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Pasqualucci L, Klein U. NF-κB Mutations in Germinal Center B-Cell Lymphomas: Relation to NF-κB Function in Normal B Cells. Biomedicines 2022; 10:2450. [PMID: 36289712 PMCID: PMC9599362 DOI: 10.3390/biomedicines10102450] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/16/2022] [Accepted: 09/21/2022] [Indexed: 11/16/2022] Open
Abstract
Most B cell lymphomas arise from the oncogenic transformation of B cells that have undergone the germinal center (GC) reaction of the T cell-dependent immune response, where high-affinity memory B cells and plasma cells are generated. The high proliferation of GC B cells coupled with occasional errors in the DNA-modifying processes of somatic hypermutation and class switch recombination put the cell at a risk to obtain transforming genetic aberrations, which may activate proto-oncogenes or inactivate tumour suppressor genes. Several subtypes of GC lymphomas harbor genetic mutations leading to constitutive, aberrant activation of the nuclear factor-κB (NF-κB) signaling pathway. In normal B cells, NF-κB has crucial biological roles in development and physiology. GC lymphomas highjack these activities to promote tumour-cell growth and survival. It has become increasingly clear that the separate canonical and non-canonical routes of the NF-κB pathway and the five downstream NF-κB transcription factors have distinct functions in the successive stages of GC B-cell development. These findings may have direct implications for understanding how aberrant NF-κB activation promotes the genesis of various GC lymphomas corresponding to the developmentally distinct GC B-cell subsets. The knowledge arising from these studies may be explored for the development of precision medicine approaches aimed at more effective treatments of the corresponding tumours with specific NF-κB inhibitors, thus reducing systemic toxicity. We here provide an overview on the patterns of genetic NF-κB mutations encountered in the various GC lymphomas and discuss the consequences of aberrant NF-κB activation in those malignancies as related to the biology of NF-κB in their putative normal cellular counterparts.
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Affiliation(s)
- Laura Pasqualucci
- Institute for Cancer Genetics, Department of Pathology & Cell Biology, The Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY 10032, USA
| | - Ulf Klein
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James’s, University of Leeds, Leeds LS9 7TF, UK
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2
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Heesterbeek CJ, Aukema SM, Galjaard RJH, Boon EMJ, Srebniak MI, Bouman K, Faas BHW, Govaerts LCP, Hoffer MJV, den Hollander NS, Lichtenbelt KD, van Maarle MC, van Prooyen Schuurman L, van Rij MC, Schuring-Blom GH, Stevens SJC, Tan-Sindhunata G, Zamani Esteki M, de Die-Smulders CEM, Tjan-Heijnen VCG, Henneman L, Sistermans EA, Macville MVE. Noninvasive Prenatal Test Results Indicative of Maternal Malignancies: A Nationwide Genetic and Clinical Follow-Up Study. J Clin Oncol 2022; 40:2426-2435. [PMID: 35394817 DOI: 10.1200/jco.21.02260] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
PURPOSE Noninvasive prenatal testing (NIPT) for fetal aneuploidy screening using cell-free DNA derived from maternal plasma can incidentally raise suspicion for cancer. Diagnostic routing after malignancy suspicious-NIPT faces many challenges. Here, we detail malignancy suspicious-NIPT cases, and describe the clinical characteristics, chromosomal aberrations, and diagnostic routing of the patients with a confirmed malignancy. Clinical lessons can be learned from our experience. METHODS Patients with NIPT results indicative of a malignancy referred for tumor screening between April 2017 and April 2020 were retrospectively included from a Dutch nationwide NIPT implementation study, TRIDENT-2. NIPT profiles from patients with confirmed malignancies were reviewed, and the pattern of chromosomal aberrations related to tumor type was analyzed. We evaluated the diagnostic contribution of clinical and genetic examinations. RESULTS Malignancy suspicious-NIPT results were reported in 0.03% after genome-wide NIPT, and malignancies confirmed in 16 patients (16/48, 33.3%). Multiple chromosomal aberrations were seen in 23 of 48 patients with genome-wide NIPT, and a malignancy was confirmed in 16 patients (16/23, 69.6%). After targeted NIPT, 0.005% malignancy suspicious-NIPT results were reported, in 2/3 patients a malignancy was confirmed. Different tumor types and stages were diagnosed, predominantly hematologic malignancies (12/18). NIPT data showed recurrent gains and losses in primary mediastinal B-cell lymphomas and classic Hodgkin lymphomas. Magnetic resonance imaging and computed tomography were most informative in diagnosing the malignancy. CONCLUSION In 231,896 pregnant women, a low percentage (0.02%) of NIPT results were assessed as indicative of a maternal malignancy. However, when multiple chromosomal aberrations were found, the risk of a confirmed malignancy was considerably high. Referral for extensive oncologic examination is recommended, and may be guided by tumor-specific hallmarks in the NIPT profile.
