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The potential of proliferative and apoptotic parameters in clinical flow cytometry of myeloid malignancies. Blood Adv 2021; 5:2040-2052. [PMID: 33847740 DOI: 10.1182/bloodadvances.2020004094] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/22/2021] [Indexed: 11/20/2022] Open
Abstract
Standardization of the detection and quantification of leukocyte differentiation markers by the EuroFlow Consortium has led to a major step forward in the integration of flow cytometry into classification of leukemia and lymphoma. In our opinion, this now enables introduction of markers for more dynamic parameters, such as proliferative and (anti)apoptotic markers, which have proven their value in the field of histopathology in the diagnostic process of solid tumors and lymphoma. Although use of proliferative and (anti)apoptotic markers as objective parameters in the diagnostic process of myeloid malignancies was studied in the past decades, this did not result in the incorporation of these biomarkers into clinical diagnosis. This review addresses the potential of these markers for implementation in the current, state-of-the-art multiparameter analysis of myeloid malignancies. The reviewed studies clearly recognize the importance of proliferation and apoptotic mechanisms in the pathogenesis of bone marrow (BM) malignancies. The literature is, however, contradictory on the role of these processes in myelodysplastic syndrome (MDS), MDS/myeloproliferative neoplasms, and acute myeloid leukemia. Furthermore, several studies underline the need for the analysis of the proliferative and apoptotic rates in subsets of hematopoietic BM cell lineages and argue that these results can have diagnostic and prognostic value in patients with myeloid malignancies. Recent developments in multiparameter flow cytometry now allow quantification of proliferative and (anti)apoptotic indicators in myeloid cells during their different maturation stages of separate hematopoietic cell lineages. This will lead to a better understanding of the biology and pathogenesis of these malignancies.
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Zannoni J, Mauz N, Seyve L, Meunier M, Pernet-Gallay K, Brault J, Jouzier C, Laurin D, Pezet M, Pernollet M, Cahn JY, Cognasse F, Polack B, Park S. Tumor microenvironment and clonal monocytes from chronic myelomonocytic leukemia induce a procoagulant climate. Blood Adv 2019; 3:1868-1880. [PMID: 31221660 PMCID: PMC6595258 DOI: 10.1182/bloodadvances.2018026955] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 05/14/2019] [Indexed: 01/22/2023] Open
Abstract
Chronic myelomonocytic leukemia (CMML) is a myeloid hematological malignancy with overlapping features of myelodysplastic syndromes (MDSs) and myeloproliferative neoplasms (MPNs). The knowledge of the role of the tumor microenvironment (TME), particularly mesenchymal stromal cells (MSCs), in MDS pathogenesis is increasing. Generally, cancer is associated with a procoagulant state participating in tumor development. Monocytes release procoagulant, tissue factor (TF)-bearing microparticles. We hypothesized that MSCs and clonal monocytes release procoagulant extracellular vesicles (EVs) within the CMML TME, inducing a procoagulant state that could modify hematopoietic stem cell (HSC) homeostasis. We isolated and cultured MSCs and monocytes from CMML patients and MSCs from healthy donors (HDs). Their medium EVs and small EVs (sEVs) were collected after iterative ultracentrifugations and characterized by nanoparticle tracking analysis. Their impact on hemostasis was studied with a thrombin generation assay and fibrinography. CMML or HD HSCs were exposed to sEVs from either CMML or HD MSCs. CMML MSC sEVs increased HD HSC procoagulant activity, suggesting a transfer of TF from the CMML TME to HD HSCs. The presence of TF on sEVs was shown by electron microscopy and western blot. Moreover, CMML monocyte EVs conferred a procoagulant activity to HD MSCs, which was reversed by an anti-TF antibody, suggesting the presence of TF on the EVs. Our findings revealed a procoagulant "climate" within the CMML environment related to TF-bearing sEVs secreted by CMML MSCs and monocytes.
