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Sivaraj KK, Majev PG, Dharmalingam B, Schröder S, Banjanin B, Stehling M, Zeuschner D, Nordheim A, Schneider RK, Adams RH. Endothelial LATS2 is a suppressor of bone marrow fibrosis. NATURE CARDIOVASCULAR RESEARCH 2024; 3:951-969. [PMID: 39155965 PMCID: PMC11324521 DOI: 10.1038/s44161-024-00508-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 06/13/2024] [Indexed: 08/20/2024]
Abstract
Myelofibrosis and osteosclerosis are fibrotic diseases disrupting bone marrow function that occur in various leukemias but also in response to non-malignant alterations in hematopoietic cells. Here we show that endothelial cell-specific inactivation of the Lats2 gene, encoding Hippo kinase large tumor suppressor kinase 2, or overexpression of the downstream effector YAP1 induce myofibroblast formation and lead to extensive fibrosis and osteosclerosis, which impair bone marrow function and cause extramedullary hematopoiesis in the spleen. Mechanistically, loss of LATS2 induces endothelial-to-mesenchymal transition, resulting in increased expression of extracellular matrix and secreted signaling molecules. Changes in endothelial cells involve increased expression of serum response factor target genes, and, strikingly, major aspects of the LATS2 mutant phenotype are rescued by inactivation of the Srf gene. These findings identify the endothelium as a driver of bone marrow fibrosis, which improves understanding of myelofibrotic and osteosclerotic diseases, for which drug therapies are currently lacking.
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Affiliation(s)
- Kishor K. Sivaraj
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Paul-Georg Majev
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | | | - Silke Schröder
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Bella Banjanin
- Department of Developmental Biology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Martin Stehling
- Flow Cytometry Unit, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Dagmar Zeuschner
- Electron Microscopy Unit, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Alfred Nordheim
- Department of Molecular Biology, Interfaculty Institute for Cell Biology, University of Tübingen, Tübingen, Germany
- Leibniz Institute on Aging – Fritz Lipmann Institute, Jena, Germany
| | - Rebekka K. Schneider
- Department of Developmental Biology, Erasmus University Medical Center, Rotterdam, The Netherlands
- Oncode Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
- Institute for Cell and Tumor Biology, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen University, Aachen, Germany
| | - Ralf H. Adams
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, Münster, Germany
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Palumbo GA, Duminuco A. Myelofibrosis: In Search for BETter Targeted Therapies. J Clin Oncol 2023; 41:5044-5048. [PMID: 37751563 DOI: 10.1200/jco.23.00833] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 07/22/2023] [Accepted: 07/31/2023] [Indexed: 09/28/2023] Open
Affiliation(s)
- Giuseppe A Palumbo
- Department of Scienze Mediche, Chirurgiche e Tecnologie Avanzate "G.F. Ingrassia," University of Catania, Catania, Italy
| | - Andrea Duminuco
- Postgraduate School of Hematology, University of Catania, Catania, Italy
- Department of Haematology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
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3
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Mascarenhas J, Migliaccio AR, Kosiorek H, Bhave R, Palmer J, Kuykendall A, Mesa R, Rampal RK, Gerds AT, Yacoub A, Pettit K, Talpaz M, Komrokji R, Kremyanskaya M, Gonzalez A, Fabris F, Johnson K, Dougherty M, McGovern E, Arango Ossa J, Domenico D, Farnoud N, Weinberg RS, Kong A, Najfeld V, Vannucchi AM, Arciprete F, Zingariello M, Falchi M, Salama ME, Mead-Harvey C, Dueck A, Varricchio L, Hoffman R. A Phase Ib Trial of AVID200, a TGFβ 1/3 Trap, in Patients with Myelofibrosis. Clin Cancer Res 2023; 29:3622-3632. [PMID: 37439808 PMCID: PMC10502472 DOI: 10.1158/1078-0432.ccr-23-0276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/09/2023] [Accepted: 07/11/2023] [Indexed: 07/14/2023]
Abstract
PURPOSE Myelofibrosis (MF) is a clonal myeloproliferative neoplasm characterized by systemic symptoms, cytopenias, organomegaly, and bone marrow fibrosis. JAK2 inhibitors afford symptom and spleen burden reduction but do not alter the disease course and frequently lead to thrombocytopenia. TGFβ, a pleiotropic cytokine elaborated by the MF clone, negatively regulates normal hematopoiesis, downregulates antitumor immunity, and promotes bone marrow fibrosis. Our group previously showed that AVID200, a potent and selective TGFβ 1/3 trap, reduced TGFβ1-induced proliferation of human mesenchymal stromal cells, phosphorylation of SMAD2, and collagen expression. Moreover, treatment of MF mononuclear cells with AVID200 led to increased numbers of progenitor cells (PC) with wild-type JAK2 rather than JAK2V617F. PATIENTS AND METHODS We conducted an investigator-initiated, multicenter, phase Ib trial of AVID200 monotherapy in 21 patients with advanced MF. RESULTS No dose-limiting toxicity was identified at the three dose levels tested, and grade 3/4 anemia and thrombocytopenia occurred in 28.6% and 19.0% of treated patients, respectively. After six cycles of therapy, two patients attained a clinical benefit by IWG-MRT criteria. Spleen and symptom benefits were observed across treatment cycles. Unlike other MF-directed therapies, increases in platelet counts were noted in 81% of treated patients with three patients achieving normalization. Treatment with AVID200 resulted in potent suppression of plasma TGFβ1 levels and pSMAD2 in MF cells. CONCLUSIONS AVID200 is a well-tolerated, rational, therapeutic agent for the treatment of patients with MF and should be evaluated further in patients with thrombocytopenic MF in combination with agents that target aberrant MF intracellular signaling pathways.
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Affiliation(s)
- John Mascarenhas
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | | | - Heidi Kosiorek
- Department of Quantitative Health Sciences, Mayo Clinic, Scottsdale, Arizona
| | - Rupali Bhave
- Comprehensive Cancer Center of Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina
| | | | - Andrew Kuykendall
- Department of Hematologic Malignancy, Moffitt Cancer Center, Tampa, Florida
| | - Ruben Mesa
- Comprehensive Cancer Center of Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina
| | - Raajit K. Rampal
- Leukemia Service, Department of Medicine, Center for Hematologic Malignancies, Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Aaron T. Gerds
- Cleveland Clinic Taussig Cancer Institute, Cleveland, Ohio
| | | | - Kristen Pettit
- University of Michigan, Comprehensive Cancer Center, Ann Arbor, Michigan
| | - Moshe Talpaz
- University of Michigan, Comprehensive Cancer Center, Ann Arbor, Michigan
| | - Rami Komrokji
- Department of Hematologic Malignancy, Moffitt Cancer Center, Tampa, Florida
| | - Marina Kremyanskaya
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Agapito Gonzalez
- The University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Frank Fabris
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Kathryn Johnson
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Mikaela Dougherty
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Erin McGovern
- Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Juan Arango Ossa
- Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Dylan Domenico
- Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Noushin Farnoud
- Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, New York
| | | | - Amy Kong
- Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Vesna Najfeld
- Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | | | - Francesca Arciprete
- Unit of Microscopic and Ultrastructural Anatomy, University Campus Bio-Medico, Rome, Italy
| | - Maria Zingariello
- Unit of Microscopic and Ultrastructural Anatomy, University Campus Bio-Medico, Rome, Italy
| | - Mario Falchi
- National HIV/AIDS Research Center, Istituto Superiore di Sanità, Viale Regina Elena Rome Italy
| | | | - Carolyn Mead-Harvey
- Department of Quantitative Health Sciences, Mayo Clinic, Scottsdale, Arizona
| | - Amylou Dueck
- Department of Quantitative Health Sciences, Mayo Clinic, Scottsdale, Arizona
| | - Lilian Varricchio
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Ronald Hoffman
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
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Willekens C, Laplane L, Dagher T, Benlabiod C, Papadopoulos N, Lacout C, Rameau P, Catelain C, Alfaro A, Edmond V, Signolle N, Marchand V, Droin N, Hoogenboezem R, Schneider RK, Penson A, Abdel-Wahab O, Giraudier S, Pasquier F, Marty C, Plo I, Villeval JL, Constantinescu SN, Porteu F, Vainchenker W, Solary E. SRSF2-P95H decreases JAK/STAT signaling in hematopoietic cells and delays myelofibrosis development in mice. Leukemia 2023:10.1038/s41375-023-01878-0. [PMID: 37100881 DOI: 10.1038/s41375-023-01878-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/10/2023] [Accepted: 03/15/2023] [Indexed: 04/28/2023]
Abstract
Heterozygous mutation targeting proline 95 in Serine/Arginine-rich Splicing Factor 2 (SRSF2) is associated with V617F mutation in Janus Activated Kinase 2 (JAK2) in some myeloproliferative neoplasms (MPNs), most commonly primary myelofibrosis. To explore the interaction of Srsf2P95H with Jak2V617F, we generated Cre-inducible knock-in mice expressing these mutants under control of the stem cell leukemia (Scl) gene promoter. In transplantation experiments, Srsf2P95H unexpectedly delayed myelofibrosis induced by Jak2V617F and decreased TGFβ1 serum level. Srsf2P95H reduced the competitiveness of transplanted Jak2V617F hematopoietic stem cells while preventing their exhaustion. RNA sequencing of sorted megakaryocytes identified an increased number of splicing events when the two mutations were combined. Focusing on JAK/STAT pathway, Jak2 exon 14 skipping was promoted by Srsf2P95H, an event detected in patients with JAK2V617F and SRSF2P95 co-mutation. The skipping event generates a truncated inactive JAK2 protein. Accordingly, Srsf2P95H delays myelofibrosis induced by the thrombopoietin receptor agonist Romiplostim in Jak2 wild-type animals. These results unveil JAK2 exon 14 skipping promotion as a strategy to reduce JAK/STAT signaling in pathological conditions.
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Affiliation(s)
- Christophe Willekens
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France
- Département d'hématologie, Gustave Roussy Cancer Campus, Villejuif, France
| | - Lucie Laplane
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Institut d'Histoire et Philosophie des Sciences et des Techniques, Université Paris I Panthéon-Sorbonne, Paris, France
| | - Tracy Dagher
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Camelia Benlabiod
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France
- Institut d'Histoire et Philosophie des Sciences et des Techniques, Université Paris I Panthéon-Sorbonne, Paris, France
| | - Nicolas Papadopoulos
- Ludwig Institute for Cancer Research Brussels, Brussels, Belgium
- Université catholique de Louvain and de Duve Institute, Brussels, Belgium
| | | | | | | | | | - Valérie Edmond
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
| | | | - Valentine Marchand
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Nathalie Droin
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France
- Gustave Roussy Cancer Campus, Villejuif, France
| | - Remco Hoogenboezem
- Department of Hematology, Erasmus University, Rotterdam, The Netherlands
| | - Rebekka K Schneider
- Department of Hematology, Erasmus University, Rotterdam, The Netherlands
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, RWTH Aachen University, Aachen, Germany
| | - Alex Penson
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Omar Abdel-Wahab
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | - Florence Pasquier
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Département d'hématologie, Gustave Roussy Cancer Campus, Villejuif, France
| | - Caroline Marty
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Isabelle Plo
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Jean-Luc Villeval
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Stefan N Constantinescu
- Ludwig Institute for Cancer Research Brussels, Brussels, Belgium
- Université catholique de Louvain and de Duve Institute, Brussels, Belgium
- WELBIO department, WEL Research Institute, Wavre, Belgium
- Ludwig Institute for Cancer Research, Nuffield Department of Medicine, Oxford University, Oxford, UK
| | - Françoise Porteu
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - William Vainchenker
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Eric Solary
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif, France.
- Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.
- Département d'hématologie, Gustave Roussy Cancer Campus, Villejuif, France.
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Thrombocytopenia in Patients With Myelofibrosis: A Practical Management Guide. CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2022; 22:e1067-e1074. [PMID: 36117043 DOI: 10.1016/j.clml.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 01/26/2023]
Abstract
Patients with myelofibrosis (MF) frequently develop thrombocytopenia as a consequence of bone marrow fibrosis, splenic sequestration, and myelosuppression from an inflammatory microenvironmental milieu. Thrombocytopenia occurs frequently at diagnosis, worsens with disease progression, is an independent adverse prognostic factor, and limits effective dosing of JAK2 inhibitors. Recently, pacritinib was approved for patients with MF and extreme thrombocytopenia. However, this JAK2/IRAK1 inhibitor is not primarily used to attain improvement in platelet count. In this narrative review, we discuss strategies to specifically address thrombocytopenia in MF patients including immunomodulatory drugs, synthetic androgens, hypomethylating agents and splenectomy, all of which have only modest efficacy in alleviating thrombocytopenia. We also detail transfusion approaches, including diagnostic and therapeutic consideration for platelet transfusion refractoriness. We end by discussing novel therapies, including TGFβ traps and recombinant pentraxin-2, which may increase platelet counts in MF patients. Despite recent therapeutic advancements in MF, there remains a near paucity of agents that can effectively alleviate thrombocytopenia.