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Affiliation(s)
- Catharina J Heesterbeek
- Department of Medical Oncology, GROW School for Oncology and Reproduction, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Sietse M Aukema
- Department of Clinical Genetics, GROW School for Oncology and Reproduction, Maastricht University Medical Center, Maastricht, the Netherlands
| | | | - Elles M J Boon
- Department of Human Genetics, and Amsterdam Reproduction & Development Research Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | | | - Katelijne Bouman
- Department of Human Genetics, and Amsterdam Reproduction & Development Research Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Brigitte H W Faas
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Mariëtte J V Hoffer
- Department of Clinical Genetics, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Klaske D Lichtenbelt
- Department of Genetics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Merel C van Maarle
- Department of Genetics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Lisanne van Prooyen Schuurman
- Department of Clinical Genetics, Erasmus Medical Center, Rotterdam, the Netherlands.,Department of Human Genetics, and Amsterdam Reproduction & Development Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Maartje C van Rij
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Servi J C Stevens
- Department of Clinical Genetics, GROW School for Oncology and Reproduction, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Gita Tan-Sindhunata
- Department of Human Genetics, and Amsterdam Reproduction & Development Research Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Masoud Zamani Esteki
- Department of Clinical Genetics, GROW School for Oncology and Reproduction, Maastricht University Medical Center, Maastricht, the Netherlands.,Department of Public Health, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Christine E M de Die-Smulders
- Department of Clinical Genetics, GROW School for Oncology and Reproduction, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Vivianne C G Tjan-Heijnen
- Department of Medical Oncology, GROW School for Oncology and Reproduction, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Lidewij Henneman
- Department of Human Genetics, and Amsterdam Reproduction & Development Research Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Erik A Sistermans
- Department of Human Genetics, and Amsterdam Reproduction & Development Research Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Merryn V E Macville
- Department of Clinical Genetics, GROW School for Oncology and Reproduction, Maastricht University Medical Center, Maastricht, the Netherlands
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3
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Ondrejka SL, Ott G. How I Diagnose Primary Mediastinal (Thymic) Large B-Cell Lymphoma. Am J Clin Pathol 2021; 156:497-512. [PMID: 34398178 DOI: 10.1093/ajcp/aqab122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/28/2021] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES Primary mediastinal (thymic) large B-cell lymphoma (PMBL) is an uncommon large B-cell neoplasm recognized by the World Health Organization as a distinct entity on the basis of its unique clinical features, histogenesis, phenotype, and pathogenetic mechanisms. The diagnosis of PMBL can be challenging because of features that may overlap with other (Hodgkin and non-Hodgkin) lymphoma types. This review describes our approach to the diagnosis of PMBL. METHODS Two cases are presented to illustrate how we diagnose PMBL and separate PMBL from related histologic and biological mimickers, such as Hodgkin lymphoma and gray zone lymphoma. RESULTS A diagnosis of PMBL requires correlation of morphology and immunophenotype with clinical and staging data. Gene expression analysis is not typically performed in clinical labs but has expanded our understanding of the functional pathways underlying this disease and helped identify biomarkers that can be translated to diagnostic practice and possibly to future therapeutic options. CONCLUSIONS PMBL and closely related entities can pose diagnostic challenges. It is important to understand the borders between PMBL and other closely related lymphoma types so that patients receive successful primary treatment with curative intent.
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Affiliation(s)
- Sarah L Ondrejka
- Department of Laboratory Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - German Ott
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Stuttgart, Germany
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4
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Benkli CY, Marcogliese AN, Agrusa JE, Adesina AM, Weiner HL, Fisher KE, Curry CV. Clinical genomic profiling of novel grey zone lymphoma paired lesions with sequential central nervous system involvement in two adolescent patients. Haematologica 2021; 106:2533-2536. [PMID: 34162180 PMCID: PMC8409016 DOI: 10.3324/haematol.2021.278936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Indexed: 11/12/2022] Open
Affiliation(s)
- Cagla Y Benkli
- Department of Pathology and Immunology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX
| | - Andrea N Marcogliese
- Department of Pathology and Immunology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA; Department of Pediatrics, Baylor College of Medicine and Texas Children's Cancer Center, Houston, TX
| | - Jennifer E Agrusa
- Department of Pediatrics, Baylor College of Medicine and Texas Children's Cancer Center, Houston, TX
| | - Adekunle M Adesina
- Department of Pathology and Immunology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA; Department of Pediatrics, Baylor College of Medicine and Texas Children's Cancer Center, Houston, TX
| | - Howard L Weiner
- Division of Pediatric Neurosurgery, Department of Surgery, Baylor College of Medicine and Texas Children's Hospital, Houston, TX
| | - Kevin E Fisher
- Department of Pathology and Immunology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX
| | - Choladda V Curry
- Department of Pathology and Immunology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX.