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Affiliation(s)
- Johanna Zannoni
- Institute for Advanced Biosciences, INSERM U1209 and Centre National de la Recherche Scientifique Unité Mixte de Recherche (UMR) 5309, Grenoble Alpes University, Grenoble, France
| | - Natacha Mauz
- Institute for Advanced Biosciences, INSERM U1209 and Centre National de la Recherche Scientifique Unité Mixte de Recherche (UMR) 5309, Grenoble Alpes University, Grenoble, France
- Department of Hematology, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Landry Seyve
- Techniques de l'Ingénierie Médicale et de la Complexité Informatique, Mathématiques et Applications-Thérapeutique Recombinante Expérimentale, UMR 5525 Centre National de la Recherche Scientifique, Grenoble Alpes University, Grenoble, France
- Laboratory of Hematology, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Mathieu Meunier
- Institute for Advanced Biosciences, INSERM U1209 and Centre National de la Recherche Scientifique Unité Mixte de Recherche (UMR) 5309, Grenoble Alpes University, Grenoble, France
- Department of Hematology, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Karin Pernet-Gallay
- Grenoble Institute for Neurosciences, INSERM U1216, Plateforme de Microscopie Electronique, Grenoble, France
| | - Julie Brault
- Techniques de l'Ingénierie Médicale et de la Complexité Informatique, Mathématiques et Applications-Thérapeutique Recombinante Expérimentale, UMR 5525 Centre National de la Recherche Scientifique, Grenoble Alpes University, Grenoble, France
- Centre de Diagnostic de la Granulomatose Septique Diagnosis and Research Center, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Claire Jouzier
- Institute for Advanced Biosciences, INSERM U1209 and Centre National de la Recherche Scientifique Unité Mixte de Recherche (UMR) 5309, Grenoble Alpes University, Grenoble, France
- Department of Hematology, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - David Laurin
- Institute for Advanced Biosciences, INSERM U1209 and Centre National de la Recherche Scientifique Unité Mixte de Recherche (UMR) 5309, Grenoble Alpes University, Grenoble, France
- Etablissement Français du Sang Rhône-Alpes-Auvergne, Grenoble, France
| | - Mylène Pezet
- Plateforme de Microscopie Photonique, Cytométrie en Flux, Institute for Advanced Biosciences, Grenoble, France
| | - Martine Pernollet
- Institut de Biologie et de Pathologie, Laboratoire d'Immunologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Jean-Yves Cahn
- Department of Hematology, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Fabrice Cognasse
- Etablissement Français du Sang Rhône-Alpes-Auvergne, Saint-Etienne, France; and
- GIMAP-EA3064, Lyon University, Saint-Etienne, France
| | - Benoît Polack
- Techniques de l'Ingénierie Médicale et de la Complexité Informatique, Mathématiques et Applications-Thérapeutique Recombinante Expérimentale, UMR 5525 Centre National de la Recherche Scientifique, Grenoble Alpes University, Grenoble, France
- Laboratory of Hematology, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Sophie Park
- Institute for Advanced Biosciences, INSERM U1209 and Centre National de la Recherche Scientifique Unité Mixte de Recherche (UMR) 5309, Grenoble Alpes University, Grenoble, France
- Department of Hematology, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
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Alteration in the Cytokine Secretion of Bone Marrow Stromal Cells from Patients with Chronic Myelomonocytic Leukemia Contribute to Impaired Hematopoietic Supportive Activity. Stem Cells Int 2018; 2018:5921392. [PMID: 30123289 PMCID: PMC6079359 DOI: 10.1155/2018/5921392] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 05/03/2018] [Accepted: 05/15/2018] [Indexed: 12/20/2022] Open
Abstract
Bone marrow stromal cells (BMSCs) represent an important cellular component of the bone marrow microenvironment, which play an important role in supporting and regulating the proliferation and differentiation of hematopoietic stem/progenitor cells (HSPCs). We have previously reported that the ability of BMSCs derived from CMML patients (CMML-BMSCs) in supporting the expansion of cord blood (CB) CD34+ cells was significantly reduced compared to BMSCs derived from healthy donors (HD-BMSCs). In addition, CMML-BMSCs led to a skewed differentiation of CB CD34+ cells favoring myeloid lineage compared with HD-BMSCs. To assess whether the altered cytokine secretion was one of the mechanisms to mediate the impaired hematopoietic supportive activity of CMML-BMSCs, a transwell coculture followed by cytokine array was performed. We showed that noncontacted coculture with CMML-BMSCs preferentially promoted the differentiation of CB CD34+ cells toward myeloid lineage. The expression levels of multiple cytokines (IL-6, IL-8, and GRO-β) were markedly reduced in CMML-BMSCs compared with HD-BMSCs. By supplementing IL-6, IL-8, or GRO-β, the hematopoietic supportive activity of CMML-BMSCs was partially restored. These results suggested that BMSCs may contribute to the pathogenesis of CMML by altering their cytokine secretion, which will shed light on the further investigation to develop novel therapeutic strategies for CMML patients.
