1
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Xu Y, Mu J, Zhou Z, Leng Y, Yu Y, Song X, Liu A, Zhu H, Li J, Wang D. Expansion of mouse castration-resistant intermediate prostate stem cells in vitro. Stem Cell Res Ther 2022; 13:299. [PMID: 35841025 PMCID: PMC9284701 DOI: 10.1186/s13287-022-02978-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 06/06/2022] [Indexed: 11/10/2022] Open
Abstract
Background Most castration-resistant prostate cancers (CRPCs) have a luminal phenotype with high androgen receptor (AR) and prostate-specific antigen (PSA) expression. Currently, it is difficult to culture castration-resistant luminal cells with AR and PSA expression. Methods We formulated a custom-made medium and isolated primary cells from the prostate of adult wild-type (WT) and TRAMP mice. The cells were characterized by immunofluorescence staining, transcriptomic analysis, and qRT-PCR verification. Their self-renewal and differentiation potential in vitro and in vivo were examined. We treated the cells with androgen deprivation and enzalutamide and performed immunofluorescence staining and western blotting to analyze their expression of AR and PSA. Results We isolated a novel type of castration-resistant intermediate prostate stem cells (CRIPSCs) from adult WT and TRAMP mice. The mouse CRIPSCs proliferated rapidly in two-dimensional (2D) culture dishes and can be cultured for more than six months. The mouse CRIPSCs expressed luminal markers (AR, PSA, and Dsg4), basal markers (CK5 and p63), Psca, and the intermediate cell marker (Ivl). Transcriptomic analysis showed that the mouse CRIPSCs had upregulated signaling pathways related to cancer development and drug resistance. In the long-term culture, TRAMP CRIPSCs had higher expression of the genes related to stem cells and cancers than WT mice. Both WT and TRAMP CRIPSCs formed organoids in Matrigel. WT CRIPSCs did not form prostate tissues when transplanted in vivo without urogenital sinus mesenchyme (UGM) cells. In contrast, TRAMP CRIPSCs formed prostate ducts in NOG mice without UGM cells and differentiated into luminal, basal, and neuroendocrine cells. Androgens regulated AR translocation between the nucleus and cytoplasm in the mouse CRIPSCs. Treatment of androgen deprivation (ADT) and enzalutamide reduced AR expression in WT and TRAMP CRIPSCs; however, this treatment promoted PSA expression in TRAMP, while not WT CRIPSCs, similar to the clinical observations of CRPC. Conclusions Our study established a method for isolating and expanding mouse CRIPSCs in 2D culture dishes. Mouse CRIPSCs had markers of basal and luminal cells, including AR and PSA, and can differentiate into prostate organoids and tissues. TRAMP CRIPSCs had elevated PSA expression upon ADT and enzalutamide treatment. Our method can be translated into clinical settings for CRPC precision medicine.
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Affiliation(s)
- Yalan Xu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Medical College, Qingdao University, Qingdao, 266021, China.,School of Basic Medicine, Qingdao University, Qingdao, 266021, China
| | - Jie Mu
- College of Life Sciences, and School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Zhixia Zhou
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Medical College, Qingdao University, Qingdao, 266021, China
| | - Yu Leng
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Medical College, Qingdao University, Qingdao, 266021, China.,School of Basic Medicine, Qingdao University, Qingdao, 266021, China
| | - Yali Yu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Medical College, Qingdao University, Qingdao, 266021, China.,School of Basic Medicine, Qingdao University, Qingdao, 266021, China
| | - Xiuyue Song
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Medical College, Qingdao University, Qingdao, 266021, China.,School of Basic Medicine, Qingdao University, Qingdao, 266021, China
| | - Aihua Liu
- College of Life Sciences, and School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Hai Zhu
- Department of Urology, Qingdao Municipal Hospital Affiliated to Qingdao University, Qingdao, 266011, China.
| | - Jing Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Medical College, Qingdao University, Qingdao, 266021, China.
| | - Dong Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Medical College, Qingdao University, Qingdao, 266021, China.
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2
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Li Y, Ge C, Franceschi RT. Role of Runx2 in prostate development and stem cell function. Prostate 2021; 81:231-241. [PMID: 33411419 PMCID: PMC7856111 DOI: 10.1002/pros.24099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 12/18/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND RUNX2, a critical transcription factor in bone development, is also expressed in prostate and breast where it has been linked to cancer progression and cancer stem cells. However, its role in normal prostate biology has not been previously examined. METHODS Selective growth of murine prostate epithelium under non-adherent conditions was used to enrich for stem cells. Expression of runt domain transcription factors, stem cell and prostate marker messenger RNAs (mRNAs) was determined by quantitative reverse transcription polymerase chain reaction. Effects of Runx2 loss and gain-of-function on prostate epithelial cells were assessed using cells isolated from Runx2loxp/loxp mice transduced with Adeno-Cre or by Adeno-Runx2 transduction of wild type cells. Cellular distribution of RUNX2 and prostate-associated proteins was assessed using immunofluorescence microscopy. In vivo Runx2 knock out was achieved by tamoxifen treatment of Nkx3.1CreERT; Runx2loxp/loxp mice. RESULTS Prostate epithelium-derived spheroids, which are enriched in stem cells, were shown to contain elevated levels of Runx2 mRNA. Spheroid formation required Runx2 since adenovirus-Cre mediated knockout of Runx2 in prostatic epithelial cells from Runx2loxp/loxp mice severely reduced spheroid formation and stem cell markers while Runx2 overexpression was stimulatory. In vivo, Runx2 was detected during early prostate development (E16.5) and in adult mice where it was present in basal and luminal cells of ventral and anterior lobes. Prostate-selective deletion of Runx2 in tamoxifen-treated Nkx3.1CreERT; Runx2loxp/loxp mice severely inhibited growth and maturation of tubules in the anterior prostate and reduced expression of stem cell markers and prostate-associated genes. CONCLUSION This study demonstrates an important role for Runx2 in prostate development that may be explained by actions in prostate epithelial stem cells.
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Affiliation(s)
- Yan Li
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
| | - Chunxi Ge
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
| | - Renny T. Franceschi
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
- Department of Biological Chemistry, University of Michigan School of Medicine, Ann Arbor, MI
- Department of Biomedical Engineering, University of Michigan School of Engineering, Ann Arbor, MI
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3
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Abstract
Therapy resistance is a significant challenge for prostate cancer treatment in clinic. Although targeted therapies such as androgen deprivation and androgen receptor (AR) inhibition are effective initially, tumor cells eventually evade these strategies through multiple mechanisms. Lineage reprogramming in response to hormone therapy represents a key mechanism that is increasingly observed. The studies in this area have revealed specific combinations of alterations present in adenocarcinomas that provide cells with the ability to transdifferentiate and perpetuate AR-independent tumor growth after androgen-based therapies. Interestingly, several master regulators have been identified that drive plasticity, some of which also play key roles during development and differentiation of the cell lineages in the normal prostate. Thus, further study of each AR-independent tumor type and understanding underlying mechanisms are warranted to develop combinational therapies that combat lineage plasticity in prostate cancer.
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Affiliation(s)
- Alexandra M Blee
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.,Biochemistry and Molecular Biology Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
| | - Haojie Huang
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.,Department of Urology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.,Mayo Clinic Cancer Center, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
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4
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Hepburn AC, Curry EL, Moad M, Steele RE, Franco OE, Wilson L, Singh P, Buskin A, Crawford SE, Gaughan L, Mills IG, Hayward SW, Robson CN, Heer R. Propagation of human prostate tissue from induced pluripotent stem cells. Stem Cells Transl Med 2020; 9:734-745. [PMID: 32170918 PMCID: PMC7308643 DOI: 10.1002/sctm.19-0286] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 01/10/2020] [Accepted: 01/29/2020] [Indexed: 02/06/2023] Open
Abstract
Primary culture of human prostate organoids and patient‐derived xenografts is inefficient and has limited access to clinical tissues. This hampers their use for translational study to identify new treatments. To overcome this, we established a complementary approach where rapidly proliferating and easily handled induced pluripotent stem cells enabled the generation of human prostate tissue in vivo and in vitro. By using a coculture technique with inductive urogenital sinus mesenchyme, we comprehensively recapitulated in situ 3D prostate histology, and overcame limitations in the primary culture of human prostate stem, luminal and neuroendocrine cells, as well as the stromal microenvironment. This model now unlocks new opportunities to undertake translational studies of benign and malignant prostate disease.