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5
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Cordas Dos Santos DM, Eilers J, Sosa Vizcaino A, Orlova E, Zimmermann M, Stanulla M, Schrappe M, Börner K, Grimm D, Muckenthaler MU, Kulozik AE, Kunz JB. MAP3K7 is recurrently deleted in pediatric T-lymphoblastic leukemia and affects cell proliferation independently of NF-κB. BMC Cancer 2018; 18:663. [PMID: 29914415 PMCID: PMC6006985 DOI: 10.1186/s12885-018-4525-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 05/18/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Deletions of 6q15-16.1 are recurrently found in pediatric T-cell acute lymphoblastic leukemia (T-ALL). This chromosomal region includes the mitogen-activated protein kinase kinase kinase 7 (MAP3K7) gene which has a crucial role in innate immune signaling and was observed to be functionally and prognostically relevant in different cancer entities. Therefore, we correlated the presence of MAP3K7 deletions with clinical parameters in a cohort of 327 pediatric T-ALL patients and investigated the function of MAP3K7 in the T-ALL cell lines CCRF-CEM, Jurkat and MOLT-4. METHODS MAP3K7 deletions were detected by multiplex ligation-dependent probe amplification (MLPA). T-ALL cell lines were transduced with adeno-associated virus (AAV) vectors expressing anti-MAP3K7 shRNA or a non-silencing shRNA together with a GFP reporter. Transduction efficiency was measured by flow cytometry and depletion efficiency by RT-PCR and Western blots. Induction of apoptosis was measured by flow cytometry after staining with PE-conjugated Annexin V. In order to assess the contribution of NF-κB signaling to the effects of MAP3K7 depletion, cells were treated with TNF-α and cell lysates analyzed for components of the NF-κB pathway by Western blotting and for expression of the NF-κB target genes BCL2, CMYC, FAS, PTEN and TNF-α by RT-PCR. RESULTS MAP3K7 is deleted in approximately 10% and point-mutated in approximately 1% of children with T-ALL. In 32 of 33 leukemias the deletion of MAP3K7 also included the adjacent CASP8AP2 gene. MAP3K7 deletions were associated with the occurrence of SIL-TAL1 fusions and a mature immunophenotype, but not with response to treatment and outcome. Depletion of MAP3K7 expression in T-ALL cell lines by shRNAs slowed down proliferation and induced apoptosis, but neither changed protein levels of components of NF-κB signaling nor NF-κB target gene expression after stimulation with TNF-α. CONCLUSIONS This study revealed that the recurrent deletion of MAP3K7/CASP8AP2 is associated with SIL-TAL1 fusions and a mature immunophenotype, but not with response to treatment and risk of relapse. Homozygous deletions of MAP3K7 were not observed, and efficient depletion of MAP3K7 interfered with viability of T-ALL cells, indicating that a residual expression of MAP3K7 is indispensable for T-lymphoblasts.
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Affiliation(s)
- David M Cordas Dos Santos
- Department of Pediatric Oncology, Hematology, Immunology and Pulmonology, Heidelberg University Children's Hospital, Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), Heidelberg, Germany
| | - Juliane Eilers
- Department of Pediatric Oncology, Hematology, Immunology and Pulmonology, Heidelberg University Children's Hospital, Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), Heidelberg, Germany
| | - Alfonso Sosa Vizcaino
- Department of Pediatric Oncology, Hematology, Immunology and Pulmonology, Heidelberg University Children's Hospital, Heidelberg, Germany
| | - Elena Orlova
- Department of Pediatric Oncology, Hematology, Immunology and Pulmonology, Heidelberg University Children's Hospital, Heidelberg, Germany
| | - Martin Zimmermann
- Department of Pediatric Hematology and Oncology, MH Hannover, Hannover, Germany
| | - Martin Stanulla
- Department of Pediatric Hematology and Oncology, MH Hannover, Hannover, Germany
| | - Martin Schrappe
- Department of Pediatrics, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Kathleen Börner
- Department of Infectious Diseases, Virology, Heidelberg University Hospital, Heidelberg, Germany.,German Center for Infection Research (DZIF), Partner Site Heidelberg, Heidelberg, Germany.,BioQuant Center, Heidelberg University, Heidelberg, Germany
| | - Dirk Grimm
- Department of Infectious Diseases, Virology, Heidelberg University Hospital, Heidelberg, Germany.,German Center for Infection Research (DZIF), Partner Site Heidelberg, Heidelberg, Germany.,BioQuant Center, Heidelberg University, Heidelberg, Germany.,Cluster of Excellence CellNetworks, Heidelberg University, Heidelberg, Germany
| | - Martina U Muckenthaler
- Department of Pediatric Oncology, Hematology, Immunology and Pulmonology, Heidelberg University Children's Hospital, Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), Heidelberg, Germany
| | - Andreas E Kulozik
- Department of Pediatric Oncology, Hematology, Immunology and Pulmonology, Heidelberg University Children's Hospital, Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), Heidelberg, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Joachim B Kunz
- Department of Pediatric Oncology, Hematology, Immunology and Pulmonology, Heidelberg University Children's Hospital, Heidelberg, Germany. .,Molecular Medicine Partnership Unit (MMPU), Heidelberg, Germany. .,German Cancer Consortium (DKTK), Heidelberg, Germany.