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Karsten MM, Enders S, Knabl J, Kirn V, Düwell P, Rack B, Blohmer JU, Mayr D, Dian D. Biologic meshes and synthetic meshes in cancer patients: a double-edged sword: differences in production of IL-6 and IL-12 caused by acellular dermal matrices in human immune cells. Arch Gynecol Obstet 2018; 297:1265-1270. [PMID: 29417284 DOI: 10.1007/s00404-018-4710-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 02/01/2018] [Indexed: 01/31/2023]
Abstract
PURPOSE In 2005, Breuing et al. first described the use of acellular dermal matrices (ADMs) in breast cancer patients. ADMs are assumed to be safe to use in an oncologic setting, but data from controlled studies are still needed. Here, we investigate the effects of ADMs on the production of interleukin (IL)-6 and IL-12, key regulators of immune suppression and activation. METHODS Strattice (ST), CollaMend (CM), and Biodesign (BD) biologic meshes and TiLoop, a synthetic mesh (TL), were used in this study. We isolated myeloid dendritic cells (MDCs), untouched plasmacytoid dendritic cells (pDCs), naïve B cells, and CD8+ T cells and co-cultured these cells with either the biologic meshes or TL. As positive controls, we used CpG ODN 2216 or lipopolysaccharide (LPS). The cytokine concentrations of IL-12p70 and IL-6 were determined after 7 days using sandwich ELISA sets. RESULTS There were highly significant differences between the ADMs and TL in terms of their ability to stimulate immunologic responses. IL-6 expression was significantly increased in B cells (p = 0.0006131) and T cells (p = 0.00418) when comparing TL and ADMs. We also identified significant differences in IL-12 production by B cells (p = 0.0166) and T cells (p = 0.003636) when comparing TL and ADMs. CONCLUSIONS Despite the assumed lack of an immunological response to ADMs, in our experimental study, human immune cells reacted with significantly different cytokine profiles. These findings may have implications for the potential activation or suppression of effector cells in cancer patients and could explain some of the post clinical post surgical signs of ADMS like skin rush and seroma.
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Affiliation(s)
- Maria Margarete Karsten
- Klinik für Gynäkologie und Brustzentrum, Charité Universitätsmedizin Berlin, Campus Charité Mitte, Charitéplatz 1, 10117, Berlin, Germany.
| | - Sabine Enders
- Klinik für Frauenheilkunde, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Julia Knabl
- Klinik für Frauenheilkunde, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Verena Kirn
- Klinik und Poliklinik für Frauenheilkunde, Universität Köln, Cologne, Germany
| | - Peter Düwell
- Abteilung für klinische Pharmakologie, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Brigitte Rack
- Klinik für Frauenheilkunde, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Jens-Uwe Blohmer
- Klinik für Gynäkologie und Brustzentrum, Charité Universitätsmedizin Berlin, Campus Charité Mitte, Charitéplatz 1, 10117, Berlin, Germany
| | - Doris Mayr
- Abteilung für Pathologie, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Darius Dian
- Klinik für Frauenheilkunde, Ludwig-Maximilians-Universität München, Munich, Germany
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Benton CB, Nazha A, Pemmaraju N, Garcia-Manero G. Chronic myelomonocytic leukemia: Forefront of the field in 2015. Crit Rev Oncol Hematol 2015; 95:222-42. [PMID: 25869097 PMCID: PMC4859155 DOI: 10.1016/j.critrevonc.2015.03.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 01/27/2015] [Accepted: 03/05/2015] [Indexed: 12/22/2022] Open
Abstract
Chronic myelomonocytic leukemia (CMML) includes components of both myelodysplastic syndrome and myeloproliferative neoplasms and is associated with a characteristic peripheral monocytosis. CMML is caused by the proliferation of an abnormal hematopoietic stem cell clone and may be influenced by microenvironmental changes. The disease is rare and has undergone revisions in its classification. We review the recent classification strategies as well as diagnostic criteria, focusing on CMML's genetic alterations and unique pathophysiology. We also discuss the latest molecular characterization of the disease, including how molecular factors affect current prognostic models. Finally, we focus on available treatment strategies, with a special emphasis on experimental and forthcoming therapies.
