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Liu A, Zhou K, Martínez MA, Lopez-Torres B, Martínez M, Martínez-Larrañaga MR, Wang X, Anadón A, Ares I. A "Janus" face of the RASSF4 signal in cell fate. J Cell Physiol 2021; 237:466-479. [PMID: 34553373 DOI: 10.1002/jcp.30592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 09/06/2021] [Accepted: 09/11/2021] [Indexed: 12/19/2022]
Abstract
RASSF4 (Ras-association domain family 4) is a protein-coding gene, regarded as a tumor suppressor regulated by DNA methylation. However, RASSF4 acts as a "Janus" in cell fate: death and survival. This review article focuses on the regulatory mechanisms of RASSF4 on cell death and cell survival and puts forward a comprehensive analysis of the relevant signaling pathways. The participation of RASSF4 in the regulation of intracellular store-operated Ca2+ entry also affects cell survival. Moreover, the mechanism of inducing abnormal expression of RASSF4 was summarized. We highlight recent advances in our knowledge of RASSF4 function in the development of cancer and other clinical diseases, which may provide insight into the controversial functions of RASSF4 and its potential application in disease therapy.
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Affiliation(s)
- Aimei Liu
- Department of National Reference, Laboratory of Veterinary Drug Residues (HZAU) and MOA Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, Hubei, China.,Department of MOA, Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Wuhan, Hubei, China
| | - Kaixiang Zhou
- Department of National Reference, Laboratory of Veterinary Drug Residues (HZAU) and MOA Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, Hubei, China.,Department of MOA, Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Wuhan, Hubei, China
| | - María Aránzazu Martínez
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid(UCM), and Research Institute Hospital 12 de October (i+12), Madrid, Spain
| | - Bernardo Lopez-Torres
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid(UCM), and Research Institute Hospital 12 de October (i+12), Madrid, Spain
| | - Marta Martínez
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid(UCM), and Research Institute Hospital 12 de October (i+12), Madrid, Spain
| | - María-Rosa Martínez-Larrañaga
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid(UCM), and Research Institute Hospital 12 de October (i+12), Madrid, Spain
| | - Xu Wang
- Department of National Reference, Laboratory of Veterinary Drug Residues (HZAU) and MOA Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, Hubei, China.,Department of MOA, Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Wuhan, Hubei, China
| | - Arturo Anadón
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid(UCM), and Research Institute Hospital 12 de October (i+12), Madrid, Spain
| | - Irma Ares
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid(UCM), and Research Institute Hospital 12 de October (i+12), Madrid, Spain
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2
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Ibrahim J, Op de Beeck K, Fransen E, Peeters M, Van Camp G. The Gasdermin E Gene Has Potential as a Pan-Cancer Biomarker, While Discriminating between Different Tumor Types. Cancers (Basel) 2019; 11:cancers11111810. [PMID: 31752152 PMCID: PMC6896019 DOI: 10.3390/cancers11111810] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/04/2019] [Accepted: 11/06/2019] [Indexed: 01/08/2023] Open
Abstract
Due to the elevated rates of incidence and mortality of cancer, early and accurate detection is crucial for achieving optimal treatment. Molecular biomarkers remain important screening and detection tools, especially in light of novel blood-based assays. DNA methylation in cancer has been linked to tumorigenesis, but its value as a biomarker has not been fully explored. In this study, we have investigated the methylation patterns of the Gasdermin E gene across 14 different tumor types using The Cancer Genome Atlas (TCGA) methylation data (N = 6502). We were able to identify six CpG sites that could effectively distinguish tumors from normal samples in a pan-cancer setting (AUC = 0.86). This combination of pan-cancer biomarkers was validated in six independent datasets (AUC = 0.84–0.97). Moreover, we tested 74,613 different combinations of six CpG probes, where we identified tumor-specific signatures that could differentiate one tumor type versus all the others (AUC = 0.79–0.98). In all, methylation patterns exhibited great variation between cancer and normal tissues, but were also tumor specific. Our analyses highlight that a Gasdermin E methylation biomarker assay, not only has the potential for being a methylation-specific pan-cancer detection marker, but it also possesses the capacity to discriminate between different types of tumors.
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Affiliation(s)
- Joe Ibrahim
- Centre of Medical Genetics, University of Antwerp and Antwerp University Hospital, Prins Boudewijnlaan 43, 2650 Edegem, Belgium; (J.I.); (K.O.d.B.); (E.F.)
- Centre for Oncological Research, University of Antwerp and Antwerp University Hospital, Wilrijkstraat 10, 2650 Edegem, Belgium;
| | - Ken Op de Beeck
- Centre of Medical Genetics, University of Antwerp and Antwerp University Hospital, Prins Boudewijnlaan 43, 2650 Edegem, Belgium; (J.I.); (K.O.d.B.); (E.F.)
- Centre for Oncological Research, University of Antwerp and Antwerp University Hospital, Wilrijkstraat 10, 2650 Edegem, Belgium;
| | - Erik Fransen
- Centre of Medical Genetics, University of Antwerp and Antwerp University Hospital, Prins Boudewijnlaan 43, 2650 Edegem, Belgium; (J.I.); (K.O.d.B.); (E.F.)
- StatUa Centre for Statistics, University of Antwerp, 2000 Antwerp, Belgium
| | - Marc Peeters
- Centre for Oncological Research, University of Antwerp and Antwerp University Hospital, Wilrijkstraat 10, 2650 Edegem, Belgium;
- Department of Medical Oncology, Antwerp University Hospital, Wilrijkstraat 10, 2650 Edegem, Belgium
| | - Guy Van Camp
- Centre of Medical Genetics, University of Antwerp and Antwerp University Hospital, Prins Boudewijnlaan 43, 2650 Edegem, Belgium; (J.I.); (K.O.d.B.); (E.F.)
- Centre for Oncological Research, University of Antwerp and Antwerp University Hospital, Wilrijkstraat 10, 2650 Edegem, Belgium;
- Correspondence: ; Tel.: +32-3275-9762
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3
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Tan S, Bian X, Wu B, Chen X. RASSF6 Is Downregulated In Human Bladder Cancers And Regulates Doxorubicin Sensitivity And Mitochondrial Membrane Potential Via The Hippo Signaling Pathway. Onco Targets Ther 2019; 12:9189-9200. [PMID: 31807003 PMCID: PMC6842287 DOI: 10.2147/ott.s217041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/25/2019] [Indexed: 12/19/2022] Open
Abstract
Background The present study aimed to investigate the clinicopathological significance and biological roles of RASSF6 in human bladder cancers. Materials and methods Immunohistochemistry and Western blots were used to examine the protein expression of RASSF6 in bladder cancer tissues. Biological roles of RASSF6 were examined using MTT, colony formation assay, Matrigel invasion assay, cell cycle analysis, AnnexinV/PI staining and JC-1 staining. Western blot analysis was used to examine the potential mechanism. Results We found that RASSF6 was downregulated in 73 of 138 bladder cancer specimens, which correlated with advanced stages. RASSF6 overexpression decreased the cell growth rate and inhibited invasion ability in T24 cell line. Downregulation of RASSF6 using siRNA increased the cell proliferation rate and promoted invasion in 5637 cell line. Cell cycle studies showed that RASSF6 overexpression suppressed the process of cell cycle progression. RASSF6 overexpression also increased the cellular response to doxorubicin (DOX) treatment. AnnexinV/PI staining showed that RASSF6 overexpression promoted DOX-induced apoptosis with increased cytochrome c and cleavage of caspase-3 and caspase-9. We also showed that RASSF6 overexpression downregulated the mitochondrial membrane potential, while RASSF6 depletion showed the opposite effect. Western blot analysis demonstrated that RASSF6 overexpression repressed p-Rb and Bcl-xL while upregulating p21 expression. In addition, we found that RASSF6 overexpression affected the Hippo signaling pathway by downregulating YAP. Depletion of YAP downregulated Bcl-xL expression and abolished the effect of RASSF6 on Bcl-xL. Depletion of YAP also upregulated the level of apoptosis and downregulated mitochondrial membrane potential. YAP siRNA abolished the effects of RASSF6 on DOX-induced apoptosis and loss of mitochondrial membrane potential. Conclusion Taken together, our results showed that RASSF6 was downregulated in bladder cancers. RASSF6 inhibited cell proliferation and invasion, as well as the progression of cancer, by regulating DOX sensitivity and mitochondrial membrane potential, possibly via the Hippo signaling pathway.
