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Zhu M, Xu T, Ji L, Jiang B, Wu K. MIR143HG promotes methylation of transcription factor HOXB7 promoter by recruiting methyltransferase DNMT1 to prevent the progression of colon cancer. FASEB J 2024; 38:e23378. [PMID: 38127104 DOI: 10.1096/fj.202301060rrr] [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: 05/26/2023] [Revised: 11/22/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
In recent years, accumulating evidence has demonstrated the role of long noncoding RNAs (lncRNAs) in colon cancer. We aim to investigate the role of MIR143HG, also known as CARMN (Cardiac mesoderm enhancer-associated noncoding RNA) in colon cancer and explore the related mechanisms. An RNAseq data analysis was performed to screen differentially expressed lncRNAs associated with colon cancer. Next, MIR143HG expression was quantified in colon cancer cells. Moreover, the contributory roles of MIR143HG in the progression of colon cancer with the involvement of DNMT1 and HOXB7 (Homeobox B7) were evaluated after restored MIR143HG or depleted HOXB7. Finally, the effects of MIR143HG were investigated in vivo by measuring tumor formation in nude mice. High-throughput transcriptome sequencing was employed to validate the specific mechanisms by which MIR143HG and HOXB7 affect tumor growth in vivo. MIR143HG was found to be poorly expressed, while HOXB7 was highly expressed in colon cancer. MIR143HG could promote HOXB7 methylation by recruiting DNMT1 to reduce HOXB7 expression. Upregulation of MIR143HG or downregulation of HOXB7 inhibited cell proliferation, invasion and migration and facilitated apoptosis in colon cancer cells so as to delay the progression of colon cancer. The same trend was identified in vivo. Our study provides evidence that restoration of MIR143HG suppressed the progression of colon cancer via downregulation of HOXB7 through DNMT1-mediated HOXB7 promoter methylation. Thus, MIR143HG may be a potential candidate for the treatment of colon cancer.
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Affiliation(s)
- Mo Zhu
- Department of Gastrointestinal Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian, P.R. China
| | - Ting Xu
- Hematology Research Laboratory, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian, P.R. China
| | - Lindong Ji
- Department of Gastrointestinal Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian, P.R. China
| | - Baofei Jiang
- Department of Gastrointestinal Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian, P.R. China
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Shanghai, P.R. China
| | - Kun Wu
- Department of Gastrointestinal Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian, P.R. China
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2
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Tanwar P, Minocha S, Gupta I. A Comprehensive narrative review of transcriptomics and epigenomics of gallbladder cancer. J Cancer Res Ther 2023; 19:S499-S507. [PMID: 38384011 DOI: 10.4103/jcrt.jcrt_1823_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 09/25/2023] [Indexed: 02/23/2024]
Abstract
ABSTRACTS Gallbladder cancer (GBC) is one of the quiet prevalent and aggressive biliary tract malignant neoplasms distinguished by significant cellular heterogeneity, metastatic activity, and a poor prognosis, with varied frequency worldwide. Most cases are detected incidentally while routine screening imaging or pathological investigation of cholecystectomy tissues and usually present with advanced disease. The surgical resection is usually done in the initial clinical stage having limited spread. Despite the surgical therapy, the death rate is significant. Furthermore, the molecular mechanisms affecting the clinical course of inflammatory gallbladder to carcinogenesis remain poorly understood. There is an impending need for developing diagnostic biomarkers and targeted approaches for GBC. The newer molecular platform, such as next-generation sequencing (NGS), such as RNA-sequencing (RNAseq), single-cell sequencing, and microarray technology, has revolutionized the field of genomics, opened a new perspective in defining genetic and epigenetic characteristics identifying molecules as possible therapeutic targets. Therefore, in this review, we would analyze transcriptomic and epigenomics profiles of GBC using already published high-throughput sequencing-based studies published between 2010 and 2023. The review would also analyze the possible impact of the technological advancement on the patient management strategy and overall survival. This may also help identify target genes and pathways linked to GBC, which may help establish molecular biomarkers, for early GBC diagnosis, personalized therapy, and management.
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Affiliation(s)
- Pranay Tanwar
- Laboratory Oncology Unit, Dr BRA-IRCH, All India Institute of Medical Sciences, New Delhi, India
| | - Shilpi Minocha
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, India
| | - Ishaan Gupta
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, India
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3
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Prieto-Ortiz RG, Borráez-Segura BA, Prieto-Ortiz JE, Guevara-Cruz ÓA. Cáncer de vesícula biliar, una visión actual. REVISTA COLOMBIANA DE CIRUGÍA 2022. [DOI: 10.30944/20117582.891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Introducción. El diagnóstico de cáncer de vesícula biliar se realiza generalmente de forma incidental durante el estudio de las piezas quirúrgicas o cuando la enfermedad está avanzada y se expresa por su diseminación. Muy pocas veces se diagnostica de forma preoperatoria. Corresponde a la neoplasia más común de las vías biliares y su incidencia varía de acuerdo a la región geográfica. La región andina en Latinoamérica presenta una de las mayores incidencias a nivel mundial.
Métodos. Se realizó una revisión narrativa de la literatura, para presentar una información actualizada en lo referente a los factores de riesgo (incluyendo las alteraciones genéticas y moleculares), al diagnóstico y al tratamiento de esta patología. Basados en los datos actuales, presentamos algunas recomendaciones dirigidas al diagnóstico temprano, que permita un manejo más adecuado de nuestros pacientes.
