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Saunders EJ, Kote-Jarai Z, Eeles RA. Identification of Germline Genetic Variants that Increase Prostate Cancer Risk and Influence Development of Aggressive Disease. Cancers (Basel) 2021; 13:760. [PMID: 33673083 PMCID: PMC7917798 DOI: 10.3390/cancers13040760] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 12/15/2022] Open
Abstract
Prostate cancer (PrCa) is a heterogeneous disease, which presents in individual patients across a diverse phenotypic spectrum ranging from indolent to fatal forms. No robust biomarkers are currently available to enable routine screening for PrCa or to distinguish clinically significant forms, therefore late stage identification of advanced disease and overdiagnosis plus overtreatment of insignificant disease both remain areas of concern in healthcare provision. PrCa has a substantial heritable component, and technological advances since the completion of the Human Genome Project have facilitated improved identification of inherited genetic factors influencing susceptibility to development of the disease within families and populations. These genetic markers hold promise to enable improved understanding of the biological mechanisms underpinning PrCa development, facilitate genetically informed PrCa screening programmes and guide appropriate treatment provision. However, insight remains largely lacking regarding many aspects of their manifestation; especially in relation to genes associated with aggressive phenotypes, risk factors in non-European populations and appropriate approaches to enable accurate stratification of higher and lower risk individuals. This review discusses the methodology used in the elucidation of genetic loci, genes and individual causal variants responsible for modulating PrCa susceptibility; the current state of understanding of the allelic spectrum contributing to PrCa risk; and prospective future translational applications of these discoveries in the developing eras of genomics and personalised medicine.
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Affiliation(s)
- Edward J. Saunders
- The Institute of Cancer Research, London SM2 5NG, UK; (Z.K.-J.); (R.A.E.)
| | - Zsofia Kote-Jarai
- The Institute of Cancer Research, London SM2 5NG, UK; (Z.K.-J.); (R.A.E.)
| | - Rosalind A. Eeles
- The Institute of Cancer Research, London SM2 5NG, UK; (Z.K.-J.); (R.A.E.)
- Royal Marsden NHS Foundation Trust, London SW3 6JJ, UK
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2
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Liu TT, Ewald JA, Ricke EA, Bell R, Collins C, Ricke WA. Modeling human prostate cancer progression in vitro. Carcinogenesis 2020; 40:893-902. [PMID: 30590461 DOI: 10.1093/carcin/bgy185] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 12/10/2018] [Indexed: 01/24/2023] Open
Abstract
Detailed mechanisms involved in prostate cancer (CaP) development and progression are not well understood. Current experimental models used to study CaP are not well suited to address this issue. Previously, we have described the hormonal progression of non-tumorigenic human prostate epithelial cells (BPH1) into malignant cells via tissue recombination. Here, we describe a method to derive human cell lines from distinct stages of CaP that parallel cellular, genetic and epigenetic changes found in patients with cancers. This BPH1-derived Cancer Progression (BCaP) model represents different stages of cancer. Using diverse analytical strategies, we show that the BCaP model reproduces molecular characteristics of CaP in human patients. Furthermore, we demonstrate that BCaP cells have altered gene expression of shared pathways with human and transgenic mouse CaP data, as well as, increasing genomic instability with TMPRSS2-ERG fusion in advanced tumor cells. Together, these cell lines represent a unique model of human CaP progression providing a novel tool that will allow the discovery and experimental validation of mechanisms regulating human CaP development and progression. This BPH1-derived Cancer Progression (BCaP) model represents different stages of cancer. The BCaP model reproduces molecular characteristics of prostate cancer. The cells have altered gene expression with TMPRSS2-ERG fusion representing a unique model for prostate cancer progression.
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Affiliation(s)
- Teresa T Liu
- Department of Urology, University of Wisconsin-Madison, Madison, WI, USA
| | - Jonathan A Ewald
- Department of Urology, University of Wisconsin-Madison, Madison, WI, USA
| | - Emily A Ricke
- Department of Urology, University of Wisconsin-Madison, Madison, WI, USA
| | - Robert Bell
- Vancouver Prostate Center, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
| | - Colin Collins
- Vancouver Prostate Center, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
| | - William A Ricke
- Department of Urology, University of Wisconsin-Madison, Madison, WI, USA
- Carbone Comprehensive Cancer Center, University of Wisconsin-Madison, Madison, WI, USA
- George M. O'Brien Center of Research Excellence, University of Wisconsin-Madison, Madison, WI, USA
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3
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Upregulation of MIIP regulates human breast cancer proliferation, invasion and migration by mediated by IGFBP2. Pathol Res Pract 2019; 215:152440. [PMID: 31078343 DOI: 10.1016/j.prp.2019.152440] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/28/2019] [Accepted: 05/05/2019] [Indexed: 01/07/2023]
Abstract
AIMS The migration and invasion inhibitory protein (MIIP) was initially discovered in a yeast two-hybrid screen for proteins that interact and inhibit the migration and invasion-promoting protein insulin-like growth factor binding protein 2 (IGFBP2). This study aims to evaluate the biological effects of MIIP in breast cancer by targeting IGFBP2. MATERIALS AND METHODS Reverse transcription quantitative real-time polymerase chain reaction and Western blotting were used to evaluate the abnormal expression of MIIP and IGFBP2 in breast cancer tissue or breast cancer cell lines. Transfection assay was used to overexpress MIIP protein in breast cancer cells. MTT assay and colony formation assay were used to detect cell viability of breast cancer cells after MIIP overexpression. Transwell and wound-healing assays were used to detect cell invasion and migration after MIIP overexpression. RESULTS MIIP was significantly decreased and IGFBP2 was significantly increased in breast cancer tissues versus para cancerous. Breast cancer tissues of HER2 overexpression and Basal-like were more significant than Luminal A and Luminal B. MIIP was obviously downregulated and IGFBP2 was upregulated in MDA-MB-231, SKBR3 and MCF-7 versus MCF-10A especially in MDA-MB-231. Cell proliferation, cell migration and cell invasion were significantly inhibited after overexpression of MIIP. IGFBP2 was downregulated after overexpression of MIIP. The effects of MIIP on cell proliferation, cell migration and invasion were significantly reversed by IGFBP2. CONCLUSION The abnormal expression of MIIP in breast cancer affects the cell biological effects. IGFBP2 was regulated via MIIP which may be associated with these biological effects. These results reveal that MIIP can be a potential target for breast cancer treatment.
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Zhou HP, Qian LX, Zhang N, Gu JJ, Ding K, Wu J, Lu ZW, Du MY, Zhu HM, Wu JZ, He X, Yin L. MIIP gene expression is associated with radiosensitivity in human nasopharyngeal carcinoma cells. Oncol Lett 2018; 15:9471-9479. [PMID: 29805670 DOI: 10.3892/ol.2018.8524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 02/07/2018] [Indexed: 12/17/2022] Open
Abstract
The present study aims to investigate the radiosensitization effect of the migration and invasion inhibitory protein (MIIP) gene on nasopharyngeal carcinoma (NPC) cells. The MIIP gene was transfected into NPC 5-8F and CNE2 cells. The level of MIIP was analyzed by quantitative reverse transcription-polymerase chain reaction analysis and western blot. The changes in radiosensitivity of the cells were analyzed by colony formation assay. The changes in cell apoptosis and cycle distribution following irradiation were detected by flow cytometry. The expression of BCL2 associated X, apoptosis regulator/B-cell lymphoma 2 was evaluated using western blot. DNA damage was analyzed by counting γ-H2AX foci. The expression levels of γ-H2AX were evaluated by immunofluorescence and western blot. In a previous study by the authors, the results indicated that the expression of MIIP gene evidently increased in MIIP-transfected 5-8F (5-8F OE) and MIIP-transfected CNE2 (CNE2 OE) cells compared with the parental or negative control cells. In the present study, the survival rate of 5-8F OE and CNE2 OE cells markedly decreased following irradiation (0, 2, 4, 6 and 8 Gy) compared with the negative control (5-8F NC and CNE2 NC) and the untreated (5-8F and CNE2) groups. The expression of MIIP was able to increase apoptosis, which resulted in G2/M cell cycle arrest and DNA damage repair was attenuated in 5-8F and CNE2 cells following irradiation as measured by the accumulation of γ-H2AX. It was indicated that MIIP expression is associated with the radiosensitivity of NPC cells and has a significant role in regulating cell radiosensitivity.
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Affiliation(s)
- Hong-Ping Zhou
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China.,Department of Radiation Oncology, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Lu-Xi Qian
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China.,Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China
| | - Nan Zhang
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China
| | - Jia-Jia Gu
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China
| | - Kai Ding
- Department of Radiation Oncology, Suqian First Hospital, Suqian, Jiangsu 223800, P.R. China
| | - Jing Wu
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China
| | - Zhi-Wei Lu
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China.,Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China
| | - Ming-Yu Du
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China
| | - Hong-Ming Zhu
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China
| | - Jian-Zhong Wu
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China.,Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Jiangsu Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China
| | - Xia He
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China.,Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China
| | - Li Yin
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China.,Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210000, P.R. China
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5
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Vargas-Rondón N, Villegas VE, Rondón-Lagos M. The Role of Chromosomal Instability in Cancer and Therapeutic Responses. Cancers (Basel) 2017; 10:cancers10010004. [PMID: 29283387 PMCID: PMC5789354 DOI: 10.3390/cancers10010004] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/22/2017] [Accepted: 12/25/2017] [Indexed: 12/31/2022] Open
Abstract
Cancer is one of the leading causes of death, and despite increased research in recent years, control of advanced-stage disease and optimal therapeutic responses remain elusive. Recent technological improvements have increased our understanding of human cancer as a heterogeneous disease. For instance, four hallmarks of cancer have recently been included, which in addition to being involved in cancer development, could be involved in therapeutic responses and resistance. One of these hallmarks is chromosome instability (CIN), a source of genetic variation in either altered chromosome number or structure. CIN has become a hot topic in recent years, not only for its implications in cancer diagnostics and prognostics, but also for its role in therapeutic responses. Chromosomal alterations are mainly used to determine genetic heterogeneity in tumors, but CIN could also reveal treatment efficacy, as many therapies are based on increasing CIN, which causes aberrant cells to undergo apoptosis. However, it should be noted that contradictory findings on the implications of CIN for the therapeutic response have been reported, with some studies associating high CIN with a better therapeutic response and others associating it with therapeutic resistance. Considering these observations, it is necessary to increase our understanding of the role CIN plays not only in tumor development, but also in therapeutic responses. This review focuses on recent studies that suggest possible mechanisms and consequences of CIN in different disease types, with a primary focus on cancer outcomes and therapeutic responses.
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Affiliation(s)
- Natalia Vargas-Rondón
- School of Biological Sciences, Universidad Pedagógica y Tecnológica de Colombia, Tunja 150003, Colombia.
| | - Victoria E Villegas
- Biology Program, Faculty of Natural Sciences and Mathematics, Universidad del Rosario, Bogotá 111221, Colombia.
| | - Milena Rondón-Lagos
- School of Biological Sciences, Universidad Pedagógica y Tecnológica de Colombia, Tunja 150003, Colombia.
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6
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Karakas C, Wang C, Deng F, Huang H, Wang D, Lee P. Molecular mechanisms involving prostate cancer racial disparity. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL UROLOGY 2017; 5:34-48. [PMID: 29181436 PMCID: PMC5698597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 10/30/2017] [Indexed: 06/07/2023]
Abstract
Prostate cancer (PCa) is the second leading cause of cancer-related deaths in the United States. The African (AA) descent has greater incidence and mortality rates of PCa as compared to Caucasian (CA) men. While socioeconomic differences across racial groups contribute to disparity in PCa, increasing evidence points that genetic and molecular alterations play important roles in racial disparities associated with PCa. In this review, we focus on genetic and molecular influences that contribute to racial disparity between AA and CA men including: androgen and estrogen receptor signaling pathways, growth factors, apoptotic proteins, genetic, genomic and epigenetic alterations. Future translational studies will identify prognostic and predictive biomarkers for AA PCa and assist in the development of new targeted-therapies specifically for AA men with PCa.