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Affiliation(s)
- Shutao Tan
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Xiaobo Bian
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Bin Wu
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Xiaonan Chen
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
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4
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Thakur GK, Sharma T, Krishna Latha T, Banerjee BD, Shah HK, Guleria K. High Resolution Based Quantitative Determination of Methylation Status of CDH1 and VIM Gene in Epithelial Ovarian Cancer. Asian Pac J Cancer Prev 2019; 20:2923-2928. [PMID: 31653136 PMCID: PMC6982649 DOI: 10.31557/apjcp.2019.20.10.2923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND DNA promoter methylation is widely explored epigenetic phenomena, known to effect gene expression and further perturbation in cellular homeostasis. Myriad of studies have leveraged promoter methylation and its potential as biomarker for various types of cancer. Aim of present study is to investigate promoter methylation of CDH1 and VIM gene and etiology of epithelial ovarian cancer (EOC). METHODS Most of previous studies were qualitative; we have quantitatively assessed methylation levels in 50 EOC cases and control each through high recognition melt (HRM) technique. RESULTS At 10 % cutoff for CDH1 94% of EOC cases were found to be methylated with mean methylation of 45±13.8, whereas for control mean methylation was found to be 7.3±3.7 amongst 16 % methylation positive control samples. For VIM methylation was detected in 96% of cases with mean of 50.44±11.7 in EOC and in 12% methylation positive samples for control mean methylation was 6.24±4.3. CONCLUSION In short HRM based DNA methylation can serve as a robust and sensitive diagnostic method for promoter methylation detection and as a biomarker for early epithelial ovarian cancer detection.
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Affiliation(s)
- Gaurav Kr Thakur
- Environmental and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences (Delhi University) and GTB Hospital, Dilshad Garden, Delhi, India
| | - Tusha Sharma
- Environmental and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences (Delhi University) and GTB Hospital, Dilshad Garden, Delhi, India
| | - T Krishna Latha
- Environmental and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences (Delhi University) and GTB Hospital, Dilshad Garden, Delhi, India
| | - B D Banerjee
- Environmental and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences (Delhi University) and GTB Hospital, Dilshad Garden, Delhi, India
| | - Harendra Kr Shah
- Environmental and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences (Delhi University) and GTB Hospital, Dilshad Garden, Delhi, India
| | - Kiran Guleria
- Department of Obst and Gynae, University College of Medical Sciences (Delhi University) and GTB Hospital, Dilshad Garden, Delhi, India
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5
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Xiu Y, Shao C, Zhu Y, Li Y, Gan T, Xu W, Piferrer F, Chen S. Differences in DNA Methylation Between Disease-Resistant and Disease-Susceptible Chinese Tongue Sole ( Cynoglossus semilaevis) Families. Front Genet 2019; 10:847. [PMID: 31572451 PMCID: PMC6753864 DOI: 10.3389/fgene.2019.00847] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 08/14/2019] [Indexed: 12/12/2022] Open
Abstract
DNA methylation, the most widely studied and most well-understood epigenetic modification, has been reported to play crucial roles in diverse processes. Although it has been found that DNA methylation can modulate the expression of immune-related genes in teleosts, a systemic analysis of epigenetic regulation on teleost immunity has rarely been performed. In this research, we employed whole-genome bisulfite sequencing to investigate the genome-wide DNA methylation profiles in select disease-resistant Cynoglossus semilaevis (DR-CS, family 14L006) and disease-susceptible C. semilaevis (DS-CS, family 14L104) against Vibrio harveyi infection. The results showed that following selective breeding, DR-CS had higher DNA methylation levels and different DNA methylation patterns, with 3,311 differentially methylated regions and 6,456 differentially methylated genes. Combining these data with the corresponding transcriptome data, we identified several immune-related genes that exhibited differential expression levels that were modulated by DNA methylation. Specifically, DNA methylation of tumor necrosis factor–like and lipopolysaccharide-binding protein-like was significantly correlated with their expression and significantly contributed to the disease resistance of the selected C. semilaevis family. In conclusion, we suggest that artificial selection for disease resistance in Chinese tongue sole causes changes in DNA methylation levels in important immune-related genes and that these epigenetic changes are potentially involved in multiple immune responses in Chinese tongue sole.
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Affiliation(s)
- Yunji Xiu
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, China
| | - Changwei Shao
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Ying Zhu
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yangzhen Li
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Tian Gan
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Wenteng Xu
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Francesc Piferrer
- Institut de Ciències del Mar (ICM), Spanish National Research Council (CSIC), Barcelona, Spain
| | - Songlin Chen
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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6
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Integrated analysis of promoter methylation and expression of telomere related genes in breast cancer. Oncotarget 2018; 8:25442-25454. [PMID: 28424414 PMCID: PMC5421942 DOI: 10.18632/oncotarget.16036] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 02/07/2017] [Indexed: 11/25/2022] Open
Abstract
Telomeres at the ends of eukaryotic chromosomes play a critical role in tumorgenesis. Using microfluidic PCR and next-generation bisulfite sequencing technology, we investigated the promoter methylation of 29 telomere related genes in paired tumor and normal tissues from 184 breast cancer patients. The expression of significantly differentially methylated genes was quantified using qPCR method.We observed that the average methylation level of the 29 telomere related genes was significant higher in tumor than that in normal tissues (P = 4.30E-21). A total of 4 genes (RAD50, RTEL, TERC and TRF1) showed significant hyper-methylation in breast tumor tissues. RAD51D showed significant methylation difference among the four breast cancer subtypes. The methylation of TERC showed significant association with ER status of breast cancer. The expression profiles of the 4 hyper-methylated genes showed significantly reduced expression in tumor tissues. The integration analysis of methylation and expression of these 4 genes showed a good performance in breast cancer prediction (AUC = 0.947).Our results revealed the methylation pattern of telomere related genes in breast cancer and suggested a novel 4-gene panel might be a valuable biomarker for breast cancer diagnosis.
