related genes. To identify a putative cause of NDRG1 downregulation in periplaques, we then sought to identify the cytokine/chemokine genes whose mRNA levels inversely correlated with those of NDRG1. Following this approach, we found five candidate immune-related genes whose upregulation associated with NDRG1 downregulation: TGFB1(transforming growth factor β 1), PDGFC (platelet derived growth factor C), IL17D (interleukin 17D), IL33 (interleukin 33), and IL12A (interleukin 12A). From these results, we propose that, in the spinal cord periplaques of progressive MS patients, TGFB1 may limit acute inflammation but concurrently induce astrocytosis and an alteration of the translation/elongation of myelin genes in oligodendrocytes.
Collapse
Affiliation(s)
- Serge Nataf
- Univ Lyon, CarMeN laboratory, Inserm U1060, INRA U1397, Université Claude Bernard Lyon 1, INSA Lyon, Charles Merieux Medical School, F-69600 Oullins, France.
- Banque de Tissus et de Cellules des Hospices Civils de Lyon, Hôpital Edouard Herriot, Place d'Arsonval, F-69003 Lyon, France.
| | - Marc Barritault
- Univ Lyon, Department of Cancer Cell Plasticity, Cancer Research Center of Lyon, INSERMU1052, CNRS UMR5286, University Claude Bernard Lyon 1, 151 Cours Albert Thomas, 69003 Lyon, France.
- Service d'Anatomie Pathologique, Hospices Civils de Lyon, Groupement Hospitalier Est, 59 boulevard Pinel, 69677 Bron, France.
| | - Laurent Pays
- Univ Lyon, CarMeN laboratory, Inserm U1060, INRA U1397, Université Claude Bernard Lyon 1, INSA Lyon, Charles Merieux Medical School, F-69600 Oullins, France.
- Banque de Tissus et de Cellules des Hospices Civils de Lyon, Hôpital Edouard Herriot, Place d'Arsonval, F-69003 Lyon, France.
| |
Collapse
|
4
|
El-Sayed IY, Daher A, Destouches D, Firlej V, Kostallari E, Maillé P, Huet E, Haidar-Ahmad N, Jenster G, de la Taille A, Abou Merhi R, Terry S, Vacherot F. Extracellular vesicles released by mesenchymal-like prostate carcinoma cells modulate EMT state of recipient epithelial-like carcinoma cells through regulation of AR signaling. Cancer Lett 2017; 410:100-111. [PMID: 28935391 DOI: 10.1016/j.canlet.2017.09.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 09/05/2017] [Accepted: 09/11/2017] [Indexed: 01/06/2023]
Abstract
Extracellular vesicles released from cancer cells may play an important role in cancer progression by shuttling oncogenic information into recipient cells. However, our knowledge is still fragmentary and there remain numerous questions regarding the mechanisms at play and the functional consequences of these interactions. We have recently established a mesenchymal-like prostate cancer cell line (22Rv1/CR-1; Mes-PCa). In this study, we assessed the effects of the extracellular vesicles released by these cells on recipient androgen-dependent epithelial VCaP prostate cancer cells. Mes-PCa derived vesicles were found to promote mesenchymal features in the recipient epithelial-like prostate cancer cells. This transformation was accompanied by a modulation of androgen receptor signaling and activation of TGFβ signaling pathway. Moreover, recipient cells acquiring mesenchymal traits displayed enhanced migratory and invasive features as well as increased resistance to the androgen receptor antagonist, enzalutamide. Our results suggest a previously unappreciated role for Mes-PCa secreted vesicles in cancer promotion by transferring cell-mediated signals and promoting phenotypic changes in recipient prostate cancer cells.
Collapse
Affiliation(s)
- Ihsan Y El-Sayed
- INSERM U955, Equipe 7, Créteil, France; Université Paris-Est, UPEC, F-94000 Créteil, France; Anti-cancer Therapeutic Approaches Group (ATAC), PEACE Laboratory, Biology Department, Faculty of Sciences, Lebanese University, Lebanon
| | - Ahmad Daher
- Anti-cancer Therapeutic Approaches Group (ATAC), PEACE Laboratory, Biology Department, Faculty of Sciences, Lebanese University, Lebanon
| | - Damien Destouches
- Université Paris-Est, UPEC, F-94000 Créteil, France; CNRS, ERL 9215, Laboratoire de Recherche sur la Croissance Cellulaire, la Réparation et la Régénération Tissulaires (CRRET), F-94000 Créteil, France
| | - Virginie Firlej
- INSERM U955, Equipe 7, Créteil, France; Université Paris-Est, UPEC, F-94000 Créteil, France
| | - Enis Kostallari
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Pascale Maillé
- AP-HP, Hôpital H. Mondor, Département de pathologie, F-94000 Créteil, France
| | - Eric Huet
- INSERM U955, Equipe 7, Créteil, France; Université Paris-Est, UPEC, F-94000 Créteil, France
| | | | - Guido Jenster
- Erasmus Medical Centre Rotterdam, Department of Urology, 3000 CA, Rotterdam, USA
| | - Alexandre de la Taille
- INSERM U955, Equipe 7, Créteil, France; Université Paris-Est, UPEC, F-94000 Créteil, France; AP-HP, Hôpital H. Mondor, Service d'urologie, F-94000 Créteil, France
| | - Raghida Abou Merhi
- Genomic and Health/EDST-PRASE Laboratory, Faculty of Sciences, Biology Department, R. Hariri Campus, Lebanese University, Hadath, Lebanon
| | - Stéphane Terry
- INSERM UMR 1186, Integrative Tumor Immunology and Genetic Oncology, Gustave Roussy, EPHE, Fac. de médecine, Univ. Paris-Sud, University Paris-Saclay, 94805 Villejuif, France.
