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Al Bashir S, Alorjani MS, Kheirallah K, Al Hamad M, Haddad HK, Al-Dwairy A, Bani-Fawwaz BA, Aldaoud N, Halalsheh O, Amawi S, Matalka II. PTEN, ERG, SPINK1, and TFF3 Status and Relationship in a Prostate Cancer Cohort from Jordanian Arab Population. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:174. [PMID: 38256434 PMCID: PMC10821453 DOI: 10.3390/medicina60010174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/11/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024]
Abstract
Background and Objectives: Prognostic biomarkers in prostate cancer (PCa) include PTEN, ERG, SPINK1, and TFF3. Their relationships and patterns of expression in PCa in developing countries, including Jordan, have not yet been investigated. Materials and Methods: A tissue microarray (TMA) of PCa patients was taken from paraffin-embedded tissue blocks for 130 patients. PTEN, ERG, SPINK1, and TFF3 expression profiles were examined using immunohistochemistry (IHC) and correlated with each other and other clinicopathological factors. Results: PTEN loss of any degree was observed in 42.9% of PCa cases. ERG and TFF3 were expressed in 59.3% and 46.5% of PCa cases, respectively. SPINK1 expression was observed in 6 out of 104 PCa cases (5.4%). Among all PCa cases (n = 104), 3.8% (n = 4) showed SPINK1+/ERG+ phenotype, 1.9% (n = 2) showed SPINK1+/ERG- phenotype, 56.7% (n = 59) showed SPINK1-/ERG+ phenotype, and 37.5% showed SPINK1-/ERG- phenotype (n = 39). Among ERG positive cases (n = 63), 6.3% were SPINK1 positive. Among SPINK1 positive cases (n = 6), 66.7% were ERG positive. SPINK1 expression was predominantly observed in a subgroup of cancers that expressed TFF3 (6/6). Additionally, a statistically significant loss of PTEN expression was observed from Gleason Score 6 (GS6) (Grade Group 1 (GG1)) to GS9-10 (GG5); (p-value 0.019). Conclusions: This is the first study to look at the status of the PTEN, ERG, SPINK1, and TFF3 genes in a Jordanian Arab population. Loss of PTEN has been linked to more aggressive prostate cancer with high GSs/GGs. SPINK1 expression was predominantly observed in a subgroup of cancers that expressed TFF3. Our results call for screening these biomarkers for grading and molecular subtyping of the disease.
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Affiliation(s)
- Samir Al Bashir
- Department of Pathology and Microbiology, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan; (M.S.A.); (N.A.); (I.I.M.)
| | - Mohammed S. Alorjani
- Department of Pathology and Microbiology, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan; (M.S.A.); (N.A.); (I.I.M.)
| | - Khalid Kheirallah
- Department of Public Health and Community Medicine, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan;
| | - Mohammad Al Hamad
- Department of Pathology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia;
| | - Husam K. Haddad
- Department of Pathology and Laboratory Medicine, Ministry of Health, Amman 11118, Jordan;
| | - Ahmad Al-Dwairy
- Medstar-Georgetown Washington Hospital Center, Georgetown University, Washington, DC 20057, USA;
| | - Baha A. Bani-Fawwaz
- Gastroenterology and Hepatology Department, Adventhealth, Orlando, FL 32804, USA;
| | - Najla Aldaoud
- Department of Pathology and Microbiology, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan; (M.S.A.); (N.A.); (I.I.M.)
| | - Omar Halalsheh
- Department of General Surgery and Urology, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan;
| | - Saddam Amawi
- Johns Hopkins Aramco Health Centre, Al Mubarraz 36423, Saudi Arabia;
| | - Ismail I. Matalka
- Department of Pathology and Microbiology, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan; (M.S.A.); (N.A.); (I.I.M.)
- College of Medicine, Ras Al-Khaimah (RAK) Medical and Health Sciences University, Ras Al-Khaimah 11172, United Arab Emirates
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Gamallat Y, Choudhry M, Li Q, Rokne JG, Alhajj R, Abdelsalam R, Ghosh S, Arbet J, Boutros PC, Bismar TA. Serrate RNA Effector Molecule (SRRT) Is Associated with Prostate Cancer Progression and Is a Predictor of Poor Prognosis in Lethal Prostate Cancer. Cancers (Basel) 2023; 15:2867. [PMID: 37345203 DOI: 10.3390/cancers15102867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 05/03/2023] [Accepted: 05/16/2023] [Indexed: 06/23/2023] Open
Abstract
Arsenite-resistance protein 2, also known as serrate RNA effector molecule (ARS2/SRRT), is known to be involved in cellular proliferation and tumorigenicity. However, its role in prostate cancer (PCa) has not yet been established. We investigated the potential role of SRRT in 496 prostate samples including benign, incidental, advanced, and castrate-resistant patients treated by androgen deprivation therapy (ADT). We also explored the association of SRRT with common genetic aberrations in lethal PCa using immunohistochemistry (IHC) and performed a detailed analysis of SRRT expression using The Cancer Genome Atlas (TCGA PRAD) by utilizing RNA-seq, clinical information (pathological T category and pathological Gleason score). Our findings indicated that high SRRT expression was significantly associated with poor overall survival (OS) and cause-specific survival (CSS). SRRT expression was also significantly associated with common genomic aberrations in lethal PCa such as PTEN loss, ERG gain, mutant TP53, or ATM. Furthermore, TCGA PRAD data revealed that high SRRT mRNA expression was significantly associated with higher Gleason scores, PSA levels, and T pathological categories. Gene set enrichment analysis (GSEA) of RNAseq data from the TCGA PRAD cohort indicated that SRRT may play a potential role in regulating the expression of genes involved in prostate cancer aggressiveness. Conclusion: The current data identify the SRRT's potential role as a prognostic for lethal PCa, and further research is required to investigate its potential as a therapeutic target.
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Affiliation(s)
- Yaser Gamallat
- Department of Pathology and Laboratory Medicine, University of Calgary Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
- Departments of Oncology, Biochemistry and Molecular Biology, University of Calgary Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
- Arnie Charbonneau Cancer Institute and Tom Baker Cancer Center, Calgary, AB T2N 4N1, Canada
| | - Muhammad Choudhry
- Department of Pathology and Laboratory Medicine, University of Calgary Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
| | - Qiaowang Li
- Department of Computer Science, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Jon George Rokne
- Department of Computer Science, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Reda Alhajj
- Department of Computer Science, University of Calgary, Calgary, AB T2N 1N4, Canada
- Department of Computer Engineering, Istanbul Medipol University, Istanbul 34810, Turkey
- Department of Health Informatics, University of Southern Denmark, 5230 Odense, Denmark
| | - Ramy Abdelsalam
- Department of Pathology and Laboratory Medicine, University of Calgary Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
| | - Sunita Ghosh
- Departments of Mathematical and Statistical Sciences and Medical Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R7, Canada
| | - Jaron Arbet
- Departments of Human Genetics and Urology, and Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90095, USA
| | - Paul C Boutros
- Departments of Human Genetics and Urology, and Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90095, USA
| | - Tarek A Bismar
- Department of Pathology and Laboratory Medicine, University of Calgary Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
- Departments of Oncology, Biochemistry and Molecular Biology, University of Calgary Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
- Arnie Charbonneau Cancer Institute and Tom Baker Cancer Center, Calgary, AB T2N 4N1, Canada
- Prostate Cancer Centre, Calgary, AB T2V 1P9, Canada
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3
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Gamallat Y, Bakker A, Khosh Kish E, Choudhry M, Walker S, Aldakheel S, Seyedi S, Huang KC, Ghosh S, Gotto G, Bismar TA. The Association between Cyclin Dependent Kinase 2 Associated Protein 1 (CDK2AP1) and Molecular Subtypes of Lethal Prostate Cancer. Int J Mol Sci 2022; 23:ijms232113326. [PMID: 36362115 PMCID: PMC9658869 DOI: 10.3390/ijms232113326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/25/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
Prostate cancer (PCa) is one of the most commonly diagnosed types of malignancy and is the second leading cause of cancer-related death in men in developed countries. Cyclin dependent kinase 2 associate protein 1(CDK2AP1) is an epigenetic and cell cycle regulator gene which has been downregulated in several malignancies, but its involvement in PCa has not yet been investigated in a clinical setting. We assessed the prognostic value of CDK2AP1 expression in a cohort of men diagnosed with PCa (n = 275) treated non-surgically by transurethral resection of the prostate (TURP) and studied the relationship between CDK2AP1 expression to various PCa molecular subtypes (ERG, PTEN, p53 and AR) and evaluated the association with clinical outcome. Further, we used bioinformatic tools to analyze the available TCGA PRAD transcriptomic data to explore the underlying mechanism. Our data confirmed increased expression of CDK2AP1 with higher Gleason Grade Group (GG) and metastatic PCa (p <0.0001). High CDK2AP1 expression was associated with worse overall survival (OS) (HR: 1.62, CI: 1.19−2.21, p = 0.002) and cause-specific survival (CSS) (HR: 2.012, CI 1.29−3.13, p = 0.002) using univariate analysis. When compared to each sub-molecular type. High CDK2AP1/PTEN-loss, abnormal AR or p53 expression showed even worse association to poorer OS and CCS and remained significant when adjusted for GG. Our data indicates that CDK2AP1 directly binds to p53 using the Co-Immunoprecipitation (Co-IP) technique, which was validated using molecular docking tools. This suggests that these two proteins have a significant association through several binding features and correlates with our observed clinical data. In conclusion, our results indicated that the CDK2AP1 overexpression is associate with worse OS and CSS when combined with certain PCa molecular subtypes; interaction between p53 stands out as the most prominent candidate which directly interacts with CDK2AP1.
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Affiliation(s)
- Yaser Gamallat
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
- Departments of Oncology, Biochemistry and Molecular Biology, Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
- Arnie Charbonneau Cancer Institute and Tom Baker Cancer Center, Calgary, AB T2N 4N1, Canada
| | - Andrea Bakker
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Ealia Khosh Kish
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
- Departments of Oncology, Biochemistry and Molecular Biology, Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
| | - Muhammad Choudhry
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
- Departments of Oncology, Biochemistry and Molecular Biology, Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
| | - Simon Walker
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Saood Aldakheel
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Sima Seyedi
- Departments of Oncology, Biochemistry and Molecular Biology, Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
| | - Kuo-Cheng Huang
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Sunita Ghosh
- Departments of Mathematical and Statistical Sciences and Medical Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R7, Canada
| | | | - Tarek A. Bismar
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
- Departments of Oncology, Biochemistry and Molecular Biology, Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
- Arnie Charbonneau Cancer Institute and Tom Baker Cancer Center, Calgary, AB T2N 4N1, Canada
- Correspondence: ; Tel.: +1-403-943-8430; Fax: +1-403-943-3333
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4
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Liao C, Wang Q, An J, Zhang M, Chen J, Li X, Xiao L, Wang J, Long Q, Liu J, Guan X. SPINKs in Tumors: Potential Therapeutic Targets. Front Oncol 2022; 12:833741. [PMID: 35223512 PMCID: PMC8873584 DOI: 10.3389/fonc.2022.833741] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 01/14/2022] [Indexed: 12/14/2022] Open
Abstract
The serine protease inhibitor Kazal type (SPINK) family includes SPINK1-14 and is the largest branch in the serine protease inhibitor family. SPINKs play an important role in pancreatic physiology and disease, sperm maturation and capacitation, Nager syndrome, inflammation and the skin barrier. Evidence shows that the unregulated expression of SPINK1, 2, 4, 5, 6, 7, and 13 is closely related to human tumors. Different SPINKs exhibit various regulatory modes in different tumors and can be used as tumor prognostic markers. This article reviews the role of SPINK1, 2, 4, 5, 6, 7, and 13 in different human cancer processes and helps to identify new cancer treatment targets.