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6
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Dai H, Ehrentraut S, Nagel S, Eberth S, Pommerenke C, Dirks WG, Geffers R, Kalavalapalli S, Kaufmann M, Meyer C, Faehnrich S, Chen S, Drexler HG, MacLeod RAF. Genomic Landscape of Primary Mediastinal B-Cell Lymphoma Cell Lines. PLoS One 2015; 10:e0139663. [PMID: 26599546 PMCID: PMC4657880 DOI: 10.1371/journal.pone.0139663] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 09/15/2015] [Indexed: 12/02/2022] Open
Abstract
Primary mediastinal B-Cell lymphoma (PMBL) is a recently defined entity comprising ~2–10% non-Hodgkin lymphomas (NHL). Unlike most NHL subtypes, PMBL lacks recurrent gene rearrangements to serve as biomarkers or betray target genes. While druggable, late chemotherapeutic complications warrant the search for new targets and models. Well characterized tumor cell lines provide unlimited material to serve as preclinical resources for verifiable analyses directed at the discovery of new biomarkers and pathological targets using high throughput microarray technologies. The same cells may then be used to seek intelligent therapies directed at clinically validated targets. Four cell lines have emerged as potential PMBL models: FARAGE, KARPAS-1106P, MEDB-1 and U-2940. Transcriptionally, PMBL cell lines cluster near c(lassical)-HL and B-NHL examples showing they are related but separate entities. Here we document genomic alterations therein, by cytogenetics and high density oligonucleotide/SNP microarrays and parse their impact by integrated global expression profiling. PMBL cell lines were distinguished by moderate chromosome rearrangement levels undercutting cHL, while lacking oncogene translocations seen in B-NHL. In total 61 deletions were shared by two or more cell lines, together with 12 amplifications (≥4x) and 72 homozygous regions. Integrated genomic and transcriptional profiling showed deletions to be the most important class of chromosome rearrangement. Lesions were mapped to several loci associated with PMBL, e.g. 2p15 (REL/COMMD1), 9p24 (JAK2, CD274), 16p13 (SOCS1, LITAF, CIITA); plus new or tenuously associated loci: 2p16 (MSH6), 6q23 (TNFAIP3), 9p22 (CDKN2A/B), 20p12 (PTPN1). Discrete homozygous regions sometimes substituted focal deletions accompanied by gene silencing implying a role for epigenetic or mutational inactivation. Genomic amplifications increasing gene expression or gene-activating rearrangements were respectively rare or absent. Our findings highlight biallelic deletions as a major class of chromosomal lesion in PMBL cell lines, while endorsing the latter as preclinical models for hunting and testing new biomarkers and actionable targets.
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Affiliation(s)
- Haiping Dai
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
- Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Stefan Ehrentraut
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Stefan Nagel
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Sonja Eberth
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Claudia Pommerenke
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Wilhelm G. Dirks
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Robert Geffers
- Department of Genome Analysis, HZI, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | | | - Maren Kaufmann
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Corrina Meyer
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Silke Faehnrich
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Suning Chen
- Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Hans G. Drexler
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Roderick A. F. MacLeod
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
- * E-mail:
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7
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Twa DDW, Steidl C. Structural genomic alterations in primary mediastinal large B-cell lymphoma. Leuk Lymphoma 2015; 56:2239-50. [DOI: 10.3109/10428194.2014.985673] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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8
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Drexler HG, Ehrentraut S, Nagel S, Eberth S, MacLeod RAF. Malignant hematopoietic cell lines: in vitro models for the study of primary mediastinal B-cell lymphomas. Leuk Res 2014; 39:18-29. [PMID: 25480038 DOI: 10.1016/j.leukres.2014.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/30/2014] [Accepted: 11/05/2014] [Indexed: 11/27/2022]
Abstract
Primary mediastinal B-cell lymphoma (PMBL) is a highly aggressive disease with a unique set of biological, clinical, morphological, immunological and in particular genetic features that in the molecular era of defining lymphomas clearly distinguishes it as a separate entity from other diffuse large B-cell lymphomas (DLBCL). A precise molecular diagnosis of PMBL can be achieved by gene expression profiling. The signature gene expression profile of PMBL is more closely related to classic Hodgkin lymphoma (cHL) than to other DLBCL subgroups. A number of common genetic aberrations in PMBL and cHL further underscore their close relationship. To investigate the pathobiology of lymphomas in depth, many groups have turned to cell lines that are suitable models facilitating molecular studies and providing unique insights. For the purposes of the current perspective, we focus on four bona fide PMBL-derived cell lines (FARAGE, KARPAS-1106, MEDB-1, U-2940) that we identified and validated as such through hierarchical cluster analysis among a large collection of leukemia-lymphoma cell lines. These gene expression profiles showed that the four PMBL cell lines represent a distinct entity and are most similar to cHL cell lines, confirming derivation from a related cell type. A validated cell line resource for PMBL should assist those seeking druggable targets in this entity. This review aims to provide a comprehensive overview of the currently available cellular models for the study of PMBL.
