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Ambrosio MR, Mundo L, Gazaneo S, Picciolini M, Vara PS, Sayed S, Ginori A, Lo Bello G, Del Porro L, Navari M, Ascani S, Yonis A, Leoncini L, Piccaluga PP, Lazzi S. MicroRNAs sequencing unveils distinct molecular subgroups of plasmablastic lymphoma. Oncotarget 2017; 8:107356-107373. [PMID: 29296171 PMCID: PMC5746073 DOI: 10.18632/oncotarget.22219] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 09/08/2017] [Indexed: 11/25/2022] Open
Abstract
Plasmablastic lymphoma (PBL) is an aggressive lymphoma, often arising in the context of immunodeficiency and associated with Epstein-Barr virus (EBV) infection. The most frequently detected genetic alteration is the deregulation of MYC gene through the translocation - t(8;14)(q24;q32). The diagnosis of PBL is often challenging because it has an overlap in morphology, immunophenotype, cytogenetics and virus association with other lymphomas and plasma cell neoplasms; further, its molecular basis remains elusive. In the present study we aimed to better define the possible contribution of EBV infection as well as miRNA deregulation in PBL pathogenesis. We studied 23 cases of PBL, 19 Burkitt lymphomas (BL), and 17 extra-medullary plasmacytoma (EMPC). We used qPCR and immunohistochemistry to assess EBV latency patterns, while micro-RNA (miRNA) profiling was performed by next generation sequencing (Illumina) and validated by qPCR. Our analysis revealed a non-canonical EBV latency program with the partial expression of some proteins characterizing latency II and the activation of an abortive lytic cycle. Moreover, we identified miRNA signatures discriminating PBL from BL and EMPC. Interestingly, based on the miRNA profile, PBL appeared constituted by two discrete subgroups more similar to either BL or EMPC, respectively. This pattern was confirmed in an independent set of cases studied by qPCR and corresponded to different clinico-pathological features in the two groups, including HIV infection, MYC rearrangement and disease localization. In conclusion, we uncovered for the first time 1) an atypical EBV latency program in PBL; 2) a miRNA signature distinguishing PBL from the closest malignant counterparts; 3) the molecular basis of PBL heterogeneity.
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Affiliation(s)
| | - Lucia Mundo
- Department of Medical Biotechnology, Section of Pathology, University of Siena, Siena, Italy
| | - Sara Gazaneo
- Department of Medical Biotechnology, Section of Pathology, University of Siena, Siena, Italy
| | | | | | | | - Alessandro Ginori
- Department of Medical Biotechnology, Section of Pathology, University of Siena, Siena, Italy
- Pathology Unit, Ospedale Civico di Carrara, Carrara, Italy
| | - Giuseppe Lo Bello
- Department of Medical Biotechnology, Section of Pathology, University of Siena, Siena, Italy
| | - Leonardo Del Porro
- Department of Medical Biotechnology, Section of Pathology, University of Siena, Siena, Italy
| | - Mohsen Navari
- Research Center of Advanced Technologies in Medicine, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
- Department of Experimental, Diagnostic, and Experimental Medicine, Bologna University School of Medicine, Bologna, Italy
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
| | - Stefano Ascani
- Section of Pathology, Azienda Ospedaliera S. Maria di Terni, University of Perugia, Perugia, Italy
| | | | - Lorenzo Leoncini
- Department of Medical Biotechnology, Section of Pathology, University of Siena, Siena, Italy
| | - Pier Paolo Piccaluga
- Department of Experimental, Diagnostic, and Experimental Medicine, Bologna University School of Medicine, Bologna, Italy
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
| | - Stefano Lazzi
- Department of Medical Biotechnology, Section of Pathology, University of Siena, Siena, Italy
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Gibbs JD, Leon ME, Liu K, Nguyen J, Zhang L. A rare case of Epstein-Barr virus-related plasmacytoma involving maxillary sinus mucosa. Clin Case Rep 2017; 5:1482-1485. [PMID: 28878909 PMCID: PMC5582233 DOI: 10.1002/ccr3.959] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/13/2017] [Accepted: 03/05/2017] [Indexed: 11/09/2022] Open
Abstract
Extramedullary plasmacytomas, Epstein–Bar virus (EBV) associated, are rarely encountered and usually have a fairly good clinical outcome. EBV+ plasmacytoma may cause a diagnostic dilemma as it phenotypically resembles an aggressive plasmablastic lymphoma (PBL). Herein, we report a unique case with maxillary EBV+ plasmacytoma from a 76‐year‐old immunocompetent individual.