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Affiliation(s)
- Chengcheng Liao
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China
- Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
| | - Qian Wang
- Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
- Microbial Resources and Drug Development Key Laboratory of Guizhou Tertiary Institution, Life Sciences Institute, Zunyi Medical University, Zunyi, China
| | - Jiaxing An
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Minglin Zhang
- Department of Gastroenterology, Affiliated Baiyun Hospital of Guizhou Medical University, Guiyang, China
| | - Jie Chen
- Department of Urology, The Third Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Xiaolan Li
- Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
- Microbial Resources and Drug Development Key Laboratory of Guizhou Tertiary Institution, Life Sciences Institute, Zunyi Medical University, Zunyi, China
| | - Linlin Xiao
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China
- Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
| | - Jiajia Wang
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China
| | - Qian Long
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China
- Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
- *Correspondence: Qian Long, ; Xiaoyan Guan, ; Jianguo Liu,
| | - Jianguo Liu
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China
- Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
- *Correspondence: Qian Long, ; Xiaoyan Guan, ; Jianguo Liu,
| | - Xiaoyan Guan
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China
- Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
- *Correspondence: Qian Long, ; Xiaoyan Guan, ; Jianguo Liu,
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5
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ARPC1B Is Associated with Lethal Prostate Cancer and Its Inhibition Decreases Cell Invasion and Migration In Vitro. Int J Mol Sci 2022; 23:ijms23031476. [PMID: 35163398 PMCID: PMC8836051 DOI: 10.3390/ijms23031476] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 01/26/2022] [Accepted: 01/26/2022] [Indexed: 02/05/2023] Open
Abstract
ARPC1B (Actin Related Protein 2/3 Complex Subunit 1B) has been found to be involved in platelet abnormalities of immune-mediated inflammatory disease and eosinophilia. However, its role in prostate cancer (PCa) has not been established. We characterized the role of ARPC1B in PCa invasion and metastasis and investigated its prognosis using in vitro cellular models and PCa clinical data. Higher immunohistochemistry (IHC) expressions of ARPC1B were observed in localized and castrate resistant PCa (CRPC) vs. benign prostate tissue (p < 0.01). Additionally, 47% of patients with grade group 5 (GG) showed high ARPC1B expression vs. other GG patients. Assessing ARPC1B expression in association with two of the common genetic aberrations in PCa (ERG and PTEN) showed significant association to overall and cause-specific survival for combined assessment of ARPC1B and PTEN, and ARPC1B and ERG. Knockdown of ARPC1B impaired the migration and invasion of PC3 and DU145 PCa cells via downregulation of Aurora A kinase (AURKA) and resulted in the arrest of the cells in the G2/M checkpoint of the cell cycle. Additionally, higher ARPC1B expression was observed in stable PC3-ERG cells compared to normal PC3, supporting the association between ERG and ARPC1B. Our findings implicate the role of ARPC1B in PCa invasion and metastasis in association with ERG and further support its prognostic value as a biomarker in association with ERG and PTEN in identifying aggressive phenotypes of PCa cancer.
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Decreased ATM Protein Expression Is Substantiated with PTEN Loss in Defining Aggressive Phenotype of Prostate Cancer Associated with Lethal Disease. EUR UROL SUPPL 2021; 29:93-101. [PMID: 34337539 PMCID: PMC8317877 DOI: 10.1016/j.euros.2021.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2021] [Indexed: 11/24/2022] Open
Abstract
Background Ataxia Telangiectasia Mutated (ATM) serine/threonine protein kinase is a known tumor suppressor, involved in DNA damage repair. It has prognostic and predictive therapeutic implications and is associated with aggressive prostate cancer (PCa). Objective To investigate the prognostic value of ATM protein expression in PCa patients and assessed the combined value of ATM, ERG, and PTEN status. Design, setting, and participants This study consisted of 303 patients with incidental, locally advanced, and castrate-resistant PCa by transurethral resection of the prostate (TURP). Outcome measurements and statistical analysis TURP samples from 303 PCa patients were assessed by immunohistochemistry (IHC for ATM, ERG, and PTEN. Individual and combined marker status were correlated with International Society of Urological Pathology Gleason grade group, overall survival (OS), and PCa-specific mortality (PCSM). Results and limitations Decreased ATM expression (negative/weak intensity) occurred in 164/303 (54.1%) patients, and was associated with shorter OS and higher PCSM (p = 0.015 and p = 0.001, respectively). Negative/weak ATM expression was significantly associated with PCSM with a hazard ratio of 2.09 (95% confidence interval 1.34–3.27, p = 0.001). Assessment of Combined ATM/PTEN expression showed improved prognostic power to predict OS and PCSM, independent of Gleason grade groups. Conclusions Decreased ATM protein expression is associated with poor outcomes in advanced PCa patients. Patients with combined low ATM/PTEN negative expression are at the highest risk for reduced OS and PCSM. Assessing the combined status of ATM/PTEN by IHC in PCa patients may aid in risk stratification relative to OS and PCSM. Moreover, since ATM plays an integral role in DNA damage response pathways, future studies will enhance our understanding of how outcomes of patients with altered ATM and PTEN expression can be improved further with poly-ADP ribose polymerase inhibitors (PARPi), combinations of PARPi and androgen receptor–targeted therapies, as well as platinum-based chemotherapies. Patient summary Lower ATM intensity is associated with increased cancer-specific mortality in prostate cancer patients. Patients with lower ATM and PTEN negative expression showed decreased overall survival and increased cancer mortality compared with controls.
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7
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Abou-Ouf H, Assem H, Ghosh S, Karnes RJ, Stoletov K, Palanisamy N, Lewis JD, Bismar TA. High Serine-arginine Protein Kinase 1 Expression with PTEN Loss Defines Aggressive Phenotype of Prostate Cancer Associated with Lethal Outcome and Decreased Overall Survival. EUR UROL SUPPL 2020; 23:1-8. [PMID: 34337483 PMCID: PMC8317848 DOI: 10.1016/j.euros.2020.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2020] [Indexed: 12/12/2022] Open
Abstract
Background Serine-arginine protein kinase 1 (SRPK1) has been implicated in prostate cancer (PCa) progression. However, its prognostic value and association with ERG and PTEN expression, two of the most common genetic alterations, have not been explored fully. Objective We assessed the prognostic value of SRPK1 in association with ERG and PTEN in a cohort of patients managed nonsurgically by androgen deprivation therapy (ADT) for advanced disease. Design, setting, and participants The study cohort consisted of men diagnosed with PCa by transurethral resection of the prostate (TURP; n = 480). The patients were divided into three main groups: incidental (patients with Gleason score [GS] ≤7 with no prior ADT), advanced (patients with GS ≥8 with no prior ADT), and castrate-resistant PCa (patients with prior ADT). Outcome measurements and statistical analysis A total of 480 TURP samples were assessed by immunohistochemistry for SRPK1, ERG, and PTEN, and results were correlated with Gleason grade group (GG), overall survival (OS), and PCa-specific mortality (PCSM). Results and limitations High SRPK1 expression was noted in 105/455 (23%) available patient cores. Expression of SRPK1 was associated with Gleason grade grouping (p < 0.0001) with high expression detected in 22/74 (33%) with GG 5. High SRPK1 was not associated with ERG positivity (p = 0.18) but was significantly associated with PTEN intensity (p = 0.001). High SRPK1 was associated with OS (hazard ratio [HR] 1.99; confidence interval [CI]: 1.57–2.54, p < 0.0001) and PCSM (HR 1.64; CI: 1.19–2.26, p < 0.002). Adjusting for Gleason score, patients with high SRPK1 and negative PTEN had the worst clinical outcome for both OS and PCSM compared with other patients (p < 0.0001, HR: 3.02; CI: 1.87–4.88 and HR: 6.40, CI: 3.19–12.85, respectively). Conclusions High SRPK1 is associated with worse OS and PCSM. Moreover, patients with high SRPK1 expression and loss of PTEN had the worst clinical outcome for OS and cancer-specific mortality. Combined status of SRPK1 and PTEN may provide added value in stratifying patients into various prognostic groups. Patient summary The expression of serine-arginine protein kinase 1 (SRPK1) combined with PTEN has a significant prognostic role in prostate cancer patients. Patients with high SRPK1 expression and negative PTEN had the worst clinical outcome for overall survival and cancer-specific mortality.
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Affiliation(s)
- Hatem Abou-Ouf
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine and Alberta Public Laboratories, University of Calgary, Calgary, Alberta, Canada
| | - Hisham Assem
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine and Alberta Public Laboratories, University of Calgary, Calgary, Alberta, Canada
| | - Sunita Ghosh
- Department of Medical Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.,Alberta Health Services-Cancer Control, Edmonton, Alberta, Canada
| | | | - Konstantin Stoletov
- Department of Medical Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Nallasivam Palanisamy
- Department of Urology, Vattikuti Urology Institute, Henry Ford Health System Detroit, MI, USA
| | - John D Lewis
- Department of Medical Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Tarek A Bismar
- Department of Pathology and Laboratory Medicine, Cumming School of Medicine and Alberta Public Laboratories, University of Calgary, Calgary, Alberta, Canada.,Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Arnie Charbonneau Cancer Institute, Tom Baker Cancer Center and Alberta Public Laboratories, Calgary, Alberta, Canada
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8
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Hashim D, Gonzalez-Feliciano AG, Ahearn TU, Pettersson A, Barber L, Pernar CH, Ebot EM, Isikbay M, Finn SP, Giovannucci EL, Lis RT, Loda M, Parmigiani G, Lotan T, Kantoff PW, Mucci LA, Graff RE. Family history of prostate cancer and the incidence of ERG- and phosphatase and tensin homolog-defined prostate cancer. Int J Cancer 2020; 146:2694-2702. [PMID: 31318977 DOI: 10.1002/ijc.32577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 06/18/2019] [Accepted: 06/28/2019] [Indexed: 01/08/2023]
Abstract
Family history is among the strongest known risk factors for prostate cancer (PCa). Emerging data suggest molecular subtypes of PCa, including two somatic genetic aberrations: fusions of androgen-regulated promoters with ERG and, separately, phosphatase and tensin homolog (PTEN) loss. We examined associations between family history and incidence of these subtypes in 44,126 men from the prospective Health Professionals Follow-up Study. ERG and PTEN status were assessed by immunohistochemistry. Multivariable competing risks models were used to estimate hazard ratios (HR) and 95% confidence intervals (CI) for associations between self-reported family history of PCa and molecular subtypes of disease. Thirteen percent of men had a positive family history of PCa at baseline. During a median follow-up of 18.5 years, 5,511 PCa cases were diagnosed. Among them, 888 were assayed for ERG status (47% ERG-positive) and 715 were assayed for PTEN loss (14% PTEN null). Family history was more strongly associated with risk of ERG-negative (HR: 2.15; 95% CI: 1.71-2.70) than ERG-positive (HR: 1.49; 95% CI: 1.13-1.95) disease (pheterogeneity : 0.04). The strongest difference was among men with an affected father (HRERG-negative : 2.09; 95% CI: 1.64-2.66; HRERG-positive : 1.30; 95% CI: 0.96-1.76; pheterogeneity : 0.01). Family history of PCa was positively associated with both PTEN null (HR: 2.10; 95% CI: 1.26-3.49) and PTEN intact (HR: 1.72; 95% CI: 1.39-2.13) PCa (pheterogeneity : 0.47). Our results indicate that PCa family history may be positively associated with PCa in all ERG and PTEN subtypes, suggesting a role of genetic susceptibility in their development. It is possible that ERG-negative disease could be especially associated with positive family history.