Resultados. Se han implicado nuevos factores de riesgo relacionados con la etiología del cáncer de vesícula biliar, como la obesidad, factores genéticos y moleculares. A pesar de la disponibilidad de los métodos diagnósticos imagenológicos, no ha ocurrido una importante variación porcentual en cuanto al estadio al momento del diagnóstico.
Conclusiones. El manejo quirúrgico del cáncer de vesícula biliar está indicado en los estadios más tempranos de la enfermedad y es importante evaluar las opciones terapéuticas en pacientes con enfermedad avanzada. Se considera de suma importancia el estudio anatomopatológico de la pieza quirúrgica y la revisión del informe por parte del cirujano
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Silencing of long non-coding RNA FOXD2-AS1 inhibits the progression of gallbladder cancer by mediating methylation of MLH1. Gene Ther 2021; 28:306-318. [PMID: 32917950 DOI: 10.1038/s41434-020-00187-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 07/13/2020] [Accepted: 08/05/2020] [Indexed: 01/29/2023]
Abstract
Evidence has documented the tumor-promoting properties of long non-coding RNA (lncRNA) FOXD2 adjacent opposite strand RNA 1 (FOXD2-AS1) in many cancers. However, little is known about its role in gallbladder cancer. Here, we aimed to characterize the functional relevance of lncRNA FOXD2-AS1 in gallbladder cancer and the possible mechanisms associated with methylation of MutL homolog-1 (MLH1). Initially, microarray-based gene expression profiling of gallbladder cancer was employed to identify differentially expressed lncRNAs. Next, the expression of lncRNA FOXD2-AS1 was examined, and the cell line presenting with the highest lncRNA FOXD2-AS1 expression was selected for subsequent experimentation. Then, the interaction between lncRNA FOXD2-AS1 and MLH1 was identified. The effect of lncRNA FOXD2-AS1 on proliferation, migration, invasion, and apoptosis as well as tumorigenicity of transfected GBC-SD cells was examined with gain- and loss-of-function experiments. We found that lncRNA FOXD2-AS1 was highly expressed, while MLH1 was poorly expressed in gallbladder cancer cells. Besides, lncRNA FOXD2-AS1 could promote MLH1 methylation by recruiting DNMT1 to the MLH1 promoter, and consequently inhibit MLH1 transcription. Silencing of lncRNA FOXD2-AS1 or overexpression of MLH1 inhibited gallbladder cancer cell proliferation, invasion, and migration, while facilitating cell apoptosis in vitro as well as retarding tumor growth in vivo. Thus, silencing of lncRNA FOXD2-AS1 suppressed the progression of gallbladder cancer via upregulation of MLH1 by inhibiting MLH1 promoter methylation. These findings present lncRNA FOXD2-AS1 knockdown as a potential candidate for the treatment of gallbladder cancer.
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5
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Brägelmann J, Barahona Ponce C, Marcelain K, Roessler S, Goeppert B, Gallegos I, Colombo A, Sanhueza V, Morales E, Rivera MT, de Toro G, Ortega A, Müller B, Gabler F, Scherer D, Waldenberger M, Reischl E, Boekstegers F, Garate-Calderon V, Umu SU, Rounge TB, Popanda O, Lorenzo Bermejo J. Epigenome-Wide Analysis of Methylation Changes in the Sequence of Gallstone Disease, Dysplasia, and Gallbladder Cancer. Hepatology 2021; 73:2293-2310. [PMID: 33020926 DOI: 10.1002/hep.31585] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 09/14/2020] [Accepted: 09/15/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Gallbladder cancer (GBC) is a highly aggressive malignancy of the biliary tract. Most cases of GBC are diagnosed in low-income and middle-income countries, and research into this disease has long been limited. In this study we therefore investigate the epigenetic changes along the model of GBC carcinogenesis represented by the sequence gallstone disease → dysplasia → GBC in Chile, the country with the highest incidence of GBC worldwide. APPROACH AND RESULTS To perform epigenome-wide methylation profiling, genomic DNA extracted from sections of formalin-fixed, paraffin-embedded gallbladder tissue was analyzed using Illumina Infinium MethylationEPIC BeadChips. Preprocessed, quality-controlled data from 82 samples (gallstones n = 32, low-grade dysplasia n = 13, high-grade dysplasia n = 9, GBC n = 28) were available to identify differentially methylated markers, regions, and pathways as well as changes in copy number variations (CNVs). The number and magnitude of epigenetic changes increased with disease development and predominantly involved the hypermethylation of cytosine-guanine dinucleotide islands and gene promoter regions. The methylation of genes implicated in Wnt signaling, Hedgehog signaling, and tumor suppression increased with tumor grade. CNVs also increased with GBC development and affected cyclin-dependent kinase inhibitor 2A, MDM2 proto-oncogene, tumor protein P53, and cyclin D1 genes. Gains in the targetable Erb-B2 receptor tyrosine kinase 2 gene were detected in 14% of GBC samples. CONCLUSIONS Our results indicate that GBC carcinogenesis comprises three main methylation stages: early (gallstone disease and low-grade dysplasia), intermediate (high-grade dysplasia), and late (GBC). The identified gradual changes in methylation and CNVs may help to enhance our understanding of the mechanisms underlying this aggressive disease and eventually lead to improved treatment and early diagnosis of GBC.