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Affiliation(s)
- Christopher B Benton
- Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Aziz Nazha
- Leukemia Program, Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Naveen Pemmaraju
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Guillermo Garcia-Manero
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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6
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Matarraz S, Teodosio C, Fernandez C, Albors M, Jara-Acevedo M, López A, Gonzalez-Gonzalez M, Gutierrez ML, Flores-Montero J, Cerveró C, Pizarro-Perea M, Garrastazul MP, Caballero G, Gutierrez O, Mendez GD, González-Silva M, Laranjeira P, Orfao A. The proliferation index of specific bone marrow cell compartments from myelodysplastic syndromes is associated with the diagnostic and patient outcome. PLoS One 2012; 7:e44321. [PMID: 22952954 PMCID: PMC3432128 DOI: 10.1371/journal.pone.0044321] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 08/01/2012] [Indexed: 12/22/2022] Open
Abstract
Myelodysplastic syndromes (MDS) are clonal stem cell disorders which frequently show a hypercellular dysplastic bone marrow (BM) associated with inefficient hematopoiesis and peripheral cytopenias due to increased apoptosis and maturation blockades. Currently, little is known about the role of cell proliferation in compensating for the BM failure syndrome and in determining patient outcome. Here, we analyzed the proliferation index (PI) of different compartments of BM hematopoietic cells in 106 MDS patients compared to both normal/reactive BM (n = 94) and acute myeloid leukemia (AML; n = 30 cases) using multiparameter flow cytometry. Our results show abnormally increased overall BM proliferation profiles in MDS which significantly differ between early/low-risk and advanced/high-risk cases. Early/low-risk patients showed increased proliferation of non-lymphoid CD34(+) precursors, maturing neutrophils and nucleated red blood cells (NRBC), while the PI of these compartments of BM precursors progressively fell below normal values towards AML levels in advanced/high-risk MDS. Decreased proliferation of non-lymphoid CD34(+) and NRBC precursors was significantly associated with adverse disease features, shorter overall survival (OS) and transformation to AML, both in the whole series and when low- and high-risk MDS patients were separately considered, the PI of NRBC emerging as the most powerful independent predictor for OS and progression to AML. In conclusion, assessment of the PI of NRBC, and potentially also of other compartments of BM precursors (e.g.: myeloid CD34(+) HPC), could significantly contribute to a better management of MDS.
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Affiliation(s)
- Sergio Matarraz
- Centro de Investigación del Cáncer (Instituto de Biología Celular y Molecular del Cáncer, CSIC-USAL), IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
| | - Cristina Teodosio
- Centro de Investigación del Cáncer (Instituto de Biología Celular y Molecular del Cáncer, CSIC-USAL), IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
| | - Carlos Fernandez
- Centro de Investigación del Cáncer (Instituto de Biología Celular y Molecular del Cáncer, CSIC-USAL), IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
| | - Manuel Albors
- Servicio de Hematología, Hospital Juan Canalejo, La Coruña, Spain
| | - María Jara-Acevedo
- Centro de Investigación del Cáncer (Instituto de Biología Celular y Molecular del Cáncer, CSIC-USAL), IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
| | - Antonio López
- Centro de Investigación del Cáncer (Instituto de Biología Celular y Molecular del Cáncer, CSIC-USAL), IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
| | - María Gonzalez-Gonzalez
- Centro de Investigación del Cáncer (Instituto de Biología Celular y Molecular del Cáncer, CSIC-USAL), IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
| | - María Laura Gutierrez
- Centro de Investigación del Cáncer (Instituto de Biología Celular y Molecular del Cáncer, CSIC-USAL), IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
| | - Juan Flores-Montero
- Centro de Investigación del Cáncer (Instituto de Biología Celular y Molecular del Cáncer, CSIC-USAL), IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
| | - Carlos Cerveró
- Servicio de Hematología, Hospital Virgen de la Luz, Cuenca, Spain
| | | | | | | | - Oliver Gutierrez
