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Giguère A, Raymond-Bouchard I, Collin V, Claveau JS, Hébert J, LeBlanc R. Optical Genome Mapping Reveals the Complex Genetic Landscape of Myeloma. Cancers (Basel) 2023; 15:4687. [PMID: 37835381 PMCID: PMC10571866 DOI: 10.3390/cancers15194687] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/15/2023] [Accepted: 09/17/2023] [Indexed: 10/15/2023] Open
Abstract
Fluorescence in situ hybridization (FISH) on enriched CD138 plasma cells is the standard method for identification of clinically relevant genetic abnormalities in multiple myeloma. However, FISH is a targeted analysis that can be challenging due to the genetic complexity of myeloma. The aim of this study was to evaluate the potential of optical genome mapping (OGM) to detect clinically significant cytogenetic abnormalities in myeloma and to provide larger pangenomic information. OGM and FISH analyses were performed on CD138-purified cells of 20 myeloma patients. OGM successfully detected structural variants (SVs) (IGH and MYC rearrangements), copy number variants (CNVs) (17p/TP53 deletion, 1p deletion and 1q gain/amplification) and aneuploidy (gains of odd-numbered chromosomes, monosomy 13) classically expected with myeloma and led to a 30% increase in prognosis yield at our institution when compared to FISH. Despite challenges in the interpretation of OGM calls for CNV and aneuploidy losses in non-diploid genomes, OGM has the potential to replace FISH as the standard of care analysis in clinical settings and to efficiently change how we identify prognostic and predictive markers for therapies in the future. To our knowledge, this is the first study highlighting the feasibility and clinical utility of OGM in myeloma.
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Affiliation(s)
- Amélie Giguère
- Cytogenetics Laboratory, Maisonneuve-Rosemont Hospital, Montreal, QC H1T 2M4, Canada; (I.R.-B.); (V.C.); (J.H.)
| | - Isabelle Raymond-Bouchard
- Cytogenetics Laboratory, Maisonneuve-Rosemont Hospital, Montreal, QC H1T 2M4, Canada; (I.R.-B.); (V.C.); (J.H.)
| | - Vanessa Collin
- Cytogenetics Laboratory, Maisonneuve-Rosemont Hospital, Montreal, QC H1T 2M4, Canada; (I.R.-B.); (V.C.); (J.H.)
| | - Jean-Sébastien Claveau
- Division of Hematology, Oncology and Transplantation, Department of Medicine, Maisonneuve-Rosemont Hospital, Université de Montréal, Montreal, QC H1T 2M4, Canada; (J.-S.C.); (R.L.)
| | - Josée Hébert
- Cytogenetics Laboratory, Maisonneuve-Rosemont Hospital, Montreal, QC H1T 2M4, Canada; (I.R.-B.); (V.C.); (J.H.)
- Division of Hematology, Oncology and Transplantation, Department of Medicine, Maisonneuve-Rosemont Hospital, Université de Montréal, Montreal, QC H1T 2M4, Canada; (J.-S.C.); (R.L.)
| | - Richard LeBlanc
- Division of Hematology, Oncology and Transplantation, Department of Medicine, Maisonneuve-Rosemont Hospital, Université de Montréal, Montreal, QC H1T 2M4, Canada; (J.-S.C.); (R.L.)
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FGFR3-TACCs3 Fusions and Their Clinical Relevance in Human Glioblastoma. Int J Mol Sci 2022; 23:ijms23158675. [PMID: 35955806 PMCID: PMC9369421 DOI: 10.3390/ijms23158675] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 07/27/2022] [Accepted: 08/02/2022] [Indexed: 02/01/2023] Open
Abstract
Oncogenic fusion genes have emerged as successful targets in several malignancies, such as chronic myeloid leukemia and lung cancer. Fusion of the fibroblast growth receptor 3 and the transforming acidic coiled coil containing protein—FGFR3-TACC3 fusion—is prevalent in 3–4% of human glioblastoma. The fusion protein leads to the constitutively activated kinase signaling of FGFR3 and thereby promotes cell proliferation and tumor progression. The subgroup of FGFR3-TACC3 fusion-positive glioblastomas presents with recurrent clinical and histomolecular characteristics, defining a distinctive subtype of IDH-wildtype glioblastoma. This review aims to provide an overview of the available literature on FGFR3-TACC3 fusions in glioblastoma and possible implications for actual clinical practice.
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Desantis V, Solimando AG, Saltarella I, Sacco A, Giustini V, Bento M, Lamanuzzi A, Melaccio A, Frassanito MA, Paradiso A, Montagnani M, Vacca A, Roccaro AM. MicroRNAs as a Potential New Preventive Approach in the Transition from Asymptomatic to Symptomatic Multiple Myeloma Disease. Cancers (Basel) 2021; 13:cancers13153650. [PMID: 34359551 PMCID: PMC8344971 DOI: 10.3390/cancers13153650] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/16/2021] [Accepted: 07/19/2021] [Indexed: 01/02/2023] Open
Abstract
Simple Summary Multiple myeloma (MM) is the second most common haematologic malignancy, and it remains an incurable disease despite the advances of novel therapies. It is characterised by a multistep process that arises from a pre-malignant asymptomatic status-defined monoclonal gammopathy of undetermined significance (MGUS), evolves to a middle stage named smouldering myeloma phase (SMM), and culminates in the active disease (MM). Identification of early and non-invasive markers of the disease progression is currently an active field of investigation. In this review, we discuss the role and significance of microRNAs (miRNAs) as potential diagnostic biomarkers to predict the clinical transition from MGUS/SMM status to MM. Abstract Multiple myeloma (MM) is a hematological malignancy characterised by proliferation of clonal plasma cells (PCs) within the bone marrow (BM). Myelomagenesis is a multi-step process which goes from an asymptomatic phase, defined as monoclonal gammopathy of undetermined significance (MGUS), to a smouldering myeloma (SMM) stage, to a final active MM disease, characterised by hypercalcemia, renal failure, bone lesions anemia, and higher risk of infections. Overall, microRNAs (miRNAs) have shown to significantly impact on MM tumorigenesis, as a result of miRNA-dependent modulation of genes involved in pathways known to be crucial for MM pathogenesis and disease progression. We aim to revise the literature related to the role of miRNAs as potential diagnostic and prognostic biomarkers, thus highlighting their key role as novel players within the field of MM and related premalignant conditions.
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Affiliation(s)
- Vanessa Desantis
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Antonio Giovanni Solimando
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
- IRCCS Istituto Tumori “Giovanni Paolo II” of Bari, 70124 Bari, Italy;
| | - Ilaria Saltarella
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
| | - Antonio Sacco
- Clinical Research Development and Phase I Unit, ASST Spedali Civili di Brescia, 25123 Brescia, Italy; (A.S.); (V.G.)
| | - Viviana Giustini
- Clinical Research Development and Phase I Unit, ASST Spedali Civili di Brescia, 25123 Brescia, Italy; (A.S.); (V.G.)
| | - Marta Bento
- Centro Hospitalar Lisboa Norte, Department of Hematology and Transplantation, Institute of Molecular Medicine, University of Lisbon, 1649-035 Lisbon, Portugal;
| | - Aurelia Lamanuzzi
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
| | - Assunta Melaccio
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
| | - Maria Antonia Frassanito
- Unit of General Pathology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Angelo Paradiso
- IRCCS Istituto Tumori “Giovanni Paolo II” of Bari, 70124 Bari, Italy;
| | - Monica Montagnani
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Angelo Vacca
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
- Correspondence: (A.V.); (A.M.R.)
| | - Aldo M. Roccaro
- Clinical Research Development and Phase I Unit, ASST Spedali Civili di Brescia, 25123 Brescia, Italy; (A.S.); (V.G.)
- Correspondence: (A.V.); (A.M.R.)
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Taiana E, Gallo Cantafio ME, Favasuli VK, Bandini C, Viglietto G, Piva R, Neri A, Amodio N. Genomic Instability in Multiple Myeloma: A "Non-Coding RNA" Perspective. Cancers (Basel) 2021; 13:cancers13092127. [PMID: 33924959 PMCID: PMC8125142 DOI: 10.3390/cancers13092127] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/22/2021] [Accepted: 04/26/2021] [Indexed: 12/16/2022] Open
Abstract
Simple Summary Genomic instability (GI) plays an important role in the pathobiology of multiple myeloma (MM) by promoting the acquisition of several tumor hallmarks. Molecular determinants of GI in MM are continuously emerging and will be herein discussed, with specific regard to non-coding RNAs. Targeting non-coding RNA molecules known to be involved in GI indeed provides novel routes to dampen such oncogenic mechanisms in MM. Abstract Multiple myeloma (MM) is a complex hematological malignancy characterized by abnormal proliferation of malignant plasma cells (PCs) within a permissive bone marrow microenvironment. The pathogenesis of MM is unequivocally linked to the acquisition of genomic instability (GI), which indicates the tendency of tumor cells to accumulate a wide repertoire of genetic alterations. Such alterations can even be detected at the premalignant stages of monoclonal gammopathy of undetermined significance (MGUS) and smoldering multiple myeloma (SMM) and, overall, contribute to the acquisition of the malignant traits underlying disease progression. The molecular basis of GI remains unclear, with replication stress and deregulation of DNA damage repair pathways representing the most documented mechanisms. The discovery that non-coding RNA molecules are deeply dysregulated in MM and can target pivotal components of GI pathways has introduced a further layer of complexity to the GI scenario in this disease. In this review, we will summarize available information on the molecular determinants of GI in MM, focusing on the role of non-coding RNAs as novel means to tackle GI for therapeutic intervention.
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Affiliation(s)
- Elisa Taiana
- Department of Oncology and Hemato-Oncology, University of Milan, 20122 Milan, Italy; (E.T.); (V.K.F.)
- Hematology, Fondazione Cà Granda IRCCS Policlinico, 20122 Milan, Italy
| | - Maria Eugenia Gallo Cantafio
- Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (M.E.G.C.); (G.V.)
| | - Vanessa Katia Favasuli
- Department of Oncology and Hemato-Oncology, University of Milan, 20122 Milan, Italy; (E.T.); (V.K.F.)