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Varricchio L, Hoffman R. Megakaryocytes Are Regulators of the Tumor Microenvironment and Malignant Hematopoietic Progenitor Cells in Myelofibrosis. Front Oncol 2022; 12:906698. [PMID: 35646681 PMCID: PMC9130548 DOI: 10.3389/fonc.2022.906698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 04/15/2022] [Indexed: 12/15/2022] Open
Abstract
Megakaryocytes (MKs) are multifunctional hematopoietic cells that produce platelets, serve as components of bone marrow (BM) niches that support the development of hematopoietic stem and progenitor cell (HSPC) and provide inflammatory signals. MKs can dynamically change their activities during homeostasis and following stress, thereby regulating hematopoietic stem cell (HSC) function. Myelofibrosis (MF) is a progressive chronic myeloproliferative neoplasm (MPN) characterized by hyperactivation of JAK/STAT signaling and MK hyperplasia, which is associated with an aberrant inflammatory signature. Since JAK1/2 inhibitor alone is incapable of depleting the malignant HSC clones or reversing BM fibrosis, the identification of mechanisms that cooperate with MF JAK/STAT signaling to promote disease progression might help in developing combination therapies to modify disease outcomes. Chronic inflammation and MK hyperplasia result in an abnormal release of TGFβ1, which plays a critical role in the pathobiology of MF by contributing to the development of BM fibrosis. Dysregulated TGFβ signaling can also alter the hematopoietic microenvironment supporting the predominance of MF-HSCs and enhance the quiescence of the reservoir of wild-type HSCs. Upregulation of TGFβ1 levels is a relatively late event in MF, while during the early pre-fibrotic stage of MF the alarmin S100A8/S100A9 heterocomplex promotes pro-inflammatory responses and sustains the progression of MF-HSCs. In this review, we will discuss the recent advances in our understanding of the roles of abnormal megakaryopoiesis, and the altered microenvironment in MF progression and the development of novel combined targeted therapies to disrupt the aberrant interplay between MKs, the BM microenvironment and malignant HSCs which would potentially limit the expansion of MF-HSC clones.
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Affiliation(s)
- Lilian Varricchio
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Ronald Hoffman
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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7
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Zingariello M, Verachi P, Gobbo F, Martelli F, Falchi M, Mazzarini M, Valeri M, Sarli G, Marinaccio C, Melo-Cardenas J, Crispino JD, Migliaccio AR. Resident Self-Tissue of Proinflammatory Cytokines Rather than Their Systemic Levels Correlates with Development of Myelofibrosis in Gata1low Mice. Biomolecules 2022; 12:biom12020234. [PMID: 35204735 PMCID: PMC8961549 DOI: 10.3390/biom12020234] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 01/27/2022] [Accepted: 01/27/2022] [Indexed: 02/05/2023] Open
Abstract
Serum levels of inflammatory cytokines are currently investigated as prognosis markers in myelofibrosis, the most severe Philadelphia-negative myeloproliferative neoplasm. We tested this hypothesis in the Gata1low model of myelofibrosis. Gata1low mice, and age-matched wild-type littermates, were analyzed before and after disease onset. We assessed cytokine serum levels by Luminex-bead-assay and ELISA, frequency and cytokine content of stromal cells by flow cytometry, and immunohistochemistry and bone marrow (BM) localization of GFP-tagged hematopoietic stem cells (HSC) by confocal microscopy. Differences in serum levels of 32 inflammatory-cytokines between prefibrotic and fibrotic Gata1low mice and their wild-type littermates were modest. However, BM from fibrotic Gata1low mice contained higher levels of lipocalin-2, CXCL1, and TGF-β1 than wild-type BM. Although frequencies of endothelial cells, mesenchymal cells, osteoblasts, and megakaryocytes were higher than normal in Gata1low BM, the cells which expressed these cytokines the most were malignant megakaryocytes. This increased bioavailability of proinflammatory cytokines was associated with altered HSC localization: Gata1low HSC were localized in the femur diaphysis in areas surrounded by microvessels, neo-bones, and megakaryocytes, while wild-type HSC were localized in the femur epiphysis around adipocytes. In conclusion, bioavailability of inflammatory cytokines in BM, rather than blood levels, possibly by reshaping the HSC niche, correlates with myelofibrosis in Gata1low mice.
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Affiliation(s)
| | - Paola Verachi
- Department of Biomedical and Neuromotorial Sciences, Alma Mater University, 40126 Bologna, Italy; (P.V.); (F.G.); (M.M.)
| | - Francesca Gobbo
- Department of Biomedical and Neuromotorial Sciences, Alma Mater University, 40126 Bologna, Italy; (P.V.); (F.G.); (M.M.)
- Department of Veterinary Medical Sciences, University of Bologna, 40126 Bologna, Italy;
| | - Fabrizio Martelli
- National Center for Drug Research and Evaluation, Istituto Superiore di Sanità, 00161 Rome, Italy;
| | - Mario Falchi
- National Center HIV/AIDS Research, Istituto Superiore di Sanità, 00161 Rome, Italy;
| | - Maria Mazzarini
- Department of Biomedical and Neuromotorial Sciences, Alma Mater University, 40126 Bologna, Italy; (P.V.); (F.G.); (M.M.)
| | - Mauro Valeri
- Center for Animal Experimentation and Well-Being, Istituto Superiore di Sanità, 00161 Rome, Italy;
| | - Giuseppe Sarli
- Department of Veterinary Medical Sciences, University of Bologna, 40126 Bologna, Italy;
| | | | - Johanna Melo-Cardenas
- Department of Hematology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (J.M.-C.); (J.D.C.)
| | - John D. Crispino
- Department of Hematology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (J.M.-C.); (J.D.C.)
| | - Anna Rita Migliaccio
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
- Center for Integrated Biomedical Research, Campus Bio-Medico, 00128 Rome, Italy
- Correspondence:
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8
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Varricchio L, Iancu-Rubin C, Upadhyaya B, Zingariello M, Martelli F, Verachi P, Clementelli C, Denis JF, Rahman AH, Tremblay G, Mascarenhas J, Mesa RA, O'Connor-McCourt M, Migliaccio AR, Hoffman R. TGFβ1 protein trap AVID200 beneficially affects hematopoiesis and bone marrow fibrosis in myelofibrosis. JCI Insight 2021; 6:e145651. [PMID: 34383713 PMCID: PMC8492354 DOI: 10.1172/jci.insight.145651] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 08/11/2021] [Indexed: 11/17/2022] Open
Abstract
Myelofibrosis (MF) is a progressive chronic myeloproliferative neoplasm characterized by hyperactivation of JAK/STAT signaling and dysregulation of the transcription factor GATA1 in megakaryocytes (MKs). TGF-β plays a pivotal role in the pathobiology of MF by promoting BM fibrosis and collagen deposition and by enhancing the dormancy of normal hematopoietic stem cells (HSCs). In this study, we show that MF-MKs elaborated significantly greater levels of TGF-β1 than TGF-β2 and TGF-β3 to a varying degree, and we evaluated the ability of AVID200, a potent TGF-β1/TGF-β3 protein trap, to block the excessive TGF-β signaling. Treatment of human mesenchymal stromal cells with AVID200 significantly reduced their proliferation, decreased phosphorylation of SMAD2, and interfered with the ability of TGF-β1 to induce collagen expression. Moreover, treatment of MF mononuclear cells with AVID200 led to increased numbers of progenitor cells (PCs) with WT JAK2 rather than mutated JAK2V617F. This effect of AVID200 on MF PCs was attributed to its ability to block TGF-β1–induced p57Kip2 expression and SMAD2 activation, thereby allowing normal rather than MF PCs to preferentially proliferate and form hematopoietic colonies. To assess the in vivo effects of AVID200, Gata1lo mice, a murine model of MF, were treated with AVID200, resulting in the reduction in BM fibrosis and an increase in BM cellularity. AVID200 treatment also increased the frequency and numbers of murine progenitor cells as well as short-term and long-term HSCs. Collectively, these data provide the rationale for TGF-β1 blockade, with AVID200 as a therapeutic strategy for patients with MF.
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Affiliation(s)
- Lilian Varricchio
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, United States of America
| | - Camelia Iancu-Rubin
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, United States of America
| | - Bhaskar Upadhyaya
- Human Immune Monitoring Core, Icahn School of Medicine at Mount Sinai, New York, United States of America
| | | | - Fabrizio Martelli
- National Center for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Paola Verachi
- Biomedical and Neuromotorial Sciences, Alma Mater University, Bologna, Italy
| | - Cara Clementelli
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, United States of America
| | | | - Adeeb H Rahman
- Human Immune Monitoring Core, Icahn School of Medicine at Mount Sinai, New York, United States of America
| | | | - John Mascarenhas
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, United States of America
| | - Ruben A Mesa
- Hematology Oncology, Mays Cancer Center, San Antonio, United States of America
| | | | | | - Ronald Hoffman
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, United States of America
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9
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Giardullo L, Altomare A, Rotondo C, Corrado A, Cantatore FP. Osteoblast Dysfunction in Non-Hereditary Sclerosing Bone Diseases. Int J Mol Sci 2021; 22:ijms22157980. [PMID: 34360745 PMCID: PMC8348499 DOI: 10.3390/ijms22157980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 01/02/2023] Open
Abstract
A review of the available literature was performed in order to summarize the existing evidence between osteoblast dysfunction and clinical features in non-hereditary sclerosing bone diseases. It has been known that proliferation and migration of osteoblasts are concerted by soluble factors such as fibroblast growth factor (FGF), platelet-derived growth factor (PDGF), transforming growth factor (TGF), bone morphogenetic protein (BMP) but also by signal transduction cascades such as Wnt signaling pathway. Protein kinases play also a leading role in triggering the activation of osteoblasts in this group of diseases. Post-zygotic changes in mitogen-activated protein kinase (MAPK) have been shown to be associated with sporadic cases of Melorheostosis. Serum levels of FGF and PDGF have been shown to be increased in myelofibrosis, although studies focusing on Sphingosine-1-phosphate receptor was shown to be strongly expressed in Paget disease of the bone, which may partially explain the osteoblastic hyperactivity during this condition. Pathophysiological mechanisms of osteoblasts in osteoblastic metastases have been studied much more thoroughly than in rare sclerosing syndromes: striking cellular mechanisms such as osteomimicry or complex intercellular signaling alterations have been described. Further research is needed to describe pathological mechanisms by which rare sclerosing non hereditary diseases lead to osteoblast dysfunction.
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Fisher DAC, Fowles JS, Zhou A, Oh ST. Inflammatory Pathophysiology as a Contributor to Myeloproliferative Neoplasms. Front Immunol 2021; 12:683401. [PMID: 34140953 PMCID: PMC8204249 DOI: 10.3389/fimmu.2021.683401] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 05/12/2021] [Indexed: 12/12/2022] Open
Abstract
Myeloid neoplasms, including acute myeloid leukemia (AML), myeloproliferative neoplasms (MPNs), and myelodysplastic syndromes (MDS), feature clonal dominance and remodeling of the bone marrow niche in a manner that promotes malignant over non-malignant hematopoiesis. This take-over of hematopoiesis by the malignant clone is hypothesized to include hyperactivation of inflammatory signaling and overproduction of inflammatory cytokines. In the Ph-negative MPNs, inflammatory cytokines are considered to be responsible for a highly deleterious pathophysiologic process: the phenotypic transformation of polycythemia vera (PV) or essential thrombocythemia (ET) to secondary myelofibrosis (MF), and the equivalent emergence of primary myelofibrosis (PMF). Bone marrow fibrosis itself is thought to be mediated heavily by the cytokine TGF-β, and possibly other cytokines produced as a result of hyperactivated JAK2 kinase in the malignant clone. MF also features extramedullary hematopoiesis and progression to bone marrow failure, both of which may be mediated in part by responses to cytokines. In MF, elevated levels of individual cytokines in plasma are adverse prognostic indicators: elevated IL-8/CXCL8, in particular, predicts risk of transformation of MF to secondary AML (sAML). Tumor necrosis factor (TNF, also known as TNFα), may underlie malignant clonal dominance, based on results from mouse models. Human PV and ET, as well as MF, harbor overproduction of multiple cytokines, above what is observed in normal aging, which can lead to cellular signaling abnormalities separate from those directly mediated by hyperactivated JAK2 or MPL kinases. Evidence that NFκB pathway signaling is frequently hyperactivated in a pan-hematopoietic pattern in MPNs, including in cells outside the malignant clone, emphasizes that MPNs are pan-hematopoietic diseases, which remodel the bone marrow milieu to favor persistence of the malignancy. Clinical evidence that JAK2 inhibition by ruxolitinib in MF neither reliably reduces malignant clonal burden nor eliminates cytokine elevations, suggests targeting cytokine mediated signaling as a therapeutic strategy, which is being pursued in new clinical trials. Greater knowledge of inflammatory pathophysiology in MPNs can therefore contribute to the development of more effective therapy.
