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Chen L, Liu Y, Zhang Q, Zhang M, Han X, Li Q, Xie T, Wu Q, Sui X. p53/PCDH17/Beclin-1 Proteins as Prognostic Predictors for Urinary Bladder Cancer. J Cancer 2019; 10:6207-6216. [PMID: 31772653 PMCID: PMC6856748 DOI: 10.7150/jca.37335] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 09/04/2019] [Indexed: 12/21/2022] Open
Abstract
Purpose: To determine whether p53, PCDH17, Beclin-1 expression is associated with clinicopathological characteristics of bladder cancer. Materials and Methods: 75 patients with non-muscle-invasive and muscle-invasive bladder cancer were included. Immunohistochemical staining for p53, PCDH17 and Beclin-1 were carried out on the same paraffin-embedded blocks serial sections of these patients who underwent surgery between 2010 and 2015. In addition, p53 gene mutations in these tumors were screened by DNA sequencing. Results: Forty-nine (66.7%) of 75 tumors had p53 gene mutations detected by DNA sequencing method. Of these tumors, 43 (86.0%) exhibited p53 high expression. Furthermore, p53 mutation and low expression of PCDH17 were significantly associated with muscle-invasive bladder cancer. Beclin-1 was also strongly associated with T stage. The p53 mutation, the expression of p53 and PCDH17 were significantly associated with survival from bladder cancer. In addition, patients with p53 high-expression or p53 mutation, PCDH17 low-expression and Beclin-1 low-expression significantly had a poor prognosis. Conclusions: Use of a DNA sequencing method to detect p53 gene mutations was consistent with an immunohistochemical method to detect p53 alterations. In conjunction with levels of p53/PCDH17/Beclin-1, p53 and PCDH17 were independently associated with prognosis; Beclin-1 only had a tendency towards overall survival. p53/PCDH17/Beclin-1 phenotype seems to play a more important role than p53 expression in bladder cancer outcome. It is also identified that p53/PCDH17, p53/Beclin-1 or PCDH17/Beclin-1 all have a cooperative and synergistic effect, which may provide us the potential biomarker for bladder cancer patients.
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Affiliation(s)
- Liuxi Chen
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Ying Liu
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Qi Zhang
- Department of Urology and Institute of Department of Urology, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Mingming Zhang
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Xuemeng Han
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Qiujie Li
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Tian Xie
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China.,Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Qibiao Wu
- State Key Laboratory of Quality Research in Chinese Medicines, Faculty of Chinese Medicine, Macau University of Science and Technology, Macau, P.R. China
| | - Xinbing Sui
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China.,Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang, China
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Guo RQ, Xiong GY, Yang KW, Zhang L, He SM, Gong YQ, He Q, Li XY, Wang ZC, Bao ZQ, Li XS, Zhang K, Zhou LQ. Detection of urothelial carcinoma, upper tract urothelial carcinoma, bladder carcinoma, and urothelial carcinoma with gross hematuria using selected urine-DNA methylation biomarkers: A prospective, single-center study. Urol Oncol 2018; 36:342.e15-342.e23. [PMID: 29706459 DOI: 10.1016/j.urolonc.2018.04.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 03/20/2018] [Accepted: 04/03/2018] [Indexed: 10/17/2022]
Abstract
INTRODUCTION Hematuria is the most common symptom of urothelial carcinomas (UC) but is often idiopathic. Cystoscopy is expensive which involves considerable patient discomfort, and conventional urine cytology for noninvasive UC detection and disease monitoring suffers from poor sensitivity. We aim to evaluate the performance of genes selected from a previous study in detecting UC, especially among patients with gross hematuria, as well as upper tract urothelial carcinoma (UTUC) and bladder carcinoma separately, in voided urine samples. METHODS Using methylation-specific polymerase chain reaction, we examined the promoter methylation status of 10 genes in voided urine samples among 473 patients at our institution, including 217 UC patients and 256 control subjects. RESULTS The final combination of VIM, CDH1, SALL3, TMEFF2, RASSF1A, BRCA1, GDF15, and ABCC6 identified UC with a sensitivity of 0.83 and a specificity of 0.60. Additionally, a panel of selected genes (CDH1, HSPA2, RASSF1A, TMEFF2, VIM, and GDF15) identified UTUC with a sensitivity of 0.82 and a specificity of 0.68, while a panel of selected genes (VIM, RASSF1A, GDF15, and TMEFF2) identified bladder carcinoma with a sensitivity of 0.82 and a specificity of 0.53. Remarkably, a different panel (CDH1, SALL3, THBS1, TMEFF2, VIM, and GDF15) identified UC in patients with gross hematuria with 0.89 sensitivity and 0.74 specificity, and sensitivity (0.91) and specificity (0.92) could be achieved when cytology was included. CONCLUSIONS The selected urine-DNA methylation biomarkers are reliable, noninvasive, and cost-effective diagnostic tools for bladder carcinoma and UTUC, especially among patients with gross hematuria.
