51
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Menter T, Tzankov A. Lymphomas and Their Microenvironment: A Multifaceted Relationship. Pathobiology 2019; 86:225-236. [PMID: 31574515 DOI: 10.1159/000502912] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 08/24/2019] [Indexed: 11/19/2022] Open
Abstract
It has become evident that the microenvironment - lymphocytes, macrophages, fibroblasts as well as the extracellular matrix, cytokines, chemokines, and a plethora of other cells, structures and substances residing in the vicinity of tumor cells - plays an important part in the maintenance of cancer growth and survival. This is also relevant in lymphomas. In this review, we give an outline on the importance of the microenvironment for tumors in general and lymphomas in particular, by highlighting certain basic principles of tumor-microenvironment interaction. The relationship of lymphomas and their microenvironment is multifaceted: lymphoma cells need growth factors and cytokines derived from microenvironmental cells for their sustenance and growth. On the contrary, many lymphomas silence or at least deregulate the immune system to escape recognition and subsequent elimination by immune cells, while giving advantage to suppressive microenvironmental compounds such as M2 polarized macrophages, regulatory T-cells, mast cells, and immunosuppressive fibroblasts. We also give a detailed insight across different lymphoma types to show the variety of tumor-microenvironment interactions. Due to its tremendous importance, the microenvironment has also become a new target for oncologic therapy. The most important finding concerning lymphomas with a focus on immunomodulatory substances is also, therefore, highlighted.
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Affiliation(s)
- Thomas Menter
- Institute of Medical Genetics and Pathology, University of Basel Hospital, Basel, Switzerland
| | - Alexandar Tzankov
- Institute of Medical Genetics and Pathology, University of Basel Hospital, Basel, Switzerland,
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52
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Hashwah H, Bertram K, Stirm K, Stelling A, Wu CT, Kasser S, Manz MG, Theocharides AP, Tzankov A, Müller A. The IL-6 signaling complex is a critical driver, negative prognostic factor, and therapeutic target in diffuse large B-cell lymphoma. EMBO Mol Med 2019; 11:e10576. [PMID: 31515941 PMCID: PMC6783642 DOI: 10.15252/emmm.201910576] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 11/09/2022] Open
Abstract
Interleukin-6 (IL-6) is a growth factor for normal B cells and plasma cell-derived malignancies. Here, we show that the IL-6 signaling pathway is also active in a subset of diffuse large B-cell lymphoma (DLBCL) patients with particularly poor prognosis. Primary DLBCL cells and DLBCL cell lines expressing IL-6R engraft and form orthotopic lymphomas in humanized mice that ectopically produce human IL-6, and in mice reconstituted with a human immune system. We show that a subset of DLBCL cases have evolved mechanisms that ensure constitutive activation of the IL-6 signaling pathway, i.e., the expression of both chains of the IL-6R, the expression of the cytokine itself, and the mutational inactivation of a negative regulator of IL-6 signaling, SOCS1. IL-6 signaling promotes MYC-driven lymphomagenesis in a genetically engineered model, and treatment with the IL-6R-specific antibody tocilizumab reduces growth of primary DLBCL cells and of DLBCL cell lines in various therapeutic settings. The combined results uncover the IL-6 signaling pathway as a driver and negative prognosticator in aggressive DLBCL that can be targeted with a safe and well-tolerated biologic.
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Affiliation(s)
- Hind Hashwah
- Institute of Molecular Cancer Research, University of Zurich, Zürich, Switzerland
| | - Katrin Bertram
- Institute of Molecular Cancer Research, University of Zurich, Zürich, Switzerland
| | - Kristin Stirm
- Institute of Molecular Cancer Research, University of Zurich, Zürich, Switzerland
| | - Anna Stelling
- Institute of Molecular Cancer Research, University of Zurich, Zürich, Switzerland
| | - Cheuk-Ting Wu
- Institute of Molecular Cancer Research, University of Zurich, Zürich, Switzerland
| | - Sabrina Kasser
- Institute of Molecular Cancer Research, University of Zurich, Zürich, Switzerland
| | - Markus G Manz
- Department of Medical Oncology and Hematology, University Hospital Zurich and University of Zurich, Zürich, Switzerland.,Comprehensive Cancer Center Zurich, Zürich, Switzerland
