1
|
Wankhede D, Grover S, Hofman P. SMARCA4 alterations in non-small cell lung cancer: a systematic review and meta-analysis. J Clin Pathol 2024:jcp-2024-209394. [PMID: 38702192 DOI: 10.1136/jcp-2024-209394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 04/22/2024] [Indexed: 05/06/2024]
Abstract
AIMS A mutation in the SMARCA4 gene which encodes BRG1, a common catalytic subunit of switch/sucrose non-fermentable chromatin-remodelling complexes, plays a vital role in carcinogenesis. SMARCA4 mutations are present in approximately 10% of non-small cell lung cancers (NSCLC), making it a crucial gene in NSCLC, but with varying prognostic associations. To explore this, we conducted a systematic review and meta-analysis on the prognostic significance of SMARCA4 mutations in NSCLC. METHODS Electronic database search was performed from inception to December 2022. Study characteristics and prognostic data were extracted from each eligible study. Depending on heterogeneity, pooled HR and 95% CI were derived using the random-effects or fixed-effects models. RESULTS 8 studies (11 cohorts) enrolling 8371 patients were eligible for inclusion. Data on overall survival (OS) and progression-free survival (PFS) were available from 8 (10 cohorts) and 1 (3 cohorts) studies, respectively. Comparing SMARCA4-mutated NSCLC patients with SMARCA4-wild-type NSCLC patients, the summary HRs for OS and PFS were 1.49 (95% CI 1.18 to 1.87; I2=84%) and 3.97 (95% CI 1.32 to 11.92; I2=79%), respectively. The results from the trim-and-fill method for publication bias and sensitivity analysis were inconsistent with the primary analyses. Three studies reported NSCLC prognosis for category I and II mutations separately; category I was significantly associated with OS. CONCLUSION Our findings suggest that SMARCA4 mutation negatively affects NSCLC OS and PFS. The prognostic effects of SMARCA4-co-occurring mutations and the predictive role of SMARCA4 mutation status in immunotherapy require further exploration.
Collapse
Affiliation(s)
- Durgesh Wankhede
- German Cancer Research Center, Heidelberg, Germany
- Faculty of Medicine, Univeristy of Heidelberg, Heidelberg, Germany
| | - Sandeep Grover
- Center for Human Genetics, Universitatsklinikum Giessen und Marburg - Standort Marburg, Marburg, Germany
| | - Paul Hofman
- Laboratory of Clinical and Experimental Pathology, Pasteur Hospital, University Côte d'Azur, Nice, France
- Hospital-Integrated Biobank BB-0033-00025, Pasteur Hospital, Nice, France
- University Hospital Federation OncoAge, CHU de Nice, University Côte d'Azur, Nice, France
| |
Collapse
|
2
|
Lin X, Yoshikawa N, Liu W, Matsukawa T, Nakamura K, Yoshihara M, Koya Y, Sugiyama M, Tamauchi S, Ikeda Y, Yokoi A, Shimizu Y, Kajiyama H. DDIT4 Facilitates Lymph Node Metastasis via the Activation of NF-κB Pathway and Epithelial-Mesenchymal Transition. Reprod Sci 2023; 30:2829-2841. [PMID: 37016173 DOI: 10.1007/s43032-023-01230-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 03/27/2023] [Indexed: 04/06/2023]
Abstract
This study was aimed to identify a novel metastasis-promoting molecule and elucidate its functional and prognostic roles in cervical cancer. DDIT4 (DNA-damage-inducible transcript 4), a hypoxia-inducible gene, was identified by analyzing multiple microarray databases. The correlation between DDIT4 expression in immunohistochemistry and clinicopathological characteristics in the public database and our cohort was evaluated by statistical analysis. Transwell® assay and wound-healing assay to determine cell migration and invasion were performed. DDIT4 was knocked down using siRNA or lentiviral vectors. The potential downstream pathways of DDIT4 were explored and verified by a gene set enrichment analysis and western blotting. The in vivo metastatic capability was determined with the use of an intraperitoneal injection mouse model. In the analysis of the public database and our cohort, DDIT4 high expression was significantly related to short overall survival and lymph node metastasis in patients with early-stage cervical cancer. The knockdown of DDIT4 attenuated the migration and invasion activity of tumor cells in vitro and reduced the expression of epithelial-mesenchymal transition (EMT)-related proteins and the NF-κB pathway in cervical cancer cells. DDIT4 also promoted tumor progression in the mouse model. Our results indicate that DDIT4 can be a prognostic indicator in cervical cancer and promote lymph node metastasis, augmenting malignancy via the EMT and NF-kB pathways.
Collapse
Affiliation(s)
- Xinxin Lin
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Nobuhisa Yoshikawa
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan.
| | - Wenting Liu
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tetsuya Matsukawa
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Kae Nakamura
- Center for Low-Temperature Plasma Sciences, Nagoya University, Nagoya, Japan
| | - Masato Yoshihara
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Yoshihiro Koya
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mai Sugiyama
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Satoshi Tamauchi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Yoshiki Ikeda
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Akira Yokoi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Yusuke Shimizu
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| |
Collapse
|
3
|
Sameh R, Mostafa N, Ramadan M, AbdelRaouf S, Abdelwahab K. Prognostic significance of EZH2 and ARID1A expression in urothelial carcinoma: an immunohistochemical study. J Histotechnol 2021; 45:21-28. [PMID: 34493171 DOI: 10.1080/01478885.2021.1973309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Enhancer of zeste homolog 2 (EZH2) and AT-rich interactive domain 1A (ARID1A) expression in urothelial carcinoma (UC) has not been well studied. ARID1A is a novel tumor suppressor gene coding for a chromatin remodeling protein that is mutated in urinary bladder cancer. The enhancer of zeste homolog 2 (EZH2) is a transcriptional repressor involved in gene silencing. Amplification of EZH2 has been reported in several malignancies. This study analyzed the immunohistochemical expression of EZH2 and ARID1A in 56 cases of UC that included (n = 21) cases of radical cystectomy and (n = 35) cases of transurethral resections of bladder tumor (TURBT) with muscle fibers and immunotherapy with adjuvant intravesical bacillus Calmette-Guerin (BCG). The predicting role of both markers for tumor recurrence and recurrence-free survival (RFS) was also analyzed. High EZH2 marker expression was observed in 75% of cases while 78.6% of cases had low ARID1A marker expression. There was a significant negative correlation between the two markers where high EZH2 and low ARID1A expression was significantly associated with higher tumor grade, stage, presence of muscle invasion, lymph node metastasis, presence of concomitant carcinoma in situ (CIS) and higher incidence of recurrence with shorter RFS rate. It was concluded that EZH2 and ARID1A play a role in tumor carcinogenesis and differentiation and could be considered as independent prognostic factors in UC and for use as a potential therapeutic target.
