1
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Alajati A, D'Ambrosio M, Troiani M, Mosole S, Pellegrini L, Chen J, Revandkar A, Bolis M, Theurillat JP, Guccini I, Losa M, Calcinotto A, De Bernardis G, Pasquini E, D'Antuono R, Sharp A, Figueiredo I, Nava Rodrigues D, Welti J, Gil V, Yuan W, Vlajnic T, Bubendorf L, Chiorino G, Gnetti L, Torrano V, Carracedo A, Camplese L, Hirabayashi S, Canato E, Pasut G, Montopoli M, Rüschoff JH, Wild P, Moch H, De Bono J, Alimonti A. CDCP1 overexpression drives prostate cancer progression and can be targeted in vivo. J Clin Invest 2021; 130:2435-2450. [PMID: 32250342 DOI: 10.1172/jci131133] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 01/22/2020] [Indexed: 12/11/2022] Open
Abstract
The mechanisms by which prostate cancer shifts from an indolent castration-sensitive phenotype to lethal castration-resistant prostate cancer (CRPC) are poorly understood. Identification of clinically relevant genetic alterations leading to CRPC may reveal potential vulnerabilities for cancer therapy. Here we find that CUB domain-containing protein 1 (CDCP1), a transmembrane protein that acts as a substrate for SRC family kinases (SFKs), is overexpressed in a subset of CRPC. Notably, CDCP1 cooperates with the loss of the tumor suppressor gene PTEN to promote the emergence of metastatic prostate cancer. Mechanistically, we find that androgens suppress CDCP1 expression and that androgen deprivation in combination with loss of PTEN promotes the upregulation of CDCP1 and the subsequent activation of the SRC/MAPK pathway. Moreover, we demonstrate that anti-CDCP1 immunoliposomes (anti-CDCP1 ILs) loaded with chemotherapy suppress prostate cancer growth when administered in combination with enzalutamide. Thus, our study identifies CDCP1 as a powerful driver of prostate cancer progression and uncovers different potential therapeutic strategies for the treatment of metastatic prostate tumors.
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Affiliation(s)
- Abdullah Alajati
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Mariantonietta D'Ambrosio
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland.,Faculty of Biology and Medicine, University of Lausanne UNIL, Lausanne, Switzerland
| | - Martina Troiani
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Simone Mosole
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Laura Pellegrini
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Jingjing Chen
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland.,Faculty of Biology and Medicine, University of Lausanne UNIL, Lausanne, Switzerland
| | - Ajinkya Revandkar
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland.,Faculty of Biology and Medicine, University of Lausanne UNIL, Lausanne, Switzerland
| | - Marco Bolis
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Jean-Philippe Theurillat
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Ilaria Guccini
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Marco Losa
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Arianna Calcinotto
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Gaston De Bernardis
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Emiliano Pasquini
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland
| | - Rocco D'Antuono
- Institute for Research in Biomedicine (IRB), Bellinzona, Switzerland
| | - Adam Sharp
- Division of Clinical Studies, Institute of Cancer Research, London, United Kingdom
| | - Ines Figueiredo
- Division of Clinical Studies, Institute of Cancer Research, London, United Kingdom.,Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - Daniel Nava Rodrigues
- Division of Clinical Studies, Institute of Cancer Research, London, United Kingdom.,Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - Jonathan Welti
- Division of Clinical Studies, Institute of Cancer Research, London, United Kingdom.,Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - Veronica Gil
- Division of Clinical Studies, Institute of Cancer Research, London, United Kingdom.,Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - Wei Yuan
- Division of Clinical Studies, Institute of Cancer Research, London, United Kingdom.,Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - Tatjana Vlajnic
- Institute for Pathology, University Hospital Basel, Basel, Switzerland
| | - Lukas Bubendorf
- Institute for Pathology, University Hospital Basel, Basel, Switzerland
| | | | - Letizia Gnetti
- Pathology Unit, University Hospital of Parma, Parma, Italy
| | - Verónica Torrano
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio, Spain.,Biochemistry and Molecular Biology Department, University of the Basque Country (UPV/EHU), Bilbao, Spain.,Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain
| | - Arkaitz Carracedo
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio, Spain.,Biochemistry and Molecular Biology Department, University of the Basque Country (UPV/EHU), Bilbao, Spain.,Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain.,Ikerbasque: Basque Foundation for Science, Bilbao, Spain
| | - Laura Camplese
- MRC London Institute of Medical Sciences (LMS), Imperial College London, London, United Kingdom
| | - Susumu Hirabayashi
- MRC London Institute of Medical Sciences (LMS), Imperial College London, London, United Kingdom
| | - Elena Canato
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy
| | - Gianfranco Pasut
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy
| | - Monica Montopoli
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy
| | - Jan Hendrik Rüschoff
- Institute of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Peter Wild
