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Maillet D, Allioli N, Péron J, Plesa A, Decaussin-Petrucci M, Tartas S, Sajous C, Ruffion A, Crouzet S, Freyer G, Vlaeminck-Guillem V. Her2 Expression in Circulating Tumor Cells Is Associated with Poor Outcomes in Patients with Metastatic Castration-Resistant Prostate Cancer. Cancers (Basel) 2021; 13:cancers13236014. [PMID: 34885125 PMCID: PMC8656805 DOI: 10.3390/cancers13236014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 11/16/2022] Open
Abstract
HER2-dependent signaling may support the development of metastatic castration-resistant prostate cancer (mCRPC) by activating androgen receptor signaling through ligand-independent mechanisms. From 41 mCRPC patients (including 31 treated with Androgen Receptor Signaling Inhibitors [ARSI]), Circulating Tumor Cells (CTCs) were prospectively enriched with AdnaTest platform and analyzed with a multiplexed assay for HER2 and AR-V7 mRNA expression. Then, we evaluated the impact of HER2 expression on PSA-response, Progression Free Survival (PFS) and Overall Survival (OS). HER2 expression was detected in CTCs of 26 patients (63%). Although PSA response was similar regardless of HER2 status, patients with HER2 positive CTCs had shorter PSA-PFS (median: 6.2 months versus 13.0 months, p = 0.034) and radiological-PFS (6.8 months versus 25.6 months, p = 0.022) than patients without HER2 expression. HER2 expression was also associated with a shorter OS (22.7 months versus not reached, p = 0.05). In patients treated with ARSI, multivariate analyses revealed that the prognostic impact of HER2 status on PSA-PFS was independent of AR-V7 expression and of the detection of CTCs by an AdnaTest. We showed for the first time the poor prognostic value of HER2 expression in CTCs from patients with mCRPC. The therapeutic interest of targeting this actionable pathway remains to be explored.
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Affiliation(s)
- Denis Maillet
- Service d’Oncologie Médicale, Institut de Cancérologie des Hospices Civils de Lyon, 69495 Pierre Bénite, France; (J.P.); (A.P.); (M.D.-P.); (S.T.); (C.S.); (G.F.)
- Centre de Recherche en Cancérologie de Lyon, INSERM 1052 CNRS UMR5286, Centre Léon Bérard, Université Claude Bernard Lyon 1, 69373 Lyon, France;
- Centre d’Innovation en Cancérologie de Lyon (CICLY), UR3738, Université Claude Bernard Lyon-1, 69921 Oullins, France; (N.A.); (A.R.)
- Correspondence: ; Tel.: +33-(0)4-788-643-85
| | - Nathalie Allioli
- Centre d’Innovation en Cancérologie de Lyon (CICLY), UR3738, Université Claude Bernard Lyon-1, 69921 Oullins, France; (N.A.); (A.R.)
- Institut des Sciences Pharmaceutiques et Biologiques, Faculté de Pharmacie, Université Claude Bernard Lyon1, 69008 Lyon, France
| | - Julien Péron
- Service d’Oncologie Médicale, Institut de Cancérologie des Hospices Civils de Lyon, 69495 Pierre Bénite, France; (J.P.); (A.P.); (M.D.-P.); (S.T.); (C.S.); (G.F.)
- Service de Biostatistique et Bioinformatique, Hospices Civils de Lyon, 69495 Pierre Bénite, France
- Laboratoire de Biométrie et Biologie Evolutive, Equipe Biostatistique-Santé, CNRS UMR 5558, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France
| | - Adriana Plesa
- Service d’Oncologie Médicale, Institut de Cancérologie des Hospices Civils de Lyon, 69495 Pierre Bénite, France; (J.P.); (A.P.); (M.D.-P.); (S.T.); (C.S.); (G.F.)
- Service d’Hématologie Biologique, Centre Hospitalier Lyon Sud, 69495 Pierre Bénite, France
| | - Myriam Decaussin-Petrucci
- Service d’Oncologie Médicale, Institut de Cancérologie des Hospices Civils de Lyon, 69495 Pierre Bénite, France; (J.P.); (A.P.); (M.D.-P.); (S.T.); (C.S.); (G.F.)
- Centre d’Innovation en Cancérologie de Lyon (CICLY), UR3738, Université Claude Bernard Lyon-1, 69921 Oullins, France; (N.A.); (A.R.)