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Affiliation(s)
- Daniel Arthur Corpuz Fisher
- Divisions of Hematology & Oncology, School of Medicine, Washington University in St. Louis, Saint Louis, MO, United States
| | - Jared Scott Fowles
- Divisions of Hematology & Oncology, School of Medicine, Washington University in St. Louis, Saint Louis, MO, United States
| | - Amy Zhou
- Divisions of Hematology & Oncology, School of Medicine, Washington University in St. Louis, Saint Louis, MO, United States
| | - Stephen Tracy Oh
- Divisions of Hematology & Oncology, School of Medicine, Washington University in St. Louis, Saint Louis, MO, United States
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11
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Abstract
Megakaryocytes give rise to platelets, which have a wide variety of functions in coagulation, immune response, inflammation, and tissue repair. Dysregulation of megakaryocytes is a key feature of in the myeloproliferative neoplasms, especially myelofibrosis. Megakaryocytes are among the main drivers of myelofibrosis by promoting myeloproliferation and bone marrow fibrosis. In vivo targeting of megakaryocytes by genetic and pharmacologic approaches ameliorates the disease, underscoring the important role of megakaryocytes in myeloproliferative neoplasms. Here we review the current knowledge of the function of megakaryocytes in the JAK2, CALR, and MPL-mutant myeloproliferative neoplasms.
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Nasillo V, Riva G, Paolini A, Forghieri F, Roncati L, Lusenti B, Maccaferri M, Messerotti A, Pioli V, Gilioli A, Bettelli F, Giusti D, Barozzi P, Lagreca I, Maffei R, Marasca R, Potenza L, Comoli P, Manfredini R, Maiorana A, Tagliafico E, Luppi M, Trenti T. Inflammatory Microenvironment and Specific T Cells in Myeloproliferative Neoplasms: Immunopathogenesis and Novel Immunotherapies. Int J Mol Sci 2021; 22:ijms22041906. [PMID: 33672997 PMCID: PMC7918142 DOI: 10.3390/ijms22041906] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 02/07/2023] Open
Abstract
The Philadelphia-negative myeloproliferative neoplasms (MPNs) are malignancies of the hematopoietic stem cell (HSC) arising as a consequence of clonal proliferation driven by somatically acquired driver mutations in discrete genes (JAK2, CALR, MPL). In recent years, along with the advances in molecular characterization, the role of immune dysregulation has been achieving increasing relevance in the pathogenesis and evolution of MPNs. In particular, a growing number of studies have shown that MPNs are often associated with detrimental cytokine milieu, expansion of the monocyte/macrophage compartment and myeloid-derived suppressor cells, as well as altered functions of T cells, dendritic cells and NK cells. Moreover, akin to solid tumors and other hematological malignancies, MPNs are able to evade T cell immune surveillance by engaging the PD-1/PD-L1 axis, whose pharmacological blockade with checkpoint inhibitors can successfully restore effective antitumor responses. A further interesting cue is provided by the recent discovery of the high immunogenic potential of JAK2V617F and CALR exon 9 mutations, that could be harnessed as intriguing targets for innovative adoptive immunotherapies. This review focuses on the recent insights in the immunological dysfunctions contributing to the pathogenesis of MPNs and outlines the potential impact of related immunotherapeutic approaches.
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Affiliation(s)
- Vincenzo Nasillo
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124 Modena, Italy; (G.R.); (B.L.); (E.T.); (T.T.)
- Correspondence: ; Tel.: +39-059-422-2173
| | - Giovanni Riva
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124 Modena, Italy; (G.R.); (B.L.); (E.T.); (T.T.)
| | - Ambra Paolini
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Fabio Forghieri
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Luca Roncati
- Institute of Pathology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (L.R.); (A.M.)
| | - Beatrice Lusenti
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124 Modena, Italy; (G.R.); (B.L.); (E.T.); (T.T.)
| | - Monica Maccaferri
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Andrea Messerotti
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Valeria Pioli
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Andrea Gilioli
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Francesca Bettelli
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Davide Giusti
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Patrizia Barozzi
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Ivana Lagreca
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Rossana Maffei
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Roberto Marasca
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Leonardo Potenza
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Patrizia Comoli
- Pediatric Hematology/Oncology Unit and Cell Factory, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Policlinico San Matteo, 27100 Pavia, Italy;
| | - Rossella Manfredini
- Centre for Regenerative Medicine “S. Ferrari”, University of Modena and Reggio Emilia, 41125 Modena, Italy;
| | - Antonino Maiorana
- Institute of Pathology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (L.R.); (A.M.)
| | - Enrico Tagliafico
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124 Modena, Italy; (G.R.); (B.L.); (E.T.); (T.T.)
| | - Mario Luppi
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy; (A.P.); (F.F.); (M.M.); (A.M.); (V.P.); (A.G.); (F.B.); (D.G.); (P.B.); (I.L.); (R.M.); (R.M.); (L.P.); (M.L.)
| | - Tommaso Trenti
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124 Modena, Italy; (G.R.); (B.L.); (E.T.); (T.T.)
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13
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Nasillo V, Riva G, Paolini A, Forghieri F, Roncati L, Lusenti B, Maccaferri M, Messerotti A, Pioli V, Gilioli A, Bettelli F, Giusti D, Barozzi P, Lagreca I, Maffei R, Marasca R, Potenza L, Comoli P, Manfredini R, Maiorana A, Tagliafico E, Luppi M, Trenti T. Inflammatory Microenvironment and Specific T Cells in Myeloproliferative Neoplasms: Immunopathogenesis and Novel Immunotherapies. Int J Mol Sci 2021. [PMID: 33672997 DOI: 10.3390/ijms22041906.pmid:33672997;pmcid:pmc7918142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023] Open
Abstract
The Philadelphia-negative myeloproliferative neoplasms (MPNs) are malignancies of the hematopoietic stem cell (HSC) arising as a consequence of clonal proliferation driven by somatically acquired driver mutations in discrete genes (JAK2, CALR, MPL). In recent years, along with the advances in molecular characterization, the role of immune dysregulation has been achieving increasing relevance in the pathogenesis and evolution of MPNs. In particular, a growing number of studies have shown that MPNs are often associated with detrimental cytokine milieu, expansion of the monocyte/macrophage compartment and myeloid-derived suppressor cells, as well as altered functions of T cells, dendritic cells and NK cells. Moreover, akin to solid tumors and other hematological malignancies, MPNs are able to evade T cell immune surveillance by engaging the PD-1/PD-L1 axis, whose pharmacological blockade with checkpoint inhibitors can successfully restore effective antitumor responses. A further interesting cue is provided by the recent discovery of the high immunogenic potential of JAK2V617F and CALR exon 9 mutations, that could be harnessed as intriguing targets for innovative adoptive immunotherapies. This review focuses on the recent insights in the immunological dysfunctions contributing to the pathogenesis of MPNs and outlines the potential impact of related immunotherapeutic approaches.
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Affiliation(s)
- Vincenzo Nasillo
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124 Modena, Italy
| | - Giovanni Riva
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124 Modena, Italy
| | - Ambra Paolini
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Fabio Forghieri
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Luca Roncati
- Institute of Pathology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Beatrice Lusenti
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124 Modena, Italy
| | - Monica Maccaferri
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Andrea Messerotti
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Valeria Pioli
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Andrea Gilioli
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Francesca Bettelli
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Davide Giusti
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Patrizia Barozzi
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Ivana Lagreca
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Rossana Maffei
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Roberto Marasca
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Leonardo Potenza
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Patrizia Comoli
- Pediatric Hematology/Oncology Unit and Cell Factory, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Policlinico San Matteo, 27100 Pavia, Italy
| | - Rossella Manfredini
- Centre for Regenerative Medicine "S. Ferrari", University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Antonino Maiorana
- Institute of Pathology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Enrico Tagliafico
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124 Modena, Italy
| | - Mario Luppi
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, 41124 Modena, Italy
| | - Tommaso Trenti
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124 Modena, Italy
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Rodríguez A, Yang C, Furutani E, García de Teresa B, Velázquez M, Filiatrault J, Sambel LA, Phan T, Flores-Guzmán P, Sánchez S, Monsiváis Orozco A, Mayani H, Bolukbasi OV, Färkkilä A, Epperly M, Greenberger J, Shimamura A, Frías S, Grompe M, Parmar K, D'Andrea AD. Inhibition of TGFβ1 and TGFβ3 promotes hematopoiesis in Fanconi anemia. Exp Hematol 2021; 93:70-84.e4. [PMID: 33166613 PMCID: PMC8686188 DOI: 10.1016/j.exphem.2020.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/28/2020] [Accepted: 11/03/2020] [Indexed: 12/31/2022]
Abstract
Fanconi anemia (FA) is a chromosome instability syndrome with congenital abnormalities, cancer predisposition and bone marrow failure (BMF). Although hematopoietic stem and progenitor cell (HSPC) transplantation is the recommended therapy, new therapies are needed for FA patients without suitable donors. BMF in FA is caused, at least in part, by a hyperactive growth-suppressive transforming growth factor β (TGFβ) pathway, regulated by the TGFβ1, TGFβ2, and TGFβ3 ligands. Accordingly, the TGFβ pathway is an attractive therapeutic target for FA. While inhibition of TGFβ1 and TGFβ3 promotes blood cell expansion, inhibition of TGFβ2 is known to suppress hematopoiesis. Here, we report the effects of AVID200, a potent TGFβ1- and TGFβ3-specific inhibitor, on FA hematopoiesis. AVID200 promoted the survival of murine FA HSPCs in vitro. AVID200 also promoted in vitro the survival of human HSPCs from patients with FA, with the strongest effect in patients progressing to severe aplastic anemia or myelodysplastic syndrome (MDS). Previous studies have indicated that the toxic upregulation of the nonhomologous end-joining (NHEJ) pathway accounts, at least in part, for the poor growth of FA HSPCs. AVID200 downregulated the expression of NHEJ-related genes and reduced DNA damage in primary FA HSPC in vitro and in in vivo models. Collectively, AVID200 exhibits activity in FA mouse and human preclinical models. AVID200 may therefore provide a therapeutic approach to improving BMF in FA.
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Affiliation(s)
- Alfredo Rodríguez
- Department of Radiation Oncology and Center for DNA Damage and Repair, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA; Instituto Nacional de Pediatría, Mexico City, Mexico
| | - Chunyu Yang
- Department of Radiation Oncology and Center for DNA Damage and Repair, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Elissa Furutani
- Dana Farber and Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA
| | | | - Martha Velázquez
- Department of Radiation Oncology and Center for DNA Damage and Repair, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Jessica Filiatrault
- Department of Radiation Oncology and Center for DNA Damage and Repair, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Larissa A Sambel
- Department of Radiation Oncology and Center for DNA Damage and Repair, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Tin Phan
- Department of Radiation Oncology and Center for DNA Damage and Repair, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Patricia Flores-Guzmán
- Unidad de Investigación Médica en Enfermedades Oncológicas, Hospital de Oncología, Centro Médico Nacional, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | | | - Héctor Mayani
- Unidad de Investigación Médica en Enfermedades Oncológicas, Hospital de Oncología, Centro Médico Nacional, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Ozge V Bolukbasi
- Dana Farber and Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA
| | - Anniina Färkkilä
- Department of Radiation Oncology and Center for DNA Damage and Repair, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA; Research Program in Systems Oncology & Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Michael Epperly
- Department of Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Joel Greenberger
- Department of Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Akiko Shimamura
- Dana Farber and Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA
| | - Sara Frías
- Instituto Nacional de Pediatría, Mexico City, Mexico; Instituto de Investigaciones Biomédicas, Universidad Nacional Autonóma de México, Mexico City, Mexico
| | | | - Kalindi Parmar
- Department of Radiation Oncology and Center for DNA Damage and Repair, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Alan D D'Andrea
- Department of Radiation Oncology and Center for DNA Damage and Repair, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA.
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Sangiorgio VFI, Nam A, Chen Z, Orazi A, Tam W. GATA1 downregulation in prefibrotic and fibrotic stages of primary myelofibrosis and in the myelofibrotic progression of other myeloproliferative neoplasms. Leuk Res 2020; 100:106495. [PMID: 33360878 DOI: 10.1016/j.leukres.2020.106495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 11/30/2020] [Accepted: 12/09/2020] [Indexed: 12/28/2022]
Abstract
GATA binding protein 1 (GATA1) is a transcription factor essential for effective erythropoiesis and megakaryopoiesis. Two isoforms of GATA1 exist, derived from alternative splicing. "GATA1" is the full length and functionally active protein; "GATA1s" is the truncated isoform devoid of the activation domain, the function of which has not been fully elucidated. Reduced megakaryocytic expression of GATA1 has been linked to impaired hematopoiesis and bone marrow fibrosis in murine models and in vivo in patients affected by primary myelofibrosis (PMF). However, data is limited regarding GATA1 expression in other myeloproliferative neoplasms (MPN) such as pre-fibrotic PMF (pre-PMF), polycythemia vera (PV) and essential thrombocythemia (ET) and in their respective fibrotic progression. To assess whether an immunohistologic approach can be of help in separating different MPN, we have performed a comprehensive immunohistochemical evaluation of GATA1 expression in megakaryocytes within a cohort of BCR-ABL1 negative MPN. In order to highlight any potential differences between the two isoforms we tested two clones, one staining the sum of GATA1 and GATA1s ("clone 1"), the other staining GATA1 full length alone ("clone 2"). At the chronic phase, a significant reduction preferentially of GATA1 full length was seen in pre-fibrotic PMF, particularly compared to ET and PV; no significant differences were observed between PV and ET. The fibrotic progression of both PV and ET was associated with a significant reduction in GATA1, particularly affecting the GATA1 full length isoform. The fibrotic progression of pre-PMF to PMF was associated with a significant reduction of the overall GATA1 protein and a trend in reduction of GATA1s. Our findings support a role of GATA1 in the pathogenesis of BCR-ABL1 negative MPN, particularly in their fibrotic progression and suggest that the immunohistochemical evaluation of GATA1 may be of use in the differential diagnosis of these neoplasms.
