1
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Tang DG. Understanding and targeting prostate cancer cell heterogeneity and plasticity. Semin Cancer Biol 2022; 82:68-93. [PMID: 34844845 PMCID: PMC9106849 DOI: 10.1016/j.semcancer.2021.11.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/01/2021] [Accepted: 11/01/2021] [Indexed: 12/12/2022]
Abstract
Prostate cancer (PCa) is a prevalent malignancy that occurs primarily in old males. Prostate tumors in different patients manifest significant inter-patient heterogeneity with respect to histo-morphological presentations and molecular architecture. An individual patient tumor also harbors genetically distinct clones in which PCa cells display intra-tumor heterogeneity in molecular features and phenotypic marker expression. This inherent PCa cell heterogeneity, e.g., in the expression of androgen receptor (AR), constitutes a barrier to the long-term therapeutic efficacy of AR-targeting therapies. Furthermore, tumor progression as well as therapeutic treatments induce PCa cell plasticity such that AR-positive PCa cells may turn into AR-negative cells and prostate tumors may switch lineage identity from adenocarcinomas to neuroendocrine-like tumors. This induced PCa cell plasticity similarly confers resistance to AR-targeting and other therapies. In this review, I first discuss PCa from the perspective of an abnormal organ development and deregulated cellular differentiation, and discuss the luminal progenitor cells as the likely cells of origin for PCa. I then focus on intrinsic PCa cell heterogeneity in treatment-naïve tumors with the presence of prostate cancer stem cells (PCSCs). I further elaborate on PCa cell plasticity induced by genetic alterations and therapeutic interventions, and present potential strategies to therapeutically tackle PCa cell heterogeneity and plasticity. My discussions will make it clear that, to achieve enduring clinical efficacy, both intrinsic PCa cell heterogeneity and induced PCa cell plasticity need to be targeted with novel combinatorial approaches.
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Affiliation(s)
- Dean G Tang
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA; Experimental Therapeutics (ET) Graduate Program, The University at Buffalo & Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA.
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2
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Lin Q, Cao J, Du X, Yang K, Shen Y, Wang W, Klocker H, Shi J, Zhang J. The HeyL-Aromatase Axis Promotes Cancer Stem Cell Properties by Endogenous Estrogen-Induced Autophagy in Castration-Resistant Prostate Cancer. Front Oncol 2022; 11:787953. [PMID: 35096586 PMCID: PMC8789881 DOI: 10.3389/fonc.2021.787953] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 12/13/2021] [Indexed: 01/14/2023] Open
Abstract
Treatment of patients with castration-resistant prostate cancer (CRPC) remains a major clinical challenge. We previously showed that estrogenic effects contribute to CRPC progression and are primarily caused by the increased endogenous estradiol produced via highly expressed aromatase. However, the mechanism of aromatase upregulation and its role in CRPC are poorly described. In this study, we report that HeyL is aberrantly upregulated in CRPC tissues, and its expression is positively correlated with aromatase levels. HeyL overexpression increased endogenous estradiol levels and estrogen receptor-α (ERα) transcriptional activity by upregulating CYP19A1 expression, which encodes aromatase, enhancing prostate cancer stem cell (PCSC) properties in PC3 cells. Mechanistically, HeyL bound to the CYP19A1 promoter and activated its transcription. HeyL overexpression significantly promoted bicalutamide resistance in LNCaP cells, which was reversed by the aromatase inhibitor letrozole. In PC3 cells, the HeyL-aromatase axis promoted the PCSC phenotype by upregulating autophagy-related genes, while the autophagy inhibitor chloroquine (CQ) suppressed the aromatase-induced PCSC phenotype. The activated HeyL-aromatase axis promoted PCSC autophagy via ERα-mediated estrogenic effects. Taken together, our results indicated that the HeyL-aromatase axis could increase endogenous estradiol levels and activate ERα to suppress PCSC apoptosis by promoting autophagy, which enhances the understanding of how endogenous estrogenic effects influence CRPC development.
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Affiliation(s)
- Qimei Lin
- Department of Biochemistry and Molecular Biology, College of Life Sciences, Bioactive Materials Key Laboratory of the Ministry of Education, Nankai University, Tianjin, China
| | - Jiasong Cao
- Department of Biochemistry and Molecular Biology, College of Life Sciences, Bioactive Materials Key Laboratory of the Ministry of Education, Nankai University, Tianjin, China.,Tianjin Key Lab of Human Development and Reproductive Regulation, Tianjin Central Hospital of Obstetrics and Gynecology, Nankai University, Tianjin, China
| | - Xiaoling Du
- Department of Biochemistry and Molecular Biology, College of Life Sciences, Bioactive Materials Key Laboratory of the Ministry of Education, Nankai University, Tianjin, China
| | - Kuo Yang
- Department of Urology of the Second Hospital of Tianjin Medical University, Tianjin, China
| | - Yongmei Shen
- Department of Biochemistry and Molecular Biology, College of Life Sciences, Bioactive Materials Key Laboratory of the Ministry of Education, Nankai University, Tianjin, China.,Tianjin Key Lab of Human Development and Reproductive Regulation, Tianjin Central Hospital of Obstetrics and Gynecology, Nankai University, Tianjin, China
| | - Weishu Wang
- State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences, Nankai University, Tianjin, China
| | - Helmut Klocker
- Department of Urology, Division of Experimental Urology, Medical University of Innsbruck, Innsbruck, Austria
| | - Jiandang Shi
- Department of Biochemistry and Molecular Biology, College of Life Sciences, Bioactive Materials Key Laboratory of the Ministry of Education, Nankai University, Tianjin, China.,State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences, Nankai University, Tianjin, China
| | - Ju Zhang
- Department of Biochemistry and Molecular Biology, College of Life Sciences, Bioactive Materials Key Laboratory of the Ministry of Education, Nankai University, Tianjin, China
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3
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Nishimura K, Mori J, Sawada T, Nomura S, Kouzmenko A, Yamashita K, Kanemoto Y, Kurokawa T, Hayakawa A, Tokiwa S, Ochi M, Shimmura H, Kato S. Profiling of Androgen-Dependent Enhancer RNAs Expression in Human Prostate Tumors: Search for Malignancy Transition Markers. Res Rep Urol 2021; 13:705-713. [PMID: 34549035 PMCID: PMC8449685 DOI: 10.2147/rru.s328661] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 08/24/2021] [Indexed: 01/15/2023] Open
Abstract
Introduction Although the ability of androgens to promote prostate cancer development has been known for decades, the molecular mechanisms of androgen receptor (AR) signaling in the tumorigenesis remain unclear. Enhancer RNAs (eRNAs) transcribed from strong enhancers, or super-enhancers (SEs), have recently emerged as a novel class of regulatory non-coding RNAs (ncRNAs) that facilitate transcription, including that of androgen target genes, through chromatin looping to position enhancers proximate to the promoters. The aim of this study was to assess androgen-dependent transcription in prostate tumors of eRNAs (designated as KLK3eRNAs) from the SE of the KLK3 gene encoding the prostate-specific antigen (PSA) protein, a clinical marker of prostate carcinogenesis. Materials and Methods The androgen-induced KLK3eRNAs were identified in the LNCaP human prostate cancer cell line. The expressions of these KLK3eRNAs together with KLK3 and AR mRNA transcripts were assessed by qRT-PCR in prostate tumor samples from five prostate cancer patients. Results Androgen-induced KLK3eRNAs have been identified in the LNCaP cells, and their expression was further analyzed in tumors of prostate cancer patients. Transcripts of the tested KLK3eRNAs have been detected in all clinical samples, but their expression patterns differed between individual tumor specimens. We found a statistically significant correlation between the levels of the KLK3 and AR mRNAs with those of the previously reported KLK3eRNAs, while such correlation was not observed for novel KLK3eRNAs described in our recent report. Conclusion Presented data suggest that prostate tumor development may associate with epigenetic reorganization in the KLK3 genomic regulatory elements reflected by changes of the KLK3eRNA expression. Our findings support a potential of eRNAs profiling to be used as diagnostic marker.
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Affiliation(s)
- Koichi Nishimura
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Japan.,Graduate School of Life Science and Engineering, Iryo Sosei University, Iwaki, Japan
| | - Jinichi Mori
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Japan.,Graduate School of Life Science and Engineering, Iryo Sosei University, Iwaki, Japan.,Department of Hematology, Jyoban Hospital, Iwaki, Japan
| | - Takahiro Sawada
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Japan.,Graduate School of Life Science and Engineering, Iryo Sosei University, Iwaki, Japan
| | - Shuhei Nomura
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Japan.,Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | | | | | - Yoshiaki Kanemoto
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Japan.,Graduate School of Life Science and Engineering, Iryo Sosei University, Iwaki, Japan
| | - Tomohiro Kurokawa
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Japan.,Graduate School of Life Science and Engineering, Iryo Sosei University, Iwaki, Japan
| | - Akira Hayakawa
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Japan
| | - Suguru Tokiwa
- Department of Urology, Jyoban Hospital, Iwaki, Japan
| | | | | | - Shigeaki Kato
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Japan.,Graduate School of Life Science and Engineering, Iryo Sosei University, Iwaki, Japan
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4
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Sawada T, Nishimura K, Mori J, Kanemoto Y, Kouzmenko A, Amano R, Hayakawa A, Tokiwa S, Shimmura H, Kato S. Androgen-dependent and DNA-binding-independent association of androgen receptor with chromatic regions coding androgen-induced noncoding RNAs. Biosci Biotechnol Biochem 2021; 85:2121-2130. [PMID: 34297060 DOI: 10.1093/bbb/zbab135] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/15/2021] [Indexed: 11/14/2022]
Abstract
Androgen induces the binding of its receptor (AR) to androgen-responsive elements (AREs), while genome-wide studies showed that most androgen-induced AR binding sites on chromatin were unrelated to AREs. Enhancer RNAs (eRNAs), a class of noncoding RNAs (ncRNAs), are transcribed from superenhancers (SEs) and trigger the formation of large ribonucleoprotein condensates of transcription factors. By in silico search, an SE is found to be located on the locus of KLK3 that encodes prostate specific antigen. On the KLK3 SE, androgen-induced expression of ncRNAs was detected and designated as KLK3eRNAs in LNCaP cells, and androgen-induced association of AR and FOXA1 on the KLK3eRNA coding regions was detected. Such androgen-induced association of an AR mutant lacking DNA binding activity on the KLK3eRNA coding regions was undetectable on an exogenous ARE. Thus, the present findings suggest a molecular basis of androgen-induced association of AR with chromatin on ARE-unrelated sequences.