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Affiliation(s)
- Hans G Drexler
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Dept. Human and Animal Cell Lines, Braunschweig, Germany.
| | - Stefan Ehrentraut
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Dept. Human and Animal Cell Lines, Braunschweig, Germany
| | - Stefan Nagel
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Dept. Human and Animal Cell Lines, Braunschweig, Germany
| | - Sonja Eberth
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Dept. Human and Animal Cell Lines, Braunschweig, Germany
| | - Roderick A F MacLeod
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Dept. Human and Animal Cell Lines, Braunschweig, Germany
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9
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Recurrent somatic mutations of PTPN1 in primary mediastinal B cell lymphoma and Hodgkin lymphoma. Nat Genet 2014; 46:329-35. [PMID: 24531327 DOI: 10.1038/ng.2900] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 01/24/2014] [Indexed: 12/20/2022]
Abstract
Classical Hodgkin lymphoma and primary mediastinal B cell lymphoma (PMBCL) are related lymphomas sharing pathological, molecular and clinical characteristics. Here we discovered by whole-genome and whole-transcriptome sequencing recurrent somatic coding-sequence mutations in the PTPN1 gene. Mutations were found in 6 of 30 (20%) Hodgkin lymphoma cases, in 6 of 9 (67%) Hodgkin lymphoma-derived cell lines, in 17 of 77 (22%) PMBCL cases and in 1 of 3 (33%) PMBCL-derived cell lines, consisting of nonsense, missense and frameshift mutations. We demonstrate that PTPN1 mutations lead to reduced phosphatase activity and increased phosphorylation of JAK-STAT pathway members. Moreover, silencing of PTPN1 by RNA interference in Hodgkin lymphoma cell line KM-H2 resulted in hyperphosphorylation and overexpression of downstream oncogenic targets. Our data establish PTPN1 mutations as new drivers in lymphomagenesis.
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10
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Mechanisms and consequences of constitutive NF-κB activation in B-cell lymphoid malignancies. Oncogene 2014; 33:5655-65. [DOI: 10.1038/onc.2013.565] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 12/09/2013] [Accepted: 12/09/2013] [Indexed: 12/13/2022]
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11
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Wang Z, Li L, Su X, Gao Z, Srivastava G, Murray PG, Ambinder R, Tao Q. Epigenetic silencing of the 3p22 tumor suppressor DLEC1 by promoter CpG methylation in non-Hodgkin and Hodgkin lymphomas. J Transl Med 2012; 10:209. [PMID: 23050586 PMCID: PMC3540012 DOI: 10.1186/1479-5876-10-209] [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: 07/22/2012] [Accepted: 10/04/2012] [Indexed: 12/25/2022] Open
Abstract
Background Inactivaion of tumor suppressor genes (TSGs) by promoter CpG methylation frequently occurs in tumorigenesis, even in the early stages, contributing to the initiation and progression of human cancers. Deleted in lung and esophageal cancer 1 (DLEC1), located at the 3p22-21.3 TSG cluster, has been identified frequently silenced by promoter CpG methylation in multiple carcinomas, however, no study has been performed for lymphomas yet. Methods We examined the expression of DLEC1 by semi-quantitative reverse transcription (RT)-PCR, and evaluated the promoter methylation of DLEC1 by methylation-specific PCR (MSP) and bisulfite genomic sequencing (BGS) in common lymphoma cell lines and tumors. Results Here we report that DLEC1 is readily expressed in normal lymphoid tissues including lymph nodes and PBMCs, but reduced or silenced in 70% (16/23) of non-Hodgkin and Hodgkin lymphoma cell lines, including 2/6 diffuse large B-cell (DLBCL), 1/2 peripheral T cell lymphomas, 5/5 Burkitt, 6/7 Hodgkin and 2/3 nasal killer (NK)/T-cell lymphoma cell lines. Promoter CpG methylation was frequently detected in 80% (20/25) of lymphoma cell lines and correlated with DLEC1 downregulation/silencing. Pharmacologic demethylation reversed DLEC1 expression in lymphoma cell lines along with concomitant promoter demethylation. DLEC1 methylation was also frequently detected in 32 out of 58 (55%) different types of lymphoma tissues, but not in normal lymph nodes. Furthermore, DLEC1 was specifically methylated in the sera of 3/13 (23%) Hodgkin lymphoma patients. Conclusions Thus, methylation-mediated silencing of DLEC1 plays an important role in multiple lymphomagenesis, and may serve as a non-invasive tumor marker for lymphoma diagnosis.
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Affiliation(s)
- Zhaohui Wang
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences-CUHK, Shenzhen, China
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12
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López-Nieva P, Vaquero C, Fernández-Navarro P, González-Sánchez L, Villa-Morales M, Santos J, Esteller M, Fernández-Piqueras J. EPHA7, a new target gene for 6q deletion in T-cell lymphoblastic lymphomas. Carcinogenesis 2012; 33:452-8. [PMID: 22114070 DOI: 10.1093/carcin/bgr271] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Cryptic deletions at chromosome 6q are common cytogenetic abnormalities in T-cell lymphoblastic leukemia/lymphoma (T-LBL), but the target genes have not been formally identified. Our results build on detection of specific chromosomal losses in a mouse model of γ-radiation-induced T-LBLs and provide interesting clues for new putative susceptibility genes in a region orthologous to human 6q15-6q16.3. Among these, Epha7 emerges as a bona fide candidate tumor suppressor gene because it is inactivated in practically all the T-LBLs analyzed (100% in mouse and 95.23% in human). We provide evidence showing that Epha7 downregulation may occur, at least in part, by loss of heterozygosity (19.35% in mouse and 12.5% in human) or promoter hypermethylation (51.61% in mouse and 43.75% in human) or a combination of both mechanisms (12.90% in mouse and 6.25% in human). These results indicate that EPHA7 might be considered a new tumor suppressor gene for 6q deletions in T-LBLs. Notably, this gene is located in 6q16.1 proximal to GRIK2 and CASP8AP2, other candidate genes identified in this region. Thus, del6q seems to be a complex region where inactivation of multiple genes may cooperatively contribute to the onset of T-cell lymphomas.