| | - Francis Vacherot
- INSERM U955, Equipe 7, Créteil, France; Université Paris-Est, UPEC, F-94000 Créteil, France.
| |
Collapse
|
5
|
Chen WY, Tsai YC, Yeh HL, Suau F, Jiang KC, Shao AN, Huang J, Liu YN. Loss of SPDEF and gain of TGFBI activity after androgen deprivation therapy promote EMT and bone metastasis of prostate cancer. Sci Signal 2017; 10:10/492/eaam6826. [PMID: 28811384 DOI: 10.1126/scisignal.aam6826] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Androgen deprivation therapy (ADT) targeting the androgen receptor (AR) is a standard therapeutic regimen for treating prostate cancer. However, most tumors progress to metastatic castration-resistant prostate cancer after ADT. We identified the type 1, 2, and 4 collagen-binding protein transforming growth factor-β (TGFβ)-induced protein (TGFBI) as an important factor in the epithelial-to-mesenchymal transition (EMT) and malignant progression of prostate cancer. In prostate cancer cell lines, AR signaling stimulated the activity of the transcription factor SPDEF, which repressed the expression of TGFBI ADT, AR antagonism, or overexpression of TGFBI inhibited the activity of SPDEF and enhanced the proliferation rates of prostate cancer cells. Knockdown of TGFBI suppressed migration and proliferation in cultured cells and reduced prostate tumor growth and brain and bone metastasis in xenograft models, extending the survival of tumor-bearing mice. Analysis of prostate tissue samples collected before and after ADT from the same patients showed that ADT reduced the nuclear abundance of SPDEF and increased the production of TGFBI. Our findings suggest that induction of TGFBI promotes prostate cancer growth and metastasis and can be caused by dysregulation or therapeutic inhibition of AR signaling.
Collapse
Affiliation(s)
- Wei-Yu Chen
- Department of Pathology, Wan Fang Hospital, Taipei Medical University, Taipei 11031, Taiwan.,Department of Pathology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Yuan-Chin Tsai
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Hsiu-Lien Yeh
- Institute of Information System and Applications, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Florent Suau
- Department of Microbiology, Faculty of Pharmacy, Dicle University, Diyarbakir 21280, Turkey
| | - Kuo-Ching Jiang
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Ai-Ning Shao
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Jiaoti Huang
- Department of Pathology, Duke University Medical Center, Durham, NC 27710, USA
| | - Yen-Nien Liu
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
| |
Collapse
|
6
|
Hu J, Wang G, Sun T. Dissecting the roles of the androgen receptor in prostate cancer from molecular perspectives. Tumour Biol 2017; 39:1010428317692259. [PMID: 28475016 DOI: 10.1177/1010428317692259] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Androgen receptor plays a pivotal role in prostate cancer progression, and androgen deprivation therapy to intercept androgen receptor signal pathway is an indispensable treatment for most advanced prostate cancer patients to delay cancer progression. However, the emerging of castration-resistant prostate cancer reminds us the alteration of androgen receptor, which includes androgen receptor mutation, the formation of androgen receptor variants, and androgen receptor distribution in cancer cells. In this review, we introduce the process of androgen receptor and also its variants' formation, translocation, and function alteration by protein modification or interaction with other pathways. We dissect the roles of androgen receptor in prostate cancer from molecular perspective to provide clues for battling prostate cancer, especially castration-resistant prostate cancer.
Collapse
Affiliation(s)
- Jieping Hu
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Gongxian Wang
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ting Sun
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| |
Collapse
|
7
|
Singh S, Zheng Y, Jagadeeswaran G, Ebron JS, Sikand K, Gupta S, Sunker R, Shukla GC. Deep sequencing of small RNA libraries from human prostate epithelial and stromal cells reveal distinct pattern of microRNAs primarily predicted to target growth factors. Cancer Lett 2015; 371:262-73. [PMID: 26655274 DOI: 10.1016/j.canlet.2015.10.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 10/05/2015] [Accepted: 10/07/2015] [Indexed: 01/14/2023]
Abstract
Complex epithelial and stromal cell interactions are required during the development and progression of prostate cancer. Regulatory small non-coding microRNAs (miRNAs) participate in the spatiotemporal regulation of messenger RNA (mRNA) and regulation of translation affecting a large number of genes involved in prostate carcinogenesis. In this study, through deep-sequencing of size fractionated small RNA libraries we profiled the miRNAs of prostate epithelial (PrEC) and stromal (PrSC) cells. Over 50 million reads were obtained for PrEC in which 860,468 were unique sequences. Similarly, nearly 76 million reads for PrSC were obtained in which over 1 million were unique reads. Expression of many miRNAs of broadly conserved and poorly conserved miRNA families were identified. Sixteen highly expressed miRNAs with significant change in expression in PrSC than PrEC were further analyzed in silico. ConsensusPathDB showed the target genes of these miRNAs were significantly involved in adherence junction, cell adhesion, EGRF, TGF-β and androgen signaling. Let-7 family of tumor-suppressor miRNAs expression was highly pervasive in both, PrEC and PrSC cells. In addition, we have also identified several miRNAs that are unique to PrEC or PrSC cells and their predicted putative targets are a group of transcription factors. This study provides perspective on the miRNA expression in PrEC and PrSC, and reveals a global trend in miRNA interactome. We conclude that the most abundant miRNAs are potential regulators of development and differentiation of the prostate gland by targeting a set of growth factors. Additionally, high level expression of the most members of let-7 family miRNAs suggests their role in the fine tuning of the growth and proliferation of prostate epithelial and stromal cells.