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Affiliation(s)
- Takahiro Sawada
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
- Graduate School of Life Science and Engineering, Iryo Sosei University, Iino, Chuo-dai, Iwaki, Fukushima, Japan
| | - Koichi Nishimura
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
- Graduate School of Life Science and Engineering, Iryo Sosei University, Iino, Chuo-dai, Iwaki, Fukushima, Japan
| | - Jinichi Mori
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
- Graduate School of Life Science and Engineering, Iryo Sosei University, Iino, Chuo-dai, Iwaki, Fukushima, Japan
- Department of Hematology, Jyoban Hospital, Tokiwa Foundation, Iwaki, Fukushima, Japan
| | - Yoshiaki Kanemoto
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
- Graduate School of Life Science and Engineering, Iryo Sosei University, Iino, Chuo-dai, Iwaki, Fukushima, Japan
| | - Alexander Kouzmenko
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
| | - Rei Amano
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
| | - Akira Hayakawa
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
- Graduate School of Life Science and Engineering, Iryo Sosei University, Iino, Chuo-dai, Iwaki, Fukushima, Japan
| | - Suguru Tokiwa
- Department of Urology, Jyoban Hospital, Tokiwa Foundation, Iwaki, Fukushima, Japan
| | - Hiroaki Shimmura
- Department of Urology, Jyoban Hospital, Tokiwa Foundation, Iwaki, Fukushima, Japan
| | - Shigeaki Kato
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
- Graduate School of Life Science and Engineering, Iryo Sosei University, Iino, Chuo-dai, Iwaki, Fukushima, Japan
- School of Medicine, Fukushima Medical University, Fukushima, Fukushima, Japan
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5
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Phage display screening identifies a prostate specific antigen (PSA) -/lo prostate cancer cell specific peptide to retard castration resistance of prostate cancer. Transl Oncol 2021; 14:101020. [PMID: 33508757 PMCID: PMC7844130 DOI: 10.1016/j.tranon.2021.101020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/10/2021] [Accepted: 01/12/2021] [Indexed: 01/06/2023] Open
Abstract
To our knowledge, this is the first study to identify a peptide (named as “TAP1”) that specifically binds with PSA−/lo prostate cancer cells. TAP1 inhibited PCa growth both in vitro and in vivo. TAP1 also improved the anti-tumor effect of the anti-androgens and chemotherapeutic agents in vitro. The effects of TAP1 might at least in part by shortening the lengths of telomeres and decreasing the expression of HOXB9 and TGF-β2. Our results indicated that therapeutic peptides that specifically target prostate cancer stem cell might be a very valuable and promising approach to overcome chemoresistance and prevent recurrence in patients with PCa.
Patients with prostate cancer (PCa) will eventually progress to castrate-resistant prostate cancer (CRPC) after androgen deprivation therapy (ADT) treatment. Prostate-specific antigen (PSA)−/lo cells which harbor self-renewing long-term tumor-propagating cells that can be enriched using ALDH+CD44+α2β1+ and can initiate tumor development may represent a critical source of CRPC cells. Our purpose was to find a peptide that specifically targets PSA−/lo PCa cells to retard the development of CRPC. PSA+ and PSA−/lo cells were successfully separated from LNCaP xenograft tumors after prostate- PSAP-GFP vector infection and FACS. A variety of PSA−/lo cells specifically targeting peptide (named as “TAP1” targeted affinity peptide 1) was identified by using phage display library screening. The highest binding rate in TAP1 binding cell subpopulations are identified to be among ALDH+CD44+CXCR4+CD24+ cells. TAP1 significantly inhibited PCa growth both in vitro and in vivo. TAP1 significantly improved the anti-proliferation effect of the anti-androgens (Charcoal dextran-stripped serum (CDSS)+Bicalutamide, Enzalutamide) and chemotherapeutic agents (Abiraterone, Docetaxel, Etoposide) in vitro. TAP1 treatment shortens the length of telomeres in ALDH+CD44+CXCR4+CD24+ cells and significantly reduces the expression of Homeobox B9 (HOXB9) and TGF-β2. In conclusion, PSA−/lo PCa cell-specific targeting peptide (TAP1) that suppressed PCa cell growth both in vitro and in vivo and improved the drug sensitivities of anti-androgens and chemotherapeutic agents at least through shortening the length of telomere and reducing the expression of HOXB9 and TGF-β2. Therapeutic peptides that specifically target prostate cancer stem cell might be a very valuable and promising approach to overcome chemoresistance and prevent recurrence in patients with PCa.
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6
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Kader A, Brangsch J, Kaufmann JO, Zhao J, Mangarova DB, Moeckel J, Adams LC, Sack I, Taupitz M, Hamm B, Makowski MR. Molecular MR Imaging of Prostate Cancer. Biomedicines 2020; 9:1. [PMID: 33375045 PMCID: PMC7822017 DOI: 10.3390/biomedicines9010001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 02/06/2023] Open
Abstract
This review summarizes recent developments regarding molecular imaging markers for magnetic resonance imaging (MRI) of prostate cancer (PCa). Currently, the clinical standard includes MR imaging using unspecific gadolinium-based contrast agents. Specific molecular probes for the diagnosis of PCa could improve the molecular characterization of the tumor in a non-invasive examination. Furthermore, molecular probes could enable targeted therapies to suppress tumor growth or reduce the tumor size.
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Affiliation(s)
- Avan Kader
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
- Department of Biology, Chemistry and Pharmacy, Institute of Biology, Freie Universität Berlin, Königin-Luise-Str. 1-3, 14195 Berlin, Germany
| | - Julia Brangsch
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
- Department of Veterinary Medicine, Institute of Animal Welfare, Animal Behavior and Laboratory Animal Science, Freie Universität Berlin, Königsweg 67, Building 21, 14163 Berlin, Germany
| | - Jan O. Kaufmann
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
- Division 1.5 Protein Analysis, Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, 12489 Berlin, Germany
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - Jing Zhao
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
| | - Dilyana B. Mangarova
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str. 15, Building 12, 14163 Berlin, Germany
| | - Jana Moeckel
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
| | - Lisa C. Adams
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
| | - Ingolf Sack
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
| | - Matthias Taupitz
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
| | - Bernd Hamm
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
| | - Marcus R. Makowski
- Department of Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (J.B.); (J.O.K.); (J.Z.); (D.B.M.); (J.M.); (L.C.A.); (I.S.); (M.T.); (B.H.); (M.R.M.)
- School of Biomedical Engineering and Imaging Sciences, King’s College London, St Thomas’ Hospital Westminster Bridge Road, London SE1 7EH, UK
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum Rechts der Isar, Technical University of Munich, Munich (TUM), Ismaninger Str. 22, 81675 München, Germany
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7
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Wang Y, Gao W, Li Y, Chow ST, Xie W, Zhang X, Zhou J, Chan FL. Interplay between orphan nuclear receptors and androgen receptor-dependent or-independent growth signalings in prostate cancer. Mol Aspects Med 2020; 78:100921. [PMID: 33121737 DOI: 10.1016/j.mam.2020.100921] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/08/2020] [Accepted: 10/15/2020] [Indexed: 12/14/2022]
Abstract
It is well-established that both the initial and advanced growth of prostate cancer depends critically on androgens and thus on the activated androgen receptor (AR) -mediated signaling pathway. The unique hormone-dependent feature of prostate cancer forms the biological basis of hormone or androgen-deprivation therapy (ADT) that aims to suppress the AR signaling by androgen depletion or AR antagonists. ADT still remains the mainstay treatment option for locally advanced or metastatic prostate cancer. However, most patients upon ADT will inevitably develop therapy-resistance and progress to relapse in the form of castration-resistant disease (castration-resistant prostate cancer or CRPC) or even a more aggressive androgen-independent subtype (therapy-related neuroendocrine prostate cancer or NEPC). Recent advances show that besides AR, some ligand-independent members of nuclear receptor superfamily-designated as orphan nuclear receptors (ONRs), as their endogenous physiological ligands are either absent or not yet identified to date, also play significant roles in the growth regulation of prostate cancer via multiple AR-dependent or -independent (AR-bypass) pathways or mechanisms. In this review, we summarize the recent progress in the newly elucidated roles of ONRs in prostate cancer, with a focus on their interplay in the AR-dependent pathways (intratumoral androgen biosynthesis and suppression of AR signaling) and AR-independent pathways or cellular processes (hypoxia, oncogene- or tumor suppressor-induced senescence, apoptosis and regulation of prostate cancer stem cells). These ONRs with their newly characterized roles not only can serve as novel biomarkers but also as potential therapeutic targets for management of advanced prostate cancer.