| | - Alexandre P Theocharides
- Department of Medical Oncology and Hematology, University Hospital Zurich and University of Zurich, Zürich, Switzerland.,Comprehensive Cancer Center Zurich, Zürich, Switzerland
| | - Alexandar Tzankov
- Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | - Anne Müller
- Institute of Molecular Cancer Research, University of Zurich, Zürich, Switzerland.,Comprehensive Cancer Center Zurich, Zürich, Switzerland
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53
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Genetic polymorphism and transcriptional regulation of CREBBP gene in patient with diffuse large B-cell lymphoma. Biosci Rep 2019; 39:BSR20191162. [PMID: 31366566 PMCID: PMC6692565 DOI: 10.1042/bsr20191162] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 07/17/2019] [Accepted: 07/30/2019] [Indexed: 12/15/2022] Open
Abstract
In the present study, we aim to examine the relationship between genetic polymorphism and transcriptional expression of cyclic AMP response element binding protein (CREBBP) and the risk of diffuse large B-cell lymphoma (DLBCL). Two hundred and fifty healthy individuals and 248 DLBCL patients participated in the present study. The CREBBP rs3025684 polymorphism was detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The mRNA expression of CREBBP was tested by the real-time quantitative PCR (RT-qPCR). The allele A frequency of CREBBP rs3025684 in DLBCL patients was obviously higher than that of controls (P=0.01). No significant difference was detected between CREBBP rs3025684 polymorphism and clinical characteristics of DLBCL patients when subgrouped according to different parameters. The results demonstrated that the allele A of CREBBP rs3025684 increased the susceptibility to DLBCL (P=0.004), with a worse overall survival (OS) rate (P=0.002), a worse progression-free survival (PFS) rate (P=0.033) and poor prognosis (P=0.003) in DLCBL patients. Furthermore, the expression of CREBBP mRNA was considerably decreased in DLBCL patients as compared with controls (P<0.001), and the expression in patients with GG genotype was up-regulated in comparison with patients with GA and AA genotype (P=0.016 and P=0.001, respectively). However, no statistical differences were found in OS (P=0.201) and PFS (P=0.353) between the lower CREBBP mRNA level subgroup and higher CREBBP mRNA level subgroup. These data suggested that the CREBBP gene may be an important prognostic factor in DLBCL patients and perform an essential function in the development of DLBCL.
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54
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Mellert K, Martin M, Lennerz JK, Lüdeke M, Staiger AM, Kreuz M, Löffler M, Schmitz N, Trümper L, Feller AC, Hartmann S, Hansmann ML, Klapper W, Stein H, Rosenwald A, Ott G, Ziepert M, Möller P. The impact of SOCS1 mutations in diffuse large B-cell lymphoma. Br J Haematol 2019; 187:627-637. [PMID: 31407320 PMCID: PMC6899586 DOI: 10.1111/bjh.16147] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 06/11/2019] [Indexed: 01/01/2023]
Abstract
Mutations in SOCS1 are frequent in primary mediastinal B‐cell lymphoma and classical Hodgkin lymphoma. In the latter, SOCS1 mutations affect the length of the encoded protein (major mutations) and are associated with shorter patient survival. Two independent studies examined the prognostic impact of SOCS1 mutations in diffuse large B‐cell lymphoma (DLBCL) and showed differing results. This may be due to the small number of included patients, the heterogeneity of patients’ demographics and the distinct treatment schemes in these studies. To overcome the size limitations of these previous studies, we assessed SOCS1 mutations in the RICOVER‐60 cohort. The cohort uniformly consists of elderly patients (aged 61–80 years) treated with the CHOP‐14 scheme (cyclophosphamide, hydroxydaunorubicin, vincristine, prednisolone at 14‐day intervals) with or without an additional rituximab treatment. Patient outcomes were analysed with regard to overall SOCS1 mutation frequency, major and minor mutations and a novel impact‐based classifier – against the treatment modalities. Patients harbouring putative pathogenic SOCS1 mutations showed significant reduced overall survival within the CHOP plus rituximab group. Hence, putative pathogenic SOCS1 mutations seem to efface the beneficial effect of the therapeutic CD20 antibody. Comparing published data of whole exome and transcriptome sequencing of a large DLBCL cohort confirmed that predicted deleterious SOCS1 mutations forecast pre‐eminent survival in early onset DLBCL.