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7
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Wei J, Li G, Zhang J, Zhou Y, Dang S, Chen H, Wu Q, Liu M. Integrated analysis of genome-wide DNA methylation and gene expression profiles identifies potential novel biomarkers of rectal cancer. Oncotarget 2018; 7:62547-62558. [PMID: 27566576 PMCID: PMC5308745 DOI: 10.18632/oncotarget.11534] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 08/08/2016] [Indexed: 12/18/2022] Open
Abstract
DNA methylation was regarded as the promising biomarker for rectal cancer diagnosis. However, the optimal methylation biomarkers with ideal diagnostic performance for rectal cancer are still limited. To identify new molecular markers for rectal cancer, we mapped DNA methylation and transcriptomic profiles in the six rectal cancer and paired normal samples. Further analysis revealed the hypermethylated probes in cancer prone to be located in gene promoter. Meanwhile, transcriptome analysis presented 773 low-expressed and 1,161 over-expressed genes in rectal cancer. Correction analysis identified a panel of 36 genes with an inverse correlation between methylation and gene expression levels, including 10 known colorectal cancer related genes. From the other 26 novel marker genes, GFRA1 and GSTM2 were selected for further analysis on the basis of their biological functions. Further experiment analysis confirmed their methylation and expression status in a larger number (44) of rectal cancer samples, and ROC curves showed higher AUC than SEPT9, which has been used as a biomarker in rectal cancer. Our data suggests that aberrant DNA methylation of contiguous CpG sites in methylation array may be potential diagnostic markers of rectal cancer.
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Affiliation(s)
- Jiufeng Wei
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China.,Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China
| | - Guodong Li
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China.,Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China
| | - Jinning Zhang
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China.,Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China
| | - Yuhui Zhou
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China.,Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China
| | - Shuwei Dang
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China.,Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China
| | - Hongsheng Chen
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China.,Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China
| | - Qiong Wu
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, P.R. China
| | - Ming Liu
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China.,Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China
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Ma J, Zhang S, Hu Y, Li X, Yuan F, Sun D, Wang L, Zhang F, Chen G, Cui P. Decreased expression of RASSF10 correlates with poor prognosis in patients with colorectal cancer. Medicine (Baltimore) 2017; 96:e7011. [PMID: 29049167 PMCID: PMC5662333 DOI: 10.1097/md.0000000000007011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Ras association domain protein 10 (RASSF10) was reported to act as a prognostic indicator in various types of cancer and it was proved to be tumor suppressor gene in colorectal cancer (CRC). The purpose of this study was to evaluate the prognostic significance of RASSF10 in CRC.Quantitative real-time polymerase chain reaction was used to detect the messenger RNA (mRNA) expression while enzyme-linked immunosorbent assay was taken to measure the protein expression of RASSF10 in tumor tissues and adjacent normal tissues from 102 patients with CRC. The relationship between RASSF10 expression level and clinical characteristics of CRC patients was analyzed by chi-squared test. In addition, the association between overall survival of CRC patients and RASSF10 expression was estimated by Kaplan-Meier analysis. Cox regression analysis was used to evaluate the prognostic value of RASSF10.The expression level of RASSF10 in tumor tissues was significantly lower than that in the normal tissues both at mRNA and protein levels. Moreover, the expression level was correlated with lymph-node-metastasis and tumor-node-metastasis stage. Kaplan-Meier analysis suggested that patients with high expression level of RASSF10 had a longer overall survival than those with low level (log-rank test, P < .001). Besides, RASSF10 might be a potential biomarker in the prognosis of CRC according to cox regression analysis.The down regulated of RASSF10 is found in CRC and it may be an ideal prognostic marker.
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9
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Promoter Hypermethylation Analysis of the Tumor Suppressor Genes RASSF1A and RASSF2A in Iranian Endometrial Carcinoma Patients. INTERNATIONAL JOURNAL OF CANCER MANAGEMENT 2017. [DOI: 10.5812/ijcm.8629] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Zhou Q, Song W, Xiao W. Dioscin induces demethylation of DAPK-1 and RASSF-1alpha genes via the antioxidant capacity, resulting in apoptosis of bladder cancer T24 cells. EXCLI JOURNAL 2017; 16:101-112. [PMID: 28435431 PMCID: PMC5379114 DOI: 10.17179/excli2016-571] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 01/12/2017] [Indexed: 12/28/2022]
Abstract
DNA methylation at CpG rich regions often occurs at tumor suppressor gene promoters, resulting in reduced gene expression and final carcinogenesis. Hypermethylation of tumor suppressor genes, including DAPK-1 and RASSF-1α genes, have been found in patients with bladder carcinoma (BC) in some western countries. Reactive oxygen species (ROS) was reported to play a causative role in gene hypermethylation. In this study, we detected the methylation status and expression of DAPK1 and RASSF-1α genes in tissue samples from Chinese BC patients, using methylation-specific PCR, reverse transcription PCR and western blotting. Further, we examined the ability of dioscin, a natural antioxidant, to regulate methylation status and expression of DAPK-1 and RASSF-1α genes in BC cell lines. In our results, DAPK-1 and RASSF-1α genes showed higher methylation level and lower express level in BC tissues than matched normal tissues. Treatment with dioscin decreased viability of BC 5637 and T24 cells, but not non-cancer bladder epithelial cell, SV-HUC-1. Dioscin triggered demethylation of DAPK1 and RASSF-1α genes in T24 cells and increased the gene and protein expression in 5637 and T24 cells. Both dioscin and substituted antioxidants (N-acetyl cysteine and Vitamin E) decreased intracellular ROS, but the effect of dioscin was abolished by adding H2O2. Similar to dioscin, the substituted antioxidants also induced the gene demethylation and T24 cell apoptosis. Co-treatment with dioscin and H2O2 had no such effects. Collectively, dioscin induces demethylation of DAPK-1 and RASSF-1α genes via the antioxidant capacity, resulting in apoptosis of bladder cancer T24 cells or inhibitory cell viability.
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Affiliation(s)
- Qiang Zhou
- Department of Urology, Hunan Provincial People's Hospital, 61#, West Jiefang Road, Changsha, Hunan, P.R. China
| | - Wie Song
- Department of Urology, Hunan Provincial People's Hospital, 61#, West Jiefang Road, Changsha, Hunan, P.R. China
| | - Wei Xiao
- Department of Urology, Hunan Provincial People's Hospital, 61#, West Jiefang Road, Changsha, Hunan, P.R. China
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11
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Yin F, Wang N, Wang S, Yu F, Sun X, Yu X, Luo B, Zhao C, Wang Y. HPV16 oncogenes E6 or/and E7 may influence the methylation status of RASSFIA gene promoter region in cervical cancer cell line HT-3. Oncol Rep 2017; 37:2324-2334. [PMID: 28260046 DOI: 10.3892/or.2017.5465] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 12/27/2016] [Indexed: 11/06/2022] Open
Abstract
Both human papillomavirus (HPV) infection and the aberrant Ras associated domain family gene 1A (RASSF1A) promoter methylation status participate in the pathogenesis of cervical cancer. Some studies suggest that E6, and E7 are involved in the pathogenetic mechanisms of RASSF1A. We mainly explored a possible involvement of HPV16 oncogenes E6 or/and E7 in RASSF1A promoter methylation status and possible roles of RASSF1A gene methylation in cervical cancer. Bisulfite genomic sequencing (BGS) PCR combined with TA clone, methylation-specific PCR (MSP) were used to analyze methylation status of the RASSF1A gene promoter in HPV16/18-positive and HPV-negative cervical cancer cell lines; ectopically expressed HPV16 E6, E7 and E6/E7 cervical cancer cell lines; normal cervical and cervical cancer tissues. The mRNA and protein expression of RASSF1A was detected by RT-PCR and western blotting. Re-expression and downregulated promoter methylation status were detected in the ectopically expressed HPV16 E6 and E7 cervical cancer cell line HT-3. The methylation status and expression of RASSF1A could be downregulated or reactivated by 5-Aza-dc in HT-3 and C33A cells. Additionally, statistics showed significant hypermethylation of RASSF1A in cervical cancer samples compared to that in normal cervical samples (P<0.05). The false negative rate (FNR) was 6.25% by HC2 method, when reconfirmed by HPV detection combining the MY09/11, GP5+/6+ and SPF1/2 methods. The ectopic expression of HPV16 E6 and/or E7 may be involved in aberrant methylation and expression of the RASSF1A gene. RASSF1A gene expression could be regulated by its promoter methylation status. Additionally, the false negativity of the HPV detection may contribute to the uncertain relationship between HPV infection and aberrant RASSF1A promoter methylation.