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Affiliation(s)
- Cansu Karakas
- Department of Pathology, New York University School of MedicineNew York, NY, USA
| | - Cassie Wang
- Department of Bioengineering, University of PennsylvaniaPennsylvania, PA, USA
| | - Fangming Deng
- Department of Pathology, New York University School of MedicineNew York, NY, USA
| | - Hongying Huang
- Department of Pathology, New York University School of MedicineNew York, NY, USA
| | - Dongwen Wang
- Department of Urology, First Hospital of Shanxi Medical UniversityTaiyuan, Shanxi, China
| | - Peng Lee
- Department of Pathology, New York University School of MedicineNew York, NY, USA
- Department of Urology, New York University School of MedicineNew York, NY, USA
- Department of New York Harbor Healthcare System, New York University School of MedicineNew York, NY, USA
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7
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Singh SK, Lillard JW, Singh R. Molecular basis for prostate cancer racial disparities. Front Biosci (Landmark Ed) 2017; 22:428-450. [PMID: 27814623 DOI: 10.2741/4493] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Prostate cancer (PCa) remains the most common cancer in American men. African-American (AA) men continue to have higher PCa prevalence and mortality rates compared to men in other populations. In addition to socioeconomic factors and lifestyle differences, molecular alterations contribute to this discrepancy. We summarize molecular genetics research results interrelated with the biology of PCa racial disparity. Androgen and androgen receptor (AR) pathways have long been associated with prostate growth. Racial differences have also been found among variants of genes of the enzymes involved in androgen biosynthesis and metabolism. Growth factors and their receptors are a potential cause of the disparity in PCa. Recent molecular and biotechnological approaches in the field of proteomics and genomics will greatly aid the advancement of translational research on racial disparity in PCa, which may help, in finding new prognostic markers and novel therapeutic approaches for the treatment of PCa in AA.
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Affiliation(s)
- Santosh K Singh
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - James W Lillard
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Rajesh Singh
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, Georgia 30310,
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8
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Abstract
Although prostate cancer is the most common malignancy to affect men in the Western world, the molecular mechanisms underlying its development and progression remain poorly understood. Like all cancers, prostate cancer is a genetic disease that is characterized by multiple genomic alterations, including point mutations, microsatellite variations, and chromosomal alterations such as translocations, insertions, duplications, and deletions. In prostate cancer, but not other carcinomas, these chromosome alterations result in a high frequency of gene fusion events. The development and application of novel high-resolution technologies has significantly accelerated the detection of genomic alterations, revealing the complex nature and heterogeneity of the disease. The clinical heterogeneity of prostate cancer can be partly explained by this underlying genetic heterogeneity, which has been observed between patients from different geographical and ethnic populations, different individuals within these populations, different tumour foci within the same patient, and different cells within the same tumour focus. The highly heterogeneous nature of prostate cancer provides a real challenge for clinical disease management and a detailed understanding of the genetic alterations in all cells, including small subpopulations, would be highly advantageous.
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9
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10
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Culler DD, Silberg J, Vanner-Nicely L, Ware JL, Jackson-Cook C, Bodurtha J. Factors Influencing Men's Interest in Gene Testing for Prostate Cancer Susceptibility. J Genet Couns 2015; 11:383-98. [PMID: 26142129 DOI: 10.1023/a:1016889614588] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Interest in genetic testing for inherited cancer susceptibility is high in the general population. Women at risk for BRCA1 and BRCA2 mutations represent the best-studied population undergoing genetic testing for cancer susceptibility. However, it is unclear whether factors influencing interest in genetic testing in women are directly applicable to men. We designed a study to examine factors associated with men's interest in genetic testing to identify prostate cancer susceptibility. Our sample consisted of 267 men present in waiting rooms of a urology clinic in an urban area. We examined whether the concept of "monitoring" could be used to predict the interest of men in a genetic test for prostate cancer susceptibility. Our results indicated that "monitoring" trait was positively associated with interest in genetic testing in these men, but principally for patients rather than nonpatients. Moreover we found that monitoring was associated with over estimation of risk in those men with prostate cancer. Other factors found to influence interest in genetic testing included recommendation by a doctor, family history of prostate cancer, and cost. This study indicated that interest in genetic testing and estimation of risk is influenced by a complex interaction between both psychological factors (monitoring) and nonbehavioral factors (such as patient status, cost, and doctor recommendation).
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Affiliation(s)
- Duane D Culler
- Center for Human Genetics, University Hospitals of Cleveland, Cleveland, Ohio,
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11
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Wang X, Liu H, Wang X, An Y. Clinical significance of migration and invasion inhibitor protein expression in non-small-cell lung cancer. Oncol Lett 2014; 8:2417-2422. [PMID: 25360165 PMCID: PMC4214401 DOI: 10.3892/ol.2014.2526] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 08/29/2014] [Indexed: 11/24/2022] Open
Abstract
Migration and invasion inhibitor protein (MIIP) was initially identified in a yeast two-hybrid screen. Recently, MIIP has emerged as a key protein in regulating cell migration and invasion. However, the MIIP expression profile in non-small-cell lung cancer (NSCLC) has not been analyzed. In the present study, MIIP mRNA expression levels were evaluated using the SYBR Green quantitative real-time polymerase chain reaction method in 37 NSCLC specimens and matched normal tissue samples. MIIP protein expression in a further 94 NSCLC specimens was examined with immunohistochemistry. Patient survival data were collected retrospectively, and the association between MIIP protein expression and the five-year overall survival rate was evaluated. The results revealed that MIIP mRNA and protein expression were downregulated in cancer tissues, as compared with the matched normal tissues. MIIP expression levels were significantly associated with pathology and tumor stage, with reduced MIIP mRNA expression levels detected in advanced tumor stage samples. Furthermore, patients with MIIP-positive protein expression had an improved prognosis as compared with those patients with MIIP-negative protein expression, with five-year survival rates of 41.7 and 22.4%, respectively (Kaplan-Meier, log-rank, P=0.028). A significant association between MIIP protein expression and improved prognosis was also demonstrated using univariate and multivariate analyses (P=0.033 and P=0.040, respectively). These results suggest that MIIP may have a potential role in the pathogenesis of NSCLC and also confirm that MIIP is a putative tumor-suppressor gene. Therefore, MIIP may be identified as a functional genetic marker of NSCLC development and prognosis, and may be an attractive therapeutic target for the treatment of lung cancer.
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Affiliation(s)
- Xinhua Wang
- Department of Oncology, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, Liaoning 121000, P.R. China
| | - Hongling Liu
- Department of Respiratory Internal Medicine, Qingzhou People's Hospital, Qinzhou, Shandong 262500, P.R. China
| | - Xiaoyu Wang
- Department of Oncology, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, Liaoning 121000, P.R. China
| | - Yuzhi An
- Department of Oncology, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, Liaoning 121000, P.R. China
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12
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Eeles R, Goh C, Castro E, Bancroft E, Guy M, Al Olama AA, Easton D, Kote-Jarai Z. The genetic epidemiology of prostate cancer and its clinical implications. Nat Rev Urol 2014; 11:18-31. [PMID: 24296704 DOI: 10.1038/nrurol.2013.266] [Citation(s) in RCA: 177] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Worldwide, familial and epidemiological studies have generated considerable evidence of an inherited component to prostate cancer. Indeed, rare highly penetrant genetic mutations have been implicated. Genome-wide association studies (GWAS) have also identified 76 susceptibility loci associated with prostate cancer risk, which occur commonly but are of low penetrance. However, these mutations interact multiplicatively, which can result in substantially increased risk. Currently, approximately 30% of the familial risk is due to such variants. Evaluating the functional aspects of these variants would contribute to our understanding of prostate cancer aetiology and would enable population risk stratification for screening. Furthermore, understanding the genetic risks of prostate cancer might inform predictions of treatment responses and toxicities, with the goal of personalized therapy. However, risk modelling and clinical translational research are needed before we can translate risk profiles generated from these variants into use in the clinical setting for targeted screening and treatment.
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Affiliation(s)
- Rosalind Eeles
- Oncogenetics Team, Division of Cancer Genetics and Epidemiology, The Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey SM2 5NG, UK
| | - Chee Goh
- Oncogenetics Team, Division of Cancer Genetics and Epidemiology, The Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey SM2 5NG, UK
| | - Elena Castro
- Oncogenetics Team, Division of Cancer Genetics and Epidemiology, The Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey SM2 5NG, UK
| | - Elizabeth Bancroft
- Clinical Academic Cancer Genetics Unit, The Royal Marsden NHS Foundation Trust, Sutton, Surrey SM2 5PT, UK
| | - Michelle Guy
- Oncogenetics Team, Division of Cancer Genetics and Epidemiology, The Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey SM2 5NG, UK
| | - Ali Amin Al Olama
- Cancer Research UK Centre for Cancer Genetic Epidemiology, Strangeways Laboratory, University of Cambridge, Cambridge CB1 8RN, UK
| | - Douglas Easton
- Departments of Public Health & Primary Care and Oncology, Strangeways Laboratory, University of Cambridge, Cambridge CB1 8RN, UK
| | - Zsofia Kote-Jarai
- Oncogenetics Team, Division of Cancer Genetics and Epidemiology, The Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey SM2 5NG, UK
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13
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Mazaris E, Tsiotras A. Molecular pathways in prostate cancer. Nephrourol Mon 2013; 5:792-800. [PMID: 24282788 PMCID: PMC3830904 DOI: 10.5812/numonthly.9430] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Accepted: 12/17/2012] [Indexed: 01/02/2023] Open
Abstract
Objectives Prostate cancer is a prevalent disease with a high impact on patients’ morbidity and mortality. Despite efforts to profile prostate cancer, the genetic alterations and biological processes that correlate with disease progression remain partially elusive. The purpose of this study is to review the recent evidence relating to the initiation and progression of prostate cancer in relation to the familial correlation of the disease, the genetic aberrations resulting in prostate cancer and the new molecular biology data regarding prostate cancer. Materials and Methods A Medline database search identified all the existing publications on the molecular events associated with the pathogenesis and evolution of prostate cancer. Particular emphasis was given on the specific genetic phenomena associated with prostate cancer. Results Like other cancers, prostate cancer is caused by an accumulation of genetic alterations in a cell that drives it to malignant growth. Specific genes and gene alterations have been suggested to play a role in its development and progression. Aneuploidy, loss of heterozygosity, gene mutations, hypermethylation and inactivation of specific tumour suppressor genes such as GSTpi, APC, MDR1, GPX3 and others have been detected in prostate cancers, but generally only at a low or moderate frequency. The androgen receptor (AR) signalling pathway may play a crucial role in the early development of prostate cancer, as well as in the development of androgen-independent disease that fails to respond to hormone deprivation therapies. Other alterations linked to the transition to hormone-independence include amplification of MYC and increased expression of ERBB2 and BCL2. Inflammatory changes may also contribute to the development of prostate cancer. Conclusion The identification of specific molecular markers for prostate cancer may lead to its earliest detection and better prediction of its behavior. The better understanding of the molecular events affecting prostate cancer progression may result in the introduction of new drugs to target these events thus providing a potential cure and a tool for prevention of this very common disease.