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Affiliation(s)
- Julie D Gibbs
- Department of Pathology The University of South Florida Tampa Florida
| | - Marino E Leon
- Department of Pathology The University of Florida Gainsville Florida
| | - Kenia Liu
- Department of Hematopathology and Laboratory Medicine Moffitt Cancer Center Tampa Florida
| | - Johnny Nguyen
- Department of Pathology John Hopkin All Children Hospital St Petersburg Florida
| | - Ling Zhang
- Department of Hematopathology and Laboratory Medicine Moffitt Cancer Center Tampa Florida
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Marks E, Shi Y, Wang Y. CD117 (KIT) is a useful marker in the diagnosis of plasmablastic plasma cell myeloma. Histopathology 2017; 71:81-88. [DOI: 10.1111/his.13196] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 02/19/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Etan Marks
- Department of Pathology; Montefiore Medical Center/Albert Einstein College of Medicine; Bronx NY USA
| | - Yang Shi
- Department of Pathology; Montefiore Medical Center/Albert Einstein College of Medicine; Bronx NY USA
| | - Yanhua Wang
- Department of Pathology; Montefiore Medical Center/Albert Einstein College of Medicine; Bronx NY USA
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Nguyen L, Papenhausen P, Shao H. The Role of c-MYC in B-Cell Lymphomas: Diagnostic and Molecular Aspects. Genes (Basel) 2017; 8:genes8040116. [PMID: 28379189 PMCID: PMC5406863 DOI: 10.3390/genes8040116] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 03/27/2017] [Accepted: 03/27/2017] [Indexed: 12/25/2022] Open
Abstract
c-MYC is one of the most essential transcriptional factors, regulating a diverse array of cellular functions, including proliferation, growth, and apoptosis. Dysregulation of c-MYC is essential in the pathogenesis of a number of B-cell lymphomas, but is rarely reported in T-cell lymphomas. c-MYC dysregulation induces lymphomagenesis by loss of the tight control of c-MYC expression, leading to overexpression of intact c-MYC protein, in contrast to the somatic mutations or fusion proteins seen in many other oncogenes. Dysregulation of c-MYC in B-cell lymphomas occurs either as a primary event in Burkitt lymphoma, or secondarily in aggressive lymphomas such as diffuse large B-cell lymphoma, plasmablastic lymphoma, mantle cell lymphoma, or double-hit lymphoma. Secondary c-MYC changes include gene translocation and gene amplification, occurring against a background of complex karyotype, and most often confer aggressive clinical behavior, as evidenced in the double-hit lymphomas. In low-grade B-cell lymphomas, acquisition of c-MYC rearrangement usually results in transformation into highly aggressive lymphomas, with some exceptions. In this review, we discuss the role that c-MYC plays in the pathogenesis of B-cell lymphomas, the molecular alterations that lead to c-MYC dysregulation, and their effect on prognosis and diagnosis in specific types of B-cell lymphoma.
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Affiliation(s)
- Lynh Nguyen
- Department of Hematopathology and Laboratory Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA.
| | - Peter Papenhausen
- Cytogenetics Laboratory, Laboratory Corporation of America, Research Triangle Park, NC 27709, USA.
| | - Haipeng Shao
- Department of Hematopathology and Laboratory Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA.
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