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Affiliation(s)
- Fufen Yin
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, P.R. China
| | - Ning Wang
- Department of Obstetrics and Gynecology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Shanshan Wang
- Department of Obstetrics and Gynecology, People's Hospital of Huangdao District, Qingdao, Shandong 266000, P.R. China
| | - Fengsheng Yu
- Department of Obstetrics and Gynecology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Xin Sun
- Department of Obstetrics and Gynecology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Xiao Yu
- Department of Obstetrics and Gynecology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Bing Luo
- Department of Medical Microbiology, Qingdao University Medical College, Qingdao, Shandong 266000, P.R. China
| | - Chengquan Zhao
- Department of Pathology, Magee-Womens Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA 15213-3180, USA
| | - Yankui Wang
- Department of Obstetrics and Gynecology, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
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12
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Zhan L, Zhang B, Tan Y, Yang C, Huang C, Wu Q, Zhang Y, Chen X, Zhou M, Shu A. Quantitative assessment of the relationship between RASSF1A gene promoter methylation and bladder cancer (PRISMA). Medicine (Baltimore) 2017; 96:e6097. [PMID: 28207521 PMCID: PMC5319510 DOI: 10.1097/md.0000000000006097] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Methylation of the Ras-association domain family 1 isoform A (RASSF1A) gene promoter region is thought to participate in the initiation and development of many different cancers. However, in bladder cancer the role of RASSF1A methylation was unclear. To evaluate the relationship between RASSF1A methylation and bladder cancer, a quantitative assessment of an independent meta-analysis was performed. In addition, a DNA methylation microarray database from the cancer genome atlas (TCGA) project was used to validate the results of the meta-analysis. METHODS We searched published articles from computerized databases, and DNA methylation data were extracted from TCGA project. All data were analyzed by R software. RESULTS The results of the meta-analysis indicated that the frequency of RASSF1A gene methylation in bladder cancer patients is significantly higher than in healthy controls. The hazard ratio (HR) was 2.24 (95% CI = [1.45; 3.48], P = 0.0003) for overall survival (OS), and the RASSF1A gene promoter methylation status was strongly associated with the TNM stage and differentiation grade of the tumor. The similar results were also found by the data from TCGA project. CONCLUSION There was a significant relationship between the methylation of the RASSF1A gene promoter and bladder cancer. Therefore, RASSF1A gene promoter methylation will be a potential biomarker for the clinical diagnosis of bladder cancer.
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Affiliation(s)
- Leyun Zhan
- Anesthesia department, People's Hospital of China Three Gorges University, The First People's Hospital of Yichang, Yichang, Hubei, P.R. China
| | - Bingyi Zhang
- Ultrasound department, People's Hospital of China Three Gorges University, The First People's Hospital of Yichang, Yichang, Hubei, P.R. China
| | - Yaojun Tan
- Anesthesia department, People's Hospital of China Three Gorges University, The First People's Hospital of Yichang, Yichang, Hubei, P.R. China
| | - Chengliang Yang
- Cardiothoracic surgery, People's Hospital of China Three Gorges University, The First People's Hospital of Yichang, Yichang, Hubei, P.R. China
| | - Chenhong Huang
- Anesthesia department, People's Hospital of China Three Gorges University, The First People's Hospital of Yichang, Yichang, Hubei, P.R. China
| | - Qiongya Wu
- Anesthesia department, People's Hospital of China Three Gorges University, The First People's Hospital of Yichang, Yichang, Hubei, P.R. China
| | - Yulin Zhang
- Department of science and education, People's Hospital of China Three Gorges University, The First People's Hospital of Yichang, Yichang, Hubei, P.R. China
| | - Xiaobo Chen
- Anesthesia department, People's Hospital of China Three Gorges University, The First People's Hospital of Yichang, Yichang, Hubei, P.R. China
| | - Mi Zhou
- Anesthesia department, People's Hospital of China Three Gorges University, The First People's Hospital of Yichang, Yichang, Hubei, P.R. China
| | - Aihua Shu
- Anesthesia department, People's Hospital of China Three Gorges University, The First People's Hospital of Yichang, Yichang, Hubei, P.R. China
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13
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Lim Y, Wan Y, Vagenas D, Ovchinnikov DA, Perry CFL, Davis MJ, Punyadeera C. Salivary DNA methylation panel to diagnose HPV-positive and HPV-negative head and neck cancers. BMC Cancer 2016; 16:749. [PMID: 27663357 PMCID: PMC5034533 DOI: 10.1186/s12885-016-2785-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 09/15/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Head and neck squamous cell carcinoma (HNSCC) is a heterogeneous group of tumours with a typical 5 year survival rate of <40 %. DNA methylation in tumour-suppressor genes often occurs at an early stage of tumorigenesis, hence DNA methylation can be used as an early tumour biomarker. Saliva is an ideal diagnostic medium to detect early HNSCC tumour activities due to its proximity to tumour site, non-invasiveness and ease of sampling. We test the hypothesis that the surveillance of DNA methylation in five tumour-suppressor genes (RASSF1α, p16 INK4a , TIMP3, PCQAP/MED15) will allow us to diagnose HNSCC patients from a normal healthy control group as well as to discriminate between Human Papillomavirus (HPV)-positive and HPV-negative patients. METHODS Methylation-specific PCR (MSP) was used to determine the methylation levels of RASSF1α, p16 INK4a , TIMP3 and PCQAP/MED15 in DNA isolated from saliva. Statistical analysis was carried out using non-parametric Mann-Whitney's U-test for individually methylated genes. A logistic regression analysis was carried out to determine the assay sensitivity when combing the five genes. Further, a five-fold cross-validation with a bootstrap procedure was carried out to determine how well the panel will perform in a real clinical scenario. RESULTS Salivary DNA methylation levels were not affected by age. Salivary DNA methylation levels for RASSF1α, p16 INK4a , TIMP3 and PCQAP/MED15 were higher in HPV-negative HNSCC patients (n = 88) compared with a normal healthy control group (n = 122) (sensitivity of 71 % and specificity of 80 %). Conversely, DNA methylation levels for these genes were lower in HPV-positive HNSCC patients (n = 45) compared with a normal healthy control group (sensitivity of 80 % and specificity of 74 %), consistent with the proposed aetiology of HPV-positive HNSCCs. CONCLUSIONS Salivary DNA tumour-suppressor methylation gene panel has the potential to detect early-stage tumours in HPV-negative HNSCC patients. HPV infection was found to deregulate the methylation levels in HPV-positive HNSCC patients. Large-scale double-blinded clinical trials are crucial before this panel can potentially be integrated into a clinical setting.