- Faculté de Médecine et de Maïeutique Lyon-Sud-Charles Mérieux, Université Claude Bernard Lyon 1, 69921 Oullins, France
- Service d’Anatomie et de Cytologie Pathologiques, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, 69495 Pierre-Bénite, France
| | - Sophie Tartas
- Service d’Oncologie Médicale, Institut de Cancérologie des Hospices Civils de Lyon, 69495 Pierre Bénite, France; (J.P.); (A.P.); (M.D.-P.); (S.T.); (C.S.); (G.F.)
| | - Christophe Sajous
- Service d’Oncologie Médicale, Institut de Cancérologie des Hospices Civils de Lyon, 69495 Pierre Bénite, France; (J.P.); (A.P.); (M.D.-P.); (S.T.); (C.S.); (G.F.)
| | - Alain Ruffion
- Centre d’Innovation en Cancérologie de Lyon (CICLY), UR3738, Université Claude Bernard Lyon-1, 69921 Oullins, France; (N.A.); (A.R.)
- Faculté de Médecine et de Maïeutique Lyon-Sud-Charles Mérieux, Université Claude Bernard Lyon 1, 69921 Oullins, France
- Service d’Urologie, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, 69495 Pierre-Bénite, France
| | - Sébastien Crouzet
- Service d’Urologie, Hôpital Edouard Herriot, Hospices Civils de Lyon, 69003 Lyon, France;
- Faculté de Médecine Lyon Est, Université Claude Bernard Lyon 1, 69003 Lyon, France
| | - Gilles Freyer
- Service d’Oncologie Médicale, Institut de Cancérologie des Hospices Civils de Lyon, 69495 Pierre Bénite, France; (J.P.); (A.P.); (M.D.-P.); (S.T.); (C.S.); (G.F.)
- Faculté de Médecine et de Maïeutique Lyon-Sud-Charles Mérieux, Université Claude Bernard Lyon 1, 69921 Oullins, France
| | - Virginie Vlaeminck-Guillem
- Centre de Recherche en Cancérologie de Lyon, INSERM 1052 CNRS UMR5286, Centre Léon Bérard, Université Claude Bernard Lyon 1, 69373 Lyon, France;
- Faculté de Médecine Lyon Est, Université Claude Bernard Lyon 1, 69003 Lyon, France
- Service de Biochimie Biologie Moléculaire Sud, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, 69495 Pierre-Bénite, France
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Klusa D, Lohaus F, Furesi G, Rauner M, Benešová M, Krause M, Kurth I, Peitzsch C. Metastatic Spread in Prostate Cancer Patients Influencing Radiotherapy Response. Front Oncol 2021; 10:627379. [PMID: 33747899 PMCID: PMC7971112 DOI: 10.3389/fonc.2020.627379] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 12/30/2020] [Indexed: 12/18/2022] Open
Abstract
Radiotherapy and surgery are curative treatment options for localized prostate cancer (PCa) with a 5-year survival rate of nearly 100%. Once PCa cells spread into distant organs, such as bone, the overall survival rate of patients drops dramatically. The metastatic cascade and organotropism of PCa cells are regulated by different cellular subtypes, organ microenvironment, and their interactions. This cross-talk leads to pre-metastatic niche formation that releases chemo-attractive factors enforcing the formation of distant metastasis. Biological characteristics of PCa metastasis impacting on metastatic sites, burden, and latency is of clinical relevance. Therefore, the implementation of modern hybrid imaging technologies into clinical routine increased the sensitivity to detect metastases at earlier stages. This enlarged the number of PCa patients diagnosed with a limited number of metastases, summarized as oligometastatic disease. These patients can be treated with androgen deprivation in combination with local-ablative radiotherapy or radiopharmaceuticals directed to metastatic sites. Unfortunately, the number of patients with disease recurrence is high due to the enormous heterogeneity within the oligometastatic patient population and the lack of available biomarkers with predictive potential for metastasis-directed radiotherapy. Another, so far unmet clinical need is the diagnosis of minimal residual disease before onset of clinical manifestation and/or early relapse after initial therapy. Here, monitoring of circulating and disseminating tumor cells in PCa patients during the course of radiotherapy may give us novel insight into how metastatic spread is influenced by radiotherapy and vice versa. In summary, this review critically compares current clinical concepts for metastatic PCa patients and discuss the implementation of recent preclinical findings improving our understanding of metastatic dissemination and radiotherapy resistance into standard of care.
