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Subbarayudu S, Namasivayam SKR, Arockiaraj J. Immunomodulation in Non-traditional Therapies for Methicillin-resistant Staphylococcus aureus (MRSA) Management. Curr Microbiol 2024; 81:346. [PMID: 39240286 DOI: 10.1007/s00284-024-03875-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Accepted: 08/26/2024] [Indexed: 09/07/2024]
Abstract
The rise of methicillin-resistant Staphylococcus aureus (MRSA) poses a significant challenge in clinical settings due to its ability to evade conventional antibiotic treatments. This overview explores the potential of immunomodulatory strategies as alternative therapeutic approaches to combat MRSA infections. Traditional antibiotics are becoming less effective, necessitating innovative solutions that harness the body's immune system to enhance pathogen clearance. Recent advancements in immunotherapy, including the use of antimicrobial peptides, phage therapy, and mechanisms of immune cells, demonstrate promise in enhancing the body's ability to clear MRSA infections. However, the exact interactions between these therapies and immunomodulation are not fully understood, underscoring the need for further research. Hence, this review aims to provide a broad overview of the current understanding of non-traditional therapeutics and their impact on immune responses, which could lead to more effective MRSA treatment strategies. Additionally, combining immunomodulatory agents with existing antibiotics may improve outcomes, particularly for immunocompromised patients or those with chronic infections. As the landscape of antibiotic resistance evolves, the development of effective immunotherapeutic strategies could play a vital role in managing MRSA infections and reducing reliance on traditional antibiotics. Future research must focus on optimizing these approaches and validating their efficacy in diverse clinical populations to address the urgent need for effective MRSA management strategies.
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Affiliation(s)
- Suthi Subbarayudu
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu District, Tamil Nadu, 603203, India
| | - S Karthick Raja Namasivayam
- Centre for Applied Research, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu, 602105, India.
| | - Jesu Arockiaraj
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu District, Tamil Nadu, 603203, India.
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2
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Kihtir Z, Çelik K, Tayfun Küpesiz F, Küpesiz OA, Kocacik Uygun DF, Arayici S, Ongun H, Acarbulut İ, Sağlam C, Ceylaner G, Bingöl A. Specific Granule Deficiency Due To Novel Homozygote SMARCD2 Variant. PEDIATRIC ALLERGY, IMMUNOLOGY, AND PULMONOLOGY 2022; 35:43-46. [PMID: 35320004 DOI: 10.1089/ped.2021.0070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Background: Specific granule deficiency (SGD) is a rare immunodeficiency associated with CCAT/enhancer-binding protein epsilon (CEBPE) gene variants. It can cause severe recurrent infections and is lethal without successful stem cell transplantation. Few cases with SGD of both type 1 and type 2 have been described in the literature. In this study, we present the first report of a case with a novel homozygous c.511 C > T (p.Gln171Ter) mutation in the SMARCD2 gene of SGD type 2, which was successfully treated with bone marrow transplantation. Case: A male infant presented to our neonatal intensive care unit on the second day of life with an icteric appearance and mild hypotonia. He was evaluated for immunodeficiency as the cause of delayed cord separation and refractory neutropenia. At 6 weeks of age, SGD type 2 with a new variant was diagnosed and successfully treated by bone marrow transplantation. Conclusion: SGD is an immunodeficiency disease that is quite rare. However, we believe that SGD diagnosis and associated new variants can be detected more frequently with the widespread use of all whole-exome sequencing techniques.
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Affiliation(s)
- Zeynep Kihtir
- Department of Neonatology, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Kıymet Çelik
- Department of Neonatology, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Funda Tayfun Küpesiz
- Department of Pediatric Hematology and Oncology, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Osman Alphan Küpesiz
- Department of Pediatric Hematology and Oncology, Akdeniz University Medical Faculty, Antalya, Turkey
| | | | - Sema Arayici
- Department of Neonatology, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Hakan Ongun
- Department of Neonatology, Akdeniz University Medical Faculty, Antalya, Turkey
| | - İpek Acarbulut
- Department of Neonatology, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Celal Sağlam
- Department of Neonatology, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Gülay Ceylaner
- Intergen Genetic and Rare Diseases Diagnosis and Research Center, Ankara, Turkey
| | - Ayşen Bingöl
- Department of Pediatric Allergy and Immunology, Akdeniz University Medical Faculty, Antalya, Turkey
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3
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Kargapolova Y, Geißen S, Zheng R, Baldus S, Winkels H, Adam M. The Enzymatic and Non-Enzymatic Function of Myeloperoxidase (MPO) in Inflammatory Communication. Antioxidants (Basel) 2021; 10:antiox10040562. [PMID: 33916434 PMCID: PMC8066882 DOI: 10.3390/antiox10040562] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/23/2021] [Accepted: 03/30/2021] [Indexed: 12/14/2022] Open
Abstract
Myeloperoxidase is a signature enzyme of polymorphonuclear neutrophils in mice and humans. Being a component of circulating white blood cells, myeloperoxidase plays multiple roles in various organs and tissues and facilitates their crosstalk. Here, we describe the current knowledge on the tissue- and lineage-specific expression of myeloperoxidase, its well-studied enzymatic activity and incoherently understood non-enzymatic role in various cell types and tissues. Further, we elaborate on Myeloperoxidase (MPO) in the complex context of cardiovascular disease, innate and autoimmune response, development and progression of cancer and neurodegenerative diseases.