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Affiliation(s)
- Anastasia C Hepburn
- Translational and Clinical Research Institute, Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK
| | - Emma L Curry
- Translational and Clinical Research Institute, Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK
| | - Mohammad Moad
- Translational and Clinical Research Institute, Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK.,Acute Internal Medicine, University Hospital of North Tees, Stockton on Tees, UK
| | - Rebecca E Steele
- Prostate Cancer UK/Movember Centre of Excellence for Prostate Cancer, Centre for Cancer Research and Cell Biology, Queen's University of Belfast, Belfast, UK
| | - Omar E Franco
- Department of Surgery, NorthShore University HealthSystem, Evanston, Illinois, USA
| | - Laura Wilson
- Translational and Clinical Research Institute, Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK
| | - Parmveer Singh
- Translational and Clinical Research Institute, Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK
| | - Adriana Buskin
- Translational and Clinical Research Institute, Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK
| | - Susan E Crawford
- Department of Surgery, NorthShore University HealthSystem, Evanston, Illinois, USA
| | - Luke Gaughan
- Translational and Clinical Research Institute, Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK
| | - Ian G Mills
- Prostate Cancer UK/Movember Centre of Excellence for Prostate Cancer, Centre for Cancer Research and Cell Biology, Queen's University of Belfast, Belfast, UK.,Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Simon W Hayward
- Department of Surgery, NorthShore University HealthSystem, Evanston, Illinois, USA
| | - Craig N Robson
- Translational and Clinical Research Institute, Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK
| | - Rakesh Heer
- Translational and Clinical Research Institute, Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK.,Department of Urology, Freeman Hospital, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
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5
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Henry GH, Malewska A, Joseph DB, Malladi VS, Lee J, Torrealba J, Mauck RJ, Gahan JC, Raj GV, Roehrborn CG, Hon GC, MacConmara MP, Reese JC, Hutchinson RC, Vezina CM, Strand DW. A Cellular Anatomy of the Normal Adult Human Prostate and Prostatic Urethra. Cell Rep 2019; 25:3530-3542.e5. [PMID: 30566875 PMCID: PMC6411034 DOI: 10.1016/j.celrep.2018.11.086] [Citation(s) in RCA: 172] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 10/17/2018] [Accepted: 11/20/2018] [Indexed: 11/30/2022] Open
Abstract
A comprehensive cellular anatomy of normal human prostate is essential for solving the cellular origins of benign prostatic hyperplasia and prostate cancer. The tools used to analyze the contribution of individual cell types are not robust. We provide a cellular atlas of the young adult human prostate and prostatic urethra using an iterative process of single-cell RNA sequencing (scRNA-seq) and flow cytometry on ~98,000 cells taken from different anatomical regions. Immunohistochemistry with newly derived cell type-specific markers revealed the distribution of each epithelial and stromal cell type on whole mounts, revising our understanding of zonal anatomy. Based on discovered cell surface markers, flow cytometry antibody panels were designed to improve the purification of each cell type, with each gate confirmed by scRNA-seq. The molecular classification, anatomical distribution, and purification tools for each cell type in the human prostate create a powerful resource for experimental design in human prostate disease. Using single-cell RNA sequencing, immunofluorescence, and flow cytometry, Henry et al. create a cellular anatomy of the normal human prostate and provide the tools to identify, isolate, and localize every cell type. They identify two additional epithelial cell types enriched in the prostatic urethra and proximal prostatic ducts.
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Affiliation(s)
- Gervaise H Henry
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Alicia Malewska
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Diya B Joseph
- Department of Comparative Biosciences, University of Wisconsin School of Veterinary Medicine, Madison, WI 53706, USA
| | - Venkat S Malladi
- Department of Bioinformatics, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jeon Lee
- Department of Bioinformatics, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jose Torrealba
- Department of Pathology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Ryan J Mauck
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jeffrey C Gahan
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Ganesh V Raj
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Claus G Roehrborn
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Gary C Hon
- Cecil H. and Ida Green Center for Reproductive Biology Sciences, Department of Obstetrics and Gynecology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | | | | | - Ryan C Hutchinson
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Chad M Vezina
- Department of Comparative Biosciences, University of Wisconsin School of Veterinary Medicine, Madison, WI 53706, USA
| | - Douglas W Strand
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA.
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6
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Jiang L, Ivich F, Tahsin S, Tran M, Frank SB, Miranti CK, Zohar Y. Human stroma and epithelium co-culture in a microfluidic model of a human prostate gland. BIOMICROFLUIDICS 2019; 13:064116. [PMID: 31768202 PMCID: PMC6867939 DOI: 10.1063/1.5126714] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 11/11/2019] [Indexed: 05/10/2023]
Abstract
The prostate is a walnut-sized gland that surrounds the urethra of males at the base of the bladder comprising a muscular portion, which controls the release of urine, and a glandular portion, which secretes fluids that nourish and protect sperms. Here, we report the development of a microfluidic-based model of a human prostate gland. The polydimethylsiloxane (PDMS) microfluidic device, consisting of two stacked microchannels separated by a polyester porous membrane, enables long-term in vitro cocultivation of human epithelial and stromal cells. The porous separation membrane provides an anchoring scaffold for long-term culturing of the two cell types on its opposite surfaces allowing paracrine signaling but not cell crossing between the two channels. The microfluidic device is transparent enabling high resolution bright-field and fluorescence imaging. Within this coculture model of a human epithelium/stroma interface, we simulated the functional development of the in vivo human prostate gland. We observed the successful differentiation of basal epithelial cells into luminal secretory cells determined biochemically by immunostaining with known differentiation biomarkers, particularly androgen receptor expression. We also observed morphological changes where glandlike mounds appeared with relatively empty centers reminiscent of prostatic glandular acini structures. This prostate-on-a-chip will facilitate the direct evaluation of paracrine and endocrine cross talk between these two cell types as well as studies associated with normal vs disease-related events such as prostate cancer.
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Affiliation(s)
- L. Jiang
- Department of Aerospace & Mechanical Engineering, University of Arizona, Tucson, Arizona 85721, USA
- Author to whom correspondence should be addressed:
| | - F. Ivich
- Department of Biomedical Engineering, University of Arizona, Tucson, Arizona 85721, USA
| | | | - M. Tran
- Department of Biomedical Engineering, University of Arizona, Tucson, Arizona 85721, USA
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7
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A human-derived prostate co-culture microtissue model using epithelial (RWPE-1) and stromal (WPMY-1) cell lines. Toxicol In Vitro 2019; 60:203-211. [PMID: 31154061 DOI: 10.1016/j.tiv.2019.05.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/29/2019] [Indexed: 01/08/2023]
Abstract
The development and normal function of prostate tissue depends on signalling interactions between stromal and epithelial compartments. Development of a prostate microtissue composed of these two components can help identify substance exposures that could cause adverse effects in humans as part of a non-animal risk assessment. In this study, prostate microtissues composed of human derived stromal (WPMY-1) and epithelial (RWPE-1) cell lines grown in scaffold-free hydrogels were developed and characterized using immunohistochemistry, light microscopy, and qRT-PCR. Within 5 days after seeding, the microtissues self-organized into spheroids consisting of a core of stromal WPMY-1 cells surrounded by epithelial RWPE-1 cells. The RWPE-1 layer is reflective of intermediate prostatic epithelium, expressing both characteristics of the luminal (high expression of PSA) and basal (high expression of cytokeratins 5/6 and 14) epithelial cells. The response of the microtissues to an androgen (dihydrotestosterone, DHT) and an anti-androgen (flutamide) was also investigated. Treatment with DHT, flutamide or a mixture of DHT and flutamide indicated that the morphology and self-organization of the microtissues is androgen dependent. qRT-PCR data showed that a saturating concentration of DHT increased the expression of genes coding for the estrogen receptors (ESR1 and ESR2) and decreased the expression of CYP1B1 without affecting the expression of the androgen receptor. With further development and optimization RWPE-1/WPMY-1 microtissues can play an important role in non-animal risk assessments.
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8
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Abstract
Comprehensive knowledge of the normal prostate epithelial lineage hierarchy is a prerequisite to investigate the identity of the cells of origin for prostate cancer. The basal and luminal cells constitute most of the prostate epithelium and have been the major focuses of the study on the cells of origin for prostate cancer. Much progress has been made during the past few decades, mainly using mouse models, to understand the inter-lineage relationship and intra-lineage heterogeneity in adults as well as the lineage plasticity during conditions of stress. These studies have concluded that the adult mouse prostate basal and luminal cells are largely independently sustained under physiological conditions, but both types of cells possess the capacity for bipotent differentiation under stress or artificial experimental conditions. However, the existence or the identity of the putative progenitors within each lineage warrants further investigation. Whether the human prostate lineage hierarchy is completely the same as that of the mouse remains uncertain. Experiments from independent groups have demonstrated that both types of cells in mice and humans can serve as targets for transformation. But controversies remain whether the disease from distinct cells of origin display different clinical behaviors. Further investigation of the intra-lineage heterogeneity will provide new insights into this issue. Understanding the identity of the cells of origin for prostate cancer will help identify novel prognostic markers for early detection of aggressive prostate cancers, provide insights into the therapeutic vulnerability of these tumors, and inspire novel therapeutic strategies.
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9
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Toivanen R, Shen MM. Prostate organogenesis: tissue induction, hormonal regulation and cell type specification. Development 2017; 144:1382-1398. [PMID: 28400434 DOI: 10.1242/dev.148270] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Prostate organogenesis is a complex process that is primarily mediated by the presence of androgens and subsequent mesenchyme-epithelial interactions. The investigation of prostate development is partly driven by its potential relevance to prostate cancer, in particular the apparent re-awakening of key developmental programs that occur during tumorigenesis. However, our current knowledge of the mechanisms that drive prostate organogenesis is far from complete. Here, we provide a comprehensive overview of prostate development, focusing on recent findings regarding sexual dimorphism, bud induction, branching morphogenesis and cellular differentiation.