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Affiliation(s)
- Dana Hashim
- Icahn School of Medicine at Mount Sinai, Tisch Cancer Institute, New York, NY
| | | | - Thomas U Ahearn
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.,Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Andreas Pettersson
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.,Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Lauren Barber
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Claire H Pernar
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Ericka M Ebot
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Masis Isikbay
- Department of Surgery, University of California, San Francisco, San Francisco, CA
| | - Stephen P Finn
- Department of Histopathology, St. James's Hospital and Trinity College Dublin Medical School, Dublin, Ireland
| | - Edward L Giovannucci
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.,Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Rosina T Lis
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Massimo Loda
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Giovanni Parmigiani
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA.,Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, MA
| | - Tamara Lotan
- Department of Pathology, Johns Hopkins Bayview Medical Center, Baltimore, MD
| | - Philip W Kantoff
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Lorelei A Mucci
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.,Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Rebecca E Graff
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.,Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA
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9
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Hao L, Li H, Zhang S, Yang Y, Xu Z, Zhang Y, Liu Z. Integrative Exome Sequencing Analysis in Castration-Resistant Prostate Cancer in Chinese Population. Curr Pharm Biotechnol 2020; 21:140-148. [PMID: 31580249 DOI: 10.2174/1389201019666191003142119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 05/21/2019] [Accepted: 09/02/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND Castration-resistant Prostate Cancer (CRPC) is a fatal disease with rapid growth. The malignancy usually presents with metastasis and poor prognosis, and causes 100% mortality. Therefore, the treatment of CRPC is extremely challenging, and its pathogenesis need to be elucidated urgently. OBJECTIVE The high throughput sequencing technology was used to sequence the whole exome associated with CRPC, to explore the molecular mechanism of CRPC, and to find the potential therapeutic targets. METHODS We performed whole-exome sequencing of FFPE tissue from 11 Chinese adult male patients. Genomic DNA was fragmented and enriched for whole-exome sequencing using the QiAamp DNA FFPE Tissue KIT, sequenced on an Illumina HiSeq2000 platform, and the relevant genes were analyzed using biological information. Finally, immunohistochemistry method was used to detect the phosphorylation level of LATS1 in CRPC tissues of MST1 mutant and non-mutant patients. RESULTS We have screened 85 significant mutant genes with relatively high mutation rates of TP53, AR, KMT2, DMAPK1, PIK3R1, SH2B3, WHSC1, KMT2D, MST1 and MAPK1. We first found that MST1 has multiple mutations in CRPC patients, and the MST1 plays an important role in the Hippo pathway. Immunohistochemistry results showed that the phosphorylation level of LATS1 in the mutant patients was significantly lower than that in the non-mutant patients. CONCLUSION We speculate that MST1 would be a new potential target for the treatment of CRPC by regulating Hippo signaling pathway. The results provided an important clue to the molecular mechanism of CRPC.
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Affiliation(s)
- Lifang Hao
- College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China.,Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Baoding 071002, China
| | - Hui Li
- Department of Urology, Peking University International Hospital, Beijing 102206, China
| | - Su Zhang
- College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China.,Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Baoding 071002, China
| | - Yanlei Yang
- College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China.,Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Baoding 071002, China
| | - Zhenzhen Xu
- College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China.,Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Baoding 071002, China
| | - Yanfen Zhang
- College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China.,Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Baoding 071002, China
| | - Zhongcheng Liu
- College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China.,Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Baoding 071002, China
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10
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Abou-Ouf H, Ghosh S, Box A, Palanisamy N, Bismar TA. Combined loss of TFF3 and PTEN is associated with lethal outcome and overall survival in men with prostate cancer. J Cancer Res Clin Oncol 2019; 145:1751-1759. [DOI: 10.1007/s00432-019-02933-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 05/08/2019] [Indexed: 01/03/2023]
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11
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Association of ERG/PTEN status with biochemical recurrence after radical prostatectomy for clinically localized prostate cancer. Med Oncol 2018; 35:152. [PMID: 30291535 DOI: 10.1007/s12032-018-1212-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 09/27/2018] [Indexed: 12/20/2022]
Abstract
We have previously demonstrated a significant correlative relationship between PTEN deletion and ERG rearrangement, both in the development of clinically localized prostate cancers and metastases. Herein, we evaluate the cooperative role of ERG and PTEN in oncological outcomes after radical prostatectomy for clinically localized prostate cancer. We evaluated ERG and PTEN status using three previously described cohorts. The first cohort included 235 clinically localized prostate cancer cases represented on tissue microarrays (TMA), evaluated using previously validated FISH assays for ERG and PTEN. The second cohort included 167 cases of clinically localized prostate cancer on TMAs evaluated for PTEN by FISH, and for PTEN and ERG by dual IHC. The third cohort comprised 59 clinically localized prostate cancer cases assessed by array comparative genomic hybridization (aCGH). Kaplan-Meir plots and long rank tests were used to assess the association of ERG and PTEN status with biochemical recurrence after radical prostatectomy for clinically localized prostate cancer. Of the 317 cases eligible for analyses with evaluable ERG and PTEN status, 88 (27.8%) patients developed biochemical recurrence over a median follow-up of 5.7 years. Overall, 45% (142/317) of cases demonstrated ERG rearrangement and 20% (62/317) of cases demonstrated PTEN loss. Hemizygous and homozygous deletion of PTEN was seen in 10% (18/175) and 3% (5/175) of ERG-negative cases, respectively. In contrast, hemizygous and homozygous deletion of PTEN was seen in 11% (15/142) and 17% (24/123) of ERG-positive cases, respectively. PTEN loss (heterozygous or homozygous) was significantly associated with shorter time to biochemical recurrence compared to no PTEN loss (p < 0.001). However, ERG rearrangement versus no rearrangement was not associated with time to PSA recurrence (p = 0.15). Patients who exhibited ERG rearrangement and loss of PTEN had no significant difference in time to recurrence compared to patients with wild-type ERG and loss of PTEN (p = 0.30). Our findings confirm a mutual cooperative role of ERG and PTEN in the pathogenesis of prostate cancer, particularly for homozygous PTEN deletion. ERG did not stratify outcome either alone or in combination with PTEN in this cohort.
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12
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Jamaspishvili T, Berman DM, Ross AE, Scher HI, De Marzo AM, Squire JA, Lotan TL. Clinical implications of PTEN loss in prostate cancer. Nat Rev Urol 2018; 15:222-234. [PMID: 29460925 DOI: 10.1038/nrurol.2018.9] [Citation(s) in RCA: 371] [Impact Index Per Article: 61.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Genomic aberrations of the PTEN tumour suppressor gene are among the most common in prostate cancer. Inactivation of PTEN by deletion or mutation is identified in ∼20% of primary prostate tumour samples at radical prostatectomy and in as many as 50% of castration-resistant tumours. Loss of phosphatase and tensin homologue (PTEN) function leads to activation of the PI3K-AKT (phosphoinositide 3-kinase-RAC-alpha serine/threonine-protein kinase) pathway and is strongly associated with adverse oncological outcomes, making PTEN a potentially useful genomic marker to distinguish indolent from aggressive disease in patients with clinically localized tumours. At the other end of the disease spectrum, therapeutic compounds targeting nodes in the PI3K-AKT-mTOR (mechanistic target of rapamycin) signalling pathway are being tested in clinical trials for patients with metastatic castration-resistant prostate cancer. Knowledge of PTEN status might be helpful to identify patients who are more likely to benefit from these therapies. To enable the use of PTEN status as a prognostic and predictive biomarker, analytically validated assays have been developed for reliable and reproducible detection of PTEN loss in tumour tissue and in blood liquid biopsies. The use of clinical-grade assays in tumour tissue has shown a robust correlation between loss of PTEN and its protein as well as a strong association between PTEN loss and adverse pathological features and oncological outcomes. In advanced disease, assessing PTEN status in liquid biopsies shows promise in predicting response to targeted therapy. Finally, studies have shown that PTEN might have additional functions that are independent of the PI3K-AKT pathway, including those affecting tumour growth through modulation of the immune response and tumour microenvironment.
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Affiliation(s)
- Tamara Jamaspishvili
- Division of Cancer Biology and Genetics, Cancer Research Institute, Queen's University, Kingston, Ontario, Canada.,Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - David M Berman
- Division of Cancer Biology and Genetics, Cancer Research Institute, Queen's University, Kingston, Ontario, Canada.,Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Ashley E Ross
- Department of Urology, Johns Hopkins University, Baltimore, MD, USA
| | - Howard I Scher
- Genitourinary Oncology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center and Weill Cornell Medical College, New York, NY, USA
| | - Angelo M De Marzo
- Department of Pathology, Johns Hopkins University, Baltimore, MD, USA.,Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
| | - Jeremy A Squire
- Department of Pathology and Legal Medicine, University of Sao Paulo, Campus Universitario Monte Alegre, Ribeirão Preto, Brazil
| | - Tamara L Lotan
- Department of Pathology, Johns Hopkins University, Baltimore, MD, USA.,Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
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13
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Lotan TL, Heumann A, Rico SD, Hicks J, Lecksell K, Koop C, Sauter G, Schlomm T, Simon R. PTEN loss detection in prostate cancer: comparison of PTEN immunohistochemistry and PTEN FISH in a large retrospective prostatectomy cohort. Oncotarget 2017; 8:65566-65576. [PMID: 29029453 PMCID: PMC5630353 DOI: 10.18632/oncotarget.19217] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 04/27/2017] [Indexed: 11/25/2022] Open
Abstract
PTEN deletion is an established prognostic biomarker in prostate cancer. We compared PTEN immunohistochemistry (IHC) and PTEN fluorescence in situ hybridization (FISH) in the largest existing radical prostatectomy cohort with clinical follow-up data. There was high concordance between IHC and FISH: 93% (3098/3330) of tumors with intact PTEN IHC showed absence of PTEN gene deletion and 66% (720/1087) of cases with PTEN protein loss by IHC showed PTEN gene deletion by FISH. 84% (447/533) of cases with PTEN homozygous gene deletion had PTEN protein loss by IHC. PTEN loss by IHC was associated with reduced PSA recurrence-free survival (RFS) in multivariable models (HR=1.3; 95% CI: 1.16-1.47). Among cases with either PTEN deletion or absence of PTEN deletion by FISH, PTEN loss by IHC was strongly associated with reduced RFS on univariable analysis (p=0.0005 and p<0.0001 respectively). Among cases with intact PTEN by IHC, homozygous (p=0.04) but not heterozygous (p=0.10) PTEN gene deletion was weakly associated with reduced RFS. Among cases with PTEN loss by IHC, both homozygous (p=0.0044) and heterozygous (p=0.0017) PTEN gene deletion were associated with reduced RFS. These data support the utility of PTEN IHC and PTEN FISH as complementary screening tools for PTEN loss in prostate cancer.