- Institute of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Holger Moch
- Institute of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Johann De Bono
- Division of Clinical Studies, Institute of Cancer Research, London, United Kingdom.,Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - Andrea Alimonti
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland.,Universita' della Svizzera Italiana, Lugano, Switzerland.,Faculty of Biology and Medicine, University of Lausanne UNIL, Lausanne, Switzerland.,Department of Medicine, University of Padua, Padua, Italy.,Department of Health Sciences and Technology, Eidgenössische Technische Hochschule Zürich (ETH), Zurich, Switzerland
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2
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Bahcivan A, Gamsizkan M, Kantarcioglu Coskun S, Cangur S, Yuksel A, Ceyhan A, Onal B. KRAS, BRAF, PIK3CA mutation frequency of radical prostatectomy samples and review of the literature. Aging Male 2020; 23:1627-1641. [PMID: 33878842 DOI: 10.1080/13685538.2021.1901274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE The molecular basis of prostate cancer is highly heterogeneous. Our study aimed to perform the mutation analysis of KRAS, BRAF, PIK3CA, and immunohistochemical (IHC) evaluation of EGFR, HER2, p16, and PTEN to demonstrate new areas for targeted therapies. METHODS A total of 24 prostatectomy samples diagnosed with adenocarcinoma were analyzed by microarray hybridization. Also, these samples were IHC stained for EGFR, HER2, P16, and PTEN. The cases were divided into two groups based on low and high Gleason scores. All findings were compared with the clinicopathological parameters of the patients. RESULTS While KRAS mutation was in 3/24 (12.5%) of our cases, BRAF and PIK3CA mutations were not detected. There was no significant difference between the groups in terms of KRAS mutation frequency. HER2 was immunohistochemically negative in all samples. There was no correlation between EGFR, P16 immunopositivity, and clinicopathological features. CONCLUSION KRAS mutation frequency is similar to those in Asian populations. BRAF and PIK3CA mutation frequencies have been reported in the literature in the range of 0-15% and 0-10.4%, respectively, consistent with our study findings. HER2 immunoexpression is a controversial issue in the literature. EGFR and p16 expressions may not correlate with the stage.
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Affiliation(s)
- Atike Bahcivan
- Department of Pathology, Duzce University, Duzce, Turkey
| | | | | | - Sengul Cangur
- Department of Biostatistics and Medical Informatics, Duzce University, Duzce, Turkey
| | | | - Aysegul Ceyhan
- Department of Pathology, Duzce University, Duzce, Turkey
| | - Binnur Onal
- Department of Pathology, Duzce University, Duzce, Turkey
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Chalmers A, Cannon L, Akerley W. Adverse Event Management in Patients with BRAF V600E-Mutant Non-Small Cell Lung Cancer Treated with Dabrafenib plus Trametinib. Oncologist 2018; 24:963-972. [PMID: 30598499 DOI: 10.1634/theoncologist.2018-0296] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 11/15/2018] [Indexed: 11/17/2022] Open
Abstract
Therapies for advanced non-small cell lung cancer (NSCLC) continue to become more sophisticated. Chemotherapeutics are giving way to newer approaches such as immune checkpoint inhibitors and targeted therapies for greater efficacy and improved outcomes. Dabrafenib plus trametinib combination therapy was first approved for the treatment of metastatic melanoma harboring the BRAF V600-mutation in 2014. In 2017, the U.S. Food and Drug Administration approved the combination for patients with NSCLC with the same mutation based on an ≈ 65% response rate and median progression-free survival of 10-11 months. BRAF mutations are a high-frequency event in melanoma (≈ 50%), whereas the overall incidence in lung cancer is ≈ 2%, but similar in number, because of the high incidence of the disease. As a new approach in NSCLC treatment, dabrafenib plus trametinib has a unique toxicity profile that is likely unfamiliar to care providers in thoracic and general oncology who have not used the combination to treat patients with melanoma. Common adverse events such as pyrexia, fatigue, and nausea, as well as a range of less frequent cutaneous, ocular, and hemorrhagic events, can be observed during treatment with dabrafenib plus trametinib. Previous experience in metastatic melanoma revealed that these events can be effectively managed to improve patient quality of life and reduce unnecessary drug discontinuation. The aim of this review is to summarize treatment guidelines, along with key insights obtained from previous clinical-trial and real-world experience in patients with metastatic melanoma, to properly manage toxicities associated with dabrafenib plus trametinib for NSCLC. IMPLICATIONS FOR PRACTICE: The combination of dabrafenib plus trametinib has demonstrated substantial clinical activity in patients with BRAF V600E-mutant non-small cell lung cancer, leading to U.S. Food and Drug Administration approval. Although the combination has a manageable safety profile, many toxicities associated with the regimen may not be familiar to thoracic specialists or general oncologists. Extensive clinical experience with the combination in patients with metastatic melanoma has provided a wealth of strategies to identify and manage adverse events associated with dabrafenib plus trametinib. These can be used by medical oncologists to enhance early recognition of toxicities and facilitate effective management, thereby improving quality of treatment for patients.