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Affiliation(s)
- Run-Qi Guo
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China
| | - Geng-Yan Xiong
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China
| | - Kai-Wei Yang
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China
| | - Lei Zhang
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China
| | - Shi-Ming He
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China
| | - Yan-Qing Gong
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China
| | - Qun He
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China
| | - Xue-Ying Li
- Department of Medical Statistics, Peking University First Hospital, Beijing, China
| | - Zi-Cheng Wang
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China
| | - Zhen-Qing Bao
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China
| | - Xue-Song Li
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China.
| | - Kai Zhang
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China.
| | - Li-Qun Zhou
- Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Research Center for Genitourinary Oncology, Beijing, China.
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Guan B, Xing Y, Xiong G, Cao Z, Fang D, Li Y, Zhan Y, Peng D, Liu L, Li X, Zhou L. Predictive value of gene methylation for second recurrence following surgical treatment of first bladder recurrence of a primary upper-tract urothelial carcinoma. Oncol Lett 2018; 15:9397-9405. [PMID: 29805663 DOI: 10.3892/ol.2018.8498] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 09/12/2017] [Indexed: 12/18/2022] Open
Abstract
The clinical relevance of aberrant DNA promoter methylation is being increasingly recognized in urothelial carcinoma. The present study was conducted to explore the methylation status of patients with upper-tract urothelial carcinoma (UTUC) who experienced bladder recurrence, and to evaluate the predictive value of gene methylation for second bladder recurrence and tumor progression. A total of 85 patients with primary UTUC, who experienced bladder recurrence after radical nephroureterectomy, were enrolled between January 2001 and December 2013. Using methylation-sensitive polymerase chain reaction, the promoter methylation statuses of 10 genes were analyzed in the bladder tumor specimens. Among the patient group, 32 patients experienced second bladder recurrence, and bladder progression was detected in 16. With the exception of BRCA1, the methylation rate of the majority of genes tended to gradually increase to varying extents with the number of recurrences; a smaller proportion of primary tumors exhibited gene methylation when compared with the first recurrent tumors and second recurrent tumors. Univariate and multivariate Cox regression analyses revealed that unmethylated GDF15 [hazard ratio (HR)=0.36; 95% confidence interval (CI), 0.14-0.92] and methylated VIM (HR=2.91; 95% CI, 1.11-7.61) in the first recurrent bladder tumor, as well as male gender (HR=2.28; 95% CI, 1.06-4.87), first recurrence interval <8 months (HR=2.34; 95% CI, 1.15-4.78) and primary UTUC tumor size ≥5 cm (HR=3.48; 95% CI, 1.43-8.45) were independent risk factors for a second bladder recurrence after surgery for the first bladder recurrence; the Harrell's concordance index (c-index) for the related nomogram was 0.71 (95% CI: 0.61-0.81). Furthermore, methylated CDH1 (HR=2.91; 95% CI, 1.08-7.77) and VIM (HR=4.91; 95% CI, 1.11-21.7) in the first recurrent bladder tumor, male gender (HR=3.6; 95% CI, 1.1-11.73), and primary tumor stage T2-T4 (HR=4.57; 95% CI, 1.22-17.13), multifocality (HR=3.64; 95% CI, 1.19-11.16) and size ≥5 cm (HR=3.1; 95% CI, 1.91-10.54) for the primary UTUC were considered to be predictors of tumor progression; the c-index for the nomogram was 0.88 (95% CI, 0.69-0.92). The present findings demonstrated that promoter methylation of cancer-related genes was frequently observed in patients with urothelial carcinoma, and that the gene methylation rate of certain genes tended to gradually increase with the number of bladder recurrences. This may be used as a predictive factor for a second bladder recurrence and tumor progression after the surgical treatment of the first bladder recurrence.
