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Gangavarapu KJ, Jowdy PF, Foster BA, Huss WJ. Role of prostate stem cells and treatment strategies in benign prostate hyperplasia. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL UROLOGY 2022; 10:154-169. [PMID: 35874288 PMCID: PMC9301063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 04/25/2022] [Indexed: 06/15/2023]
Abstract
Benign prostate hyperplasia (BPH) is a progressive disease with a direct correlation between incidence and age. Since the treatment and management of BPH involve harmful side effects and decreased quality of life for the patient, the primary focus of research should be to find better and longer-lasting therapeutic options. The mechanisms regulating prostate stem cells in development can be exploited to decrease prostate growth. BPH is defined as the overgrowth of the prostate, and BPH is often diagnosed when lower urinary tract symptoms (LUTS) of urine storage or voiding symptoms cause patients to seek treatment. While multiple factors are involved in the hyperplastic growth of the stromal and epithelial compartments of the prostate, the clonal proliferation of stem cells is considered one of the main reasons for BPH initiation and regrowth of the prostate after therapies for BPH fail. Several theories explain possible reasons for the involvement of stem cells in the development, progression, and pathogenesis of BPH. The aim of the current review is to discuss current literature on the fundamentals of prostate development and the role of stem cells in BPH. This review examines the rationale for the hypothesis that unregulated stem cell properties can lead to BPH and therapeutic targeting of stem cells may reduce treatment-related side effects and prevent the regrowth of the prostate.
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Affiliation(s)
- Kalyan J Gangavarapu
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263, USA
| | - Peter F Jowdy
- Department of Dermatology, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263, USA
- Jacobs School of Medicine and Biomedical Sciences, University at BuffaloBuffalo, NY 14203, USA
| | - Barbara A Foster
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263, USA
| | - Wendy J Huss
- Department of Dermatology, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263, USA
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263, USA
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2
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Hu WY, Hu DP, Xie L, Nonn L, Lu R, Abern M, Shioda T, Prins GS. Keratin Profiling by Single-Cell RNA-Sequencing Identifies Human Prostate Stem Cell Lineage Hierarchy and Cancer Stem-Like Cells. Int J Mol Sci 2021; 22:ijms22158109. [PMID: 34360875 PMCID: PMC8346986 DOI: 10.3390/ijms22158109] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/23/2021] [Accepted: 07/26/2021] [Indexed: 01/10/2023] Open
Abstract
Single prostate stem cells can generate stem and progenitor cells to form prostaspheres in 3D culture. Using a prostasphere-based label retention assay, we recently identified keratin 13 (KRT13)-enriched prostate stem cells at single-cell resolution, distinguishing them from daughter progenitors. Herein, we characterized the epithelial cell lineage hierarchy in prostaspheres using single-cell RNA-seq analysis. Keratin profiling revealed three clusters of label-retaining prostate stem cells; cluster I represents quiescent stem cells (PSCA, CD36, SPINK1, and KRT13/23/80/78/4 enriched), while clusters II and III represent active stem and bipotent progenitor cells (KRT16/17/6 enriched). Gene set enrichment analysis revealed enrichment of stem and cancer-related pathways in cluster I. In non-label-retaining daughter progenitor cells, three clusters were identified; cluster IV represents basal progenitors (KRT5/14/6/16 enriched), while clusters V and VI represent early and late-stage luminal progenitors, respectively (KRT8/18/10 enriched). Furthermore, MetaCore analysis showed enrichment of the “cytoskeleton remodeling–keratin filaments” pathway in cancer stem-like cells from human prostate cancer specimens. Along with common keratins (KRT13/23/80/78/4) in normal stem cells, unique keratins (KRT10/19/6C/16) were enriched in cancer stem-like cells. Clarification of these keratin profiles in human prostate stem cell lineage hierarchy and cancer stem-like cells can facilitate the identification and therapeutic targeting of prostate cancer stem-like cells.
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Affiliation(s)
- Wen-Yang Hu
- Department of Urology, University of Illinois at Chicago, Chicago, IL 60612, USA; (D.-P.H.); (L.X.); (R.L.); (M.A.); (G.S.P.)