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Affiliation(s)
- Roxanne Toivanen
- Departments of Medicine, Genetics and Development, Urology, and Systems Biology, Herbert Irving Comprehensive Cancer Center, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA
| | - Michael M Shen
- Departments of Medicine, Genetics and Development, Urology, and Systems Biology, Herbert Irving Comprehensive Cancer Center, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA
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10
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Toivanen R, Mohan A, Shen MM. Basal Progenitors Contribute to Repair of the Prostate Epithelium Following Induced Luminal Anoikis. Stem Cell Reports 2016; 6:660-667. [PMID: 27117783 PMCID: PMC4939748 DOI: 10.1016/j.stemcr.2016.03.007] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 03/21/2016] [Accepted: 03/22/2016] [Indexed: 11/04/2022] Open
Abstract
Contact with the extracellular matrix is essential for maintenance of epithelial cells in many tissues, while in its absence epithelial cells can detach and undergo anoikis. Here, we show that anoikis of luminal cells in the prostate epithelium is followed by a program of tissue repair that is mediated in part by differentiation of basal epithelial cells to luminal cells. We describe a mouse model in which inducible deletion of E-cadherin in prostate luminal cells results in their apoptotic cell death by anoikis, in the absence of phenotypic effects in the surrounding stroma. Quantitative assessments of proliferation and cell death in the luminal and basal compartments indicate that basal cells can rapidly generate luminal cells. Thus, our findings identify a role for basal-to-luminal differentiation in prostate epithelial repair, and provide a normal context to analogous processes that may occur during prostate cancer initiation. Induced deletion of E-cadherin results in anoikis of prostate luminal cells Luminal anoikis and tissue repair take place in the absence of stromal phenotypes Basal cells proliferate and differentiate to produce luminal cells during repair These findings suggest a conserved role for basal cells in epithelial tissue repair
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Affiliation(s)
- Roxanne Toivanen
- Departments of Medicine, Genetics & Development, Urology, and Systems Biology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Adithi Mohan
- Departments of Medicine, Genetics & Development, Urology, and Systems Biology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Michael M Shen
- Departments of Medicine, Genetics & Development, Urology, and Systems Biology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA.
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11
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Rybak AP, Bristow RG, Kapoor A. Prostate cancer stem cells: deciphering the origins and pathways involved in prostate tumorigenesis and aggression. Oncotarget 2015; 6:1900-19. [PMID: 25595909 PMCID: PMC4385825 DOI: 10.18632/oncotarget.2953] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Accepted: 12/09/2015] [Indexed: 12/18/2022] Open
Abstract
The cells of the prostate gland are dependent on cell signaling pathways to regulate their growth, maintenance and function. However, perturbations in key signaling pathways, resulting in neoplastic transformation of cells in the prostate epithelium, are likely to generate subtypes of prostate cancer which may subsequently require different treatment regimes. Accumulating evidence supports multiple sources of stem cells in the prostate epithelium with distinct cellular origins for prostate tumorigenesis documented in animal models, while human prostate cancer stem-like cells (PCSCs) are typically enriched by cell culture, surface marker expression and functional activity assays. As future therapies will require a deeper understanding of its cellular origins as well as the pathways that drive PCSC maintenance and tumorigenesis, we review the molecular and functional evidence supporting dysregulation of PI3K/AKT, RAS/MAPK and STAT3 signaling in PCSCs, the development of castration resistance, and as a novel treatment approach for individual men with prostate cancer.
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Affiliation(s)
- Adrian P Rybak
- McMaster Institute of Urology, Division of Urology, Department of Surgery, McMaster University, ON, Canada.,St. Joseph's Hospital, Hamilton, ON, Canada
| | - Robert G Bristow
- Princess Margaret Cancer Centre (University Health Network), ON, Canada.,Departments of Radiation Oncology and Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Anil Kapoor
- McMaster Institute of Urology, Division of Urology, Department of Surgery, McMaster University, ON, Canada.,St. Joseph's Hospital, Hamilton, ON, Canada
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12
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Shibata M, Shen MM. Stem cells in genetically-engineered mouse models of prostate cancer. Endocr Relat Cancer 2015; 22:T199-208. [PMID: 26341780 PMCID: PMC4618022 DOI: 10.1530/erc-15-0367] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/04/2015] [Indexed: 12/24/2022]
Abstract
The cancer stem cell model proposes that tumors have a hierarchical organization in which tumorigenic cells give rise to non-tumorigenic cells, with only a subset of stem-like cells able to propagate the tumor. In the case of prostate cancer, recent analyses of genetically engineered mouse (GEM) models have provided evidence supporting the existence of cancer stem cells in vivo. These studies suggest that cancer stem cells capable of tumor propagation exist at various stages of tumor progression from prostatic intraepithelial neoplasia (PIN) to advanced metastatic and castration-resistant disease. However, studies of stem cells in prostate cancer have been limited by available approaches for evaluating their functional properties in cell culture and transplantation assays. Given the role of the tumor microenvironment and the putative cancer stem cell niche, future studies using GEM models to analyze cancer stem cells in their native tissue microenvironment are likely to be highly informative.
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Affiliation(s)
- Maho Shibata
- Departments of MedicineGenetics and Development, Urology, and Systems Biology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York 10032, USA
| | - Michael M Shen
- Departments of MedicineGenetics and Development, Urology, and Systems Biology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York 10032, USA
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13
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Prostate Cancer Stem Cells: Research Advances. Int J Mol Sci 2015; 16:27433-49. [PMID: 26593898 PMCID: PMC4661894 DOI: 10.3390/ijms161126036] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 09/26/2015] [Accepted: 10/08/2015] [Indexed: 12/18/2022] Open
Abstract
Cancer stem cells have been defined as cells within a tumor that possesses the capacity to self-renew and to cause the heterogeneous lineages of cancer cells that comprise the tumor. Experimental evidence showed that these highly tumorigenic cells might be responsible for initiation and progression of cancer into invasive and metastatic disease. Eradicating prostate cancer stem cells, the root of the problem, has been considered as a promising target in prostate cancer treatment to improve the prognosis for patients with advanced stages of the disease.
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14
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Wang BE, Wang X, Long JE, Eastham-Anderson J, Firestein R, Junttila MR. Castration-resistant Lgr5(+) cells are long-lived stem cells required for prostatic regeneration. Stem Cell Reports 2015; 4:768-79. [PMID: 25937372 PMCID: PMC4437474 DOI: 10.1016/j.stemcr.2015.04.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 04/02/2015] [Accepted: 04/03/2015] [Indexed: 11/05/2022] Open
Abstract
The adult prostate possesses a significant regenerative capacity that is of great interest for understanding adult stem cell biology. We demonstrate that leucine-rich repeat-containing G protein-coupled receptor 5 (Lgr5) is expressed in a rare population of prostate epithelial progenitor cells, and a castration-resistant Lgr5+ population exists in regressed prostate tissue. Genetic lineage tracing revealed that Lgr5+ cells and their progeny are primarily luminal. Lgr5+ castration-resistant cells are long lived and upon regeneration, both luminal Lgr5+ cells and basal Lgr5+ cells expand. Moreover, single Lgr5+ cells can generate multilineage prostatic structures in renal transplantation assays. Additionally, Lgr5+ cell depletion revealed that the regenerative potential of the castrated adult prostate depends on Lgr5+ cells. Together, these data reveal insights into the cellular hierarchy of castration-resistant Lgr5+ cells, indicate a requirement for Lgr5+ cells during prostatic regeneration, and identify an Lgr5+ adult stem cell population in the prostate. Castration-resistant Lgr5+ basal and luminal cells exist in regressed prostate Lgr5+ castration-resistant cells are long lived During regeneration, Lgr5+ basal and luminal cells expand Prostate regeneration requires Lgr5+ cells
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Affiliation(s)
- Bu-er Wang
- Department of Translational Oncology, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Xi Wang
- Department of Translational Oncology, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Jason E Long
- Department of Translational Oncology, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Jeff Eastham-Anderson
- Center for Advanced Light Microscopy, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Ron Firestein
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Melissa R Junttila
- Department of Translational Oncology, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA.
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15
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Allina DO, Andreeva YY, Zavalishina LE, Kekeeva TV, Frank GA. [High-grade prostatic intraepithelial neoplasia: state-of-the-art]. Arkh Patol 2015; 77:69-74. [PMID: 25868372 DOI: 10.17116/patol201577169-] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
According to current views, high-grade prostatic intraepithelial neoplasia is the most likely precursor of prostate adenocarcinoma. This review gives the latest data of genetic, proteomic, and morphological analyses of this neoplasia and touches upon the probems that might arise when searching for new markers for differential diagnosis and prognosis estimation.
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Affiliation(s)
- D O Allina
- Russian Medical Academy of Postgraduate Education
| | | | | | - T V Kekeeva
- Research Center for Medical Genetics, Russian Academy of Medical Sciences, Moscow
| | - G A Frank
- Russian Medical Academy of Postgraduate Education
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16
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Akter SH, Lean FZX, Lu J, Grieco V, Palmieri C. Different Growth Patterns of Canine Prostatic Carcinoma Suggests Different Models of Tumor-Initiating Cells. Vet Pathol 2015; 52:1027-33. [PMID: 25755134 DOI: 10.1177/0300985815574008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Controversies remain regarding the cell type from which human prostate cancer originates, and many attempts have been made to identify the cellular origin of canine prostate cancer but without definitive proof. This study aims to evaluate the expression of luminal (androgen receptor [AR], cytokeratin [CK]8/18) and basal (CK14, CK5) cell markers in different histologic subtypes of canine prostatic carcinoma (PC) and to suggest the most likely tumor-initiating cells. Normal prostates (n = 8) were characterized by AR+CK8/18+ luminal cells and few CK5+ basal cells, while CK14 was absent. Similar pattern was observed in all 35 prostates with benign prostatic hyperplasia, except few scattered CK14+ basal cells in 13 samples (37.14%). AR was localized in the nucleus of both normal and hyperplastic cells. In 34 samples of PC, the following growth patterns were identified: cribriform (44.12%), solid (32.35%), small acinar/ductal (20.59%), and micropapillary (2.94%). Most PCs expressed AR and CK8/18, while CK5 and CK14 expression was observed in 25% and 20% of cases, respectively. AR revealed a variable intracellular distribution, both nuclear and cytoplasmic. Solid PC was characterized by an undifferentiated or aberrant phenotype with a reduced expression of AR and CK8/18, increased number of CK14+ cells, and 7 antigen expression patterns. This study demonstrated a predominance of differentiated luminal cell types in canine prostatic tumors, although the role of basal cells in prostate carcinogenesis should also be considered. Moreover, few scattered CK5+ cells in AR+CK8/18+ tumors identified the existence of intermediate cells, from which neoplastic transformation may alternatively commence.