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Affiliation(s)
- Bao Guan
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
| | - Yunchao Xing
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
| | - Gengyan Xiong
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
| | - Zhenpeng Cao
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
| | - Dong Fang
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
| | - Yifan Li
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
| | - Yonghao Zhan
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
| | - Ding Peng
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
| | - Libo Liu
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
| | - Xuesong Li
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
| | - Liqun Zhou
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, P.R. China
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MIEN1 is tightly regulated by SINE Alu methylation in its promoter. Oncotarget 2018; 7:65307-65319. [PMID: 27589566 PMCID: PMC5323157 DOI: 10.18632/oncotarget.11675] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 08/18/2016] [Indexed: 01/26/2023] Open
Abstract
Migration and invasion enhancer 1 (MIEN1) is a novel gene involved in prostate cancer progression by enhancing prostate cancer cell migration and invasion. DNA methylation, an important epigenetic regulation, is one of the most widely altered mechanisms in prostate cancer. This phenomenon frames the basis to study the DNA methylation patterns in the promoter region of MIEN1. Bisulfite pyrosequencing demonstrates the MIEN1 promoter contains a short interspersed nuclear Alu element (SINE Alu) repeat sequence. Validation of methylation inhibition on MIEN1 was performed using nucleoside analogs and non-nucleoside inhibitors and resulted in an increase in both MIEN1 RNA and protein in normal cells. MIEN1 mRNA and protein increases upon inhibition of individual DNA methyltransferases using RNA interference technologies. Furthermore, dual luciferase reporter assays, in silico analysis, and chromatin immunoprecipitation assays identified a sequence upstream of the transcription start site that has a site for binding of the USF transcription factors. These results suggest the MIEN1 promoter has a SINE Alu region that is hypermethylated in normal cells leading to repression of the gene. In cancer, the hypomethylation of a part of this repeat, in addition to the binding of USF, results in MIEN1 expression.
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Current Concepts of Epigenetics in Testicular Cancer. Indian J Surg Oncol 2017; 8:169-174. [PMID: 28546713 DOI: 10.1007/s13193-016-0593-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 09/12/2016] [Indexed: 12/12/2022] Open
Abstract
Testicular germ cell tumors (GCTs) are characterized into seminomas (SGCTs) and non-seminomatous testicular germ cell tumors (NSGCTs). Serum tumor markers (STMs) play an important role in testicular cancer as they provide useful information for diagnosis, staging, and detection of recurrence. Nonetheless, additional tumor markers for early diagnosis and therapeutic options are required to enhance specificity of serological diagnosis of testes cancers. Epigenetics is defined as inherited changes in gene expression that are not encoded in the DNA structure. Epigenetic changes include DNA methylation, histone modifications, and microRNA (miRNA) regulation. It is through the study of epigenetics that diagnostic methods for early detection and novel therapeutic strategies may be established for testicular cancer. We performed a comprehensive review of the English medical literature in PubMed by combining search terms including DNA methylation, histone modifications, microRNA (miRNA) regulation, epigenetics, and testicular cancer. DNA methylation is the most extensively studied epigenetic modification. It consists of the addition of a methyl group to nucleotide bases. It has been reported that SGCT contain reduced levels of DNA methylation compared to NSGCT. MiRNAs are small non-coding RNAs that regulate posttranscriptional gene expression. It has been suggested that miRNAs may play a role in the pathogenesis of GCT. Specific expression patterns have been displayed by various miRNAs in patients with GCT. Histones are proteins intertwined with coiled, double-stranded genomic DNA that form a structure known as a nucleosome. The most widely studied histone modifications include acetylation, methylation, and phosphorylation. Methylation of histone proteins has been found in all types of NSGCT. Epigenetics may offer an additional and effective tool in establishing a diagnosis of GCT of the testes, including prognostic information and perhaps enabling targeted treatment in patients with testicular GCT.