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Affiliation(s)
| | - Alexios Tsiotras
- Urology Department, Lister Hospital, Stevenage, United Kingdom
- Corresponding author: Alexios Tsiotras, Urology Department, Lister Hospital, Stevenage, United Kingdom. Tel: +44-7580348549, Fax: +44-1438515601, E-mail:
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14
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Ledet EM, Hu X, Sartor O, Rayford W, Li M, Mandal D. Characterization of germline copy number variation in high-risk African American families with prostate cancer. Prostate 2013; 73:614-23. [PMID: 23060098 DOI: 10.1002/pros.22602] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Accepted: 09/10/2012] [Indexed: 01/24/2023]
Abstract
BACKGROUND Prostate cancer is a complex multi-allelic disease and the most common malignancy in men. The incidence of prostate cancer in African American men is more than twice as high as that of any other race. Despite the high prevalence of prostate cancer amongst African American men, this population has been under represented in genetic studies of prostate cancer. Although genomic copy number variations (CNVs) have been detected in prostate tumors, this is the first study describing germline CNVs in African American hereditary prostate cancer families. METHODS Ten high-risk African American families with three or more affected individuals and with an early age of onset were recruited. From these families, 37 individuals, including 23 affected males, and 14 unaffected males, were selected for CNV analysis. Array comparative genomic hybridization was used to characterize germline CNVs unique to African American men with hereditary prostate cancer. RESULTS Through common aberration analysis in affected family members; novel CNVs were identified at chromosomes 1p36.13 and 16q23.3. Differential analysis comparing affected and unaffected family members identified 9.4 kb duplication on chromosome 14q32.33 which segregate with prostate cancer patients in these high-risk families. CONCLUSIONS The duplication at 14q32.33 encompasses IGHG3 gene which has been shown to have both significant gains in copy number as well as overexpression in prostate tumors in African Americans. These CNVs may represent a component of genetic predisposition which contributes to the high prevalence and mortality of prostate cancer in African American men.
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Affiliation(s)
- Elisa M Ledet
- Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana 70112, USA
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Taherian N, Hamel N, Bégin LR, Bismar TA, Goldgar DE, Feng BJ, Foulkes WD. Familial prostate cancer: the damage done and lessons learnt. Nat Rev Urol 2013; 10:116-22. [PMID: 23318356 DOI: 10.1038/nrurol.2012.257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND A 51-year-old French Canadian man presented to his family physician owing to an extensive family history of prostate cancer in five brothers, his father and two paternal uncles. His serum PSA level was 4.9 ng/ml and a six-core biopsy revealed the presence of a prostate adenocarcinoma with a Gleason score of 7 (3+4). He was treated with radical prostatectomy. Repeat PSA tests revealed a gradual rise in PSA levels despite androgen deprivation therapy with bicalutamide and goserelin over the course of 3 years. Genetic evaluation was undertaken in view of his personal and family history. The proband died at the age of 58 years of widespread metastasis. INVESTIGATIONS PSA testing, six-core biopsy, genetic counselling and mutation analysis for French Canadian founder mutations in the BRCA1 and BRCA2 genes, histopathological review of tumour tissue from family members, examination of loss of heterozygosity at the BRCA2 gene locus, immunohistochemistry to determine the expression of the ERG nuclear oncoprotein in prostate tumours, genotyping with eight selected risk-associated single nucleotide polymorphisms, Doppler ultrasonography of the leg, CT of the abdomen and pelvis with intravenous and oral contrast, chest CT with intravenous contrast for the assessment of metastatic prostate cancer, genetic testing for the G84E variant in the HOXB13 gene. DIAGNOSIS Early-onset and aggressive prostate cancer associated with a nonsense French Canadian BRCA2 founder mutation, c.5857G>T (p.Glu1953(*)). MANAGEMENT Radical prostatectomy, hormone therapy with bicalutamide and goserelin, palliative chemotherapy initially with docetaxel plus prednisone then with mitoxantrone plus prednisone, as well as genetic counselling and testing for the proband and his family members.
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Affiliation(s)
- Nassim Taherian
- Department of Medical Genetics, Research Institute of McGill University Health Centre, Montreal, QC H3G 1A4, Canada
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Diagnostic value of DNA alteration: loss of heterozygosity or allelic imbalance-promising for molecular staging of prostate cancers. Med Oncol 2013; 30:391. [PMID: 23288724 PMCID: PMC3586396 DOI: 10.1007/s12032-012-0391-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2012] [Accepted: 11/21/2012] [Indexed: 01/12/2023]
Abstract
The biological behavior of prostate cancer is uncertain, and therefore, search for molecular prognostic markers associated with disease progression seems to be essential. We performed microsatellite allelotyping of DNA isolated from primary prostate tumors biopsies (prostate adenocarcinoma, PCa). We evaluated the frequency of allelic imbalance (AI), including loss of heterozygosity and/or microsatellite imbalance (LOH/MSI) as well as the association of these DNA alterations with clinicopathological variables. We assessed the significance of LOH/MSI alterations in selected imprinted and non-imprinted chromosomal regions (IR and NIR) in PCa. A total of 50 biopsies of prostate tumor (containing >75 % tumor cells) were histologically examined confirming prostate carcinoma. Microsatellite allelotyping using 16 microsatellite markers linked to the following chromosomal regions: 1p31.2, 3p21.3–25.3, 7q32.2, 9p21.3, 11p15.5, 12q23.2, and 16q22.1 was performed. The incidence of LOH/MSI alterations in prostate tumor cells was the highest for chromosomal regions 7q32.2 and 16q22.1 (31.25 and 26.60 %, respectively), followed by 1p31.2 and 3p21.3–25.3 (26.50 and 17.40 %, respectively). Statistically significant increase in LOH/MSI alterations has been observed for markers: D1S2137 (1p region; p = 0.00032), D9S974 (9p region; p = 0.0017), and D16S3025 (16q region; p = 0.0017). Statistically significant differences in frequency of LOH/MSI alterations in particular chromosomal regions have been found for 1p31.2, 7q32.2 and 16q22.1 (p = 0.027, p = 0.012 and p = 0.031, respectively). We documented statistically significant association between Fractional Allele Loss (FAL) index and advanced tumor stage (p < 0.05). We suggest that genomic instability of LOH/MSI type is a frequent event in prostate carcinogenesis and assessed as FAL index has clinical value for the molecular staging of prostate cancer in (TRUS)-guided prostate biopsy material.
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Bambury RM, Gallagher DJ. Prostate cancer: germline prediction for a commonly variable malignancy. BJU Int 2012; 110:E809-18. [PMID: 22974436 DOI: 10.1111/j.1464-410x.2012.11450.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
UNLABELLED What's known on the subject? and What does the study add? Prostate cancer is a heterogeneous disease and biomarkers to predict its incidence and subsequent clinical behaviour are needed to tailor screening, prevention and therapeutic strategies. Rare mutations in genes such as BRCA1, BRCA2 and HOXB13 can affect prostate cancer incidence and/or clinical behaviour. Genome wide association studies (GWAS) have identified more common genetic variations that explain an estimated 20% of familial prostate cancer risk. In this review, we focus on the potential of germline genetic variation to provide biomarkers for prostate cancer screening, prevention and management. We discuss how germline genetics may have a role in treatment selection if reliable pharmacogenetic predictors of efficacy and toxicity can be identified. We have outlined possible mechanisms for including germline investigation in future prostate cancer clinical trials. OBJECTIVES • Prostate cancer is a heterogeneous disease and biomarkers to predict its incidence and subsequent clinical behaviour are needed to tailor screening, prevention and therapeutic strategies. • In this review we focus on the potential of germline genetic variation to provide these biomarkers. METHODS • We review the published literature on germline genetics in prostate cancer and examine the possibility of including germline genetic biomarkers in future prostate cancer clinical trials. RESULTS • Rare mutations in genes such as BRCA1, BRCA2 and HOXB13 can affect prostate cancer incidence and/or clinical behaviour. • Genome-wide association studies (GWAS) have identified more common genetic variations that explain an estimated 20% of familial prostate cancer risk. • Germline genetics may have a role in treatment selection, if reliable pharmacogenetic predictors of efficacy and toxicity can be identified. CONCLUSION • This rapidly emerging area of prostate cancer research may provide answers to current clinical conundrums in the prostate cancer treatment paradigm. We have outlined possible mechanisms for including germline investigation in future prostate cancer clinical trial design.
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Affiliation(s)
- Richard M Bambury
- Department of Medical Oncology, Mater Misericordiae University Hospital and St James's Hospital, Dublin, Ireland.
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Genetic heterogeneity in Finnish hereditary prostate cancer using ordered subset analysis. Eur J Hum Genet 2012; 21:437-43. [PMID: 22948022 DOI: 10.1038/ejhg.2012.185] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Prostate cancer (PrCa) is the most common male cancer in developed countries and the second most common cause of cancer death after lung cancer. We recently reported a genome-wide linkage scan in 69 Finnish hereditary PrCa (HPC) families, which replicated the HPC9 locus on 17q21-q22 and identified a locus on 2q37. The aim of this study was to identify and to detect other loci linked to HPC. Here we used ordered subset analysis (OSA), conditioned on nonparametric linkage to these loci to detect other loci linked to HPC in subsets of families, but not the overall sample. We analyzed the families based on their evidence for linkage to chromosome 2, chromosome 17 and a maximum score using the strongest evidence of linkage from either of the two loci. Significant linkage to a 5-cM linkage interval with a peak OSA nonparametric allele-sharing LOD score of 4.876 on Xq26.3-q27 (ΔLOD=3.193, empirical P=0.009) was observed in a subset of 41 families weakly linked to 2q37, overlapping the HPCX1 locus. Two peaks that were novel to the analysis combining linkage evidence from both primary loci were identified; 18q12.1-q12.2 (OSA LOD=2.541, ΔLOD=1.651, P=0.03) and 22q11.1-q11.21 (OSA LOD=2.395, ΔLOD=2.36, P=0.006), which is close to HPC6. Using OSA allows us to find additional loci linked to HPC in subsets of families, and underlines the complex genetic heterogeneity of HPC even in highly aggregated families.
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Bailey-Wilson JE, Childs EJ, Cropp CD, Schaid DJ, Xu J, Camp NJ, Cannon-Albright LA, Farnham JM, George A, Powell I, Carpten JD, Giles GG, Hopper JL, Severi G, English DR, Foulkes WD, Mæhle L, Møller P, Eeles R, Easton D, Guy M, Edwards S, Badzioch MD, Whittemore AS, Oakley-Girvan I, Hsieh CL, Dimitrov L, Stanford JL, Karyadi DM, Deutsch K, McIntosh L, Ostrander EA, Wiley KE, Isaacs SD, Walsh PC, Thibodeau SN, McDonnell SK, Hebbring S, Lange EM, Cooney KA, Tammela TLJ, Schleutker J, Maier C, Bochum S, Hoegel J, Grönberg H, Wiklund F, Emanuelsson M, Cancel-Tassin G, Valeri A, Cussenot O, Isaacs WB. Analysis of Xq27-28 linkage in the international consortium for prostate cancer genetics (ICPCG) families. BMC MEDICAL GENETICS 2012; 13:46. [PMID: 22712434 PMCID: PMC3495053 DOI: 10.1186/1471-2350-13-46] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Accepted: 04/30/2012] [Indexed: 11/20/2022]
Abstract
BACKGROUND Genetic variants are likely to contribute to a portion of prostate cancer risk. Full elucidation of the genetic etiology of prostate cancer is difficult because of incomplete penetrance and genetic and phenotypic heterogeneity. Current evidence suggests that genetic linkage to prostate cancer has been found on several chromosomes including the X; however, identification of causative genes has been elusive. METHODS Parametric and non-parametric linkage analyses were performed using 26 microsatellite markers in each of 11 groups of multiple-case prostate cancer families from the International Consortium for Prostate Cancer Genetics (ICPCG). Meta-analyses of the resultant family-specific linkage statistics across the entire 1,323 families and in several predefined subsets were then performed. RESULTS Meta-analyses of linkage statistics resulted in a maximum parametric heterogeneity lod score (HLOD) of 1.28, and an allele-sharing lod score (LOD) of 2.0 in favor of linkage to Xq27-q28 at 138 cM. In subset analyses, families with average age at onset less than 65 years exhibited a maximum HLOD of 1.8 (at 138 cM) versus a maximum regional HLOD of only 0.32 in families with average age at onset of 65 years or older. Surprisingly, the subset of families with only 2-3 affected men and some evidence of male-to-male transmission of prostate cancer gave the strongest evidence of linkage to the region (HLOD = 3.24, 134 cM). For this subset, the HLOD was slightly increased (HLOD = 3.47 at 134 cM) when families used in the original published report of linkage to Xq27-28 were excluded. CONCLUSIONS Although there was not strong support for linkage to the Xq27-28 region in the complete set of families, the subset of families with earlier age at onset exhibited more evidence of linkage than families with later onset of disease. A subset of families with 2-3 affected individuals and with some evidence of male to male disease transmission showed stronger linkage signals. Our results suggest that the genetic basis for prostate cancer in our families is much more complex than a single susceptibility locus on the X chromosome, and that future explorations of the Xq27-28 region should focus on the subset of families identified here with the strongest evidence of linkage to this region.