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Affiliation(s)
- Johannes Brägelmann
- Statistical Genetics Research Group, Institute of Medical Biometry and Informatic, University of Heidelberg, Heidelberg, Germany.,Molecular Pathology, Institute of Pathology & Department of Translational Genomics, University Hospital of Cologne, Cologne, Germany.,Mildred Scheel School of Oncology, Medical Faculty, University Hospital Cologne, Cologne, Germany
| | - Carol Barahona Ponce
- Statistical Genetics Research Group, Institute of Medical Biometry and Informatic, University of Heidelberg, Heidelberg, Germany.,Department of Basic and Clinical Oncology, Medical Faculty, University of Chile, Santiago, Chile
| | - Katherine Marcelain
- Department of Basic and Clinical Oncology, Medical Faculty, University of Chile, Santiago, Chile
| | - Stephanie Roessler
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Benjamin Goeppert
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Ivan Gallegos
- Servicio de Anatomía Patológica, Hospital Clínico de la Universidad de Chile, Santiago, Chile
| | - Alicia Colombo
- Department of Basic and Clinical Oncology, Medical Faculty, University of Chile, Santiago, Chile.,Servicio de Anatomía Patológica, Hospital Clínico de la Universidad de Chile, Santiago, Chile
| | - Verónica Sanhueza
- Servicio de Anatomía Patológica, Hospital Padre Hurtado, Santiago, Chile
| | - Erik Morales
- Facultad de Medicina, Universidad Catolica del Maule & Unidad de Anatomia Patologica del Hospital Regional de Talca, Talca, Chile
| | | | - Gonzalo de Toro
- Escuela de Tecnologia Medica, Universidad Austral de Chile sede Puerto Montt & Servicio de Anatomía Patológica, Hospital de Puerto Montt, Puerto Montt, Chile
| | - Alejandro Ortega
- Servicio de Anatomía Patológica, Hospital Regional, Arica, Chile
| | - Bettina Müller
- Servicio de Oncología Médica, Instituto Nacional del Cáncer, Santiago, Chile
| | - Fernando Gabler
- Unidad de Anatomia Patologica, Hospital San Borja Arriaran, Santiago, Chile
| | - Dominique Scherer
- Statistical Genetics Research Group, Institute of Medical Biometry and Informatic, University of Heidelberg, Heidelberg, Germany
| | - Melanie Waldenberger
- Research Unit of Molecular Epidemiology and Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Eva Reischl
- Research Unit of Molecular Epidemiology and Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Felix Boekstegers
- Statistical Genetics Research Group, Institute of Medical Biometry and Informatic, University of Heidelberg, Heidelberg, Germany
| | - Valentina Garate-Calderon
- Statistical Genetics Research Group, Institute of Medical Biometry and Informatic, University of Heidelberg, Heidelberg, Germany.,Department of Basic and Clinical Oncology, Medical Faculty, University of Chile, Santiago, Chile
| | - Sinan U Umu
- Department of Research, Cancer Registry of Norway, Oslo, Norway
| | - Trine B Rounge
- Department of Research, Cancer Registry of Norway, Oslo, Norway.,Department of Informatics, University of Oslo, Oslo, Norway
| | - Odilia Popanda
- Division of Cancer Epigenomics, German Cancer Research Center, Heidelberg, Germany
| | - Justo Lorenzo Bermejo
- Statistical Genetics Research Group, Institute of Medical Biometry and Informatic, University of Heidelberg, Heidelberg, Germany
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6
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Tulsyan S, Hussain S, Mittal B, Saluja SS, Tanwar P, Rath GK, Goodman M, Kaur T, Mehrotra R. A systematic review with in silico analysis on transcriptomic profile of gallbladder carcinoma. Semin Oncol 2020; 47:398-408. [DOI: 10.1053/j.seminoncol.2020.02.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 02/21/2020] [Indexed: 01/17/2023]
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7
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Gondkar K, Patel K, Patil Okaly GV, Nair B, Pandey A, Gowda H, Kumar P. Dickkopf Homolog 3 (DKK3) Acts as a Potential Tumor Suppressor in Gallbladder Cancer. Front Oncol 2019; 9:1121. [PMID: 31737564 PMCID: PMC6828847 DOI: 10.3389/fonc.2019.01121] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/09/2019] [Indexed: 01/19/2023] Open
Abstract
Gallbladder cancer (GBC) is a common malignancy of biliary tract cancers and its incidence has been rising rapidly worldwide. The prognosis for this disease is dismal as most of the symptoms are non-specific leading to a definitive diagnosis only at a late stage. Loss of DKK3 gene is associated with a possible tumor suppressor role in human cancers. The role and regulation of DKK3 in GBC have not been studied. We found that DKK3 expression levels were low in GBC patients and cell lines. Treatment of GBC cell lines with demethylating agent 5-Aza- 2'-deoxycytidine enhances its expression, establishing impact of methylation on DKK3 expression. We observed low expression of DKK3 in gallbladder adenocarcinoma tumors and highly invasive GBC cell lines. We showed that overexpression of DKK3 can decrease cell invasion, proliferation, and colony forming ability of GBC cells. Our data thus demonstrated the DKK3 gene is a potential tumor suppressor gene in GBC and aberrant promoter methylation could be involved in its downregulation, which may play a role in the tumorigenesis and aggressiveness of GBC.