Collapse
Affiliation(s)
- Reham Sameh
- Pathology Department, Faculty of Human Medicine, Zagazig University, Zagazig, Egypt
| | - Naglaa Mostafa
- Pathology Department, Faculty of Human Medicine, Zagazig University, Zagazig, Egypt
| | - Mohamed Ramadan
- Pathology Department, Faculty of Human Medicine, Zagazig University, Zagazig, Egypt
| | - Samar AbdelRaouf
- Pathology Department, Faculty of Human Medicine, Zagazig University, Zagazig, Egypt
| | - Khaled Abdelwahab
- Urology Department, Faculty of Human Medicine, Zagazig University, Zagazig, Egypt
| |
Collapse
|
4
|
Alessi JV, Ricciuti B, Spurr LF, Gupta H, Li YY, Glass C, Nishino M, Cherniack AD, Lindsay J, Sharma B, Felt KD, Rodig SJ, Cheng ML, Sholl LM, Awad MM. SMARCA4 and Other SWItch/Sucrose NonFermentable Family Genomic Alterations in NSCLC: Clinicopathologic Characteristics and Outcomes to Immune Checkpoint Inhibition. J Thorac Oncol 2021; 16:1176-1187. [PMID: 33845210 DOI: 10.1016/j.jtho.2021.03.024] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/17/2021] [Accepted: 03/21/2021] [Indexed: 02/06/2023]
Abstract
INTRODUCTION The SWItch/Sucrose Nonfermentable (SWI/SNF) chromatin remodeling complex acts as a regulatory component of transcription, and inactivating mutations (muts) within the complex are implicated in genomic instability, higher tumor mutational burden, and an aggressive cancer phenotype. Whether SMARCA4 and other SWI/SNF alterations are independent prognostic factors or associated with clinical outcomes to immune checkpoint inhibitors (ICIs) in NSCLC remains unclear. METHODS We collected clinicopathologic and genomic data from patients with NSCLC who underwent targeted next-generation sequencing at the Dana-Farber Cancer Institute. Tumors were characterized on the basis of the presence or absence of muts across a set of six SWI/SNF genes (ARID1A, ARID1B, ARID2, PBRM1, SMARCA4, and SMARCB1). RESULTS Of 2689 patients with NSCLC, 20.6% (N = 555) had SWI/SNF genomic alterations. Compared with SWI/SNF wild-type (wt) NSCLC, patients with SWI/SNF-mutant NSCLCs had a lower prevalence of concurrent targetable driver muts (33.2% versus 22.2%; p < 0.001), a higher tumor mutational burden (median 8.5 versus 12.2 muts/megabase; p < 0.001), and a shorter median overall survival (mOS) from the time of advanced disease diagnosis (25.0 versus 19.3 mo, p = 0.01); the detrimental effect in OS seemed to be largely driven by SMARCA4 muts (mOS: 25.0 for SMARCA4 wt versus 15.6 mo for SMARCA4 mutant; p < 0.001). Among 532 patients who received ICIs, 25.5% (N = 136) harbored SWI/SNF muts. From the start of immunotherapy, there was no difference in objective response rate (ORR = 19.9% versus 25.0%, p = 0.2), median progression-free survival (mPFS = 3.0 versus 3.0 mo, hazard ratio [HR] = 0.96 [95% confidence interval [CI] = 0.77-1.18], p = 0.7), or mOS (13.1 versus 9.5 mo, HR = 0.81 [95% CI: 0.64-1.02], p = 0.07) in SWI/SNF-wt versus SWI/SNF-mutant NSCLC, respectively. Nevertheless, among KRAS-mutant NSCLCs treated with ICIs (N = 176), a concurrent SWI/SNF mut (N = 39) conferred a numerically lower ORR (21.9% versus 12.8%, p = 0.2), a significantly shorter mPFS (4.1 versus 1.8 mo, HR = 0.57 [95% CI: 0.38-0.84], p = 0.005), and a significantly shorter mOS (15.5 versus 8.2 mo, HR = 0.56 [95% CI: 0.36-0.86], p = 0.008). The deleterious effect on immunotherapy outcomes in KRAS-mutant NSCLC was most pronounced in the SMARCA4-mutant subset (N = 17), with a lower ORR (22% versus 0%, p = 0.03), a significantly shorter mPFS (4.1 versus 1.4 mo, HR = 0.25 [95% CI: 0.14-0.42], p < 0.001), and a significantly shorter mOS (15.1 versus 3.0 mo, HR = 0.29 [95% CI: 0.17-0.50], p < 0.001) compared with SMARCA4-wt KRAS-mutant NSCLCs. CONCLUSIONS Although there were no associations between SWI/SNF mut status and immunotherapy efficacy in the overall NSCLC cohort, the presence of a SMARCA4 alteration may confer a worse outcome to immunotherapy among KRAS-mutant NSCLCs.
Collapse
Affiliation(s)
- Joao V Alessi
- Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Biagio Ricciuti
- Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Liam F Spurr
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts; Cancer Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts; Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, Illinois
| | - Hersh Gupta
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts; Cancer Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Yvonne Y Li
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts; Cancer Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Carolyn Glass
- Department of Pathology, Duke University Hospital, Durham, North Carolina
| | - Mizuki Nishino
- Department of Radiology, Brigham and Women's Hospital, Boston, Massachusetts; Department of Imaging, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Andrew D Cherniack
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts; Cancer Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - James Lindsay
- Knowledge Systems Group, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Bijaya Sharma
- ImmunoProfile, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Kristen D Felt
- ImmunoProfile, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Scott J Rodig
- Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts; Center for Immuno-Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Michael L Cheng
- Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Lynette M Sholl
- Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts
| | - Mark M Awad
- Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts.
| |
Collapse
|
5
|
The SWI/SNF complex in cancer - biology, biomarkers and therapy. Nat Rev Clin Oncol 2020; 17:435-448. [PMID: 32303701 DOI: 10.1038/s41571-020-0357-3] [Citation(s) in RCA: 278] [Impact Index Per Article: 69.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2020] [Indexed: 12/11/2022]
Abstract
Cancer genome-sequencing studies have revealed a remarkably high prevalence of mutations in genes encoding subunits of the SWI/SNF chromatin-remodelling complexes, with nearly 25% of all cancers harbouring aberrations in one or more of these genes. A role for such aberrations in tumorigenesis is evidenced by cancer predisposition in both carriers of germline loss-of-function mutations and genetically engineered mouse models with inactivation of any of several SWI/SNF subunits. Whereas many of the most frequently mutated oncogenes and tumour-suppressor genes have been studied for several decades, the cancer-promoting role of mutations in SWI/SNF genes has been recognized only more recently, and thus comparatively less is known about these alterations. Consequently, increasing research interest is being focused on understanding the prognostic and, in particular, the potential therapeutic implications of mutations in genes encoding SWI/SNF subunits. Herein, we review the burgeoning data on the mechanisms by which mutations affecting SWI/SNF complexes promote cancer and describe promising emerging opportunities for targeted therapy, including immunotherapy with immune-checkpoint inhibitors, presented by these mutations. We also highlight ongoing clinical trials open specifically to patients with cancers harbouring mutations in certain SWI/SNF genes.