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Affiliation(s)
- Joan E Bailey-Wilson
- Inherited Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Baltimore, MD, 21224, USA
- African American Hereditary Prostate Cancer ICPCG Group, Phoenix, AZ, USA
- University of Tampere ICPCG Group, Tampere, Finland
| | - Erica J Childs
- Inherited Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Baltimore, MD, 21224, USA
- Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Cheryl D Cropp
- Inherited Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Daniel J Schaid
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, 55905, USA
| | - Jianfeng Xu
- Data Coordinating Center for the ICPCG and Center for Human Genomics, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA
| | - Nicola J Camp
- University of Utah ICPCG Group and Division of Genetic Epidemiology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Lisa A Cannon-Albright
- University of Utah ICPCG Group and Division of Genetic Epidemiology, University of Utah School of Medicine, Salt Lake City, UT, USA
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, UT, USA
| | - James M Farnham
- University of Utah ICPCG Group and Division of Genetic Epidemiology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Asha George
- Inherited Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Baltimore, MD, 21224, USA
- African American Hereditary Prostate Cancer ICPCG Group, Phoenix, AZ, USA
- Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Isaac Powell
- African American Hereditary Prostate Cancer ICPCG Group, Phoenix, AZ, USA
- Karmanos Cancer Institute, Wayne State University, Detroit, MI, USA
| | - John D Carpten
- African American Hereditary Prostate Cancer ICPCG Group, Phoenix, AZ, USA
- Translational Genomics Research Institute, Genetic Basis of Human Disease Research Division, Phoenix, AZ, USA
| | - Graham G Giles
- ACTANE consortium
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, School of Population Health, The University of Melbourne, Melbourne, Australia
| | - John L Hopper
- ACTANE consortium
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, School of Population Health, The University of Melbourne, Melbourne, Australia
| | - Gianluca Severi
- ACTANE consortium
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, School of Population Health, The University of Melbourne, Melbourne, Australia
| | - Dallas R English
- ACTANE consortium
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, School of Population Health, The University of Melbourne, Melbourne, Australia
| | - William D Foulkes
- ACTANE consortium
- Program in Cancer Genetics, McGill University, Montreal, QC, Canada
| | - Lovise Mæhle
- ACTANE consortium
- Department of Medical Genetics, Oslo University Hospital, The Norwegian Radium Hospital, Oslo,Norway
| | - Pål Møller
- ACTANE consortium
- Department of Medical Genetics, Oslo University Hospital, The Norwegian Radium Hospital, Oslo,Norway
| | - Rosalind Eeles
- ACTANE consortium
- Institute of Cancer Research and Royal Marsden NHS Foundation Trust, Surrey, UK
| | - Douglas Easton
- ACTANE consortium
- Cancer Research UK Genetic Epidemiology Unit, Cambridge, UK
| | - Michelle Guy
- ACTANE consortium
- Institute of Cancer Research and Royal Marsden NHS Foundation Trust, Surrey, UK
| | - Steve Edwards
- ACTANE consortium
- Institute of Cancer Research and Royal Marsden NHS Foundation Trust, Surrey, UK
| | - Michael D Badzioch
- ACTANE consortium
- Division of Medical Genetics, University of Washington Medical Center, Seattle, WA, USA
| | - Alice S Whittemore
- BC/CA/HI ICPCG Group, Stanford, CA, USA
- Department of Health Research and Policy, Stanford School of Medicine, Stanford, CA, USA
- Stanford Cancer Institute, Stanford School of Medicine, Stanford, CA, USA
| | - Ingrid Oakley-Girvan
- BC/CA/HI ICPCG Group, Stanford, CA, USA
- Department of Health Research and Policy, Stanford School of Medicine, Stanford, CA, USA
- Stanford Cancer Institute, Stanford School of Medicine, Stanford, CA, USA
- Cancer Prevention Institute of California
| | - Chih-Lin Hsieh
- BC/CA/HI ICPCG Group, Stanford, CA, USA
- Department of Urology and Department of Biochemistry and Molecular Biology, University of Southern California, Los Ageles, CA, USA
| | - Latchezar Dimitrov
- Data Coordinating Center for the ICPCG and Center for Human Genomics, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA
| | - Janet L Stanford
- FHCRC ICPCG Group, Seattle, WA, USA
- Fred Hutchinson Cancer Research Center, Division of Public Health Sciences, Seattle, WA, USA
| | - Danielle M Karyadi
- FHCRC ICPCG Group, Seattle, WA, USA
- Cancer Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Kerry Deutsch
- FHCRC ICPCG Group, Seattle, WA, USA
- Institute for Systems Biology, Seattle, WA, USA
| | - Laura McIntosh
- FHCRC ICPCG Group, Seattle, WA, USA
- Fred Hutchinson Cancer Research Center, Division of Public Health Sciences, Seattle, WA, USA
| | - Elaine A Ostrander
- FHCRC ICPCG Group, Seattle, WA, USA
- Cancer Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Kathleen E Wiley
- Johns Hopkins University ICPCG Group and Department of Urology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Sarah D Isaacs
- Johns Hopkins University ICPCG Group and Department of Urology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Patrick C Walsh
- Johns Hopkins University ICPCG Group and Department of Urology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | | | | | | | - Ethan M Lange
- University of Michigan ICPCG Group, Ann Arbor, MI, USA
- Department of Genetics, University of North Carolina, Chapel Hill, NC, USA
| | - Kathleen A Cooney
- University of Michigan ICPCG Group, Ann Arbor, MI, USA
- University of Michigan, Ann Arbor, MI, USA
| | - Teuvo LJ Tammela
- University of Tampere ICPCG Group, Tampere, Finland
- Institute of Biomedical Technology, University of Tampere, Tampere, Finland
- Centre for Laboratory Medicine and Department of Urology, Tampere University Hospital, Tampere, Finland
| | - Johanna Schleutker
- University of Tampere ICPCG Group, Tampere, Finland
- Institute of Biomedical Technology, University of Tampere, Tampere, Finland
- Centre for Laboratory Medicine and Department of Urology, Tampere University Hospital, Tampere, Finland
| | - Christiane Maier
- University of Ulm ICPCG Group, Ulm, Germany
- Dept of Urology, University of Ulm, Ulm, Germany
- Institute of Human Genetics, University of Ulm, Ulm, Germany
| | - Sylvia Bochum
- University of Ulm ICPCG Group, Ulm, Germany
- Institute of Human Genetics, University of Ulm, Ulm, Germany
| | - Josef Hoegel
- University of Ulm ICPCG Group, Ulm, Germany
- Institute of Human Genetics, University of Ulm, Ulm, Germany
| | - Henrik Grönberg
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Fredrik Wiklund
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | | | | | | | - Olivier Cussenot
- CeRePP ICPCG Group, 75020, Paris, France
- Hopital Tenon, Assistance Publique-Hopitaux de Paris, 75020, Paris, France
| | - William B Isaacs
- Johns Hopkins University ICPCG Group and Department of Urology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
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Abstract
One hundred years ago, decades before the discovery of the structure of DNA, debate raged regarding how human traits were passed from one generation to the next. Phenotypes, including risk of disease, had long been recognized as having a familial component. Yet it was difficult to reconcile genetic segregation as described by Mendel with observations exhaustively documented by Karl Pearson and others regarding the normal distribution of human characteristics. In 1918, R. A. Fisher published his landmark article, "The Correlation Between Relatives on the Supposition of Mendelian Inheritance," bridging this divide and demonstrating that multiple alleles, all individually obeying Mendel's laws, account for the phenotypic variation observed in nature.Since that time, geneticists have sought to identify the link between genotype and phenotype. Trait-associated alleles vary in their frequency and degree of penetrance. Some minor alleles may approach a frequency of 50% in the human population, whereas others are present within only a few individuals. The spectrum for penetrance is similarly wide. These characteristics jointly determine the segregation pattern of a given trait, which, in turn, determine the method used to map the trait. Until recently, identification of rare, highly penetrant alleles was most practical. Revolutionary studies in genomics reported over the past decade have made interrogation of most of the spectrum of genetic variation feasible.The following article reviews recent discoveries in the genetic basis of inherited cancer risk and how these discoveries inform cancer biology and patient management. Although this article focuses on prostate cancer, the principles are generic for any cancer and, indeed, for any trait.
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Abstract
Background: Previously, using gene-knockdown techniques together with genome expression array analysis, we showed the gene protein Kinase C (PKC)-zeta (PRKCZ) to mediate the malignant phenotype of human prostate cancer. However, according to NCBI, the gene has undergone several major iterations. Therefore, to understand the relationship between its structure and biological activities, we have analysed its expressed sequence in prostate cancer cell lines and tissues. Methods: Transcriptome-walking and targeted PCR were used to sequence the mRNA transcribed from PRKCZ. Hydropathy analysis was employed to analyse the hypothetical protein sequence subsequently translated and to identify an appropriate epitope to generate a specific monoclonal antibody. Results: A novel sequence was identified within the 3′-terminal domain of human PRKCZ that, in prostate cancer cell lines and tissues, is expressed during transcription and thereafter translated into protein (designated PKC-ζ-PrC) independent of conventional PKC-ζ-a. The monoclonal antibody detected expression of this 96 kD protein only within malignant prostatic epithelium. Interpretation: Transcription and translation of this gene sequence, including previous intronic sequences, generates a novel specific biomarker of human prostate cancer. The presence of catalytic domains characteristic of classic PKC-β and atypical PKC-ι within PKC-ζ-PrC provides a potential mechanism for this PRKCZ variant to modulate the malignant prostatic phenotype out-with normal cell-regulatory control.
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Abstract
For decades, physicians and researchers have recognized that family history is a significant risk factor for prostate cancer. The identification of the genes responsible for inherited risk, however, proved difficult. With the sequencing of the human genome and the completion of the initial phases of the International HapMap Project, the tools are available to scan the entire genome and find genetic markers for disease. Since 2006, more than 30 inherited variants strongly associated with prostate cancer have been reported. As the inherited component of the disease is revealed, efforts are ongoing to translate genetic findings into the clinic.