- Correspondence:
| | - Dan-Ping Hu
- Department of Urology, University of Illinois at Chicago, Chicago, IL 60612, USA; (D.-P.H.); (L.X.); (R.L.); (M.A.); (G.S.P.)
| | - Lishi Xie
- Department of Urology, University of Illinois at Chicago, Chicago, IL 60612, USA; (D.-P.H.); (L.X.); (R.L.); (M.A.); (G.S.P.)
| | - Larisa Nonn
- Department of Pathology, University of Illinois at Chicago, Chicago, IL 60612, USA;
| | - Ranli Lu
- Department of Urology, University of Illinois at Chicago, Chicago, IL 60612, USA; (D.-P.H.); (L.X.); (R.L.); (M.A.); (G.S.P.)
| | - Michael Abern
- Department of Urology, University of Illinois at Chicago, Chicago, IL 60612, USA; (D.-P.H.); (L.X.); (R.L.); (M.A.); (G.S.P.)
| | - Toshihiro Shioda
- Massachusetts General Hospital Center for Cancer Research and Harvard Medical School, Charlestown, MA 02129, USA;
| | - Gail S. Prins
- Department of Urology, University of Illinois at Chicago, Chicago, IL 60612, USA; (D.-P.H.); (L.X.); (R.L.); (M.A.); (G.S.P.)
- Department of Pathology, University of Illinois at Chicago, Chicago, IL 60612, USA;
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Tostivint V, Racaud-Sultan C, Roumiguié M, Soulié M, Gamé X, Beauval JB. [Progress in prostate cancer study: 3D cell culture enables the ex vivo reproduction of tumor characteristics]. Presse Med 2017; 46:954-965. [PMID: 28967525 DOI: 10.1016/j.lpm.2017.06.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 01/11/2017] [Accepted: 06/16/2017] [Indexed: 12/18/2022] Open
Abstract
Despite new therapeutics options, Prostate Cancer (PCa) remains a public health challenge because of its high incidence and mortality. Limits in PCa research come from the lack of in vitro and in vivo models that mimic the human disease. Currently, 2D in vitro tissue culture models of PCa are widely used but they present numerous limits. They do not reproduce cellular morphology, tissue architecture, inter-patients and intratumor heterogeneity. Furthermore, they lack two key components of PCa tumors, the tumoral microenvironment and the cancer stem cells. In vivo murine models of PCa cannot be representative of all the genetic alterations known in prostate tumors and they hardly reproduce the pathophysiology of human metastatic progression. Consequently, the physiology of these in vitro and in vivo models do not well represent patients tumors. 3D cell cultures overcome many of these limits by sharing morphologic characteristics with in vivo tumors as well as reproducibility of in vitro models. 3D models of PCa include spheroids derived from tumor cell lines, and organoids, derived from patient. In 3D cell cultures, cell fitness is maintained, the physiological cells-cells and cell-matrix interactions are restored and an extracellular matrix surrounds the cells. Organoids, generated from PCa primary tumors or metastases, allow studies on cancer stem cells and their microenvironment. Moreover, organoids retain genetic integrity of PCa tumors. PCa organoid model is an innovative tool that offers great perspectives of therapeutic screening. In the future, organoids generated from patients' biopsies may also lead to personalized medicine.
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Affiliation(s)
- Victor Tostivint
- Hôpital Rangueil, TSA 50032, 1, avenue du professeur Jean-Poulhès, 31059 Toulouse cedex 9, France.
| | - Claire Racaud-Sultan
- IRSD, université de Toulouse, Inserm, Inra, ENVT, UPS, CS 60039, place du docteur Baylac, 31024 Toulouse cedex 3, France.
| | - Mathieu Roumiguié
- Hôpital Rangueil, TSA 50032, 1, avenue du professeur Jean-Poulhès, 31059 Toulouse cedex 9, France.
| | - Michel Soulié
- Hôpital Rangueil, TSA 50032, 1, avenue du professeur Jean-Poulhès, 31059 Toulouse cedex 9, France.
| | - Xavier Gamé
- Hôpital Rangueil, TSA 50032, 1, avenue du professeur Jean-Poulhès, 31059 Toulouse cedex 9, France.
| | - Jean-Baptiste Beauval
- Hôpital Rangueil, TSA 50032, 1, avenue du professeur Jean-Poulhès, 31059 Toulouse cedex 9, France.