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Affiliation(s)
- S H Akter
- School of Veterinary Science, The University of Queensland, Gatton Campus, Gatton, Queensland, Australia
| | - F Z X Lean
- School of Veterinary Science, The University of Queensland, Gatton Campus, Gatton, Queensland, Australia
| | - J Lu
- School of Veterinary Science, The University of Queensland, Gatton Campus, Gatton, Queensland, Australia
| | - V Grieco
- Department of Veterinary Science and Public Health, Universita' degli Studi di Milano, Milan, Italy
| | - C Palmieri
- School of Veterinary Science, The University of Queensland, Gatton Campus, Gatton, Queensland, Australia
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17
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Adisa JO, Egbujo EC, Ibrahim B, Musa B, Madukwe J. Expression of some selected cytokeratins and Ki67 protein in prostatic tumor: can these be used as tumor markers. Pan Afr Med J 2015; 20:46. [PMID: 26090004 PMCID: PMC4449993 DOI: 10.11604/pamj.2015.20.46.3926] [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: 01/28/2014] [Accepted: 07/23/2014] [Indexed: 12/18/2022] Open
Abstract
Introduction Diagnosis of prostatic diseases with Immunohistochemistry still faces challenges because of the peculiar histology of the prostate and difference(s) in reactivity of Monoclonal antibodies (MoAb) to benign and malignant changes. Methods Thirty (30) archived paraffin embedded tissue samples from primary prostate tumors (15 Benign Prostatic Hyperplasia (BPH) and 15 Cancer of the prostate (CaP)) were sectioned at thickness of 5µm and confirmed as BPH or CaP. Sections from each sample were stained by Immunohistochemistry using the Streptavidin-biotin method and using CK5/6, CK7, CK8,CK20 and Ki67 antibodies (Zymed Antibody products). Appropriate positive and negative controls for each antibody were setup alongside the test slides. Results BPH samples were reactive to Ck5/6 (93.3%), Ck7 (80%) and Ck8 (100%). Only 13.3% of BPH samples were reactive to Ki67. The reactivity of Ck5/6, 7, 8 in CaP is a contrast with only 3(20%) of samples positive with Ck5/6, 2(13.3%) positive with Ck7 and 14(93.3%) with Ck8. While reactivity of Ck 8 is similar in BPH and CaP, no reaction was recorded in Ck 20 in both BPH and CaP. Ki67 was only reactive in 2(13.3) of BPH samples and 15(100%) of CaP. Only Ck 8 was expressed in both BPH and CaP. There was co-expression of Ck5/6, 7,8 and Ki67 in13.3%; Ck7and Ki67 in 13.3% in both BPH and CaP. Conclusion The various cytokeratins are individually expressed in both BPH and CaP. Ck5/6 and Ck7 are co-expressed and may be used in the diagnosis of BPH, Ck5/6,7,8 and Ki67 are co-expressed in Prostatic adenocarcinoma and squamous cell carcinoma of the prostate while Ck8 and Ki67 are co-expressed and may be used for diagnosis of Prostatic adenocarcinoma alone.
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Affiliation(s)
- James Olayiwola Adisa
- Department of Medical Laboratory Science, University of Jos, Plateau State Nigeria ; Meena Histopathology and Cytology Laboratory, Jos Plateau State, Nigeria
| | - Ejike Chukwudi Egbujo
- Department of Medical Laboratory Science, University of Jos, Plateau State Nigeria ; Meena Histopathology and Cytology Laboratory, Jos Plateau State, Nigeria
| | - Babangida Ibrahim
- Department of Medical Laboratory Science, University of Maiduguri, Borno State, Nigeria
| | - Bukar Musa
- Department of Medical Laboratory Science, University of Maiduguri, Borno State, Nigeria
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18
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Nuclear iASPP may facilitate prostate cancer progression. Cell Death Dis 2014; 5:e1492. [PMID: 25341046 PMCID: PMC4649527 DOI: 10.1038/cddis.2014.442] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 08/11/2014] [Accepted: 08/25/2014] [Indexed: 12/13/2022]
Abstract
One of the major challenges in prostate cancer (PCa) research is the identification of key players that control the progression of primary cancers to invasive and metastatic disease. The majority of metastatic PCa express wild-type p53, whereas loss of p63 expression, a p53 family member, is a common event. Here we identify inhibitor of apoptosis-stimulating protein of p53 (iASPP), a common cellular regulator of p53 and p63, as an important player of PCa progression. Detailed analysis of the prostate epithelium of iASPP transgenic mice, iASPPΔ8/Δ8 mice, revealed that iASPP deficiency resulted in a reduction in the number of p63 expressing basal epithelial cells compared with that seen in wild-type mice. Nuclear and cytoplasmic iASPP expression was greater in PCa samples compared with benign epithelium. Importantly nuclear iASPP associated with p53 accumulation in vitro and in vivo. A pair of isogenic primary and metastatic PCa cell lines revealed that nuclear iASPP is enriched in the highly metastatic PCa cells. Nuclear iASPP is often detected in PCa cells located at the invasive leading edge in vivo. Increased iASPP expression associated with metastatic disease and PCa-specific death in a clinical cohort with long-term follow-up. These results suggest that iASPP function is required to maintain the expression of p63 in normal basal prostate epithelium, and nuclear iASPP may inactivate p53 function and facilitate PCa progression. Thus iASPP expression may act as a predictive marker of PCa progression.
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19
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Lee DK, Liu Y, Liao L, Wang F, Xu J. The prostate basal cell (BC) heterogeneity and the p63-positive BC differentiation spectrum in mice. Int J Biol Sci 2014; 10:1007-17. [PMID: 25210499 PMCID: PMC4159692 DOI: 10.7150/ijbs.9997] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 07/27/2014] [Indexed: 12/23/2022] Open
Abstract
The prostate epithelium is composed of basal (BC), luminal (LEC), and neuroendocrine (NEC) cells. It is unclear how many subtypes of BCs in the prostate and which subtype of BCs contains the main stem cell niche in the adult prostate. Here we report seven BC subpopulations according to their p63, cytokeratin 14 (K14) and K5 expression patterns, including p63-positive/K14-negative/K5-negative (p63+/K14-/K5-), p63-/K14+/K5-, p63-/K14-/K5+, p63+/K14+/K5-, p63+/K14-/K5+, p63-/K14+/K5+, and p63+/K14+/K5+ BCs. We generated a p63-CreERT2 knock-in mouse line that expresses tamoxifen-inducible Cre activity in the p63-expressing cells, including the prostate BCs. We then crossbred this line with ROSA26R mice, and generated p63-CreERT2×ROSA26R bi-genic mice harboring the Cre-activated β-galactosidase reporter gene. We treated these bi-genic mice with tamoxifen to mark the p63+ BCs at different ages or under different hormonal conditions, and then traced the lineage differentiation of these genetically labeled BCs. We discovered that these p63+ BCs contain self-renewable stem cells in culture and efficiently differentiated into LECs, NECs and BCs in the postnatal, adult and re-generating mouse prostates. Therefore, BC population contains heterogeneous BCs that express different combinations of the p63, K14 and K5 differentiation markers. Because K14+ and K5+ BCs were previously shown to be extremely inefficient to produce LECs in adulthood, we propose that the p63+/K5-/K14- subpopulation of BCs contains most stem-like cells, especially in adult animals.
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Affiliation(s)
- Dong-Kee Lee
- 1. Department of Molecular and Cellular Biology, Houston, Texas, USA
| | - Yonghong Liu
- 1. Department of Molecular and Cellular Biology, Houston, Texas, USA; ; 2. Institute of Bioscience and Technology, Texas A&M University Health Science Center, Houston, TX, USA
| | - Lan Liao
- 1. Department of Molecular and Cellular Biology, Houston, Texas, USA
| | - Fen Wang
- 2. Institute of Bioscience and Technology, Texas A&M University Health Science Center, Houston, TX, USA
| | - Jianming Xu
- 1. Department of Molecular and Cellular Biology, Houston, Texas, USA; ; 3. Institute for Cancer Medicine, Luzhou Medical College, Luzhou, Sichuan, China
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20
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Karthaus WR, Iaquinta PJ, Drost J, Gracanin A, van Boxtel R, Wongvipat J, Dowling CM, Gao D, Begthel H, Sachs N, Vries RGJ, Cuppen E, Chen Y, Sawyers CL, Clevers HC. Identification of multipotent luminal progenitor cells in human prostate organoid cultures. Cell 2014; 159:163-175. [PMID: 25201529 DOI: 10.1016/j.cell.2014.08.017] [Citation(s) in RCA: 506] [Impact Index Per Article: 50.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 07/08/2014] [Accepted: 08/18/2014] [Indexed: 12/30/2022]
Abstract
The prostate gland consists of basal and luminal cells arranged as pseudostratified epithelium. In tissue recombination models, only basal cells reconstitute a complete prostate gland, yet murine lineage-tracing experiments show that luminal cells generate basal cells. It has remained challenging to address the molecular details of these transitions and whether they apply to humans, due to the lack of culture conditions that recapitulate prostate gland architecture. Here, we describe a 3D culture system that supports long-term expansion of primary mouse and human prostate organoids, composed of fully differentiated CK5+ basal and CK8+ luminal cells. Organoids are genetically stable, reconstitute prostate glands in recombination assays, and can be experimentally manipulated. Single human luminal and basal cells give rise to organoids, yet luminal-cell-derived organoids more closely resemble prostate glands. These data support a luminal multilineage progenitor cell model for prostate tissue and establish a robust, scalable system for mechanistic studies.