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Affiliation(s)
- Daria Klusa
- National Center for Tumor Diseases (NCT), Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Fabian Lohaus
- Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Giulia Furesi
- Helmholtz-Zentrum Dresden—Rossendorf (HZDR), Dresden,Germany
| | - Martina Rauner
- Helmholtz-Zentrum Dresden—Rossendorf (HZDR), Dresden,Germany
| | | | - Mechthild Krause
- National Center for Tumor Diseases (NCT), Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Ina Kurth
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Claudia Peitzsch
- National Center for Tumor Diseases (NCT), Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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3
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Fantinato AP, Tobias-Machado M, Fonseca F, Pinto JLF, Wroclawski ML, Wroclawski E, Verotti M, Del Giglio A. Her2/neu Expression by Reverse Transcriptase-Polymerase Chain Reaction in the Peripheral Blood of Prostate Cancer Patients. TUMORI JOURNAL 2018; 93:467-72. [DOI: 10.1177/030089160709300510] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background/Aims Evaluation of Her2/neu expression in the peripheral blood mononuclear cell fraction of prostate cancer patients by RT-PCR may afford an opportunity for the detection of circulating tumor cells and thus serve as a marker of micrometastatic disease. Methods We studied Her2/neu expression by reverse transcriptase-polymerase chain reaction in peripheral blood mononuclear cell fraction samples of 21 controls and serially in 43 patients with prostate cancer. Results None of the 21 controls expressed Her2/neu whereas 23.25% (95% CI, 11.75–38.63) of the patients were positive at entry into the study, and 65.11% (95% CI, 49.07–78.99) of them had at least one positive result during the follow-up period. Her2/neu positivity at study entry did not correlate significantly with PSA level, Gleason score, clinical stage or time to PSA progression. When we analyzed only patients with advanced disease, we observed a trend towards a shorter time to PSA progression in patients with at least one positive Her2/neu result during the follow-up (log-rank test, P = 0.08). Conclusions We conclude that Her2/neu expression in the peripheral blood mononuclear cell fraction of prostate cancer patients is frequent and therefore this assay may potentially be useful to detect the presence of micrometastatic disease in men with prostate cancer and for monitoring patients enrolled in trastuzumab-based therapeutic protocols.
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Affiliation(s)
- Ana Paula Fantinato
- Disciplina de Hematologia e Oncologia da Faculdade de Medicina da Fundação ABC, São Paulo
- Postgraduate student from Disciplina de clínica Médica UNIFESP, São Paulo
| | - Marcos Tobias-Machado
- Disciplina de Urologia da Faculdade de Medicina da Fundação ABC, São Paulo
- Postgraduate student from Disciplina de Hematologia e Hemoterapia da FMUSP, São Paulo, Brazil
| | - Fernando Fonseca
- Disciplina de Urologia da Faculdade de Medicina da Fundação ABC, São Paulo
| | - Jorge Luiz Freire Pinto
- Disciplina de Hematologia e Oncologia da Faculdade de Medicina da Fundação ABC, São Paulo
- Postgraduate student from Disciplina de clínica Médica UNIFESP, São Paulo
| | | | - Eric Wroclawski
- Disciplina de Urologia da Faculdade de Medicina da Fundação ABC, São Paulo
| | - Maurício Verotti
- Disciplina de Urologia da Faculdade de Medicina da Fundação ABC, São Paulo
| | - Auro Del Giglio
- Disciplina de Hematologia e Oncologia da Faculdade de Medicina da Fundação ABC, São Paulo
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Alvarez Cubero MJ, Lorente JA, Robles-Fernandez I, Rodriguez-Martinez A, Puche JL, Serrano MJ. Circulating Tumor Cells: Markers and Methodologies for Enrichment and Detection. Methods Mol Biol 2017; 1634:283-303. [PMID: 28819860 DOI: 10.1007/978-1-4939-7144-2_24] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Cancer is a leading cause of disease worldwide; however, nowadays many points of its initiation processes are unknown. In this chapter, we are focusing on the role of liquid biopsies in cancer detection and progression. CTCs are one of the main components of liquid biopsies, they represent a subset of tumor cells that have acquired the ability to disseminate from the primary tumor and intravasate to the circulatory system. The greatest challenge in the detection of CTCs is their rarity in the blood. Human blood consists of white blood cells (5-10 × 106/mL), red blood cells (5-9 × 109/mL), and platelets (2.5-4 × 108/mL); very few CTCs will be present even in patients with known metastatic disease, with often less than one CTC per mL of blood. CTCs are found in frequencies on the order of 1-10 CTCs per mL of whole blood in patients with metastatic disease, and it is reduced in half for non-metastatic stages. Therefore, accurate methodologies for their capture and analysis are really important. The main aim of the present chapter is to describe different methodologies for CTCs capturing and analysis.