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Affiliation(s)
- Valentina Fabiola Ilenia Sangiorgio
- Department of Cellular Pathology, the Royal London Hospital, London, UK; Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, NY, USA.
| | - Anna Nam
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, NY, USA.
| | - Zhengming Chen
- Department of Population Health Sciences, Weill Cornell Medicine, NY, USA.
| | - Attilio Orazi
- Department of Pathology, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA.
| | - Wayne Tam
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, NY, USA.
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16
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Zingariello M, Rosti V, Vannucchi AM, Guglielmelli P, Mazzarini M, Barosi G, Genova ML, Migliaccio AR. Shared and Distinctive Ultrastructural Abnormalities Expressed by Megakaryocytes in Bone Marrow and Spleen From Patients With Myelofibrosis. Front Oncol 2020; 10:584541. [PMID: 33312951 PMCID: PMC7701330 DOI: 10.3389/fonc.2020.584541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 10/19/2020] [Indexed: 12/21/2022] Open
Abstract
Numerous studies have documented ultrastructural abnormalities in malignant megakaryocytes from bone marrow (BM) of myelofibrosis patients but the morphology of these cells in spleen, an important extramedullary site in this disease, was not investigated as yet. By transmission-electron microscopy, we compared the ultrastructural features of megakaryocytes from BM and spleen of myelofibrosis patients and healthy controls. The number of megakaryocytes was markedly increased in both BM and spleen. However, while most of BM megakaryocytes are immature, those from spleen appear mature with well-developed demarcation membrane systems (DMS) and platelet territories and are surrounded by platelets. In BM megakaryocytes, paucity of DMS is associated with plasma (thick with protrusions) and nuclear (dilated with large pores) membrane abnormalities and presence of numerous glycosomes, suggesting a skewed metabolism toward insoluble polyglucosan accumulation. By contrast, the membranes of the megakaryocytes from the spleen were normal but these cells show mitochondria with reduced crests, suggesting deficient aerobic energy-metabolism. These distinctive morphological features suggest that malignant megakaryocytes from BM and spleen express distinctive metabolic impairments that may play different roles in the pathogenesis of myelofibrosis.
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Affiliation(s)
- Maria Zingariello
- Unit of Microscopic and Ultrastructural Anatomy, Department of Medicine, University Campus Bio-Medico, Rome, Italy
| | - Vittorio Rosti
- Center for the Study of Myelofibrosis, Laboratory of Biochemistry Biotechnology and Advanced Diagnosis, IRCCS Policlinico San Matteo, Pavia, Italy
| | - Alessandro M Vannucchi
- CRIMM; Center Research and Innovation of Myeloproliferative Neoplasms, AOUC, University of Florence, Florence, Italy
| | - Paola Guglielmelli
- CRIMM; Center Research and Innovation of Myeloproliferative Neoplasms, AOUC, University of Florence, Florence, Italy
| | - Maria Mazzarini
- Biomedical and Neuromotor Sciences, Alma Mater University Bologna, Bologna, Italy
| | - Giovanni Barosi
- Center for the Study of Myelofibrosis, Laboratory of Biochemistry Biotechnology and Advanced Diagnosis, IRCCS Policlinico San Matteo, Pavia, Italy
| | - Maria Luisa Genova
- Biomedical and Neuromotor Sciences, Alma Mater University Bologna, Bologna, Italy
| | - Anna Rita Migliaccio
- Biomedical and Neuromotor Sciences, Alma Mater University Bologna, Bologna, Italy.,Myeloproliferative Neoplasm-Research Consortium, New York, NY, United States
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17
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Mazzarini M, Falchi M, Bani D, Migliaccio AR. Evolution and new frontiers of histology in bio-medical research. Microsc Res Tech 2020; 84:217-237. [PMID: 32915487 DOI: 10.1002/jemt.23579] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/15/2020] [Accepted: 08/11/2020] [Indexed: 12/21/2022]
Abstract
Histology refers to the study of the morphology of cells within their natural tissue environment. As a bio-medical discipline, it dates back to the development of first microscopes which allowed to override the physical visual limitation of the human eye. Since the first observations, it was understood that cell shape predicts function and, therefore, shape alterations can identify and explain dysfunction and diseases. The advancements in morphological investigation techniques have allowed to extend our understanding of the shape-function relationships close to the molecular level of organization of tissues, as well as to derive reliable data not only from fixed, and hence static, biological samples but also living cells and tissues and even for extended time periods. These modern approaches, which encompass quantitative microscopy, precision microscopy, and dynamic microscopy, represent the new frontier of morphology. This article summarizes how the microscopy techniques have evolved to properly face the challenges of biomedical sciences, thus transforming histology from a merely qualitative discipline, which played an ancillary role to traditional "major" sciences such as anatomy, to a modern experimental science capable of driving knowledge progress in biology and medicine.
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Affiliation(s)
- Maria Mazzarini
- Biomedical and Neuromotor Sciences, Alma Mater University Bologna, Bologna, Italy
| | - Mario Falchi
- National AIDS Center, Istituto Superiore di Sanità, Rome, Italy
| | - Daniele Bani
- Research Unit of Histology & Embryology, Department of Experimental & Clinical Medicine, University of Florence, Florence, Italy
| | - Anna Rita Migliaccio
- Biomedical and Neuromotor Sciences, Alma Mater University Bologna, Bologna, Italy.,Myeloproliferative Neoplasm-Research Consortium, New York City, New York, USA
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18
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Curto-Garcia N, Harrison C, McLornan DP. Bone marrow niche dysregulation in myeloproliferative neoplasms. Haematologica 2020; 105:1189-1200. [PMID: 32241851 PMCID: PMC7193484 DOI: 10.3324/haematol.2019.243121] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 02/06/2020] [Indexed: 12/11/2022] Open
Abstract
The bone marrow niche is a complex and dynamic structure composed of a multitude of cell types which functionally create an interactive network facilitating hematopoietic stem cell development and maintenance. Its specific role in the pathogenesis, response to therapy, and transformation of myeloproliferative neoplasms has only recently been explored. Niche functionality is likely affected not only by the genomic background of the myeloproliferative neoplasm-associated mutated hematopoietic stem cells, but also by disease-associated 'chronic inflammation', and subsequent adaptive and innate immune responses. 'Cross-talk' between mutated hematopoietic stem cells and multiple niche components may contribute to propagating disease progression and mediating drug resistance. In this timely article, we will review current knowledge surrounding the deregulated bone marrow niche in myeloproliferative neoplasms and suggest how this may be targeted, either directly or indirectly, potentially influencing therapeutic choices both now and in the future.
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Affiliation(s)
| | - Claire Harrison
- Department of Hematology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Donal P McLornan
- Department of Hematology, Guy's and St Thomas' NHS Foundation Trust, London, UK
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19
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Bankar A, Gupta V. Investigational non-JAK inhibitors for chronic phase myelofibrosis. Expert Opin Investig Drugs 2020; 29:461-474. [PMID: 32245330 DOI: 10.1080/13543784.2020.1751121] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Patients with myelofibrosis (MF) have no effective treatment option after the failure of approved JAK inhibitor (JAKi) therapy. Non-JAK inhibitors (non-JAKi) that target non-canonical molecular pathways are undergoing clinical evaluations to optimize efficacy and/or to reduce hematological toxicity of JAKi. AREA COVERED This article reviews the efficacy data from completed and ongoing early phase clinical trials of non-JAKi agents for chronic phase MF. The article also illuminates some of the challenges of myelofibrosis drug development. EXPERT OPINION Most non-JAKi agents tested so far have shown modest benefit in improving the efficacy of ruxolitinib. Several novel agents such as BET inhibitor- CPI-0610, activin receptor ligand trap- luspatercept, recombinant pentraxin-PRM-151, telomerase inhibitor- imetelstat and bcl-2 inhibitor- navitoclax, have shown promising activity; however, they require vigorous evaluation in randomized controlled trials to understand the clinical benefit. Drugs that target new molecular pathways (MDM2, p-selectin, TIM-3, TGF-β, aurora kinase) and immune-based strategies (CALR vaccine, anti-PD-1, allogeneic cord blood regulatory T cells) are in early phase trials. Further translational studies to target leukemic stem cells, improvement in trial designs by incorporating control arm and survival endpoints, and patient-focused collaborations among all stakeholders could pave a way for future success in MF drug development.
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Affiliation(s)
- Aniket Bankar
- Medical Oncology and Hematology, Princess Margaret Cancer Center , Toronto, Ontario, Canada
| | - Vikas Gupta
- Medical Oncology and Hematology, Princess Margaret Cancer Center , Toronto, Ontario, Canada
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20
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Gangat N, Tefferi A. Myelofibrosis biology and contemporary management. Br J Haematol 2020; 191:152-170. [PMID: 32196650 DOI: 10.1111/bjh.16576] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 12/25/2022]
Abstract
Myelofibrosis is an enigmatic myeloproliferative neoplasm, despite noteworthy strides in understanding its genetic underpinnings. Driver mutations involving JAK2, CALR or MPL in 90% of patients mediate constitutive JAK-STAT signaling which, in concert with epigenetic alterations (ASXL1, DNMT3A, SRSF2, EZH2, IDH1/2 mutations), play a fundamental role in disease pathogenesis. Aberrant immature megakaryocytes are a quintessential feature, exhibiting reduced GATA1 protein expression and secreting a plethora of pro-inflammatory cytokines (IL-1 ß, TGF-ß), growth factors (b-FGF, PDGF, VEGF) in addition to extra cellular matrix components (fibronectin, laminin, collagens). The ensuing disrupted interactions amongst the megakaryocytes, osteoblasts, endothelium, stromal cells and myofibroblasts within the bone marrow culminate in the development of fibrosis and osteosclerosis. Presently, prognostic assessment tools for primary myelofibrosis (PMF) are centered on genetics, with incorporation of cytogenetic and molecular information into the mutation-enhanced (MIPSS 70-plus version 2.0) and genetically-inspired (GIPSS) prognostic scoring systems. Both models illustrate substantial clinical heterogeneity in PMF and serve as the crux for risk-adapted therapeutic decisions. A major challenge remains the dearth of disease-modifying drugs, whereas allogeneic transplant offers the chance of long-term remission for some patients. Our review serves to synopsise current appreciation of the pathogenesis of myelofibrosis together with emerging management strategies.
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21
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Early post-transplantation factors predict survival outcomes in patients undergoing allogeneic hematopoietic cell transplantation for myelofibrosis. Blood Cancer J 2020; 10:36. [PMID: 32157091 PMCID: PMC7064504 DOI: 10.1038/s41408-020-0302-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/17/2020] [Accepted: 01/24/2020] [Indexed: 01/18/2023] Open
Abstract
Factors predicting allogeneic hematopoietic cell transplantation (HCT) outcomes in myelofibrosis in the early post-HCT period have not been defined thus far. We attempt to study such factors that can help identify patients at a higher risk of relapse or death. This retrospective study included 79 patients who underwent first HCT for myelofibrosis at three centers between 2005 and 2016. Univariate analysis showed that red blood cell (RBC) transfusion dependence (HR 9.02, 95% CI 4.0–20.35), platelet transfusion dependence (HR 8.17, 95%CI 3.83–17.37), 100% donor chimerism in CD33 + cells (HR 0.21, 95%CI 0.07–0.62), unfavorable molecular status (HR 4.41, 95%CI 1.87–10.39), normal spleen size (HR 0.42, 95%CI 0.19–0.94), grade ≥ 2 bone marrow fibrosis (vs. grade ≤ 1; HR 2.7, 95%CI 1.1–6.93) and poor graft function (HR 2.6, 95%CI 1.22–5.53) at day +100 were statistically significantly associated with relapse-free survival (RFS). RBC transfusion dependence and unfavorable molecular status were also statistically significant in the multivariate analysis. Patients in whom both of these factors were present had a significantly worse RFS when compared to those with one or none. While limited by a small sample size, we demonstrate the significance of transfusion dependence and molecular status at day +100 in predicting outcomes.
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22
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Zingariello M, Martelli F, Verachi P, Bardelli C, Gobbo F, Mazzarini M, Migliaccio AR. Novel targets to cure primary myelofibrosis from studies on Gata1 low mice. IUBMB Life 2019; 72:131-141. [PMID: 31749302 DOI: 10.1002/iub.2198] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 10/24/2019] [Indexed: 01/06/2023]
Abstract
In 2002, we discovered that mice carrying the hypomorphic Gata1low mutation that reduces expression of the transcription factor GATA1 in megakaryocytes (Gata1low mice) develop myelofibrosis, a phenotype that recapitulates the features of primary myelofibrosis (PMF), the most severe of the Philadelphia-negative myeloproliferative neoplasms (MPNs). At that time, this discovery had a great impact on the field because mutations driving the development of PMF had yet to be discovered. Later studies identified that PMF, as the others MPNs, is associated with mutations activating the thrombopoietin/JAK2 axis raising great hope that JAK inhibitors may be effective to treat the disease. Unfortunately, ruxolitinib, the JAK1/2 inhibitor approved by FDA and EMEA for PMF, ameliorates symptoms but does not improve the natural course of the disease, and the cure of PMF is still an unmet clinical need. Although GATA1 is not mutated in PMF, reduced GATA1 content in megakaryocytes as a consequence of ribosomal deficiency is a hallmark of myelofibrosis (both in humans and mouse models) and, in fact, a driving event in the disease. Conversely, mice carrying the hypomorphic Gata1low mutation express an activated TPO/JAK2 pathway and partially respond to JAK inhibitors in a fashion similar to PMF patients (reduction of spleen size but limited improvement of the natural history of the disease). These observations cross-validated Gata1low mice as a bona fide animal model for PMF and prompted the use of this model to identify abnormalities that might be targeted to cure the disease. We will summarize here data generated in Gata1low mice indicating that the TGF-β/P-selectin axis is abnormal in PMF and represents a novel target for its treatment.