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Affiliation(s)
- Wouter R Karthaus
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center Utrecht, 3584 CT, Utrecht, Netherlands
| | - Phillip J Iaquinta
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Jarno Drost
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center Utrecht, 3584 CT, Utrecht, Netherlands
| | - Ana Gracanin
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center Utrecht, 3584 CT, Utrecht, Netherlands
| | - Ruben van Boxtel
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center Utrecht, 3584 CT, Utrecht, Netherlands
| | - John Wongvipat
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Catherine M Dowling
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Dong Gao
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Harry Begthel
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center Utrecht, 3584 CT, Utrecht, Netherlands
| | - Norman Sachs
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center Utrecht, 3584 CT, Utrecht, Netherlands
| | - Robert G J Vries
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center Utrecht, 3584 CT, Utrecht, Netherlands
| | - Edwin Cuppen
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center Utrecht, 3584 CT, Utrecht, Netherlands
| | - Yu Chen
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Charles L Sawyers
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Howard Hughes Medical Institute
| | - Hans C Clevers
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center Utrecht, 3584 CT, Utrecht, Netherlands.
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21
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Li W, Ye B, Cai XY, Lin JH, Gao WQ. Differentiation of human umbilical cord mesenchymal stem cells into prostate-like epithelial cells in vivo. PLoS One 2014; 9:e102657. [PMID: 25054276 PMCID: PMC4108360 DOI: 10.1371/journal.pone.0102657] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Accepted: 06/21/2014] [Indexed: 01/22/2023] Open
Abstract
Although human umbilical cord mesenchymal stem cells (hUC-MSCs) have been identified as a new source of MSCs for potential application in regenerative medicine, their full potential of differentiation has not been determined. In particular, whether they have the capability to differentiate into epithelial cells of endodermal origin such as the prostate epithelial cells is unknown. Here we report that when hUC-MSCs were combined with rat urogenital sinus stromal cells (rUGSSs) and transplanted into the renal capsule in vivo, they could differentiate into prostate epithelial-like cells that could be verified by prostate epithelial cell-specific markers including the prostate specific antigen. The prostatic glandular structures formed in vivo displayed similar cellular architecture with lumens and branching features as seen for a normal prostate. In addition, the human origin of the hUC-MSCs was confirmed by immunocytochemistry for human nuclear antigen. These findings together indicate that hUC-MSCs have the capability to differentiate into epithelial-like cells that are normally derived from the endoderm, implicating their potential applications in tissue repair and regeneration of many endoderm-derived internal organs.
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Affiliation(s)
- Wang Li
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bo Ye
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao-Yan Cai
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jian-Hua Lin
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wei-Qiang Gao
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
- * E-mail:
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22
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Frank SB, Miranti CK. Disruption of prostate epithelial differentiation pathways and prostate cancer development. Front Oncol 2013; 3:273. [PMID: 24199173 PMCID: PMC3813973 DOI: 10.3389/fonc.2013.00273] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 10/18/2013] [Indexed: 12/14/2022] Open
Abstract
One of the foremost problems in the prostate cancer (PCa) field is the inability to distinguish aggressive from indolent disease, which leads to difficult prognoses and thousands of unnecessary surgeries. This limitation stems from the fact that the mechanisms of tumorigenesis in the prostate are poorly understood. Some genetic alterations are commonly reported in prostate tumors, including upregulation of Myc, fusion of Ets genes to androgen-regulated promoters, and loss of Pten. However, the specific roles of these aberrations in tumor initiation and progression are poorly understood. Likewise, the cell of origin for PCa remains controversial and may be linked to the aggressive potential of the tumor. One important clue is that prostate tumors co-express basal and luminal protein markers that are restricted to their distinct cell types in normal tissue. Prostate epithelium contains layer-specific stem cells as well as rare bipotent cells, which can differentiate into basal or luminal cells. We hypothesize that the primary oncogenic cell of origin is a transient-differentiating bipotent cell. Such a cell must maintain tight temporal and spatial control of differentiation pathways, thus increasing its susceptibility for oncogenic disruption. In support of this hypothesis, many of the pathways known to be involved in prostate differentiation can be linked to genes commonly altered in PCa. In this article, we review what is known about important differentiation pathways (Myc, p38MAPK, Notch, PI3K/Pten) in the prostate and how their misregulation could lead to oncogenesis. Better understanding of normal differentiation will offer new insights into tumor initiation and may help explain the functional significance of common genetic alterations seen in PCa. Additionally, this understanding could lead to new methods for classifying prostate tumors based on their differentiation status and may aid in identifying more aggressive tumors.
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Affiliation(s)
- Sander B Frank
- Laboratory of Integrin Signaling and Tumorigenesis, Van Andel Research Institute , Grand Rapids, MI , USA ; Genetics Graduate Program, Michigan State University , East Lansing, MI , USA
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23
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Prostate stem cells in the development of benign prostate hyperplasia and prostate cancer: emerging role and concepts. BIOMED RESEARCH INTERNATIONAL 2013; 2013:107954. [PMID: 23936768 PMCID: PMC3722776 DOI: 10.1155/2013/107954] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 06/14/2013] [Accepted: 06/14/2013] [Indexed: 12/21/2022]
Abstract
Benign Prostate hyperplasia (BPH) and prostate cancer (PCa) are the most common prostatic disorders affecting elderly men. Multiple factors including hormonal imbalance, disruption of cell proliferation, apoptosis, chronic inflammation, and aging are thought to be responsible for the pathophysiology of these diseases. Both BPH and PCa are considered to be arisen from aberrant proliferation of prostate stem cells. Recent studies on BPH and PCa have provided significant evidence for the origin of these diseases from stem cells that share characteristics with normal prostate stem cells. Aberrant changes in prostate stem cell regulatory factors may contribute to the development of BPH or PCa. Understanding these regulatory factors may provide insight into the mechanisms that convert quiescent adult prostate cells into proliferating compartments and lead to BPH or carcinoma. Ultimately, the knowledge of the unique prostate stem or stem-like cells in the pathogenesis and development of hyperplasia will facilitate the development of new therapeutic targets for BPH and PCa. In this review, we address recent progress towards understanding the putative role and complexities of stem cells in the development of BPH and PCa.
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24
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Subcellular localization of p44/WDR77 determines proliferation and differentiation of prostate epithelial cells. PLoS One 2012; 7:e49173. [PMID: 23145110 PMCID: PMC3493495 DOI: 10.1371/journal.pone.0049173] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 10/08/2012] [Indexed: 11/19/2022] Open
Abstract
The molecular mechanism that controls the proliferation and differentiation of prostate epithelial cells is currently unknown. We previously identified a 44-kDa protein (p44/wdr77) as an androgen receptor-interacting protein that regulates a set of androgen receptor target genes in prostate epithelial cells and prostate cancer. In this study, we found that p44 localizes in the cytoplasm of prostate epithelial cells at the early stage of prostate development when cells are proliferating, and its nuclear translocation is associated with cellular and functional differentiation in adult prostate tissue. We further demonstrated that cytoplasmic p44 protein is essential for proliferation of prostate epithelial cells, whereas nuclear p44 is required for cell differentiation and prostate- specific protein secretion. These studies suggest a novel mechanism by which proliferation and differentiation of prostate epithelial cells are controlled by p44's location in the cell.
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25
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Multipotent and unipotent progenitors contribute to prostate postnatal development. Nat Cell Biol 2012; 14:1131-8. [PMID: 23064263 DOI: 10.1038/ncb2600] [Citation(s) in RCA: 165] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Accepted: 09/07/2012] [Indexed: 01/03/2023]
Abstract
The prostate is a glandular epithelium composed of basal, luminal and neuroendocrine cells that originate from the urogenital sinus during embryonic development. After birth, the prostate keeps developing until the end of puberty. Here, we used inducible genetic lineage tracing experiments in mice to investigate the cellular hierarchy that governs prostate postnatal development. We found that prostate postnatal development is mediated by basal multipotent stem cells that differentiate into basal, luminal and neuroendocrine cells, as well as by unipotent basal and luminal progenitors. Clonal analysis of basal cells revealed the existence of bipotent and unipotent basal progenitors as well as basal cells already committed to the luminal lineage with intermediate cells co-expressing basal and luminal markers associated with this commitment step. The existence of multipotent basal progenitors during prostate postnatal development contrasts with the distinct pools of unipotent basal and luminal stem cells that mediate adult prostate regeneration. Our results uncover the cellular hierarchy acting during prostate development and will be instrumental in defining the cellular origin and the mechanisms underlying prostate cancer initiation.
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26
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Oldridge EE, Pellacani D, Collins AT, Maitland NJ. Prostate cancer stem cells: are they androgen-responsive? Mol Cell Endocrinol 2012; 360:14-24. [PMID: 21802490 DOI: 10.1016/j.mce.2011.07.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 06/29/2011] [Accepted: 07/01/2011] [Indexed: 12/18/2022]
Abstract
The prostate gland is highly dependent on androgens for its development, growth and function. Consequently, the prostatic epithelium predominantly consists of androgen-dependent luminal cells, which express the androgen receptor at high levels. In contrast, androgens are not required for the survival of the androgen-responsive, but androgen-independent, basal compartment in which stem cells reside. Basal and luminal cells are linked in a hierarchical pathway, which most probably exists as a continuum with different stages of phenotypic change. Prostate cancer is also characterised by heterogeneity, which is reflected in its response to treatment. The putative androgen receptor negative cancer stem cell (CSC) is likely to form a resistant core after most androgen-based therapies, contributing to the evolution of castration-resistant disease. The development of CSC-targeted therapies is now of crucial importance and identifying the phenotypic differences between CSCs and both their progeny will be key in this process.