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Affiliation(s)
- Mark M Pomerantz
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
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Lee SH, Park KK, Chung MS, Chung BH. Clinical features of familial or hereditary prostate cancer in korean men: a pilot study. Korean J Urol 2011; 52:9-12. [PMID: 21344024 PMCID: PMC3037512 DOI: 10.4111/kju.2011.52.1.9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Accepted: 11/24/2010] [Indexed: 12/04/2022] Open
Abstract
Purpose There are few data regarding the epidemiology of hereditary or familial prostate cancer (PCa) in East Asians, especially in Korean men. Therefore, we evaluated the incidence of familial and hereditary PCa and the relation between socioeconomic status and the incidence of nonsporadic prostate cancer (NSPC). Materials and Methods We collected data from all patients who were treated for PCa at our center between November 2009 and January 2010. All patients were either newly diagnosed or had been diagnosed with PCa and seen as outpatients during the study period. Results In a sample of 218 patients with PCa; 25 (11.5%) were NSPC patients, and 193 (88.6%) were sporadic PCa sporadic prostate cancer (SPC) patients. Overall, 11.5% of the patients had a positive family history. There was one hereditary PCa family (three patients, 1.4%) and 11 familial PCa families (22 patients, 10.1%). Patients were divided into three different age groups. Of these, 18 (9.3%) SPC patients and 6 (24%) NSPC patients were diagnosed with the disease at the age of 55 years or younger (p=0.02). Prostate-specific antigen (PSA) levels in the NSPC group were significantly higher than in the SPC group (7.2±3.2 versus 6.3±4.9 ng/ml, p=0.042). SPC patients had larger waist circumferences than did NSPC patients (p=0.041). There were no significant differences between the SPC and NSPC groups in terms of socioeconomic status, Gleason score, pathological stage, or pathologic Gleason grade. Conclusions East Asian NSPC patients are diagnosed at earlier ages than are SPC patients, even though the incidence of NSPC in the East Asian population is lower than in Western men.
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Affiliation(s)
- Seung Hwan Lee
- Department of Urology, Gangnam Severance Hospital, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
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25
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Koochekpour S. Androgen receptor signaling and mutations in prostate cancer. Asian J Androl 2010; 12:639-57. [PMID: 20711217 PMCID: PMC3006239 DOI: 10.1038/aja.2010.89] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Revised: 07/02/2010] [Accepted: 07/14/2010] [Indexed: 12/19/2022] Open
Abstract
Normal and neoplastic growth of the prostate gland are dependent on androgen receptor (AR) expression and function. Androgenic activation of the AR, in association with its coregulatory factors, is the classical pathway that leads to transcriptional activity of AR target genes. Alternatively, cytoplasmic signaling crosstalk of AR by growth factors, neurotrophic peptides, cytokines or nonandrogenic hormones may have important roles in prostate carcinogenesis and in metastatic or androgen-independent (AI) progression of the disease. In addition, cross-modulation by various nuclear transcription factors acting through basal transcriptional machinery could positively or negatively affect the AR or AR target genes expression and activity. Androgen ablation leads to an initial favorable response in a significant number of patients; however, almost invariably patients relapse with an aggressive form of the disease known as castration-resistant or hormone-refractory prostate cancer (PCa). Understanding critical molecular events that lead PCa cells to resist androgen-deprivation therapy is essential in developing successful treatments for hormone-refractory disease. In a significant number of hormone-refractory patients, the AR is overexpressed, mutated or genomically amplified. These genetic alterations maintain an active presence for a highly sensitive AR, which is responsive to androgens, antiandrogens or nonandrogenic hormones and collectively confer a selective growth advantage to PCa cells. This review provides a brief synopsis of the AR structure, AR coregulators, posttranslational modifications of AR, duality of AR function in prostate epithelial and stromal cells, AR-dependent signaling, genetic changes in the form of somatic and germline mutations and their known functional significance in PCa cells and tissues.
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Affiliation(s)
- Shahriar Koochekpour
- Department of Urology and Stanley S. Scott Cancer Center, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA.
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Abstract
The migration and invasion inhibitor protein (MIIP, also known as IIp45) was discovered as a negative regulator of cell migration and invasion in glioma. Our previous studies have shown that the MIIP protein was reduced or undetectable in some tissue samples obtained from patients with glioblastoma. The significance of MIIP in gliomagenesis is unknown. In this study, we report that MIIP has an important role in the inhibition of gliomagenesis and attenuation of mitotic transition. Increased MIIP expression levels inhibited colony formation and cell growth of glioma cell lines in vitro, whereas decreased expression by specific small interfering RNA for MIIP resulted in increased cell growth. Expression of MIIP in a glial-specific mouse model blocked glioma development and progression, thus showing that MIIP is an inhibitor of gliomagenesis. Furthermore, we show that MIIP attenuates mitotic transition and results in increased mitotic catastrophe. The biochemical mechanism of MIIP in this process is associated with its regulation of anaphase-promoting complex (APC/C) activity. MIIP interacts directly with Cdc20, and the interaction of MIIP with Cdc20 inhibits APC/C-mediated degradation of cyclin B1. Thus, MIIP attenuates mitotic transition and increases mitotic catastrophe, thereby inhibiting glioma development and progression.
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Fitzgerald LM, McDonnell SK, Carlson EE, Langeberg W, McIntosh LM, Deutsch K, Ostrander EA, Schaid DJ, Stanford JL. Genome-wide linkage analyses of hereditary prostate cancer families with colon cancer provide further evidence for a susceptibility locus on 15q11-q14. Eur J Hum Genet 2010; 18:1141-7. [PMID: 20407467 DOI: 10.1038/ejhg.2010.49] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The search for susceptibility loci in hereditary prostate cancer (HPC) is challenging because of locus and disease heterogeneity. One approach to reduce disease heterogeneity is to stratify families on the basis of the occurrence of multiple cancer types. This method may increase the power for detecting susceptibility loci, including those with pleiotropic effects. We have completed a genome-wide SNP linkage analysis of 96 HPC families, each of which has one or more first-degree relatives with colon cancer (CCa), and further analyzed the subset of families with two or more CCa cases (n = 27). When only a prostate cancer (PCa) phenotype was considered to be affected, we observed suggestive evidence for linkage (LOD ≥1.86) at 15q14, 18q21 and 19q13 in all families, and at 1p32 and 15q11-q14 in families with two or more CCa cases. When both the PCa and CCa phenotypes were considered affected, suggestive evidence for linkage was observed at 11q25, 15q14 and 18q21 in all families, and at 1q31, 11q14 and 15q11-14 in families with two or more CCa cases. The strongest linkage signal was identified at 15q14 when both PCa and CCa phenotypes were considered to be affected in families with two or more CCa cases (recessive HLOD = 3.88). These results provide further support for the presence of HPC susceptibility loci on chromosomes 11q14, 15q11-q14 and 19q13 and highlight loci at 1q31, 11q, 15q11-14 and 18q21 as having possible pleiotropic effects. This study shows the benefit of using a comprehensive family cancer history to create more genetically homogenous subsets of HPC families for linkage analyses.
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Affiliation(s)
- Liesel M Fitzgerald
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109-1024, USA
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VanCleave TT, Moore JH, Benford ML, Brock GN, Kalbfleisch T, Baumgartner RN, Lillard JW, Kittles RA, Kidd LCR. Interaction among variant vascular endothelial growth factor (VEGF) and its receptor in relation to prostate cancer risk. Prostate 2010; 70:341-52. [PMID: 19908237 PMCID: PMC4433472 DOI: 10.1002/pros.21067] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Prostate cancer (PCa) incidence and mortality are disproportionately high among African-American (AA) men. Its detection and perhaps its disparities could be improved through the identification of genetic susceptibility biomarkers within essential biological pathways. Interactions among highly variant genes, central to angiogenesis, may modulate susceptibility for prostate cancer, as previous demonstrated. This study evaluates the interplay among three highly variant genes (i.e., IL-10, TGFbetaR-1, VEGF), their receptors and their influence on PCa within a case-control study consisting of an under-served population. METHODS This study evaluated single gene and joint modifying effects on PCa risk in a case-control study comprised of 859 AA men (193 cases and 666 controls) using TaqMan qPCR. Interaction among polymorphic IL-10, TGFbetaR-1 and VEGF was analyzed using conventional logistic regression analysis (LR) models, multi-dimensionality reduction (MDR) and interaction entropy graphs. Symbolic modeling allowed validation of gene-gene interaction findings identified by MDR. RESULTS No significant single gene effects were demonstrated in relation to PCa risk. However, carriers of the VEGF 2482T allele had a threefold increase in the risk of developing aggressive PCa. The presence of VEGF 2482T combined with VEGFR IVS6 + 54 loci were highly significant for the risk of PCa based on MDR and symbolic modeling analyses. These findings were substantiated by 1,000-fold cross validation permutation testing (P = 0.04), respectively. CONCLUSION These findings suggest the inheritance of VEGF and VEGFR IVS6 + 54 sequence variants may jointly modify PCa susceptibility through their influence on angiogenesis. Larger sub-population studies are needed to validate these findings and evaluate whether the VEGF-VEGR axis may serve as predictors of disease prognosis and ultimately clinical response to available treatment strategies.
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Affiliation(s)
- Tiva T. VanCleave
- Department of Pharmacology & Toxicology, University of Louisville (UofL), Louisville, Kentucky
- Cancer Prevention & Control Program, James Graham Brown Cancer Center, University of Louisville (UofL), Louisville, Kentucky
| | - Jason H. Moore
- Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire
| | - Marnita L. Benford
- Department of Pharmacology & Toxicology, University of Louisville (UofL), Louisville, Kentucky
- Cancer Prevention & Control Program, James Graham Brown Cancer Center, University of Louisville (UofL), Louisville, Kentucky
| | - Guy N. Brock
- Department of Bioinformatics & Biostatistics, School of Public Health and Information Science (SPHIS), University of Louisville (UofL), Louisville, Kentucky
| | - Ted Kalbfleisch
- Department of Biochemistry and Molecular Biology, University of Louisville (UofL), Louisville, Kentucky
| | - Richard N. Baumgartner
- Department of Epidemiology, SPHIS, University of Louisville (UofL), Louisville, Kentucky
| | - James W. Lillard
- Department of Pharmacology & Toxicology, University of Louisville (UofL), Louisville, Kentucky
- Department of Microbiology and Immunology, University of Louisville (UofL), Louisville, Kentucky
| | - Rick A. Kittles
- Department of Medicine, Section of Genetic Medicine, University of Chicago, Chicago, Illinois
| | - La Creis R. Kidd
- Department of Pharmacology & Toxicology, University of Louisville (UofL), Louisville, Kentucky
- Cancer Prevention & Control Program, James Graham Brown Cancer Center, University of Louisville (UofL), Louisville, Kentucky
- Department of Epidemiology, SPHIS, University of Louisville (UofL), Louisville, Kentucky
- Correspondence to: La Creis R. Kidd, PhD, MPH, 580 South Preston Street, 304A Delia Baxter II Research Building, Louisville, KY 40202.
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Hu SY, Liu T, Liu ZZ, Ledet E, Velasco-Gonzalez C, Mandal DM, Koochekpour S. Identification of a novel germline missense mutation of the androgen receptor in African American men with familial prostate cancer. Asian J Androl 2010; 12:336-43. [PMID: 20173765 DOI: 10.1038/aja.2010.5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Race, family history and age are the unequivocally accepted risk factors for prostate cancer (PCa). Androgen receptor (AR)-dependent signaling is an important element in prostate carcinogenesis and its progression to metastatic disease. We examined the possibility of genomic changes in the AR in association with familial PCa in African Americans who have a higher incidence and mortality rate and a clinically more aggressive disease presentation than Caucasians. Genomic DNAs of 60 patients from 30 high-risk African American and Caucasian families participating in the Louisiana State University Health Sciences Center genetic linkage study of PCa were studied. Exon-specific polymerase-chain reaction, bi-directional automated sequencing and restriction enzyme genotyping were used to analyze for mutations in the coding region of the AR gene. We identified a germline AR (A1675T) (T559S) substitution mutation in the DNA-binding domain in three PCa-affected members of an African-American family with a history of early-onset disease. The present study describes the first AR germline mutation in an African-American family with a history of familial PCa. The AR (T559S) mutation may contribute to the disease by altering AR DNA-binding affinity and/or its response to androgens, non-androgenic steroids or anti-androgens. Additional studies will be required to define the frequency and contribution of the AR (A1675T) allele to early-onset and/or familial PCa in African Americans.