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Affiliation(s)
- Tamara L. Lotan
- Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
- Oncology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Asmus Heumann
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Jessica Hicks
- Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | | | - Christina Koop
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Guido Sauter
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thorsten Schlomm
- Martini-Klinik Prostate Cancer Center, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Urology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ronald Simon
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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14
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Prostate cancer, PI3K, PTEN and prognosis. Clin Sci (Lond) 2017; 131:197-210. [PMID: 28057891 DOI: 10.1042/cs20160026] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 11/12/2016] [Accepted: 11/21/2016] [Indexed: 12/22/2022]
Abstract
Loss of function of the PTEN tumour suppressor, resulting in dysregulated activation of the phosphoinositide 3-kinase (PI3K) signalling network, is recognized as one of the most common driving events in prostate cancer development. The observed mechanisms of PTEN loss are diverse, but both homozygous and heterozygous genomic deletions including PTEN are frequent, and often accompanied by loss of detectable protein as assessed by immunohistochemistry (IHC). The occurrence of PTEN loss is highest in aggressive metastatic disease and this has driven the development of PTEN as a prognostic biomarker, either alone or in combination with other factors, to distinguish indolent tumours from those likely to progress. Here, we discuss these factors and the consequences of PTEN loss, in the context of its role as a lipid phosphatase, as well as current efforts to use available inhibitors of specific components of the PI3K/PTEN/TOR signalling network in prostate cancer treatment.
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15
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Huang KC, Evans A, Donnelly B, Bismar TA. SPINK1 Overexpression in Localized Prostate Cancer: a Rare Event Inversely Associated with ERG Expression and Exclusive of Homozygous PTEN Deletion. Pathol Oncol Res 2016; 23:399-407. [PMID: 27738792 DOI: 10.1007/s12253-016-0119-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Accepted: 09/28/2016] [Indexed: 12/17/2022]
Abstract
SPINK1 is proposed as potential prognostic marker in prostate cancer (PCA). However, its relation to PTEN and ERG in localized PCA remains unclear. The study population consisted of two independent cohorts of men treated by radical prostatectomy for localized PCA (discovery n = 218 and validation n = 129). Patterns of association between SPINK1 and each of ERG and PTEN were evaluated by immunohistochemistry and fluorescence in situ hybridization. Associations between SPINK1 expression and various pathologic parameters and clinical outcome were also investigated. SPINK1 was expressed in 15.3 % and 10.9 % of cases in the discovery and validation cohort, respectively. SPINK expression was observed in 5.56 % of high-grade prostatic intraepithelial neoplasia and 1.1 % of adjacent morphologically benign prostatic glands. SPINK1 and ERG expression were almost exclusive, with only 1.0 % of the cases co-expressing both in the same core sample. SPINK1 interfocal and within-core heterogeneity was noted in 29.2 % and 64.6 % of cases, respectively. SPINK1 expression was not significantly associated with PTEN deletion in the two cohorts (p = 0.871 for discovery cohort and p = 0.293 for validation cohort). While SPINK1 expression did occur with hemizygous PTEN deletion, there was a complete absence of SPINK1 expression in PCA showing homozygous PTEN deletion, which was confirmed in the validation cohort (p = 0.02). Despite SPINK1's association with higher Gleason score (>7) (p = 0.02), it was not associated with other pathological parameters or biochemical recurrence post-radical prostatectomy. We documented absolute exclusivity between SPINK1 overexpression and homozygous PTEN deletion in localized PCA. SPINK1 and ERG expressions are exclusive events in PCA. SPINK1 is not of added prognostic value in localized PCA.
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Affiliation(s)
- Kuo-Cheng Huang
- Department of Pathology and Laboratory Medicine, University of Calgary and Calgary Laboratory Services, 7007, 14sth st sw, Calgary, AB, T2V 1P9, Canada
| | - Andrew Evans
- Department of Pathology, Laboratory Medicine Program, University Health Network and University of Toronto, Toronto, ON, Canada
| | - Bryan Donnelly
- Department of Urology, University of Calgary, Calgary, AB, Canada
- The Prostate Cancer Center, Calgary, AB, Canada
| | - Tarek A Bismar
- Department of Pathology and Laboratory Medicine, University of Calgary and Calgary Laboratory Services, 7007, 14sth st sw, Calgary, AB, T2V 1P9, Canada.
- Departments of Oncology, Biochemistry and Molecular Biology, University of Calgary, Calgary, AB, Canada.
- Southern Alberta Cancer Institute and Tom Baker Cancer Center, Calgary, AB, Canada.
- The Prostate Cancer Center, Calgary, AB, Canada.
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16
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Analytic validation of a clinical-grade PTEN immunohistochemistry assay in prostate cancer by comparison with PTEN FISH. Mod Pathol 2016; 29:904-14. [PMID: 27174589 PMCID: PMC4967011 DOI: 10.1038/modpathol.2016.88] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 04/05/2016] [Accepted: 04/14/2016] [Indexed: 01/09/2023]
Abstract
PTEN loss is a promising prognostic and predictive biomarker in prostate cancer. Because it occurs most commonly via PTEN gene deletion, we developed a clinical-grade, automated, and inexpensive immunohistochemical assay to detect PTEN loss. We studied the sensitivity and specificity of PTEN immunohistochemistry relative to four-color fluorescence in situ hybridization (FISH) for detection of PTEN gene deletion in a multi-institutional cohort of 731 primary prostate tumors. Intact PTEN immunostaining was 91% specific for the absence of PTEN gene deletion (549/602 tumors with two copies of the PTEN gene by FISH showed intact expression of PTEN by immunohistochemistry) and 97% sensitive for the presence of homozygous PTEN gene deletion (absent PTEN protein expression by immunohistochemistry in 65/67 tumors with homozygous deletion). PTEN immunohistochemistry was 65% sensitive for the presence of hemizygous PTEN gene deletion, with protein loss in 40/62 hemizygous tumors. We reviewed the 53 cases where immunohistochemistry showed PTEN protein loss and FISH showed two intact copies of the PTEN gene. On re-review, there was ambiguous immunohistochemistry loss in 6% (3/53) and failure to analyze the same tumor area by both methods in 34% (18/53). Of the remaining discordant cases, 41% (13/32) revealed hemizygous (n=8) or homozygous (n=5) PTEN gene deletion that was focal in most cases (11/13). The remaining 19 cases had two copies of the PTEN gene detected by FISH, representing truly discordant cases. Our automated PTEN immunohistochemistry assay is a sensitive method for detection of homozygous PTEN gene deletions. Immunohistochemistry screening is particularly useful to identify cases with heterogeneous PTEN gene deletion in a subset of tumor glands. Mutations, small insertions, or deletions and/or epigenetic or microRNA-mediated mechanisms may lead to PTEN protein loss in tumors with normal or hemizygous PTEN gene copy number.
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17
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Abstract
Although most prostate cancer (PCa) cases are not life-threatening, approximately 293 000 men worldwide die annually due to PCa. These lethal cases are thought to be caused by coordinated genomic alterations that accumulate over time. Recent genome-wide analyses of DNA from subjects with PCa have revealed most, if not all, genetic changes in both germline and PCa tumor genomes. In this article, I first review the major, somatically acquired genomic characteristics of various subtypes of PCa. I then recap key findings on the relationships between genomic alterations and clinical parameters, such as biochemical recurrence or clinical relapse, metastasis and cancer-specific mortality. Finally, I outline the need for, and challenges with, validation of recent findings in prospective studies for clinical utility. It is clearer now than ever before that the landscape of somatically acquired aberrations in PCa is highlighted by DNA copy number alterations (CNAs) and TMPRSS2-ERG fusion derived from complex rearrangements, numerous single nucleotide variations or mutations, tremendous heterogeneity, and continuously punctuated evolution. Genome-wide CNAs, PTEN loss, MYC gain in primary tumors, and TP53 loss/mutation and AR amplification/mutation in advanced metastatic PCa have consistently been associated with worse cancer prognosis. With this recently gained knowledge, it is now an opportune time to develop DNA-based tests that provide more accurate patient stratification for prediction of clinical outcome, which will ultimately lead to more personalized cancer care than is possible at present.
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Affiliation(s)
- Wennuan Liu
- Program for Personalized Cancer Care, Research Institute, NorthShore University HealthSystem, Evanston, IL, USA
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18
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Lotan TL, Wei W, Morais CL, Hawley ST, Fazli L, Hurtado-Coll A, Troyer D, McKenney JK, Simko J, Carroll PR, Gleave M, Lance R, Lin DW, Nelson PS, Thompson IM, True LD, Feng Z, Brooks JD. PTEN Loss as Determined by Clinical-grade Immunohistochemistry Assay Is Associated with Worse Recurrence-free Survival in Prostate Cancer. Eur Urol Focus 2016; 2:180-188. [PMID: 27617307 DOI: 10.1016/j.euf.2015.07.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND PTEN is the most commonly deleted tumor suppressor gene in primary prostate cancer (PCa) and its loss is associated with poor clinical outcomes and ERG gene rearrangement. OBJECTIVE We tested whether PTEN loss is associated with shorter recurrence-free survival (RFS) in surgically treated PCa patients with known ERG status. DESIGN SETTING AND PARTICIPANTS A genetically validated, automated PTEN immunohistochemistry (IHC) protocol was used for 1275 primary prostate tumors from the Canary Foundation retrospective PCa tissue microarray cohort to assess homogeneous (in all tumor tissue sampled) or heterogeneous (in a subset of tumor tissue sampled) PTEN loss. ERG status as determined by a genetically validated IHC assay was available for a subset of 938 tumors. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS Associations between PTEN and ERG status were assessed using Fisher's exact test. Kaplan-Meier and multivariate weighted Cox proportional models for RFS were constructed. RESULTS AND LIMITATIONS When compared to intact PTEN, homogeneous (hazard ratio [HR] 1.66, p = 0.001) but not heterogeneous (HR 1.24, p = 0.14) PTEN loss was significantly associated with shorter RFS in multivariate models. Among ERG-positive tumors, homogeneous (HR 3.07, p < 0.0001) but not heterogeneous (HR 1.46, p = 0.10) PTEN loss was significantly associated with shorter RFS. Among ERG-negative tumors, PTEN did not reach significance for inclusion in the final multivariate models. The interaction term for PTEN and ERG status with respect to RFS did not reach statistical significance (p = 0.11) for the current sample size. CONCLUSIONS These data suggest that PTEN is a useful prognostic biomarker and that there is no statistically significant interaction between PTEN and ERG status for RFS. PATIENT SUMMARY We found that loss of the PTEN tumor suppressor gene in prostate tumors as assessed by tissue staining is correlated with shorter time to prostate cancer recurrence after radical prostatectomy.