Collapse
Affiliation(s)
- Savita Singh
- Center of Gene Regulation in Health and Disease, Cleveland State University, Cleveland, OH 44115, USA; Department of Biological Sciences, Cleveland State University, Cleveland, OH 44115, USA
| | - Yun Zheng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 727 South Jingming Road, Kunming, Yunnan 650500, China
| | - Guru Jagadeeswaran
- Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK 74078, USA
| | - Jey Sabith Ebron
- Center of Gene Regulation in Health and Disease, Cleveland State University, Cleveland, OH 44115, USA; Department of Biological Sciences, Cleveland State University, Cleveland, OH 44115, USA
| | - Kavleen Sikand
- Department of Biochemistry, Basic Medical Sciences Block-II, Panjab University South Campus, Sector-25, Chandigarh, India
| | - Sanjay Gupta
- Department of Urology, Case Western Reserve University & University Hospitals Case Medical Center, Cleveland, OH 44106, USA
| | - Ramanjulu Sunker
- Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK 74078, USA
| | - Girish C Shukla
- Center of Gene Regulation in Health and Disease, Cleveland State University, Cleveland, OH 44115, USA; Department of Biological Sciences, Cleveland State University, Cleveland, OH 44115, USA.
| |
Collapse
|
8
|
Network analysis of an in vitro model of androgen-resistance in prostate cancer. BMC Cancer 2015; 15:883. [PMID: 26553226 PMCID: PMC4640359 DOI: 10.1186/s12885-015-1884-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 10/30/2015] [Indexed: 12/13/2022] Open
Abstract
Background The development of androgen resistance is a major limitation to androgen deprivation treatment in prostate cancer. We have developed an in vitro model of androgen-resistance to characterise molecular changes occurring as androgen resistance evolves over time. Our aim is to understand biological network profiles of transcriptomic changes occurring during the transition to androgen-resistance and to validate these changes between our in vitro model and clinical datasets (paired samples before and after androgen-deprivation therapy of patients with advanced prostate cancer). Methods We established an androgen-independent subline from LNCaP cells by prolonged exposure to androgen-deprivation. We examined phenotypic profiles and performed RNA-sequencing. The reads generated were compared to human clinical samples and were analysed using differential expression, pathway analysis and protein-protein interaction networks. Results After 24 weeks of androgen-deprivation, LNCaP cells had increased proliferative and invasive behaviour compared to parental LNCaP, and its growth was no longer responsive to androgen. We identified key genes and pathways that overlap between our cell line and clinical RNA sequencing datasets and analysed the overlapping protein-protein interaction network that shared the same pattern of behaviour in both datasets. Mechanisms bypassing androgen receptor signalling pathways are significantly enriched. Several steroid hormone receptors are differentially expressed in both datasets. In particular, the progesterone receptor is significantly differentially expressed and is part of the interaction network disrupted in both datasets. Other signalling pathways commonly altered in prostate cancer, MAPK and PI3K-Akt pathways, are significantly enriched in both datasets. Conclusions The overlap between the human and cell-line differential expression profiles and protein networks was statistically significant showing that the cell-line model reproduces molecular patterns observed in clinical castrate resistant prostate cancer samples, making this cell line a useful tool in understanding castrate resistant prostate cancer. Pathway analysis revealed similar patterns of enriched pathways from differentially expressed genes of both human clinical and cell line datasets. Our analysis revealed several potential mechanisms and network interactions, including cooperative behaviours of other nuclear receptors, in particular the subfamily of steroid hormone receptors such as PGR and alteration to gene expression in both the MAPK and PI3K-Akt signalling pathways. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1884-7) contains supplementary material, which is available to authorized users.