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Affiliation(s)
- Yenkai Lim
- The School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, GPO Box 2434, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD, 4059, Australia
| | - Yunxia Wan
- The School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, GPO Box 2434, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD, 4059, Australia
| | - Dimitrios Vagenas
- The School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, GPO Box 2434, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD, 4059, Australia
| | - Dmitry A Ovchinnikov
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia
| | - Chris F L Perry
- Department of Otolaryngology, Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Brisbane, QLD, 4102, Australia.,School of Medicine, University of Queensland, 288 Herston Road, Herston, Brisbane, QLD, 4006, Australia
| | - Melissa J Davis
- Department of Biomedical Engineering, University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia
| | - Chamindie Punyadeera
- The School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, GPO Box 2434, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD, 4059, Australia.
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14
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Prognostic Value of Gene Methylation and Clinical Factors in Non–Muscle-Invasive Upper Tract Urothelial Carcinoma After Radical Nephroureterectomy. Clin Genitourin Cancer 2016; 14:e371-8. [DOI: 10.1016/j.clgc.2016.02.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/27/2016] [Accepted: 02/14/2016] [Indexed: 01/13/2023]
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15
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Kawanaka M, Watari J, Kamiya N, Yamasaki T, Kondo T, Toyoshima F, Ikehara H, Tomita T, Oshima T, Fukui H, Daimon T, Das KM, Miwa H. Effects of Helicobacter pylori eradication on the development of metachronous gastric cancer after endoscopic treatment: analysis of molecular alterations by a randomised controlled trial. Br J Cancer 2016; 114:21-9. [PMID: 26671747 PMCID: PMC4716539 DOI: 10.1038/bjc.2015.418] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 09/19/2015] [Accepted: 11/04/2015] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Whether Helicobacter pylori eradication actually suppresses the development of metachronous gastric cancer (MGC) after endoscopic resection (ER) remains controversial. The aims of this study were to clarify (1) the molecular markers related to carcinogenesis in intestinal metaplasia (IM) by a cross-sectional study, and (2) the changes of those markers by an open-label, randomised controlled trial (RCT) of H. pylori treatment. METHODS First, we evaluated microsatellite instability (MSI), the methylation status at hMLH1, CDKN2A and APC genes, and immunoreactivity using the monoclonal antibody (mAb) Das-1 in IM in the background mucosa of 131 patients who underwent ER for gastric neoplasia and 22 chronic gastritis cases (control). Next, we performed an RCT to evaluate the changes of MSI between the H. pylori-eradicated (n=19) and non-eradicated patients (n=17) at 1 year among the H. pylori-positive patients. RESULTS Microsatellite instability and mAb Das-1 reactivity showed significantly higher incidences in both the H. pylori-positive and -negative patients compared with the control group, thus suggesting that MSI and mAb Das-1 reactivity are associated with gastric neoplasia (OR=5.06 for MSI; OR=2.51 for mAb Das-1 reactivity). The RCT showed that H. pylori eradication did not provide significant reversals of any molecular alterations including MSI (the primary end point) and other methylation statuses and mAb Das-1 reactivity (secondary end points). CONCLUSIONS H. pylori eradication did not produce significant changes in the molecular alterations related to carcinogenesis, suggesting that H. pylori treatment may not prevent the development of MGC in background mucosa with IM.
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Affiliation(s)
- Maki Kawanaka
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Jiro Watari
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Noriko Kamiya
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Takahisa Yamasaki
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Takashi Kondo
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Fumihiko Toyoshima
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Hisatomo Ikehara
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Toshihiko Tomita
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Tadayuki Oshima
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Hirokazu Fukui
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Takashi Daimon
- Department of Biostatistics, Hyogo College of Medicine, Nishinomiya, Japan
| | - Kiron M Das
- Division of Gastroenterology and Hepatology, Departments of Medicine and Pathology, Rutgers Robert Wood Johnson Medical School, 125 Paterson Street, MEB 478B, New Brunswick, NJ 08901, USA
| | - Hiroto Miwa
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
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16
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Perez-Janices N, Blanco-Luquin I, Torrea N, Liechtenstein T, Escors D, Cordoba A, Vicente-Garcia F, Jauregui I, De La Cruz S, Illarramendi JJ, Coca V, Berdasco M, Kochan G, Ibañez B, Lera JM, Guerrero-Setas D. Differential involvement of RASSF2 hypermethylation in breast cancer subtypes and their prognosis. Oncotarget 2015; 6:23944-58. [PMID: 26284587 PMCID: PMC4695163 DOI: 10.18632/oncotarget.4062] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 05/22/2015] [Indexed: 12/13/2022] Open
Abstract
Breast cancer is a heterogeneous disease that can be subdivided into clinical, histopathological and molecular subtypes (luminal A-like, luminal B-like/HER2-negative, luminal B-like/HER2-positive, HER2-positive, and triple-negative). The study of new molecular factors is essential to obtain further insights into the mechanisms involved in the tumorigenesis of each tumor subtype. RASSF2 is a gene that is hypermethylated in breast cancer and whose clinical value has not been previously studied. The hypermethylation of RASSF1 and RASSF2 genes was analyzed in 198 breast tumors of different subtypes. The effect of the demethylating agent 5-aza-2'-deoxycytidine in the re-expression of these genes was examined in triple-negative (BT-549), HER2 (SK-BR-3), and luminal cells (T-47D). Different patterns of RASSF2 expression for distinct tumor subtypes were detected by immunohistochemistry. RASSF2 hypermethylation was much more frequent in luminal subtypes than in non-luminal tumors (p = 0.001). The re-expression of this gene by lentiviral transduction contributed to the differential cell proliferation and response to antineoplastic drugs observed in luminal compared with triple-negative cell lines. RASSF2 hypermethylation is associated with better prognosis in multivariate statistical analysis (P = 0.039). In conclusion, RASSF2 gene is differently methylated in luminal and non-luminal tumors and is a promising suppressor gene with clinical involvement in breast cancer.
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Affiliation(s)
- Noemi Perez-Janices
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet (FMS), Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Navarra, Spain
- Division of Infection and Immunity, Rayne Institute, University College London (UCL), London, United Kingdom
| | - Idoia Blanco-Luquin
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet (FMS), Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Navarra, Spain
- Division of Infection and Immunity, Rayne Institute, University College London (UCL), London, United Kingdom
- Cancer Immunomodulation Group, Navarrabiomed-Fundacion Miguel Servet, IdiSNA, Navarra, Spain
| | - Natalia Torrea
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Edinburgh, United Kingdom
| | - Therese Liechtenstein
- Division of Infection and Immunity, Rayne Institute, University College London (UCL), London, United Kingdom
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Edinburgh, United Kingdom
| | - David Escors
- Division of Infection and Immunity, Rayne Institute, University College London (UCL), London, United Kingdom
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Edinburgh, United Kingdom
| | - Alicia Cordoba
- Department of Pathology, Complejo Hospitalario de Navarra, Navarra Health Service, Pamplona, Navarra, Spain
| | | | - Isabel Jauregui
- Department of Pathology, Complejo Hospitalario de Navarra, Navarra Health Service, Pamplona, Navarra, Spain
| | - Susana De La Cruz
- Department of Medical Oncology, Complejo Hospitalario de Navarra, Navarra Health Service, Navarra, Spain
| | - José Juan Illarramendi
- Department of Medical Oncology, Complejo Hospitalario de Navarra, Navarra Health Service, Navarra, Spain
| | - Valle Coca
- Biobank Unit, Navarrabiomed-Fundacion Miguel Servet, IdiSNA, Navarra, Spain
| | - Maria Berdasco
- Cancer Epigenetics Group, Cancer Epigenetics and Biology Programme (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain
| | - Grazyna Kochan
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Edinburgh, United Kingdom
| | - Berta Ibañez
- Red de Evaluación en Servicios Sanitarios y Enfermedades Cronicas (REDISSEC), Navarrabiomed-Fundación Miguel Servet, IdiSNA, Navarra, Spain
| | - José Miguel Lera
- Department of Surgery, Complejo Hospitalario de Navarra, Navarra Health Service, Navarra, Spain
| | - David Guerrero-Setas
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet (FMS), Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Navarra, Spain
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17
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Grawenda AM, O'Neill E. Clinical utility of RASSF1A methylation in human malignancies. Br J Cancer 2015; 113:372-81. [PMID: 26158424 PMCID: PMC4522630 DOI: 10.1038/bjc.2015.221] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 05/11/2015] [Accepted: 05/13/2015] [Indexed: 02/06/2023] Open
Abstract
The high frequency of RASSF1A methylation has been noted in a vast number of patients in a broad spectrum of malignancies, suggesting that RASSF1A inactivation is associated with cancer pathogenesis. However, whether this recurrent incidence of RASSF1A hypermethylation in human malignancies and its association with more aggressive tumour phenotype is a frequent event across different cancer types has not yet been discussed. In this review, we interrogated existing evidence for association of RASSF1A hypermethylation with clinicopathological characteristics that can indicate more invasive lesions.
