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Du H, Tang Q, Yang J, Yan B, Yang L, Wang M. Genome-wide DNA methylation profiling of CD4 + T lymphocytes identifies differentially methylated loci associated with adult primary refractory immune thrombocytopenia. BMC Med Genomics 2023; 16:124. [PMID: 37291547 PMCID: PMC10251572 DOI: 10.1186/s12920-023-01557-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 05/23/2023] [Indexed: 06/10/2023] Open
Abstract
BACKGROUND DNA methylation played a crucial role in the pathogenesis of immune thrombocytopenia (ITP). However, genome-wide DNA methylation analysis has not been applied thus far. The present study aimed to provide the first DNA methylation profiling for ITP. METHODS Peripheral blood CD4+ T lymphocytes samples were collected from 4 primary refractory ITP cases and 4 age-matched healthy controls, and DNA methylome profiling was performed using Infinium MethylationEPIC BeadChip. Differentially methylated CpG sites were further validated in another independent cohort of 10 ITP patients and 10 healthy controls using qRT-PCR. RESULTS The DNA methylome profiling identified a total of 260 differentially methylated CpG sites mapping to 72 hypermethylated and 64 hypomethylated genes. These genes were mainly enriched in the actin nucleation of the Arp2/3 complex, vesicle transport, histone H3-K36 demethylation, Th1 and Th2 cell differentiation, and Notch signaling pathway according to the GO and KEGG databases. The mRNA expression of CASP9, C1orf109, and AMD1 were significantly different. CONCLUSIONS Given the altered DNA methylation profiling of ITP, our study provides new insights into its genetic mechanism and suggests candidate biomarkers for the diagnosis and treatment of ITP.
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Affiliation(s)
- Hanzhi Du
- Department of Haematology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Qinghua Tang
- Department of Osteoporosis, Xi'an Jiaotong University Affiliated HongHui Hospital, Xi'an, China
| | - Jian Yang
- Department of Clinical Research Centre, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Bin Yan
- Department of Clinical Research Centre, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lihong Yang
- Department of Clinical Research Centre, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Mengchang Wang
- Department of Haematology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
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Tan JH, Ahmad Azahari AHS, Ali A, Ismail NAS. Scoping Review on Epigenetic Mechanisms in Primary Immune Thrombocytopenia. Genes (Basel) 2023; 14:555. [PMID: 36980827 PMCID: PMC10048672 DOI: 10.3390/genes14030555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 02/07/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023] Open
Abstract
Immune Thrombocytopenia (ITP) is an autoimmune blood disorder that involves multiple pathways responsible for the homeostasis of the immune system. Numerous pieces of literature have proposed the potential of immune-related genes as diagnostic and prognostic biomarkers, which mostly implicate the role of B cells and T cells in the pathogenesis of ITP. However, a more in-depth understanding is required of how these immune-related genes are regulated. Thus, this scoping review aims to collate evidence and further elucidate each possible epigenetics mechanism in the regulation of immunological pathways pertinent to the pathogenesis of ITP. This encompasses DNA methylation, histone modification, and non-coding RNA. A total of 41 studies were scrutinized to further clarify how each of the epigenetics mechanisms is related to the pathogenesis of ITP. Identifying epigenetics mechanisms will provide a new paradigm that may assist in the diagnosis and treatment of immune thrombocytopenia.