- Hematology, Fondazione Cà Granda IRCCS Policlinico, 20122 Milan, Italy
| | - Cecilia Bandini
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (C.B.); (R.P.)
- Città Della Salute e della Scienza Hospital, 10126 Torino, Italy
| | - Giuseppe Viglietto
- Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (M.E.G.C.); (G.V.)
| | - Roberto Piva
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (C.B.); (R.P.)
- Città Della Salute e della Scienza Hospital, 10126 Torino, Italy
| | - Antonino Neri
- Department of Oncology and Hemato-Oncology, University of Milan, 20122 Milan, Italy; (E.T.); (V.K.F.)
- Hematology, Fondazione Cà Granda IRCCS Policlinico, 20122 Milan, Italy
- Correspondence: (A.N.); (N.A.)
| | - Nicola Amodio
- Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (M.E.G.C.); (G.V.)
- Correspondence: (A.N.); (N.A.)
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Saitoh T, Oda T. DNA Damage Response in Multiple Myeloma: The Role of the Tumor Microenvironment. Cancers (Basel) 2021; 13:504. [PMID: 33525741 PMCID: PMC7865954 DOI: 10.3390/cancers13030504] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/21/2021] [Accepted: 01/26/2021] [Indexed: 12/13/2022] Open
Abstract
Multiple myeloma (MM) is an incurable plasma cell malignancy characterized by genomic instability. MM cells present various forms of genetic instability, including chromosomal instability, microsatellite instability, and base-pair alterations, as well as changes in chromosome number. The tumor microenvironment and an abnormal DNA repair function affect genetic instability in this disease. In addition, states of the tumor microenvironment itself, such as inflammation and hypoxia, influence the DNA damage response, which includes DNA repair mechanisms, cell cycle checkpoints, and apoptotic pathways. Unrepaired DNA damage in tumor cells has been shown to exacerbate genomic instability and aberrant features that enable MM progression and drug resistance. This review provides an overview of the DNA repair pathways, with a special focus on their function in MM, and discusses the role of the tumor microenvironment in governing DNA repair mechanisms.
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Affiliation(s)
- Takayuki Saitoh
- Department of Laboratory Sciences, Graduate School of Health Sciences, Gunma University, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Tsukasa Oda
- Laboratory of Molecular Genetics, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-machi, Maebashi, Gunma 371-8512, Japan;
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Khouri J, Faiman BM, Grabowski D, Mahfouz RZ, Khan SN, Wei W, Valent J, Dean R, Samaras C, Jha BK, Lazarus H, Campagnaro EL, Malek E, Reed J, Karam MA, Hamilton K, Fada S, Kalaycio M, Liu H, Sobecks R, Saunthararajah Y, Chew Y, Orloff M, Reu FJ. DNA methylation inhibition in myeloma: Experience from a phase 1b study of low-dose continuous azacitidine in combination with lenalidomide and low-dose dexamethasone in relapsed or refractory multiple myeloma. Semin Hematol 2020; 58:45-55. [PMID: 33509443 DOI: 10.1053/j.seminhematol.2020.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/18/2020] [Accepted: 12/22/2020] [Indexed: 01/08/2023]
Abstract
The DNA methyltransferase inhibitor azacytidine (aza) may reactivate pathways associated with plasma cell differentiation, cell cycle control, apoptosis, and immune recognition and thereby restore sensitivity to lenalidomide (len) and dexamethasone (dex) in relapsed and/or refractory multiple myeloma (RRMM). We aimed to develop an aza regimen that reaches epigenetically active levels 8 times in 28 days with less bone marrow toxicity than the myeloid malignancy standard of 7 consecutive doses to enable safe combination with len. Aza was escalated from 30 mg/m2 once a week up to a predefined maximum of 50 mg/m2 twice a week in combination with GFR-adjusted len (≥ 60 mL/min: 25 mg, 3059 mL/min: 10 mg) day 1 to 21 every 28 days and dex 40 mg once a week followed by a limited expansion study to a total N of 23 at the highest tolerated dose. Fifty-one patients (pts) with RRMM were screened, 42 were treated and 41 were evaluable for response based on at least 1 response assessment or progression after treatment start. The median number of prior lines of therapy was 5 (1-11) and 81% (34) were refractory to len and/or pomalidomide (pom). Two DLTs occurred in different cohorts, 1 neutropenic fever in 1/6 pts on the aza 40 mg/m2 twice a week GFR ≥ 60 mL/min cohort and 1 GGT elevation in 1/6 pts on the aza 50 mg/m2 GFR 30-59 mL/min cohort. An MTD was not reached and aza 50 mg/m2 SC twice a week was chosen for the expansion study. At least possibly related Grade 3/4 AEs occurred in 28 pts (67%) with the following in > 1 pt: neutropenia (N = 16, 38%), anemia (N = 6, 14%), lymphopenia (N = 5, 12%), thrombocytopenia (N = 4, 10%), leukopenia (N = 4, 10%), febrile neutropenia (N = 4, 10%), fatigue (N = 3, 7%), fever (N = 2, 5%), and infection (N = 2, 5%). At a median follow up time for alive pts of 60.2 months (range: 36.1-82.5 months), the overall response rate (≥ partial response) and clinical benefit response rate (≥ minor response) was 22 and 32%, respectively, with 4 very good partial responses (10%), 5 partial responses (12%), and 4 minor responses (10%). The median PFS was 3.1 months (95% confidence interval [CI]: 2.1-5.1 months), median TTP 2.7 months (95% CI: 2.1-7.5 months), and median OS 18.6 months (95% CI: 12.9-33.0 months). Achieving at least minor response and reaching TTP > 6 months was associated with approximately 35% lower median plasma levels of the enzyme that inactivates aza, plasma cytidine deaminase (CDA, P< .0001). Two of the len refractory pts achieved longer disease control than with any prior regimen and 1 responded immediately after progression on len, bortezomib, and prednisone. Analyses of the methylation state of over 480,000 CpG sites in purified myeloma cells at screening were possible in 11 pts and on day 28 in 8 of them. As in other studies, the majority of differentially methylated CpGs compared to normal plasma cells were hypomethylated in myeloma. Treatment decreased the number of CpGs that were differentially methylated in normal plasma cells by > 0.5% in 6 and by > 5% in 3 of the 8 pts, most pronounced in 2 pts with clinically convincing aza contribution who achieved a reduction in overall differentially methylated CpGs by 23 and 68%, respectively, associated with increased expression of immunoglobulin genes. The study demonstrated tolerability of twice a week SC aza at 50 mg/m2 with len and dex in RRMM and suggested aza may help overcome the len/pom refractory state, possibly by activating differentiation pathways. Relatively low response rates and association of clinical benefit with low plasma levels of the aza inactivating enzyme CDA suggest the aza regimen will need to be optimized further and pt selection may be required to maximize benefit.
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Affiliation(s)
- Jack Khouri
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Beth M Faiman
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Dale Grabowski
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Reda Z Mahfouz
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Department of Clinical Pathology, Menoufia University, Shebin-Elkom, Egypt
| | - Shahper N Khan
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Interdisciplinary Nanotechnology Centre, Aligarh Muslim University, Aligarh, India
| | - Wei Wei
- Taussig Cancer Institute, Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH
| | - Jason Valent
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Robert Dean
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Christy Samaras
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Babal K Jha
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Hillard Lazarus
- Case Comprehensive Cancer Center, Cleveland, OH; Department of Hematology and Oncology, Seidman Cancer Center, University Hospitals, Cleveland, OH
| | - Erica L Campagnaro
- Case Comprehensive Cancer Center, Cleveland, OH; Department of Hematology and Oncology, Seidman Cancer Center, University Hospitals, Cleveland, OH; University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
| | - Ehsan Malek
- Case Comprehensive Cancer Center, Cleveland, OH; Department of Hematology and Oncology, Seidman Cancer Center, University Hospitals, Cleveland, OH
| | - Janice Reed
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Mary Ann Karam
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Kimberly Hamilton
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Sherry Fada
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Matt Kalaycio
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Hien Liu
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Department of Blood and Marrow Transplant and Cellular Immunotherapy, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - Ronald Sobecks
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Yogen Saunthararajah
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH; Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | | | - Mohammed Orloff
- Lerner Research Institute, Genomic Core Facility, Cleveland Clinic, Cleveland, OH; Department of Epidemiology, University of Arkansas for Medical Sciences, Little Rock, AR; Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Frederic J Reu
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH; Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL; Morsani College of Medicine, University of South Florida, Tampa, FL.
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7
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Mao XH, Zhuang JL, Zhao DD, Li XQ, Du X, Hao M, Xu Y, Yan YT, Liu JH, Fan HS, Sui WW, Deng SH, Li CW, Zhao JW, Yi SH, Du CX, Zou DH, Li ZJ, Zhao YZ, Zhan FH, Tai YT, Fang BJ, Song YP, Wang JX, Anderson KC, Qiu LG, An G. IgH translocation with undefined partners is associated with superior outcome in multiple myeloma patients. Eur J Haematol 2020; 105:326-334. [PMID: 32421883 DOI: 10.1111/ejh.13440] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND In multiple myeloma (MM), impact of specific chromosomal translocations involving IgH (14q21 locus, including t(4;14), t(11;14), and t(14;16)) has been explored extensively. However, over 15% MM patients harboring IgH translocation with undefined partners have long been ignored. METHODS A prospective non-randomized cohort study with a total of 715 newly-diagnosed MM cases was conducted, 13.6% of whom were t(14;undefined) positive. The whole cohort was divided into four groups: no IgH split (47.7%); t(14;undefined) (13.6%); t(11;14) (17.6%); and t(4;14) or t(14;16) group (21.1%). RESULTS Median OS for the four groups was 84.2, not reached (NR), 58.7, and 44.2 months, respectively, with P values for t(14;undefined) vs no IgH split, t(11;14), and t(4;14)/t(14;16) groups of 0.197, 0.022, and 0.001, respectively. In bortezomib-based group, the survival advantage gained by t(14;undefined) group was much more significant compared to t(11;14) and t(4;14)/t(14;16) groups. Importantly, t(14;undefined) turned out to be an independent predictive factor for longer OS of MM patients in multivariate analysis, especially in the context of bortezomib treatment. Similar results were also observed in the PUMCH external validation cohort. CONCLUSION Collectively, our data confirmed and externally validated the favorable prognosis of the t(14;undefined) groups, especially in the era of novel agents.