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Affiliation(s)
- A M Grawenda
- CRUK/MRC Oxford Institute, Department of Oncology, University of Oxford, Oxford, UK
| | - E O'Neill
- CRUK/MRC Oxford Institute, Department of Oncology, University of Oxford, Oxford, UK
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18
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Blanco-Luquin I, Guarch R, Ojer A, Pérez-Janices N, Martín-Sánchez E, Maria-Ruiz S, Monreal-Santesteban I, Blanco-Fernandez L, Pernaut-Leza E, Escors D, Guerrero-Setas D. Differential role of gene hypermethylation in adenocarcinomas, squamous cell carcinomas and cervical intraepithelial lesions of the uterine cervix. Pathol Int 2015. [PMID: 26222671 DOI: 10.1111/pin.12332] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cervical cancer is the third most common cancer in women worldwide. The hypermethylation of P16, TSLC-1 and TSP-1 genes was analyzed in squamous cell carcinomas (SCC), cervical intraepithelial lesions (CIN) and adenocarcinomas (ADC) of the uterine cervix (total 181 lesions). Additionally human papillomavirus (HPV) type, EPB41L3, RASSF1 and RASSF2 hypermethylation were tested in ADC and the results were compared with those obtained previously by our group in SCC. P16, TSLC-1 and TSP-1 hypermethylation was more frequent in SCCs than in CINs. These percentages and the corresponding ones for EPB41L3, RASSF1 and RASSF2 genes were also higher in SCCs than in ADCs, except for P16. The presence of HPV in ADCs was lower than reported previously in SCC and CIN. Patients with RASSF1A hypermethylation showed significantly longer disease-free survival (P = 0.015) and overall survival periods (P = 0.009) in ADC patients. To our knowledge, this is the first description of the EPB41L3 and RASSF2 hypermethylation in ADCs. These results suggest that the involvement of DNA hypermethylation in cervical cancer varies depending on the histological type, which might contribute to explaining the different prognosis of patients with these types of tumors.
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Affiliation(s)
- Idoia Blanco-Luquin
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain.,Cancer Immunomodulation Group, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain.,Division of Infection and Immunity, Rayne Institute, University College London (UCL), London, UK
| | - Rosa Guarch
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain.,Department of Pathology, Complejo Hospitalario de Navarra, Navarra Health Service, Pamplona, Spain
| | - Amaya Ojer
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain
| | - Noemí Pérez-Janices
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain.,Division of Infection and Immunity, Rayne Institute, University College London (UCL), London, UK
| | - Esperanza Martín-Sánchez
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain
| | - Sergio Maria-Ruiz
- Department of Pathology, Complejo Hospitalario de Navarra, Navarra Health Service, Pamplona, Spain
| | - Iñaki Monreal-Santesteban
- Genomics Unit, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain
| | - Laura Blanco-Fernandez
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain
| | - Eduardo Pernaut-Leza
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain
| | - David Escors
- Cancer Immunomodulation Group, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain.,Division of Infection and Immunity, Rayne Institute, University College London (UCL), London, UK
| | - David Guerrero-Setas
- Cancer Epigenetics Group, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain.,Genomics Unit, Navarrabiomed-Fundación Miguel Servet, Instituto de Investigaciones Sanitarias de Navarra-IdiSNA, Pamplona, Spain
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19
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A rapid and accurate closed-tube Methylation-Sensitive High Resolution Melting Analysis assay for the semi-quantitative determination of SOX17 promoter methylation in clinical samples. Clin Chim Acta 2015; 444:303-9. [DOI: 10.1016/j.cca.2015.02.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Revised: 02/11/2015] [Accepted: 02/19/2015] [Indexed: 12/23/2022]
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20
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Deng J, Liang H, Ying G, Li H, Xie X, Yu J, Fan D, Hao X. Methylation of ras association domain protein 10 (RASSF10) promoter negative association with the survival of gastric cancer. Am J Cancer Res 2014; 4:916-923. [PMID: 25520879 PMCID: PMC4266723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Accepted: 10/12/2014] [Indexed: 06/04/2023] Open
Abstract
OBJECTIVE The present study was conducted to elucidate the prognostic prediction value of the methylation of the RASSF10 promoter in gastric cancer (GC). METHODS A total of 300 patients with GC revealed the methylation degrees of the DNA of the RASSF10 promoter. Methylation-specific PCR (MSP) analysis was performed to qualitatively detect the methylated degrees of the DNA of the RASSF10 promoter of 300 patients with GC. Associations between molecular, clinicopathological and survival data were analyzed. RESULTS The protein and mRNA expressions of RASSF10 in GC tissues were lower than those in normal gastric mucosal tissues. In the MSP analysis cohort, patients with methylated RASSF10 promoter exhibited significantly shorter median OS than those with unmethylated RASSF10 promoter (P < 0.001). Multivariate survival analysis results showed that methylated RASSF10 promoter was an independent predictor of the survival of patients with GC. CONCLUSIONS The methylation of the RASSF10 promoter could be applied for the clinical prediction of the prognosis of GC.