Collapse
|
6
|
Cao Q, Wang C, Ding Y, Xu D, Qian S, Shen H, Qi J. ARID1A upregulation predicts better survival in patients with urothelial bladder carcinoma. J Int Med Res 2020; 48:300060519895687. [PMID: 31891283 PMCID: PMC7783253 DOI: 10.1177/0300060519895687] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Objective AT-rich interactive domain-containing protein 1A (ARID1A) is frequently
mutated or deficient in various types of tumors. However, the role of ARID1A
in bladder cancer remains unclear. We aimed to evaluate ARID1A expression
and its biological role and correlation with prognosis in patients with
urothelial bladder carcinoma (BUC). Methods ARID1A expression levels in BUC and normal tissues were assessed by
immunohistochemistry and correlated with clinicopathological characteristics
and patient outcomes. Downregulation of ARID1A was mimicked by transfection
with small interfering RNA in T24 bladder cancer cells, and the effects on
cell proliferation and migration were evaluated. Results ARID1A expression was significantly reduced in BUC tissues and was
significantly associated with T stage and AJCC stage. Upregulation of ARID1A
predicted a better prognosis in BUC patients. ARID1A expression and lymph
node status were identified as independent prognostic factors for overall
survival. Silencing of ARID1A promoted the proliferation of
BUC cells. Conclusions ARID1A may represent a novel diagnostic and prognostic biomarker in patients
with BUC.
Collapse
Affiliation(s)
- Qifeng Cao
- Department of Urology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chen Wang
- Department of Urology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Ding
- Department of Urology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ding Xu
- Department of Urology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Subo Qian
- Department of Urology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haibo Shen
- Department of Urology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Qi
- Department of Urology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
7
|
Dugas SG, Müller DC, Le Magnen C, Federer‐Gsponer J, Seifert H, Ruiz C, Savic Prince S, Vlajnic T, Zellweger T, Mertz KD, Bacon JVW, Wyatt AW, Rentsch CA, Bubendorf L. Immunocytochemistry for ARID1A as a potential biomarker in urine cytology of bladder cancer. Cancer Cytopathol 2019; 127:578-585. [DOI: 10.1002/cncy.22167] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 07/08/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Sarah G. Dugas
- Department of Urology University Hospital Basel Basel Switzerland
- Institute of Pathology University Hospital Basel Basel Switzerland
| | - David C. Müller
- Institute of Pathology University Hospital Basel Basel Switzerland
| | - Clémentine Le Magnen
- Department of Urology University Hospital Basel Basel Switzerland
- Institute of Pathology University Hospital Basel Basel Switzerland
| | | | | | - Christian Ruiz
- Institute of Pathology University Hospital Basel Basel Switzerland
| | | | - Tatjana Vlajnic
- Institute of Pathology University Hospital Basel Basel Switzerland
| | | | - Kirsten D. Mertz
- Institute of Pathology Cantonal Hospital Baselland Liestal Switzerland
| | - Jack V. W. Bacon
- Vancouver Prostate Centre, Department of Urologic Sciences University of British Columbia Vancouver British Columbia Canada
| | - Alexander W. Wyatt
- Vancouver Prostate Centre, Department of Urologic Sciences University of British Columbia Vancouver British Columbia Canada
| | | | - Lukas Bubendorf
- Institute of Pathology University Hospital Basel Basel Switzerland
| |
Collapse
|
8
|
Peng Y, Kajiyama H, Yuan H, Nakamura K, Yoshihara M, Yokoi A, Fujikake K, Yasui H, Yoshikawa N, Suzuki S, Senga T, Shibata K, Kikkawa F. PAI-1 secreted from metastatic ovarian cancer cells triggers the tumor-promoting role of the mesothelium in a feedback loop to accelerate peritoneal dissemination. Cancer Lett 2018; 442:181-192. [PMID: 30429105 DOI: 10.1016/j.canlet.2018.10.027] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 10/01/2018] [Accepted: 10/16/2018] [Indexed: 10/28/2022]
Abstract
The mesothelium, covered by a continuous monolayer of mesothelial cells, is the first protective barrier against metastatic ovarian cancer. However, mesothelial cells release tumor-promoting factors that accelerate the process of peritoneal metastasis. We identified cancer-associated mesothelial cells (CAMs) that had tumor-promoting potential. Here, we found that plasminogen activator inhibitor-1 (PAI-1) induced the formation of CAMs, after which CAMs increasingly secreted the oncogenic factors interleukin-8 (IL-8) and C-X-C motif chemokine ligand 5 (CXCL5), further promoting the metastasis of ovarian cancer cells in a feedback loop. After the formation of CAMs, PAI-1 activated the nuclear factor kappa B (NFκB) pathway in the CAMs, thus transcriptionally upregulating the expression of the downstream NFκB targets IL-8 and CXCL5. Moreover, PAI-1 correlated with peritoneal metastasis in ovarian cancer patients and indicated a poor prognosis. In both ex vivo and in vivo models, after PAI-1 expression was knocked down, the metastasis of ovarian cancer cells decreased significantly. Therefore, targeting PAI-1 may provide a potential target for future therapeutics to prevent the formation of CAMs and alleviate peritoneal metastasis in ovarian cancer patients.
Collapse
Affiliation(s)
- Yang Peng
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan.
| | - Hong Yuan
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan
| | - Kae Nakamura
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan
| | - Masato Yoshihara
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan
| | - Akira Yokoi
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan
| | - Kayo Fujikake
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan
| | - Hiroaki Yasui
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan
| | - Nobuhisa Yoshikawa
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan
| | - Shiro Suzuki
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan
| | - Takeshi Senga
- Department of Internal Medicine, Yahagigawa Hospital, Anjyo, 444-1164, Aichi, Japan
| | - Kiyosumi Shibata
- Department of Obstetrics and Gynecology, Banbuntane Hotokukai Hospital, Fujita Health University, Nakagawa-ku, Nagoya, 454-8509, Aichi, Japan
| | - Fumitaka Kikkawa
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Showa-ku, Nagoya, 466-8550, Japan
| |
Collapse
|
9
|
Abstract
PURPOSE OF REVIEW Epigenetics refers to processes that alter gene expression without altering primary DNA. Over that past decade, there is a growing focus on epigenetic mechanisms in cancer research and its importance in cancer biology. This review summarizes epigenetic dysregulation in bladder cancer. RECENT FINDINGS Epigenetic alterations are overall shared across various grades and stages of bladder cancer. High grade invasive tumors demonstrate a greater degree and intensity of methylation and may have a unique methylation pattern. Environmental exposures may influence epigenetic alterations directly independent of genomic change. Non-coding RNAs play an important role in cancer phenotype, especially in the context of integrative genomic analyses. DNA hypermethylation and non-coding RNAs have potential as robust bladder cancer biomarkers; however, they require further study and validation. Changes in chromatin and histone modification are attractive targets for therapy and are currently in clinical trials. Epigenetic dysregulation may be an important key in improving the understanding of bladder cancer pathogenesis, especially through integrative genomic analyses. Deeper understanding of these pathways can help identify clinically relevant biomarkers and therapeutic targets to validate for diagnosis, monitoring, prognosis, and treatment for bladder cancer.