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Affiliation(s)
- Kirti Gondkar
- Institute of Bioinformatics, International Tech Park, Bangalore, India.,Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam, India
| | - Krishna Patel
- Institute of Bioinformatics, International Tech Park, Bangalore, India.,Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam, India
| | - Geeta V Patil Okaly
- Department of Pathology, Kidwai Memorial Institute of Oncology, Bangalore, India
| | - Bipin Nair
- Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam, India
| | - Akhilesh Pandey
- Manipal Academy of Higher Education, Manipal, India.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, United States.,Center for Individualized Medicine, Mayo Clinic, Rochester, MN, United States.,Center for Molecular Medicine, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Harsha Gowda
- Institute of Bioinformatics, International Tech Park, Bangalore, India.,Manipal Academy of Higher Education, Manipal, India
| | - Prashant Kumar
- Institute of Bioinformatics, International Tech Park, Bangalore, India.,Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam, India.,Manipal Academy of Higher Education, Manipal, India
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8
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9
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Nemunaitis JM, Brown-Glabeman U, Soares H, Belmonte J, Liem B, Nir I, Phuoc V, Gullapalli RR. Gallbladder cancer: review of a rare orphan gastrointestinal cancer with a focus on populations of New Mexico. BMC Cancer 2018; 18:665. [PMID: 29914418 PMCID: PMC6006713 DOI: 10.1186/s12885-018-4575-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/01/2018] [Indexed: 12/18/2022] Open
Abstract
Gallbladder cancer is a rare malignancy of the biliary tract with a poor prognosis, frequently presenting at an advanced stage. While rare in the United States overall, gallbladder cancer has an elevated incidence in geographically distinct locations of the globe including Chile, North India, Korea, Japan and the state of New Mexico in the United States. People with Native American ancestry have a much elevated incidence of gallbladder cancer compared to Hispanic and non-Hispanic white populations of New Mexico. Gallbladder cancer is also one of the few bi-gendered cancers with an elevated female incidence compared to men. Similar to other gastrointestinal cancers, gallbladder cancer etiology is likely multi-factorial involving a combination of genomic, immunological, and environmental factors. Understanding the interplay of these unique epidemiological factors is crucial in improving the prevention, early detection, and treatment of this lethal disease. Previous studies have failed to identify a distinct genomic mutational profile in gallbladder cancers, however, work to identify promising clinically actionable targets is this form of cancer is ongoing. Examples include, interest in the HER2/Neu signaling pathway and the recognition that chronic inflammation plays a crucial role in gallbladder cancer pathogenesis. In this review, we provide a comprehensive overview of gallbladder cancer epidemiology, risk factors, pathogenesis, and treatment with a specific focus on the rural and Native American populations of New Mexico. We conclude this review by discussing future research directions with the goal of improving clinical outcomes for patients of this lethal malignancy.
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Affiliation(s)
- Jacklyn M Nemunaitis
- Comprehensive Cancer Center, University of New Mexico, Albuquerque, NM, USA.,Department of Internal Medicine, Division of Hematology and Oncology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Ursa Brown-Glabeman
- Comprehensive Cancer Center, University of New Mexico, Albuquerque, NM, USA.,Department of Internal Medicine, Division of Hematology and Oncology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Heloisa Soares
- Comprehensive Cancer Center, University of New Mexico, Albuquerque, NM, USA.,Department of Internal Medicine, Division of Hematology and Oncology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Jessica Belmonte
- Comprehensive Cancer Center, University of New Mexico, Albuquerque, NM, USA.,Department of Internal Medicine, Division of Hematology and Oncology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Ben Liem
- Comprehensive Cancer Center, University of New Mexico, Albuquerque, NM, USA.,Department of Internal Medicine, Division of Hematology and Oncology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Itzhak Nir
- Comprehensive Cancer Center, University of New Mexico, Albuquerque, NM, USA.,Department of Surgery, Division of Surgical Oncology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Victor Phuoc
- Comprehensive Cancer Center, University of New Mexico, Albuquerque, NM, USA.,Department of Surgery, Division of Surgical Oncology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Rama R Gullapalli
- Comprehensive Cancer Center, University of New Mexico, Albuquerque, NM, USA. .,Department of Pathology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA. .,Department of Chemical and Biological Engineering, University of New Mexico, Room 333A, MSC08-4640, Albuquerque, NM, 87131, USA.
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10
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Muhammad JS, Khan MR, Ghias K. DNA methylation as an epigenetic regulator of gallbladder cancer: An overview. Int J Surg 2018; 53:178-183. [PMID: 29602013 DOI: 10.1016/j.ijsu.2018.03.053] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 03/20/2018] [Accepted: 03/21/2018] [Indexed: 12/13/2022]
Abstract
Gallbladder cancer (GBC) is a lethal health issue affecting mostly the women in their middle-age. High incidence of GBC has been reported across the world specifically in Asian countries, India and Pakistan. The exact etiology remains unknown, although several risk factors and genetic aberrations involving mutations or epigenetic changes may be involved in gallbladder carcinogenesis. This article presents a review of the published literature mainly from the year 2003 onwards. The topic of main concerns was epigenetic regulation of GBC. All relevant studies identified were included and are described according to the aforementioned subheadings. In this review, we have discussed the role of DNA methylation in GBC, clinical implication and future prospects of biomarker development for early diagnosis and therapeutic interventions.