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Affiliation(s)
- Anna Chalmers
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA
| | - Laura Cannon
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA
| | - Wallace Akerley
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA
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4
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Jafarian AH, Mirshekar Nasirabadi K, Etemad S, Jafaripour M, Darijani M, Sheikhi M, Ayatollahi H, Shakeri S, Shams SF, Davari S. Molecular Status of BRAF Mutation in Prostate Adenocarcinoma: The Analysis of 100 Cases in North-East of IRAN. IRANIAN JOURNAL OF PATHOLOGY 2018; 13:415-421. [PMID: 30774680 PMCID: PMC6358555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 06/12/2018] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND OBJECTIVE BRAF mutations were studied in various populations for prostate carcinoma (PC); however, mutations in BRAF gene are unusual compared to KRAS. Oncogenic activating of BRAF mutations were studied lately in almost 0%10% of prostate cancer cases. METHODS In this retrospective study, we gathered 100 formalin-fixed paraffin-embedded samples of prostate adenocarcinoma. A hundred archived samples of adjacent benign prostatic hyperplasia were chosen as normal control. This study was done in pathology laboratory of Qaem Hospital during 2013-2015. RESULTS Total number of 200 PC and normal cases was investigated for BRAF V600E mutation. The BRAF V600E mutation was found in only 4 patients but it was not detected in normal cases. There were no significant differences between patient and control groups for this mutation (P>0.99). The frequency of BRAF V600E mutation was not significant in different age groups (P>0.285); the most frequency was related to the age range of 71-80. No significant difference was observed between tumor grade and BRAF mutation (P=0.21). CONCLUSION According to our findings, BRAF gene mutations did not play essential role in PC. Therefore, anti-BRAF (V600E) could not be considered as a proper target for therapy.
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Affiliation(s)
- Amir Hossein Jafarian
- Cancer Molecular Pathology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Sare Etemad
- Cancer Molecular Pathology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Masoumeh Jafaripour
- Cancer Molecular Pathology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mansoore Darijani
- Cancer Molecular Pathology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Sheikhi
- Cancer Molecular Pathology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Ayatollahi
- Cancer Molecular Pathology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran,Corresponding information: Hossein Ayatollahi, Cancer Molecular Pathology Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. E-mail:
| | - Sepideh Shakeri
- Cancer Molecular Pathology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyyede Fatemeh Shams
- Cancer Molecular Pathology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Saeed Davari
- Cancer Molecular Pathology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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5
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Baik CS, Myall NJ, Wakelee HA. Targeting BRAF-Mutant Non-Small Cell Lung Cancer: From Molecular Profiling to Rationally Designed Therapy. Oncologist 2017; 22:786-796. [PMID: 28487464 PMCID: PMC5507646 DOI: 10.1634/theoncologist.2016-0458] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 02/06/2017] [Indexed: 12/28/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) remains the leading cause of cancer-related deaths globally. However, the identification of oncogenic driver alterations involved in the initiation and maintenance of NSCLC, such as epidermal growth factor receptor mutations and anaplastic lymphoma kinase translocation, has led to the development of novel therapies that directly target mutant proteins and associated signaling pathways, resulting in improved clinical outcomes. As sequencing techniques have improved, the molecular heterogeneity of NSCLC has become apparent, leading to the identification of a number of potentially actionable oncogenic driver mutations. Of these, one of the most promising therapeutic targets is B-Raf proto-oncogene, serine/threonine kinase (BRAF). Mutations in BRAF, observed in 2%-4% of NSCLCs, typically lead to constitutive activation of the protein and, as a consequence, lead to activation of the mitogen-activated protein kinase signaling pathway. Direct inhibition of mutant BRAF and/or the downstream mitogen-activated protein kinase kinase (MEK) has led to prolonged survival in patients with BRAF-mutant metastatic melanoma. This comprehensive review will discuss the clinical characteristics and prognostic implications of BRAF-mutant NSCLC, the clinical development of BRAF and MEK inhibitors from melanoma to NSCLC, and practical considerations for clinicians involving BRAF mutation screening and the choice of targeted therapy. IMPLICATIONS FOR PRACTICE Personalized medicine has begun to provide substantial benefit to patients with oncogene-driven non-small cell lung cancer (NSCLC). However, treatment options for patients with oncogenic driver mutations lacking targeted treatment strategies remain limited. Direct inhibition of mutant B-Raf proto-oncogene, serine/threonine kinase (BRAF) and/or downstream mitogen-activated protein kinase kinase (MEK) has the potential to change the course of the disease for patients with BRAF-mutant NSCLC, as it has in BRAF-mutant melanoma. Optimization of screening strategies for rare mutations and the choice of appropriate agents on an individual basis will be key to providing timely and successful intervention.