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Affiliation(s)
- Emma E Oldridge
- YCR Cancer Research Unit, Department of Biology, University of York, Wentworth Way, York, YO10 5DD, UK
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27
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Lee SO, Tian J, Huang CK, Ma Z, Lai KP, Hsiao H, Jiang M, Yeh S, Chang C. Suppressor role of androgen receptor in proliferation of prostate basal epithelial and progenitor cells. J Endocrinol 2012; 213:173-82. [PMID: 22393245 DOI: 10.1530/joe-11-0474] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Early studies have reported the differential roles of androgen receptor (AR) in different types (luminal, basal intermediate, and stromal) of prostate cancer cells. In vivo mouse model tumor studies using the total prostate epithelial knockout mice (pes-ARKO) also revealed that AR played a suppressive role in proliferation of the CK5(+)/CK8(+) progenitor/intermediate cells but a positive role in the CK5(-)/CK8(+) luminal epithelial cells. Using three different resources (one human basal epithelial cell line, one mouse basal epithelial originated progenitor cell line, and a basal epithelium-specific ARKO mouse model), we here demonstrated that the AR in basal epithelial cells of normal prostate plays a suppressive role in their proliferation but a positive role in differentiation into luminal epithelial cells. These results led us to conclude that ARs may play a negative role to suppress CK5(+) basal epithelial and progenitor cell proliferation, yet play an essential role to drive basal epithelial cells into more differentiated states. These results may explain why differential AR expression in different cell types within normal prostate is needed and suggest that ARs in prostate basal epithelial cells, although expressed at a very low level, are necessary to maintain the balance between progenitor cells and differentiated luminal epithelial cells.
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Affiliation(s)
- Soo Ok Lee
- George Whipple Laboratory for Cancer Research, Department of Pathology, University of Rochester Medical Center, Rochester, New York 14642, USA
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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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29
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Ting MC, Liao CP, Yan C, Jia L, Groshen S, Frenkel B, Roy-Burman P, Coetzee GA, Maxson R. An enhancer from the 8q24 prostate cancer risk region is sufficient to direct reporter gene expression to a subset of prostate stem-like epithelial cells in transgenic mice. Dis Model Mech 2012; 5:366-74. [PMID: 22279083 PMCID: PMC3339830 DOI: 10.1242/dmm.008458] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Regions in the 8q24 gene desert contribute significantly to the risk of prostate cancer and other adult cancers. This region contains several DNA regions with enhancer activity in cultured cells. One such segment, histone acetylation peak 10 (AcP10), contains a risk single nucleotide polymorphism (SNP) that is significantly associated with the pathogenesis of colorectal, prostate and other cancers. The mechanism by which AcP10 influences cancer risk remains unknown. Here we show that AcP10 contains a sequence that is highly conserved across terrestrial vertebrates and is capable in transgenic mice of directing reporter gene expression to a subset of prostate lumenal epithelial cells. These cells include a small population of Nkx3.1-positive cells that persist even after androgen ablation. Castration-resistant Nkx3.1-positive (CARN) cells were shown by others to function both as stem cells and cells of origin of prostate cancer. Our results thus provide a mechanism by which AcP10 could influence prostate cancer risk.
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Affiliation(s)
- Man-Chun Ting
- Department of Biochemistry and Molecular Biology, Norris Cancer Center, USC Keck School of Medicine, 1441 Eastlake Avenue, Los Angeles, CA 90089, USA
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30
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Gu Z, Zhou L, Gao S, Wang Z. Nuclear transport signals control cellular localization and function of androgen receptor cofactor p44/WDR77. PLoS One 2011; 6:e22395. [PMID: 21789256 PMCID: PMC3137635 DOI: 10.1371/journal.pone.0022395] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Accepted: 06/20/2011] [Indexed: 12/26/2022] Open
Abstract
The androgen receptor (AR) cofactor p44/WDR77, which regulates expression of a set of androgen target genes, is required for differentiation of prostate epithelium. Aberrant localization of p44/WDR77 in the cytoplasm is associated with prostate tumorigenesis. Here, we describe studies that used the mouse prostate and human prostate cancer cells as model systems to investigate signals that control subcellular localization of p44/WDR77. We observed distinct subcellular location of p44/WDR77 during prostate development. p44/WDR77 localizes in the cytoplasm at the early stage of prostate development, when prostate epithelial cells are rapidly proliferating, and in the nucleus in adult prostate, when epithelial cells are fully differentiated. Subcellular localization assays designed to span the entire open-reading frame of p44/WDR77 protein revealed the presence of two nuclear exclusion signal (NES) and three nuclear localization signal (NLS) sequences in the p44/WDR77 protein. Site-directed mutagenesis of critical residues within an NLS led to loss of nuclear localization and transcriptional activity of p44/WDR77, suggesting that nuclear localization of p44/WDR77 is essential for its function as a transcriptional cofactor for AR. Three identified NLS were not functional in AR-positive prostate cancer (LNCaP and 22RV1) cells, which led to localization of p44/WDR77 in cytoplasm. The function of NLS in LNCaP cells could be restored by factor(s) from Cos 7 or PC3 cells. Mass spectrometric (MALDI-TOF/TOF) analysis identified proteins associated with an NLS and an NES in prostate cancer cells. These results provide a basis for understanding subcellular transport of p44/WDR77 during prostate development and tumorigenesis.
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Affiliation(s)
- Zhongping Gu
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Liran Zhou
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Shen Gao
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Zhengxin Wang
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
- * E-mail:
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31
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Abstract
The prostate gland is the site of the second most common cancer in men in the UK, with 9,280 deaths recorded in 2000. Another common disease of the prostate is benign prostatic hyperplasia and both conditions are believed to arise as a result of changes in the balance between cell proliferation and differentiation. There are three types of prostatic epithelial cell, proliferative basal, secretory luminal, and neuroendocrine. All three are believed to be derived from a common stem cell through differentiation along different pathways but the mechanisms behind these processes is poorly understood. In particular, there has until recently been very little information about prostate stem cell growth and differentiation. This review will discuss ways of distinguishing these prostate cell types using markers, such as keratins. Methods available for the culture of prostate epithelial cells and for the characterisation of stem cells both in monolayer and three-dimensional models are examined.
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Affiliation(s)
- David L Hudson
- The Prostate Stem Cell Laboratory, Institute of Cancer Research, 15 Cotdswold Rd, Sutton, Surrey, SM2 5NG, UK (E-mail,
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32
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Niu Y, Wang J, Shang Z, Huang SP, Shyr CR, Yeh S, Chang C. Increased CK5/CK8-positive intermediate cells with stromal smooth muscle cell atrophy in the mice lacking prostate epithelial androgen receptor. PLoS One 2011; 6:e20202. [PMID: 21754978 PMCID: PMC3130731 DOI: 10.1371/journal.pone.0020202] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2011] [Accepted: 04/27/2011] [Indexed: 11/19/2022] Open
Abstract
Results from tissue recombination experiments documented well that stromal androgen receptor (AR) plays essential roles in prostate development, but epithelial AR has little roles in prostate development. Using cell specific knockout AR strategy, we generated pes-ARKO mouse with knock out of AR only in the prostate epithelial cells and demonstrated that epithelial AR might also play important roles in the development of prostate gland. We found mice lacking the prostate epithelial AR have increased apoptosis in epithelial CK8-positive luminal cells and increased proliferation in epithelial CK5-positive basal cells. The consequences of these two contrasting results could then lead to the expansion of CK5/CK8-positive intermediate cells, accompanied by stromal atrophy and impaired ductal morphogenesis. Molecular mechanism dissection found AR target gene, TGF-β1, might play important roles in this epithelial AR-to-stromal morphogenesis modulation. Collectively, these results provided novel information relevant to epithelial AR functions in epithelial-stromal interactions during the development of normal prostate, and suggested AR could also function as suppressor in selective cells within prostate.
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Affiliation(s)
- Yuanjie Niu
- Chawnshang Chang Sex Hormone Research Center, Tianjin Institute of Urology, Tianjin Medical University, Tianjin, China
- George Whipple Lab for Cancer Research, Departments of Pathology and Urology, University of Rochester Medical Center, Rochester, New York, United States of America
- * E-mail: (YN); (CC)
| | - Juan Wang
- Chawnshang Chang Sex Hormone Research Center, Tianjin Institute of Urology, Tianjin Medical University, Tianjin, China
| | - Zhiqun Shang
- Chawnshang Chang Sex Hormone Research Center, Tianjin Institute of Urology, Tianjin Medical University, Tianjin, China
- George Whipple Lab for Cancer Research, Departments of Pathology and Urology, University of Rochester Medical Center, Rochester, New York, United States of America
| | - Shu-Pin Huang
- George Whipple Lab for Cancer Research, Departments of Pathology and Urology, University of Rochester Medical Center, Rochester, New York, United States of America
| | - Chih-Rong Shyr
- Sex Hormone Research Center, China Medical University and Hospital, Taichung, Taiwan
| | - Shuyuan Yeh
- George Whipple Lab for Cancer Research, Departments of Pathology and Urology, University of Rochester Medical Center, Rochester, New York, United States of America
| | - Chawnshang Chang
- Chawnshang Chang Sex Hormone Research Center, Tianjin Institute of Urology, Tianjin Medical University, Tianjin, China
- George Whipple Lab for Cancer Research, Departments of Pathology and Urology, University of Rochester Medical Center, Rochester, New York, United States of America
- Sex Hormone Research Center, China Medical University and Hospital, Taichung, Taiwan
- * E-mail: (YN); (CC)
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33
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Development and limitations of lentivirus vectors as tools for tracking differentiation in prostate epithelial cells. Exp Cell Res 2010; 316:3161-71. [DOI: 10.1016/j.yexcr.2010.08.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Revised: 07/31/2010] [Accepted: 08/07/2010] [Indexed: 11/20/2022]
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Gao S, Wu H, Wang F, Wang Z. Altered differentiation and proliferation of prostate epithelium in mice lacking the androgen receptor cofactor p44/WDR77. Endocrinology 2010; 151:3941-53. [PMID: 20519372 PMCID: PMC2940529 DOI: 10.1210/en.2009-1080] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2009] [Accepted: 04/26/2010] [Indexed: 11/19/2022]
Abstract
Although it has been observed that various cofactors modulate activity of the androgen receptor (AR), the specific relationship between AR cofactors and prostate development and functions has not been well studied. To determine whether AR cofactor p44/WDR77 is important in prostate growth and development, we examined prostate architecture in p44/WDR77-null mice and wild-type (WT) littermates. Prostate glands from p44/WDR77-deficient animals were not only smaller than those from WT mice but also had fewer branches and terminal duct tips and were deficient in production of secretory proteins. The p44/WDR77-null prostate tissue was less differentiated and hyperproliferative relative to WT littermates. In addition, the altered expression of androgen-regulated genes was observed in the p44/WDR77-null prostate. Thus, these results suggest that the AR cofactor p44/WDR77 plays important roles in prostate growth and differentiation by modulating AR-target gene expression.