Collapse
Affiliation(s)
- Sima P Porten
- Department of Urology, University of California San Francisco (UCSF), Mailbox Code 1695, 550 16th Street, 6th Floor, San Francisco, CA, 94143, USA.
| |
Collapse
|
10
|
Garczyk S, Schneider U, Lurje I, Becker K, Vögeli TA, Gaisa NT, Knüchel R. ARID1A-deficiency in urothelial bladder cancer: No predictive biomarker for EZH2-inhibitor treatment response? PLoS One 2018; 13:e0202965. [PMID: 30138427 PMCID: PMC6107234 DOI: 10.1371/journal.pone.0202965] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 08/13/2018] [Indexed: 01/21/2023] Open
Abstract
Bladder cancer therapy relies on aggressive treatments highlighting the need for new, targeted therapies with reduced side effects. SWI/SNF complexes are mutated in ~20% across human cancers and dependency of SWI/SNF-deficient tumors on EZH2 has been uncovered recently. To systematically dissect the frequency of genetic alterations in SWI/SNF complexes potentially contributing to their inactivation, mutations and copy number variations in 25 SWI/SNF subunit genes were analyzed making use of publicly available sequencing data for 408 muscle-invasive bladder carcinoma samples. ARID1A truncating mutations were identified as the by far most common alterations of SWI/SNF complexes in urothelial bladder cancer. As current ARID1A protein expression data in bladder cancer are inconsistent and incomplete we examined if the frequency of truncating ARID1A mutations translates into a similar frequency of cases showing ARID1A protein loss. We applied a validated ARID1A antibody conducting a comprehensive immunohistochemistry-based expression analysis in urothelial bladder cancer (n = 362) including carcinoma in situ (CIS) cases. While observing increased median ARID1A protein levels in all carcinoma subgroups compared to normal urothelial controls (n = 21), the percentage of cases showing ARID1A protein loss was positively correlated with increasing stage and grade culminating in a rate of 14.1% in muscle-invasive disease. ARID1A-depletion did neither increase EZH2 protein or trimethylated H3K27 levels in vitro nor did ARID1A expression correlate with EZH2 or H3K27me3 amounts in human bladder carcinomas. Importantly, ARID1A-deficiency was neither associated with enhanced sensitivity towards inhibition of EZH2 enzymatic activity nor depletion of EZH2 protein. In summary, ARID1A truncating mutations, potentially translating into ARID1A protein loss in a subset of high-grade bladder cancers, are the most common SWI/SNF genetic alterations in bladder cancer. Our data do not support ARID1A-deficiency as predictive biomarker for EZH2-inhibitor treatment response in bladder cancer underlining the need for future bladder cancer-specific, drug screens for successfull discovery of ARID1A-deficiency-based targeted drugs.
Collapse
Affiliation(s)
- Stefan Garczyk
- Uropathology Group, Institute of Pathology, University Hospital RWTH Aachen, Aachen, Germany
- * E-mail:
| | - Ursula Schneider
- Uropathology Group, Institute of Pathology, University Hospital RWTH Aachen, Aachen, Germany
| | - Isabella Lurje
- Uropathology Group, Institute of Pathology, University Hospital RWTH Aachen, Aachen, Germany
| | - Katharina Becker
- Uropathology Group, Institute of Pathology, University Hospital RWTH Aachen, Aachen, Germany
| | - Thomas A. Vögeli
- Department of Urology, University Hospital RWTH Aachen, Aachen, Germany
| | - Nadine T. Gaisa
- Uropathology Group, Institute of Pathology, University Hospital RWTH Aachen, Aachen, Germany
| | - Ruth Knüchel
- Uropathology Group, Institute of Pathology, University Hospital RWTH Aachen, Aachen, Germany
| |
Collapse
|
11
|
Shahid M, Gull N, Yeon A, Cho E, Bae J, Yoon HS, You S, Yoon H, Kim M, Berman BP, Kim J. Alpha-oxoglutarate inhibits the proliferation of immortalized normal bladder epithelial cells via an epigenetic switch involving ARID1A. Sci Rep 2018. [PMID: 29540744 PMCID: PMC5852004 DOI: 10.1038/s41598-018-22771-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Interstitial cystitis (IC) is a chronic urinary tract disease that is characterized by unpleasant sensations, such as persistent pelvic pain, in the absence of infection or other identifiable causes. We previously performed comprehensive metabolomics profiling of urine samples from IC patients using nuclear magnetic resonance and gas-chromatography/mass spectrometry and found that urinary α-oxoglutarate (α-OG), was significantly elevated. α-OG, a tricarboxylic acid (TCA) cycle intermediate, reportedly functions to suppress the proliferation of immortalized normal human bladder epithelial cells. Here, we identified AT-rich interactive domain 1 A (ARID1A), a key chromatin remodeler, as being hypomethylated and upregulated by α-OG treatment. This was done through EPIC DNA methylation profiling and subsequent biochemical approaches, including quantitative RT-PCR and western blot analyses. Furthermore, we found that α-OG almost completely suppresses ten-eleven translocation (TET) activity, but does not affect DNA methyltransferase (DNMT) activity. Altogether, our studies reveal the potential role of α-OG in epigenetic remodeling through its effects on ARID1A and TET expression in the bladder. This may provide a new possible therapeutic strategy in treating IC.
Collapse
Affiliation(s)
- Muhammad Shahid
- Departments of Surgery and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Nicole Gull
- Center for Bioinformatics and Functional Genomics, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Austin Yeon
- Center for Bioinformatics and Functional Genomics, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Eunho Cho
- University of California Los Angeles, Los Angeles, CA, USA
| | - Jooeun Bae
- University of California Los Angeles, Los Angeles, CA, USA
| | - Hyun Seok Yoon
- Department of Urology, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Sungyong You
- Departments of Surgery and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Hana Yoon
- Department of Urology, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Minjung Kim
- Department of Molecular Oncology, Moffitt Cancer Center, Tampa, Florida, USA
| | - Benjamin P Berman
- Center for Bioinformatics and Functional Genomics, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Jayoung Kim
- Departments of Surgery and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA. .,University of California Los Angeles, Los Angeles, CA, USA. .,Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA. .,Department of Urology, Ga Cheon University College of Medicine, Incheon, Republic of Korea.
| |
Collapse
|
12
|
Savas S, Skardasi G. The SWI/SNF complex subunit genes: Their functions, variations, and links to risk and survival outcomes in human cancers. Crit Rev Oncol Hematol 2018; 123:114-131. [PMID: 29482773 DOI: 10.1016/j.critrevonc.2018.01.009] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 11/24/2017] [Accepted: 01/17/2018] [Indexed: 02/06/2023] Open
Abstract
SWI/SNF is a multiprotein complex essential for regulation of eukaryotic gene expression. In this article, we review the function and characteristics of this complex and its subunits in cancer-related phenotypes. We also present and discuss the publically available survival analysis data for TCGA patient cohorts, revealing novel relationships between the expression levels of the SWI/SNF subunit genes and patient survival times in several cancers. Overall, multiple lines of research point to a wide-spread role for the SWI/SNF complex genes in human cancer susceptibility and patient survival times. Examples include the mutations in ARID1A with cancer-driving effects, associations of tumor SWI/SNF gene expression levels and patient survival times, and two BRM promoter region polymorphisms linked to risk or patient outcomes in multiple human cancers. These findings should motivate comprehensive studies in order to fully dissect these relationships and verify the potential clinical utility of the SWI/SNF genes in controlling cancer.