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Affiliation(s)
- Xue-Han Mao
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Jun-Ling Zhuang
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Duo-Duo Zhao
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiao-Qing Li
- Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Xin Du
- Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Mu Hao
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Yan Xu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Yu-Ting Yan
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Jia-Hui Liu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Hui-Shou Fan
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Wei-Wei Sui
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Shu-Hui Deng
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Cheng-Wen Li
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Jia-Wei Zhao
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Shu-Hua Yi
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Chen-Xing Du
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - De-Hui Zou
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Zeng-Jun Li
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Yao-Zhong Zhao
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Feng-Huang Zhan
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Yu-Tzu Tai
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Bai-Jun Fang
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, China
| | - Yong-Ping Song
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, China
| | - Jian-Xiang Wang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Kenneth C Anderson
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Lu-Gui Qiu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Gang An
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
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8
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Mikulasova A, Ashby C, Tytarenko RG, Qu P, Rosenthal A, Dent JA, Ryan KR, Bauer MA, Wardell CP, Hoering A, Mavrommatis K, Trotter M, Deshpande S, Yaccoby S, Tian E, Keats J, Auclair D, Jackson GH, Davies FE, Thakurta A, Morgan GJ, Walker BA. Microhomology-mediated end joining drives complex rearrangements and overexpression of MYC and PVT1 in multiple myeloma. Haematologica 2020; 105:1055-1066. [PMID: 31221783 PMCID: PMC7109748 DOI: 10.3324/haematol.2019.217927] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 06/13/2019] [Indexed: 12/22/2022] Open
Abstract
MYC is a widely acting transcription factor and its deregulation is a crucial event in many human cancers. MYC is important biologically and clinically in multiple myeloma, but the mechanisms underlying its dysregulation are poorly understood. We show that MYC rearrangements are present in 36.0% of newly diagnosed myeloma patients, as detected in the largest set of next generation sequencing data to date (n=1,267). Rearrangements were complex and associated with increased expression of MYC and PVT1, but not other genes at 8q24. The highest effect on gene expression was detected in cases where the MYC locus is juxtaposed next to super-enhancers associated with genes such as IGH, IGK, IGL, TXNDC5/BMP6, FAM46C and FOXO3 We identified three hotspots of recombination at 8q24, one of which is enriched for IGH-MYC translocations. Breakpoint analysis indicates primary myeloma rearrangements involving the IGH locus occur through non-homologous end joining, whereas secondary MYC rearrangements occur through microhomology-mediated end joining. This mechanism is different to lymphomas, where non-homologous end joining generates MYC rearrangements. Rearrangements resulted in overexpression of key genes and chromatin immunoprecipitation-sequencing identified that HK2, a member of the glucose metabolism pathway, is directly over-expressed through binding of MYC at its promoter.
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Affiliation(s)
- Aneta Mikulasova
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Cody Ashby
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Ruslana G Tytarenko
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Pingping Qu
- Cancer Research and Biostatistics, Seattle, WA, USA
| | | | - Judith A Dent
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Katie R Ryan
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Michael A Bauer
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | | | | | | | - Matthew Trotter
- Celgene Institute for Translational Research Europe, Seville, Spain
| | - Shayu Deshpande
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Shmuel Yaccoby
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Erming Tian
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Jonathan Keats
- Translational Genomics Research Institute, Phoenix, AZ, USA
| | | | - Graham H Jackson
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - Faith E Davies
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | | | - Gareth J Morgan
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Brian A Walker
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Division of Hematology Oncology, Indiana University, Indianapolis, IN, USA
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9
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Zhang ZY, Li YC, Geng CY, Zhou HX, Gao W, Chen WM. Serum exosomal microRNAs as novel biomarkers for multiple myeloma. Hematol Oncol 2019; 37:409-417. [PMID: 31102419 DOI: 10.1002/hon.2639] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 04/29/2019] [Accepted: 05/14/2019] [Indexed: 12/11/2022]
Abstract
Accumulating studies have focused on circulating microRNAs, which might be potential biomarkers for different malignancies. The aim of this study was to investigate the potential of serum exosomal microRNAs to be novel serum biomarkers for smouldering myeloma (SMM) or even multiple myeloma (MM). The levels of serum exosomal microRNAs and serum circulating microRNAs were measured in healthy individuals and patients with SMM (n = 20) or MM (n = 20). Serum exosomal microRNAs and serum circulating microRNAs were extracted from serum, and the expression levels of selected microRNAs were quantified by real-time polymerase chain reaction (PCR). The levels of serum exosome-derived miR-20a-5p, miR-103a-3p, and miR-4505 were significantly different among patients with MM, patients with SMM, and healthy individuals, while there were differences in the levels of let-7c-5p, miR-185-5p, and miR-4741 in patients with MM relative to those in SMM patients or healthy controls. Additionally, a significant correlation was rarely found between the levels of serum and exosomal microRNAs. This study shows that serum exosomal microRNAs can be used independently as novel serum biomarkers for MM.
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Affiliation(s)
- Zhi-Yao Zhang
- Department of Hematology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Yan-Chen Li
- Department of Hematology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Chuan-Ying Geng
- Department of Hematology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Hui-Xing Zhou
- Department of Hematology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Wen Gao
- Department of Hematology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Wen-Ming Chen
- Department of Hematology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
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10
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Szymczyk A, Macheta A, Podhorecka M. Abnormal microRNA expression in the course of hematological malignancies. Cancer Manag Res 2018; 10:4267-4277. [PMID: 30349361 PMCID: PMC6183594 DOI: 10.2147/cmar.s174476] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Research on the carcinogenesis process is currently focused primarily on understanding its genetic basis and molecular abnormalities that may be predictive factors and therapeutic targets. It was clearly confirmed recently that microRNAs are involved in the mechanisms of leukocyte development, differentiation, and apoptosis, as well as in the pathogenesis of proliferative diseases of the hematopoietic system. Currently, research strategies allow determination of the deregulation of microRNA profiles in relation to other cytogenetic aberrations, as well as prognostic factors and primary end points. The problem of the possibility of their use as therapeutic targets is also increasingly discussed. In this article, we analyze literature data on abnormalities in microRNA expression in proliferative diseases of the hematopoietic system in the context of classic cytogenetic and molecular aberrations.
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Affiliation(s)
- Agnieszka Szymczyk
- Independent Clinical Transplantology Unit, Medical University of Lublin, Lublin, Poland,
| | - Arkadiusz Macheta
- Department of Haematooncology and Bone Marrow Transplantation, Medical University of Lublin, Lublin, Poland
| | - Monika Podhorecka
- Department of Haematooncology and Bone Marrow Transplantation, Medical University of Lublin, Lublin, Poland
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11
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Franqui-Machin R, Hao M, Bai H, Gu Z, Zhan X, Habelhah H, Jethava Y, Qiu L, Frech I, Tricot G, Zhan F. Destabilizing NEK2 overcomes resistance to proteasome inhibition in multiple myeloma. J Clin Invest 2018; 128:2877-2893. [PMID: 29863498 PMCID: PMC6026005 DOI: 10.1172/jci98765] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 04/10/2018] [Indexed: 12/30/2022] Open
Abstract
Drug resistance remains the key problem in cancer treatment. It is now accepted that each myeloma patient harbors multiple subclones and subclone dominance may change over time. The coexistence of multiple subclones with high or low chromosomal instability (CIN) signature causes heterogeneity and drug resistance with consequent disease relapse. In this study, using a tandem affinity purification-mass spectrometry (TAP-MS) technique, we found that NEK2, a CIN gene, was bound to the deubiquitinase USP7. Binding to USP7 prevented NEK2 ubiquitination resulting in NEK2 stabilization. Increased NEK2 kinase levels activated the canonical NF-κB signaling pathway through the PP1α/AKT axis. Newly diagnosed myeloma patients with activated NF-κB signaling through increased NEK2 activity had poorer event-free and overall survivals based on multiple independent clinical cohorts. We also found that NEK2 activated heparanase, a secreted enzyme, responsible for bone destruction in an NF-κB-dependent manner. Intriguingly, both NEK2 and USP7 inhibitors showed great efficacy in inhibiting myeloma cell growth and overcoming NEK2-induced and -acquired drug resistance in xenograft myeloma mouse models.