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Affiliation(s)
- Jian Hong Tan
- Department of Paediatric, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia
| | - Ahmad Hazim Syakir Ahmad Azahari
- Department of Paediatric, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia
| | - Adli Ali
- Department of Paediatric, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia
- Research Centre, Hospital Tunku Ampuan Besar Tuanku Aishah Rohani, UKM Specialist Children’s Hospital, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia
| | - Noor Akmal Shareela Ismail
- Research Centre, Hospital Tunku Ampuan Besar Tuanku Aishah Rohani, UKM Specialist Children’s Hospital, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia
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3
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Liu SY, Shan NN. DNA methylation plays an important role in immune thrombocytopenia. Int Immunopharmacol 2020; 83:106390. [DOI: 10.1016/j.intimp.2020.106390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 03/06/2020] [Accepted: 03/07/2020] [Indexed: 01/16/2023]
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4
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Zou Y, Liu FY, Wang LQ, Guo JB, Yang BC, Wan XD, Wang F, He M, Huang OP. Downregulation of DNA methyltransferase 3 alpha promotes cell proliferation and invasion of ectopic endometrial stromal cells in adenomyosis. Gene 2017; 604:41-47. [DOI: 10.1016/j.gene.2016.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 11/22/2016] [Accepted: 12/12/2016] [Indexed: 02/06/2023]
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5
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Gouda HM, Kamel NM, Meshaal SS. Association of DNA Methyltransferase 3B Promotor Polymorphism With Childhood Chronic Immune Thrombocytopenia. Lab Med 2016; 47:312-317. [PMID: 27590349 DOI: 10.1093/labmed/lmw040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND DNA methylation is an epigenetic process that refers to chromatin-based mechanisms in the regulation of gene expression without DNA alternation. It is mediated by DNA methyltransferases (DNMTs). The DNA methyltransferase 3B (DNMT3B) gene contains a C-to-T single nucleotide polymorphism (SNP; rs2424913) in the Promotor region, 149 base pairs from the transcription start site, which is reported to significantly increase the Promotor activity. OBJECTIVE To investigate the prevalance of rs2424913 single nucleotide polymorphism located in the DNMT3B gene Promotor. METHODS In the present study, we investigated the prevalence of rs2424913 single nucleotide polymorphism located in DNMT3B gene Promotor by restriction fragment length polymorphism (PCR-RFLP) in Egyptian pediatric chronic immune thrombocytopenia (ITP) patients and controls. RESULTS The homozygous genotype (TT) was significantly higher in our patient and conferred almost 3-fold increased risk of chronic ITP when compared to controls. CONCLUSION The present study shows that DNMT3B rs2424913 promotor polymorphism represents a genetic risk factor that may play an important role in understanding the pathogenesis of chronic ITP.
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Affiliation(s)
| | - Nermine M Kamel
- Department of Pediatrics, Faculty of Medicine, Cairo University, Cairo, Egypt
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6
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Siddiqui NN, Ul Haq A, Siddiqui OA, Khan R. DNA methyltransferase 1, 3a, and 3b expression in hepatitis C associated human hepatocellular carcinoma and their clinicopathological association. Tumour Biol 2016; 37:10487-97. [PMID: 26850594 DOI: 10.1007/s13277-016-4941-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 01/29/2016] [Indexed: 12/20/2022] Open
Abstract
Identification of biomarker will obligate a substantial influence on various cancer management and treatment. We hypothesize that genetic/proteomic and epigenetic studies should be uncovering modifications which may be independently or jointly affect the expression of the genes that are involved in the progression of liver cancer (LC). For this purpose, we examined the effect of expressional changes of DNMTs on HCV infected LC of different genotypes. We found that both mRNA and protein expression levels of DNMT1, 3a, and 3b were upregulated in genotype 1b and 3a HCV infected patients as compared to control. However, DNMT3b mRNA levels did not change in genotypes 2a, 3, and 4, but were upregulated at the protein level by genotype 1b, 2a, and 3a. Furthermore, no significant changes were observed for DNMTs investigated in sample expressing the genotypes 5 and 6. Our findings suggest that HCV at least in part by altering DNMTs expression may play a significant role in HCC progression.