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Affiliation(s)
- Shen Gao
- Department of Cancer Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030-4009, USA
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35
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Basal epithelial stem cells are efficient targets for prostate cancer initiation. Proc Natl Acad Sci U S A 2010; 107:2610-5. [PMID: 20133806 DOI: 10.1073/pnas.0913873107] [Citation(s) in RCA: 204] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Prevailing theories suggest that luminal cells are the origin of prostate cancer because it is histologically defined by basal cell loss and malignant luminal cell expansion. We introduced a series of genetic alterations into prospectively identified populations of murine basal/stem and luminal cells in an in vivo prostate regeneration assay. Stromal induction of FGF signaling, increased expression of the ETS family transcription factor ERG1, and constitutive activation of PI3K signaling were evaluated. Combination of activated PI3K signaling and heightened androgen receptor signaling, which is associated with disease progression to androgen independence, was also performed. Even though luminal cells fail to respond, basal/stem cells demonstrate efficient capacity for cancer initiation and can produce luminal-like disease characteristic of human prostate cancer in multiple models. This finding provides evidence in support of basal epithelial stem cells as one target cell for prostate cancer initiation and demonstrates the propensity of primitive cells for tumorigenesis.
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36
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Abstract
The concept that stem cells reside in prostate epithelia is well accepted and has led to significant efforts aimed at isolating and characterizing adult prostate stem/progenitor cells from both human and rodent prostate tissues. Understanding how prostatic stem and/or progenitor cells give rise to prostate epithelia during development and maintain homeostasis of the prostate gland in adulthood is a major research focus. Furthermore, the ability to identify and manipulate prostatic stem cells (PSCs) holds enormous promise for the development of new approaches to manage and treat prostate cancer. This review maps the pathways to identifying, isolating, characterizing, and understanding the differentiation capacity of PSCs.
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Affiliation(s)
- Renea A Taylor
- Centre for Urological Research, Monash Institute of Medical Research, Monash University, Australia.
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37
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Abstract
The identification of stem cells and differentiation programs regulating the development and maintenance of the normal prostate epithelium is essential for the identification of the cell type(s) and molecular alterations involved in the development and propagation of prostate cancer (CaP). The p53-homologue p63 is highly expressed in normal prostate basal cells and is a clinically useful biomarker for the diagnosis of CaP. Importantly, p63 has been shown to play a critical role in prostate development. Recent experimental evidence also suggests that this gene is essential for normal stem cell function in the prostate as well as other epithelial organs. Future studies aimed at better defining the role of p63 in the renewal of the adult prostate epithelium are likely to shed new light on the mechanisms involved in prostate carcinogenesis.
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Affiliation(s)
- Chiara Grisanzio
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
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38
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Lai CL, van den Ham R, van Leenders G, van der Lugt J, Teske E. Comparative characterization of the canine normal prostate in intact and castrated animals. Prostate 2008; 68:498-507. [PMID: 18213634 DOI: 10.1002/pros.20721] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Prostate diseases in the dog are generally regarded as representative for their human counterparts. We characterized the normal canine prostate in comparison to the normal human prostate. METHODS Prostates of dogs were examined histomorphologically and by immunohistochemical detection of the markers CK14, HMWCK, CK5, CK18, CK7, UPIII, PSA, and PSMA. RESULTS Histomorphologically, the canine prostate lacks the human zonal differentiation, has much more prominent acini, while comprising less stromal tissue. In general, the canine prostate epithelium displayed a highly differentiated character, with no cells expressing CK14, minimal amounts of cells expressing HMWCK/CK5 and the vast majority of cells expressing CK18 and PSA. After castration, the prostate epithelium regressed, and the remaining tubules were largely populated by cells showing a ductal phenotype (HMWCK+/CK5+/CK18+/CK7+). CONCLUSIONS The human and canine prostate are histologically differently organized. The general scheme of cellular differentiation of the prostate epithelium may however be applicable to both species.
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Affiliation(s)
- Chen-Li Lai
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
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39
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Abstract
Peter Nowell and David Hungerford's discovery of the Philadelphia chromosome facilitated many critical studies that have led to a paradigm shift in our understanding of cancer as a disease of stem cells. This Review focuses on the application of these concepts to investigation of the role of stem cells in prostate cancer initiation and progression. Major strides in the development of in vitro and in vivo assays have enabled identification and characterization of prostate stem cells as well as functional evaluation of the tumorigenic effects of prostate cancer-related genetic alterations.
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Affiliation(s)
- Devon A. Lawson
- Department of Microbiology, Immunology and Molecular Genetics, and
Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, and
Howard Hughes Medical Institute, UCLA, Los Angeles, California, USA
| | - Owen N. Witte
- Department of Microbiology, Immunology and Molecular Genetics, and
Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, and
Howard Hughes Medical Institute, UCLA, Los Angeles, California, USA
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40
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Brown MD, Gilmore PE, Hart CA, Samuel JD, Ramani VAC, George NJ, Clarke NW. Characterization of benign and malignant prostate epithelial Hoechst 33342 side populations. Prostate 2007; 67:1384-96. [PMID: 17639507 DOI: 10.1002/pros.20620] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND The prostate epithelial stem cell has been proposed as the primary origin of neoplastic change in prostate cancer. However, the isolation and characterization of unexpanded prostate epithelial stem cells have proven problematic. METHODS A prostate epithelial side population (SP) has been isolated utilizing a modified Hoechst 33342 dye efflux assay from both benign and malignant prostate tissue. CD45(-ve), integrin alpha2(+ve) Hoechst 33342 SP and NSP cells were isolated by FACS, immunophenotyped and functionally characterized in 3D culture. RESULTS FACS analysis revealed a verapamil sensitive SP accounting for 0.93 +/- 0.12% and 0.57 +/- 0.11% of the total epithelial population from both benign and malignant prostates. The benign SP phenotype revealed a heterogeneous cell population consisting predominantly of small basal cells containing minimal cytoplasm. Conversely, the malignant SP was of undetermined acinar origin and with a complete loss of expression of the CDK2 inhibitor p21(WAF1/Cip1). In vitro androgen-enhanced 3D culture of the benign and malignant SP cells led to the production of spheroids which had acinus like morphology and expressed primitive and basal cell markers. Incorporation of the CD133 marker isolated a further SP sub-fraction accounting for 0.037 +/- 0.01% of epithelial cells. CONCLUSIONS Our observations are consistent with the Hoechst 33342 dye efflux assay isolating a stem cell enriched population which can be further sub-fractionated by CD133 selection. Moreover, the loss of the CDK inhibitor in malignancy is consistent with the hypothesis that neoplastic change originates in the stem cell compartment.
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Affiliation(s)
- Mick D Brown
- ProMPT Genito-Urinary Cancer Research Group, Paterson Institute for Cancer Research, University of Manchester, Manchester, UK.
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41
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Xin L, Lukacs RU, Lawson DA, Cheng D, Witte ON. Self-renewal and multilineage differentiation in vitro from murine prostate stem cells. Stem Cells 2007; 25:2760-9. [PMID: 17641240 DOI: 10.1634/stemcells.2007-0355] [Citation(s) in RCA: 165] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Murine prostate stem cells express integrin alpha 6, which modulates survival, proliferation, and differentiation signaling through its interaction with the extracellular protein laminin. When plated in vitro in laminin containing Matrigel medium, 1 of 500-1,000 murine prostate cells can grow and form clonogenic spheroid structures that we term prostate spheres. Prostate spheres can be serially passaged individually or in bulk to generate daughter spheres with similar composition, demonstrating that sphere-forming cells are capable of self-renewal. Spheres spontaneously undergo lineage specification for basal and transit-amplifying cell types. P63-expressing cells localized to the outer layers of prostate spheres possess higher self-renewal capacity, whereas cells toward the center display a more differentiated transit-amplifying phenotype, as demonstrated by the expression of the prostate stem cell antigen. When dihydrotestosterone is added to the medium, the androgen receptor is stabilized, is imported to the nucleus, and drives differentiation to a luminal cell-like phenotype. A fraction of sphere cells returned to an in vivo environment can undergo differentiation and morphogenesis to form prostate tubular structures with defined basal and luminal layers accompanied by prostatic secretions. This study demonstrates self-renewal and multilineage differentiation from single adult prostate stem/progenitor cells in a specific in vitro microenvironment.