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Affiliation(s)
- Reinaldo Franqui-Machin
- Molecular Medicine Program and
- Division of Hematology, Oncology, and Blood and Marrow Transplantation, Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Mu Hao
- Division of Hematology, Oncology, and Blood and Marrow Transplantation, Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin, China
| | - Hua Bai
- Division of Hematology, Oncology, and Blood and Marrow Transplantation, Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Zhimin Gu
- Division of Hematology, Oncology, and Blood and Marrow Transplantation, Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | | | - Hasem Habelhah
- Molecular Medicine Program and
- Department of Pathology, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Yogesh Jethava
- Division of Hematology, Oncology, and Blood and Marrow Transplantation, Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Lugui Qiu
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin, China
| | - Ivana Frech
- Division of Hematology, Oncology, and Blood and Marrow Transplantation, Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Guido Tricot
- Division of Hematology, Oncology, and Blood and Marrow Transplantation, Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Fenghuang Zhan
- Molecular Medicine Program and
- Division of Hematology, Oncology, and Blood and Marrow Transplantation, Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
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12
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Jiménez C, Jara-Acevedo M, Corchete LA, Castillo D, Ordóñez GR, Sarasquete ME, Puig N, Martínez-López J, Prieto-Conde MI, García-Álvarez M, Chillón MC, Balanzategui A, Alcoceba M, Oriol A, Rosiñol L, Palomera L, Teruel AI, Lahuerta JJ, Bladé J, Mateos MV, Orfão A, San Miguel JF, González M, Gutiérrez NC, García-Sanz R. A Next-Generation Sequencing Strategy for Evaluating the Most Common Genetic Abnormalities in Multiple Myeloma. J Mol Diagn 2016; 19:99-106. [PMID: 27863261 DOI: 10.1016/j.jmoldx.2016.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 08/04/2016] [Accepted: 08/12/2016] [Indexed: 12/16/2022] Open
Abstract
Identification and characterization of genetic alterations are essential for diagnosis of multiple myeloma and may guide therapeutic decisions. Currently, genomic analysis of myeloma to cover the diverse range of alterations with prognostic impact requires fluorescence in situ hybridization (FISH), single nucleotide polymorphism arrays, and sequencing techniques, which are costly and labor intensive and require large numbers of plasma cells. To overcome these limitations, we designed a targeted-capture next-generation sequencing approach for one-step identification of IGH translocations, V(D)J clonal rearrangements, the IgH isotype, and somatic mutations to rapidly identify risk groups and specific targetable molecular lesions. Forty-eight newly diagnosed myeloma patients were tested with the panel, which included IGH and six genes that are recurrently mutated in myeloma: NRAS, KRAS, HRAS, TP53, MYC, and BRAF. We identified 14 of 17 IGH translocations previously detected by FISH and three confirmed translocations not detected by FISH, with the additional advantage of breakpoint identification, which can be used as a target for evaluating minimal residual disease. IgH subclass and V(D)J rearrangements were identified in 77% and 65% of patients, respectively. Mutation analysis revealed the presence of missense protein-coding alterations in at least one of the evaluating genes in 16 of 48 patients (33%). This method may represent a time- and cost-effective diagnostic method for the molecular characterization of multiple myeloma.
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Affiliation(s)
- Cristina Jiménez
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - María Jara-Acevedo
- DNA Sequencing Service, University of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Luis A Corchete
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | | | | | - María E Sarasquete
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Noemí Puig
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Joaquín Martínez-López
- Hematology Department, 12 de Octubre Hospital, Unit of Cancer Research Innovation Spain (CRIS), Spanish National Cancer Research Center (CNIO), University of Madrid, Madrid, Spain
| | - María I Prieto-Conde
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - María García-Álvarez
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - María C Chillón
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Ana Balanzategui
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Miguel Alcoceba
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Albert Oriol
- Catalan Institute of Oncology, Josep Carreras Institute, Germans Trias i Pujol Hospital, Barcelona, Spain
| | - Laura Rosiñol
- Research Biomedical Institute August Pi i Sunyer, Clinical Hospital of Barcelona, Barcelona, Spain
| | | | | | - Juan J Lahuerta
- Hematology Department, 12 de Octubre Hospital, Unit of Cancer Research Innovation Spain (CRIS), Spanish National Cancer Research Center (CNIO), University of Madrid, Madrid, Spain
| | - Joan Bladé
- Research Biomedical Institute August Pi i Sunyer, Clinical Hospital of Barcelona, Barcelona, Spain
| | - María V Mateos
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Alberto Orfão
- DNA Sequencing Service, University of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Jesús F San Miguel
- Center for Applied Medical Research, University of Navarra Hospital, Institute of Health Research of Navarra (IDISNA), Pamplona, Spain
| | - Marcos González
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain.
| | - Norma C Gutiérrez
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Ramón García-Sanz
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Salamanca, Spain
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13
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Mlynarcikova M, Balcarkova J, Mickova P, Scudla V, Pika T, Bacovsky J, Minarik J, Janousova E, Jarosova M. Molecular Cytogenetic Analysis of Chromosome 8 Aberrations in Patients With Multiple Myeloma Examined in 2 Different Stages, at Diagnosis and at Progression/Relapse. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2016; 16:358-65. [PMID: 27052024 DOI: 10.1016/j.clml.2016.02.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 02/09/2016] [Accepted: 02/18/2016] [Indexed: 12/21/2022]
Abstract
BACKGROUND The genome of multiple myeloma (MM) clonal plasma cells is characterized by genetic changes of prognostic importance. Disease progression is accompanied by a number of secondary chromosomal aberrations including chromosome 8. We focused on the detection of chromosome 8 aberrations in patients with MM who were examined at 2 different phases: diagnosis and progression/relapse. PATIENTS AND METHODS A total of 62 patients with MM were examined at the time of diagnosis and at relapse/progression. The median age was 64 years (range, 39-78 years); the study included 29 males and 33 females. We analyzed bone marrow samples for detecting aberrations on chromosome 8 by the fluorescence immunophenotyping and interphase cytogenetics as a tool for the investigation of neoplasms (FICTION) and fluorescence in situ hybridization methods with specific probes. RESULTS Chromosome 8 aberrations were detected in 24 (38.7%) patients at diagnosis and in 29 (46.8%) patients at progression/relapse. Only 5 (8%) patients developed additional chromosome 8 changes at progression/relapse. The aberrations were heterogeneous, involving numerical and structural changes of the MYC gene. Aberrations of the short arm of chromosome 8, involving the genes TRAIL-R1/-R2, were less frequent (4 of 62 patients, 6.4%). All aberrations of chromosome 8 were accompanied with additional changes and with an advanced clinical phase of the disease. This finding significantly influenced the overall survival of patients. CONCLUSION In the current study, chromosome 8 aberrations were highly heterogeneous, were presented at diagnosis in patients with advanced clinical stage, and were associated with worse overall survival. We have not confirmed the increase of frequency aberration of chromosome 8 in disease progression. The findings demonstrate the importance of fluorescence in situ hybridization examination of chromosome 8 in newly diagnosed patients with MM.
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Affiliation(s)
| | - Jana Balcarkova
- Department of Hemato-oncology, Palacky University Hospital, Olomouc, Czech Republic
| | - Pavla Mickova
- Department of Hemato-oncology, Palacky University Hospital, Olomouc, Czech Republic
| | - Vlastimil Scudla
- Department of Hemato-oncology, Palacky University Hospital, Olomouc, Czech Republic
| | - Tomas Pika
- Department of Hemato-oncology, Palacky University Hospital, Olomouc, Czech Republic
| | - Jaroslav Bacovsky
- Department of Hemato-oncology, Palacky University Hospital, Olomouc, Czech Republic
| | - Jiri Minarik
- Department of Hemato-oncology, Palacky University Hospital, Olomouc, Czech Republic
| | - Eva Janousova
- Institute of Biostatistics and Analysis, Masaryk University, Brno, Czech Republic
| | - Marie Jarosova
- Department of Hemato-oncology, Palacky University Hospital, Olomouc, Czech Republic.
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14
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Wang W, Corrigan-Cummins M, Barber EA, Saleh LM, Zingone A, Ghafoor A, Costello R, Zhang Y, Kurlander RJ, Korde N, Roccaro AM, Ghobrial IM, Landgren O, Calvo KR. Aberrant Levels of miRNAs in Bone Marrow Microenvironment and Peripheral Blood of Myeloma Patients and Disease Progression. J Mol Diagn 2015; 17:669-78. [PMID: 26433312 DOI: 10.1016/j.jmoldx.2015.06.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 05/26/2015] [Accepted: 06/22/2015] [Indexed: 12/20/2022] Open
Abstract
The bone marrow (BM) microenvironment of multiple myeloma (MM) is reported to play a role in the biology of disease. In this study, we found that the extracellular BM microenvironment in MM contains a unique miRNA signature detectable by miRNA microarray and quantitative real-time PCR, which is partially represented in the peripheral blood. Eleven miRNAs were significantly decreased in both BM and serum of MM patients in comparison with controls. Evaluation of these miRNAs in plasma of a separate cohort of MM patients and controls confirmed significantly aberrant levels of let-7a, let-7b, let-7i, miR-15b, miR-16, and miR-20a in both serum and plasma. We then studied the myeloma precursor diseases and found that a subset of the MM miRNAs exhibited aberrant expression in monoclonal gammopathy of undetermined significance and smoldering myeloma. miRNA analysis of enriched CD138(+) plasma cells from MM and monoclonal gammopathy of undetermined significance found that most of the validated MM BM signature miRNAs were significantly decreased in MM plasma cells. Gene expression profiling indicated that multiple targets of the decreased miRNAs found increased expression in MM plasma cells, including ATF2, HRAS, HDAC4, TGFB1, TGFBR1, and mitogen-activated protein kinases. The findings suggest that these miRNAs are detectable in aberrant levels in the peripheral blood of patients with plasma cell proliferation and may play a role in aberrant plasma cell proliferation and disease progression.
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Affiliation(s)
- Weixin Wang
- Hematology Section, Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, Maryland
| | - Meghan Corrigan-Cummins
- Hematology Section, Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, Maryland
| | - Emily A Barber
- Hematology Section, Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, Maryland
| | - Layla M Saleh
- Hematology Section, Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, Maryland
| | - Adriana Zingone
- Multiple Myeloma Section, Metabolism Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Azam Ghafoor
- Hematology Section, Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, Maryland
| | - Rene Costello
- Multiple Myeloma Section, Metabolism Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Yong Zhang
- Multiple Myeloma Section, Metabolism Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Roger J Kurlander
- Hematology Section, Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, Maryland
| | - Neha Korde
- Multiple Myeloma Section, Metabolism Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Aldo M Roccaro
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Irene M Ghobrial
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Ola Landgren
- Multiple Myeloma Section, Metabolism Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Katherine R Calvo
- Hematology Section, Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, Maryland.