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MESH Headings
- Animals
- Calcium-Binding Proteins/genetics
- Cell Line, Tumor
- Chromosome Deletion
- Chromosomes, Human, Pair 4
- Chromosomes, Human, Pair 6/genetics
- DNA Methylation
- Down-Regulation
- Female
- Genes, Tumor Suppressor
- Humans
- Jurkat Cells
- Leukemia, T-Cell/genetics
- Leukemia-Lymphoma, Adult T-Cell/genetics
- Loss of Heterozygosity
- Lymphoma, T-Cell/genetics
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Promoter Regions, Genetic
- Receptor, EphA7/genetics
- Receptors, Kainic Acid/genetics
- Sequence Deletion
- GluK2 Kainate Receptor
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Affiliation(s)
- Pilar López-Nieva
- Departmento Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain
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13
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Schneider C, Pasqualucci L, Dalla-Favera R. Molecular pathogenesis of diffuse large B-cell lymphoma. Semin Diagn Pathol 2011; 28:167-77. [PMID: 21842702 DOI: 10.1053/j.semdp.2011.04.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In past years, substantial insight regarding the pathogenesis of diffuse large B-cell lymphoma has been obtained. Particularly, based on gene expression profile analysis, this disease can be classified into distinct phenotypic subgroups and specific transcriptional programs have been identified. New technologies like next-generation whole genome/exome sequencing and genome-wide single nucleotide polymorphism array analysis have revealed novel lesions involved in the pathogenesis of this disease. This review focuses on the diversity of genetic lesions identified in the different subtypes of diffuse large B-cell lymphoma.
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Affiliation(s)
- Christof Schneider
- Institute for Cancer Genetics and the Herbert Irving Comprehensive Cancer Center, and Department of Clinical Pathology and Cell Biology, Columbia University, New York, New York 10032, USA
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14
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Abstract
Primary mediastinal large B-cell lymphoma (PMBCL) is a recognized non-Hodgkin lymphoma entity with unique pathologic, clinical, and molecular characteristics distinct from those of other diffuse large B-cell lymphomas. Immunohistochemical characterization and molecular studies strongly suggest that PMBCL is of germinal center or postgerminal center origin. Pivotal gene expression profiling work defined major deregulated pathway activities that overlap with Hodgkin lymphoma and prompted a more detailed analysis of candidate genes. In particular, the nuclear factor-κB and the Janus Kinase-Signal Transducer and Activator of Transcription signaling pathways are targeted by multiple genomic hits, and constitutive activity of both pathways can be considered molecular hallmark alterations of PMBCL. Moreover, data are emerging giving unique insight into remodeling of the epigenome that affects transcriptional regulation of a multitude of genes. More recently, the tumor microenvironment of PMBCL has shifted into focus based on a number of gene perturbations altering expression of surface molecules that contribute to immune escape. These findings highlight the importance of immune privilege in the pathogenesis of PMBCL and suggest that disrupting crosstalk between the tumor cells and the microenvironment might be a rational new therapeutic target in conjunction with traditional treatment strategies.
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Mason JM, Sekiguchi JM. Snm1B/Apollo functions in the Fanconi anemia pathway in response to DNA interstrand crosslinks. Hum Mol Genet 2011; 20:2549-59. [PMID: 21478198 DOI: 10.1093/hmg/ddr153] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Fanconi anemia (FA) is an inherited chromosomal instability disorder characterized by childhood aplastic anemia, developmental abnormalities and cancer predisposition. One of the hallmark phenotypes of FA is cellular hypersensitivity to agents that induce DNA interstrand crosslinks (ICLs), such as mitomycin C (MMC). FA is caused by mutation in at least 14 genes which function in the resolution of ICLs during replication. The FA proteins act within the context of a protein network in coordination with multiple repair factors that function in distinct pathways. SNM1B/Apollo is a member of metallo-β-lactamase/βCASP family of nucleases and has been demonstrated to function in ICL repair. However, the relationship between SNM1B and the FA protein network is not known. In the current study, we establish that SNM1B functions epistatically to the central FA factor, FANCD2, in cellular survival after ICL damage and homology-directed repair of DNA double-strand breaks. We also demonstrate that MMC-induced chromosomal anomalies are increased in SNM1B-depleted cells, and this phenotype is not further exacerbated upon depletion of either FANCD2 or another key FA protein, FANCI. Furthermore, we find that SNM1B is required for proper localization of critical repair factors, including FANCD2, BRCA1 and RAD51, to MMC-induced subnuclear foci. Our findings demonstrate that SNM1B functions within the FA pathway during the repair of ICL damage.