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Affiliation(s)
- Tamara L Lotan
- Pathology Department, Johns Hopkins School of Medicine, Baltimore, MD, USA; Oncology Department, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Wei Wei
- MD Anderson Cancer Center, Houston, TX, USA
| | - Carlos L Morais
- Pathology Department, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | | | - Ladan Fazli
- Vancouver Prostate Centre, Vancouver, BC, Canada
| | | | - Dean Troyer
- Pathology Department, Eastern Virginia Medical School, Norfolk, VA, USA; Urology Department, Eastern Virginia Medical School, Norfolk, VA, USA
| | | | - Jeffrey Simko
- Pathology Department, University of California-San Francisco, San Francisco, CA, USA; Urology Department, University of California-San Francisco, San Francisco, CA, USA
| | - Peter R Carroll
- Urology Department, University of California-San Francisco, San Francisco, CA, USA
| | | | - Raymond Lance
- Urology Department, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Daniel W Lin
- Urology Department, University of Washington, Seattle, WA, USA
| | - Peter S Nelson
- Oncology Department, University of Washington, Seattle, WA, USA; Pathology Department, University of Washington, Seattle, WA, USA
| | - Ian M Thompson
- Urology Department, University of Texas Health Science Center, San Antonio, TX, USA
| | - Lawrence D True
- Pathology Department, University of California-San Francisco, San Francisco, CA, USA
| | | | - James D Brooks
- Urology Department, Stanford University School of Medicine, Stanford, CA, USA
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19
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ERG expression in prostate cancer: biological relevance and clinical implication. J Cancer Res Clin Oncol 2015; 142:1781-93. [DOI: 10.1007/s00432-015-2096-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 12/10/2015] [Indexed: 01/09/2023]
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20
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Huang KC, Bégin LR, Palanisamy N, Donnelly B, Bismar TA. SPINK1 expression in relation to PTEN and ERG in matched primary and lymph node metastatic prostate cancer: Implications for biomarker development. Urol Oncol 2015; 34:235.e1-10. [PMID: 26725250 DOI: 10.1016/j.urolonc.2015.11.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 10/04/2015] [Accepted: 11/14/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND SPINK1, ERG, and PTEN are proposed prognostic biomarkers in prostate cancer (PCA). However, their relations and patterns of expression in primary and metastatic lymph node (LN) PCAs are not fully explored. METHODS A tissue microarray of matched primary PCA and LN metastasis was constructed from 36 patients. SPINK1, ERG, and PTEN expression statuses were assessed by immunohistochemistry and correlated with each other. RESULTS SPINK1 and ERG were expressed in 25% and 42.7% of primary PCA cases, respectively. PTEN loss of any degree was observed in 91.7% of primary PCA cases, with 54.2% showing complete loss. In primary PCA, 12.5% of the cases showed SPINK1+/ERG-phenotype, 16.7% showed SPINK1+/ERG+phenotype, 25.0% showed SPINK1-/ERG+phenotype, and 45.8% showed SPINK1-/ERG-phenotype. All PCAs with expression of either SPINK1 or ERG also exhibited PTEN loss, whereas PCA without PTEN loss (2 cases) expressed neither SPINK1 nor ERG. In primary PCA, evaluation of combined ERG and SPINK1 status, but not SPINK1 individually, was associated with a significant difference in proportion of Gleason patterns (P = 0.013), with the SPINK1+/ERG+and SPINK1-/ERG-phenotypes represented more in Gleason pattern>7 PCAs. In LN metastases, the overall SPINK1 protein expression frequency was significantly lower (6.5% of cases) compared with primary PCA (P = 0.03). Only 16.7% of cases with positive SPINK1 expression in primary PCA maintained expression in LN metastases. The down-regulated SPINK1 expression in LN was primarily because of a reduction in the SPINK1+/ERG+PCA subpopulation to 3.5% of cases (P = 0.16 compared with primary PCA). The frequencies of ERG expression and PTEN loss were relatively stable in primary PCA and LN metastases. CONCLUSION SPINK1 expression is dynamically regulated with up-regulation in primary sites of nodal metastatic PCA and down-regulation in LN metastases. The increased SPINK1 expression in primary site of nodal metastatic PCA is secondary to an increased frequency of SPINK1+/ERG+tumors. In primary PCAs, the SPINK1+/ERG+phenotype is associated with higher Gleason grade, suggesting that this phenotype may mark a more aggressive PCA subpopulation with higher risk of LN metastases.
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Affiliation(s)
- Kuo-Cheng Huang
- Department of Pathology and Laboratory Medicine, University of Calgary and Calgary Laboratory Services, Calgary, Alberta, Canada
| | - Louis R Bégin
- Division of Anatomic Pathology, Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
| | - Nallasivam Palanisamy
- Department of Urology, Vattikuti Urology Institute, Henry Ford Health System, Detroit, MI
| | - Bryan Donnelly
- Department of Urology, University of Calgary, Calgary, Alberta, Canada; The Prostate Cancer Center, Calgary, Alberta, Canada
| | - Tarek A Bismar
- Department of Pathology and Laboratory Medicine, University of Calgary and Calgary Laboratory Services, Calgary, Alberta, Canada; The Prostate Cancer Center, Calgary, Alberta, Canada; Departments of Oncology, Biochemistry and Molecular Biology, Calgary, Alberta, Canada; Southern Alberta Cancer Institute and Tom Baker Cancer Center, Calgary, Alberta, Canada.
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21
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Morais CL, Herawi M, Toubaji A, Albadine R, Hicks J, Netto GJ, De Marzo AM, Epstein JI, Lotan TL. PTEN loss and ERG protein expression are infrequent in prostatic ductal adenocarcinomas and concurrent acinar carcinomas. Prostate 2015; 75:1610-9. [PMID: 26178158 PMCID: PMC4537350 DOI: 10.1002/pros.23042] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 05/27/2015] [Indexed: 11/08/2022]
Abstract
BACKGROUND Prostatic ductal adenocarcinoma is an unusual and aggressive morphologic subtype of prostate cancer. PTEN gene deletion and ERG gene rearrangement are among the most common genomic changes in acinar prostate cancers. Though ductal adenocarcinoma most commonly occurs with synchronous usual-type acinar adenocarcinoma, little is known about the molecular phenotype of these mixed tumors. METHODS We used genetically validated immunohistochemistry (IHC) assays to assess PTEN and ERG status in a group of 37 surgically treated ductal adenocarcinomas and 18 synchronous acinar adenocarcinomas where we have previously reported ERG gene rearrangement status by fluorescence in situ hybridization (FISH). A group of 34 stage and grade-matched pure acinar adenocarcinoma cases was studied as a control. RESULTS ERG IHC was highly concordant with ERG FISH results, with 100% (36/36) concordance among ductal adenocarcinomas and 91% (31/34) concordance among 34 pure acinar carcinomas. Similar to previous FISH results, ERG expression by IHC was significantly less common among ductal adenocarcinomas (11% or 4/37) and their synchronous acinar tumors (6% or 1/18) compared to matched pure acinar adenocarcinoma cases (50% or 17/34; P = 0.0005 and 0.002, respectively). PTEN loss by IHC was also less common among ductal adenocarcinomas (18% or 6/34) and their synchronous acinar tumors (22% or 4/18) compared to matched pure acinar carcinomas (50% or 17/34; P = 0.01 and 0.08, respectively). As expected, PTEN loss was enriched among ERG positive compared to ERG-negative tumors in the pure acinar tumor control group (2.5-fold enrichment; P = 0.04) however this was not observed among the ductal adenocarcinomas (1.5 fold enrichment; P = NS). Of ductal adenocarcinomas with an evaluable synchronous acinar component, ERG status was concordant in 94% (17/18) and PTEN status was concordant in 94% (16/17). CONCLUSIONS Based on PTEN and ERG, ductal adenocarcinomas and their concurrent acinar carcinomas may be clonally related in some cases and show important molecular differences from pure acinar carcinoma.
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Affiliation(s)
- Carlos L. Morais
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Mehsati Herawi
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Antoun Toubaji
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Roula Albadine
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Jessica Hicks
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
| | - George J. Netto
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
- Department of Oncology, Johns Hopkins Medical Institutions, Baltimore, MD
- Department of Urology, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Angelo M. De Marzo
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
- Department of Oncology, Johns Hopkins Medical Institutions, Baltimore, MD
- Department of Urology, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Jonathan I. Epstein
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
- Department of Oncology, Johns Hopkins Medical Institutions, Baltimore, MD
- Department of Urology, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Tamara L. Lotan
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
- Department of Oncology, Johns Hopkins Medical Institutions, Baltimore, MD
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22
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Ateeq B, Kunju LP, Carskadon SL, Pandey SK, Singh G, Pradeep I, Tandon V, Singhai A, Goel A, Amit S, Agarwal A, Dinda AK, Seth A, Tsodikov A, Chinnaiyan AM, Palanisamy N. Molecular profiling of ETS and non-ETS aberrations in prostate cancer patients from northern India. Prostate 2015; 75:1051-62. [PMID: 25809148 PMCID: PMC4832366 DOI: 10.1002/pros.22989] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 02/02/2015] [Indexed: 11/09/2022]
Abstract
BACKGROUND Molecular stratification of prostate cancer (PCa) based on genetic aberrations including ETS or RAF gene-rearrangements, PTEN deletion, and SPINK1 over-expression show clear prognostic and diagnostic utility. Gene rearrangements involving ETS transcription factors are frequent pathogenetic somatic events observed in PCa. Incidence of ETS rearrangements in Caucasian PCa patients has been reported, however, occurrence in Indian population is largely unknown. The aim of this study was to determine the prevalence of the ETS and RAF kinase gene rearrangements, SPINK1 over-expression, and PTEN deletion in this cohort. METHODS In this multi-center study, formalin-fixed paraffin embedded (FFPE) PCa specimens (n = 121) were procured from four major medical institutions in India. The tissues were sectioned and molecular profiling was done using immunohistochemistry (IHC), RNA in situ hybridization (RNA-ISH) and/or fluorescence in situ hybridization (FISH). RESULTS ERG over-expression was detected in 48.9% (46/94) PCa specimens by IHC, which was confirmed in a subset of cases by FISH. Among other ETS family members, while ETV1 transcript was detected in one case by RNA-ISH, no alteration in ETV4 was observed. SPINK1 over-expression was observed in 12.5% (12/96) and PTEN deletion in 21.52% (17/79) of the total PCa cases. Interestingly, PTEN deletion was found in 30% of the ERG-positive cases (P = 0.017) but in only one case with SPINK1 over-expression (P = 0.67). BRAF and RAF1 gene rearrangements were detected in ∼1% and ∼4.5% of the PCa cases, respectively. CONCLUSIONS This is the first report on comprehensive molecular profiling of the major spectrum of the causal aberrations in Indian men with PCa. Our findings suggest that ETS gene rearrangement and SPINK1 over-expression patterns in North Indian population largely resembled those observed in Caucasian population but differed from Japanese and Chinese PCa patients. The molecular profiling data presented in this study could help in clinical decision-making for the pursuit of surgery, diagnosis, and in selection of therapeutic intervention.
