1
|
Slagter AE, Vollebergh MA, Caspers IA, van Sandick JW, Sikorska K, Lind P, Nordsmark M, Putter H, Braak JPBM, Meershoek-Klein Kranenbarg E, van de Velde CJH, Jansen EPM, Cats A, van Laarhoven HWM, van Grieken NCT, Verheij M. Prognostic value of tumor markers and ctDNA in patients with resectable gastric cancer receiving perioperative treatment: results from the CRITICS trial. Gastric Cancer 2022; 25:401-410. [PMID: 34714423 PMCID: PMC8882113 DOI: 10.1007/s10120-021-01258-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/13/2021] [Indexed: 02/07/2023]
Abstract
AIM To evaluate the prognostic value of tumor markers in a European cohort of patients with resectable gastric cancer. METHODS We performed a post hoc analysis of the CRITICS trial, in which 788 patients received perioperative therapy. Association between survival and pretreatment CEA, CA 19-9, alkaline phosphatase, neutrophils, hemoglobin and lactate dehydrogenase were explored in uni- and multivariable Cox regression analyses. Likelihoods to receive potentially curative surgery were investigated for patients without elevated tumor markers versus one of the tumor markers elevated versus both tumor markers elevated. The association between tumor markers and the presence of circulating tumor DNA (ctDNA) was explored in 50 patients with available ctDNA data. RESULTS In multivariable analysis, in which we corrected for allocated treatment and other baseline characteristics, elevated pretreatment CEA (HR 1.43; 95% CI 1.11-1.85, p < 0.001) and CA 19-9 (HR 1.79; 95% CI 1.42-2.25, p < 0.001) were associated with worse OS. Likelihoods to receive potentially curative surgery were 86%, 77% and 60% for patients without elevated tumor marker versus either elevated CEA or CA 19-9 versus both elevated, respectively (p < 0.001). Although both preoperative presence of ctDNA and tumor markers were prognostic for survival, no association was found between these two parameters. CONCLUSION CEA and CA 19-9 were independent prognostic factors for survival in a large cohort of European patients with resectable gastric cancer. No relationship was found between tumor markers and ctDNA. These factors could potentially guide treatment choices and should be included in future trials to determine their definitive position. TRIAL REGISTRATION ClinicalTrial.gov identifier: NCT00407186. EudraCT number: 2006-00413032.
Collapse
Affiliation(s)
- Astrid E. Slagter
- grid.430814.a0000 0001 0674 1393Department of Radiation Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Marieke A. Vollebergh
- grid.430814.a0000 0001 0674 1393Department of Gastrointestinal Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Irene A. Caspers
- grid.430814.a0000 0001 0674 1393Department of Gastrointestinal Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands ,grid.16872.3a0000 0004 0435 165XDepartment of Pathology, Amsterdam University Medical Centers, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Johanna W. van Sandick
- grid.430814.a0000 0001 0674 1393Department of Surgery, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Karolina Sikorska
- grid.430814.a0000 0001 0674 1393Department of Biometrics, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Pehr Lind
- grid.416648.90000 0000 8986 2221Department of Oncology, Stockholm Söder Hospital, Stockholm, Sweden ,grid.4714.60000 0004 1937 0626Karolinska Institutet, Stockholm, Sweden
| | - Marianne Nordsmark
- grid.7048.b0000 0001 1956 2722Department of Medical Oncology, Aarhus University, Aarhus, Denmark
| | - Hein Putter
- grid.10419.3d0000000089452978Department of Biometrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Jeffrey P. B. M. Braak
- grid.10419.3d0000000089452978Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Cornelis J. H. van de Velde
- grid.10419.3d0000000089452978Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Edwin P. M. Jansen
- grid.430814.a0000 0001 0674 1393Department of Radiation Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Annemieke Cats
- grid.430814.a0000 0001 0674 1393Department of Gastrointestinal Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Hanneke W. M. van Laarhoven
- grid.7177.60000000084992262Department of Medical Oncology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Nicole C. T. van Grieken