Collapse
|
9
|
Bacallao K, Plaza-Parrochia F, Cerda A, Gabler F, Romero C, Vantman D, Vega M. Levels of Regulatory Proteins Associated With Cell Proliferation in Endometria From Untreated Patients Having Polycystic Ovarian Syndrome With and Without Endometrial Hyperplasia. Reprod Sci 2015; 23:211-8. [DOI: 10.1177/1933719115597762] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- K. Bacallao
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
- Interdisciplinary Stem Cell Institute, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - F. Plaza-Parrochia
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - A. Cerda
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - F. Gabler
- Department of Pathology, School of Medicine, University of Chile, San Borja Arriarán Clinical Hospital, Santiago, Chile
| | - C. Romero
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - D. Vantman
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - M. Vega
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| |
Collapse
|
10
|
Danielpour D. Transforming Growth Factor-Beta in Prostate Cancer. Prostate Cancer 2013. [DOI: 10.1007/978-1-4614-6828-8_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|
11
|
Song K, Wang H, Krebs TL, Wang B, Kelley TJ, Danielpour D. DHT selectively reverses Smad3-mediated/TGF-beta-induced responses through transcriptional down-regulation of Smad3 in prostate epithelial cells. Mol Endocrinol 2010; 24:2019-29. [PMID: 20739403 DOI: 10.1210/me.2010-0165] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Androgens suppress TGF-β responses in the prostate through mechanisms that are not fully explored. We have recently reported that 5α-dihydrotestosterone (DHT) suppresses the ability of TGF-β to inhibit proliferation and induce apoptosis of prostatic epithelial cells and provided evidence that such suppression was fueled by transcriptional down-regulation of TGF-β receptor II (ΤβRII). We now show that androgen receptor (AR) activated by DHT suppresses the TGF-β-induced phosphorylation of Sma- and Mad-related protein (Smad)3 in LNCaP cells overexpressing TβRII under the control of a cytomegalovirus promoter, which is not regulated by DHT, suggesting that transcriptional repression of TβRII alone does not fully account for the impact of DHT on TGF-β responses. Instead, we demonstrate that such suppression occurs through loss of total Smad3, resulting from transcriptional suppression of Smad3. We provide evidence that DHT down-regulates the promoter activity of Smad3 in various prostate cancer cell lines, including NRP-154+AR, DU145+AR, LNCaP, and VCaP, at least partly through androgen-dependent inactivation of Sp1. Moreover, we show that overexpression of Smad3 reverses the ability of DHT to protect against TGF-β-induced apoptosis in NRP-154+AR, supporting our model that loss of Smad3 by DHT is involved in the protection against TGF-β-induced apoptosis. Together, these findings suggest that deregulated/enhanced expression and activation of AR in prostate carcinomas may intercept the tumor suppressor function of TGF-β through transcriptional suppression of Smad3, thereby providing new mechanistic insight into the development of castration-resistant prostate cancer.
Collapse
Affiliation(s)
- Kyung Song
- Case Comprehensive Cancer Center Research Laboratories, Division of Pediatric Hematology/Oncology, Rainbow Babies and Children's Hospital, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | | | | | | | | | | |
Collapse
|
12
|
van der Deen M, Akech J, Wang T, FitzGerald TJ, Altieri DC, Languino LR, Lian JB, van Wijnen AJ, Stein JL, Stein GS. The cancer-related Runx2 protein enhances cell growth and responses to androgen and TGFbeta in prostate cancer cells. J Cell Biochem 2010; 109:828-37. [PMID: 20082326 DOI: 10.1002/jcb.22463] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Prostate cancer cells often metastasize to bone where osteolytic lesions are formed. Runx2 is an essential transcription factor for bone formation and suppresses cell growth in normal osteoblasts but may function as an oncogenic factor in solid tumors (e.g., breast, prostate). Here, we addressed whether Runx2 is linked to steroid hormone and growth factor signaling, which controls prostate cancer cell growth. Protein expression profiling of prostate cell lines (i.e., PC3, LNCaP, RWPE) treated with 5alpha-dihydrotestosterone (DHT) or tumor growth factor beta (TGFbeta) revealed modulations in selected cyclins, cyclin-dependent kinases (CDKs), and CDK inhibitors that are generally consistent with mitogenic responses. Endogenous elevation of Runx2 and diminished p57 protein levels in PC3 cells are associated with faster proliferation in vitro and development of larger tumors upon xenografting these cells in bone in vivo. To examine whether TGFbeta or DHT signaling modulates the transcriptional activity of Runx2 and vice versa, we performed luciferase reporter assays. In PC3 cells that express TGFbetaRII, TGFbeta and Runx2 synergize to increase transcription of synthetic promoters. In LNCaP cells that are DHT responsive, Runx2 stimulates the androgen receptor (AR) responsive expression of the prostate-specific marker PSA, perhaps facilitated by formation of a complex with AR. Our data suggest that Runx2 is mechanistically linked to TGFbeta and androgen responsive pathways that support prostate cancer cell growth.