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Affiliation(s)
- Bushra Ateeq
- Department of Biological Sciences and BioengineeringIndian Institute of TechnologyKanpurIndia
| | - Lakshmi P. Kunju
- Michigan Center for Translational PathologyUniversity of Michigan Medical SchoolAnn ArborMichigan
- Department of PathologyUniversity of MichiganUniversity of Michigan Medical SchoolAnn ArborMichigan
- Comprehensive Cancer CenterUniversity of Michigan Medical SchoolAnn ArborMichigan
| | - Shannon L. Carskadon
- Michigan Center for Translational PathologyUniversity of Michigan Medical SchoolAnn ArborMichigan
- Department of PathologyUniversity of MichiganUniversity of Michigan Medical SchoolAnn ArborMichigan
| | - Swaroop K. Pandey
- Department of Biological Sciences and BioengineeringIndian Institute of TechnologyKanpurIndia
| | - Geetika Singh
- Department of PathologyAll India Institute of Medical SciencesNew DelhiIndia
| | - Immanuel Pradeep
- Department of PathologyAll India Institute of Medical SciencesNew DelhiIndia
| | - Vini Tandon
- Digdarshika Pathology LaboratoryLucknowIndia
| | - Atin Singhai
- Department of PathologyKing George's Medical UniversityLucknowIndia
| | - Apul Goel
- Department of UrologyKing George's Medical UniversityLucknowIndia
| | - Sonal Amit
- Department of PathologyGSVM Medical CollegeKanpurIndia
| | - Asha Agarwal
- Department of PathologyGSVM Medical CollegeKanpurIndia
| | - Amit K. Dinda
- Department of PathologyAll India Institute of Medical SciencesNew DelhiIndia
| | - Amlesh Seth
- Department of UrologyAll India Institute of Medical SciencesNew DelhiIndia
| | | | - Arul M. Chinnaiyan
- Michigan Center for Translational PathologyUniversity of Michigan Medical SchoolAnn ArborMichigan
- Department of PathologyUniversity of MichiganUniversity of Michigan Medical SchoolAnn ArborMichigan
- Comprehensive Cancer CenterUniversity of Michigan Medical SchoolAnn ArborMichigan
- Howard Hughes Medical InstituteUniversity of Michigan Medical SchoolAnn ArborMichigan
| | - Nallasivam Palanisamy
- Michigan Center for Translational PathologyUniversity of Michigan Medical SchoolAnn ArborMichigan
- Department of UrologyHenry Ford Health SystemDetroitMichigan
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23
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Maxwell PJ, Neisen J, Messenger J, Waugh DJJ. Tumor-derived CXCL8 signaling augments stroma-derived CCL2-promoted proliferation and CXCL12-mediated invasion of PTEN-deficient prostate cancer cells. Oncotarget 2015; 5:4895-908. [PMID: 24970800 PMCID: PMC4148108 DOI: 10.18632/oncotarget.2052] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Impaired PTEN function is a genetic hallmark of aggressive prostate cancers (CaP) and is associated with increased CXCL8 expression and signaling. The current aim was to further characterize biological responses and mechanisms underpinning CXCL8-promoted progression of PTEN-depleted prostate cancer, focusing on characterizing the potential interplay between CXCL8 and other disease-promoting chemokines resident within the prostate tumor microenvironment. Autocrine CXCL8-stimulation (i) increased expression of CXCR1 and CXCR2 in PTEN-deficient CaP cells suggesting a self-potentiating signaling axis and (ii) induced expression of CXCR4 and CCR2 in PTEN-wild-type and PTEN-depleted CaP cells. In contrast, paracrine CXCL8 signaling induced expression and secretion of the chemokines CCL2 and CXCL12 from prostate stromal WPMY-1 fibroblasts and monocytic macrophage-like THP-1 cells. In vitro studies demonstrated functional co-operation of tumor-derived CXCL8 with stromal-derived chemokines. CXCL12-induced migration of PC3 cells and CCL2-induced proliferation of prostate cancer cells were dependent upon intrinsic CXCL8 signaling within the prostate cancer cells. For example, in co-culture experiments, CXCL12/CXCR4 signaling but not CCL2/CCR2 signaling supported fibroblast-mediated migration of PC3 cells while CXCL12/CXCR4 and CCL2/CCR2 signaling underpinned monocyte-enhanced migration of PC3 cells. Combined inhibition of both CXCL8 and CXCL12 signaling was more effective in inhibiting fibroblast-promoted cell motility while repression of CXCL8 attenuated CCL2-promoted proliferation of prostate cancer cells. We conclude that tumor-derived CXCL8 signaling from PTEN-deficient tumor cells increases the sensitivity and responsiveness of CaP cells to stromal chemokines by concurrently upregulating receptor expression in cancer cells and inducing stromal chemokine synthesis. Combined chemokine targeting may be required to inhibit their multi-faceted actions in promoting the invasion and proliferation of aggressive CaP.
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Affiliation(s)
- Pamela J Maxwell
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| | - Jessica Neisen
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| | - Johanna Messenger
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| | - David J J Waugh
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
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24
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Mutation detection in formalin-fixed prostate cancer biopsies taken at the time of diagnosis using next-generation DNA sequencing. J Clin Pathol 2015; 68:212-7. [DOI: 10.1136/jclinpath-2014-202754] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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25
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Shtivelman E, Beer TM, Evans CP. Molecular pathways and targets in prostate cancer. Oncotarget 2014; 5:7217-59. [PMID: 25277175 PMCID: PMC4202120 DOI: 10.18632/oncotarget.2406] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 08/28/2014] [Indexed: 12/12/2022] Open
Abstract
Prostate cancer co-opts a unique set of cellular pathways in its initiation and progression. The heterogeneity of prostate cancers is evident at earlier stages, and has led to rigorous efforts to stratify the localized prostate cancers, so that progression to advanced stages could be predicted based upon salient features of the early disease. The deregulated androgen receptor signaling is undeniably most important in the progression of the majority of prostate tumors. It is perhaps because of the primacy of the androgen receptor governed transcriptional program in prostate epithelium cells that once this program is corrupted, the consequences of the ensuing changes in activity are pleotropic and could contribute to malignancy in multiple ways. Following localized surgical and radiation therapies, 20-40% of patients will relapse and progress, and will be treated with androgen deprivation therapies. The successful development of the new agents that inhibit androgen signaling has changed the progression free survival in hormone resistant disease, but this has not changed the almost ubiquitous development of truly resistant phenotypes in advanced prostate cancer. This review summarizes the current understanding of the molecular pathways involved in localized and metastatic prostate cancer, with an emphasis on the clinical implications of the new knowledge.
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Affiliation(s)
| | - Tomasz M. Beer
- Oregon Health & Science University, Knight Cancer Institute, Portland, OR
| | - Christopher P. Evans
- Department of Urology and Comprehensive Cancer Center, University of California Davis, Davis, CA
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26
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Khani F, Mosquera JM, Park K, Blattner M, O'Reilly C, MacDonald TY, Chen Z, Srivastava A, Tewari AK, Barbieri CE, Rubin MA, Robinson BD. Evidence for molecular differences in prostate cancer between African American and Caucasian men. Clin Cancer Res 2014; 20:4925-34. [PMID: 25056375 DOI: 10.1158/1078-0432.ccr-13-2265] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE The aim of this study was to compare the frequency of ERG rearrangement, PTEN deletion, SPINK1 overexpression, and SPOP mutation in prostate cancer in African American and Caucasian men. EXPERIMENTAL DESIGN Dominant tumor nodules from radical prostatectomy specimens of 105 African American men (AAM) were compared with 113 dominant nodules from Caucasian men (CaM). Clinical and pathologic characteristics of the two groups were similar. SPINK1 overexpression was evaluated by immunohistochemistry, ERG rearrangement and PTEN deletion by FISH, and SPOP mutation by Sanger sequencing. RESULTS ERG rearrangement was identified in 48 of 113 tumors (42.5%) in CaM and 29 of 105 tumors (27.6%) in AAM (P = 0.024). PTEN deletion was seen in 19 of 96 tumors (19.8%) in CaM and 7 of 101 tumors (6.9%) in AAM (P = 0.011). SPINK1 overexpression was present in 9 of 110 tumors (8.2%) in CaM and 25 of 105 tumors (23.4%) in AAM (P = 0.002). SPOP mutation was identified in 8 of 78 (10.3%) tumors in CaM and 4 of 88 (4.5%) tumors in AAM (P = 0.230). When adjusted for age, body mass index, Gleason score, and pathologic stage, ERG rearrangement and SPINK1 overexpression remain significantly different (P = 0.018 and P = 0.008, respectively), and differences in PTEN deletion and SPOP mutation approach significance (P = 0.061 and P = 0.087, respectively). CONCLUSIONS Significant molecular differences exist between prostate cancers in AAM and CaM. SPINK1 overexpression, an alteration associated with more aggressive prostate cancers, was more frequent in AAM, whereas ERG rearrangement and PTEN deletion were less frequent in this cohort. Further investigation is warranted to determine whether these molecular differences explain some of the disparity in incidence and mortality between these two ethnic groups.
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Affiliation(s)
- Francesca Khani
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Juan Miguel Mosquera
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York. Institute for Precision Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Kyung Park
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Mirjam Blattner
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Catherine O'Reilly
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Theresa Y MacDonald
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Zhengming Chen
- Department of Public Health, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Abhishek Srivastava
- Department of Urology, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Ashutosh K Tewari
- Department of Urology, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Christopher E Barbieri
- Department of Urology, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Mark A Rubin
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York. Institute for Precision Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York. Department of Urology, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York
| | - Brian D Robinson
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York. Institute for Precision Medicine, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York. Department of Urology, Weill Medical College of Cornell University and New York-Presbyterian Hospital, New York, New York.
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27
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Huang KC, Alshalalfa M, Hegazy SA, Dolph M, Donnelly B, Bismar TA. The prognostic significance of combined ERG and androgen receptor expression in patients with prostate cancer managed by androgen deprivation therapy. Cancer Biol Ther 2014; 15:1120-8. [PMID: 24972028 DOI: 10.4161/cbt.29689] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
ERG and androgen receptor (AR) are known to function cooperatively in prostate cancer (PCa) progression. However, the prognostic value of combined ERG and AR expression and potential pathways are not well characterized. We assessed ERG and AR protein expression by immunohistochemistry in a cohort of 312 men with PCa diagnosed by transurethral resection of the prostate (TURP). Patients were divided into those with no prior hormonal treatment (designated as PCa/AdvPCa) vs. those with castrate-resistant PCa (CRPC) undergoing channel TURP to relieve obstructive symptoms. The expression status was correlated with various clinical-pathological parameters. The Swedish watchful-waiting cohort was used for validation and characterization of potential gene signatures associated with ERG and AR. Patients with combined ERG-positive/AR high expression profile demonstrated higher rates of PCa-specific mortality (PCSM) compared with patients with ERG-negative/AR low in patients with no prior treatment (n = 90, P = 0.032), but this was attenuated in the overall cohort which included the CRPC subgroup (n = 125, P = 0.096). The prognostic significance to PCSM was validated in the Swedish watchful waiting cohort in univariate (HR: 3.3; 95% CI: 1.9-5.6, P = 4.25E-5) and multivariate analysis (HR: 2; 95% CI: 0.97-4.1, P = 0.057), which included Gleason score. ERG/AR overexpression status characterized 152 genes signatures including WNT, PI3K/AKT and chemokine signaling pathways known to be deregulated in PCa. In conclusion, combined ERG/AR overexpression signifies a class of patients at highest-risk of PCSM with specific key genetic alteration likely responsible for disease progression. The prognostic value of combined ERG/AR overexpression and its associated genes should be further investigated as potential prognostic and therapeutic targets in prostate cancer progression.
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Affiliation(s)
- Kuo-Cheng Huang
- Department of Pathology and Laboratory Medicine; University of Calgary and Calgary Laboratory Services; Calgary, AB Canada
| | | | - Samar A Hegazy
- Department of Pathology and Laboratory Medicine; University of Calgary and Calgary Laboratory Services; Calgary, AB Canada; The Prostate Cancer Center; Calgary, AB Canada; Department of Pathology; Faculty of Medicine; Zagazig University; Zagazig, Egypt
| | - Michael Dolph
- Department of Pathology and Laboratory Medicine; University of Calgary and Calgary Laboratory Services; Calgary, AB Canada
| | - Bryan Donnelly
- Department of Urology; University of Calgary; Calgary, AB Canada; The Prostate Cancer Center; Calgary, AB Canada
| | - Tarek A Bismar
- Department of Pathology and Laboratory Medicine; University of Calgary and Calgary Laboratory Services; Calgary, AB Canada; Departments of Oncology, Biochemistry and Molecular Biology; Calgary, AB Canada; Southern Alberta Cancer Institute and Tom Baker Cancer Center; Calgary, AB Canada; The Prostate Cancer Center; Calgary, AB Canada
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28
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Smith SC, Tomlins SA. Prostate cancer SubtyPINg biomarKers and outcome: is clarity emERGing? Clin Cancer Res 2014; 20:4733-6. [PMID: 24944315 DOI: 10.1158/1078-0432.ccr-14-0818] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Molecular prostate cancer subtypes have been proposed on the basis of mutually exclusive SPINK1 and ERG overexpression, with conflicting reports on their prognostic ability. Flavin and colleagues report that SPINK1 is neither prognostic nor absolutely mutually exclusive with ERG, raising important questions about prostate cancer molecular subtyping and prognostic biomarker evaluation.