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Affiliation(s)
- Jennifer M Mason
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI 48109, USA
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16
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Orlov NV, Chen WW, Eckley DM, Macura TJ, Shamir L, Jaffe ES, Goldberg IG. Automatic classification of lymphoma images with transform-based global features. ACTA ACUST UNITED AC 2010; 14:1003-13. [PMID: 20659835 DOI: 10.1109/titb.2010.2050695] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We propose a report on automatic classification of three common types of malignant lymphoma: chronic lymphocytic leukemia, follicular lymphoma, and mantle cell lymphoma. The goal was to find patterns indicative of lymphoma malignancies and allowing classifying these malignancies by type. We used a computer vision approach for quantitative characterization of image content. A unique two-stage approach was employed in this study. At the outer level, raw pixels were transformed with a set of transforms into spectral planes. Simple (Fourier, Chebyshev, and wavelets) and compound transforms (Chebyshev of Fourier and wavelets of Fourier) were computed. Raw pixels and spectral planes were then routed to the second stage (the inner level). At the inner level, the set of multipurpose global features was computed on each spectral plane by the same feature bank. All computed features were fused into a single feature vector. The specimens were stained with hematoxylin (H) and eosin (E) stains. Several color spaces were used: RGB, gray, CIE-L*a*b*, and also the specific stain-attributed H&E space, and experiments on image classification were carried out for these sets. The best signal (98%-99% on earlier unseen images) was found for the HE, H, and E channels of the H&E data set.
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Affiliation(s)
- Nikita V Orlov
- National Institute on Aging, NIH, Baltimore, MD 21224, USA.
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17
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Rinaldi A, Capello D, Scandurra M, Greiner TC, Chan WC, Bhagat G, Rossi D, Morra E, Paulli M, Rambaldi A, Rancoita PMV, Inghirami G, Ponzoni M, Moreno SM, Piris MA, Mian M, Chigrinova E, Zucca E, Favera RD, Gaidano G, Kwee I, Bertoni F. Single nucleotide polymorphism-arrays provide new insights in the pathogenesis of post-transplant diffuse large B-cell lymphoma. Br J Haematol 2010; 149:569-77. [PMID: 20230398 DOI: 10.1111/j.1365-2141.2010.08125.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Post-transplant lymphoproliferative disorders (PTLD) are complications of solid organ transplantation associated with severe morbidity and mortality. Diffuse large B-cell lymphoma (DLBCL) represents the most common form of monomorphic PTLD. We studied 44 cases of post-transplant DLBCL (PT-DLBCL) with high-density genome wide single nucleotide polymorphism-based arrays, and compared them with 105 cases of immunocompetent DLBCL (IC-DLBCL) and 28 cases of Human Immunodeficiency Virus-associated DLBCL (HIV-DLBCL). PT-DLBCL showed a genomic profile with specific features, although their genomic complexity was overall similar to that observed in IC- and HIV-DLBCL. Among the loci more frequently deleted in PT-DLBCL there were small interstitial deletions targeting known fragile sites, such as FRA1B, FRA2E and FRA3B. Deletions at 2p16.1 (FRA2E) were the most common lesions in PT-DLBCL, occurring at a frequency that was significantly higher than in IC-DLBCL. Genetic lesions that characterized post-germinal center IC-DLBCL were under-represented in our series of PT-DLBCL. Two other differences between IC-DLBCL and PT-DLBCL were the lack of del(13q14.3) (MIR15/MIR16) and of copy neutral LOH affecting 6p [major histocompatibility complex (MHC) locus] in the latter group. In conclusion, PT-DLBCL presented unique features when compared with IC-DLBCL. Changes in PT-DLBCL were partially different to those in HIV-DLBCL, suggesting different pathogenetic mechanisms in the two conditions linked to immunodeficiency.
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Affiliation(s)
- Andrea Rinaldi
- Laboratory of Experimental Oncology and Lymphoma Unit, Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland
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18
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Quintanilla-Martinez L, de Jong D, de Mascarel A, Hsi ED, Kluin P, Natkunam Y, Parrens M, Pileri S, Ott G. Gray zones around diffuse large B cell lymphoma. Conclusions based on the workshop of the XIV meeting of the European Association for Hematopathology and the Society of Hematopathology in Bordeaux, France. J Hematop 2009; 2:211-36. [PMID: 20309430 PMCID: PMC2798939 DOI: 10.1007/s12308-009-0053-9] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2009] [Accepted: 12/01/2009] [Indexed: 12/16/2022] Open
Abstract
The term "gray-zone" lymphoma has been used to denote a group of lymphomas with overlapping histological, biological, and clinical features between various types of lymphomas. It has been used in the context of Hodgkin lymphomas (HL) and non-Hodgkin lymphomas (NHL), including classical HL (CHL), and primary mediastinal large B cell lymphoma, cases with overlapping features between nodular lymphocyte predominant Hodgkin lymphoma and T-cell/histiocyte-rich large B cell lymphoma, CHL, and Epstein-Barr-virus-positive lymphoproliferative disorders, and peripheral T cell lymphomas simulating CHL. A second group of gray-zone lymphomas includes B cell NHL with intermediate features between diffuse large B cell lymphoma and classical Burkitt lymphoma. In order to review controversial issues in gray-zone lymphomas, a joint Workshop of the European Association for Hematopathology and the Society for Hematopathology was held in Bordeaux, France, in September 2008. The panel members reviewed and discussed 145 submitted cases and reached consensus diagnoses. This Workshop summary is focused on the most controversial aspects of gray-zone lymphomas and describes the panel's proposals regarding diagnostic criteria, terminology, and new prognostic and diagnostic parameters.