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15
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Tian E, Børset M, Sawyer JR, Brede G, Våtsveen TK, Hov H, Waage A, Barlogie B, Shaughnessy JD, Epstein J, Sundan A. Allelic mutations in noncoding genomic sequences construct novel transcription factor binding sites that promote gene overexpression. Genes Chromosomes Cancer 2015. [PMID: 26220195 DOI: 10.1002/gcc.22280] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The growth and survival factor hepatocyte growth factor (HGF) is expressed at high levels in multiple myeloma (MM) cells. We report here that elevated HGF transcription in MM was traced to DNA mutations in the promoter alleles of HGF. Sequence analysis revealed a previously undiscovered single-nucleotide polymorphism (SNP) and crucial single-nucleotide variants (SNVs) in the promoters of myeloma cells that produce large amounts of HGF. The allele-specific mutations functionally reassembled wild-type sequences into the motifs that affiliate with endogenous transcription factors NFKB (nuclear factor kappa-B), MZF1 (myeloid zinc finger 1), and NRF-2 (nuclear factor erythroid 2-related factor 2). In vitro, a mutant allele that gained novel NFKB-binding sites directly responded to transcriptional signaling induced by tumor necrosis factor alpha (TNFα) to promote high levels of luciferase reporter. Given the recent discovery by genome-wide sequencing (GWS) of numerous non-coding mutations in myeloma genomes, our data provide evidence that heterogeneous SNVs in the gene regulatory regions may frequently transform wild-type alleles into novel transcription factor binding properties to aberrantly interact with dysregulated transcriptional signals in MM and other cancer cells.
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Affiliation(s)
- Erming Tian
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway.,The Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Magne Børset
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway.,Department of Immunology and Transfusion Medicine, St. Olavs Hospital, Trondheim, Norway
| | - Jeffrey R Sawyer
- The Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Gaute Brede
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Thea K Våtsveen
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Håkon Hov
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Anders Waage
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Bart Barlogie
- The Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR
| | | | - Joshua Epstein
- The Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Anders Sundan
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
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16
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Walker BA, Wardell CP, Murison A, Boyle EM, Begum DB, Dahir NM, Proszek PZ, Melchor L, Pawlyn C, Kaiser MF, Johnson DC, Qiang YW, Jones JR, Cairns DA, Gregory WM, Owen RG, Cook G, Drayson MT, Jackson GH, Davies FE, Morgan GJ. APOBEC family mutational signatures are associated with poor prognosis translocations in multiple myeloma. Nat Commun 2015; 6:6997. [PMID: 25904160 PMCID: PMC4568299 DOI: 10.1038/ncomms7997] [Citation(s) in RCA: 223] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 03/24/2015] [Indexed: 12/12/2022] Open
Abstract
We have sequenced 463 presenting cases of myeloma entered into the UK Myeloma XI study using whole exome sequencing. Here we identify mutations induced as a consequence of misdirected AID in the partner oncogenes of IGH translocations, which are activating and associated with impaired clinical outcome. An APOBEC mutational signature is seen in 3.8% of cases and is linked to the translocation-mediated deregulation of MAF and MAFB, a known poor prognostic factor. Patients with this signature have an increased mutational load and a poor prognosis. Loss of MAF or MAFB expression results in decreased APOBEC3B and APOBEC4 expression, indicating a transcriptional control mechanism. Kataegis, a further mutational pattern associated with APOBEC deregulation, is seen at the sites of the MYC translocation. The APOBEC mutational signature seen in myeloma is, therefore, associated with poor prognosis primary and secondary translocations and the molecular mechanisms involved in generating them.
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Affiliation(s)
- Brian A Walker
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Christopher P Wardell
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Alex Murison
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Eileen M Boyle
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Dil B Begum
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Nasrin M Dahir
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Paula Z Proszek
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Lorenzo Melchor
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Charlotte Pawlyn
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Martin F Kaiser
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - David C Johnson
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Ya-Wei Qiang
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
| | - John R Jones
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - David A Cairns
- Clinical Trials Research Unit, University of Leeds, Leeds LS2 9JT, UK
| | - Walter M Gregory
- Clinical Trials Research Unit, University of Leeds, Leeds LS2 9JT, UK
| | - Roger G Owen
- St James's University Hospital, University of Leeds, Leeds LS2 9JT, UK
| | - Gordon Cook
- St James's University Hospital, University of Leeds, Leeds LS2 9JT, UK
| | - Mark T Drayson
- Clinical Immunology, School of Immunity &Infection, University of Birmingham, Birmingham B15 2TT, UK
| | - Graham H Jackson
- Department of Haematology, Newcastle University, Newcastle-Upon-Tyne NE1 7RU, UK
| | - Faith E Davies
- 1] Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK [2] Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
| | - Gareth J Morgan
- 1] Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK [2] Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
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Türkmen S, Binder A, Gerlach A, Niehage S, Theodora Melissari M, Inandiklioglu N, Dörken B, Burmeister T. High prevalence of immunoglobulin light chain gene aberrations as revealed by FISH in multiple myeloma and MGUS. Genes Chromosomes Cancer 2014; 53:650-6. [PMID: 24729354 DOI: 10.1002/gcc.22175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 03/31/2014] [Indexed: 01/09/2023] Open
Abstract
Multiple myeloma (MM) is a malignant B-cell neoplasm characterized by an uncontrolled proliferation of aberrant plasma cells in the bone marrow. Chromosome aberrations in MM are complex and represent a hallmark of the disease, involving many chromosomes that are altered both numerically and structurally. Nearly half of the cases are nonhyperdiploid and show IGH translocations with the following partner genes: CCND1, FGFR3 and MMSET, MAF, MAFB, and CCND3. The remaining 50% are grouped into a hyperdiploid group that is characterized by multiple trisomies involving chromosomes 3, 5, 7, 9, 11, 15, 19, and 21. In this study, we analyzed the immunoglobulin light chain kappa (IGK, 2p12) and lambda (IGL, 22q11) loci in 150 cases, mostly with MM but in a few cases monoclonal gammopathy of undetermined significance (MGUS), without IGH translocations. We identified aberrations in 27% (= 40 patients) including rearrangements (12%), gains (12%), and deletions (4.6%). In 6 of 18 patients with IGK or/and IGL rearrangements, we detected a MYC rearrangement which suggests that MYC is the translocation partner in the majority of these cases.
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Affiliation(s)
- Seval Türkmen
- Labor Berlin, Tumorzytogenetik, Berlin, Germany; Institut für Medizinische Genetik und Humangenetik, Charité, CVK, Berlin, Germany
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18
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Sklyar IV, Iarovaia OV, Lipinski M, Vassetzky YS. Translocations affecting human immunoglobulin heavy chain locus. ACTA ACUST UNITED AC 2014. [DOI: 10.7124/bc.000886] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- I. V. Sklyar
- CNRS UMR8126, Paris-Sud University, Gustave Roussy Institute
- Institute of Gene Biology, Russian Academy of Sciences
- LIA 1066 French-Russian Joint Cancer Research Laboratory
| | - O. V. Iarovaia
- Institute of Gene Biology, Russian Academy of Sciences
- LIA 1066 French-Russian Joint Cancer Research Laboratory
| | - M. Lipinski
- CNRS UMR8126, Paris-Sud University, Gustave Roussy Institute
- LIA 1066 French-Russian Joint Cancer Research Laboratory
| | - Y. S. Vassetzky
- Institute of Gene Biology, Russian Academy of Sciences
- LIA 1066 French-Russian Joint Cancer Research Laboratory
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19
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Kim GY, Gabrea A, Demchenko YN, Bergsagel L, Roschke AV, Kuehl WM. Complex IGH rearrangements in multiple myeloma: Frequent detection discrepancies among three different probe sets. Genes Chromosomes Cancer 2014; 53:467-74. [PMID: 24585545 DOI: 10.1002/gcc.22158] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 01/29/2014] [Accepted: 02/03/2014] [Indexed: 11/07/2022] Open
Abstract
Primary IGH translocations involving seven recurrent partner loci and oncogenes are present in about 40% of multiple myeloma tumors. Secondary IGH rearrangements, which occur in a smaller fraction of tumors, usually are complex structures, including insertions or translocations that can involve three chromosomes, and often with involvement of MYC. The main approach to detect IGH rearrangements is interphase-but sometimes metaphase-FISH strategies that use a telomeric variable region probe and a centromeric constant region/ Eα enhancer or 3' flanking probe to detect a separation of these two probes, or a fusion of these probes with probes located at nonrandom partner sites in the genome. We analyzed 18 myeloma cell lines for detection discrepancies among Vysis, Cytocell, and in-house IGH probe sets that hybridize with differing sequences in the IGH locus. There were no detection discrepancies for the three telomeric IGH probes, or for unrearranged IGH loci or primary IGH translocations using the centromeric IGH probes. However, the majority of complex IGH rearrangements had detection discrepancies among the three centromeric IGH probes.
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Affiliation(s)
- Gina Y Kim
- Genetics Branch, National Cancer Institute, Bethesda, MD
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20
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Promiscuous MYC locus rearrangements hijack enhancers but mostly super-enhancers to dysregulate MYC expression in multiple myeloma. Leukemia 2014; 28:1725-1735. [PMID: 24518206 PMCID: PMC4126852 DOI: 10.1038/leu.2014.70] [Citation(s) in RCA: 194] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/24/2014] [Accepted: 01/28/2014] [Indexed: 01/17/2023]
Abstract
MYC locus rearrangements – often complex combinations of translocations, insertions, deletions, and inversions - in multiple myeloma (MM) were thought to be a late progression event, which often did not involve immunoglobulin genes. Yet germinal center activation of MYC expression has been reported to cause progression to MM in an MGUS prone mouse strain. Although previously detected in 16% of MM, we find MYC rearrangements in nearly 50% of MM, including smoldering MM, and they are heterogeneous in some cases. Rearrangements reposition MYC near a limited number of genes associated with conventional enhancers, but mostly with super-enhancers (e.g., IGH, IGL, IGK, NSMCE2, TXNDC5, FAM46C, FOXO3, IGJ, PRDM1). MYC rearrangements are associated with a significant increase of MYC expression that is monoallelic, but MM tumors lacking a rearrangement have bi-allelic MYC expression at significantly higher levels than in MGUS. We also show that germinal center activation of MYC does not cause MM in a mouse strain that rarely develops spontaneous MGUS. It appears that increased MYC expression at the MGUS/MM transition usually is bi-allelic, but sometimes can be mono-allelic if there is a MYC rearrangement. Our data suggests that MYC rearrangements, regardless of when they occur during MM pathogenesis, provide one event that contributes to tumor autonomy.