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MESH Headings
- Antibodies, Monoclonal/chemistry
- Antibodies, Monoclonal/metabolism
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/immunology
- Biomarkers, Tumor/metabolism
- Cell Count
- Cell Line, Tumor
- Cell Separation/instrumentation
- Cell Separation/methods
- Cell Survival
- Centrifugation, Density Gradient/methods
- Epithelial Cell Adhesion Molecule/genetics
- Epithelial Cell Adhesion Molecule/immunology
- Epithelial Cell Adhesion Molecule/metabolism
- Epithelial-Mesenchymal Transition/genetics
- Equipment Design
- ErbB Receptors/genetics
- ErbB Receptors/immunology
- ErbB Receptors/metabolism
- Ficoll/chemistry
- Fluorescent Dyes/chemistry
- Humans
- Immunoassay
- Keratins/genetics
- Keratins/immunology
- Keratins/metabolism
- Microfluidic Analytical Techniques/instrumentation
- Neoplasms/blood
- Neoplasms/diagnosis
- Neoplasms/immunology
- Neoplasms/pathology
- Neoplastic Cells, Circulating/immunology
- Neoplastic Cells, Circulating/metabolism
- Neoplastic Cells, Circulating/pathology
- Protein Binding
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Affiliation(s)
- M J Alvarez Cubero
- GENYO. Centre for Genomics and Oncological Research, Pfizer, University of Granada, Andalusian Regional Government, Av. de la Ilustración 114, 18016, Granada, Spain.
| | - J A Lorente
- GENYO. Centre for Genomics and Oncological Research, Pfizer, University of Granada, Andalusian Regional Government, Av. de la Ilustración 114, 18016, Granada, Spain
- Laboratory of Genetic Identification, University of Granada-Dept. of Legal Medicine - Faculty of Medicine, Granada, 18016, Spain
| | - I Robles-Fernandez
- GENYO. Centre for Genomics and Oncological Research, Pfizer, University of Granada, Andalusian Regional Government, Av. de la Ilustración 114, 18016, Granada, Spain
| | - A Rodriguez-Martinez
- GENYO. Centre for Genomics and Oncological Research, Pfizer, University of Granada, Andalusian Regional Government, Av. de la Ilustración 114, 18016, Granada, Spain
- Laboratory of Genetic Identification, University of Granada-Dept. of Legal Medicine - Faculty of Medicine, Granada, 18016, Spain
| | - J L Puche
- Integral Oncology Division, Clinical University Hospitals of Granada, Av. de las Fuerzas Armadas, 2, 18014, Granada, Spain
| | - M J Serrano
- GENYO. Centre for Genomics and Oncological Research, Pfizer, University of Granada, Andalusian Regional Government, Av. de la Ilustración 114, 18016, Granada, Spain
- Integral Oncology Division, Clinical University Hospitals of Granada, Av. de las Fuerzas Armadas, 2, 18014, Granada, Spain
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5
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Carlsson J, Shen L, Xiang J, Xu J, Wei Q. Tendencies for higher co-expression of EGFR and HER2 and downregulation of HER3 in prostate cancer lymph node metastases compared with corresponding primary tumors. Oncol Lett 2012; 5:208-214. [PMID: 23255921 DOI: 10.3892/ol.2012.996] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 08/08/2012] [Indexed: 01/02/2023] Open
Abstract
The epidermal growth factor receptor (EGFR) family members are potential targets for therapy using extra-cellular domain receptor binding agents, such as the antibodies trastuzumab and cetuximab, or antibodies labeled with therapeutically useful radionuclides or toxins. This is especially the case when the tumor cells are resistant to chemotherapy and tyrosine kinase inhibitors. Studies concerning the expression of these receptors in prostate cancer vary in the literature, possibly due to differences in patient inclusion, sample preparations and scoring criteria. In our study, EGFR, HER2 and HER3 expression was analyzed in prostate cancer samples from primary tumors and corresponding lymph node metastases from 12 patients. The expression of HER2 and EGFR was scored from immunohistochemical preparations and the HercepTest criteria (0, 1+, 2+ or 3+), while HER3 expression was scored as no, weak or strong staining. There were 5 EGFR-positive (2+ or 3+) primary tumors and 6 EGFR-positive lymph node metastases, and there was EGFR upregulation in one metastasis. Only 4 of the 12 patients had marked HER2 expression (2+ or 3+) in their primary tumors and there was one downregulation and 5 cases of upregulation in the metastases. Thus, a total of 8 out of 12 analyzed metastases were HER2-positive. Of the 12 primary tumors, 9 expressed HER3 while only 2 of the lymph node metastases expressed recognizable HER3 staining, so 7 metastases appeared to have downregulated HER3 expression. In one of the primary tumors there was positive co-expression of EGFR and HER2, while this co-expression was observed in 4 of the metastases. Thus, there were tendencies for upregulation of HER2, increased co-expression of EGFR and HER2 and downregulation of HER3 in the prostate cancer lymph node metastases in comparison to the primary tumors. The results are encouraging for studies involving more patients. Possible strategies for EGFR- and HER2-targeted therapy are briefly discussed in the present study, especially with regard to the expression and co-expression of EGFR and HER2 in metastases.