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Affiliation(s)
- Steven C Smith
- Department of Pathology, Michigan Center for Translational Pathology, University of Michigan Medical School, Ann Arbor, Michigan. Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | - Scott A Tomlins
- Department of Pathology, Michigan Center for Translational Pathology, University of Michigan Medical School, Ann Arbor, Michigan. Department of Urology, Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, Michigan. Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, Michigan.
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29
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Wang C, Wang L, Su B, Lu N, Song J, Yang X, Fu W, Tan W, Han B. Serine protease inhibitor Kazal type 1 promotes epithelial-mesenchymal transition through EGFR signaling pathway in prostate cancer. Prostate 2014; 74:689-701. [PMID: 24619958 DOI: 10.1002/pros.22787] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 01/20/2014] [Indexed: 01/06/2023]
Abstract
BACKGROUND Overexpression of serine protease inhibitor Kazal type 1 (SPINK1) defines an aggressive molecular subtype of ETS fusion-negative prostate cancer (PCa) patients in western countries. However, how SPINK1 contributes to PCa invasion and metastasis is largely unknown. METHODS Fluorescence in situ hybridization and immunohistochemistry were utilized to detect ERG rearrangement, SPINK1 expression, and EGFR aberrations in a cohort of 211 PCa patients with radical prostatectomy. Real-time quantitative PCR and Western blotting were used to study the transcript and protein expression levels. Cellular distribution of E-cadherin and vimentin were observed by immunofluorescence. Cellular function was evaluated by siRNA, transwell, and wound healing assay, respectively. RESULTS SPINK1-induced Epithelial-mesenchymal transition (EMT) in benign prostate RWPE cells, manifested by acquisition of mesenchymal morphology, alternation of EMT markers as well as migration and invasion capabilities. Knockdown of SPINK1 in 22RV1 PCa cells results in up-regulation of E-cadherin and down-regulation of vimentin. SPINK1-induced EMT is mediated by EGFR, in which MAPK/MEK/ERK pathway is mainly involved. Connective tissue growth factor (CTGF) might be an important down-stream molecule of SPINK1-EGFR axis. Clinically, SPINK1 and EGFR were significantly co-overexpressed in a cohort of Chinese PCa patients (n > 200). SPINK1 is an unfavorable prognostic factor in Chinese PCas (P = 0.025). CONCLUSIONS These findings suggest that SPINK1 promotes EMT through EGFR signaling pathway in PCa and SPINK1 could be a new prognostic marker in Chinese PCas.
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Affiliation(s)
- Chunni Wang
- Department of Pathology, Shandong University Medical School, Jinan, China
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30
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Flavin R, Pettersson A, Hendrickson WK, Fiorentino M, Finn S, Kunz L, Judson GL, Lis R, Bailey D, Fiore C, Nuttall E, Martin NE, Stack E, Penney KL, Rider JR, Sinnott J, Sweeney C, Sesso HD, Fall K, Giovannucci E, Kantoff P, Stampfer M, Loda M, Mucci LA. SPINK1 protein expression and prostate cancer progression. Clin Cancer Res 2014; 20:4904-11. [PMID: 24687926 DOI: 10.1158/1078-0432.ccr-13-1341] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE SPINK1 overexpression has been described in prostate cancer and is linked with poor prognosis in many cancers. The objective of this study was to characterize the association between SPINK1 overexpression and prostate cancer-specific survival. EXPERIMENTAL DESIGN The study included 879 participants in the U.S. Physicians' Health Study and Health Professionals Follow-Up Study, diagnosed with prostate cancer (1983-2004) and treated by radical prostatectomy. Protein tumor expression of SPINK1 was evaluated by immunohistochemistry on tumor tissue microarrays. RESULTS Seventy-four of 879 (8%) prostate cancer tumors were SPINK1 positive. Immunohistochemical data were available for PTEN, p-Akt, pS6, stathmin, androgen receptor (AR), and ERG (as a measure of the TMPRSS2:ERG translocation). Compared with SPINK1-negative tumors, SPINK1-positive tumors showed higher PTEN and stathmin expression, and lower expression of AR (P < 0.01). SPINK1 overexpression was seen in 47 of 427 (11%) ERG-negative samples and in 19 of 427 (4%) ERG-positive cases (P = 0.0003). We found no significant associations between SPINK1 status and Gleason grade or tumor stage. There was no association between SPINK1 expression and biochemical recurrence (P = 0.56). Moreover, there was no association between SPINK1 expression and prostate cancer mortality (there were 75 lethal cases of prostate cancer during a mean of 13.5 years follow-up; HR = 0.71; 95% confidence interval, 0.29-1.76). CONCLUSIONS Our results suggest that SPINK1 protein expression may not be a predictor of recurrence or lethal prostate cancer amongst men treated by radical prostatectomy. SPINK1 and ERG protein expression do not seem to be entirely mutually exclusive, as some previous studies have suggested.
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Affiliation(s)
- Richard Flavin
- Center for Molecular Oncologic Pathology; Departments of Department of Histopathology, St. James's Hospital and Trinity College Dublin Medical School, Dublin, Ireland
| | - Andreas Pettersson
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | - Whitney K Hendrickson
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | | | - Stephen Finn
- Center for Molecular Oncologic Pathology; Departments of Department of Histopathology, St. James's Hospital and Trinity College Dublin Medical School, Dublin, Ireland
| | - Lauren Kunz
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | - Gregory L Judson
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | - Rosina Lis
- Center for Molecular Oncologic Pathology; Departments of
| | - Dyane Bailey
- Center for Molecular Oncologic Pathology; Departments of
| | | | - Elizabeth Nuttall
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | | | - Edward Stack
- Center for Molecular Oncologic Pathology; Departments of
| | - Kathryn L Penney
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | - Jennifer R Rider
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | - Jennifer Sinnott
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | | | - Howard D Sesso
- Division of Preventive Medicine, Brigham and Women's Hospital
| | - Katja Fall
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | - Edward Giovannucci
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | | | - Meir Stampfer
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
| | - Massimo Loda
- Center for Molecular Oncologic Pathology; Departments of Medical Oncology and
| | - Lorelei A Mucci
- Channing Division of Network Medicine, Department of Medicine; Department of Epidemiology, Harvard School of Public Health; and
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31
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Cysteine- rich secretory protein 3 (CRISP3), ERG and PTEN define a molecular subtype of prostate cancer with implication to patients' prognosis. J Hematol Oncol 2014; 7:21. [PMID: 24606912 PMCID: PMC3975646 DOI: 10.1186/1756-8722-7-21] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 03/03/2014] [Indexed: 11/10/2022] Open
Abstract
Cysteine- rich secretory protein 3 (CRISP3) prognostic significance in prostate cancer (PCA) has generated mixed result. Herein, we investigated and independently validated CRISP3 expression in relation to ERG and PTEN genomic aberrations and clinical outcome. CRISP3 protein expression was examined by immunohistochemistry using a cohort of patients with localized PCA (n = 215) and castration resistant PCA (CRPC) (n = 46). The Memorial Sloan Kettering (MSKCC) and Swedish cohorts were used for prognostic validation. Results showed, CRISP3 protein intensity to be significantly associated with neoplastic epithelium, being highest in CRPC vs. benign prostate tissue (p < 0.0001), but was not related to Gleason score (GS). CRISP3 mRNA was significantly associated with higher GS (p = 0.022 in MSKCC, p = 1.1e-4 in Swedish). Significant association between CRISP3 expression and clinical outcome was documented at the mRNA but not the protein expression levels. CRISP3 mRNA expression was related to biochemical recurrence in the MSKCC (p = 0.038) and lethal disease in the Swedish cohort (p = 0.0086) and retained its prognostic value in the subgroup of patients with GS 6 & 7. Furthermore, CRISP3 protein and mRNA expression was significantly associated with positive ERG status and with PTEN deletions. Functional biology analysis documented phenylalanine metabolism as the most significant pathway governing high CRISP3 and ERG expression in this subtype of PCA. In conclusion, the combined status of CRISP3, ERG and PTEN define a molecular subtype of PCA with poorest and lethal outcome. Assessing their combined value may be of added value in stratifying patients into different prognostic groups and identify those with poorest clinical outcome.
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Xu B, Chevarie-Davis M, Chevalier S, Scarlata E, Zeizafoun N, Dragomir A, Tanguay S, Kassouf W, Aprikian A, Brimo F. The prognostic role of ERG immunopositivity in prostatic acinar adenocarcinoma: a study including 454 cases and review of the literature. Hum Pathol 2014; 45:488-97. [DOI: 10.1016/j.humpath.2013.10.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 10/04/2013] [Accepted: 10/10/2013] [Indexed: 10/26/2022]
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Concurrent AURKA and MYCN gene amplifications are harbingers of lethal treatment-related neuroendocrine prostate cancer. Neoplasia 2013; 15:1-10. [PMID: 23358695 DOI: 10.1593/neo.121550] [Citation(s) in RCA: 187] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 11/19/2012] [Accepted: 11/20/2012] [Indexed: 01/12/2023] Open
Abstract
Neuroendocrine prostate cancer (NEPC), also referred to as anaplastic prostate cancer, is a lethal tumor that most commonly arises in late stages of prostate adenocarcinoma (PCA) with predilection to metastasize to visceral organs. In the current study, we explore for evidence that Aurora kinase A (AURKA) and N-myc (MYCN) gene abnormalities are harbingers of treatment-related NEPC (t-NEPC). We studied primary prostate tissue from 15 hormone naïve PCAs, 51 castration-resistant prostate cancers, and 15 metastatic tumors from 72 patients at different stages of disease progression to t-NEPC, some with multiple specimens. Histologic evaluation, immunohistochemistry, and fluorescence in situ hybridization were performed and correlated with clinical variables. AURKA amplification was identified in overall 65% of PCAs (hormone naïve and treated) from patients that developed t-NEPC and in 86% of metastases. Concurrent amplification of MYCN was present in 70% of primary PCAs, 69% of treated PCAs, and 83% of metastases. In contrast, in an unselected PCA cohort, AURKA and MYCN amplifications were identified in only 5% of 169 cases. When metastatic t-NEPC was compared to primary PCA from the same patients, there was 100% concordance of ERG rearrangement, 100% concordance of AURKA amplification, and 60% concordance of MYCN amplification. In tumors with mixed features, there was also 100% concordance of ERG rearrangement and 94% concordance of AURKA and MYCN co-amplification between areas of NEPC and adenocarcinoma. AURKA and MYCN amplifications may be prognostic and predictive biomarkers, as they are harbingers of tumors at risk of progressing to t-NEPC after hormonal therapy.