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Affiliation(s)
- Jingyu Deng
- Department of Gastroenterology, Tianjin Medical University Cancer Hospital, City Key Laboratory of Tianjin Cancer Center and National Clinical Research Center for CancerTianjin, China
| | - Han Liang
- Department of Gastroenterology, Tianjin Medical University Cancer Hospital, City Key Laboratory of Tianjin Cancer Center and National Clinical Research Center for CancerTianjin, China
| | - Guoguang Ying
- Central Laboratory, Tianjin Medical University Cancer Hospital, City Key Laboratory of Tianjin Cancer Center and National Clinical Research Center for CancerTianjin, China
| | - Haixin Li
- Department of Epidemiology, Tianjin Medical University Cancer Hospital, City Key Laboratory of Tianjin Cancer Center and National Clinical Research Center for CancerTianjin, China
| | - Xingming Xie
- Department of Gastroenterology, Tianjin Medical University Cancer Hospital, City Key Laboratory of Tianjin Cancer Center and National Clinical Research Center for CancerTianjin, China
| | - Jun Yu
- Institute of Digestive Disease, Li Ka Shing Institute of Health Science, Chinese University of Hong KongShatin, Hong Kong
| | - Daiming Fan
- State Key Laboratory of Cancer Biology and Institute of Digestive Diseases, Xijing Hospital, Fourth Military Medical UniversityXi’an, China
| | - Xishan Hao
- Department of Gastroenterology, Tianjin Medical University Cancer Hospital, City Key Laboratory of Tianjin Cancer Center and National Clinical Research Center for CancerTianjin, China
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21
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CpG island methylator phenotype and prognosis of colorectal cancer in Northeast China. BIOMED RESEARCH INTERNATIONAL 2014; 2014:236361. [PMID: 25243122 PMCID: PMC4163374 DOI: 10.1155/2014/236361] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 07/23/2014] [Indexed: 02/06/2023]
Abstract
Purpose. To investigate the association between CpG island methylator phenotype (CIMP) and the overall survival of sporadic colorectal cancer (CRC) in Northeast China. Methods. 282 sporadic CRC patients were recruited in this study. We selected MLH1, MGMT, p16, APC, MINT1, MINT31, and RUNX3 as the CIMP panel markers. The promoter methylation was assessed by methylation sensitive high resolution melting (MS-HRM). Proportional hazards-regression models were fitted with computing hazard ratios (HR) and the corresponding 95% confidence intervals (95% CI). Results. 12.77% (36/282) of patients were CIMP-0, 74.1% (209/282) of patients were CIMP-L, and 13.12% (37/282) of patients were CIMP-H. The five-year survival of the 282 CRC patients was 58%. There was significant association between APC gene promoter methylation and CRC overall survival (HR = 1.61; 95% CI: 1.05–2.46; P = 0.03). CIMP-H was significantly associated with worse prognosis compared to CIMP-0 (HR = 3.06; 95% CI: 1.19–7.89; P = 0.02) and CIMP-L (HR = 1.97; 95% CI: 1.11–3.48; P = 0.02), respectively. While comparing with the combine of CIMP-L and CIMP-0 (CIMP-L/0), CIMP-H also presented a worse prognosis (HR = 2.31; 95% CI: 1.02–5.24; P = 0.04). Conclusion. CIMP-H may be a predictor of a poor prognosis of CRC in Northeast China patients.
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22
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Zhou XH, Yang CQ, Zhang CL, Gao Y, Yuan HB, Wang C. RASSF5 inhibits growth and invasion and induces apoptosis in osteosarcoma cells through activation of MST1/LATS1 signaling. Oncol Rep 2014; 32:1505-12. [PMID: 25109282 DOI: 10.3892/or.2014.3387] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 07/09/2014] [Indexed: 11/06/2022] Open
Abstract
Ras association (RalGDS/AF-6) domain family member RASSF5 has been implicated in a variety of key biological processes, including cell proliferation, cell cycle regulation and apoptosis. It is believed to play an important role in tumorigenesis as a tumor suppressor in a number of malignancies. Yet, little is known concerning the function and underlying mechanisms of RASSF5 in human osteosarcoma (OS). The expression of RASSF5 was examined by immunohistochemical assay using a tissue microarray in 45 cases of OS tissues. A gain-of-function approach was used to observe the effects of lentiviral vector-mediated overexpression of RASSF5 (Lv-RASSF5) on cell growth, invasion and apoptosis, respectively, as indicated by MTT, Transwell and flow cytometry assays, and the expression levels of mammalian sterile 20-like (MST1) kinase, large tumor suppressor 1 (LATS1), proliferating cell nuclear antigen (PCNA), matrix metallopeptidase-9 (MMP-9) and p53 were detected by real-time PCR and western blot assays in OS cells (MG-63 and U-2 OS). The results indicated that the expression of RASSF5 protein was significantly downregulated in OS tissues compared to that in adjacent non-cancerous tissues (ANCT) (40.0 vs. 73.3%, P=0.002), and had a negative correlation with distant metastasis of the tumor (P=0.01). Overexpression of RASSF5 markedly suppressed cell proliferation and invasion, and induced cell apoptosis in the OS cell lines with increased expression of MST1, LATS1 and p53 and decreased expression of PCNA and MMP-9. Taken together, our findings demonstrate that RASSF5 expression is negatively correlated with distant metastasis of OS, and RASSF5 may function as a tumor suppressor in OS cells through activation of the MST1/LATS1 pathway.
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Affiliation(s)
- Xu-Hui Zhou
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
| | - Chao-Qun Yang
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
| | - Cheng-Lin Zhang
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
| | - Yang Gao
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
| | - Hong-Bin Yuan
- Department of Anesthesiology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
| | - Ce Wang
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
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23
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Kagohara LT, Schussel JL, Subbannayya T, Sahasrabuddhe N, Lebron C, Brait M, Maldonado L, Valle BL, Pirini F, Jahuira M, Lopez J, Letelier P, Brebi-Mieville P, Ili C, Pandey A, Chatterjee A, Sidransky D, Guerrero-Preston R. Global and gene-specific DNA methylation pattern discriminates cholecystitis from gallbladder cancer patients in Chile. Future Oncol 2014; 11:233-49. [PMID: 25066711 PMCID: PMC4332836 DOI: 10.2217/fon.14.165] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
AIM The aim of the study was to evaluate the use of global and gene-specific DNA methylation changes as potential biomarkers for gallbladder cancer (GBC) in a cohort from Chile. MATERIAL & METHODS DNA methylation was analyzed through an ELISA-based technique and quantitative methylation-specific PCR. RESULTS Global DNA Methylation Index (p = 0.02) and promoter methylation of SSBP2 (p = 0.01) and ESR1 (p = 0.05) were significantly different in GBC when compared with cholecystitis. Receiver curve operator analysis revealed promoter methylation of APC, CDKN2A, ESR1, PGP9.5 and SSBP2, together with the Global DNA Methylation Index, had 71% sensitivity, 95% specificity, a 0.97 area under the curve and a positive predictive value of 90%. CONCLUSION Global and gene-specific DNA methylation may be useful biomarkers for GBC clinical assessment.