Collapse
Affiliation(s)
- Sevtap Savas
- Discipline of Genetics, Faculty of Medicine, Memorial University, St. John's, NL, Canada; Discipline of Oncology, Faculty of Medicine, Memorial University, St. John's, NL, Canada.
| | - Georgia Skardasi
- Discipline of Genetics, Faculty of Medicine, Memorial University, St. John's, NL, Canada
| |
Collapse
|
13
|
Cao R, Wang G, Qian K, Chen L, Ju L, Qian G, Wu CL, Dan HC, Jiang W, Wu M, Xiao Y, Wang X. TM4SF1 regulates apoptosis, cell cycle and ROS metabolism via the PPARγ-SIRT1 feedback loop in human bladder cancer cells. Cancer Lett 2017; 414:278-293. [PMID: 29175458 DOI: 10.1016/j.canlet.2017.11.015] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 11/10/2017] [Accepted: 11/13/2017] [Indexed: 01/05/2023]
Abstract
Transmembrane-4-L-Six-Family-1 (TM4SF1) is a member of the L6 family and functions as a signal transducer to regulate cell development, growth and motility. Here we show that TM4SF1 is strongly upregulated in human muscle invasive bladder cancer (MIBC) tissues, corroborating the bioinformatical results of transcriptome analysis. Moreover, tissue microarray (TMA) shows significant correlations (p < 0.05) between high expression of TM4SF1 and T stage, TNM stage, lymph node metastasis status and survival rate of MIBC patients, indicating a positive association between TM4SF1 expression and poorer prognosis. Furthermore, in vitro and in vivo studies indicate that the proliferation of human bladder cancer (BCa) cells is significantly suppressed by knockdown of TM4SF1 (p < 0.05). Functionally, the reduction of TM4SF1 could induce cell cycle arrest and apoptosis possibly via the upregulation of reactive oxygen species (ROS) in BCa cells. In addition, these observations could be recovered by treatment with GW9662 (antagonist of PPARγ) and resveratrol (activator of SIRT1). Taken together, our results suggest that high expression of TM4SF1 predicts poor prognosis of MIBC.
Collapse
Affiliation(s)
- Rui Cao
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Gang Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Kaiyu Qian
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China; Department of Urology, The Fifth Hospital of Wuhan, Wuhan, China
| | - Liang Chen
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Lingao Ju
- College of Life Science, Wuhan University, Wuhan, China
| | - Guofeng Qian
- Department of Endocrinology, The First Affiliated Hospital of Zhejiang University, Hangzhou, China
| | - Chin-Lee Wu
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Han C Dan
- Greenebaum Cancer Center, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - Wei Jiang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China; Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Min Wu
- College of Life Science, Wuhan University, Wuhan, China
| | - Yu Xiao
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China; Laboratory of Precision Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China; Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.
| | - Xinghuan Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.
| |
Collapse
|
14
|
Casadevall D, Kilian AY, Bellmunt J. The prognostic role of epigenetic dysregulation in bladder cancer: A systematic review. Cancer Treat Rev 2017; 61:82-93. [PMID: 29121502 DOI: 10.1016/j.ctrv.2017.10.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 10/14/2017] [Accepted: 10/16/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND Despite adequate treatment and follow-up, around one fifth of patients with localized bladder cancer will present with disease progression. Adequate prognostic biomarkers are lacking to define patients who are at risk. Mutations in chromatin remodeling genes are more frequently found in bladder cancer than in any other solid tumor. However, the prognostic relevance of epigenetic dysregulation has not been established and may offer an opportunity for biomarker discovery. METHODS Looking for prognostic epigenetic factors, we performed a comprehensive PubMed search using keywords such as "bladder cancer", "chromatin remodeling", "gene methylation" and "epigenetics". We only included studies reporting on the association of epigenetic markers with prognostic outcomes such as recurrence, progression or survival. RESULTS Of 1113 results, 87 studies met the inclusion criteria, which represented a total of 85 epigenetic markers with potential prognostic relevance. No prospective studies were identified. Seventy-three percent (64/87) of the studies involved mixed cohorts of muscle invasive and non-muscle invasive bladder cancer. Promoter methylation of genes with putative prognostic value affected cellular processes such as cell cycle, apoptosis, cell-adhesion or migration, as well as critical pathways such as MAP-kinase or Wnt. Alteration of chromatin regulatory elements suggest a prognostic relevance alterations leading to a predominantly silenced chromatin state. CONCLUSIONS The prognostic impact of epigenetic alterations in bladder cancer is still unclear. Prospective evaluation of methylation marks and chromatin remodeling gene alterations using consistent methods and criteria is warranted.
Collapse
Affiliation(s)
- David Casadevall
- Cancer Research Program, PSMAR-IMIM (Hospital del Mar Medical Research Institute), Carrer Dr. Aiguader 88, 08003 Barcelona, Spain.
| | | | - Joaquim Bellmunt
- Cancer Research Program, PSMAR-IMIM (Hospital del Mar Medical Research Institute), Carrer Dr. Aiguader 88, 08003 Barcelona, Spain; Dana-Farber Cancer Institute, 450 Brookline Ave, DANA 1230, Boston, MA 02215, USA.