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Affiliation(s)
- Yuliang Wang
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
| | - Weijie Gao
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Youjia Li
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Sin Ting Chow
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Wenjuan Xie
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Xingxing Zhang
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Jianfu Zhou
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China; Department of Urology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510370, China
| | - Franky Leung Chan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
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8
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Gene Expression Alterations during Development of Castration-Resistant Prostate Cancer Are Detected in Circulating Tumor Cells. Cancers (Basel) 2019; 12:cancers12010039. [PMID: 31877738 PMCID: PMC7016678 DOI: 10.3390/cancers12010039] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 12/19/2019] [Indexed: 11/24/2022] Open
Abstract
Development of castration-resistant prostate cancer (CRPC) is associated with alterations in gene expression involved in steroidogenesis and androgen signaling. This study investigates whether gene expression changes related to CRPC development can be identified in circulating tumor cells (CTCs). Gene expression in paired CTC samples from 29 patients, before androgen deprivation therapy (ADT) and at CRPC relapse, was compared using a panel including 47 genes related to prostate cancer progression on a qPCR platform. Fourteen genes displayed significantly changed gene expression in CTCs at CRPC relapse compared to before start of ADT. The genes with increased expression at CRPC relapse were related to steroidogenesis, AR-signaling, and anti-apoptosis. In contrast, expression of prostate markers was downregulated at CRPC. We also show that midkine (MDK) expression in CTCs from metastatic hormone-sensitive prostate cancer (mHSPC) was associated to short cancer-specific survival (CSS). In conclusion, this study shows that gene expression patterns in CTCs reflect the development of CRPC, and that MDK expression levels in CTCs are prognostic for cancer-specific survival in mHSPC. This study emphasizes the role of CTCs in exploring mechanisms of therapy resistance, as well as a promising biomarker for prognostic and treatment-predictive purposes in advanced mHSPC.
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9
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Bonk S, Kluth M, Hube-Magg C, Polonski A, Soekeland G, Makropidi-Fraune G, Möller-Koop C, Witt M, Luebke AM, Hinsch A, Burandt E, Steurer S, Clauditz TS, Schlomm T, Perez D, Graefen M, Heinzer H, Huland H, Izbicki JR, Wilczak W, Minner S, Sauter G, Simon R. Prognostic and diagnostic role of PSA immunohistochemistry: A tissue microarray study on 21,000 normal and cancerous tissues. Oncotarget 2019; 10:5439-5453. [PMID: 31534629 PMCID: PMC6739211 DOI: 10.18632/oncotarget.27145] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 07/17/2019] [Indexed: 12/19/2022] Open
Abstract
To assess the prognostic and diagnostic utility of PSA immunostaining, tissue microarrays containing 17,747 prostate cancers, 3,442 other tumors from 82 different (sub) types and 608 normal tissues were analyzed at two different antibody concentrations (1:100 and 1:800). In normal tissues, PSA expression was limited to prostate epithelial cells. In prostate cancers, PSA staining was seen in 99.9–100% (1:800–1:100) primary tumors, 98.7–99.7% of advanced recurrent cancers, in 84.6–91.4% castration resistant cancers, and in 7.7–18.8% of 16 small cell carcinomas. Among extraprostatic tumors, PSA stained positive in 0–3 (1:800-1:100) of 19 osteosarcomas, 1-2 of 34 ovarian cancers, 0-2 of 35 malignant mesotheliomas, 0–1 of 21 thyroid gland carcinomas and 0–1 of 26 large cell lung cancers. Reduced staining intensity and loss of apical staining were strongly linked to unfavorable tumor phenotype and poor prognosis (p
< 0.0001 each). This was all the more the case if a combined “PSA pattern score” was built from staining intensity and pattern. The prognostic impact of the “PSA pattern score” was independent of established pre- and postoperative clinico-pathological prognostic features. In conclusion, PSA immunostaining is a strong prognostic parameter in prostate cancer and has high specificity for prostate cancer at a wide range of antibody dilutions.
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Affiliation(s)
- Sarah Bonk
- General, Visceral and Thoracic Surgery Department, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Martina Kluth
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Claudia Hube-Magg
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Adam Polonski
- General, Visceral and Thoracic Surgery Department, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Greta Soekeland
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Christina Möller-Koop
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Melanie Witt
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Andreas M Luebke
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Andrea Hinsch
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Eike Burandt
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Stefan Steurer
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Till S Clauditz
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thorsten Schlomm
- Urology Clinic, Charite - Universitätsmedizin Berlin, Berlin, Germany
| | - Daniel Perez
- General, Visceral and Thoracic Surgery Department, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Markus Graefen
- Martini Clinic, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Hans Heinzer
- Martini Clinic, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Hartwig Huland
- Martini Clinic, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jakob R Izbicki
- General, Visceral and Thoracic Surgery Department, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Waldemar Wilczak
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sarah Minner
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Guido Sauter
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ronald Simon
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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10
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Yoon G, Han MH, Seo AN. Rectal Invasion by Prostatic Adenocarcinoma That Was Initially Diagnosed in a Rectal Polyp on Colonoscopy. J Pathol Transl Med 2019; 53:266-269. [PMID: 30971069 PMCID: PMC6639707 DOI: 10.4132/jptm.2019.03.25] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 03/25/2019] [Indexed: 12/18/2022] Open
Abstract
Despite anatomical proximity, prostatic adenocarcinoma with rectal invasion is extremely rare. We present a case of rectal invasion by prostatic adenocarcinoma that was initially diagnosed from a rectal polyp biopsied on colonoscopy in a 69-year-old Korean man. He presented with dull anal pain and voiding discomfort for several days. Computed tomography revealed either prostatic adenocarcinoma with rectal invasion or rectal adenocarcinoma with prostatic invasion. His tumor marker profile showed normal prostate specific antigen (PSA) level and significantly elevated carcinoembryonic antigen level. Colonoscopy was performed, and a specimen was obtained from a round, 1.5 cm, sessile polyp that was 1.5 cm above the anal verge. Microscopically, glandular tumor structures infiltrated into the rectal mucosa and submucosa. Immunohistochemically, the tumor cells showed alpha-methylacyl-CoA-racemase positivity, PSA positivity, and caudal-related homeobox 2 negativity. The final diagnosis of the rectal polyp was consistent with prostatic adenocarcinoma. Here, we present a rare case that could have been misdiagnosed as rectal adenocarcinoma.
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Affiliation(s)
- Ghilsuk Yoon
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Korea
| | - Man-Hoon Han
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea
| | - An Na Seo
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Korea
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11
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Liu X, Chen X, Rycaj K, Chao HP, Deng Q, Jeter C, Liu C, Honorio S, Li H, Davis T, Suraneni M, Laffin B, Qin J, Li Q, Yang T, Whitney P, Shen J, Huang J, Tang DG. Systematic dissection of phenotypic, functional, and tumorigenic heterogeneity of human prostate cancer cells. Oncotarget 2016; 6:23959-86. [PMID: 26246472 PMCID: PMC4695164 DOI: 10.18632/oncotarget.4260] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 06/12/2015] [Indexed: 02/07/2023] Open
Abstract
Human cancers are heterogeneous containing stem-like cancer cells operationally defined as cancer stem cells (CSCs) that possess great tumor-initiating and long-term tumor-propagating properties. In this study, we systematically dissect the phenotypic, functional and tumorigenic heterogeneity in human prostate cancer (PCa) using xenograft models and >70 patient tumor samples. In the first part, we further investigate the PSA−/lo PCa cell population, which we have recently shown to harbor self-renewing long-term tumor-propagating cells and present several novel findings. We show that discordant AR and PSA expression in both untreated and castration-resistant PCa (CRPC) results in AR+PSA+, AR+PSA−, AR−PSA−, and AR−PSA+ subtypes of PCa cells that manifest differential sensitivities to therapeutics. We further demonstrate that castration leads to a great enrichment of PSA−/lo PCa cells in both xenograft tumors and CRPC samples and systemic androgen levels dynamically regulate the relative abundance of PSA+ versus PSA−/lo PCa cells that impacts the kinetics of tumor growth. We also present evidence that the PSA−/lo PCa cells possess distinct epigenetic profiles. As the PSA−/lo PCa cell population is heterogeneous, in the second part, we employ two PSA− (Du145 and PC3) and two PSA+ (LAPC9 and LAPC4) PCa models as well as patient tumor cells to further dissect the clonogenic and tumorigenic subsets. We report that different PCa models possess distinct tumorigenic subpopulations that both commonly and uniquely express important signaling pathways that could represent therapeutic targets. Our results have important implications in understanding PCa cell heterogeneity, response to clinical therapeutics, and cellular mechanisms underlying CRPC.
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Affiliation(s)
- Xin Liu
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Xin Chen
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Kiera Rycaj
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Hsueh-Ping Chao
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA.,Program in Molecular Carcinogenesis, University of Texas Graduate School of Biomedical Sciences (GSBS), Houston, TX 77030, USA
| | - Qu Deng
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA.,Program in Molecular Carcinogenesis, University of Texas Graduate School of Biomedical Sciences (GSBS), Houston, TX 77030, USA
| | - Collene Jeter
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Can Liu
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Sofia Honorio
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Hangwen Li
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Tammy Davis
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Mahipal Suraneni
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Brian Laffin
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Jichao Qin
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Qiuhui Li
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Tao Yang
- Cancer Stem Cell Institute, Research Center for Translational Medicine, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Pamela Whitney
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Jianjun Shen
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Jiaoti Huang
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA
| | - Dean G Tang
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA.,Cancer Stem Cell Institute, Research Center for Translational Medicine, East Hospital, Tongji University School of Medicine, Shanghai 200120, China.,Program in Molecular Carcinogenesis, University of Texas Graduate School of Biomedical Sciences (GSBS), Houston, TX 77030, USA.,Centers for Cancer Epigenetics, Stem Cell and Developmental Biology, RNA Interference and Non-Coding RNAs, and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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12
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Conti A, Santoni M, Burattini L, Scarpelli M, Mazzucchelli R, Galosi AB, Cheng L, Lopez-Beltran A, Briganti A, Montorsi F, Montironi R. Update on histopathological evaluation of lymphadenectomy specimens from prostate cancer patients. World J Urol 2015; 35:517-526. [PMID: 26694187 DOI: 10.1007/s00345-015-1752-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 12/14/2015] [Indexed: 10/22/2022] Open
Abstract
BACKGROUND Metastases to lymph nodes (LNs) represent an unfavorable prognostic factor in patients with prostate cancer (PCa). Histological examination represents the gold standard in the evaluation of the lymphadenectomy (LND) specimens for the presence of secondary deposits. METHODS AND RESULTS The metastatic detection rate can vary according to the approach adopted in the microscopic analysis of the LNs, which includes frozen-section examination, total inclusion of the tissue with and without whole-mount sections, serial sectioning, and the application of immunohistochemistry. The assessment of the sentinel LN, the search for micrometastases, and the evaluation of atypical LN metastatic sites further contribute to the detection of the metastatic spread. CONCLUSION In this review, an update on the histopathological evaluation of LND specimens in patients with PCa is given, and focus is made on their clinical and prognostic significance.