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Affiliation(s)
- J Carlsson
- Unit of Biomedical Radiation Science, Department of Radiology, Oncology and Radiation Science, Rudbeck Laboratory, Uppsala University, SE-751 85 Uppsala, Sweden
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Zieglschmid V, Hollmann C, Böcher O. DETECTION OF DISSEMINATED TUMOR CELLS IN PERIPHERAL BLOOD. Crit Rev Clin Lab Sci 2008; 42:155-96. [PMID: 15941083 DOI: 10.1080/10408360590913696] [Citation(s) in RCA: 180] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Metastases are the major cause of cancer-related deaths in patients with solid epithelial malignancies, such as breast, colorectal and prostate carcinomas. Hematogenous spreading of tumor cells from a primary tumor can be considered as a crucial step in the metastasis cascade leading eventually to the formation of clinically manifest metastases. Consequently, as shown in recent studies, the detection of disseminated tumor cells in peripheral blood might be of clinical relevance with respect to individual patient prognosis and staging or monitoring of therapy. However, the rarity of disseminated tumor cells in peripheral blood renders the application of sensitive techniques mandatory for their detection. The emergence of highly sophisticated reverse transciptase-polymerase chain reaction (RT-PCR) assays, combining a preanalytical enrichment step with the assessment of multiple molecular tumor markers expressed in disseminated tumor cells, provides a powerful tool in detecting disseminated tumor cells with high sensitivity and specificity. This review will discuss currently used tumor markers as well as experimental means to enhance the sensitivity and specificity of RT-PCR assays to detect disseminated tumor cells in the peripheral blood of patients with breast, colorectal, and prostate cancers, and their clinical relevance assessed in recent studies.
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Mao X, Shaw G, James SY, Purkis P, Kudahetti SC, Tsigani T, Kia S, Young BD, Oliver RTD, Berney D, Prowse DM, Lu YJ. Detection of TMPRSS2:ERG fusion gene in circulating prostate cancer cells. Asian J Androl 2008; 10:467-73. [PMID: 18385909 DOI: 10.1111/j.1745-7262.2008.00401.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
AIM To investigate the existence of TMPRSS2:ERG fusion gene in circulating tumor cells (CTC) from prostate cancer patients and its potential in monitoring tumor metastasis. METHODS We analyzed the frequency of TMPRSS2:ERG and TMPRSS2:ETV1 transcripts in 27 prostate cancer biopsies from prostatectomies, and TMPRSS2:ERG transcripts in CTC isolated from 15 patients with advanced androgen independent disease using reverse transcription polymerase chain reaction (RT-PCR). Fluorescence in situ hybridization (FISH) was applied to analyze the genomic truncation of ERG, which is the result of TMPRSS2:ERG fusion in 10 of the 15 CTC samples. RESULTS TMPRSS2:ERG transcripts were found in 44% of our samples, but we did not detect expression of TMPRSS2:ETV1. Using FISH analysis we detected chromosomal rearrangements affecting the ERG gene in 6 of 10 CTC samples, including 1 case with associated TMPRSS2:ERG fusion at the primary site. However, TMPRSS2:ERG transcripts were not detected in any of the 15 CTC samples, including the 10 cases analyzed by FISH. CONCLUSION Although further study is required to address the association between TMPRSS2:ERG fusion and prostate cancer metastasis, detection of genomic truncation of the ERG gene by FISH analysis could be useful for monitoring the appearance of CTC and the potential for prostate cancer metastasis.