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Affiliation(s)
- Si-Yi Hu
- Stanley S Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
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30
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Muslumanoglu MH, Tepeli E, Demir S, Uludag A, Uzun D, Atli E, Canturk KM, Ozdemir M, Turgut M. The analysis of the relationship between A1298C and C677T polymorphisms of the MTHFR gene with prostate cancer in Eskisehir population. Genet Test Mol Biomarkers 2010; 13:641-5. [PMID: 19814618 DOI: 10.1089/gtmb.2009.0046] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Prostate cancer is the most common cause of cancer deaths in men and is a major health problem worldwide. Methylene tetrahydrofolate reductase (MTHFR) plays an important role for folate metabolism and is also an important source for DNA methylation and DNA synthesis (nucleotide synthesis). The objective of this study was to investigate the relationship between the A1298C and C677T polymorphisms of the MTHFR gene and prostate cancer in the Turkish population. In our study, 93 prostate cancer patients between the ages of 50-89 and a control group of 166 benign prostate hyperplasia patients were evaluated. C677T and A1298C polymorphism ratios were compared among these two groups, and an analysis was made to see if there is a statistically meaningful difference. In this study, it has been observed that C677T polymorphism of the MTHFR gene produces no statistically significant difference for T allele frequency and the genotype frequency in prostate cancer patients and male controls with benign prostate hyperplasia not having prostate cancer, whereas it has been observed that A1298C polymorphism produces a statistically significant difference for C allele frequency in prostate cancer patients and controls and that it also produces a statistically marginal significance for genotype frequencies.
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Affiliation(s)
- Muhammed H Muslumanoglu
- Department of Medical Genetics, Eskisehir Osmangazi University School of Medicine, Eskisehir, Turkey.
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31
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Affiliation(s)
- Cheol-Yong Yoon
- Department of Urology, Seoul National University College of Medicine, Korea. ,
| | - Seok-Soo Byun
- Department of Urology, Seoul National University College of Medicine, Korea. ,
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32
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Genomic profiling of prostate cancers from African American men. Neoplasia 2009; 11:305-12. [PMID: 19242612 DOI: 10.1593/neo.81530] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2008] [Revised: 01/11/2009] [Accepted: 01/12/2009] [Indexed: 11/18/2022] Open
Abstract
African American (AA) men have a higher incidence and significantly higher mortality rates from prostate cancer than white men, but the biological basis for these differences are poorly understood. Few studies have been carried out to determine whether there are areas of allelic loss or gain in prostate cancers from AA men that are overrepresented in or specific to this group. To better understand the molecular mechanisms of prostate cancer in AA men, we have analyzed 20 prostate cancers from AA men with high-density single-nucleotide polymorphism arrays to detect genomic copy number alterations. We identified 17 regions showing significant loss and 4 regions with significant gains. Most of these regions had been linked to prostate cancer by previous studies of copy number alterations of predominantly white patients.We identified a novel region of loss at 4p16.3, which has been shown to be lost in breast, colon, and bladder cancers. Comparison of our primary tumors with tumors from white patients from a previously published cohort with similar pathological characteristics showed higher frequency of loss of at numerous loci including 6q13-22, 8p21, 13q13-14, and 16q11-24 and gains of 7p21 and 8q24, all of which had higher frequencies in metastatic lesions in this previously published cohort. Thus, the clinically localized cancers from AA men more closely resembled metastatic cancers from white men. This difference may in part explain the more aggressive clinical behavior of prostate cancer in AA men.
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Hatcher D, Daniels G, Osman I, Lee P. Molecular mechanisms involving prostate cancer racial disparity. Am J Transl Res 2009; 1:235-248. [PMID: 19956434 PMCID: PMC2776319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2009] [Accepted: 04/17/2009] [Indexed: 05/28/2023]
Abstract
African American (AA) men with prostate cancer (PCa) have worse disease, with a higher incidence, younger age and more advanced disease at diagnosis, and a worse prognosis, compared to Caucasian (CA) men. In addition to socioeconomic factors and lifestyle differences, molecular alterations contribute to this discrepancy. In this review, we summarize molecular genetics research results interrelated with the biology of PCa racial disparity. Androgen and androgen receptor (AR) pathways have long been associated with prostate growth. Racial differences have also been found among variants of the genes of the enzymes involved in androgen biosynthesis and metabolism, such as SRD5A2, CYP17, and CYP3A4. The levels of expression and CAG repeat length of AR also show racial divergence and may be critical molecular alterations for racial disparity. Growth factors and their receptors, which promote cancer cell growth, are another potential cause of the disparity; both EGFR and EPHB2, two of the most studied receptors, show interethnic differences. Differences have also been found among genes regulating cell apoptosis, such as BCL2, which is increased in PCa in the AA population. Recent developments in genetics, proteomics, and genomics, among other molecular biotechnologies, will greatly aid the advancement of translational research on PCa racial disparity, hopefully culminating in the discovery of novel mechanisms of disease, in addition to prognostic markers and novel therapeutic approaches.
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Affiliation(s)
- David Hatcher
- Department of Pathology and Urology, New York University School of Medicine New York, NY
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34
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Lippi G, Montagnana M, Guidi GC, Plebani M. Prostate-specific antigen-based screening for prostate cancer in the third millennium: useful or hype? Ann Med 2009; 41:480-9. [PMID: 19657768 DOI: 10.1080/07853890903156468] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Prostate cancer is the most prevalent malignancy in men and the third leading cause of cancer deaths worldwide. Although the wide-spread introduction of total prostate-specific antigen (tPSA) testing has revolutionized the approach to the managed care of this disease, there are some biological, analytical, clinical, and economical issues that argue against the cost-effectiveness of tPSA-based population screening for early identification of cancer. The on-going standardization/harmonization efforts, along with the outcomes of recent epidemiological investigations, demonstrate that the current tPSA thresholds might be revised and possibly recalculated according to several demographical variables, such as age, ethnicity, genotype, family history, and body mass index. A major shortcoming of tPSA screening is the lack of reliable evidences of reduction in prostate cancer-associated mortality, due to the large lead-time because of the indolent growth rate, the impossibility to differentiate high-grade from indolent cancers, and the treatment-associated morbidity. Since no single tPSA cut-off was proven able to efficiently identify men at higher risk of death, the jeopardy of over-diagnosis and over-treatment is also tangible. The large expenditure is an additional source of concern. Finally, a wide-spread population screening also carries several ethical, social, and psychological implications, which might overwhelm the potential benefits.
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Affiliation(s)
- Giuseppe Lippi
- Section of Clinical Chemistry, University-Hospital of Verona, Verona, Italy.
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35
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Rajekar H, Wai CT, Majeed TA, Lee KH, Wong SY, Leong SO, Singh R, Tay KH, Soosaynathan C, Tan KC. Prognostic factors in patients with acute liver failure undergoing live donor liver transplantation. Transplant Proc 2008; 410:1-8. [PMID: 18929776 DOI: 10.1016/j.gene.2007.11.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2007] [Revised: 11/27/2007] [Accepted: 11/29/2007] [Indexed: 01/24/2023]
Abstract
Mortality from acute liver failure (ALF) is high. Live donor liver transplantation (LDLT) is the treatment of choice for ALF in Asia, because cadaveric donors are rare. We sought to review our results in ALF patients with undergoing LDLT at our center. One hundred two LDLTs were performed at our center from April 2002 to November 2007, 15 (14%) because of ALF. Mean (SEM; median, range) follow-up was 1,065 (189; 1400; 3-2046) days. Nine patients (60%) had acute exacerbation of chronic hepatitis B; and 6 (40%) had drug-induced liver injury. Age was 47 (3; 50; 27-65) years. Ten patients (67%) were men. At transplantation, laboratory values were included bilirubin, 449 (35) micromol/L; creatinine concentration, 182 (32) mmol/L. The international normalized ratio was 2.4 (0.2). The Model for End-Stage Liver Disease (MELD) score was 34 (2). Both inpatient and long-term mortality was 20% 3 of 15 patients died. The 5-year survival was 80%. Compared with survivors, patients who died had a significantly higher creatinine concentration 289 vs 155 micromol/L, international normalized ratio (3.4 vs 2.1), MELD score (47 vs 32). We conclude that despite being sick with median and mean MELD scores of 32 and 34, 80% of patients with ALF can achieve good long-term survival after LDLT.
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Affiliation(s)
- H Rajekar
- Asian Center for Liver Diseases and Transplantation, Singapore
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36
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Lefeuvre M, Gunduz M, Nagatsuka H, Gunduz E, Al Sheikh Ali M, Beder L, Fukushima K, Yamanaka N, Shimizu K, Nagai N. Fine deletion analysis of 1p36 chromosomal region in oral squamous cell carcinomas. J Oral Pathol Med 2008; 38:94-8. [DOI: 10.1111/j.1600-0714.2008.00666.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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37
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Metabolic syndrome in sub-Saharan Africa: "smaller twin" of a region's prostatic diseases? Int Urol Nephrol 2008; 40:909-20. [PMID: 18288584 DOI: 10.1007/s11255-008-9343-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Accepted: 01/22/2008] [Indexed: 01/12/2023]
Abstract
Prostate cancer (PC) and benign prostate hyperplasia (BPH) constitute many of the health concerns of males around the world. Prostate cancer is the major cause of death after lung cancer in men. Benign prostate hyperplasia affects most males above 40 years of age. A variety of factors, chiefly age, genetics and lifestyle, have been linked to the development of PC and BPH. The metabolic syndrome describes a chain of chronic disorders that are inter-related in aetiology, and result from unhealthy lifestyles, often due to an affluent economy. The eating of processed foods and a sedentary lifestyle apparently are status symbols among the middle and upper classes in sub-Saharan Africa. These have resulted in a surge in the disease burden of sub-Saharan Africa. This paper looks at the aetiology and prevalence of the metabolic syndrome and prostatic diseases, especially in sub-Saharan Africa. Evidence from the available literature shows that prostate disorders may be related to the metabolic syndrome. There is a likelihood that if sub-Saharan Africans keep copying the lifestyles of the developed world, especially in the direction of the nature of food items consumed, then the rising prevalence of diseases of the metabolic syndrome and the attendant prostate disorders may become very formidable healthcare "twin" problems for the region.
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38
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Hahn NM, Kelley MR, Klaunig JE, Koch MO, Li L, Sweeney CJ. Constitutional polymorphisms of prostate cancer: prognostic and diagnostic implications. Future Oncol 2008; 3:665-82. [PMID: 18041919 DOI: 10.2217/14796694.3.6.665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Prostate cancer is the most common cancer diagnosis in men. While often perceived as a slow, indolent malignancy, prostate cancer trails only lung cancer among cancer-related mortality in men. Current diagnosis and treatment algorithms are plagued by overdiagnosis of non-lethal indolent prostate cancer with no proven means to predict, detect, and prevent aggressive lethal prostate cancer in men most at risk. These challenges are particularly concerning for African-American men who demonstrate increased rates of prostate cancer incidence and mortality when compared to other ethnic groups. With the completion of the human genome project, technology and techniques now exist to differentiate cancer from normal tissues based on the expression patterns of thousands of genes assessed simultaneously on a single microarray gene 'chip'. This platform has greatly improved our understanding of genes that regulate tumor behavior once cancer is established. Microarrays can also be utilized in patients without cancer to determine which patients are at high risk for tumor development and in need of rational prevention strategies. Constitutional single nucleotide polymorphisms (SNPs) are one source of genetic variation and may serve as a means to identify these high-risk individuals. SNPs are single nucleotide base pair changes within a gene which occur in one percent or more of the population. SNPs can contribute to a disease state by altering the function of a protein encoded by a gene without affecting gene expression. This review will examine the current understanding of constitutional SNPs associated with prostate cancer carcinogenesis, highlight two current diagnostic array platforms and discuss implications for future prevention and screening programs.