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Pakula H, Xiang D, Li Z. A Tale of Two Signals: AR and WNT in Development and Tumorigenesis of Prostate and Mammary Gland. Cancers (Basel) 2017; 9:E14. [PMID: 28134791 PMCID: PMC5332937 DOI: 10.3390/cancers9020014] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 01/19/2017] [Accepted: 01/24/2017] [Indexed: 12/13/2022] Open
Abstract
Prostate cancer (PCa) is one of the most common cancers and among the leading causes of cancer deaths for men in industrialized countries. It has long been recognized that the prostate is an androgen-dependent organ and PCa is an androgen-dependent disease. Androgen action is mediated by the androgen receptor (AR). Androgen deprivation therapy (ADT) is the standard treatment for metastatic PCa. However, almost all advanced PCa cases progress to castration-resistant prostate cancer (CRPC) after a period of ADT. A variety of mechanisms of progression from androgen-dependent PCa to CRPC under ADT have been postulated, but it remains largely unclear as to when and how castration resistance arises within prostate tumors. In addition, AR signaling may be modulated by extracellular factors among which are the cysteine-rich glycoproteins WNTs. The WNTs are capable of signaling through several pathways, the best-characterized being the canonical WNT/β-catenin/TCF-mediated canonical pathway. Recent studies from sequencing PCa genomes revealed that CRPC cells frequently harbor mutations in major components of the WNT/β-catenin pathway. Moreover, the finding of an interaction between β-catenin and AR suggests a possible mechanism of cross talk between WNT and androgen/AR signaling pathways. In this review, we discuss the current knowledge of both AR and WNT pathways in prostate development and tumorigenesis, and their interaction during development of CRPC. We also review the possible therapeutic application of drugs that target both AR and WNT/β-catenin pathways. Finally, we extend our review of AR and WNT signaling to the mammary gland system and breast cancer. We highlight that the role of AR signaling and its interaction with WNT signaling in these two hormone-related cancer types are highly context-dependent.
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Affiliation(s)
- Hubert Pakula
- Division of Genetics, Brigham and Women's Hospital, 77 Avenue Louis Pasteur, Room 466, Boston, MA 02115, USA.
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.
| | - Dongxi Xiang
- Division of Genetics, Brigham and Women's Hospital, 77 Avenue Louis Pasteur, Room 466, Boston, MA 02115, USA.
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.
| | - Zhe Li
- Division of Genetics, Brigham and Women's Hospital, 77 Avenue Louis Pasteur, Room 466, Boston, MA 02115, USA.
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.
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Bolt CC, Negi S, Guimarães-Camboa N, Zhang H, Troy JM, Lu X, Kispert A, Evans SM, Stubbs L. Tbx18 Regulates the Differentiation of Periductal Smooth Muscle Stroma and the Maintenance of Epithelial Integrity in the Prostate. PLoS One 2016; 11:e0154413. [PMID: 27120339 PMCID: PMC4847854 DOI: 10.1371/journal.pone.0154413] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Accepted: 04/13/2016] [Indexed: 11/18/2022] Open
Abstract
The T-box transcription factor TBX18 is essential to mesenchymal cell differentiation in several tissues and Tbx18 loss-of-function results in dramatic organ malformations and perinatal lethality. Here we demonstrate for the first time that Tbx18 is required for the normal development of periductal smooth muscle stromal cells in prostate, particularly in the anterior lobe, with a clear impact on prostate health in adult mice. Prostate abnormalities are only subtly apparent in Tbx18 mutants at birth; to examine postnatal prostate development we utilized a relatively long-lived hypomorphic mutant and a novel conditional Tbx18 allele. Similar to the ureter, cells that fail to express Tbx18 do not condense normally into smooth muscle cells of the periductal prostatic stroma. However, in contrast to ureter, the periductal stromal cells in mutant prostate assume a hypertrophic, myofibroblastic state and the adjacent epithelium becomes grossly disorganized. To identify molecular events preceding the onset of this pathology, we compared gene expression in the urogenital sinus (UGS), from which the prostate develops, in Tbx18-null and wild type littermates at two embryonic stages. Genes that regulate cell proliferation, smooth muscle differentiation, prostate epithelium development, and inflammatory response were significantly dysregulated in the mutant urogenital sinus around the time that Tbx18 is first expressed in the wild type UGS, suggesting a direct role in regulating those genes. Together, these results argue that Tbx18 is essential to the differentiation and maintenance of the prostate periurethral mesenchyme and that it indirectly regulates epithelial differentiation through control of stromal-epithelial signaling.