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Affiliation(s)
- Kevin Mellert
- Institute of Pathology, University Hospital, Ulm, Germany
| | - Melanie Martin
- Institute of Pathology, University Hospital, Ulm, Germany
| | | | - Manuel Lüdeke
- Institute of Human Genetics, University Hospital, Ulm, Germany
| | - Annette M Staiger
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Stuttgart, Germany.,Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, University of Tuebingen, Stuttgart, Germany
| | - Markus Kreuz
- Institute for Medical Informatics, Statistics and Epidemiology (IMISE), University of Leipzig, Leipzig, Germany
| | - Markus Löffler
- Institute for Medical Informatics, Statistics and Epidemiology (IMISE), University of Leipzig, Leipzig, Germany
| | | | | | | | - Sylvia Hartmann
- Senckenberg Institute of Pathology, Goethe University Hospital, Frankfurt am Main, Germany.,Reference and Consultant Centre for Lymph Node and Lymphoma Pathology, Goethe University Hospital, Frankfurt am Main, Germany
| | - Martin-Leo Hansmann
- Senckenberg Institute of Pathology, Goethe University Hospital, Frankfurt am Main, Germany.,Reference and Consultant Centre for Lymph Node and Lymphoma Pathology, Goethe University Hospital, Frankfurt am Main, Germany.,Frankfurt Institute of Advanced Studies, Goethe University, Frankfurt am Main, Germany
| | - Wolfram Klapper
- Institute of Pathology, Universitätsklinikum Schleswig-Holstein, Berlin, Germany
| | | | - Andreas Rosenwald
- Institute of Pathology, Universität Würzburg and Comprehensive Cancer Centre Mainfranken, Würzburg, Germany
| | - German Ott
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Stuttgart, Germany
| | - Marita Ziepert
- Institute for Medical Informatics, Statistics and Epidemiology (IMISE), University of Leipzig, Leipzig, Germany
| | - Peter Möller
- Institute of Pathology, University Hospital, Ulm, Germany
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55
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Zhou P, Blain AE, Newman AM, Zaka M, Chagaluka G, Adlar FR, Offor UT, Broadbent C, Chaytor L, Whitehead A, Hall A, O'Connor H, Van Noorden S, Lampert I, Bailey S, Molyneux E, Bacon CM, Bomken S, Rand V. Sporadic and endemic Burkitt lymphoma have frequent FOXO1 mutations but distinct hotspots in the AKT recognition motif. Blood Adv 2019; 3:2118-2127. [PMID: 31300419 PMCID: PMC6650741 DOI: 10.1182/bloodadvances.2018029546] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 04/14/2019] [Indexed: 12/22/2022] Open
Abstract
FOXO1 has an oncogenic role in adult germinal center-derived lymphomas, in which mutations, predominately within the AKT recognition motif, cause nuclear retention of FOXO1, resulting in increased cell proliferation. To determine the prevalence and distribution of FOXO1 mutations in pediatric Burkitt lymphoma (BL), we sequenced a large number of sporadic and endemic BL patient samples. We report a high frequency of FOXO1 mutations in both sporadic and endemic BL at diagnosis, occurring in 23/78 (29%) and 48/89 (54%) samples, respectively, as well as 8/16 (50%) cases at relapse. Mutations of T24 were the most common in sporadic BL but were rare in endemic cases, in which mutations of residue S22, also within the AKT recognition motif, were the most frequent. FOXO1 mutations were almost always present in the major tumor cell clone but were not associated with outcome. Analysis of other recurrent mutations reported in BL revealed that FOXO1 mutations were associated with mutations of DDX3X and ARID1A, but not MYC, TCF3/ID3, or members of the phosphatidylinositol 3-kinase signaling pathway. We further show common nuclear retention of the FOXO1 protein, irrespective of mutation status, suggesting alternative unknown mechanisms for maintaining FOXO1 transcriptional activity in BL. CRISPR/Cas9 knockout of FOXO1 in an endemic cell line produced a significant decrease in cell proliferation, supporting an oncogenic role for FOXO1 in endemic BL. Thus, FOXO1 is frequently mutated in both sporadic and endemic BL and may offer a potential therapeutic target for pediatric BL patients worldwide.
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Affiliation(s)
- Peixun Zhou
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Alex E Blain
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Alexander M Newman
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Masood Zaka
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - George Chagaluka
- Department of Paediatrics, College of Medicine, Queen Elizabeth Central Hospital, Blantyre, Malawi
| | - Filbert R Adlar
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Ugonna T Offor
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
- Department of Paediatric and Adolescent Haematology and Oncology, The Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Casey Broadbent
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Lewis Chaytor
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Amber Whitehead
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Amy Hall
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Hettie O'Connor
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Susan Van Noorden
- Department of Histopathology, Imperial College London, Hammersmith Hospital, London, United Kingdom
| | - Irvin Lampert
- Department of Histopathology, West Middlesex University Hospital, Isleworth, United Kingdom; and
| | - Simon Bailey
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
- Department of Paediatric and Adolescent Haematology and Oncology, The Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Elizabeth Molyneux
- Department of Paediatrics, College of Medicine, Queen Elizabeth Central Hospital, Blantyre, Malawi
| | - Chris M Bacon
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
- Department of Cellular Pathology, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Simon Bomken
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
- Department of Paediatric and Adolescent Haematology and Oncology, The Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Vikki Rand
- Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
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56
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Gao D, Liu Z. Cyclin D1 + large B-cell lymphoma with altered CCND1 and BCL-6 rearrangements: a diagnostic challenge. Biomark Res 2019; 7:11. [PMID: 31171971 PMCID: PMC6547582 DOI: 10.1186/s40364-019-0162-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 05/22/2019] [Indexed: 11/16/2022] Open
Abstract
Background A subset of diffuse large B-cell lymphoma may show aberrant cyclin D1 expression, which may be confused with blastoid mantle cell lymphoma. These cases usually lack of CCND1 gene rearrangement. Duplication of CCND1 gene was attributed to some of the cases with cyclin D1 expression. The mechanism of overexpression of CCND1 in other cases was not well documented. Case presentation We report a case of diffuse large B-cell lymphoma with cyclin D1 expression. The underlying mechanism for cyclin D1 expression was due to an abnormal gene rearrangement involving BCL-6 and CCND1, which was different from most reported cases. Rare cases with similar genetic profile were reported and were classified as diffuse large B-cell lymphoma. Conclusion The phenotype and genetic abnormalities of DLBCL with cyclin D1 overexpression can be complex and may be difficult to differentiate from blastoid and pleomorphic variants of mantle cell lymphoma.