- Servicio de Hematología, Hospital Rio Hortega, Valladolid, Spain
| | - Guy Daniel Mendez
- Servicio de Hematología, Hospital de Jerez de la Frontera, Cádiz, Spain
| | | | - Paula Laranjeira
- Centro de Investigación del Cáncer (Instituto de Biología Celular y Molecular del Cáncer, CSIC-USAL), IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
| | - Alberto Orfao
- Centro de Investigación del Cáncer (Instituto de Biología Celular y Molecular del Cáncer, CSIC-USAL), IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
- * E-mail:
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Tsirakis G, Pappa CA, Spanoudakis M, Chochlakis D, Alegakis A, Psarakis FE, Stratinaki M, Stathopoulos EN, Alexandrakis MG. Clinical significance of sCD105 in angiogenesis and disease activity in multiple myeloma. Eur J Intern Med 2012; 23:368-73. [PMID: 22560388 DOI: 10.1016/j.ejim.2012.01.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Revised: 12/03/2011] [Accepted: 01/31/2012] [Indexed: 11/30/2022]
Abstract
BACKGROUND Τhe importance of angiogenesis in malignancies' growth is well recognized. CD105 (Endoglin), a proliferation-associated glycoprotein, is a powerful marker of neovascularization. Elevated amounts of soluble CD105 (sCD105) have been identified in selected solid tumors. The aim of the study was to estimate circulating levels of sCD105 and soluble transforming growth factor-β(1) (sTGF-β(1)), in multiple myeloma (MM) patients, to determine their significance in tumor progression and to investigate the correlation between sCD105 and markers of disease activity. METHODS We studied 50 newly diagnosed MM patients. Twenty-five of them were also investigated in plateauphase. Twenty patients with monoclonal gammopathy of undetermined significance (MGUS) were enrolled in this study. As control group 28 healthy persons were studied. We determined sCD105, sTGF-β(1) and interleukin-6 (IL-6) in the serum, Ki-67 proliferation index (Ki-67 PI) expression and microvascular density(MVD) in bone marrow with immunohistochemistry. RESULTS The mean concentrations of sCD105 and IL-6 were higher in MM and MGUS patients compared to controls, whereas serum levels of sTGF-β(1) were lower in MM patients compared to MGUS patients and controls. sCD105 levels, were significantly different among disease stages, with higher values in advanced stages. It was found that sCD105 correlated with Ki-67 PI, MVD and IL-6. CONCLUSIONS CD105 seems to play an important role in angiogenesis and tumor progression. Circulating levels of sCD105 could detect patients with more advanced disease and might help in evaluating the response to treatment.
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Affiliation(s)
- G Tsirakis
- Department of Hematology, University Hospital of Heraklion, Heraklion, Crete, Greece
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8
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Deregulated gene expression pathways in myelodysplastic syndrome hematopoietic stem cells. Leukemia 2010; 24:756-64. [PMID: 20220779 DOI: 10.1038/leu.2010.31] [Citation(s) in RCA: 216] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To gain insight into the molecular pathogenesis of the myelodysplastic syndromes (MDS), we performed global gene expression profiling and pathway analysis on the hematopoietic stem cells (HSC) of 183 MDS patients as compared with the HSC of 17 healthy controls. The most significantly deregulated pathways in MDS include interferon signaling, thrombopoietin signaling and the Wnt pathways. Among the most significantly deregulated gene pathways in early MDS are immunodeficiency, apoptosis and chemokine signaling, whereas advanced MDS is characterized by deregulation of DNA damage response and checkpoint pathways. We have identified distinct gene expression profiles and deregulated gene pathways in patients with del(5q), trisomy 8 or -7/del(7q). Patients with trisomy 8 are characterized by deregulation of pathways involved in the immune response, patients with -7/del(7q) by pathways involved in cell survival, whereas patients with del(5q) show deregulation of integrin signaling and cell cycle regulation pathways. This is the first study to determine deregulated gene pathways and ontology groups in the HSC of a large group of MDS patients. The deregulated pathways identified are likely to be critical to the MDS HSC phenotype and give new insights into the molecular pathogenesis of this disorder, thereby providing new targets for therapeutic intervention.