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21
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Multiple myeloma. Mol Oncol 2013. [DOI: 10.1017/cbo9781139046947.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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22
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Schmidt J, Braggio E, Kortuem KM, Egan JB, Zhu YX, Xin CS, Tiedemann RE, Palmer SE, Garbitt VM, McCauley D, Kauffman M, Shacham S, Chesi M, Bergsagel PL, Stewart AK. Genome-wide studies in multiple myeloma identify XPO1/CRM1 as a critical target validated using the selective nuclear export inhibitor KPT-276. Leukemia 2013; 27:2357-65. [PMID: 23752175 PMCID: PMC3922416 DOI: 10.1038/leu.2013.172] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 05/10/2013] [Accepted: 05/31/2013] [Indexed: 12/29/2022]
Abstract
RNA interference screening identified XPO1 (exportin 1) among the 55 most vulnerable targets in multiple myeloma (MM). XPO1 encodes CRM1, a nuclear export protein. XPO1 expression increases with MM disease progression. Patients with MM have a higher expression of XPO1 compared with normal plasma cells (P<0.04) and to patients with monoclonal gammopathy of undetermined significance/smoldering MM (P<0.0001). The highest XPO1 level was found in human MM cell lines (HMCLs). A selective inhibitor of nuclear export compound KPT-276 specifically and irreversibly inhibits the nuclear export function of XPO1. The viability of 12 HMCLs treated with KTP-276 was significantly reduced. KPT-276 also actively induced apoptosis in primary MM patient samples. In gene expression analyses, two genes of probable relevance were dysregulated by KPT-276: cell division cycle 25 homolog A (CDC25A) and bromodomain-containing protein 4 (BRD4), both of which are associated with c-MYC pathway. Western blotting and reverse transcription-PCR confirm that c-MYC, CDC25A and BRD4 are all downregulated after treatment with KPT-276. KPT-276 reduced monoclonal spikes in the Vk*MYC transgenic MM mouse model, and inhibited tumor growth in a xenograft MM mouse model. A phase I clinical trial of an analog of KPT-276 is ongoing in hematological malignancies including MM.
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Affiliation(s)
- J Schmidt
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
| | - E Braggio
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
| | - KM Kortuem
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
| | - JB Egan
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
| | - YX Zhu
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
| | - CS Xin
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
| | - RE Tiedemann
- Princess Margaret Hospital, Ontario Cancer Institute, University of Toronto, Toronto, Ontario, Canada
| | - SE Palmer
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
| | - VM Garbitt
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
| | - D McCauley
- Karyopharm Therapeutics, Natick, MA, USA
| | - M Kauffman
- Karyopharm Therapeutics, Natick, MA, USA
| | - S Shacham
- Karyopharm Therapeutics, Natick, MA, USA
| | - M Chesi
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
| | - PL Bergsagel
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
| | - AK Stewart
- Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ, USA
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23
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Walker BA, Wardell CP, Ross FM, Morgan GJ. Identification of a novel t(7;14) translocation in multiple myeloma resulting in overexpression ofEGFR. Genes Chromosomes Cancer 2013; 52:817-22. [DOI: 10.1002/gcc.22077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 04/25/2013] [Indexed: 01/08/2023] Open
Affiliation(s)
- Brian A. Walker
- Molecular Haematology, Haemato-Oncology Research Unit, Division of Molecular Pathology; The Institute of Cancer Research; London UK
| | - Christopher P. Wardell
- Molecular Haematology, Haemato-Oncology Research Unit, Division of Molecular Pathology; The Institute of Cancer Research; London UK
| | - Fiona M. Ross
- Wessex Regional Genetics Laboratory; Salisbury District Hospital; Salisbury UK
| | - Gareth J. Morgan
- Molecular Haematology, Haemato-Oncology Research Unit, Division of Molecular Pathology; The Institute of Cancer Research; London UK
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24
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Martin LD, Harizanova J, Righolt CH, Zhu G, Mai S, Belch AR, Pilarski LM. Differential nuclear organization of translocation-prone genes in nonmalignant B cells from patients with t(14;16) as compared with t(4;14) or t(11;14) myeloma. Genes Chromosomes Cancer 2013; 52:523-37. [PMID: 23460268 DOI: 10.1002/gcc.22049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Accepted: 01/08/2013] [Indexed: 11/08/2022] Open
Abstract
Gene organization in nonmalignant B cells from t(4;14) and t(11;14) multiple myeloma (MM) patients differs from that of healthy donors. Among recurrent IGH translocations in MM, the frequency of t(4;14) (IGH and FGFR3) or t(11;14) (IGH and CCND1) is greater than the frequency of t(14;16) (IGH and MAF). Gene organization in t(14;16) patients may influence translocation potential of MAF with IGH. In patients, three-dimensional FISH revealed the positions of IGH, CCND1, FGFR3, and MAF in nonmalignant B cells that are likely similar to those when MM first arose, compared with B cells from healthy donors. Overall, IGH occupies a more central nuclear position while MAF is more peripherally located. However, for B cells from t(4;14) and t(11;14) patients, IGH and FGFR3, or IGH and CCND1 are found in spatial proximity: IGH and MAF are not. This differs in B cells from t(14;16) patients and healthy donors where IGH is approximately equidistant to FGFR3, CCND1, and MAF, suggesting that gene organization in t(14;16) patients is different from that in t(4;14) or t(11;14) patients. Translocations between IGH and MAF may arise only in the absence of close proximity to the more frequent partners, as appears to be the case for individuals who develop t(14;16) MM.
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Affiliation(s)
- Lorri D Martin
- Department of Oncology, University of Alberta and Cross Cancer Institute, Edmonton, Alberta, Canada
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25
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Abstract
BACKGROUND Cancer cells utilise the glycolytic pathway even when adequate oxygen is present, a phenomenon known as the Warburg effect. We examined whether this system is operative in multiple myeloma (MM) cells and whether glycolysis inhibition is a potential therapeutic modality. METHODS The MM cells were purified from 59 patients using CD138-immunomagnetic beads. The expression levels of genes associated with glycolysis, c-MYC, GLUT1, LDHA, HIF1A and pyruvate dehydrogenase kinase-1 (PDK1) were determined by real-time PCR. Glucose consumption and lactate production by MM cell lines were analysed. Oxamate, an LDH inhibitor, and dichloroacetate (DCA), a PDK1 inhibitor, were employed. Inhibition of PDK1 expression was achieved using a siRNA. RESULTS High LDHA expression was found to be an indicator of poor prognosis. It was also positively correlated with the expression of PDK1, c-MYC and GLUT1. Greater glucose consumption and lactate production in MM cells was associated with higher LDHA expression. All the glycolysis inhibitors (oxamate, DCA and PDK1 siRNA) induced apoptosis in MM cells. DCA combined with bortezomib showed additive cytotoxic effects. CONCLUSION The present data suggest that the Warburg effect is operative in MM cells. As PDK1 is not overexpressed in normal tissues, PDK1 inhibition could serve as a novel therapeutic approach.
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26
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Robbiani DF, Nussenzweig MC. Chromosome translocation, B cell lymphoma, and activation-induced cytidine deaminase. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2012; 8:79-103. [PMID: 22974238 DOI: 10.1146/annurev-pathol-020712-164004] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Studies of B cell lymphomas in the early 1980s led to the cloning of genes (c-MYC and IGH) at a chromosome translocation breakpoint. A rush followed to identify recurrently translocated genes in all types of cancer, which led to remarkable advances in our understanding of cancer genetics. B lymphocyte tumors commonly bear chromosome translocations to immunoglobulin genes, which points to a role for antibody gene diversification processes in tumorigenesis. The discovery of activation-induced cytidine deaminase (AID) and the use of murine models to study translocation have led to a new understanding of how these events contribute to the genesis of lymphomas. Here, we review these advances with a focus on AID and insights gained from the study of translocations in primary cells.
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Affiliation(s)
- Davide F Robbiani
- Laboratory of Molecular Immunology and Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10065, USA.
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27
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Zingone A, Kuehl WM. Pathogenesis of monoclonal gammopathy of undetermined significance and progression to multiple myeloma. Semin Hematol 2011; 48:4-12. [PMID: 21232653 DOI: 10.1053/j.seminhematol.2010.11.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Monoclonal gammopathy of undetermined significance (MGUS), including immunoglobulin light chain only MGUS, is an age-dependent premalignant tumor that is present in about 4% of Caucasian individuals over the age of 50 years. It is comprised of two different kinds of tumors: about 15% lymphoid or lymphoplasmacytoid MGUS and the remainder plasma cell MGUS. Plasma cell MGUS is stable but can sporadically progress to multiple myeloma (MM) at an average rate of about 1% per year. Most, if not all, MM tumors are preceded by plasma cell MGUS, which shares four partially overlapping oncogenic features with MM. It presently is not possible to unequivocally distinguish an MGUS tumor cell from an MM tumor cell. However, two models based on clinical laboratory tests indicate that it is possible to stratify MGUS tumors into groups that have average rates of progression as low as 0.26% per year and as high as 12% per year.
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Affiliation(s)
- Adriana Zingone
- Medical Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20889-5105, USA
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28
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Evidence for ongoing DNA damage in multiple myeloma cells as revealed by constitutive phosphorylation of H2AX. Leukemia 2011; 25:1344-53. [PMID: 21566653 DOI: 10.1038/leu.2011.94] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
DNA double-strand breaks (DSBs) are deleterious lesions that can lead to chromosomal anomalies, genomic instability and cancer. The histone protein H2AX has an important role in the DNA damage response (DDR) and the presence of phospho-H2AX (γH2AX) nuclear foci is the hallmark of DSBs. We hypothesize that ongoing DNA damage provides a mechanism by which chromosomal abnormalities and intratumor heterogeneity are acquired in malignant plasma cells (PCs) in patients with multiple myeloma (MM). Therefore, we assessed PCs from patients with the premalignant condition, monoclonal gammopathy of undetermined significance (MGUS) and MM, as well as human MM cell lines (HMCLs) for evidence of DSBs. γH2AX foci were detected in 2/5 MGUS samples, 37/40 MM samples and 6/6 HMCLs. Notably, the DSB response protein 53BP1 colocalized with γH2AX in both MM patient samples and HMCLs. Treatment with wortmannin decreased phosphorylation of H2AX and suggests phosphoinositide (PI) 3-kinases and/or PI3-kinase-like family members underlie the presence of γH2AX foci in MM cells. Taken together, these data imply that ongoing DNA damage intensifies across the disease spectrum of MGUS to MM and may provide a mechanism whereby clonal evolution occurs in the monoclonal gammopathies.