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Affiliation(s)
- Da Gao
- 1Department of hematology and oncology, The affiliated hospital of Inner Mongolia Medical University, Hohhot, China
| | - Zach Liu
- 2Department of Pathology Rutgers University, New Brunswick, NJ USA
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57
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Evrard SM, Péricart S, Grand D, Amara N, Escudié F, Gilhodes J, Bories P, Traverse-Glehen A, Dubois R, Brousset P, Parrens M, Laurent C. Targeted next generation sequencing reveals high mutation frequency of CREBBP, BCL2 and KMT2D in high-grade B-cell lymphoma with MYC and BCL2 and/or BCL6 rearrangements. Haematologica 2018; 104:e154-e157. [PMID: 30309852 DOI: 10.3324/haematol.2018.198572] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
- Solène M Evrard
- Pathology and Cytology Department, CHU Toulouse, IUCT Oncopole .,Toulouse III Paul Sabatier University.,Inserm, UMR1037 Centre de Recherche en Cancerologie de Toulouse, laboratoire d'excellence TOUCAN
| | - Sarah Péricart
- Pathology and Cytology Department, CHU Toulouse, IUCT Oncopole
| | - David Grand
- Pathology and Cytology Department, CHU Toulouse, IUCT Oncopole
| | - Nadia Amara
- Pathology and Cytology Department, CHU Toulouse, IUCT Oncopole
| | | | - Julia Gilhodes
- Department of Biostatistics, IUCT-Oncopole, CHU Toulouse
| | - Pierre Bories
- Regional Cancer Network Onco-occitanie, IUCT-Oncopole, Toulouse
| | | | - Romain Dubois
- Institut de Pathologie, CHU Lille, Avenue Oscar Lambret
| | - Pierre Brousset
- Pathology and Cytology Department, CHU Toulouse, IUCT Oncopole.,Toulouse III Paul Sabatier University.,Inserm, UMR1037 Centre de Recherche en Cancerologie de Toulouse, laboratoire d'excellence TOUCAN
| | | | - Camille Laurent
- Pathology and Cytology Department, CHU Toulouse, IUCT Oncopole.,Toulouse III Paul Sabatier University.,Inserm, UMR1037 Centre de Recherche en Cancerologie de Toulouse, laboratoire d'excellence TOUCAN
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58
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Genetic alterations of 9p24 in lymphomas and their impact for cancer (immuno-)therapy. Virchows Arch 2018; 474:497-509. [DOI: 10.1007/s00428-018-2438-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 06/25/2018] [Accepted: 08/13/2018] [Indexed: 12/25/2022]
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59
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The tumor suppressive TGF-β/SMAD1/S1PR2 signaling axis is recurrently inactivated in diffuse large B-cell lymphoma. Blood 2018; 131:2235-2246. [PMID: 29615404 DOI: 10.1182/blood-2017-10-810630] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 03/25/2018] [Indexed: 12/11/2022] Open
Abstract
The sphingosine-1-phosphate receptor S1PR2 and its downstream signaling pathway are commonly silenced in diffuse large B-cell lymphoma (DLBCL), either by mutational inactivation or through negative regulation by the oncogenic transcription factor FOXP1. In this study, we examined the upstream regulators of S1PR2 expression and have newly identified the transforming growth factor-β (TGF-β)/TGF-βR2/SMAD1 axis as critically involved in S1PR2 transcriptional activation. Phosphorylated SMAD1 directly binds to regulatory elements in the S1PR2 locus as assessed by chromatin immunoprecipitation, and the CRISPR-mediated genomic editing of S1PR2, SMAD1, or TGFBR2 in DLBCL cell lines renders cells unresponsive to TGF-β-induced apoptosis. DLBCL clones lacking any 1 of the 3 factors have a clear growth advantage in vitro, as well as in subcutaneous xenotransplantation models, and in a novel model of orthotopic growth of DLBCL cells in the spleens and bone marrow of MISTRG mice expressing various human cytokines. The loss of S1pr2 induces hyperproliferation of the germinal center (GC) B-cell compartment of immunized mice and accelerates MYC-driven lymphomagenesis in spontaneous and serial transplantation models. The specific loss of Tgfbr2 in murine GC B-cell phenocopies the effects of S1pr2 loss on GC B-cell hyperproliferation. Finally, we show that SMAD1 expression is aberrantly downregulated in >85% of analyzed DLBCL patients. The combined results uncover an important novel tumor suppressive function of the TGF-β/TGF-βR2/SMAD1/S1PR2 axis in DLBCL, and show that DLBCL cells have evolved to inactivate the pathway at the level of SMAD1 expression.