| |
Collapse
|
15
|
Luchini C, Veronese N, Solmi M, Cho H, Kim JH, Chou A, Gill AJ, Faraj SF, Chaux A, Netto GJ, Nakayama K, Kyo S, Lee SY, Kim DW, Yousef GM, Scorilas A, Nelson GS, Köbel M, Kalloger SE, Schaeffer DF, Yan HB, Liu F, Yokoyama Y, Zhang X, Pang D, Lichner Z, Sergi G, Manzato E, Capelli P, Wood LD, Scarpa A, Correll CU. Prognostic role and implications of mutation status of tumor suppressor gene ARID1A in cancer: a systematic review and meta-analysis. Oncotarget 2016; 6:39088-97. [PMID: 26384299 PMCID: PMC4770758 DOI: 10.18632/oncotarget.5142] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 08/27/2015] [Indexed: 12/17/2022] Open
Abstract
Loss of the tumor suppressor gene AT-rich interactive domain-containing protein 1A (ARID1A) has been demonstrated in several cancers, but its prognostic role is unknown. We aimed to investigate the risk associated with loss of ARID1A (ARID1A−) for all-cause mortality, cancer-specific mortality and recurrence of disease in subjects with cancer. PubMed and SCOPUS search from database inception until 01/31/2015 without language restriction was conducted, contacting authors for unpublished data. Eligible were prospective studies reporting data on prognostic parameters in subjects with cancer, comparing participants with presence of ARID1A (ARID1A+) vs. ARID1A−, assessed either via immunohistochemistry (loss of expression) or with genetic testing (presence of mutation). Data were summarized using risk ratios (RR) for number of deaths/recurrences and hazard ratios (HR) for time-dependent risk related to ARID1A− adjusted for potential confounders. Of 136 hits, 25 studies with 5,651 participants (28 cohorts; ARID1A−: n = 1,701; ARID1A+: n = 3,950), with a mean follow-up period of 4.7 ± 1.8 years, were meta-analyzed. Compared to ARID1A+, ARID1A− significantly increased cancer-specific mortality (studies = 3; RR = 1.55, 95% confidence interval (CI) = 1.19–2.00, I2 = 31%). Using HRs adjusted for potential confounders, ARID1A− was associated with a greater risk of cancer-specific mortality (studies = 2; HR = 2.55, 95%CI = 1.19–5.45, I2 = 19%) and cancer recurrence (studies = 10; HR = 1.93, 95%CI = 1.22–3.05, I2 = 76%). On the basis of these results, we have demonstrated that loss of ARID1A shortened time to cancer-specific mortality, and to recurrence of cancer when adjusting for potential confounders. For its role, this gene should be considered as an important potential target for personalized medicine in cancer treatment.
Collapse
Affiliation(s)
- Claudio Luchini
- Department of Pathology and Diagnostics, University and Hospital Trust of Verona, Verona, Italy.,Department of Pathology, The Johns Hopkins University, Baltimore, MD, USA
| | - Nicola Veronese
- Department of Medicine, Geriatrics Division, University of Padova, Padova, Italy
| | - Marco Solmi
- Department of Neurosciences, University of Padova, Padova, Italy
| | - Hanbyoul Cho
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Jae-Hoon Kim
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Angela Chou
- Cancer Diagnosis and Pathology Group, Kolling Institute of Medical Research, St. Leonards, Australia.,Sydney Vital Translational Research Centre St. Leonards, Australia.,University of Sydney, Sydney, NSW, Australia.,Department of Anatomical Pathology, SYDPATH St. Vincent's Hospital, Sydney, NSW, Australia
| | - Anthony J Gill
- Cancer Diagnosis and Pathology Group, Kolling Institute of Medical Research, St. Leonards, Australia.,Sydney Vital Translational Research Centre St. Leonards, Australia.,University of Sydney, Sydney, NSW, Australia
| | - Sheila F Faraj
- Department of Pathology, The Johns Hopkins University, Baltimore, MD, USA
| | - Alcides Chaux
- Department of Pathology, The Johns Hopkins University, Baltimore, MD, USA.,Centro para el Desarrollo de la Investigación Científica (CEDIC), Asunción, Paraguay
| | - George J Netto
- Department of Pathology, The Johns Hopkins University, Baltimore, MD, USA
| | - Kentaro Nakayama
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Shimane, Japan
| | - Satoru Kyo
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Shimane, Japan
| | - Soo Young Lee
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, South Korea
| | - Duck-Woo Kim
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - George M Yousef
- Department of Laboratory Medicine and Keenan Research Centre, Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Andreas Scorilas
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Athens, Athens, Greece
| | - Gregg S Nelson
- Department of Gynecologic Oncology, Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Martin Köbel
- Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Steve E Kalloger
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - David F Schaeffer
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Hai-Bo Yan
- Department of Systems Biology for Medicine of School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Feng Liu
- Department of Systems Biology for Medicine of School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Yoshihito Yokoyama
- Department of Obstetrics and Gynecology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Xianyu Zhang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Da Pang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Zsuzsanna Lichner
- Department of Laboratory Medicine and Keenan Research Centre, Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Giuseppe Sergi
- Department of Medicine, Geriatrics Division, University of Padova, Padova, Italy
| | - Enzo Manzato
- Department of Medicine, Geriatrics Division, University of Padova, Padova, Italy
| | - Paola Capelli
- Department of Pathology and Diagnostics, University and Hospital Trust of Verona, Verona, Italy
| | - Laura D Wood
- Department of Pathology, The Johns Hopkins University, Baltimore, MD, USA
| | - Aldo Scarpa
- Department of Pathology and Diagnostics, University and Hospital Trust of Verona, Verona, Italy
| | - Christoph U Correll
- The Zucker Hillside Hospital, Psychiatry Research, North Shore - Long Island Jewish Health System, Glen Oaks, New York, USA.,Hofstra North Shore LIJ School of Medicine, Hempstead, New York, USA.,The Feinstein Institute for Medical Research, Manhasset, New York, USA.,Albert Einstein College of Medicine, Bronx, New York, USA
| |
Collapse
|
16
|
ARID1A alteration in aggressive urothelial carcinoma and variants of urothelial carcinoma. Hum Pathol 2016; 55:17-23. [DOI: 10.1016/j.humpath.2016.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/31/2016] [Accepted: 04/15/2016] [Indexed: 01/12/2023]
|
17
|
Agaimy A, Bertz S, Cheng L, Hes O, Junker K, Keck B, Lopez-Beltran A, Stöckle M, Wullich B, Hartmann A. Loss of expression of the SWI/SNF complex is a frequent event in undifferentiated/dedifferentiated urothelial carcinoma of the urinary tract. Virchows Arch 2016; 469:321-30. [DOI: 10.1007/s00428-016-1977-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 04/27/2016] [Accepted: 06/14/2016] [Indexed: 01/01/2023]
|
18
|
Takeda T, Banno K, Okawa R, Yanokura M, Iijima M, Irie-Kunitomi H, Nakamura K, Iida M, Adachi M, Umene K, Nogami Y, Masuda K, Kobayashi Y, Tominaga E, Aoki D. ARID1A gene mutation in ovarian and endometrial cancers (Review). Oncol Rep 2015; 35:607-13. [PMID: 26572704 PMCID: PMC4689482 DOI: 10.3892/or.2015.4421] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Accepted: 10/13/2015] [Indexed: 12/12/2022] Open
Abstract
The AT-rich interacting domain-containing protein 1A gene (ARID1A) encodes ARID1A, a member of the SWI/SNF chromatin remodeling complex. Mutation of ARID1A induces changes in expression of multiple genes (CDKN1A, SMAD3, MLH1 and PIK3IP1) via chromatin remodeling dysfunction, contributes to carcinogenesis, and has been shown to cause transformation of cells in association with the PI3K/AKT pathway. Information on ARID1A has emerged from comprehensive genome-wide analyses with next-generation sequencers. ARID1A mutations have been found in various types of cancer and occur at high frequency in endometriosis-associated ovarian cancer, including clear cell adenocarcinoma and endometrioid adenocarcinoma, and also occur at endometrial cancer especially in endometrioid adenocarcinoma. It has also been suggested that ARID1A mutation occurs at the early stage of canceration from endometriosis to endometriosis-associated carcinoma in ovarian cancer and also from atypical endo-metrial hyperplasia to endometrioid adenocarcinoma in endometrial cancer. Therefore, development of a screening method that can detect mutations of ARID1A and activation of the PI3K/AKT pathway might enable early diagnosis of endometriosis-associated ovarian cancers and endometrial cancers. Important results may also emerge from a current clinical trial examining a multidrug regimen of temsirolimus, a small molecule inhibitor of the PI3K/AKT pathway, for treatment of advanced ovarian clear cell adenocarcinoma with ARID1A mutation and PI3K/AKT pathway activation. Also administration of sorafenib, a multikinase inhibitor, can inhibit cancer proliferation with PIK3CA mutation and resistance to mTOR inhibitors and GSK126, a molecular-targeted drug can inhibit proliferation of ARID1A-mutated ovarian clear cell adenocarcinoma cells by targeting and inhibiting EZH2. Further studies are needed to determine the mechanism of chromatin remodeling dysregulation initiated by ARID1A mutation, to develop methods for early diagnosis, to investigate new cancer therapy targeting ARID1A, and to examine the involvement of ARID1A mutations in development, survival and progression of cancer cells.