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9
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Al-Rahawan MM, Alter BP, Bryant BJ, Elghetany MT. Bone marrow cell cycle markers in inherited bone marrow failure syndromes. Leuk Res 2008; 32:1793-9. [PMID: 18606449 DOI: 10.1016/j.leukres.2008.05.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2008] [Revised: 05/24/2008] [Accepted: 05/26/2008] [Indexed: 11/19/2022]
Abstract
Patients with inherited bone marrow failure syndromes (IBMFS) are at increased risk of acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS), possibly related to cell cycle dysregulation. In a cross-sectional analysis of bone marrow from 77 IBMFS, 71 sporadic conditions (AML, MDS, acquired aplastic anemia) and 22 normal controls we found overexpression of p53 in IBMFS, AML, and MDS; of Ki-67 in IBMFS and AML; and of survivin in IBMFS compared with all other groups. The patterns of expression of cell cycle markers in IBMFS are thus distinct. Longitudinal studies will determine the diagnostic and prognostic significance of these findings.
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Affiliation(s)
- Mohamad M Al-Rahawan
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
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10
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Oh ST, Gotlib J. Antiangiogenic therapy in myelodysplastic syndromes: Is there a role? Curr Hematol Malig Rep 2008; 3:10-8. [DOI: 10.1007/s11899-008-0003-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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11
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Cuadros M, Dave SS, Jaffe ES, Honrado E, Milne R, Alves J, Rodríguez J, Zajac M, Benitez J, Staudt LM, Martinez-Delgado B. Identification of a Proliferation Signature Related to Survival in Nodal Peripheral T-Cell Lymphomas. J Clin Oncol 2007; 25:3321-9. [PMID: 17577022 DOI: 10.1200/jco.2006.09.4474] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Purpose Nodal peripheral T-cell lymphomas (PTCLs) constitute a heterogeneous group of neoplasms, suggesting the existence of molecular differences contributing to their histologic and clinical variability. Initial expression profiling studies of T-cell lymphomas have been inconclusive in yielding clinically relevant insights. We applied DNA microarrays to gain insight into the molecular signatures associated with prognosis. Materials and Methods We analyzed the expression profiles of 35 nodal PTCLs (23 PTCLs unspecified and 12 angioimmunoblastic) using two different microarray platforms, the cDNA microarray developed at the Spanish National Cancer Centre and an oligonucleotide microarray. Results We identified five clusters of genes, the expression of which varied significantly among the samples. Genes in these clusters seemed to be functionally related to different cellular processes such as proliferation, inflammatory response, and T-cell or B-cell lineages. Regardless of the microarray platform used, overexpression of genes in the proliferation signature was associated significantly with shorter survival of patients. This proliferation signature included genes commonly associated with the cell cycle, such as CCNA, CCNB, TOP2A, and PCNA. Moreover the PTCL proliferation signature showed a statistically significant inverse correlation with clusters of the inflammatory response (P < .0001), as well as with the percentage of CD68+ cells. Conclusion Our findings indicate that proliferation could be an important factor in evaluating nodal PTCL outcome and may help to define a more aggressive phenotype.
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Affiliation(s)
- Marta Cuadros
- Human Genetics Group and Genotyping Unit, Human Cancer Genetics Program, Spanish National Cancer Centre, Madrid, Spain
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12
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Zhang W, Zhou F, Cao X, Cheng Y, He A, Liu J, Ma X, Chen G. Successful treatment of primary refractory anemia with a combination regimen of all-trans retinoic acid, calcitriol, and androgen. Leuk Res 2006; 30:935-42. [PMID: 16445979 DOI: 10.1016/j.leukres.2005.11.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2005] [Revised: 11/17/2005] [Accepted: 11/18/2005] [Indexed: 11/27/2022]
Abstract
We investigated the efficacy and safety of a combination regimen in 63 patients with primary refractory anemia (RA). The daily treatment protocol comprised all-trans retinoic acid (ATRA) (30 mg/m(2)), calcitriol (0.1 microg/m(2)), and androgen (stanozolol 3mg/m(2), or danazol 300 mg/m(2)) in three separate doses for eight consecutive weeks. Hematologic improvement was observed in 43 (68.3%) patients. The treatment administered was generally well tolerated, with no severe regimen-related toxicity. The overall survival rates at 3 and 5 years were 68.72% and 53.18%, respectively. These results indicate that this combination regimen is an effective and well-tolerated treatment for patients with RA.
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Affiliation(s)
- Wanggang Zhang
- Department of Clinical Hematology, Affiliated No. 2 Hospital, Xi'an Jiaotong University, 157 West Five Road, Xi'an 710004, PR China.
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