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60
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Qian Q, Lv Y, Li P. SOCS1 is associated with clinical progression and acts as an oncogenic role in triple-negative breast cancer. IUBMB Life 2018. [PMID: 29527785 DOI: 10.1002/iub.1728] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Suppressors of cytokine signaling 1 (SOCS1) is a member of SOCS family and acts as negative regulators of cytokine signaling by direct inhibition of receptor-associated janus kinases. The clinical significance and biological function of SOCS1 in variant tumor tissues and at variant tumor stages is still controversial. The aim of our study is to confirm the expression status of SOCS1 in triple-negative breast cancer (TNBC) tissues and cell lines, and explore the clinical value and biological function of SOCS1 in TNBC. In microarray data sets (GDS2250 and GDS817), we observed SOCS1 was overexpressed in TNBC tissues and cell line compared with normal mammary tissues and mammary epithelial cell line, or non-TNBC tissues and cell line. Furthermore, SOCS1 mRNA and protein overexpression were confirmed in TNBC tissues and cell lines compared with normal mammary tissues and mammary epithelial cell lines or non-TNBC tissues and cell lines. SOCS1 protein overexpression was obviously associated with advanced clinical stage, large tumor size, more lymph node metastasis, present distant metastasis, and malign histological grade. Downregulation of SOCS1 expression suppressed TNBC cells proliferation and promoted cell apoptosis. In conclusion, SOCS1 is associated with clinical progression in TNBC patients and acts as an oncogenic role in regulating TNBC cells proliferation and apoptosis. © 2018 IUBMB Life, 70(4):320-327, 2018.
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Affiliation(s)
- Qian Qian
- Department of Thyroid and Breast Surgery, Jining No.1 People's Hospital, Jining, Shandong, China
| | - Yuetao Lv
- Department of Thyroid and Breast Surgery, Jining No.1 People's Hospital, Jining, Shandong, China
| | - Peng Li
- Department of Thyroid and Breast Surgery, Jining No.1 People's Hospital, Jining, Shandong, China
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61
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Menter T, Tzankov A. Mechanisms of Immune Evasion and Immune Modulation by Lymphoma Cells. Front Oncol 2018; 8:54. [PMID: 29564225 PMCID: PMC5845888 DOI: 10.3389/fonc.2018.00054] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 02/20/2018] [Indexed: 02/06/2023] Open
Abstract
Purpose Targeting cancer cells by modulating the immune system has become an important new therapeutic option in many different malignancies. Inhibition of CTLA4/B7 and PD1/PDL1 signaling is now also being investigated and already successfully applied to various hematologic malignancies. Methods A literature review of PubMed and results of our own studies were compiled in order to give a comprehensive overview on this topic. Results We elucidate the pathophysiological role of immunosuppressive networks in lymphomas, ranging from changes in the cellular microenvironment composition to distinct signaling pathways such as PD1/PDL1 or CTLA4/B7/CD28. The prototypical example of a lymphoma manipulating and thereby silencing the immune system is Hodgkin lymphoma. Also other lymphomas, e.g., primary mediastinal B-cell lymphoma and some Epstein–Barr virus (EBV)-driven malignancies, use analogous survival strategies, while diffuse large B-cell lymphoma of the activated B-cell type, follicular lymphoma and angioimmunoblastic T-cell lymphoma to name a few, exert further immune escape strategies each. These insights have already led to new treatment opportunities and results of the most important clinical trials based on this concept are briefly summarized. Immune checkpoint inhibition might also have severe side effects; the mechanisms of the rather un(der)recognized hematological side effects of this treatment approach are discussed. Conclusion Silencing the host’s immune system is an important feature of various lymphomas. Achieving a better understanding of distinct pathways of interactions between lymphomas and different immunological microenvironment compounds yields substantial potential for new treatment concepts.
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Affiliation(s)
- Thomas Menter
- Institute of Pathology and Medical Genetics, University Hospital of Basel, Basel, Switzerland
| | - Alexandar Tzankov
- Institute of Pathology and Medical Genetics, University Hospital of Basel, Basel, Switzerland
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62
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Kapadia B, Nanaji NM, Bhalla K, Bhandary B, Lapidus R, Beheshti A, Evens AM, Gartenhaus RB. Fatty Acid Synthase induced S6Kinase facilitates USP11-eIF4B complex formation for sustained oncogenic translation in DLBCL. Nat Commun 2018; 9:829. [PMID: 29483509 PMCID: PMC5827760 DOI: 10.1038/s41467-018-03028-y] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 01/15/2018] [Indexed: 01/29/2023] Open
Abstract
Altered lipid metabolism and aberrant protein translation are strongly associated with cancerous outgrowth; however, the inter-regulation of these key processes is still underexplored in diffuse large B-cell lymphoma (DLBCL). Although fatty acid synthase (FASN) activity is reported to positively correlate with PI3K-Akt-mTOR pathway that can modulate protein synthesis, the precise impact of FASN inhibition on this process is still unknown. Herein, we demonstrate that attenuating FASN expression or its activity significantly reduces eIF4B (eukaryotic initiation factor 4B) levels and consequently overall protein translation. Through biochemical studies, we identified eIF4B as a bonafide substrate of USP11, which stabilizes and enhances eIF4B activity. Employing both pharmacological and genetic approaches, we establish that FASN-induced PI3K-S6Kinase signaling phosphorylates USP11 enhancing its interaction with eIF4B and thereby promoting oncogenic translation.