Collapse
Affiliation(s)
- Takashi Takeda
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Kouji Banno
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Ryuichiro Okawa
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Megumi Yanokura
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Moito Iijima
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Haruko Irie-Kunitomi
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Kanako Nakamura
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Miho Iida
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Masataka Adachi
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Kiyoko Umene
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Yuya Nogami
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Kenta Masuda
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Yusuke Kobayashi
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Eiichiro Tominaga
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| | - Daisuke Aoki
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160‑8582, Japan
| |
Collapse
|
19
|
Kim KJ, Jung HY, Oh MH, Cho H, Lee JH, Lee HJ, Jang SH, Lee MS. Loss of ARID1A Expression in Gastric Cancer: Correlation with Mismatch Repair Deficiency and Clinicopathologic Features. J Gastric Cancer 2015; 15:201-8. [PMID: 26468418 PMCID: PMC4604335 DOI: 10.5230/jgc.2015.15.3.201] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 09/14/2015] [Accepted: 09/14/2015] [Indexed: 01/28/2023] Open
Abstract
Purpose The AT-rich interactive domain 1A (ARID1A) gene encodes BRG1-associated factor 250a, a component of the SWItch/Sucrose NonFermentable chromatin remodeling complex, which is considered a tumor suppressor in many tumors. We aimed to investigate the prognostic significance of ARID1A expression in gastric cancers and explore its relationship with clinicopathologic parameters such as mismatch repair protein expression. Materials and Methods Four tissue microarrays were constructed from 191 resected specimens obtained at Soonchunhyang University Cheonan Hospital from 2006 to 2008. Nuclear expression of ARID1A was semiquantitatively assessed and binarized into retained and lost expression. Results Loss of ARID1A expression was observed in 62 cases (32.5%). This was associated with more frequent vascular invasion (P=0.019) and location in the upper third of the stomach (P=0.001), and trended toward more poorly differentiated subtypes (P=0.054). ARID1A loss was significantly associated with the mismatch repair-deficient phenotype (P=0.003). ARID1A loss showed a statistically significant correlation with loss of MLH1 (P=0.001) but not MSH2 expression (P=1.000). Kaplan-Meier survival analysis showed no statistically significant difference in overall survival; however, patients with retained ARID1A expression tended to have better overall survival than those with loss of ARID1A expression (P=0.053). In both mismatch repair-deficient and mismatch repair-proficient groups, survival analysis showed no differences related to ARID1A expression status. Conclusions Our results demonstrated that loss of ARID1A expression is closely associated with the mismatch repair-deficient phenotype, especially in sporadic microsatellite instability-high gastric cancers.
Collapse
Affiliation(s)
- Kyung-Ju Kim
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Hae Yoen Jung
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Mee-Hye Oh
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Hyundeuk Cho
- Department of Pathology, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Ji-Hye Lee
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Hyun Ju Lee
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Si-Hyong Jang
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Moon Soo Lee
- Department of General Surgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| |
Collapse
|
20
|
Karaarslan S, Yaman B, Ozturk H, Kumbaraci BS. Parafibromin Staining Characteristics in Urothelial Carcinomas and Relationship with Prognostic Parameters. J Pathol Transl Med 2015; 49:389-95. [PMID: 26395176 PMCID: PMC4579279 DOI: 10.4132/jptm.2015.08.10] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 08/05/2015] [Accepted: 08/10/2015] [Indexed: 01/01/2023] Open
Abstract
Background: Parafibromin is a recently defined tumor suppressor gene. The aim of our study was to determine the relationships of parafibromin expression in urothelial carcinomas (UCs) with prognostic parameters and to evaluate the use of parafibromin as a potential marker of UC. Methods: Parafibromin expression was assessed in 49 UC specimens using immunohistochemistry. The correlations between parafibromin expression and clinical and pathologic parameters were investigated. Results: Of the patients, 42 (85.7%) were male, and the mean age was 69.6 ± 8.2 years (range, 54 to 88 years). Morphologically, the UCs were divided into two groups: papillary (n = 27) and non-papillary (n = 22). There were seven low-grade (14.3%) and 42 high-grade (85.7%) tumors. Parafibromin was negative in 13 tumors (26.5%), partially positive in 19 tumors (38.8%), and positive in 17 tumors (34.7%). Parafibromin expression was more negative in UCs from upper urinary locations (n=17) and with muscularis propria invasion (n=28), which was statistically significant (p = .009 and p = .007, respectively). There was no statistically significant relationship between parafibromin expression and gender, age, tumor grade, survival, or disease-free survival. Conclusions: We found that UC cases with parafibromin positivity had less of a tendency to show muscularis propria invasion and were more commonly located in the lower urinary system. These results need to be confirmed with studies based on larger case series.