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Affiliation(s)
- Li Xin
- Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
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42
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Letellier G, Perez MJ, Yacoub M, Levillain P, Cussenot O, Fromont G. Epithelial Phenotypes in the Developing Human Prostate. J Histochem Cytochem 2007; 55:885-90. [PMID: 17478449 DOI: 10.1369/jhc.7a7192.2007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
An intermediate population has been identified among prostate glands called transiently amplifying (TA) cells, which are characterized by coexpression of basal and luminal cytokeratins (CKs), high proliferation, and lack of p27 expression. These cells are rare in the normal adult prostate and increase in pretumoral conditions, but their importance in the developing gland remains unknown. We analyzed fetal prostates for the expression of CKs (5/6, 18, 19) and factors involved in proliferation and apoptosis: p63, Ki67, p27, epidermal growth factor (EGFR), Bcl2, androgen receptor (AR). Immunostaining was performed on a tissue microarray, including 40 prostates from fetuses aged 13-42 weeks and normal prostate tissue from 10 adults. In both solid buds and the basal compartment of canalized glands, cells expressed p63, CK5/6, CK19, CK18, BCL2, EGFR and were p27 negative. Luminal cells of fetal canalized glands continue to express CK19, EGFR, and BCL2, without p27 expression. In contrast, adult epithelial luminal cells showed diffuse AR and p27 expression, without CK19, BCL2, and EGFR staining. Proliferation was high and diffuse in fetal glands and rare and restricted to basal cells in adult glands. These results indicate that most fetal epithelial prostatic cells exhibit the phenotype of TA cells, suggesting their regulatory function in prostate development.
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Affiliation(s)
- Guy Letellier
- Service de Pédiatrie, Centre Hospitalier Universitaire-Université de Poitiers, Poitiers, France
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43
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Kasper S, Cookson MS. Mechanisms leading to the development of hormone-resistant prostate cancer. Urol Clin North Am 2006; 33:201-10, vii. [PMID: 16631458 DOI: 10.1016/j.ucl.2005.12.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Advanced and metastatic prostate cancers remain potentially lethal tumors. Although androgen deprivation therapy remains the most effective treatment, patients who progress to androgen independence die of their disease. This article focuses on the mechanisms by which hormone resistance develops, including the reactivation of androgen receptor during androgen deprivation therapy, the role of cancer stem cells, and the emergence of epithelial-mesenchymal transition cells, which have increased metastatic potential. It is through an enhanced understanding of these mechanisms that new therapies can be developed to combat this disease.
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Affiliation(s)
- Susan Kasper
- Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, TN 37232-2765, USA.
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44
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Signoretti S, Loda M. Prostate stem cells: from development to cancer. Semin Cancer Biol 2006; 17:219-24. [PMID: 16781871 DOI: 10.1016/j.semcancer.2006.04.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2006] [Accepted: 04/27/2006] [Indexed: 12/27/2022]
Abstract
The cell of origin of prostate cancer is still unknown. The identification of these cells depends on understanding prostate cell differentiation lineage during development as well as adult prostate epithelium renewal. Recent advances in the field have shed light on the hierarchical relationship between epithelial prostate cells. On the basis of this knowledge, the isolation and characterization of prostate cancer stem cells may now be possible and could provide an explanation for the known clinical and molecular heterogeneity of human prostate cancer.
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Affiliation(s)
- Sabina Signoretti
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA.
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45
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46
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Abstract
PURPOSE This is part 1 of a 2-part review. Research into the molecular mechanisms underlying the various aspects of prostate cancer (PCa) requires the use of in vivo and in vitro model systems. In the last few years many new cell lines have been established by investigators from primary tissue sources and clonal derivatives of previously established lines. Therefore, the purpose of this 2-part review is to catalogue the current human cell lines developed for PCa research, as reported in the literature. Part 1 includes tissue culture cell lines derived from metastases, primary tumors and nonadenocarcinomas that were established without the use of transgenes. It also includes a section describing lines that have been contaminated with other lines, shown not to be of prostatic origin or whose identity is being challenged. MATERIALS AND METHODS Prostate cell lines included in this review were identified by extensive searching of the literature using several strategies, including PubMed searches and book chapter reviews. RESULTS In total we describe the derivation, phenotype, genotype and characterization of molecular markers expressed by approximately 200 lines and sublines used in PCa research, including those derived from primary tumors, metastases and normal prostate tissue. We paid particular attention to the expression of prostate specific antigen, androgen receptor, cytokeratins and other molecular markers used to indicate the status of PCa and the prostatic lineage of a given line. In an attempt to provide PCa researchers with a resource of information regarding new and established cell lines we have also created an online database of these PCa cell lines freely accessible via the World Wide Web at http://www.CaPCellLines.com. The web based interface allows researchers to peruse and print information regarding cell lines, add new cell lines and update or add new information regarding established cell lines. CONCLUSIONS This compendium of cell lines currently used in PCa research combined with access to our on-line database provides researchers with a continually updated and valuable resource for investigating the molecular mechanisms of PCa.
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Affiliation(s)
- R E Sobel
- Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada.
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47
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Long RM, Morrissey C, Fitzpatrick JM, Watson RWG. Prostate epithelial cell differentiation and its relevance to the understanding of prostate cancer therapies. Clin Sci (Lond) 2005; 108:1-11. [PMID: 15384949 DOI: 10.1042/cs20040241] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Prostate cancer is the most common malignancy in males in the western world. However, little is known about its origin and development. This review highlights the biology of the normal prostate gland and the differentiation of basal epithelial cells to a secretory phenotype. Alterations in this differentiation process leading to cancer and androgen-independent disease are discussed, as well as a full characterization of prostate epithelial cells. A full understanding of the origin and characteristics of prostate cancer epithelial cells will be important if we are to develop therapeutic strategies to combat the heterogeneous nature of this disease.
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Affiliation(s)
- Ronan M Long
- Department of Surgery, Mater Misericordiae University Hospital and Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Republic of Ireland.
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48
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Abstract
Benign prostatic hyperplasia and prostate cancer arise as a consequence of changes in the balance between cell division and differentiation. Little, however, is known about the control of this process. Stem cells are a small population of cells that divide occasionally to produce transit-amplifying cells that in turn produce the differentiated cell types of the tissue. It is believed that cancer cell proliferation is also driven by stem cells. We have shown that around one in 200 prostate epithelial cells have characteristics of stem cells and that these cells are contained within a population with a distinct keratin expression pattern. Work is now ongoing to identify markers for these cells that will allow us to study the role they play in prostatic disease.
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Affiliation(s)
- D L Hudson
- Bob Champion Prostate Stem Cell Laboratory, Male Urological Cancer Research Centre, Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey, SM2 5NG, UK.
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49
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Papini S, Rosellini A, Campani D, DeMatteis A, Selli C, Revoltella RP. Selective growth of epithelial basal cells from human prostate in a three-dimensional organ culture. Prostate 2004; 59:383-92. [PMID: 15065086 DOI: 10.1002/pros.20021] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND A three-dimensional organotypic culture method has been developed for selectively growing epithelial basal cells from human benign prostate. METHODS Tissue fragments were cultured on sponges for several weeks and the viability of luminal and basal epithelium and cellular responses to 4,5alpha-dihydrotesterone (DHT) stimulation were studied. RESULTS The gland tissue could be successfully maintained showing preservation of ducts and lobules as in vivo. Without DHT, a progressive hyperplasia of basal cells was observed: these cells proliferated with retention of the lumen or forming nests with squamous differentiation, lining the surface of the fragment and migrating to the underlying sponge. In contrast, secretory cells disappeared. Epithelial cells isolated from long-term cultures showed a typical basal cell-immunophenotype. DHT-treated tissues maintained a much higher percentage of luminal cells than untreated tissues. CONCLUSIONS These systems allow the study of proliferation and differentiation of basal cells within their natural microenvironment as well as prostate pathobiology.
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Affiliation(s)
- Sandra Papini
- Institute of Biomedical Technologies, Immunobiology and Cell Differentiation Unit, National Research Council of Italy, Pisa, Italy
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Islam TA, Patel A, Kaisary AV, Mondragon A, Waxman J, Kamalati T. In vitro deregulation of markers characteristic of human prostate epithelial cells. Tissue Cell 2004; 36:107-13. [PMID: 15041412 DOI: 10.1016/j.tice.2003.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2003] [Revised: 09/22/2003] [Accepted: 10/08/2003] [Indexed: 11/29/2022]
Abstract
We have screened primary cultures of human prostate for the expression of markers reported to be characteristic of specific cell lineages in vivo, in order to ascertain whether human prostate cells in vitro maintain and reflect their in vivo differentiated phenotypes and to evaluate the homogeneity of the populations of cells that can be derived from this tissue. Using single and dual stain immunofluorescent microscopy to analyse very early organoid and subsequently derived monolayer stage cultures, we have observed that expression of markers characteristic of human prostate epithelial cells in vivo is deregulated within 48h, indicating that dissociation of human prostate tissue and cultivation of prostate epithelial cells in culture can result in promiscuous expression of cell type specific markers of prostate epithelial cells. These observations have important implications for studies of cell lineage and differentiation of prostate cells in vitro.
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Affiliation(s)
- Tarin A Islam
- Cancer Cell Biology Section, Division of Medicine, Faculty of Medicine, Imperial College, Hammersmith Campus, 5th floor, Cyclotron Building, Du Cane Road, London W12 0NN, UK
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