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MESH Headings
- Animals
- B-Lymphocytes/metabolism
- B-Lymphocytes/pathology
- Carcinogenesis/genetics
- Carcinogenesis/metabolism
- Carcinogenesis/pathology
- Cell Line, Tumor
- Eukaryotic Initiation Factors/genetics
- Eukaryotic Initiation Factors/metabolism
- Fatty Acid Synthase, Type I/genetics
- Fatty Acid Synthase, Type I/metabolism
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Lipid Metabolism/genetics
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/metabolism
- Lymphoma, Large B-Cell, Diffuse/pathology
- Mice
- Mice, Nude
- Neoplasm Transplantation
- Phosphatidylinositol 3-Kinases/genetics
- Phosphatidylinositol 3-Kinases/metabolism
- Phosphorylation
- Protein Binding
- Protein Biosynthesis
- Proto-Oncogene Proteins c-akt/genetics
- Proto-Oncogene Proteins c-akt/metabolism
- Ribosomal Protein S6 Kinases/genetics
- Ribosomal Protein S6 Kinases/metabolism
- Signal Transduction
- TOR Serine-Threonine Kinases/genetics
- TOR Serine-Threonine Kinases/metabolism
- Thiolester Hydrolases/genetics
- Thiolester Hydrolases/metabolism
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Affiliation(s)
- Bandish Kapadia
- Department of Medicine, Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD, 21201, USA
| | - Nahid M Nanaji
- Department of Veteran Affairs, Maryland Healthcare System, Baltimore, MD 21201, USA
- University of Maryland Medical Center, Baltimore, MD, 21201, USA
| | - Kavita Bhalla
- Department of Medicine, Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD, 21201, USA
| | - Binny Bhandary
- Department of Medicine, Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD, 21201, USA
| | - Rena Lapidus
- Department of Medicine, Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD, 21201, USA
| | - Afshin Beheshti
- Division of Hematology/Oncology, Molecular Oncology Research Institute, Tufts Medical Center, Boston, MA, 02111, USA
| | - Andrew M Evens
- Division of Hematology/Oncology, Molecular Oncology Research Institute, Tufts Medical Center, Boston, MA, 02111, USA
| | - Ronald B Gartenhaus
- Department of Medicine, Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD, 21201, USA.
- Veterans Administration Medical Center, Baltimore, MD, 21201, USA.
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63
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Franco F, González-Rincón J, Lavernia J, García JF, Martín P, Bellas C, Piris MA, Pedrosa L, Miramón J, Gómez-Codina J, Rodríguez-Abreu D, Machado I, Illueca C, Alfaro J, Provencio M, Sánchez-Beato M. Mutational profile of primary breast diffuse large B-cell lymphoma. Oncotarget 2017; 8:102888-102897. [PMID: 29262531 PMCID: PMC5732697 DOI: 10.18632/oncotarget.21986] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 10/03/2017] [Indexed: 01/09/2023] Open
Abstract
Primary breast lymphoma is a rare form of extra-nodal lymphoid neoplasm. The most common histological type is the diffuse large B-cell lymphoma, which represents 60–80% of all the cases. Our study analyzes the mutational profile of the primary lymphoma of the breast through targeted massive sequencing with a panel of 38 genes in a group of 17 patients with primary breast diffuse large B-cell lymphoma. Seventy-point-five percent of the patients presented with stage IE and 29.5% with stage IIE. 44% of the cases correspond to lymphomas with germinal center phenotype and 33.3% to activated B-cell. The genes with a higher mutational frequency include PIM1 (in 50% of the analyzed samples), MYD88 (39%), CD79B, PRDM1 and CARD11 (17%), KMT2D, TNFIAP3 and CREBBP (11%). The profile of mutant genes involves mostly the NFκB signaling pathway. The high frequency of mutations in PIM1 compared with other lymphomas may have implications in the clinical presentation and evolution of this type of lymphoma.