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Affiliation(s)
- Noah M Hahn
- Indiana University Melvin & Bren Simon Cancer Center, Indiana Cancer Pavilion Room RT415, 535 Barnhill Drive, Indianapolis, Indiana 46202, USA.
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Hood L. A personal journey of discovery: developing technology and changing biology. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2008; 1:1-43. [PMID: 20636073 DOI: 10.1146/annurev.anchem.1.031207.113113] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
This autobiographical article describes my experiences in developing chemically based, biological technologies for deciphering biological information: DNA, RNA, proteins, interactions, and networks. The instruments developed include protein and DNA sequencers and synthesizers, as well as ink-jet technology for synthesizing DNA chips. Diverse new strategies for doing biology also arose from novel applications of these instruments. The functioning of these instruments can be integrated to generate powerful new approaches to cloning and characterizing genes from a small amount of protein sequence or to using gene sequences to synthesize peptide fragments so as to characterize various properties of the proteins. I also discuss the five paradigm changes in which I have participated: the development and integration of biological instrumentation; the human genome project; cross-disciplinary biology; systems biology; and predictive, personalized, preventive, and participatory (P4) medicine. Finally, I discuss the origins, the philosophy, some accomplishments, and the future trajectories of the Institute for Systems Biology.
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Affiliation(s)
- Lee Hood
- Institute for Systems Biology, Seattle, Washington 98103, USA.
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40
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Shook SJ, Beuten J, Torkko KC, Johnson-Pais TL, Troyer DA, Thompson IM, Leach RJ. Association of RNASEL variants with prostate cancer risk in Hispanic Caucasians and African Americans. Clin Cancer Res 2007; 13:5959-64. [PMID: 17908993 DOI: 10.1158/1078-0432.ccr-07-0702] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE The RNASEL gene at 1q25 has been identified as a hereditary prostate cancer susceptibility gene, but to date, no study has investigated the role of RNASEL variants in Hispanic Caucasian men with prostate cancer. EXPERIMENTAL DESIGN Two RNASEL common variants, located at amino acids 462 and 541, were genotyped in non-Hispanic Caucasian, Hispanic Caucasian, and African American prostate cancer cases and controls. RESULTS The RNASEL 462 AA genotype was found to increase prostate cancer risk over 4-fold in Hispanic Caucasians [odds ratio (OR), 4.43; 95% confidence interval (95% CI), 1.68-11.68; P = 0.003] and over 10-fold in African Americans (OR, 10.41; 95% CI, 2.62-41.40; P = 0.001) when compared with the GG genotype. Analysis of the RNASEL 541 variant showed that Hispanic Caucasian patients with the GG genotype had a statistically significant increase in their risk for developing prostate cancer when compared with the TT and GT genotypes (OR, 1.91; 95% CI, 1.16-3.14; P = 0.01). A common G-T haplotype for the combination of the RNASEL 462 and 541 variants was found to occur more frequently in controls compared with cases in African Americans (P = 0.04) but not in non-Hispanic Caucasians or Hispanic Caucasians. CONCLUSIONS This is the first study that investigates the association of prostate cancer risk with RNASEL variants in Hispanic men. Our data support the role of RNASEL as a predisposition gene for prostate cancer and showed a significant association between the RNASEL 462 variant and prostate cancer risk in African Americans and Hispanic Caucasians.
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Affiliation(s)
- Stacie J Shook
- Department of Cellular and Structural Biology, The University of Texas Health Science Center, San Antonio, Texas 78229-3900, USA
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41
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Thomas A, Camp NJ, Farnham JM, Allen-Brady K, Cannon-Albright LA. Shared genomic segment analysis. Mapping disease predisposition genes in extended pedigrees using SNP genotype assays. Ann Hum Genet 2007; 72:279-87. [PMID: 18093282 DOI: 10.1111/j.1469-1809.2007.00406.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We examine the utility of high density genotype assays for predisposition gene localization using extended pedigrees. Results for the distribution of the number and length of genomic segments shared identical by descent among relatives previously derived in the context of genomic mismatch scanning are reviewed in the context of dense single nucleotide polymorphism maps. We use long runs of loci at which cases share a common allele identically by state to localize hypothesized predisposition genes. The distribution of such runs under the hypothesis of no genetic effect is evaluated by simulation. Methods are illustrated by analysis of an extended prostate cancer pedigree previously reported to show significant linkage to chromosome 1p23. Our analysis establishes that runs of simple single locus statistics can be powerful, tractable and robust for finding DNA shared between relatives, and that extended pedigrees offer powerful designs for gene detection based on these statistics.
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Affiliation(s)
- A Thomas
- Department of Biomedical Informatics, University of Utah, 391 Chipeta Way, Salt Lake City, UT 84108, USA.
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42
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Balachandar V, Lakshman Kumar B, Sasikala K, Manikantan P, Sangeetha R, Mohana Devi S. Identification of a high frequency of chromosomal rearrangements in the centromeric regions of prostate cancer patients. J Zhejiang Univ Sci B 2007; 8:638-46. [PMID: 17726745 PMCID: PMC1963430 DOI: 10.1631/jzus.2007.b0638] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The aim of the present investigation was to study the major chromosomal aberrations (CA) like deletion, translocation, inversion and mosaic in prostate cancer patients of Tamilnadu, Southern India. Totally 45 blood samples were collected from various hospitals in Tamilnadu, Southern India. Equal numbers of normal healthy subjects were chosen after signing a consent form. Volunteers provided blood samples (5 ml) to establish leukocyte cultures. Cytogenetic studies were performed by using Giemsa-banding technique and finally the results were ensured by spectral karyotyping (SKY) technique. In the present investigation, major CA like deletion, translocation, inversion and mosaic were identified in experimental subjects. Results showed frequent CA in chromosomes 1, 3, 5, 6, 7, 9, 13, 16, 18 and X. In comparison with experimental subjects, the control subjects exhibited very low levels of major CA (P<0.05). In the present study, the high frequency of centromeric rearrangements indicates a potential role for mitotic irregularities associated with the centromere in prostate cancer tumorigenesis. Identification of chromosome alterations may be helpful in understanding the molecular basis of the disease in better manner.
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Affiliation(s)
- V Balachandar
- Division of Human Genetics, Department of Zoology, Bharathiar University, Coimbatore-641046, Tamilnadu, India.
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Cunningham JM, Hebbring SJ, McDonnell SK, Cicek MS, Christensen GB, Wang L, Jacobsen SJ, Cerhan JR, Blute ML, Schaid DJ, Thibodeau SN. Evaluation of genetic variations in the androgen and estrogen metabolic pathways as risk factors for sporadic and familial prostate cancer. Cancer Epidemiol Biomarkers Prev 2007; 16:969-78. [PMID: 17507624 DOI: 10.1158/1055-9965.epi-06-0767] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Previous studies suggest that enzymes involved in the androgen metabolic pathway are susceptibility factors for prostate cancer. Estrogen metabolites functioning as genotoxins have also been proposed as risk factors. In this study, we systematically tested the hypothesis that common genetic variations for those enzymes involved in the androgen and estrogen metabolic pathways increase risk for sporadic and familial prostate cancer. From these two pathways, 46 polymorphisms (34 single nucleotide polymorphisms, 10 short tandem repeat polymorphisms, and 2 null alleles) in 25 genes were tested for possible associations. Those genes tested included PRL, LHB, CYP11A1, HSD3B1, HSD3B2, HSD17B2, CYP17, SRD5A2, AKR1C3, UGT2B15, AR, SHBG, and KLK3 from the androgen pathway and CYP19, HSD17B1, CYP1A1, CYP1A2, CYP1B1, COMT, GSTP1, GSTT1, GSTM1, NQO1, ESR1, and ESR2 from the estrogen pathway. A case-control study design was used with two sets of cases: familial cases with a strong prostate cancer family history (n = 438 from 178 families) and sporadic cases with a negative prostate cancer family history (n = 499). The controls (n = 493) were derived from a population-based collection. Our results provide suggestive findings for an association with either familial or sporadic prostate cancer with polymorphisms in four genes: AKR1C3, HSD17B1, NQO1, and GSTT1. Additional suggestive findings for an association with clinical variables (disease stage, grade, and/or node status) were observed for single nucleotide polymorphisms in eight genes: HSD3B2, SRD5A2, SHBG, ESR1, CYP1A1, CYP1B1, GSTT1, and NQO1. However, none of the findings were statistically significant after appropriate corrections for multiple comparisons. Given that the point estimates for the odds ratio for each of these polymorphisms are <2.0, much larger sample sizes will be required for confirmation.
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Affiliation(s)
- Julie M Cunningham
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA
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44
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Antón Aparicio LM, García Campelo R, Cassinello Espinosa J, Valladares Ayerbes M, Reboredo López M, Díaz Prado S, Aparicio Gallego G. Prostate cancer and Hedgehog signalling pathway. Clin Transl Oncol 2007; 9:420-8. [PMID: 17652055 DOI: 10.1007/s12094-007-0080-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The Hedgehog (Hh) family of intercellular signalling proteins have come to be recognised as key mediators in many fundamental processes in embryonic development. Their activities are central to the growth, patterning and morphogenesis of many different regions within the bodies of vertebrates. In some contexts, Hh signals act as morphogens in the dose-dependent induction of distinct cell fates within a target field, in others as mitogens in the regulation of cell proliferation or as inducing factors controlling the form of a developing organ. These diverse functions of Hh proteins raise many intriguing questions about their mode of action. Various studies have now demonstrated the function of Hh signalling in the control of cell proliferation, especially for stem cells and stem-like progenitors. Abnormal activation of the Hh pathway has been demonstrated in a variety of human tumours. Hh pathway activity in these tumours is required for cancer cell proliferation and tumour growth. Recent studies have uncovered the role for Hh signalling in advanced prostate cancer and demonstrated that autocrine signalling by tumour cells is required for proliferation, viability and invasive behaviour. Thus, Hh signalling represents a novel pathway in prostate cancer that offers opportunities for prognostic biomarker development, drug targeting and therapeutic response monitoring.
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Affiliation(s)
- L M Antón Aparicio
- Medical Oncology Service, C.H.U. Juan Canalejo, Department of Medicine, University of La Coruña, A Coruña, Spain.
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45
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D'Amico F, Biancolella M, Margiotti K, Reichardt JK, Novelli G. Genomic biomarkers, androgen pathway and prostate cancer. Pharmacogenomics 2007; 8:645-61. [PMID: 17559353 DOI: 10.2217/14622416.8.6.645] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Prostate cancer is the most frequent male malignancy diagnosed in western countries and the second leading cause of cancer-related deaths. The growth and function of the prostate gland depends on androgens. Owing to the importance of androgens in prostate development, genes involved in androgen biosynthesis and metabolism have been extensively studied. In this review, we address recent progress toward the use of inherited and acquired genetic variants to predict susceptibility and clinical outcomes of prostate cancer patients. Many of these genetic variants involve several genes related to the biosynthesis and metabolism of androgens, such as steroid-5-α-reductase, α polypeptide 2 (SRD5A2), cytochrome P450 (CYP)19A1, CYP17A1, hydroxy-δ-5-steroid dehydrogenase, 3 β- and steroid δ-isomerase 2 (HSD3B2) and androgen receptor (AR). With increasing knowledge, it may be possible to distinguish indolent from aggressive prostate tumors by molecular fingerprinting. Furthermore, with the emergence of new investigative tools, such as microarray platforms and comparative genomic hybridization (CGH) array, a variety of new genomic biomarkers will be available in the future to provide accurate prognostic and monitoring solutions for individualized patient care.