- grid.16872.3a0000 0004 0435 165XDepartment of Pathology, Amsterdam University Medical Centers, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Marcel Verheij
- grid.430814.a0000 0001 0674 1393Department of Radiation Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands ,grid.10417.330000 0004 0444 9382Department of Radiation Oncology, Radboud University Medical Center, Geert Grooteplein 32, 6500 HB Nijmegen, The Netherlands
| |
Collapse
|
2
|
Chou YH, Tantoh DM, Wu MC, Tyan YS, Chen PH, Nfor ON, Hsu SY, Shen CY, Huang CN, Liaw YP. PM 2.5 exposure and DLEC1 promoter methylation in Taiwan Biobank participants. Environ Health Prev Med 2020; 25:68. [PMID: 33153431 PMCID: PMC7646067 DOI: 10.1186/s12199-020-00909-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/25/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Particulate matter (PM) < 2.5 μm (PM2.5) or fine PM is a serious public health concern. It affects DNA methylation and heightens carcinogenesis. Deleted in lung and esophageal cancer 1 (DLEC1) is a tumor suppressor gene. However, aberrant methylation of the gene is associated with several cancers. We evaluated the association between PM2.5 and DLEC1 promoter methylation in Taiwanese adults based on regular outdoor exercise. METHODS We obtained DNA methylation and exercise data of 496 participants (aged between 30 and 70 years) from the Taiwan Biobank (TWB) database. We also extracted PM2.5 data from the Air Quality Monitoring Database (AQMD) and estimated participants' exposure using residential addresses. RESULTS DLEC1 methylation and PM2.5 were positively associated: beta coefficient (β) = 0.114 × 10-3; p value = 0.046. The test for interaction between exercise and PM2.5 on DLEC1 methylation was significant (p value = 0.036). After stratification by exercise habits, PM2.5 and DLEC1 methylation remained significantly associated only among those who exercised regularly (β = 0.237 × 10-3; p value = 0.007). PM2.5 quartile-stratified analyses revealed an inverse association between regular exercise and DLEC1 methylation at PM2.5 < 27.37 μg/m3 (β = - 5.280 × 10-3; p value = 0.009). After combining exercise habits and PM2.5 quartiles, one stratum (i.e., regular exercise and PM2.5 < 27.37 μg/m3) was inversely associated with DLEC1 methylation (β = -5.160 × 10-3, p value = 0.007). CONCLUSIONS We found significant positive associations between PM2.5 and DLEC1 promoter methylation. Regular exercise at PM2.5 < 27.37 μg/m3 seemingly regulated DLEC1 promoter methylation.
Collapse
Affiliation(s)
- Ying-Hsiang Chou
- Institute of Medicine, Chung Shan Medical University, Taichung City, 40201, Taiwan.,School of Medical Imaging and Radiological Sciences, Chung Shan Medical University, Taichung City, 40201, Taiwan.,Department of Radiation Oncology, Chung Shan Medical University Hospital, Taichung, 40201, Taiwan
| | - Disline Manli Tantoh
- Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Sec. 1 Jianguo N. Rd, Taichung City, 40201, Taiwan.,Department of Public Health and Institute of Public Health, Chung Shan Medical University, No. 110, Sec. 1 Jianguo N. Rd, Taichung City, 40201, Taiwan
| | - Ming-Chi Wu
- Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Sec. 1 Jianguo N. Rd, Taichung City, 40201, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung City, 40201, Taiwan.,School of Medical Informatics, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Yeu-Sheng Tyan
- School of Medical Imaging and Radiological Sciences, Chung Shan Medical University, Taichung City, 40201, Taiwan.,Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Sec. 1 Jianguo N. Rd, Taichung City, 40201, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Pei-Hsin Chen
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, No. 110, Sec. 1 Jianguo N. Rd, Taichung City, 40201, Taiwan
| | - Oswald Ndi Nfor
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, No. 110, Sec. 1 Jianguo N. Rd, Taichung City, 40201, Taiwan
| | - Shu-Yi Hsu
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, No. 110, Sec. 1 Jianguo N. Rd, Taichung City, 40201, Taiwan
| | - Chao-Yu Shen
- School of Medical Imaging and Radiological Sciences, Chung Shan Medical University, Taichung City, 40201, Taiwan. .,Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Sec. 1 Jianguo N. Rd, Taichung City, 40201, Taiwan. .,School of Medicine, Chung Shan Medical University, Taichung City, 40201, Taiwan.