Collapse
Affiliation(s)
- Margaretha van der Deen
- Department of Cell Biology, University of Massachusetts Medical School, Worcester, Massachusetts 01655, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Park I, Lee KH, Lee D. Inference of combinatorial Boolean rules of synergistic gene sets from cancer microarray datasets. ACTA ACUST UNITED AC 2010; 26:1506-12. [PMID: 20410052 DOI: 10.1093/bioinformatics/btq207] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
MOTIVATION Gene set analysis has become an important tool for the functional interpretation of high-throughput gene expression datasets. Moreover, pattern analyses based on inferred gene set activities of individual samples have shown the ability to identify more robust disease signatures than individual gene-based pattern analyses. Although a number of approaches have been proposed for gene set-based pattern analysis, the combinatorial influence of deregulated gene sets on disease phenotype classification has not been studied sufficiently. RESULTS We propose a new approach for inferring combinatorial Boolean rules of gene sets for a better understanding of cancer transcriptome and cancer classification. To reduce the search space of the possible Boolean rules, we identify small groups of gene sets that synergistically contribute to the classification of samples into their corresponding phenotypic groups (such as normal and cancer). We then measure the significance of the candidate Boolean rules derived from each group of gene sets; the level of significance is based on the class entropy of the samples selected in accordance with the rules. By applying the present approach to publicly available prostate cancer datasets, we identified 72 significant Boolean rules. Finally, we discuss several identified Boolean rules, such as the rule of glutathione metabolism (down) and prostaglandin synthesis regulation (down), which are consistent with known prostate cancer biology. AVAILABILITY Scripts written in Python and R are available at http://biosoft.kaist.ac.kr/~ihpark/. The refined gene sets and the full list of the identified Boolean rules are provided in the Supplementary Material. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
Collapse
Affiliation(s)
- Inho Park
- Department of Bio and Brain Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | | | | |
Collapse
|
14
|
Wegiel B, Jiborn T, Abrahamson M, Helczynski L, Otterbein L, Persson JL, Bjartell A. Cystatin C is downregulated in prostate cancer and modulates invasion of prostate cancer cells via MAPK/Erk and androgen receptor pathways. PLoS One 2009; 4:e7953. [PMID: 19956729 PMCID: PMC2776515 DOI: 10.1371/journal.pone.0007953] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2009] [Accepted: 10/29/2009] [Indexed: 01/20/2023] Open
Abstract
Cystatin C is believed to prevent tumor progression by inhibiting the activities of a family of lysosomal cysteine proteases. However, little is known about the precise mechanism of cystatin C function in prostate cancer. In the present study, we examined the expression of cystatin C and its association with matrix metalloproteinases 2 (MMP2) and androgen receptor (AR) in a tissue microarray comparing benign and malignant specimens from 448 patients who underwent radical prostatectomy for localized prostate cancer. Cystatin C expression was significantly lower in cancer specimens than in benign tissues (p<0.001) and there was a statistically significant inverse correlation between expression of cystatin C and MMP2 (rs2 = −0.056, p = 0.05). There was a clear trend that patients with decreased level of cystatin C had lower overall survival. Targeted inhibition of cystatin C using specific siRNA resulted in an increased invasiveness of PC3 cells, whereas induction of cystatin C overexpression greatly reduced invasion rate of PC3 in vitro. The effect of cystatin C on modulating the PC3 cell invasion was provoked by Erk2 inhibitor that specifically inhibited MAPK/Erk2 activity. This suggests that cystatin C may mediate tumor cell invasion by modulating the activity of MAPK/Erk cascades. Consistent with our immunohistochemical findings that patients with low expression of cystatin C and high expression of androgen receptor (AR) tend to have worse overall survival than patients with high expression of cystatin C and high AR expression, induced overexpression of AR in PC3 cells expressing cystatin C siRNA greatly enhanced the invasiveness of PC3 cells. This suggests that there may be a crosstalk between cystatin C and AR-mediated pathways. Our study uncovers a novel role for cystatin C and its associated cellular pathways in prostate cancer invasion and metastasis.
Collapse
Affiliation(s)
- Barbara Wegiel
- Department of Clinical Sciences, Division of Urological Cancers, Clinical Research Center, University Hospital Malmö, Lund University, Malmö, Sweden
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Thomas Jiborn
- Department of Clinical Sciences, Division of Urological Cancers, Clinical Research Center, University Hospital Malmö, Lund University, Malmö, Sweden
| | - Magnus Abrahamson
- Department of Laboratory Medicine, Division of Clinical Chemistry and Pharmacology, Lund University Hospital, Lund University, Lund, Sweden
| | - Leszek Helczynski
- Department of Pathology, Clinical Research Center, University Hospital Malmö, Lund University, Malmö, Sweden
| | - Leo Otterbein
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Jenny Liao Persson
- Department of Laboratory Medicine, Clinical Research Center, University Hospital Malmö, Lund University, Malmö, Sweden
- * E-mail:
| | - Anders Bjartell
- Department of Clinical Sciences, Division of Urological Cancers, Clinical Research Center, University Hospital Malmö, Lund University, Malmö, Sweden
| |
Collapse
|
15
|
Kikuchi M, Okumura F, Tsukiyama T, Watanabe M, Miyajima N, Tanaka J, Imamura M, Hatakeyama S. TRIM24 mediates ligand-dependent activation of androgen receptor and is repressed by a bromodomain-containing protein, BRD7, in prostate cancer cells. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2009; 1793:1828-36. [PMID: 19909775 DOI: 10.1016/j.bbamcr.2009.11.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Revised: 10/14/2009] [Accepted: 11/02/2009] [Indexed: 10/20/2022]
Abstract
The androgen receptor (AR) is a ligand-dependent transcription factor that belongs to the family of nuclear receptors, and its activity is regulated by numerous AR coregulators. AR plays an important role in prostate development and cancer. In this study, we found that TRIM24/transcriptional intermediary factor 1alpha (TIF1alpha), which is known as a ligand-dependent nuclear receptor co-regulator, interacts with AR and enhances transcriptional activity of AR by dihydrotestosterone in prostate cancer cells. We showed that TRIM24 functionally interacts with TIP60, which acts as a coactivator of AR and synergizes with TIP60 in the transactivation of AR. We also showed that TRIM24 binds to bromodomain containing 7 (BRD7), which can negatively regulate cell proliferation and growth. A luciferase assay indicated that BRD7 represses the AR transactivation activity upregulated by TRIM24. These findings indicate that TRIM24 regulates AR-mediated transcription in collaboration with TIP60 and BRD7.