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Affiliation(s)
- Alessandro Conti
- Department of Odontostomatologic and Specialized Clinical Sciences, Section of Urology, Marche Polytechnic University, School of Medicine, via Conca 71, 60126, Ancona, Italy
| | - Matteo Santoni
- Medical Oncology, Università Politecnica delle Marche, Azienda Ospedaliero-Universitaria Ospedali Riuniti Umberto I, GM Lancisi, G Salesi, via Conca 71, 60126, Ancona, Italy
| | - Luciano Burattini
- Medical Oncology, Università Politecnica delle Marche, Azienda Ospedaliero-Universitaria Ospedali Riuniti Umberto I, GM Lancisi, G Salesi, via Conca 71, 60126, Ancona, Italy
| | - Marina Scarpelli
- Section of Pathological Anatomy, Marche Polytechnic University, School of Medicine, AOU Ospedali Riuniti, via Conca 71, 60126, Torrette, Ancona, Italy
| | - Roberta Mazzucchelli
- Section of Pathological Anatomy, Marche Polytechnic University, School of Medicine, AOU Ospedali Riuniti, via Conca 71, 60126, Torrette, Ancona, Italy
| | - Andrea B Galosi
- Department of Odontostomatologic and Specialized Clinical Sciences, Section of Urology, Marche Polytechnic University, School of Medicine, via Conca 71, 60126, Ancona, Italy
| | - Liang Cheng
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | | | - Alberto Briganti
- Unit of Urology/Division of Oncology, URI, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Francesco Montorsi
- Unit of Urology/Division of Oncology, URI, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Rodolfo Montironi
- Section of Pathological Anatomy, Marche Polytechnic University, School of Medicine, AOU Ospedali Riuniti, via Conca 71, 60126, Torrette, Ancona, Italy.
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13
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Liu ZH, Li C, Kang L, Zhou ZY, Situ S, Wang JP. Prostate cancer incorrectly diagnosed as a rectal tumor: A case report. Oncol Lett 2015; 9:2647-2650. [PMID: 26137121 DOI: 10.3892/ol.2015.3100] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Accepted: 03/04/2015] [Indexed: 01/04/2023] Open
Abstract
Colorectal cancer is the third most commonly diagnosed type of cancer in the world. Prostate adenocarcinoma is the most common male genitourinary tract malignancy, usually occurring after the age of 60. Prostate adenocarcinoma is a highly metastatic cancer. The common metastatic locations of prostate cancer are the bone, lung and liver. The elective locations are bones. Solitary rectal metastasis of prostate cancer is relatively rare. In the present study we report a case of solitary metastasis of a prostate adenocarcinoma with the prostatic capsule intact, which initially led to an incorrect diagnosis.
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Affiliation(s)
- Zhi-Hua Liu
- Department of Colorectal Surgery, Gastrointestinal Institute of Sun Yat-Sen University, The Sixth Affiliated Hospital of Sun Yat-Sen University (Guangdong Gastrointestinal Hospital), Guangzhou, Guangdong 510655, P.R. China
| | - Chao Li
- Department of Colorectal Surgery, Gastrointestinal Institute of Sun Yat-Sen University, The Sixth Affiliated Hospital of Sun Yat-Sen University (Guangdong Gastrointestinal Hospital), Guangzhou, Guangdong 510655, P.R. China
| | - Liang Kang
- Department of Colorectal Surgery, Gastrointestinal Institute of Sun Yat-Sen University, The Sixth Affiliated Hospital of Sun Yat-Sen University (Guangdong Gastrointestinal Hospital), Guangzhou, Guangdong 510655, P.R. China
| | - Zhi-Yang Zhou
- Department of Colorectal Surgery, Gastrointestinal Institute of Sun Yat-Sen University, The Sixth Affiliated Hospital of Sun Yat-Sen University (Guangdong Gastrointestinal Hospital), Guangzhou, Guangdong 510655, P.R. China
| | - Sheng Situ
- Department of Colorectal Surgery, Gastrointestinal Institute of Sun Yat-Sen University, The Sixth Affiliated Hospital of Sun Yat-Sen University (Guangdong Gastrointestinal Hospital), Guangzhou, Guangdong 510655, P.R. China
| | - Jian-Ping Wang
- Department of Colorectal Surgery, Gastrointestinal Institute of Sun Yat-Sen University, The Sixth Affiliated Hospital of Sun Yat-Sen University (Guangdong Gastrointestinal Hospital), Guangzhou, Guangdong 510655, P.R. China
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14
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Ghods R, Ghahremani MH, Madjd Z, Asgari M, Abolhasani M, Tavasoli S, Mahmoudi AR, Darzi M, Pasalar P, Jeddi-Tehrani M, Zarnani AH. High placenta-specific 1/low prostate-specific antigen expression pattern in high-grade prostate adenocarcinoma. Cancer Immunol Immunother 2014; 63:1319-27. [PMID: 25186610 PMCID: PMC11029513 DOI: 10.1007/s00262-014-1594-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Accepted: 08/05/2014] [Indexed: 11/25/2022]
Abstract
BACKGROUND The scarcity of effective therapeutic approaches for prostate cancer (PCa) has encouraged steadily growing interest for the identification of novel antigenic targets. Placenta-specific 1 (PLAC1) is a novel cancer-testis antigen with reported ectopic expression in a variety of tumors and cancer cell lines. The purpose of the present study was to investigate for the first time the differential expression of PLAC1 in PCa tissues. METHODS We investigated the differential expression of PLAC1 in PCa, high-grade prostatic intraepithelial neoplasia (HPIN), benign prostatic hyperplasia (BPH), and nonneoplastic/nonhyperplastic prostate tissues using microarray-based immunohistochemistry (n = 227). The correlation of PLAC1 expression with certain clinicopathological parameters and expression of prostate-specific antigen (PSA), as a prostate epithelial cell differentiation marker, were investigated. RESULTS Placenta-specific 1 (PLAC1) expression was increased in a stepwise manner from BPH to PCa, which expressed highest levels of this molecule, while in a majority of normal tissues, PLAC1 expression was not detected. Moreover, PLAC1 expression was positively associated with Gleason score (p ≤ 0.001). Interestingly, there was a negative correlation between PLAC1 and PSA expression in patients with PCa and HPIN (p ≤ 0.01). Increment of PLAC1 expression increased the odds of PCa and HPIN diagnosis (OR 49.45, 95 % CI for OR 16.17-151.25). CONCLUSION Our findings on differential expression of PLAC1 in PCa plus its positive association with Gleason score and negative correlation with PSA expression highlight the potential usefulness of PLAC1 for targeted PC therapy especially for patients with advanced disease.
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Affiliation(s)
- Roya Ghods
- Department of Molecular Medicine, School of Advanced Medical Technologies, Tehran University of Medical Sciences, TUMS, Tehran, Iran
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Mohammad-Hossein Ghahremani
- Department of Molecular Medicine, School of Advanced Medical Technologies, Tehran University of Medical Sciences, TUMS, Tehran, Iran
- Department of Pharmacology-Toxicology, Faculty of Medicine, Tehran University of Medical Sciences, TUMS, Tehran, Iran
- School of Advanced Technologies in Medicine, Eastern side of Tehran University, 88, Italia St, P.O. box: 1417755469, Tehran, Iran
| | - Zahra Madjd
- Oncopathology Research Center, Iran University of Medical Sciences, IUMS, Tehran, Iran
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, IUMS, Tehran, Iran
| | - Mojgan Asgari
- Oncopathology Research Center, Iran University of Medical Sciences, IUMS, Tehran, Iran
- Department of Pathology, Hasheminejad Kidney Center, Iran University of Medical Sciences, IUMS, Tehran, Iran
| | - Maryam Abolhasani
- Oncopathology Research Center, Iran University of Medical Sciences, IUMS, Tehran, Iran
- Department of Pathology, Hasheminejad Kidney Center, Iran University of Medical Sciences, IUMS, Tehran, Iran
| | - Sanaz Tavasoli
- Department of Nutrition, Science and Research Branch, Azad University, Tehran, Iran
| | - Ahmad-Reza Mahmoudi
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Maryam Darzi
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Parvin Pasalar
- Department of Molecular Medicine, School of Advanced Medical Technologies, Tehran University of Medical Sciences, TUMS, Tehran, Iran
| | - Mahmood Jeddi-Tehrani
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Amir-Hassan Zarnani
- Immunology Research Center, Iran University of Medical Sciences, IUMS, Hemmat Highway, P.O. box: 1449614535, Tehran, Iran
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
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15
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Molecular markers for prostate cancer in formalin-fixed paraffin-embedded tissues. BIOMED RESEARCH INTERNATIONAL 2013; 2013:283635. [PMID: 24371818 PMCID: PMC3859157 DOI: 10.1155/2013/283635] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Accepted: 10/10/2013] [Indexed: 12/14/2022]
Abstract
Prostate cancer (PCa) is the most frequently diagnosed type of cancer in developed countries. The decisive method of diagnosis is based on the results of biopsies, morphologically evaluated to determine the presence or absence of cancer. Although this approach leads to a confident diagnosis in most cases, it can be improved by using the molecular markers present in the tissue. Both miRNAs and proteins are considered excellent candidates for biomarkers in formalin-fixed paraffin-embedded (FFPE) tissues, due to their stability over long periods of time. In the last few years, a concerted effort has been made to develop the necessary tools for their reliable measurement in these types of samples. Furthermore, the use of these kinds of markers may also help in establishing tumor grade and aggressiveness, as well as predicting the possible outcomes in each particular case for the different treatments available. This would aid clinicians in the decision-making process. In this review, we attempt to summarize and discuss the potential use of microRNA and protein profiles in FFPE tissue samples as markers to better predict PCa diagnosis, progression, and response to therapy.