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Zhang W, Hubbard A, Brunhoeber P, Wang Y, Tang L. Automated Multiplexing Quantum Dots in Situ Hybridization Assay for Simultaneous Detection of ERG and PTEN Gene Status in Prostate Cancer. J Mol Diagn 2013; 15:754-64. [DOI: 10.1016/j.jmoldx.2013.06.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 05/22/2013] [Accepted: 06/05/2013] [Indexed: 11/17/2022] Open
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Grupp K, Diebel F, Sirma H, Simon R, Breitmeyer K, Steurer S, Hube-Magg C, Prien K, Pham T, Weigand P, Michl U, Heinzer H, Kluth M, Minner S, Tsourlakis MC, Izbicki JR, Sauter G, Schlomm T, Wilczak W. SPINK1 expression is tightly linked to 6q15- and 5q21-deleted ERG-fusion negative prostate cancers but unrelated to PSA recurrence. Prostate 2013; 73:1690-8. [PMID: 23843146 DOI: 10.1002/pros.22707] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 06/13/2013] [Indexed: 11/09/2022]
Abstract
BACKGROUND The serine peptidase inhibitor, Kazal type 1 (SPINK1) has been suggested to define an aggressive molecular subtype of ERG-fusion negative prostate cancer. It was the aim of this study to further study the clinical relevance of SPINK1 expression and its relationship with other key genomic alterations of prostate cancer. METHODS A tissue microarray containing more than 10,000 prostate cancers with clinical follow-up was used for immunohistochemical SPINK1 analysis. Data on ERG status as well as PTEN, 6q, 5q, and 3p deletions were available for comparison. RESULTS SPINK1 expression was absent in benign prostate glands and detectable in 5.9% of 9,503 interpretable prostate cancers. Presence of SPINK1 expression was markedly more frequent in ERG negative (10.4%) than in ERG positive cancers (0.3%; P < 0.0001). However, SPINK1 expression was unrelated to tumor phenotype and biochemical recurrence in all cancers and in the subgroup of ERG negative cancers. Further subgroup analyses revealed, however, that--within ERG negative cancers--SPINK1 expression was significantly linked to deletions at 6q15 (P < 0.0001) and 5q21 (P = 0.0042). CONCLUSIONS Our results exclude SPINK1 as a relevant prognostic prostate cancer biomarker. However, the data demonstrate that SPINK1 overexpression is tightly linked to the small subsets of 6q15- and 5q21-deleted ERG negative prostate cancers. These findings support the concept of molecularly defined subtypes of prostate cancers.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Chromosomes, Human, Pair 5
- Chromosomes, Human, Pair 6
- Gene Deletion
- Humans
- Male
- Middle Aged
- Neoplasm Recurrence, Local/genetics
- Neoplasm Recurrence, Local/metabolism
- Neoplasm Recurrence, Local/pathology
- Prognosis
- Prostate/metabolism
- Prostate/pathology
- Prostate-Specific Antigen/blood
- Prostatic Neoplasms/genetics
- Prostatic Neoplasms/metabolism
- Prostatic Neoplasms/pathology
- Tissue Array Analysis
- Trans-Activators/genetics
- Transcriptional Regulator ERG
- Trypsin Inhibitor, Kazal Pancreatic
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Affiliation(s)
- Katharina Grupp
- General, Visceral and Thoracic Surgery Department and Clinic, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Phin S, Moore MW, Cotter PD. Genomic Rearrangements of PTEN in Prostate Cancer. Front Oncol 2013; 3:240. [PMID: 24062990 PMCID: PMC3775430 DOI: 10.3389/fonc.2013.00240] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 08/30/2013] [Indexed: 12/21/2022] Open
Abstract
The phosphatase and tensin homolog gene (PTEN) on chromosome 10q23.3 is a negative regulator of the PIK3/Akt survival pathway and is the most frequently deleted tumor suppressor gene in prostate cancer. Monoallelic loss of PTEN is present in up to 60% of localized prostate cancers and complete loss of PTEN in prostate cancer is linked to metastasis and androgen-independent progression. Studies on the genomic status of PTEN in prostate cancer initially used a two-color fluorescence in situ hybridization (FISH) assay for PTEN copy number detection in formalin fixed paraffin embedded tissue preparations. More recently, a four-color FISH assay containing two additional control probes flanking the PTEN locus with a lower false-positive rate was reported. Combined with the detection of other critical genomic biomarkers for prostate cancer such as ERG, androgen receptor, and MYC, the evaluation of PTEN genomic status has proven to be invaluable for patient stratification and management. Although less frequent than allelic deletions, point mutations in the gene and epigenetic silencing are also known to contribute to loss of PTEN function, and ultimately to prostate cancer initiation. Overall, it is clear that PTEN is a powerful biomarker for prostate cancer. Used as a companion diagnostic for emerging therapeutic drugs, FISH analysis of PTEN is promisingly moving human prostate cancer closer to more effective cancer management and therapies.
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Teng LH, Wang C, Bégin LR, Dolph M, Yilmaz A, Trpkov K, Donnelly B, Bismar TA. ERG protein expression and gene rearrangements are present at lower rates in metastatic and locally advanced castration-resistant prostate cancer compared to localized disease. Urology 2013; 82:394-9. [PMID: 23746715 DOI: 10.1016/j.urology.2013.03.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 02/20/2013] [Accepted: 03/09/2013] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To compare ERG expression and gene rearrangements rates in metastatic and castration-resistant prostate cancer (CRPC) to localized disease as ERG is the most common genetic event in early prostate cancer (PCa) with potential prognostic and therapeutic implications. METHODS We evaluated ERG protein expression in 344 patients with PCa in 3 cohorts including localized, metastatic, and castration-resistant disease using immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH). RESULTS ERG protein expression was detected exclusively in the neoplastic epithelium and was found in 6.8% and 46.3% of high-grade prostatic intraepithelial neoplasia (HGPIN) and localized PCa, respectively. In metastatic and locally advanced CRPC, ERG expression was significantly lower, occurring at 36.1% and 37.2%, respectively. In PCa with foamy gland morphology, ERG protein expression was detected in only 18.6% compared with reported rates of about 42%-48% in acinar PCa. Moreover, ERG protein expression and gene rearrangements showed an overall consistency rate of 90.6% (P <.0001). The consistency rate was 100% both in benign glands and HGPIN, and 96.1% in localized PCa. However, it was significantly lower at 76.9% and 85% in node metastatic and CRPC, respectively (P <.0001). CONCLUSION ERG protein expression is restricted to neoplastic prostatic epithelium and is present at lower rates in metastatic and CRPC compared to localized PCa. IHC and FISH concordance rates were significantly lower in node metastatic and CRPC compared to localized PCa, which may suggest different biological and therapeutic implications. The lower rate of ERG protein expression in foamy gland PCa may suggest potential differences for this pattern of PCa at the molecular level.
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Affiliation(s)
- Liang-Hong Teng
- Department of Pathology and Laboratory Medicine, University of Calgary and Calgary Laboratory Services, Calgary, Alberta, Canada
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Current World Literature. Curr Opin Urol 2013. [DOI: 10.1097/mou.0b013e3283605159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Fiandalo MV, Wu W, Mohler JL. The role of intracrine androgen metabolism, androgen receptor and apoptosis in the survival and recurrence of prostate cancer during androgen deprivation therapy. Curr Drug Targets 2013; 14:420-40. [PMID: 23565755 PMCID: PMC3991464 DOI: 10.2174/1389450111314040004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 02/21/2013] [Accepted: 02/22/2013] [Indexed: 11/22/2022]
Abstract
Prostate cancer (CaP) is the most frequently diagnosed cancer and leading cause of cancer death in American men. Almost all men present with advanced CaP and some men who fail potentially curative therapy are treated with androgen deprivation therapy (ADT). ADT is not curative and CaP recurs as the lethal phenotype. The goal of this review is to apply our current understanding of CaP and castration-recurrent CaP (CR-CaP) to earlier studies that characterized ADT and the molecular mechanisms that facilitate the transition from androgen-stimulated CaP to CR-CaP. Reexamination of earlier studies also may provide a better understanding of how more newly recognized mechanisms, such as intracrine metabolism, may be involved with the early events that allow CaP survival after initiation of ADT and subsequent development of CR-CaP.
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Affiliation(s)
- Michael V. Fiandalo
- Department of Urology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | - Wenjie Wu
- Department of Urology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | - James L. Mohler
- Department of Urology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
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Lippolis G, Edsjö A, Stenman UH, Bjartell A. A high-density tissue microarray from patients with clinically localized prostate cancer reveals ERG and TATI exclusivity in tumor cells. Prostate Cancer Prostatic Dis 2013; 16:145-50. [PMID: 23459095 PMCID: PMC3655381 DOI: 10.1038/pcan.2013.7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Prostate cancer (PCa) is characterized by high tumor heterogeneity. In 2005, the fusion between the androgen-regulated gene TMPRSS2 and members of the ETS family was discovered in prostate cancer. In particular, fusion of TMPRSS2 with ERG was found in approximately 50% of prostate cancers and considered as an early event in the onset of the disease. The prognostic value of this fusion is still contradictory. Bioinformatics showed that overexpression of SPINK1 gene in a subset of fusion-gene-negative prostate cancers was associated with a poor prognosis. In theory, overexpression of the tumor-associated trypsin inhibitor (TATI) protein encoded by SPINK1 in fusion-gene-negative tumor cells opens the way to selected treatments for genotypically different cases. However, their expression has never been assessed at the cellular level in the same tissue samples. METHODS As ERG expression has been shown to be a surrogate of fusion gene occurrence in prostate cancer, we have used double immunohistochemical staining to assess expression of ERG and TATI on a large tissue microarray comprising 4177 cases of localized prostate cancer. RESULTS We did not detect any co-expression of ERG and TATI in the same cancer cells, which confirms previous suggestions from in silico studies. ERG was associated with Gleason score (GS), surgical margins and pathological stage, but had no prognostic value in this cohort. TATI was weakly associated with pathological stage but had no significant association with outcome. CONCLUSIONS We here provide a morphological basis for ERG and TATI exclusivity in prostate cancer cells. Future therapies should be based on a combination of different targets in order to eradicate tumor cells with gene fusions and cells expressing other tumor-associated antigens. Further studies are needed to understand why ERG and TATI are not co-expressed in the same prostatic tumor cells.
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Affiliation(s)
- G Lippolis
- Division of Urological Cancers, Department of Clinical Sciences, Skåne University Hospital, Malmö, Lund University, Malmö, Sweden
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Nyquist MD, Dehm SM. Interplay between genomic alterations and androgen receptor signaling during prostate cancer development and progression. Discov Oncol 2013; 4:61-9. [PMID: 23307762 DOI: 10.1007/s12672-013-0131-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 01/02/2013] [Indexed: 02/07/2023] Open
Abstract
Advanced prostate cancer (PCa) treated with androgen deprivation therapy (ADT) eventually relapses to an ADT-resistant disease referred to as castration-resistant PCa (CRPC). Recent integrative analyses of PCa genomes have led to the elucidation of potential subtypes that are revelatory to the development of PCa as well as the mechanisms of resistance to ADT and CRPC progression. These studies have confirmed that alterations in the androgen receptor (AR) signaling axis are central to CRPC progression, and have uncovered complex mechanisms by which AR and other components of the AR signaling axis affect, and are affected by, genomic changes and epigenetic transformations. Among the most frequent alterations in CRPC are direct alterations in the AR gene. These AR gene alterations include AR amplification, point mutations, and more recently AR gene rearrangements leading to expression of truncated, constitutively active AR splice variants that are impervious to ADT. In this review, we will highlight genomic alterations that are important for development and progression of PCa, with a focus on how these alterations affect, and are affected by, activity of the AR signaling axis.
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Affiliation(s)
- Michael D Nyquist
- Masonic Cancer Center, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
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Brenner JC, Chinnaiyan AM, Tomlins SA. ETS Fusion Genes in Prostate Cancer. Prostate Cancer 2013. [DOI: 10.1007/978-1-4614-6828-8_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Bismar TA, Dolph M, Teng LH, Liu S, Donnelly B. ERG protein expression reflects hormonal treatment response and is associated with Gleason score and prostate cancer specific mortality. Eur J Cancer 2012; 48:538-46. [DOI: 10.1016/j.ejca.2012.01.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Revised: 12/22/2011] [Accepted: 01/03/2012] [Indexed: 10/14/2022]
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