Collapse
Affiliation(s)
- Misato Kikuchi
- Department of Biochemistry, Hokkaido University Graduate School of Medicine, N15, W7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Pu H, Collazo J, Jones E, Gayheart D, Sakamoto S, Vogt A, Mitchell B, Kyprianou N. Dysfunctional transforming growth factor-beta receptor II accelerates prostate tumorigenesis in the TRAMP mouse model. Cancer Res 2009; 69:7366-74. [PMID: 19738062 DOI: 10.1158/0008-5472.can-09-0758] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The contribution of a dysfunctional transforming growth factor-beta type II receptor (TGF beta RII) to prostate cancer initiation and progression was investigated in an in vivo mouse model. Transgenic mice harboring the dominant-negative mutant TGF-beta type II receptor (DNTGF beta RII) in mouse epithelial cell were crossed with the TRAMP prostate cancer transgenic mouse to characterize the in vivo consequences of inactivated TGF-beta signaling on prostate tumor initiation and progression. Histopathologic diagnosis of prostate specimens from the TRAMP+/DNTGF beta RII double transgenic mice revealed the appearance of early malignant changes and subsequently highly aggressive prostate tumors at a younger age, compared with littermates TRAMP+/Wt TGF beta RII mice. Immunohistochemical and Western blotting analysis revealed significantly increased proliferative and apoptotic activities, as well as vascularity and macrophage infiltration that correlated with an elevated vascular endothelial growth factor and MCP-1 protein levels in prostates from TRAMP+/DNTGF beta RII+ mice. An epithelial-mesenchymal transition (EMT) effect was also detected in prostates of TRAMP+/DNTGF beta RII mice, as documented by the loss of epithelial markers (E-cadherin and beta-catenin) and up-regulation of mesenchymal markers (N-cadherin) and EMT-transcription factor Snail. A significant increase in the androgen receptor mRNA and protein levels was associated with the early onset of prostate tumorigenesis in TRAMP+/DNTGF beta RII mice. Our results indicate that in vivo disruption of TGF-beta signaling accelerates the pathologic malignant changes in the prostate by altering the kinetics of prostate growth and inducing EMT. The study also suggests that a dysfunctional TGF beta RII augments androgen receptor expression and promotes inflammation in early stage tumor growth, thus conferring a significant contribution by TGF-beta to prostate cancer progression.
Collapse
Affiliation(s)
- Hong Pu
- Department of Surgery/Urology, University of Kentucky College of Medicine, Lexington, Kentucky, USA
| | | | | | | | | | | | | | | |
Collapse
|
17
|
Jones E, Pu H, Kyprianou N. Targeting TGF-beta in prostate cancer: therapeutic possibilities during tumor progression. Expert Opin Ther Targets 2009; 13:227-34. [PMID: 19236240 DOI: 10.1517/14728220802705696] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND TGF-beta regulates prostate growth by inhibiting epithelial cell proliferation and inducing apoptosis through eliciting a dynamic signaling pathway. In metastatic prostate cancer, however, TGF-beta serves as a tumor promoter. TGF-beta engages Smad-dependent and Smad-independent mechanisms to exert its action. During prostate tumorigenesis, prostate cells exhibit loss or mutation of TGF-beta transmembrane receptors. Increased production of TGF-beta causes immunosuppression, extracellular matrix degradation, epithelia to mesenchymal transition and angiogenesis that promotes tumor cell invasion and metastasis. OBJECTIVE The molecular basis for effective therapeutic targeting of TGF-beta must be directed towards the double-edge-sword nature of the cytokine: inhibiting the TGF-beta tumor promoter capabilities in advanced metastatic prostate cancer, although retaining the growth-inhibitory abilities exhibited in early stages of prostate tumorigenesis. RESULTS/CONCLUSION The current understanding of the therapeutic possibilities of targeting TGF-beta signaling during prostate tumor progression is built on preclinical studies. Studies targeting TGF-beta signaling pathway for the treatment of several human malignancies include the use of neutralizing antibodies, antisense oligonucelotides and small molecule inhibitors of kinase activity of the receptor complex. This review focuses on exploiting the therapeutic potential of targeting TGF-beta signaling in the context of its contribution to prostate cancer initiation and progression to metastasis.