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Affiliation(s)
- Franca D'Amico
- Dipartimento di Biopatologia e Diagnostica per Immagini, Università di Roma Tor Vergata, 00133 Roma, Italy
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46
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Johanneson B, Deutsch K, McIntosh L, Friedrichsen-Karyadi DM, Janer M, Kwon EM, Iwasaki L, Hood L, Ostrander EA, Stanford JL. Suggestive genetic linkage to chromosome 11p11.2-q12.2 in hereditary prostate cancer families with primary kidney cancer. Prostate 2007; 67:732-42. [PMID: 17372923 DOI: 10.1002/pros.20528] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND The Seattle-based PROGRESS study was started in 1995 to ascertain hereditary prostate cancer (HPC) families for studies of genetic susceptibility. Subsequent studies by several research groups, including our own, suggest that HPC is a genetically heterogeneous disease. To be successful in mapping loci for such a complex disease, one must consider ways of grouping families into subsets that likely share the same genetic origin. Towards that end, we analyzed a genome-wide scan of HPC families with primary kidney cancer. METHODS An 8.1 cM genome-wide scan including 441 microsatellite markers was analyzed by both parametric and non-parametric linkage approaches in fifteen HPC families with the co-occurrence of kidney cancer. RESULTS There was no evidence for significant linkage in the initial findings. However, two regions of suggestive linkage were observed at 11q12 and 4q21, with HLOD scores of 2.59 and 2.10, respectively. The primary result on chromosome 11 was strengthened after excluding two families with members who had rare transitional cell carcinoma (TCC). Specifically, we observed a non-parametric Kong and Cox P-value of 0.004 for marker D11S1290 at 11p11.2. The 8 cM region between 11p11.2 and 11q12.2 was refined by the addition of 16 new markers. The subset of HPC families with a median age of diagnosis >65 years demonstrated the strongest evidence for linkage, with an HLOD = 2.50. The P-values associated with non-parametric analysis ranged from 0.004 to 0.05 across five contiguous markers. CONCLUSIONS Analysis of HPC families with members diagnosed with primary renal cell carcinoma demonstrates suggestive linkage to chromosome 11p11.2-q12.2.
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Affiliation(s)
- Bo Johanneson
- Cancer Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland, USA
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47
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Wang L, McDonnell SK, Slusser JP, Hebbring SJ, Cunningham JM, Jacobsen SJ, Cerhan JR, Blute ML, Schaid DJ, Thibodeau SN. Two common chromosome 8q24 variants are associated with increased risk for prostate cancer. Cancer Res 2007; 67:2944-50. [PMID: 17409399 DOI: 10.1158/0008-5472.can-06-3186] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Two variants (rs1447295/DG8S737) of chromosome 8q24 were recently reported to be associated with increased risk of prostate cancer (PC). To confirm this finding, we genotyped and compared the frequencies of these polymorphisms among 1,121 Caucasian men with PC (435 men with familial PC, 491 men with sporadic PC, and 195 men with aggressive PC) to 545 population-based controls. For the single nucleotide polymorphism marker rs1447295, frequencies of the minor allele (A) were 10.3% in controls, 11.9% in sporadic cases, 16.7% in familial cases, and 17.2% in aggressive cases. Compared with controls, the A allele was significantly more common in both familial PC [odds ratios (OR), 1.93; 95% confidence intervals (95% CI), 1.37-2.72; P = 0.0004] and aggressive PC (OR, 1.87; 95% CI, 1.28-2.74; P = 0.0005) but not for sporadic PC (OR, 1.16; 95% CI, 0.85-1.58; P = 0.25). Although the A allele was more frequent in aggressive PC cases when compared with controls, the allele frequencies were similar among cases with high- and low-grade PC (Gleason grades <7 and >/=7, respectively). For the microsatellite marker DG8S737, the -8 allele was significantly more frequent in familial PC (OR, 1.68; 95% CI, 1.09-2.60; P = 0.031), whereas the -10 allele was more frequent in aggressive PC (OR, 2.85; 95% CI, 1.52-5.36; P = 0.0004). Haplotype analysis showed significant differences in haplotype frequencies between the familial PC (P = 0.006) and aggressive PC (P = 0.005) cases versus controls. The -8/A haplotype showed the strongest association with familial PC (P = 0.008), whereas the -10/A haplotype was most strongly associated with aggressive PC (P = 0.00005). These results further confirm the importance of these two polymorphic variants (rs1447295 and DG8S737) as risk factors for PC. However, the mechanism explaining this increased risk has not yet been established.
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Affiliation(s)
- Liang Wang
- Departments of Laboratory Medicine and Pathology, Health Sciences Research, and Urology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
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Hasegawa Y, Matsubara A, Teishima J, Seki M, Mita K, Usui T, Oue N, Yasui W. DNA methylation of the RIZ1 gene is associated with nuclear accumulation of p53 in prostate cancer. Cancer Sci 2007; 98:32-6. [PMID: 17052263 DOI: 10.1111/j.1349-7006.2006.00338.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The retinoblastoma protein-interacting zinc finger gene, RIZ1, is thought to be a tumor suppressor gene. RIZ1 is inactivated by mutation, deletion and DNA methylation in several human cancers. In the present study, the relationship between DNA methylation of RIZ1 and mutation of p53 was investigated in prostate cancer (PCa). In total, 47 cases of node-negative PCa (stages I-III) were analyzed. DNA methylation of the RIZ1 gene was detected in 20 (42.6%) of the 47 PCa tissues by methylation-specific polymerase chain reaction. DNA methylation of the RIZ1 gene was not associated with clinicopathological features. DNA methylation of RIZ1 tended to be present more frequently in PCa specimens with a high Gleason score (16/30, 53.3%) than in those with a low Gleason score (4/17, 23.5%); however, this tendency was not statistically significant (P = 0.0675). Nuclear accumulation of p53 was observed in four (8.5%) of 47 PCa specimens by immunostaining. All four PCa specimens with nuclear accumulation of p53 were stage III disease and showed DNA methylation of RIZ1. However, of the remaining 43 cancers without nuclear accumulation of p53, DNA methylation of RIZ1 was observed in only 16 (37.2%) specimens (P = 0.0272). Of the three PCa cell lines, only the PC3 cell line showed loss of RIZ1 mRNA due to DNA methylation, and this loss was rectified by treatment with a demethylating agent, 5-Aza-2'-deoxycytidine. These results suggest that transcriptional inactivation of RIZ1 by aberrant DNA methylation may contribute to prostate carcinogenesis. Genetic alterations are likely associated with epigenetic alterations in PCa.
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Affiliation(s)
- Yasuhisa Hasegawa
- Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical Sciences, Minami-ku, Hiroshima 734-8551, Japan
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49
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Christensen GB, Camp NJ, Farnham JM, Cannon-Albright LA. Genome-wide linkage analysis for aggressive prostate cancer in Utah high-risk pedigrees. Prostate 2007; 67:605-13. [PMID: 17299800 DOI: 10.1002/pros.20554] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND It has been proposed that studying alternative phenotypes, such as tumor aggressiveness, may be a solution for overcoming the apparent heterogeneity that has hindered the identification of prostate cancer (PC) genes. We present the results of a genome-scan for predisposition to aggressive PC using the Utah high-risk pedigree resource. METHODS We identified 259 subjects with aggressive PC in 57 extended and nuclear families. Parametric and non-parametric multipoint linkage statistics were calculated for a genome-wide set of 401 microsatellite markers using the MCLINK software package. Stratification analyses by the number of affected subjects per pedigree (<5, >or=5) and the average age at diagnosis of affected subjects (<70 years, >or=70 years) were also performed. RESULTS No significant results were observed at the genome-wide level, but suggestive evidence for linkage was observed on chromosomes 9q (HLOD = 2.04) and 14q (HLOD = 2.08); several pedigrees showed individual evidence for linkage at each locus (LOD > 0.58). The subset of pedigrees with earlier age at onset demonstrated nominal linkage evidence on chromosomes 3q (HLOD = 1.79), 8q (HLOD = 1.67), and 20q (HLOD=1.82). The late-onset subset showed suggestive linkage on chromosome 6p (HLOD = 2.37) and the subset of pedigrees with fewer than five affected subjects showed suggestive linkage on chromosome 10p (HLOD = 1.99). CONCLUSIONS Linkage evidence observed on chromosomes 6p, 8q, and 20q support previously reported PC aggressiveness loci. While these results are encouraging, further research is necessary to identify the gene or genes responsible for PC aggressiveness and surmount the overarching problem of PC heterogeneity.
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Affiliation(s)
- G B Christensen
- Department of Biomedical Informatics, University of Utah School of Medicine, Utah, USA.
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50
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Sacco E, Pinto F, Brescia A, Pastore G, Gardi M, Volpe A, Bassi PF. Human Biobank in Uro-Oncological Research. Urologia 2007. [DOI: 10.1177/039156030707400203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Purpose Uro-oncological translational research requires clinical data and human biological tissues collected within a biological tissue bank (BTB). We are hereby outlining ethic-legal, methodological and technical issues of a BTB establishment process, focusing particularly on prostate cancer and Italian setting. Materials and Methods Review of literature data, and national and international regulations and guidelines; direct field experience of urological BTB; counseling of the different professionals involved. Results Within a BTB establishment process, it is of utmost importance to protect the donors’ privacy and rights through the programmatic adoption of the following procedures: 1) informed consent; 2) confidentiality protection thanks to anonymity of biological specimens and use of an “honest broker” method; 3) identification of a single responsible researcher; 4) dedicated and protected location; 5) approval of the Ethical Committee. There are two main organizational models of BTB: “systematic”, i.e. collecting specimens from all patients and through the same methodology; “project-driven”, i.e. prospectively selecting patients for a specific study and using the specific methods required by researchers. In the preliminary step it is necessary to establish detailed protocols of sampling and crioconservation techniques, and methods of validation and quality control. For prostate tissue sampling, several techniques have been described such as specimens of alternate slices, macro dissection, Tru-Cut. Conclusions Today BTBs are necessary in order to support molecular and translational research in uro-oncology and to overcome the limits of the research based only on clinical-pathological data. Ethic-legal and methodological issues related to BTBs are still requiring specific legislation and standardization of techniques.
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Affiliation(s)
- E. Sacco
- Urologia, Policlinico Universitario “Agostino Gemelli”, Università Cattolica del Sacro Cuore, Roma, Italia
| | - F. Pinto
- Urologia, Policlinico Universitario “Agostino Gemelli”, Università Cattolica del Sacro Cuore, Roma, Italia
| | - A. Brescia
- Urologia, Policlinico Universitario “Agostino Gemelli”, Università Cattolica del Sacro Cuore, Roma, Italia
| | - G. Pastore
- Urologia, Policlinico Universitario “Agostino Gemelli”, Università Cattolica del Sacro Cuore, Roma, Italia
| | - M. Gardi
- Urologia, Policlinico Universitario “Agostino Gemelli”, Università Cattolica del Sacro Cuore, Roma, Italia
| | - A. Volpe
- Urologia, Policlinico Universitario “Agostino Gemelli”, Università Cattolica del Sacro Cuore, Roma, Italia
| | - PF. Bassi
- Urologia, Policlinico Universitario “Agostino Gemelli”, Università Cattolica del Sacro Cuore, Roma, Italia
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