| | - Chien-Ning Huang
- Institute of Medicine, Chung Shan Medical University, Taichung City, 40201, Taiwan. .,Department of Internal Medicine, Chung-Shan Medical University Hospital, Taichung City, 40201, Taiwan.
| | - Yung-Po Liaw
- Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Sec. 1 Jianguo N. Rd, Taichung City, 40201, Taiwan. .,Department of Public Health and Institute of Public Health, Chung Shan Medical University, No. 110, Sec. 1 Jianguo N. Rd, Taichung City, 40201, Taiwan. .,Medical Imaging and Big Data Center, Chung Shan Medical University Hospital, Taichung City, 40201, Taiwan.
| |
Collapse
|
3
|
Xie W, Zhou H, Han Q, Sun T, Nie C, Hong J, Wei R, Leonteva A, Han X, Wang J, Du X, Zhu L, Zhao Y, Tian W, Xue Y. Relationship between DLEC1 and PBX3 promoter methylation and the risk and prognosis of gastric cancer in peripheral blood leukocytes. J Cancer Res Clin Oncol 2020; 146:1115-1124. [PMID: 32144534 DOI: 10.1007/s00432-020-03171-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 02/27/2020] [Indexed: 01/09/2023]
Abstract
PURPOSE Aberrant DNA methylation could regulate the expression of tumor suppressor gene DLEC1 and oncogene PBX3 and was related to the occurrence and prognosis of gastric cancer (GC). In this study, the associations between DLEC1 and PBX3 promoter methylation in peripheral blood leukocytes (PBLs) and the risk and prognosis of GC were investigated. METHODS The methylation status of DLEC1 and PBX3 promoter in PBLs of 368 GC cases and 382 controls was detected by the methylation-sensitive high-resolution melting (MS-HRM) method. Logistic and Cox regression were adopted to analyze the associations of DLEC1 and PBX3 methylation with GC risk and prognosis, respectively. Confounding biases were controlled by propensity score (PS). RESULTS Compared with negative methylation (Nm), DLEC1-positive methylation (Pm) was associated with increased GC risk in PS (OR 2.083, 95% CI 1.220-3.558, P = 0.007), but PBX3 Pm was not associated with GC risk. In the elderly group (≥ 60 years), DLEC1 Pm was associated with increased GC risk (OR 2.951, 95% CI 1.426-6.104, P = 0.004). The combined effects between DLEC1 methylation and consumption of dairy products, fried food intake and Helicobacter pylori (H. pylori) infection on GC risk were discovered (ORc 3.461, 95% CI 1.847-6.486, P < 0.001, ORc 3.246, 95% CI 1.708-6.170, P < 0.001 and ORc 2.964, 95% CI 1.690-5.197, P < 0.001, respectively). Furthermore, DLEC1 and PBX3 methylation were not associated with GC prognosis. CONCLUSION DLEC1 methylation in PBLs and the combined effects of gene-environment can influence GC risk.