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Affiliation(s)
- Christina S Baik
- Fred Hutchinson Cancer Research Center, University of Washington, Seattle, Washington, USA
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6
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Cohn AL, Day BM, Abhyankar S, McKenna E, Riehl T, Puzanov I. BRAFV600 mutations in solid tumors, other than metastatic melanoma and papillary thyroid cancer, or multiple myeloma: a screening study. Onco Targets Ther 2017; 10:965-971. [PMID: 28255242 PMCID: PMC5322838 DOI: 10.2147/ott.s120440] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Background Mutations in the BRAF gene have been implicated in several human cancers. The objective of this screening study was to identify patients with solid tumors (other than metastatic melanoma or papillary thyroid cancer) or multiple myeloma harboring activating BRAFV600 mutations for enrollment in a vemurafenib clinical study. Methods Formalin-fixed, paraffin-embedded tumor samples were collected and sent to a central laboratory to identify activating BRAFV600 mutations by bidirectional direct Sanger sequencing. Results Overall incidence of BRAFV600E mutation in evaluable patients (n=548) was 3% (95% confidence interval [CI], 1.7–4.7): 11% in colorectal tumors (n=75), 6% in biliary tract tumors (n=16), 3% in non-small cell lung cancers (n=71), 2% in other types of solid tumors (n=180), and 3% in multiple myeloma (n=31). There were no BRAFV600 mutations in this cohort of patients with ovarian tumors (n=68), breast cancer (n=86), or prostate cancer (n=21). Conclusion This multicenter, national screening study confirms previously reported incidences of BRAFV600 mutations from single-center studies. Patients identified with BRAFV600 mutations were potentially eligible for enrollment in the VE-BASKET study.
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Affiliation(s)
- Allen L Cohn
- Medical Research, Rocky Mountain Cancer Centers, Denver, CO
| | | | | | | | - Todd Riehl
- Product Development Oncology, Genentech, Inc., South San Francisco, CA
| | - Igor Puzanov
- Melanoma Section, Division of Hematology-Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
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Estrogen receptor alpha drives proliferation in PTEN-deficient prostate carcinoma by stimulating survival signaling, MYC expression and altering glucose sensitivity. Oncotarget 2015; 6:604-16. [PMID: 25436982 PMCID: PMC4359242 DOI: 10.18632/oncotarget.2820] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 11/25/2014] [Indexed: 12/20/2022] Open
Abstract
While high doses of estrogen, in combination with androgens, can initiate prostate cancer (PCa) via activation of the estrogen receptor α (ERα), the role of ERα in PCa cells within established tumors is largely unknown. Here we show that expression of ERα is increased in high grade human PCa. Similarly, ERα is elevated in mouse models of aggressive PCa driven by MYC overexpression or deletion of PTEN. Within the prostate of PTEN-deficient mice, there is a progressive pattern of ERα expression: low in benign glands, moderate in tumors within the dorsal, lateral and ventral lobes, and high in tumors within the anterior prostate. This expression significantly correlates with the proliferation marker Ki67. Furthermore, in vitro knockdown of ERα in cells derived from PTEN-deficient tumors causes a significant and sustained decrease in proliferation. Depletion of ERα also reduces the activity of the PI3K and MAPK pathways, both downstream targets of non-genomic ERα action. Finally, ERα knockdown reduces the levels of the MYC protein and lowers the sensitivity of cellular proliferation to glucose withdrawal, which correlates with decreased expression of the glucose transporter GLUT1. Collectively, these results demonstrate that ERα orchestrates proliferation and metabolism to promote the neoplastic growth of PCa cells.