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Affiliation(s)
- Xueying Mao
- Medical Oncology Centre, Cancer Institute, Department of Histopathology and Morbid Anatomy, Barts and London School of Medicine and Dentistry, Queen Mary, University of London, Charterhouse Square, London EC1M 6BQ, UK
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Cho KS, Oh HY, Lee EJ, Hong SJ. Identification of enhancer of zeste homolog 2 expression in peripheral circulating tumor cells in metastatic prostate cancer patients: a preliminary study. Yonsei Med J 2007; 48:1009-14. [PMID: 18159594 PMCID: PMC2628187 DOI: 10.3349/ymj.2007.48.6.1009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
PURPOSE Enhancer of zeste homolog 2 (EZH2), a kind of transcriptional repressor, is reportedly over-expressed in metastatic prostate cancer. In this study, we analyzed EZH2 mRNA in circulating tumor cells (CTCs) in peripheral blood as a biomarker in patients with metastatic prostate cancer. PATIENTS AND METHODS Ber-EP4 coated immunomagnetic beads were used to harvest CTCs, and mRNA was isolated by oligo- dT conjugated immunomagnetic beads. Reverse transcriptase- polymerase chain reaction for EZH2 mRNA was performed and the expression density was measured. The sensitivity of this test for detection of EZH2 mRNA was determined by serial dilutions of a human prostate cancer cell line. Blood samples were collected from 20 patients each with metastatic or localized prostate cancer and 10 healthy volunteers. RESULTS Sensitivity experiments showed that the test was highly sensitive as it could detect 10 tumor cells per 5 mL. EZH2 mRNA expression was obtained from peripheral blood samples of patients and control subjects. EZH2 mRNA expression density in the metastatic prostate cancer group was significantly higher than in the control (p=0.023) and localized prostate cancer groups (p=0.019). There was no difference between the control and localized prostate cancer groups (p > 0.05). CONCLUSION EZH2 mRNA expression in circulating epithelial cells represents a promising marker for detecting early metastasis in prostate cancer. However, more specific and sensitive techniques for detection of CTCs are needed to avoid mononuclear cell contamination.
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Affiliation(s)
- Kang Su Cho
- Department of Urology, Urological Science Institute, Brain Korea 21 Project for Medical Science, College of Medicin, Korea
| | - Hea Young Oh
- Department of Urology, Urological Science Institute, Brain Korea 21 Project for Medical Science, College of Medicin, Korea
- Department of Food and Nutrition, Yonsei University, Seoul, Korea
| | - Eun Jin Lee
- Department of Urology, Urological Science Institute, Brain Korea 21 Project for Medical Science, College of Medicin, Korea
| | - Sung Joon Hong
- Department of Urology, Urological Science Institute, Brain Korea 21 Project for Medical Science, College of Medicin, Korea
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Fizazi K, Morat L, Chauveinc L, Prapotnich D, De Crevoisier R, Escudier B, Cathelineau X, Rozet F, Vallancien G, Sabatier L, Soria JC. High detection rate of circulating tumor cells in blood of patients with prostate cancer using telomerase activity. Ann Oncol 2007; 18:518-21. [PMID: 17322541 DOI: 10.1093/annonc/mdl419] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Circulating tumor cells (CTCs) cannot be readily detected with currently available methods in the majority of patients with prostate cancer. Telomerase activation, one of the major immortalization events, is found in most cases of prostate cancer. We attempted to develop a method using telomerase activity to isolate CTCs in patients with prostate cancer. PATIENTS AND METHODS Peripheral blood mononuclear cells (PBMCs) were isolated from whole blood using Ficoll-Hypaque. Immunomagnetic beads coated with an epithelial cell-specific antigen antibody (BerEP4) were used to harvest epithelial cells from PBMCs. Telomerase activity was detected in harvested epithelial cells using the telomerase-PCR-enzyme-linked immunosorbent assay method. RESULTS Blood samples from 107 patients with prostate cancer were studied. CTCs were detected in 19 of 24 (79%) patients with advanced prostate cancer. In contrast, CTCs were not detected in blood samples from 22 healthy male volunteers. CTCs were even identified in patients with an undetectable (<0.1 ng/ml) serum prostate-specific antigen (PSA). CTCs were detected in 55 of 70 (79%) patients with localized prostate cancer before radical prostatectomy (n = 30) or brachytherapy (n = 40). CTCs were also detected in 3 of 13 patients (23%) with an undetectable serum PSA measured at least 1 year after radical prostatectomy, which is consistent with the expected relapse rate in this setting. CONCLUSION CTCs can be detected using telomerase activity in a large majority and a wide variety of patients with prostate cancer, including those with localized disease.
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Affiliation(s)
- K Fizazi
- Department of Medicine, Institut Gustave Roussy, Villejuif, France.