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16
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Qin J, Liu X, Laffin B, Chen X, Choy G, Jeter CR, Calhoun-Davis T, Li H, Palapattu GS, Pang S, Lin K, Huang J, Ivanov I, Li W, Suraneni MV, Tang DG. The PSA(-/lo) prostate cancer cell population harbors self-renewing long-term tumor-propagating cells that resist castration. Cell Stem Cell 2012; 10:556-69. [PMID: 22560078 DOI: 10.1016/j.stem.2012.03.009] [Citation(s) in RCA: 247] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 01/25/2012] [Accepted: 03/08/2012] [Indexed: 10/28/2022]
Abstract
Prostate cancer (PCa) is heterogeneous and contains both differentiated and undifferentiated tumor cells, but the relative functional contribution of these two cell populations remains unclear. Here we report distinct molecular, cellular, and tumor-propagating properties of PCa cells that express high (PSA(+)) and low (PSA(-/lo)) levels of the differentiation marker PSA. PSA(-/lo) PCa cells are quiescent and refractory to stresses including androgen deprivation, exhibit high clonogenic potential, and possess long-term tumor-propagating capacity. They preferentially express stem cell genes and can undergo asymmetric cell division to generate PSA(+) cells. Importantly, PSA(-/lo) PCa cells can initiate robust tumor development and resist androgen ablation in castrated hosts, and they harbor highly tumorigenic castration-resistant PCa cells that can be prospectively enriched using ALDH(+)CD44(+)α2β1(+) phenotype. In contrast, PSA(+) PCa cells possess more limited tumor-propagating capacity, undergo symmetric division, and are sensitive to castration. Altogether, our study suggests that PSA(-/lo) cells may represent a critical source of castration-resistant PCa cells.
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Affiliation(s)
- Jichao Qin
- Department of Molecular Carcinogenesis, University of Texas M.D. Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
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17
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Abbas TO, Al-Naimi AR, Yakoob RA, Al-Bozom IA, Alobaidly AM. Prostate cancer metastases to the rectum: a case report. World J Surg Oncol 2011; 9:56. [PMID: 21599989 PMCID: PMC3127764 DOI: 10.1186/1477-7819-9-56] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2010] [Accepted: 05/21/2011] [Indexed: 11/10/2022] Open
Abstract
Prostate cancer rarely metastasis to the rectum. Findings in the patient reported here emphasize the importance of the relationship between urinary and gastrointestinal symptoms in detecting prostatic neoplasms in older male patients.
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18
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KOBASHI-KATOH R, TANIOKA M, TAKAHASHI K, MIYACHI Y. Skin metastasis of prostate adenocarcinoma to glans penis showing no correlation with serum prostate-specific antigen level. J Dermatol 2009; 36:106-8. [DOI: 10.1111/j.1346-8138.2009.00599.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Peng Y, Li CX, Chen F, Wang Z, Ligr M, Melamed J, Wei J, Gerald W, Pagano M, Garabedian MJ, Lee P. Stimulation of prostate cancer cellular proliferation and invasion by the androgen receptor co-activator ARA70. THE AMERICAN JOURNAL OF PATHOLOGY 2007; 172:225-35. [PMID: 18156210 DOI: 10.2353/ajpath.2008.070065] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
ARA70 was first identified as a gene fused to the ret oncogene in thyroid carcinoma and subsequently as a co-activator for androgen receptor (AR). Two isoforms of ARA70 have been identified: a 70-kDa version called ARA70 alpha and an internally spliced 35-kDa variant termed ARA70 beta. We have previously reported that ARA70 alpha expression is reduced in prostate cancer, and its overexpression inhibits proliferation of LNCaP prostate cancer cells. However, the function of the ARA70 beta isoform in prostate cancer is not understood. In this report we examined the effects of ARA70 beta on AR transcriptional regulation as well as prostate cancer cellular proliferation and invasion. Although both ARA70 alpha and ARA70 beta functioned as transcriptional co-activators of AR in cell-based reporter assays, ARA70 beta overexpression, in contrast to ARA70 alpha, promoted prostate cancer cellular proliferation and invasion through Matrigel. Interestingly, genome-wide expression profiling of cells expressing ARA70 beta revealed an increase in the expression of genes involved in the control of cell division and adhesion, compatible with a role for ARA70 beta in proliferation and invasion. Consistent with its function in promoting cell growth and invasion, ARA70 beta expression was increased in prostate cancer. Our findings implicate ARA70 beta as a regulator of tumor cell growth and metastasis by affecting gene expression.
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Affiliation(s)
- Yi Peng
- Department of Pathology, New York University School of Medicine, New York Harbor Healthcare System, 423 E. 23rd St., Room 6140N, New York, NY 10010, USA
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Yin M, Dhir R, Parwani AV. Diagnostic utility of p501s (prostein) in comparison to prostate specific antigen (PSA) for the detection of metastatic prostatic adenocarcinoma. Diagn Pathol 2007; 2:41. [PMID: 17963516 PMCID: PMC2174437 DOI: 10.1186/1746-1596-2-41] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2007] [Accepted: 10/27/2007] [Indexed: 11/10/2022] Open
Abstract
Background Immunohistochemical detection of prostate specific antigen (PSA) is widely used to identify metastatic prostatic adenocarcinoma. However, PSA may not be expressed in some poorly differentiated prostatic carcinomas and its immunoreactivity has been found in some non-prostatic tissues. P501s (prostein) is a prostate-specific marker that is expressed in the cytoplasm of benign and malignant prostatic glandular cells. It has not been detected in any other normal or malignant tissues. The purpose of this study was to evaluate the expression of P501s in metastatic prostatic adenocarcinoma and compare its expression with PSA. Methods Immunohistochemical stains with anti-P501s antibodies were performed on 5-micron sections of tissue microarray (TMA) specimens. The TMA is constructed with normal donor prostates (NDP), prostatic adenocarcinoma (PRCA), non-neoplastic prostatic tissues adjacent to malignant glands (NAT), benign prostatic hyperplasia (BPH), high-grade prostatic neoplasia (PIN), metastatic adenocarcinoma to lymph nodes (MLN), metastatic adenocarcinoma to other sites (MC), and samples of benign testis, colon, adrenal and kidney. The two groups of metastatic lesions were also subjected to stains with antibodies to PSA. A composite score (ranging from 0 to 3) was assigned to score intensity of staining. Results Granular staining pattern of p501s was seen in all benign glands (score = 1.77 – 2.1) and malignant acini (score = 1.52) at the apical aspect of cytoplasm, predominantly adjacent to the nuclei. No staining was observed in controls including testis, colon, adrenal and kidney. The MLN group received a score of 1.0, with 10% of cases negative for p501s. The MC cases had a score of 0.64, with 16.7% of case showing loss of p501s expression. Although the metastatic lesions demonstrated similar rate of negative expression with PSA antibody, only 2 MC cases (3.3%) showed simultaneous negative stains for both P501S and PSA. Conclusion P501s is an organ specific marker for benign and malignant prostatic epithelial cells. Its characteristic cytoplasmic stain pattern provides an additional valuable immunomarker for detection of metastatic prostatic malignancy, even though the intensity of its expression is reduced, as in the case with PSA. Simultaneous stains with P501S and PSA will greatly improve the detection rate and identify a significant majority of the metastases.
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Affiliation(s)
- Ming Yin
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
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21
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Mai KT, Roustan Delatour NLD, Assiri A, Al-Maghrabi H. Secondary prostatic adenocarcinoma: A cytopathological study of 50 cases. Diagn Cytopathol 2007; 35:91-5. [PMID: 17230567 DOI: 10.1002/dc.20582] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Positive diagnosis of metastatic prostate adenocarcinoma (PAC) can be made by microscopic examination of the cytologic specimens and immunostaining for prostate-specific antigen (PSA) and prostate acid phosphatase (PAP). Immunohistochemical markers have been known to display negative, weak, or focal staining in poorly differentiated PAC and in patients with prior hormonal and/or radiation therapy. The purpose of this study is to characterize the cytopathology of metastatic PAC as it has not been documented in large series. Fifty cases of metastatic PAC with cytological specimens consisting of 41 fine-needle aspiration biopsies (FNAB), 6 pleural fluid aspirates, and 3 catheterized urine samples were reviewed and correlated with the surgical specimens and the clinical charts. Immunostaining for PSA, PAP, cytokeratin AE1/3, cytokeratin 7 (CK7), cytokeratin 20 (CK20), vimentin, and carcinoembryonic antigen (CEA) was done. Mean patient age was 77 +/- 8 yr; serum PSA, 4.1 +/- 2.3; and primary PAC Gleason score, 8.1 +/- 1.5. Cytologically, the specimens consisted of cell clusters or cell sheets with overlapping uniform hyperchromatic nuclei with or without nucleoli. Twelve cases were not reactive to PSA and PAP and 44 cases displayed negative immunoreactivity to both CK7 and CK20. Carcinoid-like lesions and small cell carcinomas were seen in 4 cases and were misdiagnosed as nonprostatic origin based on the following features: negative immunoreactivity to PSA and PAP with or without positive reactivity to CEA, and different histopathological features when compared with the primary PAC. In addition to the frequency of high-grade PAC, awareness of the negative immunoreactivity to PSA and PAP, the discrepancy in the histopathological patterns between the primary and secondary tumors, especially the frequent neuroendocrine differentiation, are helpful features for the diagnosis of metastases of prostatic origin.