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Affiliation(s)
- Maria Zingariello
- Unit of Microscopic and Ultrastructural Anatomy, Department of Medicine, University Campus Bio-Medico, Rome, Italy
| | | | - Paola Verachi
- Department of Biological and Neurobiological Medicine, University of Bologna, Bologna, Italy
| | - Claudio Bardelli
- Department of Biological and Neurobiological Medicine, University of Bologna, Bologna, Italy
| | - Francesca Gobbo
- Department of Biological and Neurobiological Medicine, University of Bologna, Bologna, Italy
| | - Maria Mazzarini
- Department of Biological and Neurobiological Medicine, University of Bologna, Bologna, Italy
| | - Anna Rita Migliaccio
- Department of Biological and Neurobiological Medicine, University of Bologna, Bologna, Italy.,Myeloproliferative Neoplasms Research Consortium, New York, New York
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23
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Manshouri T, Verstovsek S, Harris DM, Veletic I, Zhang X, Post SM, Bueso-Ramos CE, Estrov Z. Primary myelofibrosis marrow-derived CD14+/CD34- monocytes induce myelofibrosis-like phenotype in immunodeficient mice and give rise to megakaryocytes. PLoS One 2019; 14:e0222912. [PMID: 31569199 PMCID: PMC6768666 DOI: 10.1371/journal.pone.0222912] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 09/10/2019] [Indexed: 01/08/2023] Open
Abstract
To confirm that neoplastic monocyte-derived collagen- and fibronectin-producing fibrocytes induce bone marrow (BM) fibrosis in primary myelofibrosis (PMF), we injected PMF BM-derived fibrocyte-precursor CD14+/CD34- monocytes into the tail vein of NOD-SCID-γ (NSG) mice. PMF BM-derived CD14+/CD34- monocytes engrafted and induced a PMF-like phenotype with splenomegaly, myeloid hyperplasia with clusters of atypical megakaryocytes, persistence of the JAK2V617F mutation, and BM and spleen fibrosis. As control we used normal human BM-derived CD14+/CD34- monocytes. These monocytes also engrafted and gave rise to normal megakaryocytes that, like PMF CD14+/CD34--derived megakaryocytes, expressed HLA-ABC and human CD42b antigens. Using 2 clonogenic assays we confirmed that PMF and normal BM-derived CD14+/CD34- monocytes give rise to megakaryocyte colony-forming cells, suggesting that a subpopulation BM monocytes harbors megakaryocyte progenitor capacity. Taken together, our data suggest that PMF monocytes induce myelofibrosis-like phenotype in immunodeficient mice and that PMF and normal BM-derived CD14+/CD34- monocytes give rise to megakaryocyte progenitor cells.
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Affiliation(s)
- Taghi Manshouri
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Srdan Verstovsek
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - David M. Harris
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Ivo Veletic
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Xiaorui Zhang
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Sean M. Post
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Carlos E. Bueso-Ramos
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Zeev Estrov
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
- * E-mail:
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24
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Eran Z, Zingariello M, Bochicchio MT, Bardelli C, Migliaccio AR. Novel strategies for the treatment of myelofibrosis driven by recent advances in understanding the role of the microenvironment in its etiology. F1000Res 2019; 8:F1000 Faculty Rev-1662. [PMID: 31583083 PMCID: PMC6758840 DOI: 10.12688/f1000research.18581.1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/12/2019] [Indexed: 12/12/2022] Open
Abstract
Myelofibrosis is the advanced stage of the Philadelphia chromosome-negative myeloproliferative neoplasms (MPNs), characterized by systemic inflammation, hematopoietic failure in the bone marrow, and development of extramedullary hematopoiesis, mainly in the spleen. The only potentially curative therapy for this disease is hematopoietic stem cell transplantation, an option that may be offered only to those patients with a compatible donor and with an age and functional status that may face its toxicity. By contrast, with the Philadelphia-positive MPNs that can be dramatically modified by inhibitors of the novel BCR-ABL fusion-protein generated by its genetic lesion, the identification of the molecular lesions that lead to the development of myelofibrosis has not yet translated into a treatment that can modify the natural history of the disease. Therefore, the cure of myelofibrosis remains an unmet clinical need. However, the excitement raised by the discovery of the genetic lesions has inspired additional studies aimed at elucidating the mechanisms driving these neoplasms towards their final stage. These studies have generated the feeling that the cure of myelofibrosis will require targeting both the malignant stem cell clone and its supportive microenvironment. We will summarize here some of the biochemical alterations recently identified in MPNs and the novel therapeutic approaches currently under investigation inspired by these discoveries.
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Affiliation(s)
- Zimran Eran
- Department of Hematology, Hadassah University Center, Jerusalem, Israel
| | - Maria Zingariello
- Unit of Microscopic and Ultrastructural Anatomy, Department of Medicine, University Campus Bio-Medico, Rome, Italy
| | - Maria Teresa Bochicchio
- Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (I.R.S.T.), IRCCS, Meldola (FC), Italy
| | - Claudio Bardelli
- Dipartimento di Scienze Biomediche e NeuroMotorie, Alma Mater Studiorum - Università di Bologna, Bologna, Italy
| | - Anna Rita Migliaccio
- Dipartimento di Scienze Biomediche e NeuroMotorie, Alma Mater Studiorum - Università di Bologna, Bologna, Italy
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25
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Kim H, Lee MK, Kim HR. Difference in megakaryocyte expression of GATA-1, IL-6, and IL-8 associated with maintenance of platelet counts in patients with plasma cell neoplasm with dysmegakaryopoiesis. Exp Hematol 2019; 73:13-17.e2. [DOI: 10.1016/j.exphem.2019.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/20/2019] [Accepted: 02/22/2019] [Indexed: 11/29/2022]
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26
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Bataller A, Montalban-Bravo G, Soltysiak KA, Garcia-Manero G. The role of TGFβ in hematopoiesis and myeloid disorders. Leukemia 2019; 33:1076-1089. [PMID: 30816330 DOI: 10.1038/s41375-019-0420-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/10/2019] [Accepted: 01/15/2019] [Indexed: 02/06/2023]
Abstract
The role of transforming growth factor-β (TGFβ) signaling in embryological development and tissue homeostasis has been thoroughly characterized. Its canonical downstream cascade is well known, even though its true complexity and other non-canonical pathways are still being explored. TGFβ signaling has been described as an important pathway involved in carcinogenesis and cancer progression. In the hematopoietic compartment, the TGFβ pathway is an important regulator of proliferation and differentiation of different cell types and has been implicated in the pathogenesis of a diverse variety of bone marrow disorders. Due to its importance in hematological diseases, novel inhibitors of this pathway are being developed against a number of hematopoietic disorders, including myelodysplastic syndromes (MDS). In this review, we provide an overview of the TGFβ pathway, focusing on its role in hematopoiesis and impact on myeloid disorders. We will discuss therapeutic interventions with promising results against MDS.
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Affiliation(s)
- Alex Bataller
- Hematology Department, IDIBAPS, Hospital Clínic de Barcelona, Barcelona, Spain
| | | | - Kelly A Soltysiak
- Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston, TX, USA
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27
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Malara A, Gruppi C, Abbonante V, Cattaneo D, De Marco L, Massa M, Iurlo A, Gianelli U, Balduini CL, Tira ME, Muro AF, Chauhan AK, Rosti V, Barosi G, Balduini A. EDA fibronectin-TLR4 axis sustains megakaryocyte expansion and inflammation in bone marrow fibrosis. J Exp Med 2019; 216:587-604. [PMID: 30733282 PMCID: PMC6400533 DOI: 10.1084/jem.20181074] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 11/26/2018] [Accepted: 01/09/2019] [Indexed: 12/24/2022] Open
Abstract
The fibronectin EDA isoform sustains bone marrow fibrosis, binding to TLR4 on megakaryocytes and inducing NF-κB activation and IL-6 release. In primary myelofibrosis patients, the bone marrow fibrosis correlates with increased levels of fibronectin EDA isoform in plasma. The fibronectin EDA isoform (EDA FN) is instrumental in fibrogenesis but, to date, its expression and function in bone marrow (BM) fibrosis have not been explored. We found that mice constitutively expressing the EDA domain (EIIIA+/+), but not EDA knockout mice, are more prone to develop BM fibrosis upon treatment with the thrombopoietin (TPO) mimetic romiplostim (TPOhigh). Mechanistically, EDA FN binds to TLR4 and sustains progenitor cell proliferation and megakaryopoiesis in a TPO-independent fashion, inducing LPS-like responses, such as NF-κB activation and release of profibrotic IL-6. Pharmacological inhibition of TLR4 or TLR4 deletion in TPOhigh mice abrogated Mk hyperplasia, BM fibrosis, IL-6 release, extramedullary hematopoiesis, and splenomegaly. Finally, developing a novel ELISA assay, we analyzed samples from patients affected by primary myelofibrosis (PMF), a well-known pathological situation caused by altered TPO signaling, and found that the EDA FN is increased in plasma and BM biopsies of PMF patients as compared with healthy controls, correlating with fibrotic phase.
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Affiliation(s)
- Alessandro Malara
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.,Laboratory of Biochemistry, Biotechnology and Advanced Diagnostics, Istituto di Ricovero e Cura a Carattere Scientific San Matteo Foundation, Pavia, Italy
| | - Cristian Gruppi
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Vittorio Abbonante
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.,Laboratory of Biochemistry, Biotechnology and Advanced Diagnostics, Istituto di Ricovero e Cura a Carattere Scientific San Matteo Foundation, Pavia, Italy
| | - Daniele Cattaneo
- Hematology Division, Istituto di Ricovero e Cura a Carattere Scientific Ca' Granda-Maggiore Policlinico Hospital Foundation, Milan, Italy
| | - Luigi De Marco
- Department of Translational Research, National Cancer Center (Istituto di Ricovero e Cura a Carattere Scientific Centro di Riferimento Oncologico), Aviano, Italy.,Department of Molecular and Experimental Research, The Scripps Research Institute, La Jolla, CA
| | - Margherita Massa
- Laboratory of Biochemistry, Biotechnology and Advanced Diagnostics, Istituto di Ricovero e Cura a Carattere Scientific San Matteo Foundation, Pavia, Italy
| | - Alessandra Iurlo
- Hematology Division, Istituto di Ricovero e Cura a Carattere Scientific Ca' Granda-Maggiore Policlinico Hospital Foundation, Milan, Italy
| | - Umberto Gianelli
- Division of Pathology, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Carlo L Balduini
- Department of Internal Medicine, Istituto di Ricovero e Cura a Carattere Scientific San Matteo Foundation, Pavia, Italy
| | - Maria E Tira
- Department of Biology and Biotechnology "Lazzaro Spallanzani," University of Pavia, Pavia, Italy
| | - Andrès F Muro
- The International Center for Genetic Engineering and Biotechnology, Trieste, Italy
| | - Anil K Chauhan
- Department of Internal Medicine, University of Iowa, Iowa City, IA
| | - Vittorio Rosti
- Center for the Study of Myelofibrosis, Laboratory of Biochemistry, Biotechnology and Advanced Diagnostics, Istituto di Ricovero e Cura a Carattere Scientific Policlinico S. Matteo Foundation, Pavia, Italy
| | - Giovanni Barosi
- Center for the Study of Myelofibrosis, Laboratory of Biochemistry, Biotechnology and Advanced Diagnostics, Istituto di Ricovero e Cura a Carattere Scientific Policlinico S. Matteo Foundation, Pavia, Italy
| | - Alessandra Balduini
- Department of Molecular Medicine, University of Pavia, Pavia, Italy .,Laboratory of Biochemistry, Biotechnology and Advanced Diagnostics, Istituto di Ricovero e Cura a Carattere Scientific San Matteo Foundation, Pavia, Italy.,Department of Biomedical Engineering, Tufts University, Medford, MA
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28
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Megakaryocyte Contribution to Bone Marrow Fibrosis: many Arrows in the Quiver. Mediterr J Hematol Infect Dis 2018; 10:e2018068. [PMID: 30416700 PMCID: PMC6223581 DOI: 10.4084/mjhid.2018.068] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 10/23/2018] [Indexed: 01/14/2023] Open
Abstract
In Primary Myelofibrosis (PMF), megakaryocyte dysplasia/hyperplasia determines the release of inflammatory cytokines that, in turn, stimulate stromal cells and induce bone marrow fibrosis. The pathogenic mechanism and the cells responsible for progression to bone marrow fibrosis in PMF are not completely understood. This review article aims to provide an overview of the crucial role of megakaryocytes in myelofibrosis by discussing the role and the altered secretion of megakaryocyte-derived soluble factors, enzymes and extracellular matrices that are known to induce bone marrow fibrosis.