Collapse
Affiliation(s)
- Wenzhen Xie
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Haibo Zhou
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Qian Han
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Tong Sun
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Chuang Nie
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Jia Hong
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Rongrong Wei
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Anastasiia Leonteva
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Xu Han
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Jing Wang
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Xinyu Du
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Lin Zhu
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Yashuang Zhao
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China
| | - Wenjing Tian
- Department of Epidemiology, College of Public Health, Harbin Medical University, 197 Xuefu Road, Harbin, 150081, Heilongjiang, People's Republic of China.
| | - Yingwei Xue
- Department of Gastroenterological Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, Heilongjiang, People's Republic of China.
| |
Collapse
|
4
|
Qiu GH, Que W, Yan S, Zheng X, Xie X, Huang C, Yang X, Hooi SC. The pro-survival function of DLEC1 and its protection of cancer cells against 5-FU-induced apoptosis through up-regulation of BCL-XL. Cytotechnology 2019; 71:23-33. [PMID: 30607648 DOI: 10.1007/s10616-018-0258-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 09/15/2018] [Indexed: 02/06/2023] Open
Abstract
The tumor suppressor DLEC1 has been shown to promote cell proliferation when AP-2α2 is down-regulated in HCT116 stable clones, suggesting its pro-survival nature. However, the pro-survival function of DLEC1 has not been confirmed in other cells and its underlying mechanisms remain elusive. Therefore, we knocked down DLEC1 in a panel of cell lines and found that DLEC1 depletion caused various extents of cell death through intrinsic pathway. DLEC1 overexpression promoted cell survival and reduced cell death in cancer cells after 5-FU treatment, while DLEC1 down-regulation sensitized cancer cells to 5-FU. Further studies demonstrated that DLEC1 attenuated the increase in cleaved PARP, caspase-3 and caspase-7, the activity of caspase-9 and the diffusion of cytosolic cytochrome c from mitochondria. Our data also showed that BCL-XL was up-regulated by DLEC1 in stable clones after 5-FU treatment. Altogether, these results indicated that DLEC1 protects cells against cell death induced by 5-FU through the attenuation of active proteins in caspase cascade and the up-regulation of BCL-XL. Therefore, DLEC1 can be a pro-survival protein under certain circumstances and a potential therapeutic target for increasing sensitivity of cancer cells to 5-FU.
Collapse
Affiliation(s)
- Guo-Hua Qiu
- Fujian Provincial Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Longyan University, Longyan, 364012, Fujian, People's Republic of China.
- Key Laboratory of Preventive Veterinary Medicine and Biotechnology, Fujian Province Universities, Longyan University, Longyan, 364012, Fujian, People's Republic of China.
- College of Life Sciences, Longyan University, Longyan, 364012, Fujian, People's Republic of China.
- Department of Physiology, Faculty of Medicine, National University of Singapore, Singapore, 117597, Singapore.
| | - Wutang Que
- Orthopedics Department, Longyan First Hospital, Longyan, 364000, Fujian, People's Republic of China
| | - Shanying Yan
- Fujian Provincial Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Longyan University, Longyan, 364012, Fujian, People's Republic of China
- Key Laboratory of Preventive Veterinary Medicine and Biotechnology, Fujian Province Universities, Longyan University, Longyan, 364012, Fujian, People's Republic of China
- College of Life Sciences, Longyan University, Longyan, 364012, Fujian, People's Republic of China
| | - Xintian Zheng
- Fujian Provincial Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Longyan University, Longyan, 364012, Fujian, People's Republic of China
- Key Laboratory of Preventive Veterinary Medicine and Biotechnology, Fujian Province Universities, Longyan University, Longyan, 364012, Fujian, People's Republic of China
- College of Life Sciences, Longyan University, Longyan, 364012, Fujian, People's Republic of China
| | - Xiaojin Xie
- Department of Physiology, Faculty of Medicine, National University of Singapore, Singapore, 117597, Singapore
| | - Cuiqin Huang
- Fujian Provincial Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Longyan University, Longyan, 364012, Fujian, People's Republic of China
- Key Laboratory of Preventive Veterinary Medicine and Biotechnology, Fujian Province Universities, Longyan University, Longyan, 364012, Fujian, People's Republic of China
- College of Life Sciences, Longyan University, Longyan, 364012, Fujian, People's Republic of China
| | - Xiaoyan Yang
- Fujian Provincial Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Longyan University, Longyan, 364012, Fujian, People's Republic of China
- Key Laboratory of Preventive Veterinary Medicine and Biotechnology, Fujian Province Universities, Longyan University, Longyan, 364012, Fujian, People's Republic of China
- College of Life Sciences, Longyan University, Longyan, 364012, Fujian, People's Republic of China
| | - Shing Chuan Hooi
- Department of Physiology, Faculty of Medicine, National University of Singapore, Singapore, 117597, Singapore.