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Affiliation(s)
- C. Chase Bolt
- Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
| | - Soumya Negi
- Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
| | - Nuno Guimarães-Camboa
- Skaggs School of Pharmacy, Department of Medicine, and Department of Pharmacology, University of California San Diego, La Jolla, CA, United States of America, 92037
| | - Huimin Zhang
- Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
| | - Joseph M. Troy
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
- Illinois Informatics Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
| | - Xiaochen Lu
- Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
| | - Andreas Kispert
- Institut für Molekularbiologie, OE5250, Medizinische Hochschule Hannover, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Sylvia M. Evans
- Skaggs School of Pharmacy, Department of Medicine, and Department of Pharmacology, University of California San Diego, La Jolla, CA, United States of America, 92037
| | - Lisa Stubbs
- Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
- Illinois Informatics Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America, 61801
- * E-mail:
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6
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Lee SH, Johnson DT, Luong R, Yu EJ, Cunha GR, Nusse R, Sun Z. Wnt/β-Catenin-Responsive Cells in Prostatic Development and Regeneration. Stem Cells 2015. [PMID: 26220362 DOI: 10.1002/stem.2096] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The precise role of Wnt/β-catenin signaling during prostatic development and tumorigenesis is unclear. Axin2 is a direct transcriptional target of β-catenin. Recent studies have shown that Axin2-expressing cells have stem/progenitor cell properties in a variety of mouse tissues. Here, we genetically labeled Axin2-expressing cells at various time points and tracked their cellular behavior at different developmental and mature stages. We found that prostatic Axin2-expressing cells mainly express luminal epithelial cell markers and are able to expand luminal cell lineages during prostatic development and maturation. They can also survive androgen withdrawal and regenerate prostatic luminal epithelial cells following androgen replacement. Deletion of β-catenin or expression of stabilized β-catenin in these Axin2-expressing cells results in abnormal development or oncogenic transformation, respectively. Our study uncovers a critical role of Wnt/β-catenin-responsive cells in prostatic development and regeneration, and that dysregulation of Wnt/β-catenin signaling in these cells contributes to prostatic developmental defects and tumorigenesis.
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Affiliation(s)
- Suk Hyung Lee
- Department of Urology, Stanford University School of Medicine, Stanford, California, USA
| | - Daniel T Johnson
- Department of Urology, Stanford University School of Medicine, Stanford, California, USA
| | - Richard Luong
- Department of Comparative Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Eun Jeong Yu
- Department of Urology, Stanford University School of Medicine, Stanford, California, USA
| | - Gerald R Cunha
- Department of Urology, School of Medicine, University of California San Francisco, San Francisco, California, USA
| | - Roel Nusse
- Department of Developmental Biology and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California, USA
| | - Zijie Sun
- Department of Urology, Stanford University School of Medicine, Stanford, California, USA
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7
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Peng Y, Chen Q, Gu M, Chen Y, Zhang M, Zhou J, Wang H, Gao Y, Li W, Wang Z, Cai Z. Human Stromal Cells in the Peripheral Zone of the Prostate Promote Tumorigenesis of Prostatic Cancer Stem Cells through Up-regulation of C-Kit Expression. J Cancer 2015; 6:776-85. [PMID: 26185540 PMCID: PMC4504114 DOI: 10.7150/jca.9961] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 09/05/2014] [Indexed: 12/19/2022] Open
Abstract
Objective: Most prostate cancers originate from the prostatic peripheral zone (PZ). We tested the hypothesis that the stromal cells from PZ and transitional zone (TZ) have differential effects on the ability of tumorigenesis. Methods: Stromal cells isolated from the PZ and TZ of normal human prostates mixed with DU145 cells subcutaneously injected into athymic nude mice. The volume and weight of tumors was measured and analyzing the ability of purified DU145 cells isolated from the tumors to migrate and proliferate. The expression patterns of stem cell-specific genes of these DU145 cells were examined. The C-Kit inhibitor, imatinib mesylate, was administrated to confirm the effect of stromal cells on the tumorigenesis. Results: The volume and weight of tumors were significantly higher in mice transplanted with DU145 and stromal cells from PZ. In contrast, the data was significantly lower with DU145 and stromal cells from TZ than DU145 alone. The purified DU145 cells isolated from the tumors with DU145 and stromal cells in PZ had increased ability to migrate and proliferate, and had increased expression of C-Kit. These effects of the stromal cells in the PZ on DU145 cells could be blocked using imatinib mesylate. Conclusions: Human stromal cells in the PZ promote the in vivo tumorigenesis of DU145 through up-regulating C-Kit; in contrast, the stromal cells in the TZ inhibit it through down-regulating the expression of C-Kit. The model will be useful for understanding the mechanisms by which the prostatic stem cell niche controls the tumorigeneis of prostatic cancer stem cells.