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29
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Zimran E, Keyzner A, Iancu-Rubin C, Hoffman R, Kremyanskaya M. Novel treatments to tackle myelofibrosis. Expert Rev Hematol 2018; 11:889-902. [PMID: 30324817 DOI: 10.1080/17474086.2018.1536538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Despite the dramatic progress made in the treatment of patients with myelofibrosis since the introduction of the JAK1/2 inhibitor ruxolitinib, a therapeutic option that can modify the natural history of the disease and prevent evolution to blast-phase is still lacking. Recent investigational treatments including immunomodulatory drugs and histone deacetylase inhibitors benefit some patients but these effects have proven modest at best. Several novel agents do show promising activity in preclinical studies and early-phase clinical trials. We will illustrate a snapshot view of where the management of myelofibrosis is evolving, in an era of personalized medicine and advanced molecular diagnostics. Areas covered: A literature search using MEDLINE and recent meeting abstracts was performed using the keywords below. It focused on therapies in active phases of development based on their scientific and preclinical rationale with the intent to highlight agents that have novel biological effects. Expert commentary: The most mature advances in treatment of myelofibrosis are the development of second-generation JAK1/2 inhibitors and improvements in expanding access to donors for transplantation. In addition, there are efforts to identify drugs that target pathways other than JAK/STAT signaling that might improve the survival of myelofibrosis patients, and limit the need for stem-cell transplantation.
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Affiliation(s)
- Eran Zimran
- a Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai , Myeloproliferative Neoplasms Research Program , New York , NY , USA
| | - Alla Keyzner
- a Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai , Myeloproliferative Neoplasms Research Program , New York , NY , USA
| | - Camelia Iancu-Rubin
- a Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai , Myeloproliferative Neoplasms Research Program , New York , NY , USA
| | - Ronald Hoffman
- a Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai , Myeloproliferative Neoplasms Research Program , New York , NY , USA
| | - Marina Kremyanskaya
- a Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai , Myeloproliferative Neoplasms Research Program , New York , NY , USA
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Ling T, Crispino JD, Zingariello M, Martelli F, Migliaccio AR. GATA1 insufficiencies in primary myelofibrosis and other hematopoietic disorders: consequences for therapy. Expert Rev Hematol 2018; 11:169-184. [PMID: 29400094 PMCID: PMC6108178 DOI: 10.1080/17474086.2018.1436965] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION GATA1, the founding member of a family of transcription factors, plays important roles in the development of hematopoietic cells of several lineages. Although loss of GATA1 has been known to impair hematopoiesis in animal models for nearly 25 years, the link between GATA1 defects and human blood diseases has only recently been realized. Areas covered: Here the current understanding of the functions of GATA1 in normal hematopoiesis and how it is altered in disease is reviewed. GATA1 is indispensable mainly for erythroid and megakaryocyte differentiation. In erythroid cells, GATA1 regulates early stages of differentiation, and its deficiency results in apoptosis. In megakaryocytes, GATA1 controls terminal maturation and its deficiency induces proliferation. GATA1 alterations are often found in diseases involving these two lineages, such as congenital erythroid and/or megakaryocyte deficiencies, including Diamond Blackfan Anemia (DBA), and acquired neoplasms, such as acute megakaryocytic leukemia (AMKL) and the myeloproliferative neoplasms (MPNs). Expert commentary: Since the first discovery of GATA1 mutations in AMKL, the number of diseases that are associated with impaired GATA1 function has increased to include DBA and MPNs. With respect to the latter, we are only just now appreciating the link between enhanced JAK/STAT signaling, GATA1 deficiency and disease pathogenesis.
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Affiliation(s)
- Te Ling
- Division of Hematology/Oncology, Northwestern University, Chicago, IL, USA
| | - John D. Crispino
- Division of Hematology/Oncology, Northwestern University, Chicago, IL, USA
| | | | - Fabrizio Martelli
- National Center for Drug Research and Evaluation, Istituto Superiore di Sanità, Roma, Italy
| | - Anna Rita Migliaccio
- Department of Biomedical and Neuromotorial Sciences, Alma Mater University, Bologna, Italy
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai (ISMMS), New York, NY, USA
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Hmga2 collaborates with JAK2V617F in the development of myeloproliferative neoplasms. Blood Adv 2017; 1:1001-1015. [PMID: 29296743 DOI: 10.1182/bloodadvances.2017004457] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Accepted: 05/18/2017] [Indexed: 12/13/2022] Open
Abstract
High-mobility group AT-hook 2 (HMGA2) is crucial for the self-renewal of fetal hematopoietic stem cells (HSCs) but is downregulated in adult HSCs via repression by MIRlet-7 and the polycomb-recessive complex 2 (PRC2) including EZH2. The HMGA2 messenger RNA (mRNA) level is often elevated in patients with myelofibrosis that exhibits an advanced myeloproliferative neoplasm (MPN) subtype, and deletion of Ezh2 promotes the progression of severe myelofibrosis in JAK2V617F mice with upregulation of several oncogenes such as Hmga2. However, the direct role of HMGA2 in the pathogenesis of MPNs remains unknown. To clarify the impact of HMGA2 on MPNs carrying the driver mutation, we generated ΔHmga2/JAK2V617F mice overexpressing Hmga2 due to deletion of the 3' untranslated region. Compared with JAK2V617F mice, ΔHmga2/JAK2V617F mice exhibited more severe leukocytosis, anemia and splenomegaly, and shortened survival, whereas severity of myelofibrosis was comparable. ΔHmga2/JAK2V617F cells showed a greater repopulating ability that reproduced the severe MPN compared with JAK2V617F cells in serial bone marrow transplants, indicating that Hmga2 promotes MPN progression at the HSC level. Hmga2 also enhanced apoptosis of JAK2V617F erythroblasts that may worsen anemia. Relative to JAK2V617F hematopoietic stem and progenitor cells (HSPCs), over 30% of genes upregulated in ΔHmga2/JAK2V617F HSPCs overlapped with those derepressed by Ezh2 loss in JAK2V617F/Ezh2Δ/Δ HSPCs, suggesting that Hmga2 may facilitate upregulation of Ezh2 targets. Correspondingly, deletion of Hmga2 ameliorated anemia and splenomegaly in JAK2V617F/Ezh2Δ/wild-type mice, and MIRlet-7 suppression and PRC2 mutations correlated with the elevated HMGA2 mRNA levels in patients with MPNs, especially myelofibrosis. These findings suggest the crucial role of HMGA2 in MPN progression.
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Yue L, Bartenstein M, Zhao W, Ho WT, Han Y, Murdun C, Mailloux AW, Zhang L, Wang X, Budhathoki A, Pradhan K, Rapaport F, Wang H, Shao Z, Ren X, Steidl U, Levine RL, Zhao ZJ, Verma A, Epling-Burnette PK. Efficacy of ALK5 inhibition in myelofibrosis. JCI Insight 2017; 2:e90932. [PMID: 28405618 DOI: 10.1172/jci.insight.90932] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Myelofibrosis (MF) is a bone marrow disorder characterized by clonal myeloproliferation, aberrant cytokine production, extramedullary hematopoiesis, and bone marrow fibrosis. Although somatic mutations in JAK2, MPL, and CALR have been identified in the pathogenesis of these diseases, inhibitors of the Jak2 pathway have not demonstrated efficacy in ameliorating MF in patients. TGF-β family members are profibrotic cytokines and we observed significant TGF-β1 isoform overexpression in a large cohort of primary MF patient samples. Significant overexpression of TGF-β1 was also observed in murine clonal MPLW515L megakaryocytic cells. TGF-β1 stimulated the deposition of excessive collagen by mesenchymal stromal cells (MSCs) by activating the TGF-β receptor I kinase (ALK5)/Smad3 pathway. MSCs derived from MPLW515L mice demonstrated sustained overproduction of both collagen I and collagen III, effects that were abrogated by ALK5 inhibition in vitro and in vivo. Importantly, use of galunisertib, a clinically active ALK5 inhibitor, significantly improved MF in both MPLW515L and JAK2V617F mouse models. These data demonstrate the role of malignant hematopoietic stem cell (HSC)/TGF-β/MSC axis in the pathogenesis of MF, and provide a preclinical rationale for ALK5 blockade as a therapeutic strategy in MF.
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Affiliation(s)
- Lanzhu Yue
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA.,Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Matthias Bartenstein
- Department of Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York, USA
| | - Wanke Zhao
- Department of Pathology, Peggy and Stephenson Cancer Center, Oklahoma University Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Wanting Tina Ho
- Department of Pathology, Peggy and Stephenson Cancer Center, Oklahoma University Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Ying Han
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA.,Department of Biotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Immunology and Biotherapy, Key Laboratory of Cancer Prevention and Therapy, Tianjin, PR China
| | - Cem Murdun
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Adam W Mailloux
- Translational Science, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Ling Zhang
- Department of Hematopathology and Laboratory Medicine
| | - Xuefeng Wang
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida, USA
| | - Anjali Budhathoki
- Department of Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York, USA
| | - Kith Pradhan
- Department of Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York, USA
| | - Franck Rapaport
- Leukemia Center, Memorial Sloan Kettering Cancer Center, New York City, New York, USA
| | - Huaquan Wang
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Zonghong Shao
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Xiubao Ren
- Department of Biotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Immunology and Biotherapy, Key Laboratory of Cancer Prevention and Therapy, Tianjin, PR China
| | - Ulrich Steidl
- Department of Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York, USA
| | - Ross L Levine
- Leukemia Center, Memorial Sloan Kettering Cancer Center, New York City, New York, USA
| | - Zhizhuang Joe Zhao
- Department of Pathology, Peggy and Stephenson Cancer Center, Oklahoma University Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Amit Verma
- Department of Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York, USA
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Nakayama S, Yokote T, Hiraoka N, Akioka T, Nishiwaki U, Miyoshi T, Iwaki K, Fumimoto A, Masuda Y, Hatooka J, Fujimoto M, Nishimura Y, Tsuji M. Transforming growth factor β – and interleukin 13–producing mast cells are associated with fibrosis in bone marrow. Hum Pathol 2017; 62:180-186. [DOI: 10.1016/j.humpath.2017.01.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 01/03/2017] [Accepted: 01/09/2017] [Indexed: 01/30/2023]
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34
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Gilles L, Arslan AD, Marinaccio C, Wen QJ, Arya P, McNulty M, Yang Q, Zhao JC, Konstantinoff K, Lasho T, Pardanani A, Stein B, Plo I, Sundaravel S, Wickrema A, Migliaccio A, Gurbuxani S, Vainchenker W, Platanias LC, Tefferi A, Crispino JD. Downregulation of GATA1 drives impaired hematopoiesis in primary myelofibrosis. J Clin Invest 2017; 127:1316-1320. [PMID: 28240607 DOI: 10.1172/jci82905] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 12/30/2016] [Indexed: 12/11/2022] Open
Abstract
Primary myelofibrosis (PMF) is a clonal hematologic malignancy characterized by BM fibrosis, extramedullary hematopoiesis, circulating CD34+ cells, splenomegaly, and a propensity to evolve to acute myeloid leukemia. Moreover, the spleen and BM of patients harbor atypical, clustered megakaryocytes, which contribute to the disease by secreting profibrotic cytokines. Here, we have revealed that megakaryocytes in PMF show impaired maturation that is associated with reduced GATA1 protein. In investigating the cause of GATA1 downregulation, our gene-expression study revealed the presence of the RPS14-deficient gene signature, which is associated with defective ribosomal protein function and linked to the erythroid lineage in 5q deletion myelodysplastic syndrome. Surprisingly, reduced GATA1 expression and impaired differentiation were limited to megakaryocytes, consistent with a proproliferative effect of a GATA1 deficiency on this lineage. Importantly, expression of GATA1 effectively rescued maturation of PMF megakaryocytes. Together, these results suggest that ribosomal deficiency contributes to impaired megakaryopoiesis in myeloproliferative neoplasms.
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35
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Leiva O, Ng SK, Chitalia S, Balduini A, Matsuura S, Ravid K. The role of the extracellular matrix in primary myelofibrosis. Blood Cancer J 2017; 7:e525. [PMID: 28157219 PMCID: PMC5386340 DOI: 10.1038/bcj.2017.6] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 12/20/2016] [Indexed: 02/06/2023] Open
Abstract
Primary myelofibrosis (PMF) is a myeloproliferative neoplasm that arises from clonal proliferation of hematopoietic stem cells and leads to progressive bone marrow (BM) fibrosis. While cellular mutations involved in the development of PMF have been heavily investigated, noteworthy is the important role the extracellular matrix (ECM) plays in the progression of BM fibrosis. This review surveys ECM proteins contributors of PMF, and highlights how better understanding of the control of the ECM within the BM niche may lead to combined therapeutic options in PMF.