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Affiliation(s)
- Fernando Franco
- Medical Oncology Department, Hospital Universitario Puerta de Hierro, Madrid, Spain.,GOTEL (Spanish Lymphoma Oncology Group), Madrid, Spain
| | - Julia González-Rincón
- Group of Research in Lymphomas, Medical Oncology Department, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Madrid, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Javier Lavernia
- GOTEL (Spanish Lymphoma Oncology Group), Madrid, Spain.,Medical Oncology Department, Instituto Valenciano de Oncología, Valencia, Spain
| | - Juan F García
- Pathology Department, MD Anderson Cancer Center, Madrid, Spain
| | - Paloma Martín
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain.,Pathology Department, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Carmen Bellas
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain.,Pathology Department, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Miguel A Piris
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain.,Pathology Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - Lucia Pedrosa
- Group of Research in Lymphomas, Medical Oncology Department, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Madrid, Spain
| | - José Miramón
- GOTEL (Spanish Lymphoma Oncology Group), Madrid, Spain.,Medical Oncology Department, Hospital Serranía de Ronda, Málaga, Spain
| | - José Gómez-Codina
- GOTEL (Spanish Lymphoma Oncology Group), Madrid, Spain.,Medical Oncology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Delvys Rodríguez-Abreu
- GOTEL (Spanish Lymphoma Oncology Group), Madrid, Spain.,Medical Oncology Department, Hospital Universitario Insular de Gran Canaria, Las Palmas, Spain
| | - Isidro Machado
- Pathology Department, Instituto Valenciano de Oncología, Valencia, Spain
| | - Carmen Illueca
- Pathology Department, Instituto Valenciano de Oncología, Valencia, Spain
| | - Jesús Alfaro
- GOTEL (Spanish Lymphoma Oncology Group), Madrid, Spain.,Medical Oncology Department, Instituto Oncológico de Kutxa, Donostia, Spain
| | - Mariano Provencio
- Medical Oncology Department, Hospital Universitario Puerta de Hierro, Madrid, Spain.,GOTEL (Spanish Lymphoma Oncology Group), Madrid, Spain
| | - Margarita Sánchez-Beato
- GOTEL (Spanish Lymphoma Oncology Group), Madrid, Spain.,Group of Research in Lymphomas, Medical Oncology Department, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Madrid, Spain
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64
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Inactivation of CREBBP expands the germinal center B cell compartment, down-regulates MHCII expression and promotes DLBCL growth. Proc Natl Acad Sci U S A 2017; 114:9701-9706. [PMID: 28831000 DOI: 10.1073/pnas.1619555114] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The genes encoding the histone acetyl-transferases (HATs) CREB binding protein (CREBBP) and EP300 are recurrently mutated in the activated B cell-like and germinal center (GC) B cell-like subtypes of diffuse large B cell lymphoma (DLBCL). Here, we introduced a patient mutation into a human DLBCL cell line using CRISPR and deleted Crebbp and Ep300 in the GC B cell compartment of mice. CREBBP-mutant DLBCL clones exhibited reduced histone H3 acetylation, expressed significantly less MHCII, and grew faster than wild-type clones in s.c. and orthotopic xenograft models. Mice lacking Crebbp in GC B cells exhibited hyperproliferation of their GC compartment upon immunization, had reduced MHCII surface expression on GC cells, and developed accelerated MYC-driven lymphomas. Ep300 inactivation reproduced some, but not all, consequences of Crebbp inactivation. MHCII deficiency phenocopied the effects of CREBBP loss in spontaneous and serial transplantation models of MYC-driven lymphomagenesis, supporting the idea that the mutational inactivation of CREBBP promotes immune evasion. Indeed, the depletion of CD4+ T cells greatly facilitated the engraftment of lymphoma cells in serial transplantation models. In summary, we provide evidence that both HATs are bona fide tumor suppressors that control MHCII expression and promote tumor immune control; mutational inactivation of CREBBP, but not of EP300, has additional cell-intrinsic engraftment and growth-promoting effects.
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65
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Karube K, Enjuanes A, Dlouhy I, Jares P, Martin-Garcia D, Nadeu F, Ordóñez GR, Rovira J, Clot G, Royo C, Navarro A, Gonzalez-Farre B, Vaghefi A, Castellano G, Rubio-Perez C, Tamborero D, Briones J, Salar A, Sancho JM, Mercadal S, Gonzalez-Barca E, Escoda L, Miyoshi H, Ohshima K, Miyawaki K, Kato K, Akashi K, Mozos A, Colomo L, Alcoceba M, Valera A, Carrió A, Costa D, Lopez-Bigas N, Schmitz R, Staudt LM, Salaverria I, López-Guillermo A, Campo E. Integrating genomic alterations in diffuse large B-cell lymphoma identifies new relevant pathways and potential therapeutic targets. Leukemia 2017; 32:675-684. [PMID: 28804123 PMCID: PMC5843901 DOI: 10.1038/leu.2017.251] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/24/2017] [Accepted: 07/27/2017] [Indexed: 02/08/2023]
Abstract
Genome studies of diffuse large B-cell lymphoma (DLBCL) have revealed a large number of somatic mutations and structural alterations. However, the clinical significance of these alterations is still not well defined. In this study, we have integrated the analysis of targeted next-generation sequencing of 106 genes and genomic copy number alterations (CNA) in 150 DLBCL. The clinically significant findings were validated in an independent cohort of 111 patients. Germinal center B-cell and activated B-cell DLBCL had a differential profile of mutations, altered pathogenic pathways and CNA. Mutations in genes of the NOTCH pathway and tumor suppressor genes (TP53/CDKN2A), but not individual genes, conferred an unfavorable prognosis, confirmed in the independent validation cohort. A gene expression profiling analysis showed that tumors with NOTCH pathway mutations had a significant modulation of downstream target genes, emphasizing the relevance of this pathway in DLBCL. An in silico drug discovery analysis recognized 69 (46%) cases carrying at least one genomic alteration considered a potential target of drug response according to early clinical trials or preclinical assays in DLBCL or other lymphomas. In conclusion, this study identifies relevant pathways and mutated genes in DLBCL and recognizes potential targets for new intervention strategies.