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Gurioli G, Salvi S, Martignano F, Foca F, Gunelli R, Costantini M, Cicchetti G, De Giorgi U, Sbarba PD, Calistri D, Casadio V. Methylation pattern analysis in prostate cancer tissue: identification of biomarkers using an MS-MLPA approach. J Transl Med 2016; 14:249. [PMID: 27576364 PMCID: PMC5006561 DOI: 10.1186/s12967-016-1014-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 08/16/2016] [Indexed: 12/21/2022] Open
Abstract
Background Epigenetic silencing mediated by CpG island methylation is a common feature of many cancers. Characterizing aberrant DNA methylation changes associated with prostate carcinogenesis could potentially identify a tumour-specific methylation pattern, facilitating the early diagnosis of prostate cancer. The objective of the study was to assess the methylation status of 40 tumour suppressor genes in prostate cancer and healthy prostatic tissues. Methods We used methylation specific-multiplex ligation probe amplification (MS-MLPA) assay in two independent case series (training and validation set). The training set comprised samples of prostate cancer tissue (n = 40), healthy prostatic tissue adjacent to the tumor (n = 26), and healthy non prostatic tissue (n = 23), for a total of 89 DNA samples; the validation set was composed of 40 prostate cancer tissue samples and their adjacent healthy prostatic tissue, for a total of 80 DNA samples. Methylation specific-polymerase chain reaction (MSP) was used to confirm the results obtained in the validation set. Results We identified five highly methylated genes in prostate cancer: GSTP1, RARB, RASSF1, SCGB3A1, CCND2 (P < 0.0001), with an area under the ROC curve varying between 0.89 (95 % CI 0.82–0.97) and 0.95 (95 % CI 0.90–1.00). Diagnostic accuracy ranged from 80 % (95 % CI 70–88) to 90 % (95 % CI 81–96). Moreover, a concordance rate ranging from 83 % (95 % CI 72–90) to 89 % (95 % CI 80–95) was observed between MS-MLPA and MSP. Conclusions Our preliminary results highlighted that hypermethylation of GSTP1, RARB, RASSF1, SCGB3A1 and CCND2 was highly tumour-specific in prostate cancer tissue. Electronic supplementary material The online version of this article (doi:10.1186/s12967-016-1014-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Giorgia Gurioli
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Via P. Maroncelli 40, 47014, Meldola, Italy
| | - Samanta Salvi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Via P. Maroncelli 40, 47014, Meldola, Italy
| | - Filippo Martignano
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Via P. Maroncelli 40, 47014, Meldola, Italy
| | - Flavia Foca
- Unit of Biostatistics and Clinical Trials, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Via P. Maroncelli 40, 47014, Meldola, Italy
| | - Roberta Gunelli
- Department of Urology, Morgagni Pierantoni Hospital, Forlì, Italy
| | | | | | - Ugo De Giorgi
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Via P. Maroncelli 40, 47014, Meldola, Italy
| | - Persio Dello Sbarba
- Dipartimento di Scienze Biomediche, Sperimentali e Cliniche, University of Florence, Florence, Italy
| | - Daniele Calistri
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Via P. Maroncelli 40, 47014, Meldola, Italy
| | - Valentina Casadio
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Via P. Maroncelli 40, 47014, Meldola, Italy.