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Affiliation(s)
- Leticia Quintanilla-Martinez
- Institute of Pathology, Eberhard-Karls-University of Tübingen, Tübingen, Germany
- Institute of Pathology, University Hospital Tübingen, Liebermeisterstr. 8, 72076 Tübingen, Germany
| | - Daphne de Jong
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Antoine de Mascarel
- Department of Pathology, CHU de Bordeaux, Hospital Haut-Lévêque, University of Bordeaux, Bordeaux, France
| | - Eric D. Hsi
- Department of Clinical Pathology, Cleveland Clinic, Cleveland, OH USA
| | - Philip Kluin
- Department of Pathology and Laboratory Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Yaso Natkunam
- Department of Pathology, Stanford University School of Medicine, Stanford, CA USA
| | - Marie Parrens
- Department of Pathology, CHU de Bordeaux, Hospital Haut-Lévêque, University of Bordeaux, Bordeaux, France
| | - Stefano Pileri
- Hematopathology Section, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - German Ott
- Department of Clinical Pathology, Robert-Bosch-Hospital, and Dr. Margarete Fischer-Bosch Institute for Clinical Pharmacology, Stuttgart, Germany
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Schmitz R, Hansmann ML, Bohle V, Martin-Subero JI, Hartmann S, Mechtersheimer G, Klapper W, Vater I, Giefing M, Gesk S, Stanelle J, Siebert R, Küppers R. TNFAIP3 (A20) is a tumor suppressor gene in Hodgkin lymphoma and primary mediastinal B cell lymphoma. ACTA ACUST UNITED AC 2009; 206:981-9. [PMID: 19380639 PMCID: PMC2715030 DOI: 10.1084/jem.20090528] [Citation(s) in RCA: 354] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Proliferation and survival of Hodgkin and Reed/Sternberg (HRS) cells, the malignant cells of classical Hodgkin lymphoma (cHL), are dependent on constitutive activation of nuclear factor kappaB (NF-kappaB). NF-kappaB activation through various stimuli is negatively regulated by the zinc finger protein A20. To determine whether A20 contributes to the pathogenesis of cHL, we sequenced TNFAIP3, encoding A20, in HL cell lines and laser-microdissected HRS cells from cHL biopsies. We detected somatic mutations in 16 out of 36 cHLs (44%), including missense mutations in 2 out of 16 Epstein-Barr virus-positive (EBV(+)) cHLs and a missense mutation, nonsense mutations, and frameshift-causing insertions or deletions in 14 out of 20 EBV(-) cHLs. In most mutated cases, both TNFAIP3 alleles were inactivated, including frequent chromosomal deletions of TNFAIP3. Reconstitution of wild-type TNFAIP3 in A20-deficient cHL cell lines revealed a significant decrease in transcripts of selected NF-kappaB target genes and caused cytotoxicity. Extending the mutation analysis to primary mediastinal B cell lymphoma (PMBL), another lymphoma with constitutive NF-kappaB activity, revealed destructive mutations in 5 out of 14 PMBLs (36%). This report identifies TNFAIP3 (A20), a key regulator of NF-kappaB activity, as a novel tumor suppressor gene in cHL and PMBL. The significantly higher frequency of TNFAIP3 mutations in EBV(-) than EBV(+) cHL suggests complementing functions of TNFAIP3 inactivation and EBV infection in cHL pathogenesis.
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Affiliation(s)
- Roland Schmitz
- Institute of Cell Biology (Cancer Research), Medical School, University of Duisburg-Essen, 45122 Essen, Germany
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20
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Abstract
Abstract
Primary mediastinal B-cell lymphoma is a discrete clinicopathologic entity. Molecular analysis reveals it to be distinct from other types of large B-cell lymphoma, and retrospective analysis suggests that it may respond better to multi-agent chemotherapy regimens than to the more commonly used CHOP. The addition of rituximab may mitigate such differences, and may also diminish the role of consolidation radiotherapy, which is often used to treat residual mediastinal masses. For the future the role of FDG-PET scanning requires prospective examination, and it is hoped that this may allow the de-escalation of treatment if it can be shown to yield reliable prognostic information. The relative rarity of this type of lymphoma necessitates international collaboration in clinical trials, with a prospective clinicopathologic study, IELSG 26, already underway.
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