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Affiliation(s)
- O Leiva
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - S K Ng
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - S Chitalia
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - A Balduini
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.,Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - S Matsuura
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - K Ravid
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
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36
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Ceglia I, Dueck AC, Masiello F, Martelli F, He W, Federici G, Petricoin EF, Zeuner A, Iancu-Rubin C, Weinberg R, Hoffman R, Mascarenhas J, Migliaccio AR. Preclinical rationale for TGF-β inhibition as a therapeutic target for the treatment of myelofibrosis. Exp Hematol 2016; 44:1138-1155.e4. [PMID: 27592389 PMCID: PMC5778911 DOI: 10.1016/j.exphem.2016.08.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 08/16/2016] [Accepted: 08/19/2016] [Indexed: 01/20/2023]
Abstract
To assess the role of abnormal transforming growth factor-beta (TGF-β) signaling in the pathogenesis of primary myelofibrosis (PMF), the effects of the TGF-β receptor-1 kinase inhibitor SB431542 on ex vivo expansion of hematopoietic cells in cultures from patients with JAK2V617+-polycythemia vera (PV) or PMF (JAK2V617F+, CALRpQ365f+, or unknown) and from normal sources (adult blood, AB, or cord blood, CB) were compared. In cultures of normal sources, SB431542 significantly increased by 2.5-fold the number of progenitor cells generated by days 1-2 (CD34+) and 6 (colony-forming cells) (CB) and that of precursor cells, mostly immature erythroblasts, by days 14-17 (AB and CB). In cultures of JAK2V617F+-PV, SB431542 increased by twofold the numbers of progenitor cells by day 10 and had no effect on that of precursors cells by days 12-17 (∼fourfold increase in all cases). In contrast, SB431542 had no effect on the number of either progenitor or precursor cells in cultures of JAK2V617F+ and CALR pQ365fs+ PMF. These ontogenetic- and disease-specific effects were associated with variegation in the ability of SB431542 to induce CD34+ cells from AB (increased), CB (decreased), or PV and PMF (unaffected) into cycle and erythroblasts in proliferation (increased for AB and PV and unaffected for CB and PMF). Differences in expansion of erythroblasts from AB, CB, and PV were associated with differences in activation of TGF-β signaling (SHCY317, SMAD2S245/250/255, and SMAD1S/S/SMAD5S/S/SMAD8S/S) detectable in these cells by phosphoproteomic profiling. In conclusion, treatment with TGF-β receptor-1 kinase inhibitors may reactivate normal hematopoiesis in PMF patients, providing a proliferative advantage over the unresponsive malignant clone.
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Affiliation(s)
- Ilaria Ceglia
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Francesca Masiello
- Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Fabrizio Martelli
- Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Wu He
- Flow Cytometry Shared Resource Facility, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Giulia Federici
- Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy; Regina Elena National Cancer Institute, Rome, Italy
| | - Emanuel F Petricoin
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
| | - Ann Zeuner
- Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Camelia Iancu-Rubin
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Ronald Hoffman
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - John Mascarenhas
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Anna Rita Migliaccio
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Biomedical and Neuromotorial Sciences, Alma Mater University, Bologna, Italy.
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Meinders M, Hoogenboezem M, Scheenstra MR, De Cuyper IM, Papadopoulos P, Németh T, Mócsai A, van den Berg TK, Kuijpers TW, Gutiérrez L. Repercussion of Megakaryocyte-Specific Gata1 Loss on Megakaryopoiesis and the Hematopoietic Precursor Compartment. PLoS One 2016; 11:e0154342. [PMID: 27152938 PMCID: PMC4859556 DOI: 10.1371/journal.pone.0154342] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Accepted: 04/11/2016] [Indexed: 12/22/2022] Open
Abstract
During hematopoiesis, transcriptional programs are essential for the commitment and differentiation of progenitors into the different blood lineages. GATA1 is a transcription factor expressed in several hematopoietic lineages and essential for proper erythropoiesis and megakaryopoiesis. Megakaryocyte-specific genes, such as GP1BA, are known to be directly regulated by GATA1. Mutations in GATA1 can lead to dyserythropoietic anemia and pseudo gray-platelet syndrome. Selective loss of Gata1 expression in adult mice results in macrothrombocytopenia with platelet dysfunction, characterized by an excess of immature megakaryocytes. To specifically analyze the impact of Gata1 loss in mature committed megakaryocytes, we generated Gata1-Lox|Pf4-Cre mice (Gata1cKOMK). Consistent with previous findings, Gata1cKOMK mice are macrothrombocytopenic with platelet dysfunction. Supporting this notion we demonstrate that Gata1 regulates directly the transcription of Syk, a tyrosine kinase that functions downstream of Clec2 and GPVI receptors in megakaryocytes and platelets. Furthermore, we show that Gata1cKOMK mice display an additional aberrant megakaryocyte differentiation stage. Interestingly, these mice present a misbalance of the multipotent progenitor compartment and the erythroid lineage, which translates into compensatory stress erythropoiesis and splenomegaly. Despite the severe thrombocytopenia, Gata1cKOMK mice display a mild reduction of TPO plasma levels, and Gata1cKOMK megakaryocytes show a mild increase in Pf4 mRNA levels; such a misbalance might be behind the general hematopoietic defects observed, affecting locally normal TPO and Pf4 levels at hematopoietic stem cell niches.
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Affiliation(s)
- Marjolein Meinders
- Dept. of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
| | - Mark Hoogenboezem
- Dept. of Molecular Cell Biology, Sanquin Research and Landsteiner Laboratory, AMC, UvA, Amsterdam, the Netherlands
| | - Maaike R. Scheenstra
- Dept. of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
| | - Iris M. De Cuyper
- Dept. of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
| | - Petros Papadopoulos
- Dept. of Hematology, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Madrid, Spain
| | - Tamás Németh
- Dept. of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
- MTA-SE “Lendület” Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Attila Mócsai
- Dept. of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
- MTA-SE “Lendület” Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Timo K. van den Berg
- Dept. of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
| | - Taco W. Kuijpers
- Dept. of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
- Emma Children’s Hospital, Academic Medical Centre (AMC), UvA, Amsterdam, the Netherlands
| | - Laura Gutiérrez
- Dept. of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA), Amsterdam, the Netherlands
- Dept. of Hematology, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Madrid, Spain
- * E-mail:
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38
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Whetton AD, Azmi NC, Pearson S, Jaworska E, Zhang L, Blance R, Kendall AC, Nicolaou A, Taylor S, Williamson AJ, Pierce A. MPL W515L expression induces TGFβ secretion and leads to an increase in chemokinesis via phosphorylation of THOC5. Oncotarget 2016; 7:10739-55. [PMID: 26919114 PMCID: PMC4905435 DOI: 10.18632/oncotarget.7639] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 02/15/2016] [Indexed: 02/03/2023] Open
Abstract
The thrombopoietin receptor (MPL) has been shown to be mutated (MPL W515L) in myelofibrosis and thrombocytosis yet new approaches to treat this disorder are still required. We have previously shown that transcriptome and proteomic effects do not correlate well in oncogene-mediated leukemogenesis. We therefore investigated the effects of MPL W515L using proteomics. The consequences of MPL W515L expression on over 3300 nuclear and 3500 cytoplasmic proteins were assessed using relative quantification mass spectrometry. We demonstrate that MPL W515L expression markedly modulates the CXCL12/CXCR4/CD45 pathway associated with stem and progenitor cell chemotactic movement. We also demonstrated that MPL W515L expressing cells displayed increased chemokinesis which required the MPL W515L-mediated dysregulation of MYC expression via phosphorylation of the RNA transport protein THOC5 on tyrosine 225. In addition MPL W515L expression induced TGFβ secretion which is linked to sphingosine 1-phosphate production and the increased chemokinesis. These studies identify several pathways which offer potential targets for therapeutic intervention in the treatment of MPL W515L-driven malignancy. We validate our approach by showing that CD34+ cells from MPL W515L positive patients display increased chemokinesis and that treatment with a combination of MYC and sphingosine kinase inhibitors leads to the preferential killing of MPL W515L expressing cells.
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Affiliation(s)
- Anthony D. Whetton
- Stem Cell and Leukaemia Proteomics Laboratory, The University of Manchester, Manchester, UK
| | - Norhaida Che Azmi
- Stem Cell and Leukaemia Proteomics Laboratory, The University of Manchester, Manchester, UK
| | - Stella Pearson
- Stem Cell and Leukaemia Proteomics Laboratory, The University of Manchester, Manchester, UK
| | - Ewa Jaworska
- Stem Cell and Leukaemia Proteomics Laboratory, The University of Manchester, Manchester, UK
| | - Liqun Zhang
- Stem Cell and Leukaemia Proteomics Laboratory, The University of Manchester, Manchester, UK
| | - Rognvald Blance
- Stem Cell and Leukaemia Proteomics Laboratory, The University of Manchester, Manchester, UK
| | - Alexandra C. Kendall
- Manchester Pharmacy School, Faculty of Medical and Human Sciences, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Anna Nicolaou
- Manchester Pharmacy School, Faculty of Medical and Human Sciences, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Samuel Taylor
- Stem Cell and Leukaemia Proteomics Laboratory, The University of Manchester, Manchester, UK
| | - Andrew J.K. Williamson
- Stem Cell and Leukaemia Proteomics Laboratory, The University of Manchester, Manchester, UK
| | - Andrew Pierce
- Stem Cell and Leukaemia Proteomics Laboratory, The University of Manchester, Manchester, UK
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Agarwal A, Morrone K, Bartenstein M, Zhao ZJ, Verma A, Goel S. Bone marrow fibrosis in primary myelofibrosis: pathogenic mechanisms and the role of TGF-β. Stem Cell Investig 2016; 3:5. [PMID: 27358897 DOI: 10.3978/j.issn.2306-9759.2016.02.03] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 02/15/2016] [Indexed: 12/21/2022]
Abstract
Primary myelofibrosis (PMF) is a Philadelphia chromosome negative myeloproliferative neoplasm (MPN) with adverse prognosis and is associated with bone marrow fibrosis and extramedullary hematopoiesis. Even though the discovery of the Janus kinase 2 (JAK2), thrombopoietin receptor (MPL) and calreticulin (CALR) mutations have brought new insights into the complex pathogenesis of MPNs, the etiology of fibrosis is not well understood. Furthermore, since JAK2 inhibitors do not lead to reversal of fibrosis further understanding of the biology of fibrotic process is needed for future therapeutic discovery. Transforming growth factor beta (TGF-β) is implicated as an important cytokine in pathogenesis of bone marrow fibrosis. Various mouse models have been developed and have established the role of TGF-β in the pathogenesis of fibrosis. Understanding the molecular alterations that lead to TGF-β mediated effects on bone marrow microenvironment can uncover newer therapeutic targets against myelofibrosis. Inhibition of the TGF-β pathway in conjunction with other therapies might prove useful in the reversal of bone marrow fibrosis in PMF.
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Affiliation(s)
- Archana Agarwal
- 1 Steward Carney Hospital, 2100 Dorchester Avenue, Dorchester, MA, USA ; 2 Albert Einstein College of Medicine, Bronx, NY, USA ; 3 University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Kerry Morrone
- 1 Steward Carney Hospital, 2100 Dorchester Avenue, Dorchester, MA, USA ; 2 Albert Einstein College of Medicine, Bronx, NY, USA ; 3 University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Matthias Bartenstein
- 1 Steward Carney Hospital, 2100 Dorchester Avenue, Dorchester, MA, USA ; 2 Albert Einstein College of Medicine, Bronx, NY, USA ; 3 University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Zhizhuang Joe Zhao
- 1 Steward Carney Hospital, 2100 Dorchester Avenue, Dorchester, MA, USA ; 2 Albert Einstein College of Medicine, Bronx, NY, USA ; 3 University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Amit Verma
- 1 Steward Carney Hospital, 2100 Dorchester Avenue, Dorchester, MA, USA ; 2 Albert Einstein College of Medicine, Bronx, NY, USA ; 3 University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Swati Goel
- 1 Steward Carney Hospital, 2100 Dorchester Avenue, Dorchester, MA, USA ; 2 Albert Einstein College of Medicine, Bronx, NY, USA ; 3 University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
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Abbonante V, Di Buduo CA, Gruppi C, Malara A, Gianelli U, Celesti G, Anselmo A, Laghi L, Vercellino M, Visai L, Iurlo A, Moratti R, Barosi G, Rosti V, Balduini A. Thrombopoietin/TGF-β1 Loop Regulates Megakaryocyte Extracellular Matrix Component Synthesis. Stem Cells 2016; 34:1123-33. [PMID: 26748484 DOI: 10.1002/stem.2285] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 11/13/2015] [Accepted: 12/01/2015] [Indexed: 11/11/2022]
Abstract
Extracellular matrix (ECM) components initiate crucial biochemical and biomechanical cues that are required for bone marrow homeostasis. In our research, we prove that a peri-cellular matrix composed primarily of type III and type IV collagens, and fibronectin surrounds human megakaryocytes in the bone marrow. The data we collected support the hypothesis that bone marrow megakaryocytes possess a complete mechanism to synthesize the ECM components, and that thrombopoietin is a pivotal regulator of this new function inducing transforming growth factor-β1 (TGF-β1) release and consequent activation of the downstream pathways, both in vitro and in vivo. This activation results in a dose dependent increase of ECM component synthesis by megakaryocytes, which is reverted upon incubation with JAK and TGF-β1 receptor specific inhibitors. These data are pivotal for understanding the central role of megakaryocytes in creating their own regulatory niche within the bone marrow environment.