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Affiliation(s)
- Luciane Tsukamoto Kagohara
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Juliana L Schussel
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
- Department of Oral Medicine, Post Graduation Program in Dentistry, Universidade Federal do Paraná, Curitiba, Brazil
| | | | | | - Cynthia Lebron
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Mariana Brait
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Leonel Maldonado
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Blanca L Valle
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Francesca Pirini
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Martha Jahuira
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Jaime Lopez
- Universidad de La Frontera, Facultad de Medicina, Departamento de Anatomía Patológica, Laboratorio Patología Molecular, BIOREN-CEGIN, Temuco, Chile
| | - Pablo Letelier
- Universidad de La Frontera, Facultad de Medicina, Departamento de Anatomía Patológica, Laboratorio Patología Molecular, BIOREN-CEGIN, Temuco, Chile
- Escuela Ciencias de la Salud, Universidad Católica de Temuco, Temuco, Chile
| | - Priscilla Brebi-Mieville
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
- Universidad de La Frontera, Facultad de Medicina, Departamento de Anatomía Patológica, Laboratorio Patología Molecular, BIOREN-CEGIN, Temuco, Chile
| | - Carmen Ili
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
- Universidad de La Frontera, Facultad de Medicina, Departamento de Anatomía Patológica, Laboratorio Patología Molecular, BIOREN-CEGIN, Temuco, Chile
| | - Akhilesh Pandey
- McKusick–Nathans Institute of Genetic Medicine, Baltimore, MD 21205, USA
- Department of Biological Chemistry, Baltimore, MD 21205, USA
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Aditi Chatterjee
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
- Institute of Bioinformatics, Whitefield, Bangalore 560066, Karnataka, India
| | - David Sidransky
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Rafael Guerrero-Preston
- Department of Otolaryngology–Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- University of Puerto Rico School of Medicine, Department of Obstetrics & Gynecology, San Juan, Puerto Rico
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24
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Bilgrami SM, Qureshi SA, Pervez S, Abbas F. Promoter hypermethylation of tumor suppressor genes correlates with tumor grade and invasiveness in patients with urothelial bladder cancer. SPRINGERPLUS 2014; 3:178. [PMID: 24790823 PMCID: PMC4000596 DOI: 10.1186/2193-1801-3-178] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Accepted: 02/24/2014] [Indexed: 01/15/2023]
Abstract
Purpose To investigate the promoter methylation status at selected loci which encode for key proteins involved in apoptosis, DNA repair, cell cycle control and progression in urothelial cell carcinoma of bladder and compare the findings from tissue samples with that of plasma. Methods Total genomic DNA was isolated from 43 non-muscle invasive (low grade) and 33 muscle invasive (high grade) urothelial bladder cancer samples along with 10 control cases of normal bladder mucosa. Promoter methylation status was investigated for RASSF1A, APC, MGMT, CDKN2A and CDKN2B genes using real-time methylation-specific PCR with SYBR® green. Plasma samples from 16 patients with muscle invasive high grade bladder cancer were also subjected to similar analyses. Results Promoter hypermethylation was frequently observed in RASSF1A, APC and MGMT gene promoters (p-value < 0.001). The methylation was more prominent in the muscle invasive high grade bladder cancer when compared to non-muscle invasive low grade group (p-value < 0.001) and normal bladder mucosa (p-value < 0.05). The RNA expression of RASSF1A, APC and MGMT was also found to be decreased in the muscle-invasive high grade bladder cancer when compared to the non muscle invasive low grade group (p-value < 0.05). RASSF1A, MGMT and CDKN2A showed comparable results when data from 16 plasma samples was compared to the corresponding tissue samples. Conclusion Our results suggest that epigenetic silencing of RASSF1A, APC and MGMT genes is strongly associated with invasive high grade urothelial bladder cancer. Thus, status of promoter methylation has the potential to serve as valuable tool for assessing aggressiveness of urothelial cell carcinoma of bladder. Electronic supplementary material The online version of this article (doi:10.1186/2193-1801-3-178) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shumaila M Bilgrami
- Office of Research and Graduate Studies, Aga Khan University, Stadium Road, Karachi, 74800 Pakistan
| | - Sohail A Qureshi
- Department of Biology, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Sector-U, D.H.A., Lahore, 54792 Pakistan
| | - Shahid Pervez
- Department of Microbiology and Pathology, Aga Khan University, Stadium Road, Karachi, 74800 Pakistan
| | - Farhat Abbas
- Department of Surgery, Aga Khan University, Stadium Road, Karachi, 74800 Pakistan
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25
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Chen H, Yu Y, Rong S, Wang H. Evaluation of diagnostic accuracy of DNA methylation biomarkers for bladder cancer: a systematic review and meta-analysis. Biomarkers 2014; 19:189-97. [PMID: 24693860 DOI: 10.3109/1354750x.2014.889211] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hong Chen
- Oncology Department, Harbin Medical University Cancer HospitalHarbin China
| | - Yang Yu
- Department of general surgery, Shengjing Hospital of China Medical University
Shenyang, China
| | - Shuang Rong
- Harbin Maternal and Child Health Care HospitalHarbin China
| | - Hongyan Wang
- Department of general surgery, Shengjing Hospital of China Medical University
Shenyang, China
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26
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Li X, Wang Y, Zhang Z, Yao X, Ge J, Zhao Y. Correlation of MLH1 and MGMT methylation levels between peripheral blood leukocytes and colorectal tissue DNA samples in colorectal cancer patients. Oncol Lett 2013; 6:1370-1376. [PMID: 24179526 PMCID: PMC3813787 DOI: 10.3892/ol.2013.1543] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 08/07/2013] [Indexed: 02/06/2023] Open
Abstract
CpG island methylation in the promoter regions of the DNA mismatch repair gene mutator L homologue 1 (MLH1) and DNA repair gene O6-methylguanine-DNA methyltransferase (MGMT) genes has been shown to occur in the leukocytes of peripheral blood and colorectal tissue. However, it is unclear whether the methylation levels in the blood leukocytes and colorectal tissue are correlated. The present study analyzed and compared the levels of MGMT and MLH1 gene methylation in the leukocytes of peripheral blood and colorectal tissues obtained from patients with colorectal cancer (CRC). The methylation levels of MGMT and MLH1 were examined using methylation-sensitive high-resolution melting (MS-HRM) analysis. A total of 44 patients with CRC were selected based on the MLH1 and MGMT gene methylation levels in the leukocytes of the peripheral blood. Corresponding colorectal tumor and normal tissues were obtained from each patient and the DNA methylation levels were determined. The correlation coefficients were evaluated using Spearman's rank test. Agreement was determined by generalized κ-statistics. Spearman's rank correlation coefficients (r) for the methylation levels of the MGMT and MLH1 genes in the leukocytes of the peripheral blood and normal colorectal tissue were 0.475 and 0.362, respectively (P=0.001 and 0.016, respectively). The agreement of the MGMT and MLH1 gene methylation levels in the leukocytes of the peripheral blood and normal colorectal tissue were graded as fair and poor (κ=0.299 and 0.126, respectively). The methylation levels of MGMT and MLH1 were moderately and weakly correlated between the patient-matched leukocytes and the normal colorectal tissue, respectively. Blood-derived DNA methylation measurements may not always represent the levels of normal colorectal tissue methylation.
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Affiliation(s)
- Xia Li
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
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Silencing of RASSF3 by DNA hypermethylation is associated with tumorigenesis in somatotroph adenomas. PLoS One 2013; 8:e59024. [PMID: 23555615 PMCID: PMC3610897 DOI: 10.1371/journal.pone.0059024] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 02/08/2013] [Indexed: 12/03/2022] Open
Abstract
The pathogenic mechanisms underlying pituitary somatotroph adenoma formation, progression are poorly understood. To identify candidate tumor suppressor genes involved in pituitary somatotroph adenoma tumorigenesis, we used HG18 CpG plus Promoter Microarray in 27 human somatotroph adenomas and 4 normal human adenohypophyses. RASSF3 was found with frequent methylation of CpG island in its promoter region in somatotroph adenomas but rarely in adenohypophyses. This result was confirmed by pyrosequencing analysis. We also found that RASSF3 mRNA level correlated negatively to its gene promoter methylation level. RASSF3 hypermethylation and downregulation was also observed in rat GH3 and mouse GT1.1 somatotroph adenoma cell lines. 5-Aza-2′ deoxycytidine and trichostatin-A treatment induced RASSF3 promoter demethylation, and restored its expression in GH3 and GT1.1 cell lines. RASSF3 overexpression in GH3 and GT1.1 cells inhibited proliferation, induced apoptosis accompanied by increased Bax, p53, and caspase-3 protein and decreased Bcl-2 protein expression. We also found that the antitumor effect of RASSF3 was p53 dependent, and p53 knockdown blocked RASSF3-induced apoptosis and growth inhibition. Taken together, our results suggest that hypermethylation-induced RASSF3 silencing plays an important role in the tumorigenesis of pituitary somatotroph adenomas.
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