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Affiliation(s)
- Jibran Sualeh Muhammad
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates; Department of Biological and Biomedical Sciences, The Aga Khan University, Karachi, Pakistan.
| | | | - Kulsoom Ghias
- Department of Biological and Biomedical Sciences, The Aga Khan University, Karachi, Pakistan
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11
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Sharma A, Sharma KL, Gupta A, Yadav A, Kumar A. Gallbladder cancer epidemiology, pathogenesis and molecular genetics: Recent update. World J Gastroenterol 2017; 23:3978-3998. [PMID: 28652652 PMCID: PMC5473118 DOI: 10.3748/wjg.v23.i22.3978] [Citation(s) in RCA: 226] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 02/01/2017] [Accepted: 06/01/2017] [Indexed: 02/06/2023] Open
Abstract
Gallbladder cancer is a malignancy of biliary tract which is infrequent in developed countries but common in some specific geographical regions of developing countries. Late diagnosis and deprived prognosis are major problems for treatment of gallbladder carcinoma. The dramatic associations of this orphan cancer with various genetic and environmental factors are responsible for its poorly defined pathogenesis. An understanding to the relationship between epidemiology, molecular genetics and pathogenesis of gallbladder cancer can add new insights to its undetermined pathophysiology. Present review article provides a recent update regarding epidemiology, pathogenesis, and molecular genetics of gallbladder cancer. We systematically reviewed published literature on gallbladder cancer from online search engine PubMed (http://www.ncbi.nlm.nih.gov/pubmed). Various keywords used for retrieval of articles were Gallbladder, cancer Epidemiology, molecular genetics and bullion operators like AND, OR, NOT. Cross references were manually searched from various online search engines (http://www.ncbi.nlm.nih.gov/pubmed,https://scholar.google.co.in/, http://www.medline.com/home.jsp). Most of the articles published from 1982 to 2015 in peer reviewed journals have been included in this review.
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12
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Tekcham DS, Tiwari PK. Epigenetic regulation in gallbladder cancer: Promoter methylation profiling as emergent novel biomarkers. Asia Pac J Clin Oncol 2016; 12:332-348. [PMID: 27385126 DOI: 10.1111/ajco.12507] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 03/27/2016] [Accepted: 04/05/2016] [Indexed: 12/12/2022]
Abstract
DNA methylation, once considered to rule the sex determination in Mary Lyon's hypothesis, has now reached the epicenter of human diseases, from monogenic (e.g. Prader Willi syndrome, Angelman syndromes and Beckwith-Wiedemann syndrome) to polygenic diseases, like cancer. Technological developments from gold standard to high throughput technologies have made tremendous advancement to define the epigenetic mechanism of cancer. Gallbladder cancer (GBC) is a fatal health issue affecting mostly the middle-aged women, whose survival rate is very low due to late symptomatic diagnosis. DNA methylation has become one of the key molecular mechanisms in the tumorigenesis of gallbladder. Various molecules have been reported to be epigenetically altered in GBC. In this review, we have discussed the classes of epigenetics, an overview of DNA methylation, technological approaches for its study, profile of methylated genes, their likely roles in GBC, future prospects of biomarker development and other discovery approaches, including therapeutics.
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Affiliation(s)
- Dinesh Singh Tekcham
- Centre for Genomics, Molecular and Human Genetics, Jiwaji University, Gwalior, Madhya Pradesh, India
| | - Pramod Kumar Tiwari
- Centre for Genomics, Molecular and Human Genetics, Jiwaji University, Gwalior, Madhya Pradesh, India
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13
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Tekcham DS, Tiwari PK. Non-coding RNAs as emerging molecular targets of gallbladder cancer. Gene 2016; 588:79-85. [PMID: 27131889 DOI: 10.1016/j.gene.2016.04.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Revised: 04/06/2016] [Accepted: 04/24/2016] [Indexed: 01/17/2023]
Abstract
Gallbladder cancer is one of the most common cancers of biliary tract with aggressive pathophysiology, now emerging as a global health issue. Although minority of gallbladder cancer patients could receive such curative resection due to late diagnosis, this increases the survival rate. Lack of potential target molecule (s) for early diagnosis, better prognosis and effective therapy of gallbladder cancer has triggered investigators to look for novel technological or high throughput approaches to identify potential biomarker for gallbladder cancer. Intervention of non-coding RNAs in gallbladder cancer has been revealed recently. Non-coding RNAs are now widely implicated in cancer. Recent reports have revealed association of non-coding RNAs (microRNAs or miRNAs and long non-coding RNAs or lncRNAs) with gallbladder cancer. Here, we present an updated overview on the biogenesis, mechanism of action, role of non-coding RNAs, the identified cellular functions in gallbladder tumorigenesis, their prognostic & therapeutic potentials (efficacies) and future significance in developing effective biomarker(s), in future, for gallbladder.
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Affiliation(s)
- Dinesh Singh Tekcham
- Centre for Genomics, Molecular and Human Genetics, Jiwaji University, Gwalior 474 011, MP, India
| | - Pramod Kumar Tiwari
- Centre for Genomics, Molecular and Human Genetics, Jiwaji University, Gwalior 474 011, MP, India.