Collapse
Affiliation(s)
- Serap Karaarslan
- Department of Pathology, Sifa University Faculty of Medicine, Izmir, Turkey
| | - Banu Yaman
- Department of Pathology, Ege University Faculty of Medicine, Izmir, Turkey
| | - Hakan Ozturk
- Department of Urology, Sifa University Faculty of Medicine, Izmir, Turkey
| | | |
Collapse
|
21
|
Magiorkinis E, Diamantis A. The fascinating story of urine examination: From uroscopy to the era of microscopy and beyond. Diagn Cytopathol 2015; 43:1020-36. [DOI: 10.1002/dc.23370] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Revised: 06/27/2015] [Accepted: 09/02/2015] [Indexed: 12/26/2022]
|
22
|
Solakoglu Kahraman D, Diniz G, Sayhan S, Ayaz D, Uncel M, Karadeniz T, Akman T, Ozdemir A. Differences in the ARID-1 alpha expressions in squamous and adenosquamous carcinomas of uterine cervix. APMIS 2015; 123:847-50. [PMID: 26303865 DOI: 10.1111/apm.12435] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Accepted: 07/13/2015] [Indexed: 12/13/2022]
Abstract
AT-rich interactive domain 1A (ARID1A) is a tumor suppressor gene involved in chromatin remodeling which encodes ARID1A (BAF250a) protein. Recent studies have shown the loss of ARID1A expression in several types of tumors. This retrospective study was designed to evaluate the differences in tissue expressions of ARID1A in a spectrum of cervical neoplasms. Cervical intraepithelial neoplasms, invasive squamous or adenosquamous carcinomas were identified in 100 patients recently diagnosed as cervical neoplasms based on pathology databases. In this series, there were 29 low- and 29 high-grade cervical intraepithelial neoplasms, 27 squamous cell carcinomas, and 15 adenosquamous carcinomas. Mean age of the patients was 47.8 ± 13 years (20-80 years). It was determined that the expression of ARID1A was statistically significantly down-regulated in adenosquamous carcinomas when compared with non-invasive or invasive squamous cell carcinomas (p = 0.015). Lower levels of the ARID1A expression were detected in cases with adenosquamous carcinomas (60%), low- or high-grade squamous intraepithelial lesion (SIL) (31%), and squamous cell carcinomas (18.5%). Our findings have demonstrated the presence of a correlation between ARID1A expression and adenomatous differentiation of uterine squamous cell carcinomas. Therefore, ARID1A gene may suggestively have a role in the pathogenesis of cervical adenosquamous carcinomas.
Collapse
Affiliation(s)
| | - Gulden Diniz
- Pathology Laboratory, Tepecik Education and Research Hospital, Izmir, Turkey
| | - Sevil Sayhan
- Pathology Laboratory, Tepecik Education and Research Hospital, Izmir, Turkey
| | - Duygu Ayaz
- Pathology Laboratory, Tepecik Education and Research Hospital, Izmir, Turkey
| | - Melek Uncel
- Pathology Laboratory, Tepecik Education and Research Hospital, Izmir, Turkey
| | - Tugba Karadeniz
- Pathology Laboratory, Tepecik Education and Research Hospital, Izmir, Turkey
| | - Tulay Akman
- Medical Oncology Clinic, Tepecik Education and Research Hospital, Izmir, Turkey
| | - Aykut Ozdemir
- Gynecology and Obstetrics Clinic, Tepecik Education and Research Hospital, Izmir, Turkey
| |
Collapse
|
23
|
He YD, Luo ZH, Yang M, Ruan XX, Liu SY, Wu ZQ, Deng WM, Shao CK, Su ZL, He D, Gao X, Li LY. Prospective validation of DACH2 as a novel biomarker for prediction of metastasis and prognosis in muscle-invasive urothelial carcinoma of the bladder. Biochem Biophys Res Commun 2015; 459:416-23. [PMID: 25744029 DOI: 10.1016/j.bbrc.2015.02.119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 02/20/2015] [Indexed: 11/18/2022]
Abstract
Metastasis is the main cause of death from muscle-invasive urothelial carcinoma of the bladder (UCB), and the metastatic potential of tumors is often unpredictable. The role of Dachshund homolog 2 gene (DACH2) in tumorigenesis remains unexplored. We aimed to investigate whether DACH2 can be used as a biomarker to predict metastasis and prognosis of muscle-invasive UCB in a sequential training and validation fashion. For the training set (n = 40), compared with UCB patients without lymph node (LN) metastasis, both DACH2 protein and mRNA expression were greatly increased in case-matched patients with LN metastasis. For the independent validation set (n = 243), patients with primary UCB that did not express DACH2 had a longer metastasis-free survival (MFS) and overall survival (OS) than did those with tumors expressing DACH2 (5-year MFS: 88% [95% CI 80-96] versus 19% [95% CI 7-31], p < 0.001; 5-year OS: 93% [95% CI 87-99] versus 37% [95% CI 23-51], p < 0.001). Multivariable analysis of DACH2 status showed hazard ratios of 7.34 (95% CI 3.15-11.87, p < 0.001) for MFS and 3.96 (95% CI 2.04-7.16, p < 0.001) for OS which were much higher than hazard ratios associated with other independent risk factors. Collectively, DACH2 is an independent prognostic marker that can be used at initial diagnosis of UCB to identify patients who have a high potential to develop metastasis.
Collapse
Affiliation(s)
- Ya-Di He
- Center of Health Care, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Zi-Huan Luo
- Department of Urology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Ming Yang
- Department of Urology, Foshan Hospital of Traditional Medicine, Foshan, 528000, China
| | - Xing-Xing Ruan
- Department of Urology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Shao-Yuan Liu
- Department of Urology, Foshan First Municipal People's Hospital, Sun Yat-sen University, Foshan, 528000, China
| | - Zhen-Quan Wu
- Department of Urology, Foshan First Municipal People's Hospital, Sun Yat-sen University, Foshan, 528000, China
| | - Wei-Ming Deng
- Department of Urology, The First Affiliated Hospital, University of South China, Hengyang, 421000, China
| | - Chun-Kui Shao
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Zu-Lan Su
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Dan He
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Xin Gao
- Department of Urology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Liao-Yuan Li
- Department of Urology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China.
| |
Collapse
|
24
|
Chen X, Xie W, Gu P, Cai Q, Wang B, Xie Y, Dong W, He W, Zhong G, Lin T, Huang J. Upregulated WDR5 promotes proliferation, self-renewal and chemoresistance in bladder cancer via mediating H3K4 trimethylation. Sci Rep 2015; 5:8293. [PMID: 25656485 PMCID: PMC4319178 DOI: 10.1038/srep08293] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 01/15/2015] [Indexed: 12/31/2022] Open
Abstract
WD repeat domain 5 (WDR5) plays an important role in various biological functions through the epigenetic regulation of gene transcription; however, its role in bladder cancer remains largely unknown. Our study investigated the role of WDR5 in bladder cancer and demonstrated that WDR5 was upregulated in bladder cancer tissues, and elevated WDR5 protein levels positively correlated with advanced tumor stage and poor survival. Through gain or loss of function, we demonstrated that WDR5 promoted proliferation, self-renewal and chemoresistance to cisplatin in bladder cancer cells in vitro, and tumor growth in vivo. Mechanistically, WDR5 regulated various functions in bladder cancer by mediating the transcription of cyclin B1, cyclin E1, cyclin E2, UHMK1, MCL1, BIRC3 and Nanog by histone H3 lysine 4 trimethylation. Therefore, we have discovered that WDR5 plays an important role in bladder cancer suggesting that WDR5 is a potential biomarker and a promising target in the treatment of bladder cancer.
Collapse
Affiliation(s)
- Xu Chen
- 1] Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China [2] Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Weibin Xie
- 1] Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China [2] Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Peng Gu
- 1] Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China [2] Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Qingqing Cai
- Department of Internal Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Bo Wang
- 1] Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China [2] Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yun Xie
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wen Dong
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wang He
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Guangzheng Zhong
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Tianxin Lin
- 1] Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China [2] Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jian Huang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| |
Collapse
|