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Affiliation(s)
- Yubing Peng
- 1. Department of Urology, Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Qi Chen
- 1. Department of Urology, Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Meng Gu
- 1. Department of Urology, Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Yanbo Chen
- 1. Department of Urology, Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Ming Zhang
- 1. Department of Urology, Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Juan Zhou
- 1. Department of Urology, Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Hao Wang
- 1. Department of Urology, Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Yan Gao
- 2. Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Wenji Li
- 1. Department of Urology, Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Zhong Wang
- 1. Department of Urology, Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Zhikang Cai
- 1. Department of Urology, Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
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Özdemir BC, Hensel J, Secondini C, Wetterwald A, Schwaninger R, Fleischmann A, Raffelsberger W, Poch O, Delorenzi M, Temanni R, Mills IG, van der Pluijm G, Thalmann GN, Cecchini MG. The molecular signature of the stroma response in prostate cancer-induced osteoblastic bone metastasis highlights expansion of hematopoietic and prostate epithelial stem cell niches. PLoS One 2014; 9:e114530. [PMID: 25485970 PMCID: PMC4259356 DOI: 10.1371/journal.pone.0114530] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 11/10/2014] [Indexed: 01/18/2023] Open
Abstract
The reciprocal interaction between cancer cells and the tissue-specific stroma is critical for primary and metastatic tumor growth progression. Prostate cancer cells colonize preferentially bone (osteotropism), where they alter the physiological balance between osteoblast-mediated bone formation and osteoclast-mediated bone resorption, and elicit prevalently an osteoblastic response (osteoinduction). The molecular cues provided by osteoblasts for the survival and growth of bone metastatic prostate cancer cells are largely unknown. We exploited the sufficient divergence between human and mouse RNA sequences together with redefinition of highly species-specific gene arrays by computer-aided and experimental exclusion of cross-hybridizing oligonucleotide probes. This strategy allowed the dissection of the stroma (mouse) from the cancer cell (human) transcriptome in bone metastasis xenograft models of human osteoinductive prostate cancer cells (VCaP and C4-2B). As a result, we generated the osteoblastic bone metastasis-associated stroma transcriptome (OB-BMST). Subtraction of genes shared by inflammation, wound healing and desmoplastic responses, and by the tissue type-independent stroma responses to a variety of non-osteotropic and osteotropic primary cancers generated a curated gene signature ("Core" OB-BMST) putatively representing the bone marrow/bone-specific stroma response to prostate cancer-induced, osteoblastic bone metastasis. The expression pattern of three representative Core OB-BMST genes (PTN, EPHA3 and FSCN1) seems to confirm the bone specificity of this response. A robust induction of genes involved in osteogenesis and angiogenesis dominates both the OB-BMST and Core OB-BMST. This translates in an amplification of hematopoietic and, remarkably, prostate epithelial stem cell niche components that may function as a self-reinforcing bone metastatic niche providing a growth support specific for osteoinductive prostate cancer cells. The induction of this combinatorial stem cell niche is a novel mechanism that may also explain cancer cell osteotropism and local interference with hematopoiesis (myelophthisis). Accordingly, these stem cell niche components may represent innovative therapeutic targets and/or serum biomarkers in osteoblastic bone metastasis.
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Affiliation(s)
- Berna C. Özdemir
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Janine Hensel
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Chiara Secondini
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Antoinette Wetterwald
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Ruth Schwaninger
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | | | | | - Olivier Poch
- ICube UMR7357, University of Strasbourg, Strasbourg, France
| | - Mauro Delorenzi
- Ludwig Center for Cancer Research, Department of Oncology, University of Lausanne and Swiss Institute of Bioinformatics (SIB), Lausanne, Switzerland
| | - Ramzi Temanni
- Biomedical Informatics Division, Sidra Medical and Research Center, Doha, Qatar
| | - Ian G. Mills
- Prostate Cancer Research Group, Norway Centre for Molecular Medicine (NCMM), University of Oslo, Oslo, Norway
| | - Gabri van der Pluijm
- Department of Urology, Leiden University Medical Centre (LUMC), Leiden, The Netherlands
| | - George N. Thalmann
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Marco G. Cecchini
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
- * E-mail:
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9
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Kwon OJ, Xin L. Prostate epithelial stem and progenitor cells. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL UROLOGY 2014; 2:209-218. [PMID: 25374923 PMCID: PMC4219311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 08/30/2014] [Indexed: 06/04/2023]
Abstract
The classic androgen ablation and replacement experiment demonstrates that prostate epithelia possess extensive regenerative capacities and implies the existence of the prostate stem/progenitor cells. These cells may serve as the cells of origin for prostate cancer and their intrinsic property may dictate the clinical behaviors of the resulting diseases. Therefore, detailed characterization of these cells will potentially benefit disease prevention, diagnosis and prognosis. In this review, we describe several major in vitro and in vivo approaches that have been employed in the studies of the prostate stem cell activities, summarize the major progress that has been made during the last two decades regarding the identity of prostate stem/progenitor cells and their niches, and discuss some remaining outstanding questions in the field.