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Chen H, Zhang T, Sheng Y, Zhang C, Peng Y, Wang X, Zhang C. Methylation Profiling of Multiple Tumor Suppressor Genes in Hepatocellular Carcinoma and the Epigenetic Mechanism of 3OST2 Regulation. J Cancer 2015; 6:740-9. [PMID: 26185536 PMCID: PMC4504110 DOI: 10.7150/jca.11691] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Accepted: 05/12/2015] [Indexed: 12/28/2022] Open
Abstract
DNA methylation is considered as a significant mechanism that silences tumor suppressor genes (TSGs) and could be used in the early diagnosis of cancer. Histone modifications often work together with DNA methylation; however, how these epigenetic alterations regulate TSGs remains unclear. Here, we determined the methylation status of ten TSGs (3OST2, ppENK, CHFR, LKB1, THBS1, HIC1, SLIT2, EDNRB, COX2, and CLDN7) in hepatocellular carcinoma (HCC) and corresponding noncancerous tissues. Methylation profiling revealed that four genes had very high frequencies of methylation in HCCs, but interestingly, similar high frequencies were also detected in corresponding noncancerous tissues (97.9% vs 95.8% for SLIT2, 93.8% vs 81.3% for EDNRB, 66.7% vs 85.4% for HIC1, and 56.3% vs 56.3% for ppENK, P > 0.05). Only the 3OST2 gene was frequently methylated in HCCs and there was significant difference between HCCs and corresponding noncancerous tissues (68.8% vs 37.5%, P < 0.05). 5-aza-2'-deoxycytidine (5-Aza-CdR) or trichostatin A (TSA) alone could partially reverse 3OST2 methylation, and their combination resulted in complete reversal. UHRF1 and histone H3R8me2s were both enriched on the hypermethylated 3OST2 promoter, but H3R8me2a was not. After 5-Aza-CdR or TSA treatment, the UHRF1 and H3R8me2s enrichment was decreased, while H3R8me2a enrichment increased. We demonstrated that 3OST2 methylation may play a critical role in the earliest steps of hepatocarcinogenesis and is directly regulated by UHRF1. Furthermore, H3R8me2s acted as a repressive mark, while H3R8me2a was correlated with 3OST2 transcriptional activity.
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Affiliation(s)
- Haiyan Chen
- 1. Institute of Pathology and Pathophysiology, Shandong University School of Medicine, Jinan 250012, P. R. China ; 2. Department of Pathology, Shandong Provincial Chest Hospital, Jinan 250012, P. R. China
| | - Tingguo Zhang
- 1. Institute of Pathology and Pathophysiology, Shandong University School of Medicine, Jinan 250012, P. R. China
| | - Yan Sheng
- 1. Institute of Pathology and Pathophysiology, Shandong University School of Medicine, Jinan 250012, P. R. China
| | - Cheng Zhang
- 1. Institute of Pathology and Pathophysiology, Shandong University School of Medicine, Jinan 250012, P. R. China
| | - Yunfei Peng
- 1. Institute of Pathology and Pathophysiology, Shandong University School of Medicine, Jinan 250012, P. R. China
| | - Xiao Wang
- 1. Institute of Pathology and Pathophysiology, Shandong University School of Medicine, Jinan 250012, P. R. China
| | - Cuijuan Zhang
- 1. Institute of Pathology and Pathophysiology, Shandong University School of Medicine, Jinan 250012, P. R. China
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Abstract
PURPOSE OF REVIEW Gallbladder cancer (GBC) should be considered an orphan disease in oncology and represent a unique carcinogenetic model. This review will analyse some of the current aspects of GBC. RECENT FINDINGS Chile has the highest incidence and mortality of GBC in the world. Most patients are diagnosed in advanced stages with few treatment options. During the last two decades, little progress has been made in early diagnosis and treatment. At the molecular level, recent access to next-generation sequencing and other techniques for detecting the mutations of multiple genes have made advances in this area. SUMMARY The use of therapies targeted according to the detection of specific molecular alterations is in the early stages of evaluation and could represent a significant advance in the treatment of a large number of patients from developing countries.
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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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17
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Tewari M, Agarwal A, Mishra RR, Meena RN, Shukla HS. Epigenetic changes in carcinogenesis of gallbladder. Indian J Surg Oncol 2013; 4:356-61. [PMID: 24426757 PMCID: PMC3890022 DOI: 10.1007/s13193-013-0240-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Accepted: 03/19/2013] [Indexed: 02/07/2023] Open
Abstract
Gallbladder cancer (GBC) is a lethal and a common malignancy affecting mostly females. There are restricted high incidence pockets across the world and in northern India highest incidence of GBC is reported from the Gangetic belt. The etiology of this disease remains largely unknown though several risk factors have been stated. The genetic aberrations in GBC involving mutations in tumor suppressor genes and oncogenes have been reported in literature. However, there is scarcity of data regarding epigenetic changes that may also be involved in gallbladder carcinogenesis. This review attempts to summarize our current understanding of the epigenetic changes in GBC.
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Affiliation(s)
- Mallika Tewari
- />Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221 005 U.P. India
| | - Amit Agarwal
- />Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221 005 U.P. India
| | - R. R. Mishra
- />Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - R. N. Meena
- />Department of General Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Hari S. Shukla
- />Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221 005 U.P. India
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18
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Molecular characterization of gallbladder cancer using somatic mutation profiling. Hum Pathol 2013; 45:701-8. [PMID: 24508317 PMCID: PMC4428571 DOI: 10.1016/j.humpath.2013.11.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 10/31/2013] [Accepted: 11/01/2013] [Indexed: 02/06/2023]
Abstract
Gallbladder cancer is relatively uncommon, with a high incidence in certain geographic locations, including Latin America, East and South Asia, and Eastern Europe. Molecular characterization of this disease has been limited, and targeted therapy options for advanced disease remain an open area of investigation. In the present study, surgical pathology obtained from resected gallbladder cancer cases (n = 72) was examined for the presence of targetable, somatic mutations. All cases were formalin fixed and paraffin embedded (FFPE). Two approaches were used: (a) mass spectroscopy-based profiling for 159 point ("hot spot") mutations in 33 genes commonly involved in solid tumors and (b) next-generation sequencing (NGS) platform that examined the complete coding sequence of in 182 cancer-related genes. Fifty-seven cases were analyzed for hot spot mutations; and 15, for NGS. Fourteen hot spot mutations were identified in 9 cases. Of these, KRAS mutation was significantly associated with poor survival on multivariate analysis. Other targetable mutations included PIK3CA (n = 2) and ALK (n = 1). On NGS, 26 mutations were noted in 15 cases. TP53 and PI3 kinase pathway (STK11, RICTOR, TSC2) mutations were common. One case had FGF10 amplification, whereas another had FGF3-TACC gene fusion, not previously described in gallbladder cancer. In conclusion, somatic mutation profiling using archival FFPE samples from gallbladder cancer is feasible. NGS, in particular, may be a useful platform for identifying novel mutations for targeted therapy.