Collapse
Affiliation(s)
- Elisabeth Jones
- University of Kentucky, Surgery/Urology and Markey Cancer Center, 306 Combs Building, 800 Rose Street, Lexington, KY 40536, USA
| | | | | |
Collapse
|
18
|
Yoo KS, Nastiuk KL, Krolewski JJ. Transforming growth factor ß1 induces apoptosis by suppressing FLICE-like inhibitory protein in DU145 prostate epithelial cells. Int J Cancer 2009; 124:834-42. [DOI: 10.1002/ijc.24024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
19
|
Minelli A, Bellezza I, Conte C, Culig Z. Oxidative stress-related aging: A role for prostate cancer? Biochim Biophys Acta Rev Cancer 2008; 1795:83-91. [PMID: 19121370 DOI: 10.1016/j.bbcan.2008.11.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2008] [Revised: 11/21/2008] [Accepted: 11/26/2008] [Indexed: 11/18/2022]
Abstract
Prostate cancer has the highest prevalence of any non-cutaneous cancer in the human body and essentially all men with circulating androgens will develop microscopic prostate cancer if they live long enough. Aging, considered as an impairment of body functions over time, caused by the accumulation of molecular damage in DNA, proteins and lipids, is also characterized by an increase in intracellular oxidative stress due to the progressive decrease of the intracellular ROS scavenging. The aging damage may eventually appear in age-related health issues, which have a significant impact on the independence, general well-being and morbidity of the elderly. The association of aging with prostate cancer is undisputable as well as the association of aging with oxidative stress. Nevertheless, supportive evidence linking an increase in oxidative stress with prostate cancer is still scarce. This review is a comprehensive, literature-based analysis of the association of human prostate cancer with oxidative stress. The objective was to examine the involvement of reactive oxygen species in the mechanisms of prostatic carcinogenesis since the understanding of risk factors for prostate cancer has practical importance for public health, genetic and nutritional education, and chemoprevention.
Collapse
Affiliation(s)
- Alba Minelli
- Dipartimento di Medicina Sperimentale Scienze Biochimiche, Sezione Biochimica Cellulare, Università di Perugia, via del Giochetto, 06123 Perugia, Italy.
| | | | | | | |
Collapse
|
20
|
Pathophysiologie und Therapie der benignen Prostata-Hyperplasie. Wien Klin Wochenschr 2008; 120:390-401. [DOI: 10.1007/s00508-008-0986-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2008] [Accepted: 05/21/2008] [Indexed: 12/17/2022]
|
21
|
Periyasamy S, Warrier M, Tillekeratne MPM, Shou W, Sanchez ER. The immunophilin ligands cyclosporin A and FK506 suppress prostate cancer cell growth by androgen receptor-dependent and -independent mechanisms. Endocrinology 2007; 148:4716-26. [PMID: 17615153 PMCID: PMC2639775 DOI: 10.1210/en.2007-0145] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The androgen receptor (AR) contributes to growth of prostate cancer even under conditions of androgen ablation. Thus, new strategies to target AR activity are needed. The AR interacts with the immunophilin FK506-binding protein 52 (FKBP52), and studies in the FKBP52 knockout mouse have shown that this protein is essential to AR activity in the prostate. Therefore, we tested whether the immunophilin ligand FK506 affected AR activity in prostate cancer cell lines. We also tested the hypothesis that the AR interacts with another immunophilin, cyclophilin 40 (Cyp40), and is regulated by its cognate ligand cyclosporin A (CsA). We show that levels of FKBP52, FKBP51, Cyp40, and a related co-chaperone PP5 were much higher in prostate cancer cells lines [(LNCaP), PC-3, and DU145] compared with primary prostate cells, and that the AR of LNCaP cells can interact with Cyp40. In the absence of androgen, CsA caused inhibition of cell growth in the AR-positive LNCaP and AR-negative PC-3 and DU145 cell lines. Interestingly, FK506 only inhibited LNCaP cells, suggesting a dependence on the AR for this effect. Both CsA and FK506 inhibited growth without inducing apoptosis. In LNCaP cells, CsA completely blocked androgen-stimulated growth, whereas FK506 was partially effective. Further studies in LNCaP cells revealed that CsA and FK506 were able to block or attenuate several stages of AR signaling, including hormone binding, nuclear translocation, and activity at several AR-responsive reporter and endogenous genes. These findings provide the first evidence that CsA and FK506 can negatively modulate proliferation of prostate cells in vitro. Immunophilins may now serve as new targets to disrupt AR-mediated prostate cancer growth.