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Affiliation(s)
- Kien T Mai
- Division of Anatomical Pathology, Department of Laboratory Medicine, The Ottawa Hospital, ON, Canada.
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Petraki CD, Papanastasiou PA, Karavana VN, Diamandis EP. Cellular distribution of human tissue kallikreins: immunohistochemical localization. Biol Chem 2006; 387:653-63. [PMID: 16800726 DOI: 10.1515/bc.2006.084] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We have studied the immunohistochemical expression (IE) of eight non-tissue-specific human kallikreins (hKs) (hK5, 6, 7, 10, 11, 12, 13, and 14) in different normal tissues. The IE was always cytoplasmic, showing a characteristic pattern in some tissues. Comparison of the IE of all hKs studied in the different tissues revealed no major differences, suggesting that they share a common mode of regulation. Furthermore, hKs were immunohistochemically revealed in a variety of tissues, indicating that no protein is tissue-specific (except for hK2 and hK3, which have tissue-restricted expression). In general, our results correspond well with data from RT-PCR and ELISA assays. Glandular epithelia constitute the main kallikrein IE sites, and the staining in their secretions confirms that these proteases are secreted. A variety of other tissues express the proteins as well. We have also immunohistochemically evaluated all the above hKs in several malignant tissues. Tumors arising from tissues expressing kallikreins tested positive. Corresponding to the IE in normal glandular tissues, most hKs were expressed in adenocarcinomas. The prognostic value of several hKs was studied in series of prostate, renal cell, colon and urothelial carcinomas.
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Affiliation(s)
- Constantina D Petraki
- Department of Pathology, Evangelismos Hospital, GR-10676 Athens, Greece, and Depament of Laboratory Medicine and Pathobiology, University of Toronto, Canada
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23
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Marques RB, Erkens-Schulze S, de Ridder CM, Hermans KG, Waltering K, Visakorpi T, Trapman J, Romijn JC, van Weerden WM, Jenster G. Androgen receptor modifications in prostate cancer cells upon long-termandrogen ablation and antiandrogen treatment. Int J Cancer 2005; 117:221-9. [PMID: 15900601 DOI: 10.1002/ijc.21201] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
To study the mechanisms whereby androgen-dependent tumors relapse in patients undergoing androgen blockade, we developed a novel progression model for prostate cancer. The PC346C cell line, established from a transurethral resection of a primary tumor, expresses wild-type (wt) androgen receptor (AR) and secretes prostate-specific antigen (PSA). Optimal proliferation of PC346C requires androgens and is inhibited by the antiandrogen hydroxyflutamide. Orthotopic injection in the dorsal-lateral prostate of castrated athymic nude mice did not produce tumors, whereas fast tumor growth occurred in sham-operated males. Three androgen-independent sublines were derived from PC346C upon long-term in vitro androgen deprivation: PC346DCC, PC346Flu1 and PC346Flu2. PC346DCC exhibited androgen-insensitive growth, which was not inhibited by flutamide. AR and PSA were detected at very low levels, coinciding with background AR activity in a reporter assay, which suggests that these cells have bypassed the AR pathway. PC346Flu1 and PC346Flu2 were derived by culture in steroid-stripped medium supplemented with hydroxyflutamide. PC346Flu1 strongly upregulated AR expression and showed 10-fold higher AR activation than the parental PC346C. PC346Flu1 proliferation was inhibited in vitro by R1881 at 0.1 nM concentration, consistent with a slower tumor growth rate in intact males than in castrated mice. PC346Flu2 carries the well-known T877A AR mutation, causing the receptor to become activated by diverse nonandrogenic ligands including hydroxyflutamide. Array-based comparative genomic hybridization revealed little change between the various PC346 lines. The common alterations include gain of chromosomes 1, 7 and 8q and loss of 13q, which are frequently found in prostate cancer. In conclusion, by in vitro hormone manipulations of a unique androgen-dependent cell line expressing wtAR, we successfully reproduced common AR modifications observed in hormone-refractory prostate cancer: downregulation, overexpression and mutation.
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Affiliation(s)
- Rute B Marques
- Department of Urology, Josephine Nefkens Institute, Erasmus Medical Center, Rotterdam, the Netherlands
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24
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Gelmini S, Tricarico C, Petrone L, Forti G, Amorosi A, Dedola GL, Serio M, Pazzagli M, Orlando C. Real-time RT-PCR for the measurement of prostate-specific antigen mRNA expression in benign hyperplasia and adenocarcinoma of prostate. Clin Chem Lab Med 2003; 41:261-5. [PMID: 12705330 DOI: 10.1515/cclm.2003.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Since PSA is supposed to play an active role in the progression of prostate cancer, we applied a quantitative RT-PCR to measure the absolute levels of prostate-specific antigen (PSA) mRNA expression in benign and malignant prostatic tissue. Consecutive fine needle prostate biopsy material from 59 patients (43 with prostate adenocarcinoma and 16 with benign prostatic hyperptrophy; BPH) was used for the measurement of PSA mRNA expression. In addition, we evaluated the correlation between PSA synthesis and PSA circulating levels in the same patients. The relationship between PSA mRNA expression and histological grade was also evaluated. PSA mRNA was measured with a quantitative RT-PCR, based on the use of fluorogenic probes, according to the TaqMan reaction system. The mRNA expression for PSA in prostate adenocarcinoma biopsies was highly variable, ranging from 2 x 10(4) to 2.1 x 10(8) molecules/microg total RNA with a mean value of 2.5 x 10(7) and significantly higher (p = 0.006) than that found in BPH patients (mean: 1.3 x 10(6) and range: 6.9 x 10(2) to 8 x 10(6)). The mRNA PSA expression in needle biopsy material did not seem to be related to PSA circulating levels in prostate cancer patients (r = 0.281), whereas in BPH patients the two parameters correlated significantly (r = 0.667, p < 0.01). A reduction of PSA mRNA expression in samples with a lower grade of differentiation (Gleason score 9-10) was also observed. Even though a mean increase of PSA expression was demonstrated in cancer samples, this small difference does not confirm a significant role of PSA proteolytic activity in prostate cancer progression. In conclusion, the assay procedure we proposed represents a reliable basis for more extensive study of PSA physiopathology in prostate cancer.
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Affiliation(s)
- Stefania Gelmini
- Department of Clinical Physiopathology, University of Florence, Florence, Italy
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Yousef GM, Diamandis EP. The new human tissue kallikrein gene family: structure, function, and association to disease. Endocr Rev 2001; 22:184-204. [PMID: 11294823 DOI: 10.1210/edrv.22.2.0424] [Citation(s) in RCA: 157] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The human tissue kallikrein gene family was, until recently, thought to consist of only three genes. Two of these human kallikreins, prostate-specific antigen and human glandular kallikrein 2, are currently used as valuable biomarkers of prostatic carcinoma. More recently, new kallikrein-like genes have been discovered. It is now clear that the human tissue kallikrein gene family contains at least 15 genes. All genes share important similarities, including mapping at the same chromosomal locus (19q13.4), significant homology at both the nucleotide and protein level, and similar genomic organization. All genes encode for putative serine proteases and most of them are regulated by steroid hormones. Recent data suggest that at least a few of these kallikrein genes are connected to malignancy. In this review, we summarize the recently accumulated knowledge on the human tissue kallikrein gene family, including gene and protein structure, predicted enzymatic activities, tissue expression, hormonal regulation, and alternative splicing. We further describe the reported associations of the human kallikreins with various human diseases and identify future avenues for research.
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Affiliation(s)
- G M Yousef
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, 600 University Avenue, Toronto, Ontario, Canada M5G 1X5
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26
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Magklara A, Scorilas A, Stephan C, Kristiansen GO, Hauptmann S, Jung K, Diamandis EP. Decreased concentrations of prostate-specific antigen and human glandular kallikrein 2 in malignant versus nonmalignant prostatic tissue. Urology 2000; 56:527-32. [PMID: 10962338 DOI: 10.1016/s0090-4295(00)00621-x] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES To study quantitatively the relative expression of human glandular kallikrein 2 (hK2) and prostate-specific antigen (PSA) in paired (from the same patient) cancerous and noncancerous prostatic tissue to evaluate whether these proteins are overexpressed or underexpressed in cancer. METHODS We studied 14 patients who underwent radical retropubic prostatectomy for prostate cancer. Cancerous and adjacent normal tissues were excised and then extracted to prepare cytosolic extracts. The extracts were analyzed for total protein, and for hK2 and PSA using sensitive and specific immunofluorometric procedures. RESULTS PSA was present in the prostatic extracts at about 50 to 100 times higher amounts than hK2. The correlation between PSA and hK2 values was good. Both prostate kallikreins were expressed more in noncancerous than in cancerous prostatic tissue. CONCLUSIONS Our results demonstrated that both PSA and hK2 are down-regulated in prostate cancer compared with noncancerous tissue. The degree of down-regulation was higher for PSA than for hK2. The mechanism and physiologic consequences of this down-regulation are unknown.