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19
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Andrén-Sandberg Å. Molecular biology of gallbladder cancer: potential clinical implications. NORTH AMERICAN JOURNAL OF MEDICAL SCIENCES 2012; 4:435-41. [PMID: 23112962 PMCID: PMC3482772 DOI: 10.4103/1947-2714.101979] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Gallbladder cancer (GBC) is a common malignancy of the biliary tract and involves the changes in multiple oncogenes and multiple genetic genes. Since over the past decade there has been an advance in the knowledge of the genetic basis of cancer, mainly as a result of the rapid progression of molecular technology; however, conventional therapeutic approaches have not had much impact on the course of this aggressive neoplasm. Knowledge of the molecular biology of GBC is rapidly growing. Genetic alterations in GBC include adenosine triphosphate-binding cassette transporter ABCG8, membrane-bound enzyme ADAM-17 of multi-functional gene family, and other genes including p53, COX2, XPC, and RASSF1A. The advances in molecular biology have potential implications for the detection of this disease, using Synuclein-gamma, Syndecan-1, glycoprotein 72 (TAG-72), tumor endothelial marker 8 protein (TEM8) and TNF-alpha. The use of these molecular diagnostic methods is of clinical importance for the gene replacement therapy, genetic prodrug activation therapy, and antisense immunology technology for the treatment of malignancy. The author reviewed recent publications on PubMed, and summarized molecular biology of GBC, with an emphasis on features of potential clinical implications for diagnosis and management.
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Affiliation(s)
- Åke Andrén-Sandberg
- Department of Surgery, Karolinska Institutet at Karolinska University Hospital, Huddinge, Stockholm, Sweden
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20
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DNA promoter methylation as a diagnostic and therapeutic biomarker in gallbladder cancer. Clin Epigenetics 2012; 4:11. [PMID: 22794276 PMCID: PMC3465181 DOI: 10.1186/1868-7083-4-11] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 06/08/2012] [Indexed: 12/13/2022] Open
Abstract
Gallbladder cancer is an infrequent neoplasia with noticeable geographical variations in its incidence around the world. In Chile, it is the main cause of death owing to cancer in women over 40 years old, with mortality rates up to 16.5 per 100,000 cases. The prognosis is poor with few therapeutic options; in advanced cases there is only a 10% survival at 5 years. Several studies mention the possible role of DNA methylation in gallbladder carcinogenesis. This epigenetic modification affects tumor suppressor genes involved in regulation pathways, cell cycle control, cell adhesion and extracellular matrix degradation, in a sequential and cumulative way. Determining DNA methylation patterns would allow them to be used as biomarkers for the early detection, diagnosis, prognosis and/or therapeutic selection in gallbladder cancer.
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21
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Kim HS, Kim GY, Lim SJ, Park YK, Kim YW. Reduced expression of Raf-1 kinase inhibitory protein is a significant prognostic marker in patients with gallbladder carcinoma. Hum Pathol 2010; 41:1609-16. [PMID: 20688353 DOI: 10.1016/j.humpath.2010.04.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2010] [Revised: 04/23/2010] [Accepted: 04/30/2010] [Indexed: 11/17/2022]
Abstract
Gallbladder carcinoma is one of the most aggressive malignancies. It is usually diagnosed at an advanced stage, and the prognosis remains poor despite advances in imaging techniques and aggressive surgical treatment. Because of the lack of reliable prognostic markers, the aim of this study was to investigate the prognostic significance of Raf-1 kinase inhibitory protein expression in gallbladder carcinomas. Immunostaining for Raf-1 kinase inhibitory protein was performed on chronic cholecystitis, adenoma, carcinoma in situ, and primary and nodal metastatic gallbladder carcinoma. Raf-1 kinase inhibitory protein expression was reduced in 68.8% (11/16) and 42.3% (44/104) of nodal metastatic and primary gallbladder carcinoma cases, respectively, but in no case of carcinoma in situ, adenoma, or chronic cholecystitis. The differences in Raf-1 kinase inhibitory protein expression in gallbladder carcinoma versus nongallbladder carcinoma tissues (P < .001), and in nodal metastatic gallbladder carcinoma versus primary gallbladder carcinoma (P = .009), were statistically significant. Kaplan-Meier curves showed that patients with Raf-1 kinase inhibitory protein-negative or weakly positive gallbladder carcinoma had a significantly shorter overall survival than did patients with Raf-1 kinase inhibitory protein-positive gallbladder carcinoma (median, 14 versus 120 months; P = .011). Multivariate survival analysis showed that reduced Raf-1 kinase inhibitory protein expression was an independent prognostic predictor for overall survival (P = .020). Our results suggest that reduction in Raf-1 kinase inhibitory protein expression in gallbladder carcinoma contributes to invasion and metastasis and is a significant prognostic marker in patients with gallbladder carcinoma.