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Affiliation(s)
- Oh-Joon Kwon
- Department of Molecular and Cellular Biology, Baylor College of MedicineUSA
| | - Li Xin
- Department of Molecular and Cellular Biology, Baylor College of MedicineUSA
- Department of Pathology and Immunology, Baylor College of MedicineUSA
- Dan L. Duncan Cancer Center, Baylor College of MedicineUSA
- Baylor College of MedicineOne Baylor Plaza, Houston, TX 77030, USA
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10
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Powers GL, Marker PC. Recent advances in prostate development and links to prostatic diseases. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2013; 5:243-56. [PMID: 23335485 DOI: 10.1002/wsbm.1208] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The prostate is a branched ductal-acinar gland that is part of the male reproductive tract. Prostate development depends upon the integration of steroid hormone signals, paracrine interactions between the stromal and epithelial tissue layers, and the actions of cell autonomous factors. Several genes and signaling pathways are known to be required for one or more steps of prostate development including epithelial budding, duct elongation, branching morphogenesis, and/or cellular differentiation. Recent progress in the field of prostate development has included the application of genome-wide technologies including serial analysis of gene expression, expression profiling microarrays, and other large-scale approaches to identify new genes and pathways that are essential for prostate development. The aggregation of experimental results into online databases by organized multilab projects including the Genitourinary Developmental Molecular Atlas Project has also accelerated the understanding of molecular pathways that function during prostate development and identified links between prostate anatomy and molecular signaling. Rapid progress has also recently been made in understanding the nature and role of candidate stem cells in the developing and adult prostate. This has included the identification of putative prostate stem cell markers, lineage tracing, and organ reconstitution studies. However, several issues regarding their origin, precise nature, and possible role(s) in disease remain unresolved. Nevertheless, several links between prostatic developmental mechanisms and the pathogenesis of prostatic diseases including benign prostatic hyperplasia and prostate cancer have led to recent progress on targeting developmental pathways as therapeutic strategies for these diseases.
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Affiliation(s)
- Ginny L Powers
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin-Madison, Madison, WI, USA
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Huang Z, Hurley PJ, Simons BW, Marchionni L, Berman DM, Ross AE, Schaeffer EM. Sox9 is required for prostate development and prostate cancer initiation. Oncotarget 2013; 3:651-63. [PMID: 22761195 PMCID: PMC3442290 DOI: 10.18632/oncotarget.531] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Prostate cancer is one of the most common malignancies and the second leading cause of death from cancer in men. The molecular mechanisms driving prostate carcinogenesis are complex; with several lines of evidence suggesting that the re-expression of conserved developmental programs plays a key role. In this study, we used conditional gene targeting and organ grafting, to describe conserved roles for the transcription factor Sox9 in the initiation of both prostate organogenesis and prostate carcinogenesis in murine models. Abrogation of Sox9 expression prior to the initiation of androgen signaling blocks the initiation of prostate development. Similarly, Sox9 deletion in two genetic models of prostate cancer (TRAMP and Hi-Myc) prevented cancer initiation. Expression profiling of Sox9-null prostate epithelial cells revealed that the role of Sox9 in the initiation of prostate development may relate to its regulation of multiple cytokeratins and cell adherence/polarity. Due to its essential role in cancer initiation, manipulation of Sox9 targets in at-risk men may prove useful in the chemoprevention of prostate cancer.
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Affiliation(s)
- Zhenhua Huang
- Department of Urology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
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12
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Simons BW, Hurley PJ, Huang Z, Ross AE, Miller R, Marchionni L, Berman DM, Schaeffer EM. Wnt signaling though beta-catenin is required for prostate lineage specification. Dev Biol 2012; 371:246-55. [PMID: 22960283 DOI: 10.1016/j.ydbio.2012.08.016] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 07/30/2012] [Accepted: 08/21/2012] [Indexed: 02/05/2023]
Abstract
Androgens initiate a complex network of signals within the UGS that trigger prostate lineage commitment and bud formation. Given its contributions to organogenesis in other systems, we investigated a role for canonical Wnt signaling in prostate development. We developed a new method to achieve complete deletion of beta-catenin, the transcriptional coactivator required for canonical Wnt signaling, in early prostate development. Beta-catenin deletion abrogated canonical Wnt signaling and yielded prostate rudiments that exhibited dramatically decreased budding and failed to adopt prostatic identity. This requirement for canonical Wnt signaling was limited to a brief critical period during the initial molecular phase of prostate identity specification. Deletion of beta-catenin in the adult prostate did not significantly affect organ homeostasis. Collectively, these data establish that beta-catenin and Wnt signaling play key roles in prostate lineage specification and bud outgrowth.