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8
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Comparative Aspects of BRAF Mutations in Canine Cancers. Vet Sci 2015; 2:231-245. [PMID: 29061943 PMCID: PMC5644641 DOI: 10.3390/vetsci2030231] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 08/14/2015] [Accepted: 08/19/2015] [Indexed: 01/07/2023] Open
Abstract
Activating mutations of the BRAF gene lead to constitutive activation of the MAPK pathway. The characterization and discovery of BRAF mutations in a variety of human cancers has led to the development of specific inhibitors targeting the BRAF/MAPK pathway and dramatically changed clinical outcomes in BRAF-mutant melanoma patients. Recent discovery of BRAF mutation in canine cancers underscores the importance of MAPK pathway activation as an oncogenic molecular alteration evolutionarily conserved between species. A comparative approach using the domestic dog as a spontaneous cancer model will provide new insights into the dysregulation of BRAF/MAPK pathway in carcinogenesis and facilitate in vivo studies to evaluate therapeutic strategies targeting this pathway's molecules for cancer therapy. The BRAF mutation in canine cancers may also represent a molecular marker and therapeutic target in veterinary oncology. This review article summarizes the current knowledge on BRAF mutations in human and canine cancers and discusses the potential applications of this abnormality in veterinary oncology.
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9
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Abstract
Activating mutations of the BRAF gene lead to constitutive activation of the MAPK pathway. Although many human cancers carry the mutated BRAF gene, this mutation has not yet been characterized in canine cancers. As human and canine cancers share molecular abnormalities, we hypothesized that BRAF gene mutations also exist in canine cancers. To test this hypothesis, we sequenced the exon 15 of BRAF, mutation hot spot of the gene, in 667 canine primary tumors and 38 control tissues. Sequencing analysis revealed that a single nucleotide T to A transversion at nucleotide 1349 occurred in 64 primary tumors (9.6%), with particularly high frequency in prostatic carcinoma (20/25, 80%) and urothelial carcinoma (30/45, 67%). This mutation results in the amino acid substitution of glutamic acid for valine at codon 450 (V450E) of canine BRAF, corresponding to the most common BRAF mutation in human cancer, V600E. The evolutional conservation of the BRAF V600E mutation highlights the importance of MAPK pathway activation in neoplasia and may offer opportunity for molecular diagnostics and targeted therapeutics for dogs bearing BRAF-mutated cancers.
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10
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Hussain MRM, Baig M, Mohamoud HSA, Ulhaq Z, Hoessli DC, Khogeer GS, Al-Sayed RR, Al-Aama JY. BRAF gene: From human cancers to developmental syndromes. Saudi J Biol Sci 2014; 22:359-73. [PMID: 26150740 PMCID: PMC4486731 DOI: 10.1016/j.sjbs.2014.10.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 10/05/2014] [Accepted: 10/14/2014] [Indexed: 12/20/2022] Open
Abstract
The BRAF gene encodes for a serine/threonine protein kinase that participates in the MAPK/ERK signalling pathway and plays a vital role in cancers and developmental syndromes (RASopathies). The current review discusses the clinical significance of the BRAF gene and other members of RAS/RAF cascade in human cancers and RAS/MAPK syndromes, and focuses the molecular basis and clinical genetics of BRAF to better understand its parallel involvement in both tumourigenesis and RAS/MAPK syndromes—Noonan syndrome, cardio-facio-cutaneous syndrome and LEOPARD syndrome.