| |
Collapse
|
5
|
Vedeld HM, Goel A, Lind GE. Epigenetic biomarkers in gastrointestinal cancers: The current state and clinical perspectives. Semin Cancer Biol 2018; 51:36-49. [PMID: 29253542 PMCID: PMC7286571 DOI: 10.1016/j.semcancer.2017.12.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 11/17/2017] [Accepted: 12/12/2017] [Indexed: 02/07/2023]
Abstract
Each year, almost 4.1 million people are diagnosed with gastrointestinal (GI) cancers. Due to late detection of this disease, the mortality is high, causing approximately 3 million cancer-related deaths annually, worldwide. Although the incidence and survival differs according to organ site, earlier detection and improved prognostication have the potential to reduce overall mortality burden from these cancers. Epigenetic changes, including aberrant promoter DNA methylation, are common events in both cancer initiation and progression. Furthermore, such changes may be identified non-invasively with the use of PCR based methods, in bodily fluids of cancer patients. These features make aberrant DNA methylation a promising substrate for the development of disease biomarkers for early detection, prognosis and for predicting response to therapy. In this article, we will provide an update and current clinical perspectives for DNA methylation alterations in patients with colorectal, gastric, pancreatic, liver and esophageal cancers, and discuss their potential role as cancer biomarkers.
Collapse
Affiliation(s)
- Hege Marie Vedeld
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Norwegian Radium Hospital, Oslo, Norway; K.G. Jebsen Colorectal Cancer Research Centre, Oslo University Hospital, Oslo, Norway; Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, Oslo, Norway.
| | - Ajay Goel
- Center for Gastrointestinal Research, and Center for Translational Genomics and Oncology, Baylor Scott & White Research Institute and Charles A. Sammons Cancer Center, Baylor University Medical Center, Dallas, TX, USA.
| | - Guro E Lind
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Norwegian Radium Hospital, Oslo, Norway; K.G. Jebsen Colorectal Cancer Research Centre, Oslo University Hospital, Oslo, Norway; Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, Oslo, Norway.
| |
Collapse
|
6
|
Li L, Xu J, Qiu G, Ying J, Du Z, Xiang T, Wong KY, Srivastava G, Zhu XF, Mok TS, Chan ATC, Chan FKL, Ambinder RF, Tao Q. Epigenomic characterization of a p53-regulated 3p22.2 tumor suppressor that inhibits STAT3 phosphorylation via protein docking and is frequently methylated in esophageal and other carcinomas. Am J Cancer Res 2018; 8:61-77. [PMID: 29290793 PMCID: PMC5743460 DOI: 10.7150/thno.20893] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Accepted: 09/15/2017] [Indexed: 12/13/2022] Open
Abstract
Rationale: Oncogenic STAT3 signaling activation and 3p22-21.3 locus alteration are common in multiple tumors, especially carcinomas of the nasopharynx, esophagus and lung. Whether these two events are linked remains unclear. Our CpG methylome analysis identified a 3p22.2 gene, DLEC1, as a methylated target in esophageal squamous cell (ESCC), nasopharyngeal (NPC) and lung carcinomas. Thus, we further characterized its epigenetic abnormalities and functions. Methods: CpG methylomes were established by methylated DNA immunoprecipitation. Promoter methylation was analyzed by methylation-specific PCR and bisulfite genomic sequencing. DLEC1 expression and clinical significance were analyzed using TCGA database. DLEC1 functions were analyzed by transfections followed by various cell biology assays. Protein-protein interaction was assessed by docking, Western blot and immunoprecipitation analyses. Results: We defined the DLEC1 promoter