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Affiliation(s)
- K Karube
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,Department of Pathology and Cell Biology, Graduate School of Medicine and Faculty of Medicine, University of the Ryukyus, Nishihara, Japan
| | - A Enjuanes
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | - I Dlouhy
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - P Jares
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | - D Martin-Garcia
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | - F Nadeu
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | | | - J Rovira
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - G Clot
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | - C Royo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - A Navarro
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | - B Gonzalez-Farre
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | - A Vaghefi
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - G Castellano
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - C Rubio-Perez
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Research Unit on Biomedical Informatics, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - D Tamborero
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Research Unit on Biomedical Informatics, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - J Briones
- Servei de Patologia, Hospital de Sant Pau, Barcelona, Spain
| | - A Salar
- Department of Pathology, Hospital del Mar, Universitat Pompeu Fabra, Barcelona, Spain
| | - J M Sancho
- ICO-Hospital Germans Trias i Pujol, Barcelona, Spain
| | - S Mercadal
- ICO-Hospital Duran i Reynals, L'Hospitalet, Barcelona, Spain
| | | | - L Escoda
- Department of Hematology, Hospital Universitari Joan XXIII, Tarragona, Spain
| | - H Miyoshi
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - K Ohshima
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - K Miyawaki
- Department of Medicine and Biosystemic Science, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - K Kato
- Department of Medicine and Biosystemic Science, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - K Akashi
- Department of Medicine and Biosystemic Science, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - A Mozos
- Servei de Patologia, Hospital de Sant Pau, Barcelona, Spain
| | - L Colomo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,Department of Pathology, Hospital del Mar, Universitat Pompeu Fabra, Barcelona, Spain
| | - M Alcoceba
- CIBERONC, Madrid, Spain.,Unidad de Biología Molecular/Histocompatibilidad, Servicio de Hematología, Hospital Universitario de Salamanca, Salamanca, Spain
| | - A Valera
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - A Carrió
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | - D Costa
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | - N Lopez-Bigas
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Research Unit on Biomedical Informatics, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - R Schmitz
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - L M Staudt
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - I Salaverria
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | - A López-Guillermo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
| | - E Campo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,CIBERONC, Madrid, Spain
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66
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Juskevicius D, Dirnhofer S, Tzankov A. Genetic background and evolution of relapses in aggressive B-cell lymphomas. Haematologica 2017; 102:1139-1149. [PMID: 28554945 PMCID: PMC5566014 DOI: 10.3324/haematol.2016.151647] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 05/03/2017] [Indexed: 12/13/2022] Open
Abstract
Relapses of aggressive B-cell lymphomas pose a higher risk to affected patients because of potential treatment resistance and usually rapid tumor growth. Recent advances, such as targeting Bruton tyrosine kinase, have provided promising results in small numbers of cases, but treatment for the majority of patients remains challenging and outcomes are generally poor. A number of recent studies have utilized state-of-the-art genomic technologies in an attempt to better understand tumor genome evolution during relapse and to identify relapse-specific genetic alterations. It has been found that in some settings (e.g. diffuse large B-cell lymphomas in immunocompromised patients, secondary diffuse large B-cell lymphomas as Richter transformations) a significant part of the recurrences are clonally-unrelated de novo neoplasms, which might have distinct genomic and drug sensitivity profiles as well as different prognoses. Similar to earlier findings in indolent lymphomas, genetic tumor evolution of clonally-related relapsing aggressive B-cell lymphomas is predominantly characterized by two patterns: early divergence from a common progenitor and late divergence/linear evolution from a primary tumor. The clinical implications of these distinct patterns are not yet clear and will require additional investigation; however, it is plausible that these two patterns of recurrence are linked to different treatment-resistance mechanisms. Attempts to identify drivers of relapses result in a very heterogeneous list of affected genes and pathways as well as epigenetic mechanisms and suggest many ways of how recurrent tumors can adapt to treatment and expand their malignant properties.
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Affiliation(s)
- Darius Juskevicius
- Institute of Pathology & Medical Genetics, University of Basel and University Hospital Basel, Switzerland
| | - Stephan Dirnhofer
- Institute of Pathology & Medical Genetics, University of Basel and University Hospital Basel, Switzerland
| | - Alexandar Tzankov
- Institute of Pathology & Medical Genetics, University of Basel and University Hospital Basel, Switzerland
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