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29
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Evaluating the clonal hierarchy in light-chain multiple myeloma: implications against the myeloma stem cell hypothesis. Leukemia 2011; 25:1213-6. [DOI: 10.1038/leu.2011.70] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Abstract
In many B-cell lymphomas, chromosomal translocations are biologic and diagnostic hallmarks of disease. An intriguing subset is formed by the so-called double- hit (DH) lymphomas that are defined by a chromosomal breakpoint affecting the MYC/8q24 locus in combination with another recurrent breakpoint, mainly a t(14;18)(q32;q21) involving BCL2. Recently, these lymphomas have received increased attention, which contributed to the introduction of a novel category of lymphomas in the 2008 WHO classification, "B cell lymphoma unclassifiable with features intermediate between DLBCL and BL." In this review we explore the existing literature for the most recurrent types of DH B-cell lymphomas and the involved genes with their functions, as well as their pathology and clinical aspects including therapy and prognosis. The incidence of aggressive B-cell lymphomas other than Burkitt lymphoma with a MYC breakpoint and in particular a double hit is difficult to assess, because screening by methods like FISH has not been applied on large, unselected series, and the published cytogenetic data may be biased to specific categories of lymphomas. DH lymphomas have been classified heterogeneously but mostly as DLBCL, the majority having a germinal center phenotype and expression of BCL2. Patients with DH lymphomas often present with poor prognostic parameters, including elevated LDH, bone marrow and CNS involvement, and a high IPI score. All studies on larger series of patients suggest a poor prognosis, also if treated with RCHOP or high-intensity treatment modalities. Importantly, this poor outcome cannot be accounted for by the mere presence of a MYC/8q24 breakpoint. Likely, the combination of MYC and BCL2 expression and/or a related high genomic complexity are more important. Compared to these DH lymphomas, BCL6(+)/MYC(+) DH lymphomas are far less common, and in fact most of these cases represent BCL2(+)/BCL6(+)/MYC(+) triple-hit lymphomas with involvement of BCL2 as well. CCND1(+)/MYC(+) DH lymphomas with involvement of 11q13 may also be relatively frequent, the great majority being classified as aggressive variants of mantle cell lymphoma. This suggests that activation of MYC might be an important progression pathway in mantle cell lymphoma as well. Based on clinical significance and the fact that no other solid diagnostic tools are available to identify DH lymphomas, it seems advisable to test all diffuse large B-cell and related lymphomas for MYC and other breakpoints.
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Abstract
Plasmablastic lymphoma (PBL) is an aggressive lymphoma characterized by a terminally differentiated B-cell phenotype that usually occurs in the immunocompromised or elderly patients. Although the clinical and pathologic characteristics of these tumors have been defined, the genetic alterations involved in their pathogenesis are not well known. In this study, we have investigated the chromosomal alterations of MYC, BCL2, BCL6, MALT1, PAX5, and IGH loci using fluorescence in situ hybridization in 42 PBL and 3 extracavitary primary effusion lymphomas. MYC rearrangements were identified in 20 of 41 (49%) PBL and the immunoglobulin (IG) genes were the partners in most tumors. MYC rearrangements were more common in Epstein-Barr virus (EBV)-positive (14 of 19, 74%) than EBV-negative (9 of 21, 43%) tumors (P<0.05). No rearrangements of BCL2, BCL6, MALT1, or PAX5 were detected in any PBL but gains of these loci were observed in 31% to 41% of the cases examined. Twelve of the 40 PBL in which 3 or more loci could be investigated had multiple simultaneous gains in 3 or more loci. No differences in the survival of the patients according to MYC were observed but the 4 patients with the longest survival (>50 mo) had no or low number of gains (<3). No rearrangements of any of these loci were seen in the primary effusion lymphomas. In conclusion, PBL are genetically characterized by frequent IG/MYC translocations and gains in multiple chromosomal loci. The oncogenic activation of MYC in these lymphomas may be an important pathogenetic element associated with EBV infection.
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32
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Kyrtsonis MC, Bartzis V, Papanikolaou X, Koulieris E, Georgiou G, Dimou M, Tzenou T, Panayiotidis P. Genetic and molecular mechanisms in multiple myeloma: a route to better understand disease pathogenesis and heterogeneity. APPLICATION OF CLINICAL GENETICS 2010; 3:41-51. [PMID: 23776351 PMCID: PMC3681163 DOI: 10.2147/tacg.s7456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Multiple myeloma (MM) is a heterogeneous plasma cell neoplasm presenting with a wide range of clinical manifestations. In spite of the availability of very performing treatment modalities, survival is highly varying, ranging from a few months to several years. Underlying genetic and microenvironmental mechanisms are thought to be responsible for clinical heterogeneity. Disease etiology is unknown but progresses in the understanding of its pathogenesis have shown that MM precursor cell transformation into a malignant one occurs in a multistep process. Possibly during class switch recombination a primary genetic event takes place. With the occurrence of additional events and the support of bone marrow microenvironmental cells, neoplastic plasma cells actively proliferate and disease behavior may change. Recurrent translocations involving the IgH locus (11q13, 4p16, 16q23, 21q12, and 6p21), deletions of chromosome 13, trisomies of chromosomes 3, 5, 9, 11, 15, 19, and 21, and dysregulated expression of cyclin D genes, are considered initiating or primary events. Alterations related to further disease transformation and adverse prognosis are deletion of 17p13, c-myc translocations, and gains of chromosome 1q21. In relation to the underlying genetic defects, disease subgroups are recognized. Accordingly treatment effectiveness may differ among groups. Intense research is ongoing in this field.
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Affiliation(s)
- Marie-Christine Kyrtsonis
- First Department of Propedeutic Internal Medicine, National and Kapodistrian University of Athens, Laikon Hospital, Greece ; Department of Hematology, National and Kapodistrian University of Athens, Laikon Hospital, Greece
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Fiancette R, Amin R, Truffinet V, Vincent-Fabert C, Cogné N, Cogné M, Denizot Y. A myeloma translocation-like model associating CCND1 with the immunoglobulin heavy-chain locus 3' enhancers does not promote by itself B-cell malignancies. Leuk Res 2010; 34:1043-51. [PMID: 20018375 DOI: 10.1016/j.leukres.2009.11.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Revised: 11/17/2009] [Accepted: 11/21/2009] [Indexed: 12/01/2022]
Abstract
Cyclin D1 overexpression is associated with mantle cell lymphoma and multiple myeloma. In myeloma, it often results from chromosomal translocations linking the CCND1 gene to the 3' part of the IgH locus constant region. This region includes a single and potent transcriptional regulatory region (RR) 3' of the Calpha gene mostly active in mature B-cells. To check whether this RR alone was sufficient to deregulate CCND1, we generated mice carrying a 3'IgH RR-driven human CCND1 transgene and specifically up-regulating cyclin D1 expression in B-cells. In transgenic B-cells, cyclin D1 enforced cell cycle entry in response to various stimuli (LPS, anti-IgM, anti-CD40) but also increased cell death, so that exaggerated proliferation did not result in peripheral lymphocytosis. Despite exaggerated B-cell entry into G(1) phase, malignant lymphoproliferation did not occur either. Crossing of CCND1-3'IgH RR mice with c-myc-3'IgH RR mice did not reveal accelerated tumorigenesis as compared with c-myc-3'IgH RR mice alone. The data presented here demonstrate that the 3'IgH RR-mediated deregulation of CCND1 in mature B-cells cannot by itself trigger the development of lymphomas and strengthen the concept that cyclin D1 per se is not an armful proto-oncogene. Rather its overexpression in several malignancies might be only a stigma of lymphomagenesis or represent a single hit within a multiple hit process.
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Affiliation(s)
- Rémi Fiancette
- UMR CNRS 6101, Centre National de la Recherche Scientifique, Université de Limoges, 2 rue Dr. Marcland, 87025 Limoges, France
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Martin LD, Belch AR, Pilarski LM. Promiscuity of translocation partners in multiple myeloma. J Cell Biochem 2010; 109:1085-94. [DOI: 10.1002/jcb.22499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Dib A, Glebov OK, Shou Y, Singer RH, Kuehl WM. A der(8)t(8;11) chromosome in the Karpas-620 myeloma cell line expresses only cyclin D1: yet both cyclin D1 and MYC are repositioned in close proximity to the 3'IGH enhancer. DNA Repair (Amst) 2008; 8:330-5. [PMID: 19064000 DOI: 10.1016/j.dnarep.2008.11.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2008] [Revised: 11/03/2008] [Accepted: 11/05/2008] [Indexed: 01/24/2023]
Abstract
The Karpas-620 human myeloma cell line (HMCL) expresses high levels of Cyclin D1 (CCND1), but has a der(8)t(8;11) and a der(14)t(8;14), and not a conventional t(11;14). Fluorescent in situ hybridization (FISH) and array comparative genomic hybridization (aCGH) studies suggest that der(14)t(11;14) from a primary translocation underwent a secondary translocation with chromosome 8 to generate der(8)t(8;[14];11) and der(14)t(8;[11];14). Both secondary derivatives share extensive identical sequences from chromosomes 8, 11, and 14, including MYC and the 3' IgH enhancers. Der(14), with MYC located approximately 700 kb telomeric to the 3'IGH enhancer, expresses MYC. By contrast, der(8), with both CCND1 and MYC repositioned near a 3'IGH enhancer, expresses CCND1, which is telomeric of the enhancer, but not MYC, which is centromeric to the enhancer. The secondary translocation that dysregulated MYC resulted in extensive regions from both donor chromosomes being transmitted to both derivative chromosomes, suggesting a defect in DNA recombination or repair in the myeloma tumor cell.