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Affiliation(s)
- A Magklara
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada
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27
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Jung K, Brux B, Lein M, Rudolph B, Kristiansen G, Hauptmann S, Schnorr D, Loening SA, Sinha P. Molecular Forms of Prostate-specific Antigen in Malignant and Benign Prostatic Tissue: Biochemical and Diagnostic Implications. Clin Chem 2000. [DOI: 10.1093/clinchem/46.1.47] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Background: Patients with prostate cancer (PCa) show a lower ratio of free prostate-specific antigen (fPSA) to total PSA (tPSA) in serum than patients with benign prostatic hyperplasia (BPH). The patterns of the intracellular PSA isoforms in malignant and benign prostatic tissue have been studied as potential molecular reasons for this phenomenon.
Methods: Prostatic tissue samples were obtained after cystoprostatectomy from patients with bladder cancer (n = 10), from BPH patients (transurethral resection of the prostate, n = 10; adenomectomy, n = 10), and from the cancerous and noncancerous parts of the same prostates removed surgically by prostatectomy because of PCa (n = 20). PSA pattern was characterized by gel filtration, immunoblotting, and immunoassays for tPSA, fPSA, α1-antichymotrypsin-PSA (ACT-PSA), and complexed PSA (Bayer Immuno 1 assay). Comparisons were made with the PSA concentrations in serum.
Results: The major portion of tPSA in all tissue samples was fPSA; complexed PSA forms were <2%. Samples from cystoprostatectomy patients had the lowest and those from adenomectomy patients the highest values of tPSA and fPSA. PSA concentrations were lower in cancerous than in the noncancerous parts of the prostate. No significant correlations were found between tumor stage or grade and the amounts of tPSA, fPSA, and ACT-PSA in tissue. Tissue PSA values were not correlated with the serum PSA concentrations nor with the ratios fPSA/tPSA and ACT-PSA/tPSA in sera.
Conclusions: The amounts of tPSA and the PSA isoforms in prostatic tissue explain neither the concentrations of tPSA and PSA isoforms in serum nor the behavior of the ratio fPSA/tPSA in patients with BPH and PCa.
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Affiliation(s)
| | | | | | - Birgit Rudolph
- Pathology, University Hospital Charité, Humboldt University, Schumannstrasse 20/21, D-10098 Berlin, Germany
| | - Glen Kristiansen
- Pathology, University Hospital Charité, Humboldt University, Schumannstrasse 20/21, D-10098 Berlin, Germany
| | - Steffen Hauptmann
- Pathology, University Hospital Charité, Humboldt University, Schumannstrasse 20/21, D-10098 Berlin, Germany
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Murphy DP, Pantuck AJ, Amenta PS, Das KM, Cummings KB, Keeney GL, Weiss RE. FEMALE URETHRAL ADENOCARCINOMA: IMMUNOHISTOCHEMICAL EVIDENCE OF MORE THAN 1 TISSUE OF ORIGIN. J Urol 1999; 161:1881-4. [PMID: 10332458 DOI: 10.1016/s0022-5347(05)68833-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE Urethral adenocarcinoma is a rare malignancy whose origin remains controversial. The monoclonal antibody mAbDas1 (formerly 7E12H12) was developed against a unique colonic epithelial epitope and is reactive in areas of intestinal metaplasia. Recently the antibody was shown to react in cystitis glandularis as well as adenocarcinoma of the bladder, suggesting that cystitis glandularis may be the precursor of bladder adenocarcinoma. We examined urethral adenocarcinomas and benign urethral specimens using mAbDas1 to determine whether it could provide insight into their histogenesis. MATERIALS AND METHODS Archival tissue from 12 cases of primary female urethral adenocarcinoma and urethral specimens of inflamed urethral mucosa, urethritis glandularis and transitional cell carcinoma was studied. Immunohistochemical analysis of formalin fixed, paraffin embedded archival tissue was done using the monoclonal antibody mAbDas1. Tumors were also evaluated with a prostate specific antigen (PSA) polyclonal antibody as previous studies have noted PSA reactivity in these tumors. RESULTS Of the 12 cases 9 were columnar/mucinous adenocarcinoma, 2 clear cell adenocarcinoma and 1 a cribriform pattern resembling adenocarcinoma of the prostate. All columnar/mucinous adenocarcinomas reacted positively (6 strongly and 3 focally) with the mAbDas1 antibody but did not react with the PSA antibody. The tumor with a cribriform pattern reacted strongly with PSA but did not react with mAbDas1. The 2 clear cell adenocarcinomas did not react with either antibody. The benign urethral specimens demonstrated strong reactivity to the mAbDas1 antibody in areas of urethritis glandularis but normal and inflamed urethral mucosa and transitional cell carcinoma did not react. CONCLUSIONS Primary adenocarcinoma of the female urethra arises from more than 1 tissue of origin. Columnar/mucinous adenocarcinomas of the female urethra and urethritis glandularis demonstrate consistent reactivity with the mAbDas1 antibody, suggesting that these tumors arise from glandular metaplasia analogous to the potential histogenesis previously demonstrated in the bladder. PSA reactivity occurred in 1 tumor with a cribriform pattern and likely represents origin from Skene's glands. Clear cell adenocarcinomas did not react with either antibody, suggesting a third possible pathway in the development of this rare subset of adenocarcinomas.
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Affiliation(s)
- D P Murphy
- Department of Medicine, Robert Wood Johnson Medical School, New Brunswick, New Jersey, USA
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29
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Pantuck AJ, Murphy DP, Amenta PS, Das KM, Cummings KB, Weiss RE. The monoclonal antibody 7E12H12 can differentiate primary adenocarcinoma of the bladder and prostate. BRITISH JOURNAL OF UROLOGY 1998; 82:426-30. [PMID: 9772883 DOI: 10.1046/j.1464-410x.1998.00755.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine if the monoclonal antibody 7E12H12, which reacts with a 40 kDa protein in normal human enterocytes and has been shown to be a marker for intestinal metaplasia and adenocarcinoma arising in the bladder, could assist in distinguishing prostatic, urachal and vesical adenocarcinoma, using a sensitive immunohistochemical assay. MATERIALS AND METHODS Fifteen primary prostatic adenocarcinomas and five adenocarcinomas of the urinary bladder were selected for a retrospective evaluation. The monoclonal antibody 7E12H12 (IgM isotype) was used in an immunoperoxidase assay to survey formalin-fixed, paraffin-embedded archival tissue specimens. RESULTS All vesical adenocarcinomas reacted positively with the antibody, regardless of grade; none of the 15 prostatic specimens reacted positively in either the benign or malignant glandular epithelium. CONCLUSION The monoclonal antibody 7E12H12 can differentiate primary adenocarcinoma of the bladder from secondary adenocarcinoma arising in the prostate and may be a useful tool in diagnostic pathology.
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Affiliation(s)
- A J Pantuck
- Division of Urology, Robert Wood Johnson Medical School, New Brunswick, NJ, USA
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30
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König JJ, Teubel W, Kamst E, Romijn JC, Schröder FH, Hagemeijer A. Cytogenetic analysis of 39 prostate carcinomas and evaluation of short-term tissue culture techniques. CANCER GENETICS AND CYTOGENETICS 1998; 101:116-22. [PMID: 9494612 DOI: 10.1016/s0165-4608(97)00224-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Karyotypic analysis was performed on 102 prostate cancer specimens which were obtained through radical prostatectomy, transurethral resection, or regional lymph node dissection. Short term tissue culture was applied in all cases. Of the media and growth factors evaluated, F12/DMEM, supplemented with 2% fetal calf serum, insulin, epidermal growth factor, hydrocortisone, and cholera toxin produced the largest increase of in vitro proliferation. Such in vitro cultured cells were all phenotypically acinar epithelial cells, the supposed targets for neoplastic transformation. Stromal cell growth appeared to be completely suppressed. Of the three culture techniques investigated, the method developed in Lund, Sweden, was the most successful: 11/15 cultures yielded metaphases and, in three of these, clonal aberrations were identified. All 39 karyotypes obtained essentially had a 46,XY karyotype with clonal aberrations (eight cases) and/or nonclonal aberrations (30 cases). Clonal structural aberrations involved 2p, 3q, 11p, 17p, and 21q. The clonal numerical aberrations found were: + 8, + dmin, and -Y. The most frequently observed nonclonal aberrations were 8p deletions (five cases) and loss of 6, 7, 8, 15, 17, 18, 21, and/or Y (> or = five cases). In summary, clonal aberrations were observed in 20% of the evaluable PC cell cultures, and nonclonal aberrations in 77%. So, although diploid cells without clonal abnormalities still had a growth advantage, under optimal conditions PC cells were able to proliferate in primary in vitro culture.
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Affiliation(s)
- J J König
- Department of Urology, Erasmus University, Rotterdam, The Netherlands
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31
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Affiliation(s)
- M J Wilson
- Research Service, VA Medical Center, Minneapolis, Minnesota 55417, USA
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Abstract
To determine the relationship of carcinoma of the prostate and cellular production of prostate-specific antigen, cytosol levels of PSA were measured in benign and malignant fresh prostate tissue harvested from radical prostatectomy specimens. Wedge biopsies were taken from benign (N = 21) and malignant (N = 74) prostate tissue and were immediately fixed in liquid nitrogen, and then homogenized and differentially centrifuged, and the cytosol fractions extracted. The remaining specimen was sent for routine pathologic assessment. The Hybritech methodology was used to measure the cytosol PSA and standard protein analysis was used for cytosol protein (CP) measurement. There was a significantly greater concentration of PSA in malignant tissue (P = 0.046). Also, when benign and malignant tissue were available from a single prostate (N = 17), these differences in cytosol PSA were even greater (P = 0.002). In addition, there was no significant difference when serum PSAs from the malignant tissue were ranked according to Gleason score and placed into three different histologic grades (i.e., Gleason scores 2-4, 5-6, and 7-10).