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GSTP1 Methylation and Protein Expression in Prostate Cancer: Diagnostic Implications. DISEASE MARKERS 2016; 2016:4358292. [PMID: 27594734 PMCID: PMC4995330 DOI: 10.1155/2016/4358292] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 06/21/2016] [Accepted: 07/03/2016] [Indexed: 01/06/2023]
Abstract
GSTP1 belongs to the GSTs family, a group of enzymes involved in detoxification of exogenous substances and it also plays an important role in cell cycle regulation. Its dysregulation correlates with a large variety of tumors, in particular with prostate cancer. We investigated GSTP1 methylation status with methylation specific PCR (MS-PCR) in prostate cancer (PCa) and in benign tissue of 56 prostatectomies. We also performed immunohistochemistry (IHC) so as to correlate gene methylation with gene silencing. GSTP1 appears methylated in PCa and not in healthy tissue; IHC confirmed that methylation leads to protein underexpression (p < 0.001). GSTP1 is highly expressed in basal cell layer and luminal cells in benign glands while in prostatic intraepithelial neoplasia (PIN) it stains only basal cell layer, whereas PCa glands are completely negative. We demonstrated that methylation leads to underexpression of GSTP1. The progressive loss of GSTP1 expression from healthy glands to PIN and to PCa glands underlines its involvement in early carcinogenesis.
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Angulo JC, Redondo C, Sánchez-Chapado M, Colás B, Ropero S, López JI. Survival predictors in patients with prostate adenocarcinoma with hormonal blockade. Pathol Res Pract 2016; 212:899-903. [PMID: 27502465 DOI: 10.1016/j.prp.2016.07.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 07/19/2016] [Accepted: 07/22/2016] [Indexed: 10/21/2022]
Abstract
Ki-67 index and clinical-pathological factors such as the Gleason score and the presence of neuroendocrine differentiation have been used for predicting survival in patients with prostate cancer. We examined prostate tissue from 45 patients with advanced prostate cancer who were treated with maximal androgen blockade and analysed their cancer-specific survival (CSS). We assessed the Gleason index, performed an immunohistochemical analysis of Ki-67 (MIB-1) and determined the presence of neuroendocrine differentiation (chromogranin A). A survival study was conducted using Kaplan-Meier curves (log-rank test) and a Cox regression analysis. Twenty-four patients (53.3%) died from the disease, with a mean follow-up of 68.7±7.7 months (56.6% CSS at 5 years and 31.8% at 10 years). In the univariate analysis, survival was associated with an interquartile distribution of Ki-67 (0-5, 6-12%, 13-25%, >25%; log-rank, p=0.01), Gleason 5 (total index 9-10; log-rank, p=0.002) and the presence of metastases during the diagnosis (M1; log-rank, p=0.004) but not to cT category (T3-T4; log-rank, p=0.26) or neuroendocrine differentiation (immunohistochemically positive tumour cell nests; log-rank, p=0.46). The multivariate analysis revealed that a Ki-67 index ≤12% (HR, 0.22; p=0.0009) and the absence of metastases (M0) during diagnosis (HR, 0.17; p=0.0002) were protective factors in this population. In conclusion, Ki-67 proliferation index and the lack of metastases at diagnosis predict CSS in patients with advanced prostate cancer who undergo hormonal blockade. Neuroendocrine differentiation in tumour tissue had no prognostic value in this study.