Collapse
Affiliation(s)
- Sumudra Periyasamy
- Department of Physiology and Pharmacology, University of Toledo College of Medicine, 3035 Arlington Avenue, Toledo, OH 43614-5804, USA.
| | | | | | | | | |
Collapse
|
22
|
Barendrecht MM, Mulders ACM, van der Poel H, van den Hoff MJB, Schmidt M, Michel MC. Role of Transforming Growth Factor β in Rat Bladder Smooth Muscle Cell Proliferation. J Pharmacol Exp Ther 2007; 322:117-22. [PMID: 17435108 DOI: 10.1124/jpet.106.119115] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Conditions associated with hypertrophy of the urinary bladder have repeatedly been associated with an increased urinary excretion of transforming growth factor (TGF) beta in both rats and patients. Because TGFbeta can have both growth-promoting and -inhibiting effects, we have studied its effects on cell growth and death in primary cultures of rat bladder smooth muscle cells. TGFbeta1, TGFbeta2, or TGFbeta3 did not cause apoptosis, but all three isoforms inhibited DNA synthesis with similar potency (EC(50) of approximately 0.1 ng/ml) and efficacy. Such inhibition was antagonized by a specific TGFbeta receptor antagonist and independent of the presence of serum. Mitogen-activated protein kinases (MAPKs) are involved in the control of cell growth, and all three TGFbeta isoforms inhibited activation of the extracellular signal-regulated kinase, c-Jun NH(2)-terminal kinase, and p38 MAPK subfamilies. Nevertheless, the inhibitory effects of the TGFbeta isoforms on DNA synthesis were not affected by presence of inhibitors of the three MAPK pathways. TGFbeta did not alter cell size as measured by flow cytometry or mitochondrial activity, an integrated measure of cell size and number. We conclude that our data do not support the hypothesis that TGFbeta is a mediator of rat bladder hypertrophy.
Collapse
Affiliation(s)
- Maurits M Barendrecht
- Department of Pharmacology and Pharmacotherapy, Academic Medical Center, Meibergdreef 15, 1105 AZ Amsterdam, The Netherlands
| | | | | | | | | | | |
Collapse
|
23
|
Lange CA, Gioeli D, Hammes SR, Marker PC. Integration of Rapid Signaling Events with Steroid Hormone Receptor Action in Breast and Prostate Cancer. Annu Rev Physiol 2007; 69:171-99. [PMID: 17037979 DOI: 10.1146/annurev.physiol.69.031905.160319] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Steroid hormone receptors (SRs) are ligand-activated transcription factors and sensors for growth factor-initiated signaling pathways in hormonally regulated tissues, such as the breast or prostate. Recent discoveries suggest that several protein kinases are rapidly activated in response to steroid hormone binding to cytoplasmic SRs. Induction of rapid signaling upon SR ligand binding ensures that receptors and coregulators are appropriately phosphorylated as part of optimal transcription complexes. Alternatively, SR-activated kinase cascades provide additional avenues for SR-regulated gene expression independent of SR nuclear action. We provide an overview of SR and signaling cross talk in breast and prostate cancers, using the human progesterone receptor (PR) and androgen receptor (AR) as models. Kinases are emerging as key mediators of SR action. Cross talk between SR and membrane-initiated signaling events suggests a mechanism for coordinate regulation of gene subsets by mitogenic stimuli in hormonally responsive normal tissues; such cross talk is suspected to contribute to cancer biology.
Collapse
Affiliation(s)
- Carol A Lange
- Department of Medicine (Division of Hematology, Oncology, and Transplant), USA.
| | | | | | | |
Collapse
|
24
|
Abstract
Ageing of the male reproductive system is characterized by changes in the endocrine system, hypogonadism, erectile dysfunction and proliferative disorders of the prostate gland. Stochastic damage accumulating within ageing leads to progressive dysregulation at each level of the hypothalamic-pituitary-gonadal (HPG) axis and in local auto/paracrine interactions, thereby inducing morphological changes in reproductive target organs, such as the prostate, testis and penis. Despite age-related changes in the HPG axis, endocrine functions are generally sufficient to maintain fertility in elderly men. Ageing of the male reproductive system can give rise to clinically relevant manifestations, such as benign prostatic hyperplasia (BPH), prostate cancer (PCa) and erectile dysfunction (ED). In this review, we discuss morphological/histological changes occurring in these organs and current views and concepts of the underlying pathology. Moreover, we emphasize the molecular/cellular pathways leading to reduced testicular/penile function and proliferative disorders of the prostate gland.
Collapse
Affiliation(s)
- N Sampson
- Institute for Biomedical Ageing Research, Austrian Academy of Sciences, Innsbruck, Austria
| | | | | | | |
Collapse
|
25
|
van der Poel HG. Molecular markers in the diagnosis of prostate cancer. Crit Rev Oncol Hematol 2006; 61:104-39. [PMID: 16945550 DOI: 10.1016/j.critrevonc.2006.07.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2006] [Revised: 06/30/2006] [Accepted: 07/07/2006] [Indexed: 01/17/2023] Open
Abstract
The genetic alterations leading to prostate cancer are gradually being discovered. A wide variety of genes have been associated with prostate cancer development as well as tumor progression. Knowledge of gene polymorphisms associated with disease aid in the understanding of important pathways involved in this process and may result in the near future in clinical applications. Urinary molecular markers will soon be available to aid in the decision of repeat prostate biopsies. Recent findings suggest the importance of androgen signaling in disease development and progression. The further understanding of interaction of inflammation, diet, and genetic predisposition will improve risk stratification in the near future.
Collapse
Affiliation(s)
- H G van der Poel
- Department of Urology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands.
| |
Collapse
|