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Affiliation(s)
- Amel Dib
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20889-5101, USA
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Dib A, Gabrea A, Glebov OK, Bergsagel PL, Kuehl WM. Characterization of MYC translocations in multiple myeloma cell lines. J Natl Cancer Inst Monogr 2008:25-31. [PMID: 18647998 DOI: 10.1093/jncimonographs/lgn011] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Translocations involving an MYC gene (c >> N >>L) are very late tumor progression events and provide a paradigm for secondary translocations in multiple myeloma. Using a combination of fluorescent in situ hybridization and comparative genomic hybridization arrays (aCGH), we have identified rearrangements of an MYC gene in 40 of 43 independent myeloma cell lines. A majority of MYC translocations involve an Ig locus (IgH > Iglambda >> Igkappa), but the breakpoints only infrequently occur near or within switch regions or V(D)J sequences. Surprisingly, about 40% of MYC translocations do not involve an Ig locus. The MYC translocations mostly are nonreciprocal translocations or insertions, often with the involvement of three chromosomes and sometimes with associated duplication, amplification, inversion, and other associated chromosomal abnormalities. High-density aCGH analyses should facilitate the cloning of MYC breakpoints, enabling the determination of their structures and perhaps elucidating how rearrangements not involving an Ig gene cause dysregulation of an MYC gene.
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Affiliation(s)
- Amel Dib
- National Cancer Institute, Bethesda, MD, USA
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Gabrea A, Martelli ML, Qi Y, Roschke A, Barlogie B, Shaughnessy JD, Sawyer JR, Kuehl WM. Secondary genomic rearrangements involving immunoglobulin or MYC loci show similar prevalences in hyperdiploid and nonhyperdiploid myeloma tumors. Genes Chromosomes Cancer 2008; 47:573-90. [PMID: 18381641 DOI: 10.1002/gcc.20563] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The pathogenesis of multiple myeloma (MM) is thought to involve at least two pathways, which generate hyperdiploid (HRD) or nonhyperdiploid (NHRD) tumors, respectively. Apart from chromosome content, the two pathways are distinguished by five primary immunoglobulin heavy chain (IGH) rearrangements (4p16, FGFR3, and MMSET; 6p21, CCND3; 11q13, CCND1; 16q23, MAF; 20q12, MAFB) that are present mainly in NHRD tumors. To determine the prevalence and structures of IGH, immunoglobulin (IG) light chain, and MYC genomic rearrangements in MM, we have done comprehensive metaphase fluorescent in situ hybridization analyses on 48 advanced MM tumors and 47 MM cell lines. As expected, the prevalence of the five primary IGH rearrangements was nearly 70% in NHRD tumors, but only 12% in HRD tumors. However, IGH rearrangements not involving one of the five primary partners, and IG light chain rearrangements, have a similar prevalence in HRD and NHRD tumors. In addition, MYC rearrangements, which are thought to be late progression events that sometimes do not involve an IG heavy or light chain locus, also have a similar prevalence in HRD and NHRD tumors. In contrast to the primary IGH rearrangements, which usually are simple balanced translocations, these other IG rearrangements usually have complex structures, as previously described for MYC rearrangements in MM. We conclude that IG light chain and MYC rearrangements, as well as secondary IGH rearrangements, make similar contributions to the progression of both HRD and NHRD MM tumors.
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Affiliation(s)
- Ana Gabrea
- Genetics Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA.
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Chng WJ, Glebov O, Bergsagel PL, Kuehl WM. Genetic events in the pathogenesis of multiple myeloma. Best Pract Res Clin Haematol 2008; 20:571-96. [PMID: 18070707 DOI: 10.1016/j.beha.2007.08.004] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The genetics of myeloma has been increasingly elucidated in recent years. Recurrent genetic events, and also biologically distinct and clinically relevant genetic subtypes of myeloma have been defined. This has facilitated our understanding of the molecular pathogenesis of the disease. In addition, some genetic abnormalities have proved to be highly reproducible prognostic factors. With the expanding therapeutic armamentarium, it is time to include genetic assessment as part of clinical evaluation of myeloma patients to guide management. In this review we examine the role of various genetic abnormalities in the molecular pathogenesis of myeloma, and the use of such abnormalities in disease classification, prognosis and clinical management.
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Affiliation(s)
- W J Chng
- Mayo Clinic Arizona, Scottsdale, AZ 85260, USA
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González D, van der Burg M, García-Sanz R, Fenton JA, Langerak AW, González M, van Dongen JJM, San Miguel JF, Morgan GJ. Immunoglobulin gene rearrangements and the pathogenesis of multiple myeloma. Blood 2007; 110:3112-21. [PMID: 17634408 DOI: 10.1182/blood-2007-02-069625] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
AbstractThe ability to rearrange the germ-line DNA to generate antibody diversity is an essential prerequisite for the production of a functional repertoire. While this is essential to prevent infections, it also represents the “Achilles heal” of the B-cell lineage, occasionally leading to malignant transformation of these cells by translocation of protooncogenes into the immunoglobulin (Ig) loci. However, in evolutionary terms this is a small price to pay for a functional immune system. The study of the configuration and rearrangements of the Ig gene loci has contributed extensively to our understanding of the natural history of development of myeloma. In addition to this, the analysis of Ig gene rearrangements in B-cell neoplasms provides information about the clonal origin of the disease, prognosis, as well as providing a clinical useful tool for clonality detection and minimal residual disease monitoring. Herein, we review the data currently available on both Ig gene rearrangements and protein patterns seen in myeloma with the aim of illustrating how this knowledge has contributed to our understanding of the pathobiology of myeloma.
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Affiliation(s)
- David González
- Section of Haemato-Oncology, Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey, UK
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Edry E, Melamed D. Class switch recombination: a friend and a foe. Clin Immunol 2007; 123:244-51. [PMID: 17500041 DOI: 10.1016/j.clim.2007.02.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2007] [Revised: 02/06/2007] [Accepted: 02/06/2007] [Indexed: 11/23/2022]
Abstract
The effector functions of the antibody are determined by the heavy chain constant region (CH). During CSR the primarily expressed mu constant region (Cmu) of the heavy chain is replaced with a downstream isotype Cgamma, Calpha or Cepsilon. The murine immunoglobulin heavy chain (IgH) locus contains eight different CH genes. Class switch recombination (CSR) involves a recombination between two different repetitive switch (S) region sequences, located upstream of each CH gene and the deletion of the intervening DNA. However, this protecting mechanism is also involved in aberrant chromosomal translocations and generation of B cell malignancies. It is also involved in susceptibility to autoimmunity. The current review focuses on the basic mechanism of CSR and the adverse outcomes that it may cause.
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Affiliation(s)
- Efrat Edry
- Department of Immunology, Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
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Christensen JH, Abildgaard N, Plesner T, Nibe A, Nielsen O, Sørensen AG, Kerndrup GB. Interphase fluorescence in situ hybridization in multiple myeloma and monoclonal gammopathy of undetermined significance without and with positive plasma cell identification: analysis of 192 cases from the Region of Southern Denmark. ACTA ACUST UNITED AC 2007; 174:89-99. [PMID: 17452249 DOI: 10.1016/j.cancergencyto.2006.11.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2006] [Revised: 11/09/2006] [Accepted: 11/21/2006] [Indexed: 11/29/2022]
Abstract
Interphase fluorescence in-situ hybridization (i-FISH) was used to investigate 192 patients with multiple myeloma (MM; n = 182) and benign monoclonal gammopathy of undetermined significance (MGUS; n = 10). Of the 182 MM cases, 132 were investigated without and 50 with positive plasma cell identification (PC-ID+); 134 were investigated at diagnosis, 32 at time of progression, 7 at time of relapse, and 9 were investigated with partial remission or no response. The FISH analysis detected 11q23 (n = 61), 13q13 approximately q14 (n = 181), 14q32 (n = 121), 17p13.1 (n = 181), t(4;14) (n = 76), and t(11;14) (n = 73). Of the 132 patients investigated without PC-ID+, 61 (46%) showed chromosomal abnormalities, compared with 45 of 49 of evaluable cases (92%) with PC-ID+. The increase in abnormal cases identified was due mainly to the detection of more cases with 13q-, 17p-, and der(14)(q32). G-banding cytogenetics was performed in 72 patients; abnormalities were revealed in 19 cases (26%). Concordance between G-banding and i-FISH for one or more aberrations was found in 14 patients. Translocation (11;14) was detected by both methods in four of five cases. In four out of seven cases with either near-tetraploidy/triploidy or hypoploidy in the G-banded karyotypes, the modal number in the G-banded karyotypes could not be elucidated with certainty with i-FISH. Three of the 10 MGUS patients showed abnormalities. In conclusion, PC-ID+ is important for the detection of structural aberrations and disclosing translocations involving 14q32. Of these, translocations t(4;14) constituted 9% and t(11;14), 20%. Finally, based on the small number of cytogenetically abnormal cases, it is recommended to include cytogenetics (and, for example, the DNA index) in the prognostic armamentarium.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Chromosome Aberrations
- Chromosome Banding
- Chromosomes, Human, Pair 11
- Chromosomes, Human, Pair 13
- Chromosomes, Human, Pair 14
- Chromosomes, Human, Pair 17
- Chromosomes, Human, Pair 4
- Denmark
- Female
- Follow-Up Studies
- Humans
- In Situ Hybridization, Fluorescence/methods
- Interphase
- Male
- Middle Aged
- Monoclonal Gammopathy of Undetermined Significance/genetics
- Monoclonal Gammopathy of Undetermined Significance/pathology
- Multiple Myeloma/genetics
- Multiple Myeloma/pathology
- Plasma Cells/metabolism
- Plasma Cells/pathology
- Time Factors
- Translocation, Genetic
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Affiliation(s)
- Jacob H Christensen
- Department of Hematology, Odense University Hospital, Winsloewparken 15/3, DK-5000 Odense C, Denmark
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