within a CpG island and p53-regulated. DLEC1 was frequently downregulated in ESCC, lung and NPC cell lines and primary tumors, but was readily expressed in normal tissues and immortalized normal epithelial cells, with mutations rarely detected. DLEC1 methylation was frequently detected in ESCC tumors and correlated with lymph node metastasis, tumor recurrence and progression, with DLEC1 as the most frequently methylated among the established 3p22.2 tumor suppressors (RASSF1A, PLCD1 and ZMYND10/BLU). DLEC1 inhibits carcinoma cell growth through inducing cell cycle arrest and apoptosis, and also suppresses cell metastasis by reversing epithelial-mesenchymal transition (EMT) and cell stemness. Moreover, DLEC1 represses oncogenic signaling including JAK/STAT3, MAPK/ERK, Wnt/β-catenin and AKT pathways in multiple carcinoma types. Particularly, DLEC1 inhibits IL-6-induced STAT3 phosphorylation in a dose-dependent manner. DLEC1 contains three YXXQ motifs and forms a protein complex with STAT3 via protein docking, which blocks STAT3-JAK2 interaction and STAT3 phosphorylation. IL-6 stimulation enhances the binding of DLEC1 with STAT3, which diminishes their interaction with JAK2 and further leads to decreased STAT3 phosphorylation. The YXXQ motifs of DLEC1 are crucial for its inhibition of STAT3 phosphorylation, and disruption of these motifs restores STAT3 phosphorylation through abolishing DLEC1 binding to STAT3. Conclusions: Our study demonstrates, for the first time, predominant epigenetic silencing of DLEC1 in ESCC, and a novel mechanistic link of epigenetic DLEC1 disruption with oncogenic STAT3 signaling in multiple carcinomas.
Collapse
|
7
|
Wang Y, Fan C, Yu J, Wang X. APC methylation predicts biochemical recurrence of patients with prostate cancer: a meta-analysis. Int J Clin Exp Med 2015; 8:15575-15580. [PMID: 26629051 PMCID: PMC4658940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 09/07/2015] [Indexed: 06/05/2023]
Abstract
The promoter region of adenomatous polyposis coli (APC) has been found to be frequently methylated in prostate cancer. However, the prognostic role of APC methylation in prostate cancer was still debated. We performed a meta-analysis by searching PubMed and EMBASE databases. Pooled hazard ratios (HRs) and corresponding 95% confidence intervals (CI) were calculated. Seven studies (1227 patients) were included in this study. After calculation, the overall HR was 1.74 (95% CI: 1.31-2.31), implicating that APC methylation has an unfavorable impact on biochemical recurrence of prostate cancer. A subgroup analysis was performed with detection method, combined HR was 1.53 (95% CI: 1.19-1.96) for Methylation-Specific PCR (MSP), and 2.08 (95% CI: 1.18-3.64) for quantitative Methylation-Specific PCR (qMSP). Another subgroup analysis was conducted according to regions of the patients, combined HR was 2.02 (95% CI: 1.18-3.49) for North America, and 1.64 (95% CI: 1.14-2.36) for European. In conclusion, APC methylation is associated with biochemical recurrence of patients with prostate cancer.
Collapse
Affiliation(s)
- Yi Wang
- Department of Urology, The Suzhou Kowloon Hospital Affiliated to Shanghai Jiaotong University, Medical SchoolSuzhou 215021, Jiangsu Province, China
| | - Caibin Fan
- Department of Urology, Suzhou Hospital Affiliated to Nanjing Medical UniversitySuzhou 215002, Jiangsu Province, China
| | - Jiang Yu
- Department of Urology, The Suzhou Kowloon Hospital Affiliated to Shanghai Jiaotong University, Medical SchoolSuzhou 215021, Jiangsu Province, China
| | - Xizhi Wang
- Department of Urology, The Suzhou Kowloon Hospital Affiliated to Shanghai Jiaotong University, Medical SchoolSuzhou 215021, Jiangsu Province, China
| |
Collapse
|