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Affiliation(s)
- Javier C Angulo
- Clinical Department, Faculty of Biomedical Sciences, European University of Madrid, Laureate International Universities, Madrid, Spain; Department of Urology, University Hospital of Getafe, Madrid, Spain
| | - Cristina Redondo
- Department of Urology, University Hospital of Getafe, Madrid, Spain
| | - Manuel Sánchez-Chapado
- Department of Urology, University Hospital Príncipe de Asturias, University of Alcala, Alcala de Henares, Madrid, Spain
| | - Begoña Colás
- Department of Systems Biology, Biochemical and Molecular Biology Teaching Unit, University of Alcala, Alcala de Henares, Madrid, Spain
| | - Santiago Ropero
- Department of Systems Biology, Biochemical and Molecular Biology Teaching Unit, University of Alcala, Alcala de Henares, Madrid, Spain
| | - José I López
- Department of Pathology, Cruces University Hospital, BioCruces Institute, University of the Basque Country (UPV/EHU), Barakaldo, Bizkaia, Spain.
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Poh WJ, Wee CPP, Gao Z. DNA Methyltransferase Activity Assays: Advances and Challenges. Am J Cancer Res 2016; 6:369-91. [PMID: 26909112 PMCID: PMC4737724 DOI: 10.7150/thno.13438] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/12/2015] [Indexed: 12/28/2022] Open
Abstract
DNA methyltransferases (MTases), a family of enzymes that catalyse the methylation of DNA, have a profound effect on gene regulation. A large body of evidence has indicated that DNA MTase is potentially a predictive biomarker closely associated with genetic disorders and genetic diseases like cancer. Given the attention bestowed onto DNA MTases in molecular biology and medicine, highly sensitive detection of DNA MTase activity is essential in determining gene regulation, epigenetic modification, clinical diagnosis and therapeutics. Conventional techniques such as isotope labelling are effective, but they often require laborious sample preparation, isotope labelling, sophisticated equipment and large amounts of DNA, rendering them unsuitable for uses at point-of-care. Simple, portable, highly sensitive and low-cost assays are urgently needed for DNA MTase activity screening. In most recent technological advances, many alternative DNA MTase activity assays such as fluorescent, electrochemical, colorimetric and chemiluminescent assays have been proposed. In addition, many of them are coupled with nanomaterials and/or enzymes to significantly enhance their sensitivity. Herein we review the progress in the development of DNA MTase activity assays with an emphasis on assay mechanism and performance with some discussion on challenges and perspectives. It is hoped that this article will provide a broad coverage of DNA MTase activity assays and their latest developments and open new perspectives toward the development of DNA MTase activity assays with much improved performance for uses in molecular biology and clinical practice.
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Taleat Z, Mathwig K, Sudhölter EJ, Rassaei L. Detection strategies for methylated and hypermethylated DNA. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2014.11.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Ashour N, Angulo JC, Andrés G, Alelú R, González-Corpas A, Toledo MV, Rodríguez-Barbero JM, López JI, Sánchez-Chapado M, Ropero S. A DNA hypermethylation profile reveals new potential biomarkers for prostate cancer diagnosis and prognosis. Prostate 2014; 74:1171-82. [PMID: 24961912 DOI: 10.1002/pros.22833] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 05/12/2014] [Indexed: 01/05/2023]
Abstract
BACKGROUND DNA hypermethylation has emerged as a novel molecular biomarker for the evaluation of prostate cancer diagnosis and prognosis. Defining the specific gene hypermethylation profile for prostate cancer could involve groups of genes that specifically discriminate patients with indolent and aggressive tumors. METHODS Genome-wide methylation analysis was performed on 83 tumor and 10 normal prostate samples using the GoldenGate Methylation Cancer Panel I (Illumina, Inc.). All clinical stages of disease were considered. RESULTS We found 41 genes hypermethylated in more than 20% of the tumors analyzed (P < 0.01). Of these, we newly identified GSTM2 and PENK as being genes that are hypermethylated in prostate cancer and that were simultaneously methylated in 40.9% of the tumors analyzed. We also identified panels of genes that are more frequently methylated in tumor samples with clinico-pathological indicators of poor prognosis: a high Gleason score, elevated Ki-67, and advanced disease. Of these, we found simultaneous hypermethylation of CFTR and HTR1B to be common in patients with a high Gleason score and high Ki-67 levels; this might indicate the population at higher risk of therapeutic failure. The DNA hypermethylation profile was associated with cancer-specific mortality (log-rank test, P = 0.007) and biochemical recurrence-free survival (log-rank test, P = 0.0008). CONCLUSIONS Our findings strongly indicate that epigenetic silencing of GSTM2 and PENK is a common event in prostate cancer that could be used as a molecular marker for prostate cancer diagnosis. In addition, simultaneous HTR1B and CFTR hypermethylation could help discriminate aggressive from indolent prostate tumors.