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MESH Headings
- Amino Acid Sequence
- Carcinoma, Hepatocellular/enzymology
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/pathology
- Carcinoma, Hepatocellular/virology
- DNA (Cytosine-5-)-Methyltransferase 1
- DNA (Cytosine-5-)-Methyltransferases/biosynthesis
- DNA (Cytosine-5-)-Methyltransferases/genetics
- DNA (Cytosine-5-)-Methyltransferases/physiology
- DNA Methylation
- DNA Methyltransferase 3A
- DNA, Neoplasm/genetics
- DNA, Neoplasm/metabolism
- Enzyme Induction
- Epigenesis, Genetic
- Female
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Genotype
- Hepacivirus/classification
- Hepacivirus/isolation & purification
- Hepatitis C, Chronic/complications
- Hepatitis C, Chronic/virology
- Humans
- Liver Neoplasms/enzymology
- Liver Neoplasms/genetics
- Liver Neoplasms/pathology
- Liver Neoplasms/virology
- Male
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Neoplasm Proteins/physiology
- Protein Processing, Post-Translational
- RNA, Messenger/biosynthesis
- RNA, Messenger/genetics
- RNA, Neoplasm/biosynthesis
- RNA, Neoplasm/genetics
- Tumor Virus Infections/virology
- Up-Regulation
- DNA Methyltransferase 3B
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Affiliation(s)
- Nadir Naveed Siddiqui
- The Karachi Institute of Biotechnology and Genetic Engineering, (KIBGE), University of Karachi, Karachi, Pakistan
| | - Ahtesham Ul Haq
- Department of Biochemistry, University of Karachi-Pakistan, Karachi, Pakistan
- Department of Molecular Genetics, Dr. Ziauddin Hospital, North Nazimabad, Karachi, 74700, Pakistan
| | - Owais Ali Siddiqui
- Department of Molecular Genetics, Dr. Ziauddin Hospital, North Nazimabad, Karachi, 74700, Pakistan
| | - Rizma Khan
- Department of Molecular Genetics, Dr. Ziauddin Hospital, North Nazimabad, Karachi, 74700, Pakistan.
- Department of Biochemistry, Ziauddin University, Clifton, Karachi, 75600, Pakistan.
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Zhou H, Hou Y, Liu X, Qiu J, Feng Q, Wang Y, Zhang X, Min Y, Shao L, Liu X, Li G, Li L, Yang L, Xu S, Ni H, Peng J, Hou M. Low-dose decitabine promotes megakaryocyte maturation and platelet production in healthy controls and immune thrombocytopenia. Thromb Haemost 2015; 113:1021-34. [PMID: 25566808 DOI: 10.1160/th14-04-0342] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 11/23/2014] [Indexed: 12/16/2022]
Abstract
Impaired megakaryocyte maturation and insufficient platelet production have been shown to participate in the pathogenesis of immune thrombocytopenia (ITP). Our previous study demonstrated that low expression of tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) in megakaryocytes contributed to impaired platelet production in ITP. Decitabine (DAC), a demethylating agent, is known to promote cell differentiation and maturation at low doses. However, whether decitabine is potential in promoting megakaryocyte maturation and platelet release in ITP is unclear. In this study, we evaluated the effect of DAC on megakaryocyte maturation and platelet release in the presence of ITP plasma that has been shown to cause impaired megakaryocyte maturation and platelet production. We observed that low-dose DAC (10 nM) could significantly increase the number of mature polyploid (≥ 4N) megakaryocytes in cultures with plasma from healthy controls and more than one-half of ITP patients in vitro. Furthermore, the number of platelets released from these megakaryocytes significantly increased compared with those untreated with DAC. In these megakaryocytes, DAC significantly enhanced TRAIL expression via decreasing its promoter methylation status. These findings demonstrate that low-dose DAC can promote megakaryocyte maturation and platelet production and enhance TRAIL expression in megakaryocytes in healthy controls and ITP. The potential therapeutic role of low-dose DAC may be beneficial for thrombocytopenic disorders.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jun Peng
- Jun Peng, Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, 107 West Wenhua Road, Jinan, Shandong, 250012, China, Tel.: +86 531 82169867, Fax: +86 531 86927544, E-mail:
| | - Ming Hou
- Ming Hou, Department of Hematology, Qilu Hospital, Shandong University, 107 West Wenhua Road, Jinan, Shandong, 250012, China, Tel.: +86 531 82169879, Fax: +86 531 86927544, E-mail:
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Chen Z, Guo Z, Ma J, Ma J, Liu F, Wu R. Foxp3 methylation status in children with primary immune thrombocytopenia. Hum Immunol 2014; 75:1115-9. [PMID: 25305033 DOI: 10.1016/j.humimm.2014.09.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 09/27/2014] [Accepted: 09/27/2014] [Indexed: 01/31/2023]
Abstract
AIM To investigate the status of DNA methylation in the Foxp3 promoter in pediatric ITP patients and assess the role of DNA methylation of Treg cells in the pathogenesis of ITP. METHODS Quantitative DNA methylation levels of Foxp3 promoter in pediatric ITP patients were detected by MassARRAY EpiTYPER. Methylation levels of Foxp3 promoter were analyzed in ITP patients and normal controls. RESULTS Significantly higher expression of CpG-2, CpG-3 and CpG-11.12 was observed in ITP patients compared to the controls. A subgroup analysis revealed that persistent and chronic ITP patients exhibited significantly higher CpG-6 expression than in the subgroup of newly diagnosed ITP patients. All patients who represented newly diagnosed ITP at admission were reclassified at later follow-up. In this follow-up subgroup analysis, there were significantly higher levels of CpG-6 in the persistent ITP group than that in the newly diagnosed ITP group. CONCLUSIONS Our results indicate that defective Treg cell activity identified in ITP might be partially mediated through hypermethylation of CpG sites in the promoter region of Foxp3.