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Affiliation(s)
- Brian W Simons
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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13
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Tu SM, Lin SH. Prostate cancer stem cells. Clin Genitourin Cancer 2012; 10:69-76. [PMID: 22421313 DOI: 10.1016/j.clgc.2012.01.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 12/27/2011] [Accepted: 01/19/2012] [Indexed: 02/07/2023]
Abstract
Stem cells have long been implicated in prostate gland formation. The prostate undergoes regression after androgen deprivation and regeneration after testosterone replacement. Regenerative studies suggest that these cells are found in the proximal ducts and basal layer of the prostate. Many characteristics of prostate cancer indicate that it originates from stem cells. For example, the putative androgen receptor-negative (AR(-)) status of prostate stem cells renders them inherently insensitive to androgen blockade therapy. The androgen-regulated gene fusion TMPRSS2-ERG could be used to clarify both the cells of origin and the evolution of prostate cancer cells. In this review, we show that the hypothesis that distinct subtypes of cancer result from abnormalities within specific cell types-the stem cell theory of cancer-may instigate a major paradigm shift in cancer research and therapy. Ultimately, the stem cell theory of cancers will affect how we practice clinical oncology: our diagnosis, monitoring, and therapy of prostate and other cancers.
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Affiliation(s)
- Shi-Ming Tu
- Department of Genitourinary Medical Oncology, The University of Texas, MD, Anderson Cancer Center, Houston, TX 77030-3721, USA.
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14
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Mehta V, Abler LL, Keil KP, Schmitz CT, Joshi PS, Vezina CM. Atlas of Wnt and R-spondin gene expression in the developing male mouse lower urogenital tract. Dev Dyn 2011; 240:2548-60. [PMID: 21936019 DOI: 10.1002/dvdy.22741] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2011] [Indexed: 12/24/2022] Open
Abstract
Prostate development is influenced by β-catenin signaling, but it is unclear which β-catenin activators are involved, where they are synthesized, and whether their mRNA abundance is influenced by androgens. We identified WNT/β-catenin-responsive β-galactosidase activity in the lower urogenital tract (LUT) of transgenic reporter mice, but β-galactosidase activity differed among the four mouse strains we examined. We used in situ hybridization to compare patterns of Wnts, r-spondins (Rspos, co-activators of β-catenin signaling), β-catenin-responsive mRNAs, and an androgen receptor-responsive mRNA in wild type fetal male, fetal female, and neonatal male LUT. Most Wnt and Rspo mRNAs were present in LUT during prostate development. Sexually dimorphic expression patterns were observed for WNT/β-catenin-responsive genes, and for Wnt2b, Wnt4, Wnt7a, Wnt9b, Wnt10b, Wnt11, Wnt16, and Rspo3 mRNAs. These results reveal sexual differences in WNT/β-catenin signaling in fetal LUT, supporting the idea that this pathway may be directly or indirectly responsive to androgens during prostate ductal development.
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Affiliation(s)
- Vatsal Mehta
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin, USA
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15
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Abler LL, Keil KP, Mehta V, Joshi PS, Schmitz CT, Vezina CM. A high-resolution molecular atlas of the fetal mouse lower urogenital tract. Dev Dyn 2011; 240:2364-77. [PMID: 21905163 DOI: 10.1002/dvdy.22730] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2011] [Indexed: 12/15/2022] Open
Abstract
Epithelial-stromal interactions in the lower urogenital tract (LUT) are integral to prostatic and seminal vesicle development in males, vaginal and uterine development in females, and urethral development in both sexes. Gene expression profiling of isolated LUT stroma and epithelium has unraveled mechanisms of LUT development, but such studies are confounded by heterogeneous and ill-defined cell sub-populations contained within each tissue compartment. We used in situ hybridization to synthesize a high-resolution molecular atlas of 17-day post-coitus fetal mouse LUT. We identified mRNAs that mark selective cell populations of the seminal vesicle, ejaculatory duct, prostate, urethra, and vagina, subdividing these tissues into 16 stromal and 8 epithelial sub-compartments. These results provide a powerful tool for mapping LUT gene expression patterns and also reveal previously uncharacterized sub-compartments that may play mechanistic roles in LUT development of which we were previously unaware.