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Affiliation(s)
- Nadia Ashour
- Departamento de Biología de Sistemas, Unidad Docente de Bioquímica y Biología Molecular, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
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The role of matrix metalloproteinase MMP-9 and TIMP-2 tissue inhibitor of metalloproteinasas as serum markers of bladder cancer. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.acuroe.2013.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ramón de Fata F, Ferruelo A, Andrés G, Gimbernat H, Sánchez-Chapado M, Angulo JC. The role of matrix metalloproteinase MMP-9 and TIMP-2 tissue inhibitor of metalloproteinases as serum markers of bladder cancer. Actas Urol Esp 2013; 37:480-8. [PMID: 23916137 DOI: 10.1016/j.acuro.2013.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 05/29/2013] [Indexed: 01/24/2023]
Abstract
INTRODUCTION The diagnosis and molecular staging of bladder cancer based on the detection of gelatinases mRNA (MMP-2 and MMP-9) in peripheral blood circulating and mononuclear cells have shown promising results. We analyze if the determination of the corresponding protein synthesis products makes it possible to diagnose and characterize patients with bladder cancer. MATERIAL AND METHOD Quantification of the serum levels of MMP-2, MMP-9 and TIMP-2 in a series of 42 individuals (31 patients with bladder cancer in different stages and 11 healthy controls) using the ELISA technique was carried out. The determinations were compared between cases and controls (Mann-Whitney U) and between different groups of tumors (Mann-Whitney U or Kruskal-Wallis), according to the clinical-pathological characteristics (age, gender, T category, M category or grade). Diagnostic yield of these markers was evaluated by analysis of the ROC curves. RESULTS There is a correlation between the determinations of MMP-2 and TIMP-2 (R=.699; P>.0001) and MMP-9 and TIMP-2 (R=.305; P=.049). Patients with bladder cancer have higher levels of MMP-9 (p<0.0001) and TIMP-2 (P=.047) than the controls. Furthermore, the MMP-9/TIMP-2 ratio is also superior in cancer patients (P<.001). Differences were not detected between cancer and controls regarding age (P=.64) or gender (P=.64). Differences were also not detected regarding MMP-2 (P=.35) or MMP-2/TIMP-2 rate (P=.45). Within the cancer patient population, the MMP-2 and MMP-9 values differ according to T category (P=.022 and P=.038, respectively) and those of the TIMP-2 according to M category (P=.036). ROC curve analysis showed that both MMP-9 and the MMP-9/TIMP-2 ratio discriminate patients with cancer and controls, with equivalent diagnostic accuracy (ABC 0.953) and cut offs of 3.93 ng/mL (S 90%; Sp 81%) and 0.053 ng/mL (S 96%; Sp 84%), respectively. CONCLUSIONS The results obtained suggest that both serum MMP-9 and TIMP-2 would have an application in the prediction of the development and progression of bladder cancer, and a potential utility as clinical markers of the disease. Multicenter, prospective studies that confirm their preliminary results are necessary.
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Affiliation(s)
- F Ramón de Fata
- Servicio de Urología, Hospital Universitario de Getafe, Fundación para la Investigación Biomédica, Universidad Europea de Madrid, Madrid, España.
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