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Affiliation(s)
- Muhammad Ramzan Manwar Hussain
- Faculty of Genetic Medicine, King Abdulaziz University, Jeddah, Saudi Arabia ; CAS-Institute of microbiology, University of Chinese Academy of Sciences, Beijing, China
| | - Mukhtiar Baig
- Faculty of Medicine, King Abdulaziz University, Rabigh Branch, Saudi Arabia
| | - Hussein Sheik Ali Mohamoud
- Human Genetics Research Centre, Division of Biomedical Sciences (BMS), St. George's University of London (SGUL), London, UK
| | - Zaheer Ulhaq
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Daniel C Hoessli
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Ghaidaa Siraj Khogeer
- Department of Biology, Genomics and Biotechnology Section, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ranem Radwan Al-Sayed
- Department of Biology, Genomics and Biotechnology Section, King Abdulaziz University, Jeddah, Saudi Arabia
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11
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Helfand BT, Catalona WJ. The Epidemiology and Clinical Implications of Genetic Variation in Prostate Cancer. Urol Clin North Am 2014; 41:277-97. [DOI: 10.1016/j.ucl.2014.01.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Meyer A, Cygan P, Tolzien K, Galvez AG, Bitran JD, Lestingi TM, Nabhan C. Role of sorafenib in overcoming resistance of chemotherapy-failure castration-resistant prostate cancer. Clin Genitourin Cancer 2013; 12:100-5. [PMID: 24169494 DOI: 10.1016/j.clgc.2013.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Revised: 08/31/2013] [Accepted: 09/04/2013] [Indexed: 01/07/2023]
Abstract
BACKGROUND Sorafenib promotes apoptosis through downstream pathways that can be deregulated in CRPC. We hypothesized that sorafenib could overcome chemotherapy resistance in CRPC. PATIENTS AND METHODS Eligible patients were those whose disease had progressed during chemotherapy (docetaxel or mitoxantrone) or within 12 weeks of stopping either. Patients then continued or resumed their last chemotherapy regimen with the addition of sorafenib 400 mg twice daily. Patients received a maximum of 6 cycles of chemotherapy/sorafenib followed by sorafenib alone until disease progression. The primary end point was combination safety. Secondary end points were overall response, percentage of SD, and time to progression (TTP). RESULTS Twenty-two patients (21 evaluable) were enrolled (16 patients with Gleason score ≥ 7). Median age was 68 years (range, 59-83 years). Median prostate-specific antigen (PSA) was 142 ng/dL (range, 13.6-9584). Visceral and bone disease were present combined in 9 patients (41%). Ten patients (47.6%) showed biochemical response (19% with > 50% PSA decline) and 16 patients (76%) achieved radiographic stability (according to Response Evaluation Criteria for Solid Tumors) after starting sorafenib for a median duration of 6 months (range, 4-12 months). Grade 3/4 nonhematologic toxicities were fatigue (n = 7, 32%), palmar-plantar erythrodysesthesia (n = 4, 18%). Dose reduction of sorafenib occurred at least once in 15 patients (68%) because of palmar-plantar erythrodysesthesia (22%) and fatigue (22%). With a median follow-up of 19 months (range, 3-46 months), median overall survival was 8 months. TTP according to PSA level was 3 months and TTP according to imaging studies and/or clinically was 6 months. Median number of treatment cycles given was 6 (range, 1-10). CONCLUSION Sorafenib can be combined safely with chemotherapy and in some patients overcomes chemotherapy resistance.
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Affiliation(s)
- Andrew Meyer
- Division of Hematology/Oncology, Department of Medicine, Advocate Lutheran General Hospital, Park Ridge, IL
| | - Peter Cygan
- Division of Hematology/Oncology, Department of Medicine, Advocate Lutheran General Hospital, Park Ridge, IL
| | | | | | | | - Timothy M Lestingi
- Oncology Specialists, SC, Park Ridge, IL; Division of Hematology and Oncology, Department of Medicine, Advocate Lutheran General Hospital, Park Ridge, IL
| | - Chadi Nabhan
- Department of Medicine, Section of Hematology and Oncology, The University of Chicago, Chicago, IL.
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The molecular basis for ethnic variation and histological subtype differences in prostate cancer. SCIENCE CHINA-LIFE SCIENCES 2013; 56:780-7. [PMID: 23852643 PMCID: PMC4078990 DOI: 10.1007/s11427-013-4522-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 07/01/2013] [Indexed: 01/04/2023]
Abstract
Prostate cancer is a common malignancy among men in Western countries. Recently the morbidity and mortality of prostate cancer increase dramatically in several oriental countries including China. Rapidly evolving technology in molecular biology such as high-throughput sequencing and integrative analysis of genomic and transcriptomic landscapes have enabled the identification of key oncogenic events for prostate cancer initiation, progression and resistance to hormonal therapy. These surging data of prostate cancer genome also provide insights on ethnic variation and the differences in histological subtype of this disease. In this review, differences in the incidence of prostate cancer and the prevalence of main genetic alterations between Asian and Western populations are discussed. We also review the recent findings on the mechanisms underlying neuroendocrine differentiation of prostate cancer and the development of small cell neuroendocrine carcinoma after androgen deprivation therapy.
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