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Affiliation(s)
- Lisa L Abler
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin, Madison Wisconsin, USA
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16
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Gaisa NT, Graham TA, McDonald SA, Poulsom R, Heidenreich A, Jakse G, Knuechel R, Wright NA. Clonal architecture of human prostatic epithelium in benign and malignant conditions. J Pathol 2011; 225:172-80. [PMID: 21898875 DOI: 10.1002/path.2959] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 06/24/2011] [Accepted: 06/27/2011] [Indexed: 12/25/2022]
Abstract
The location of stem cells in the epithelium of the prostatic acinus remains uncertain, as does the cellular origin of prostatic neoplasia. Here, we apply lineage tracing to visualize the clonal progeny of stem cells in benign and malignant human prostates and understand the clonal architecture of this epithelium. Cells deficient for the mitochondrially-encoded enzyme cytochrome c oxidase (CCO) were identified in 27 frozen prostatectomy specimens using dual colour enzyme histochemistry and individual CCO-normal and -deficient cell areas were laser-capture microdissected. PCR-sequencing of the entire mitochondrial genome (mtDNA) of cells from CCO-deficient areas found to share mtDNA mutations not present in adjacent CCO-normal cells, thus proving a clonal origin. Immunohistochemistry was performed to visualize the three cell lineages normally present in the prostatic epithelium. Entire CCO-deficient acini, and part-deficient acini were found. Deficient patches spanned either basal or luminal cells, but sometimes also both epithelial cell types in normal, hyperplastic or atrophic epithelium, and prostatic intraepithelial neoplasia (PIN). Patches comprising both PIN and invasive cancer were observed. Each cell area within a CCO-deficient patch contained an identical mtDNA mutation, defining the patch as a clonal unit. CCO-deficient patches in benign epithelium contained basal, luminal and endocrine cells, demonstrating multilineage differentiation and therefore the presence of a stem cell. Our results demonstrate that the normal, atrophic, hypertrophic and atypical (PIN) epithelium of human prostate contains stem cell-derived clonal units that actively replenish the epithelium during ageing. These deficient areas usually included the basal compartment indicating the basal layer as the location of the stem cell. Importantly, single clonal units comprised both PIN and invasive cancer, supporting PIN as the pre-invasive lesion for prostate cancer.
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Affiliation(s)
- Nadine T Gaisa
- Institute of Pathology, RWTH, Aachen University, Aachen, Germany.
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17
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Matuszak EA, Kyprianou N. Androgen regulation of epithelial-mesenchymal transition in prostate tumorigenesis. Expert Rev Endocrinol Metab 2011; 6:469-482. [PMID: 23667383 PMCID: PMC3648215 DOI: 10.1586/eem.11.32] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Prostate cancer patient mortality is ascribed to the spread of cancerous cells to areas outside the prostate gland and the inability of current treatment strategies to effectively block progression to metastasis. Understanding the cellular mechanisms contributing to the dissemination of malignant cells and metastasis is critically significant to the generation of effective therapeutic modalities for improved patient survival while combating therapeutic resistance. In recent years, the phenomenon of epithelial-mesenchymal transitions (EMTs) has received considerable attention due to accumulating evidence indicating a role for this developmentally conserved process in tumorigenesis. Cancer cells at the invasive edges of tumors undergo EMT under the influence of contextual signals that they receive from the microenvironment, such as TGF-β. Also derived from developmental studies is the fact that EMT induction is reversible; thus, upon removal of EMT-inducing signals, cells occasionally revert to the epithelial state of their cellular ancestors via the process of mesenchymal-epithelial transition. This article discusses the current evidence supporting a central role for EMT and its reverse process, mesenchymal-epithelial transition, in the metastatic progression of prostate cancer to advanced disease and the involvement of androgen signaling in its regulation towards the development of castration-resistant prostate cancer.
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Affiliation(s)
- Emily A Matuszak
- Department of Toxicology, University of Kentucky College of Medicine, Lexington, KY 40536, USA
- Department of Surgery/Urology, University of Kentucky College of Medicine, KY, USA
| | - Natasha Kyprianou
- Department of Toxicology, University of Kentucky College of Medicine, Lexington, KY 40536, USA
- Department of Surgery/Urology, University of Kentucky College of Medicine, KY, USA
- Department of Pathology, University of Kentucky College of Medicine, Lexington, KY, USA
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY, USA
- Markey Cancer Center, University of Kentucky College of Medicine, Lexington, KY, USA
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