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Benbrahim-Tallaa L, Webber MM, Waalkes MP. Mechanisms of acquired androgen independence during arsenic-induced malignant transformation of human prostate epithelial cells. ENVIRONMENTAL HEALTH PERSPECTIVES 2007; 115:243-7. [PMID: 17384772 PMCID: PMC1817693 DOI: 10.1289/ehp.9630] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2006] [Accepted: 11/20/2006] [Indexed: 05/14/2023]
Abstract
BACKGROUND Prostate cancer progression often occurs with overexpression of growth factors and receptors, many of which engage the Ras/mitogen-activated protein MAP kinase (MAPK) pathway. OBJECTIVES In this study we used arsenic-transformed human prostate epithelial cells, which also show androgen-independent growth, to study the possibility that chronic activation of Ras/MAPK signaling may contribute to arsenic-induced prostate cancer progression. METHODS Control and chronic arsenic-transformed prostate epithelial cells (CAsE-PE) were compared for Ras/MAPK signaling capacities using reverse transcription-polymerase chain reaction and Western blot analyses. RESULTS We found activation of HER-2/neu oncogene in transformed CAsE-PE cells, providing molecular evidence of androgen independence in the transformed cells. CAsE-PE cells displayed constitutively increased expression of unmutated K-Ras (6-fold), and the downstream MAP kinases A-Raf and B-Raf (2.2-fold and 3.2-fold, respectively). There was also increased expression of phosphorylated MEK1/2 and Elk1 in the transformant cells. The MEK1/2 inhibitor, U0126, blocked PSA overexpression in CAsE-PE cells. CONCLUSION Thus, arsenic-induced malignant transformation and acquired androgen independence are linked to Ras signaling activation in human prostate epithelial cells. Chronic activation of this pathway can sensitize the androgen receptor to subphysiologic levels of androgen. This may be important in arsenic carcinogenesis and provide a mechanism that may be common for prostate cancer progression driven by diverse agents.
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Affiliation(s)
- Lamia Benbrahim-Tallaa
- Inorganic Carcinogenesis Section, Laboratory of Comparative Carcinogenesis, National Cancer Institute at the National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA
| | - Mukta M. Webber
- Department of Medicine and
- Department of Zoology, Michigan State University, East Lansing, Michigan, USA
| | - Michael P. Waalkes
- Inorganic Carcinogenesis Section, Laboratory of Comparative Carcinogenesis, National Cancer Institute at the National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA
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11
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Bodey B, Bodey B, Siegel SE. Mechanisms and markers of carcinogenesis and neoplastic progression. Expert Opin Biol Ther 2006; 5:1317-32. [PMID: 16197337 DOI: 10.1517/14712598.5.10.1317] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Neoplastic transformation evolves over a period of time involving the progression of the cellular immunophenotype (IP) from normal to hyperplastic to dysplastic, and finally, to fully malignant IPs. Superimposed on these changes is the interaction of the initiated cell with its microenvironment, whereby the neoplastically transformed cells, through the regulation or dysregulation of cytoskeletal, integrin, protease and adhesion molecules, develop a novel manner of relation with their surrounding microenvironment. Studies of the neuroendocrine-immune network revealed that the hormonal and cytokine milieu plays an important role impacting the growth and dedifferentiation capabilities of neoplastic cells. This is further affected by the tumour cells themselves determining the constitution of this hormonal microenvironment, allowing the most aggressive and invasive of neoplastically transformed cell clones to promote their own growth and dissemination. The elucidation of the steps of the progression of cancer from premalignant to metastatic and invasive forms is of utmost importance in the differential diagnosis of neoplasms and in the establishment of more efficacious therapeutic regimens. These regimens will certainly begin to take on a more individualised form. The functional characterisation of various human malignancies as to the neoplastically transformed cells' IP, the bases of their interaction with tissue stromal elements, and the molecules involved in the humoral microenvironment of the particular stage of tumour will certainly allow for the better diagnosis, staging, prognostication and treatment of cancers in the future. This paper reviews carcinogenesis from nutritional, genetic and molecular, and humoral aspects, and discusses the importance of tumour markers in the diagnosis and therapeutic management of human cancer.
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Affiliation(s)
- Bela Bodey
- Department of Pathology, University of Southern California, Keck School of Medicine, Reseda, Los Angeles, CA 91335, USA.