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Affiliation(s)
- D J Culkin
- Louisiana State University Medical Center, Shreveport
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Henttu P, Vihko P. Prostate-specific antigen and human glandular kallikrein: two kallikreins of the human prostate. Ann Med 1994; 26:157-64. [PMID: 7521173 DOI: 10.3109/07853899409147884] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Prostate-specific antigen (PSA) is a 33 kD protein synthesized in the epithelial cells of the prostate gland. It is a serine protease that belongs to the subgroup of kallikreins, among which it is very similar to a putative enzyme called human glandular kallikrein (hGK-1). Although the hGK-1 enzyme remains to be characterized in vivo, the hGK-1 gene is expressed in the same prostatic epithelial cells as the PSA gene. Expression of the PSA gene is under complex control and the steady-state level of PSA mRNA is increased by androgens, and decreased by epidermal growth factor and activation of protein kinase C. This suggests the existence of several regulatory elements within the cis-acting control elements of the PSA gene. As a seminal serine protease, PSA has been shown to digest the high molecular weight seminal vesicle protein, seminogelin. However, it is likely that this does not constitute the only natural substrate of PSA, as PSA has been shown to degrade insulin-like growth factor-binding protein-3. Serum PSA concentrations are frequently increased in patients with prostatic cancer, but this is also the case in patients with benign prostatic hyperplasia. Thus, PSA measurements alone are not useful as a screening tool for undiagnosed prostatic cancer. However, serum PSA concentrations can be successfully used together with other methods in diagnosing prostatic diseases and in monitoring the successfulness of treatments for prostatic cancer.
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Affiliation(s)
- P Henttu
- Biocenter Oulu, University of Oulu, Finland
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35
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Hakalahti L, Vihko P, Henttu P, Autio-Harmainen H, Soini Y, Vihko R. Evaluation of PAP and PSA gene expression in prostatic hyperplasia and prostatic carcinoma using northern-blot analyses, in situ hybridization and immunohistochemical stainings with monoclonal and bispecific antibodies. Int J Cancer 1993; 55:590-7. [PMID: 7691762 DOI: 10.1002/ijc.2910550413] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In this report we have investigated levels of prostatic acid phosphatase (PAP) and prostate-specific antigen (PSA) gene expression in prostatic carcinoma (Ca) and benign prostatic hyperplasia (BPH) specimens. Northern-blot analyses of total prostatic mRNA indicated that there was a tendency towards lower amounts of PAP mRNA and PSA mRNA in the Ca specimens than in the BPH specimens, although, because of the great variation in the expression levels of both mRNAs, these differences were not statistically significant. In situ hybridization analyses clearly showed that both PAP and PSA mRNAs were confined to the columnar epithelial cells and that stromal cells were devoid of these mRNAs. In addition, PAP and PSA mRNAs were more abundant in BPH tissue than in adjacent Ca tissue within the same specimen. The levels of PAP and PSA enzymes were analyzed immunohistochemically using a bispecific antibody having high affinity for both PAP and PSA, and the results were compared with those obtained using monoclonal anti-PAP and anti-PSA antibodies. All 3 antibodies stained only epithelial cells and BPH tissue consistently gave more intense staining than Ca tissue. Furthermore, the anti-PSA and the bispecific anti-PAP-PSA antibodies stained well or moderately differentiated Ca tissues more strongly than poorly differentiated Ca tissues. No PSA staining was detected in 3 and no PAP staining in 5 of the moderately or poorly differentiated carcinomas (grades II or III). Our results show that, in comparison with BPH tissue, prostatic Ca tissue is associated with significantly lower levels of mRNAs coding for the prostatic marker enzymes PAP and PSA, as well as with lower concentrations of these enzymes. Furthermore, dedifferentiation of prostate Ca is associated with a decrease in the level of intraprostatic PSA.
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36
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Garde SV, Sheth AR, Porter AT, Pienta KJ. A comparative study on expression of prostatic inhibin peptide, prostate acid phosphatase and prostate specific antigen in androgen independent human and rat prostate carcinoma cell lines. Cancer Lett 1993; 70:159-66. [PMID: 7689036 DOI: 10.1016/0304-3835(93)90226-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Prostatic inhibin peptide (PIP), consisting of 94 amino-acid residues is synthesized and secreted by the prostate gland. Previous studies on immunohistochemical localization of PIP in primary prostatic tumor and their metastasis, have documented the value of this peptide as a tumor marker for diagnosis of prostate cancer (PCa). The present study was undertaken to compare the expression of PIP with that of prostate specific antigen (PSA) and prostatic acid phosphatase (PAP) in androgen independent human PCa cell lines (PC-3, DU-145 and TSU-Prl) by immunoperoxidase technique. The results of the study indicated that the staining for PIP was more intense than that of PSA and PAP. The PSA staining was either weakly positive (PC-3) or totally absent (TSU-Prl and DU-145) while PAP staining was intense in PC-3 and moderate in the other two human cell lines. The intense staining observed for PIP in all of the androgen independent cell lines suggests that the synthesis and secretion of PIP is not primarily dependent on androgens. Furthermore, expression of these markers in Dunning rat cultured adenocarcinoma cell lines and tumors were studied. Positive staining for all three human tumor associated antigens (PIP, PSA and PAP) cross-reacting with the Dunning rat PCa cell lines and the tumors, suggest the suitability of this model for preclinical screening of various therapeutic agents.
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Affiliation(s)
- S V Garde
- Meyer L. Prentis Comprehensive Cancer Center, Wayne State University School of Medicine, Detroit, MI 48201
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Allsbrook WC, Simms WW, Steinsapir J. Reply. Hum Pathol 1993. [DOI: 10.1016/0046-8177(93)90023-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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38
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Sakai H, Yogi Y, Minami Y, Yushita Y, Kanetake H, Saito Y. Prostate specific antigen and prostatic acid phosphatase immunoreactivity as prognostic indicators of advanced prostatic carcinoma. J Urol 1993; 149:1020-3. [PMID: 7683340 DOI: 10.1016/s0022-5347(17)36285-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
To determine whether the prostate specific antigen (PSA) and prostatic acid phosphatase (PAP) immunoreactivities in prostatic carcinoma are reliable prognostic factors, the PSA and PAP immunohistochemical distribution was examined in needle biopsy specimens of 80 patients with advanced prostatic carcinoma. Our results indicated a higher cancer-specific survival rate in patients with a greater PSA or PAP immunostaining. Furthermore, a multivariate analysis of possible prognostic factors, that is patient age, clinical stage, Gleason score, serum PAP, PSA and PAP immunostaining scores, and the initial treatment, has confirmed that the difference in PAP immunoreactivity is the most important prognostic factor (p < 0.01) for advanced prostatic carcinoma, with the Gleason score (p = 0.06), clinical stage (p = 0.09) and PSA immunoreactivity (p = 0.48) being the second, third and fifth prognostic factors, respectively.
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Affiliation(s)
- H Sakai
- Department of Urology, Nagasaki University School of Medicine, Japan
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Affiliation(s)
- D A Arvan
- Department of Pathology, University of Rochester Medical Center, NY
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40
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Abstract
Histochemistry, including immunohistochemistry, is helpful to the practicing pathologist in the diagnosis of prostatic carcinoma. Of equal importance, histochemistry is being increasingly used to study the pathobiology of the prostate. This article reviews these histochemical techniques and their applications.
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Affiliation(s)
- W C Allsbrook
- Department of Pathology, School of Medicine, Medical College of Georgia, Augusta 30912-3605
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Faber PW, King A, van Rooij HC, Brinkmann AO, de Both NJ, Trapman J. The mouse androgen receptor. Functional analysis of the protein and characterization of the gene. Biochem J 1991; 278 ( Pt 1):269-78. [PMID: 1883336 PMCID: PMC1151478 DOI: 10.1042/bj2780269] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Screening a mouse genomic DNA library with human androgen-receptor (hAR) cDNA probes resulted in the isolation and characterization of eight genomic fragments that contain the eight exons of the mouse androgen-receptor (mAR) gene. On the basis of similarity to the hAR gene, the nucleotide sequences of the protein-coding parts of the exons as well as the sequences of the intron/exon boundaries were determined. An open reading frame (ORF) of 2697 nucleotides, which can encode an 899-amino-acid protein, could be predicted. The structure of the mAR ORF was confirmed by sequence analysis of mAR cDNA fragments, which were obtained by PCR amplification of mouse testis cDNA, using mAR specific primers. A eukaryotic mAR expression vector was constructed and mAR was transiently expressed in COS-1 cells. The expressed protein was shown by Western blotting to be identical in size with the native mAR. Co-transfection of HeLa cells with the mAR expression plasmid and an androgen-responsive chloramphenicol acetyltransferase (CAT) reporter-gene construct showed mAR to be able to trans-activate the androgen-responsive promoter in a ligand-dependent manner. Transcription-initiation sites of the mAR gene were identified by S1-nuclease protection experiments, and the functional activity of the promoter region was determined by transient expression of mAR promoter-CAT-reporter-gene constructs in HeLa cells. Structural analysis revealed the promoter of the mAR gene to be devoid of TATA/CCAAT elements. In addition, the promoter region is not remarkably (G + C)-rich. Potential promoter elements consist of a consensus Sp1 binding sequence and a homopurine stretch. The polyadenylation sites of mAR mRNA were identified by sequence similarity to the corresponding sites in the hAR mRNA.
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Affiliation(s)
- P W Faber
- Department of Pathology, Erasmus University, Rotterdam, The Netherlands
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