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Affiliation(s)
- Hyun Soo Kim
- Department of Pathology, Graduate School of Medicine, Kyung Hee University, Seoul 130-702, Republic of Korea
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22
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Hezel AF, Deshpande V, Zhu AX. Genetics of biliary tract cancers and emerging targeted therapies. J Clin Oncol 2010; 28:3531-40. [PMID: 20547994 PMCID: PMC2982782 DOI: 10.1200/jco.2009.27.4787] [Citation(s) in RCA: 160] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2009] [Accepted: 04/28/2010] [Indexed: 12/13/2022] Open
Abstract
Biliary tract cancers (BTC), which encompass intra- and extrahepatic cholangiocarcinomas and gallbladder carcinomas, are a genetically diverse collection of cancers. Evidence suggests distinct models of molecular and pathologic progression, and a growing body of genetics data points to a heterogeneous collection of underlying mutations in key oncogenes and tumor suppressor genes. Although tumor genetics have been used to tailor individual treatment regimens and guide clinical decision making in other cancers, these principles have not been applied in BTC. Recent clinical trials with targeted therapies seem promising, although the relationships between subsets of patients with positive responses to therapy and tumor genetics remain unexplored. Here, we summarize the molecular pathogenesis and genetics of BTCs and animal modeling and relate these to recent and ongoing clinical trials with targeted agents.
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Affiliation(s)
- Aram F Hezel
- James P Wilmot Cancer Center, University of Rochester School of Medicine, Rochester, NY 14642, USA.
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23
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Abstract
Gallbladder cancer (GBC) shows a marked geographical variation in its incidence, with the highest figures being seen in India and Chile and relatively low levels in many Western countries. Risk factors for its development include the presence of gallstones, infection and the presence of an anomalous pancreatobiliary ductal junction. It can arise from either a pathway involving metaplasia or dysplasia or one in which there is a pre-existing adenoma. The former is the more common and, because it is often not associated with a macroscopically recognizable lesion, leads to the recommendation that all gallbladders need to be examined microscopically. Accurate staging of invasive cancers is essential to determine prognosis and treatment, and this requires extensive tumour sampling. A number of genetic alterations have been identified in the preinvasive and invasive stages of GBC and they support the morphological evidence of there being two pathways by which tumours develop. Some of these genetic changes are associated with particular risk factors. For example, cases with anomalous pancreatobiliary ductal junction show a higher frequency of K-ras mutations. Some changes are associated with differences in prognosis. For example, cancers without expression of p21 but with expression for p27 have a better prognosis, whereas those that express c-erb-B2 have a worse one. Work has also been done on identifying clinical, imaging and other factors that indicate that patients have a higher risk of having GBC. This is particularly important in high-incidence areas in which GBC is a significant public health problem.
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Affiliation(s)
- Robert David Goldin
- Department of Histopathology, Imperial College Faculty of Medicine at St Mary's, London, UK.
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24
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[Promoter hypermethylation gene patterns in gynecological tumors]. Med Clin (Barc) 2009; 132:371-6. [PMID: 19268989 DOI: 10.1016/j.medcli.2008.05.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Accepted: 05/15/2008] [Indexed: 11/21/2022]
Abstract
BACKGROUND AND OBJECTIVE Gene silencing mediated by the aberrant methylation of the promoter region of DNA is involved in the inactivation of genes implicated in various metabolic pathways. Such a gene hypermethylation has become a useful molecular marker for the diagnosis, treatment and follow-up of cancer patients. Our objective is to analyze the patterns of gene hypermethylation in patients with gynecological tumors. PATIENTS AND METHODS We selected 115 patients with gynecological cancers: 22 ovarian; 13 endometrial, 11 cervical-uterine and 69 breast cancers. By testing methylation-specific PCR, we studied the methylation status of genes CDNK2A (p16), APC1A, FHIT, CDH1 and hMLH1. RESULTS The frequencies of gene methylation in genes p16, APC1A, FHIT, hMLH1 and CDH1 were 29.2%, 34%, 60.4%, 10.9% and 79.8%, respectively. 70% of cases showed at least two methylated genes, which means a rate of methylation >0.4. The lowest frequency of methylation was seen in ovarian cancer, while the highest one was observed in endometrial cancer. CONCLUSIONS The results indicate that the aberrant methylation of the promoter region is an important event in carcinogenesis of gynecological tumors and that the pattern of gene methylation is associated with the nature of the tumor. These particular characteristics can deliver relevant information on the major metabolic pathways altered in each tumor type. In addition to complementary studies (ie, loss of expression and/or function), this represents a clinical tool for the proper management of the disease.
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García P, Manterola C, Araya JC, Villaseca M, Guzmán P, Sanhueza A, Thomas M, Alvarez H, Roa JC. Promoter methylation profile in preneoplastic and neoplastic gallbladder lesions. Mol Carcinog 2009; 48:79-89. [DOI: 10.1002/mc.20457] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Thomas MB. Biological characteristics of cancers in the gallbladder and biliary tract and targeted therapy. Crit Rev Oncol Hematol 2007; 61:44-51. [PMID: 17164111 DOI: 10.1016/j.critrevonc.2006.07.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2005] [Revised: 07/28/2006] [Accepted: 07/28/2006] [Indexed: 12/22/2022] Open
Abstract
Adenocarcinomas of the gallbladder (GBC) and bile ducts (cholangiocarcinoma) (combined as biliary tract cancers, BTC) are uncommon tumors in the United States, but are endemic in parts of South America and Asia. BTC are aggressive tumors with poor survival. Published response rates to chemotherapy are less than 30% and no survival benefit has been demonstrated from palliative systemic therapy. Improved understanding of the biological characteristics and molecular carcinogenic mechanisms of these malignancies may lead to improved therapeutic regimens for patients.
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Affiliation(s)
- Melanie B Thomas
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Unit 426, Houston, TX 77030, USA.
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