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12
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Overexpression of Circulating c-Met Messenger RNA Is Significantly Correlated With Nodal Stage and Early Recurrence in Non-Small Cell Lung Cancer. Chest 2005. [DOI: 10.1016/s0012-3692(15)52173-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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13
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Li X, Wong C, Mysel R, Slobodov G, Metwalli A, Kruska J, Manatt CS, Culkin DJ, Kropp BP, Lin HK. Screening and identification of differentially expressed transcripts in circulating cells of prostate cancer patients using suppression subtractive hybridization. Mol Cancer 2005; 4:30. [PMID: 16086835 PMCID: PMC1199617 DOI: 10.1186/1476-4598-4-30] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2005] [Accepted: 08/08/2005] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Tumor metastasis and changes in host immunosurveillance are important components in cancer development. Tumor cell invasion into the bloodstream is an essential step for systemic metastasis. Currently, the detection of tumor cells in the circulation is mainly dependent upon the utilization of known epithelial cell markers. However, expression of these molecules is not limited to cancer patients; healthy people also have a small number of epithelial cells in their circulation. Utilizing these markers to detect circulating tumor cells (CTCs) cannot adequately explain the mechanisms of tumor cell survival or their development of metastatic potential in peripheral blood. The immune system can also evolve along with the cancer, actually promoting or selecting the outgrowth of tumor variants. Unfortunately, both metastasis and immunosurveillance remain mysterious and are debatable because we have yet to define the molecules that participate in these processes. We are interested in identifying the existence of expressed genes, or mRNA species, that are specifically associated with circulating cells of cancer-bearing patients using prostate cancer (PCa) as a model. RESULTS We established two comprehensive subtracted cDNA libraries using a molecular technique called suppression subtractive hybridization. This technique selectively amplifies transcripts that are specifically expressed in circulating cells of either PCa patients or healthy men. Following sequencing reaction, we showed that 17 out of 23 (73.9%) sequenced clones did not match any mRNAs in the GenBank database. This result suggests that genes associated with alterations in circulating cells of cancer-bearing patients are largely unknown. Semi-quantitative RT-PCR confirmed that two genes are up-regulated in circulating cells of PCa patients, whereas another two genes are down-regulated in the same patients. CONCLUSION The comprehensive gene expression analysis is capable of identifying differentially expressed genes in circulating cells of healthy men and PCa patients. We did not attempt to enrich specific cell types in this study because phenotypes of CTCs and subsets of leukocytes participating in immunosurveillance remain largely unknown. Continuous studies of these differentially expressed genes will eventually lead us to understand the mechanisms involved in tumor metastasis and immune modulation during cancer development.
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Affiliation(s)
- Xin Li
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Carson Wong
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Ralph Mysel
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Gennady Slobodov
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Adam Metwalli
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jarrett Kruska
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - C Scott Manatt
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Daniel J Culkin
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Bradley P Kropp
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Hsueh-Kung Lin
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
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Carles J, Lloreta J, Salido M, Font A, Suarez M, Baena V, Nogue M, Domenech M, Fabregat X. Her-2/neu expression in prostate cancer: a dynamic process? Clin Cancer Res 2005; 10:4742-5. [PMID: 15269147 DOI: 10.1158/1078-0432.ccr-04-0115] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The clinical effects of targeting Her-2/neu in prostate carcinoma are not known. This study explores the feasibility of molecular profiling to determine the correlation between Her-2/neu expression and hormonal sensitivity. Patients with progressive androgen-independent prostate carcinoma were eligible to participate in the study. Her-2/neu expression was assessed on pretreatment tissue specimens and on bone marrow obtained in progressive androgen-independent disease. Her-2/neu expression was evaluated by immunohistochemistry and by fluorescence in situ hybridization in a consecutive series of 26 progressive androgen-independent prostate cancer patients. Twenty four bone marrow biopsy specimens and 16 prostate biopsies from 26 patients were analyzed. These biopsies were categorized by androgen sensitivity at the time of the biopsy. In total, 90% of specimens from bone marrow were Her-2/neu positive, and 10% of the specimens were Her-2/neu negative. Of the prostate biopsies, all were from patients with androgen-dependent disease. Three of 13 androgen-dependent prostate biopsies (23%) overexpressed Her-2/neu. Of the 10 tumor samples analyzed by fluorescence in situ hybridization, genomic amplification of the Her-2/neu locus was not detected in any of the metastatic prostate tumors. Her-2/neu expression varies with the clinical state of patients with prostate carcinoma: Accurate Her-2/neu profiling requires sampling metastatic tissue in patients with metastatic disease. Her-2/neu sampling from metastatic prostate carcinoma is not feasible until more reliable and practical methods can be developed.
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Affiliation(s)
- Joan Carles
- Oncology Unit, Hospital del Mar, Pathology Department, Barcelona, Spain.
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