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Affiliation(s)
- Zhenping Chen
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China; National Key Discipline of Pediatrics, Ministry of Education, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China; Key Laboratory of Major Diseases in Children, Ministry of Education, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China.
| | - Zhenxing Guo
- Department of Hematology/Oncology, First Hospital of Tsinghua University, Beijing 100016, China
| | - Jie Ma
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China; National Key Discipline of Pediatrics, Ministry of Education, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China; Key Laboratory of Major Diseases in Children, Ministry of Education, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China
| | - Jingyao Ma
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China; National Key Discipline of Pediatrics, Ministry of Education, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China; Key Laboratory of Major Diseases in Children, Ministry of Education, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China
| | - Fuhong Liu
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China; National Key Discipline of Pediatrics, Ministry of Education, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China; Key Laboratory of Major Diseases in Children, Ministry of Education, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China
| | - Runhui Wu
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China; National Key Discipline of Pediatrics, Ministry of Education, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China; Key Laboratory of Major Diseases in Children, Ministry of Education, Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, 56 Nanlishi Road, Beijing 100045, China.
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Abstract
DNA methylation is a heritable, stable, and also reversible way of DNA modification; it can regulate gene expression without changing the nucleotide sequences. Because it takes part in regulation of immune responses, the loss of methylation homeostasis in immune cells will result in autoimmune disease by inducing aberrant gene expression. Primary immune thrombocytopenia (ITP) is an acquired autoimmune disease with many immune deficiencies. Recently, it was well documented that abnormal DNA methylation is also involved in the etiology of ITP. In this review, we elucidate the role of DNA methylation in autoimmune diseases by summarizing the DNA methylation-sensitive genes and the relationship between DNA methylation and ITP.
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Affiliation(s)
- Huiyuan Li
- State Key Laboratory of Experimental Hematology, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, PR China
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10
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Khorshied MM, El-Ghamrawy MK. DNA methyltransferase 3B (DNMT3B -579G>T) promotor polymorphism and the susceptibility to pediatric immune thrombocytopenic purpura in Egypt. Gene 2012; 511:34-7. [PMID: 23000068 DOI: 10.1016/j.gene.2012.09.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2012] [Revised: 09/03/2012] [Accepted: 09/06/2012] [Indexed: 01/19/2023]
Abstract
Idiopathic thrombocytopenic purpura (ITP) is an autoimmune disease characterized by increased platelet destruction. Although the etiology of ITP remains unclear, it is accepted that both environmental and genetic factors play an important role in the development of the disease. The present study aimed at exploring a novel molecular determinant that may influence the susceptibility and course of ITP in Egyptian children. To achieve our aim, genotyping of DNMT3B -579G>T promotor polymorphism by polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) assay. The current study was conducted on 140 ITP patients and 150 age and gender matched healthy controls. The results obtained revealed that DNMT3B -579 TT homotype was significantly higher in ITP patients and conferred almost three fold increased risk of ITP (OR=3.16, 95%CI=1.73-5.79). There was no statistically significant difference between ITP patients with wild or mutant genotypes as regards their clinical or laboratory data. Furthermore, there was no statistical difference in the distribution of DNMT3B -579G>T genotypes between acute and chronic ITP patients. In conclusion, DNMT3B -579G>T promotor polymorphism represents a novel genetic risk factor for ITP but not a predictor for tendency to chronicity in pediatric ITP in Egypt.
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