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Affiliation(s)
- Vittorio Abbonante
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.,Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Christian A Di Buduo
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.,Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Cristian Gruppi
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.,Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Alessandro Malara
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.,Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Umberto Gianelli
- Hematopathology Service, Division of Pathology, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Giuseppe Celesti
- Laboratory of Molecular Gastroenterology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Achille Anselmo
- Laboratory of Molecular Gastroenterology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Luigi Laghi
- Laboratory of Molecular Gastroenterology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Marco Vercellino
- Center for Tissue Engineering (CIT), INSTM UdR of Pavia, University of Pavia, Pavia, Italy.,Department of Occupational Medicine, Ergonomics and Disability, Salvatore Maugeri Foundation (FSM), Laboratory of Nanotechnology, Pavia, Italy
| | - Livia Visai
- Center for Tissue Engineering (CIT), INSTM UdR of Pavia, University of Pavia, Pavia, Italy.,Department of Occupational Medicine, Ergonomics and Disability, Salvatore Maugeri Foundation (FSM), Laboratory of Nanotechnology, Pavia, Italy
| | - Alessandra Iurlo
- Oncohematology of the Elderly Unit, Oncohematology Division, IRCCS Ca' Granda-Maggiore Policlinico Hospital Foundation, Milan, Italy
| | - Remigio Moratti
- Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Giovanni Barosi
- Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Vittorio Rosti
- Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Alessandra Balduini
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.,Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy.,Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, USA
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McLornan DP, Khan AA, Harrison CN. Immunological Consequences of JAK Inhibition: Friend or Foe? Curr Hematol Malig Rep 2015. [PMID: 26292803 DOI: 10.1007/s11899-015-0284-z.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Over the last decade, unparalleled advances have been made within the field of 'Philadelphia chromosome'-negative myeloproliferative neoplasms (MPN) regarding both disease pathogenesis and therapeutic targeting. The discovery of deregulated JAK-STAT signalling in MPN led to the rapid development of JAK inhibitor agents, targeting both mutated and wild-type JAK, which have significantly altered the therapeutic paradigm for patients with MPN. Although the largest population treated with these agents incorporates those with myelofibrosis, increasing data supports potential usage in other MPNs such as essential thromocythaemia and polycythaemia vera. Many MPNs are associated with a hyperinflammatory state and deregulation of immune homeostasis. Over the last few years, research has focused on attempting to decipher the complex and context-dependent changes that contribute to this immune deregulation. Moreover, very recent studies have demonstrated significant JAK inhibitor-mediated effects within the T cell, natural killer cell and dendritic cell compartments following exposure to JAK inhibitors. In parallel, case reports of infections occurring following exposure to ruxolitinib, many of which are atypical, have focused research efforts on delineating JAK inhibitor-associated immunological consequences. Within this review article, we will describe what is currently known about MPN-associated immune deregulation and JAK inhibitor-mediated immunomodulation.
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Affiliation(s)
- Donal P McLornan
- Department of Haematology, Guy's and St. Thomas' NHS Foundation Trust, London, SE1 7EH, UK. .,Department of Haematological Medicine, King's College Hospital NHS Foundation Trust, London, SE5 9NU, UK.
| | - Alesia A Khan
- Department of Haematology, Guy's and St. Thomas' NHS Foundation Trust, London, SE1 7EH, UK
| | - Claire N Harrison
- Department of Haematology, Guy's and St. Thomas' NHS Foundation Trust, London, SE1 7EH, UK
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McLornan DP, Khan AA, Harrison CN. Immunological Consequences of JAK Inhibition: Friend or Foe? Curr Hematol Malig Rep 2015; 10:370-9. [PMID: 26292803 DOI: 10.1007/s11899-015-0284-z] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Donal P McLornan
- Department of Haematology, Guy's and St. Thomas' NHS Foundation Trust, London, SE1 7EH, UK.
- Department of Haematological Medicine, King's College Hospital NHS Foundation Trust, London, SE5 9NU, UK.
| | - Alesia A Khan
- Department of Haematology, Guy's and St. Thomas' NHS Foundation Trust, London, SE1 7EH, UK
| | - Claire N Harrison
- Department of Haematology, Guy's and St. Thomas' NHS Foundation Trust, London, SE1 7EH, UK
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Michiels JJ, Valster F, Wielenga J, Schelfout K, Raeve HD. European vs 2015-World Health Organization clinical molecular and pathological classification of myeloproliferative neoplasms. World J Hematol 2015; 4:16-53. [DOI: 10.5315/wjh.v4.i3.16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 11/15/2014] [Accepted: 04/30/2015] [Indexed: 02/05/2023] Open
Abstract
The BCR/ABL fusion gene or the Ph1-chromosome in the t(9;22)(q34;q11) exerts a high tyrokinase acticity, which is the cause of chronic myeloid leukemia (CML). The 1990 Hannover Bone Marrow Classification separated CML from the myeloproliferative disorders essential thrombocythemia (ET), polycythemia vera (PV) and chronic megakaryocytic granulocytic myeloproliferation (CMGM). The 2006-2008 European Clinical Molecular and Pathological (ECMP) criteria discovered 3 variants of thrombocythemia: ET with features of PV (prodromal PV), “true” ET and ET associated with CMGM. The 2008 World Health Organization (WHO)-ECMP and 2014 WHO-CMP classifications defined three phenotypes of JAK2V617F mutated ET: normocellular ET (WHO-ET), hypercelluar ET due to increased erythropoiesis (prodromal PV) and ET with hypercellular megakaryocytic-granulocytic myeloproliferation. The JAK2V617F mutation load in heterozygous WHO-ET is low and associated with normal life expectance. The hetero/homozygous JAK2V617F mutation load in PV and myelofibrosis is related to myeloproliferative neoplasm (MPN) disease burden in terms of symptomatic splenomegaly, constitutional symptoms, bone marrow hypercellularity and myelofibrosis. JAK2 exon 12 mutated MPN presents as idiopathic eryhrocythemia and early stage PV. According to 2014 WHO-CMP criteria JAK2 wild type MPL515 mutated ET is the second distinct thrombocythemia featured by clustered giant megakaryocytes with hyperlobulated stag-horn-like nuclei, in a normocellular bone marrow consistent with the diagnosis of “true” ET. JAK2/MPL wild type, calreticulin mutated hypercellular ET appears to be the third distinct thrombocythemia characterized by clustered larged immature dysmorphic megakaryocytes and bulky (bulbous) hyperchromatic nuclei consistent with CMGM or primary megakaryocytic granulocytic myeloproliferation.
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Malara A, Abbonante V, Di Buduo CA, Tozzi L, Currao M, Balduini A. The secret life of a megakaryocyte: emerging roles in bone marrow homeostasis control. Cell Mol Life Sci 2015; 72:1517-36. [PMID: 25572292 PMCID: PMC4369169 DOI: 10.1007/s00018-014-1813-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 12/15/2014] [Accepted: 12/19/2014] [Indexed: 12/19/2022]
Abstract
Megakaryocytes are rare cells found in the bone marrow, responsible for the everyday production and release of millions of platelets into the bloodstream. Since the discovery and cloning, in 1994, of their principal humoral factor, thrombopoietin, and its receptor c-Mpl, many efforts have been directed to define the mechanisms underlying an efficient platelet production. However, more recently different studies have pointed out new roles for megakaryocytes as regulators of bone marrow homeostasis and physiology. In this review we discuss the interaction and the reciprocal regulation of megakaryocytes with the different cellular and extracellular components of the bone marrow environment. Finally, we provide evidence that these processes may concur to the reconstitution of the bone marrow environment after injury and their deregulation may lead to the development of a series of inherited or acquired pathologies.
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Affiliation(s)
- Alessandro Malara
- Department of Molecular Medicine, University of Pavia, Via Forlanini 6, 27100 Pavia, Italy
- Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Vittorio Abbonante
- Department of Molecular Medicine, University of Pavia, Via Forlanini 6, 27100 Pavia, Italy
- Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Christian A. Di Buduo
- Department of Molecular Medicine, University of Pavia, Via Forlanini 6, 27100 Pavia, Italy
- Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Lorenzo Tozzi
- Department of Molecular Medicine, University of Pavia, Via Forlanini 6, 27100 Pavia, Italy
- Department of Biomedical Engineering, Tufts University, Medford, MA USA
| | - Manuela Currao
- Department of Molecular Medicine, University of Pavia, Via Forlanini 6, 27100 Pavia, Italy
- Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
| | - Alessandra Balduini
- Department of Molecular Medicine, University of Pavia, Via Forlanini 6, 27100 Pavia, Italy
- Laboratory of Biotechnology, IRCCS San Matteo Foundation, Pavia, Italy
- Department of Biomedical Engineering, Tufts University, Medford, MA USA
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45
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TGF-β signaling in the control of hematopoietic stem cells. Blood 2015; 125:3542-50. [PMID: 25833962 DOI: 10.1182/blood-2014-12-618090] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 03/30/2015] [Indexed: 02/08/2023] Open
Abstract
Blood is a tissue with high cellular turnover, and its production is a tightly orchestrated process that requires constant replenishment. All mature blood cells are generated from hematopoietic stem cells (HSCs), which are the self-renewing units that sustain lifelong hematopoiesis. HSC behavior, such as self-renewal and quiescence, is regulated by a wide array of factors, including external signaling cues present in the bone marrow. The transforming growth factor-β (TGF-β) family of cytokines constitutes a multifunctional signaling circuitry, which regulates pivotal functions related to cell fate and behavior in virtually all tissues of the body. In the hematopoietic system, TGF-β signaling controls a wide spectrum of biological processes, from homeostasis of the immune system to quiescence and self-renewal of HSCs. Here, we review key features and emerging concepts pertaining to TGF-β and downstream signaling pathways in normal HSC biology, featuring aspects of aging, hematologic disease, and how this circuitry may be exploited for clinical purposes in the future.
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Bartalucci N, Bogani C, Vannucchi AM. Preclinical models for drug selection in myeloproliferative neoplasms. Curr Hematol Malig Rep 2014; 8:317-24. [PMID: 24146202 DOI: 10.1007/s11899-013-0182-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The discovery that an abnormally activated JAK-STAT signaling pathway is central to the pathogenesis of myeloproliferative neoplasms has promoted the clinical development of small-molecule JAK2 inhibitors. These agents have shown remarkable efficacy in disease control, but do not induce molecular remission; on the other hand, interferon holds the promise to target the putative hematopoietic progenitor cell initiating the disease. The presence of additional molecular abnormalities indicates a high molecular complexity of myeloproliferative neoplasms, and the need for simultaneously targeting different targets. Several drugs are currently under study as single agents and in combination. This review briefly describes the several in vitro and in vivo models of myeloproliferative neoplasms that are being used as preclinical models for drug development.
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Affiliation(s)
- Niccolò Bartalucci
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
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48
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Are we altering the natural history of primary myelofibrosis? Leuk Res 2014; 38:1004-12. [PMID: 24931396 DOI: 10.1016/j.leukres.2014.04.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 04/14/2014] [Accepted: 04/24/2014] [Indexed: 12/12/2022]
Abstract
Primary myelofibrosis (PMF) is a clonal hematologic malignancy with a variable disease course; survival ranges from months to years. Historically, only allogeneic hematopoietic stem cell transplantation (alloHSCT) has demonstrated an ability to alter the natural history of PMF, but high treatment-related mortality risks limit the utility of alloHSCT to a minority of patients with PMF or myelofibrosis secondary to other myeloproliferative neoplasms. The recent development of therapies that regulate the Janus kinase-signal transducer and activator of transcription signaling pathway has changed the treatment landscape from primarily palliative treatment to potential disease modification.
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Varricchio L, Mancini A, Migliaccio AR. Pathological interactions between hematopoietic stem cells and their niche revealed by mouse models of primary myelofibrosis. Expert Rev Hematol 2014; 2:315-334. [PMID: 20352017 DOI: 10.1586/ehm.09.17] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Primary myelofibrosis (PMF) belongs to the Philadelphia-negative myeloproliferative neoplasms and is a hematological disorder caused by abnormal function of the hematopoietic stem cells. The disease manifests itself with a plethora of alterations, including anemia, splenomegaly and extramedullary hematopoiesis. Its hallmarks are progressive marrow fibrosis and atypical megakaryocytic hyperplasia, two distinctive features used to clinically monitor disease progression. In an attempt to investigate the role of abnormal megakaryocytopoiesis in the pathogenesis of PMF, several transgenic mouse models have been generated. These models are based either on mutations that interfere with the extrinsic (thrombopoietin and its receptor, MPL) and intrinsic (the GATA1 transcription factor) control of normal megakaryocytopoiesis, or on known genetic lesions associated with the human disease. Here we provide an up-to-date review on the insights into the pathobiology of human PMF achieved by studying these animal models, with particular emphasis on results obtained with Gata1(low) mice.
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Affiliation(s)
- Lilian Varricchio
- Department of Medicine, Division of Hematology/Oncology, Mount Sinai School of Medicine, One Gustave L. Levy Place, Box 1079, New York, NY 10029, USA Tel.: +1 212 241 6974
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