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4
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Tangye SG, Al-Herz W, Bousfiha A, Cunningham-Rundles C, Franco JL, Holland SM, Klein C, Morio T, Oksenhendler E, Picard C, Puel A, Puck J, Seppänen MRJ, Somech R, Su HC, Sullivan KE, Torgerson TR, Meyts I. The Ever-Increasing Array of Novel Inborn Errors of Immunity: an Interim Update by the IUIS Committee. J Clin Immunol 2021; 41:666-679. [PMID: 33598806 PMCID: PMC7889474 DOI: 10.1007/s10875-021-00980-1] [Citation(s) in RCA: 152] [Impact Index Per Article: 50.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/20/2021] [Indexed: 12/12/2022]
Abstract
The most recent updated classification of inborn errors of immunity/primary immunodeficiencies, compiled by the International Union of Immunological Societies Expert Committee, was published in January 2020. Within days of completing this report, it was already out of date, evidenced by the frequent publication of genetic variants proposed to cause novel inborn errors of immunity. As the next formal report from the IUIS Expert Committee will not be published until 2022, we felt it important to provide the community with a brief update of recent contributions to the field of inborn errors of immunity. Herein, we highlight studies that have identified 26 additional monogenic gene defects that reach the threshold to represent novel causes of immune defects.
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Affiliation(s)
- Stuart G Tangye
- Garvan Institute of Medical Research, Darlinghurst, Sydney, New South Wales, 2010, Australia. .,Faculty of Medicine, St Vincent's Clinical School, UNSW Sydney, Sydney, NSW, Australia.
| | - Waleed Al-Herz
- Department of Pediatrics, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Aziz Bousfiha
- Laboratoire d'Immunologie Clinique, d'Inflammation et d'Allergy LICIA Clinical Immunology Unit, Casablanca Children's Hospital, Ibn Rochd Medical School, King Hassan II University, Casablanca, Morocco
| | | | - Jose Luis Franco
- Grupo de Inmunodeficiencias Primarias, Facultad de Medicina, Universidad de Antioquia UdeA, Medellin, Colombia
| | - Steven M Holland
- Laboratory of Clinical Immunology & Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Christoph Klein
- Dr von Hauner Childrens Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Tomohiro Morio
- Department of Pediatrics and Developmental Biology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eric Oksenhendler
- Department of Clinical Immunology, Hôpital Saint-Louis, APHP, University Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Capucine Picard
- Study Center for Primary Immunodeficiencies, Necker Hospital for Sick Children, APHP, Paris, France.,Laboratory of Lymphocyte Activation and Susceptibility to EBV, INSERM UMR1163, Imagine Institute, Necker Hospital for Sick Children, Paris University, Paris, France
| | - Anne Puel
- Laboratory of Human Genetics of Infectious Diseases, INSERM U1163, Necker Hospital, 75015, Paris, France.,Imagine Institute, University of Paris, 75015, Paris, France
| | - Jennifer Puck
- Department of Pediatrics, University of California San Francisco and UCSF Benioff Children's Hospital, San Francisco, CA, USA
| | - Mikko R J Seppänen
- Adult Immunodeficiency Unit, Infectious Diseases, Inflammation Center and Rare Diseases Center, Childrens Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Raz Somech
- Pediatric Department and Immunology Unit, Sheba Medical Center, Tel Aviv, Israel
| | - Helen C Su
- Laboratory of Clinical Immunology & Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Kathleen E Sullivan
- Division of Allergy Immunology, Department of Pediatrics, Childrens Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | | | - Isabelle Meyts
- Department of Immunology and Microbiology, Laboratory for Inborn Errors of Immunity, Department of Pediatrics, University Hospitals Leuven and KU Leuven, 3000, Leuven, Belgium
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Park B, Liu GY. Immune-Based Anti-Staphylococcal Therapeutic Approaches. Microorganisms 2021; 9:microorganisms9020328. [PMID: 33562054 PMCID: PMC7915210 DOI: 10.3390/microorganisms9020328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/02/2021] [Accepted: 02/03/2021] [Indexed: 12/20/2022] Open
Abstract
Widespread methicillin-resistant Staphylococcus aureus (S. aureus) infections within community and healthcare settings are responsible for accelerated development of antibiotic resistance. As the antibiotic pipeline began drying up, alternative strategies were sought for future treatment of S. aureus infections. Here, we review immune-based anti-staphylococcal strategies that, unlike conventional antibiotics, target non-essential gene products elaborated by the pathogen. These strategies stimulate narrow or broad host immune mechanisms that are critical for anti-staphylococcal defenses. Alternative approaches aim to disrupt bacterial virulence mechanisms that enhance pathogen survival or induce immunopathology. Although immune-based therapeutics are unlikely to replace antibiotics in patient treatment in the near term, they have the potential to significantly improve upon the performance of antibiotics for treatment of invasive staphylococcal diseases.
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Affiliation(s)
- Bonggoo Park
- Cedars Sinai Medical Center, Division of Pediatric Infectious Diseases and the Immunobiology Research Institute, Los Angeles, CA 90048, USA;
| | - George Y. Liu
- Department of Pediatrics, University of California San Diego, La Jolla, CA 92093, USA
- Correspondence:
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Ugonotti J, Chatterjee S, Thaysen-Andersen M. Structural and functional diversity of neutrophil glycosylation in innate immunity and related disorders. Mol Aspects Med 2020; 79:100882. [PMID: 32847678 DOI: 10.1016/j.mam.2020.100882] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 07/14/2020] [Indexed: 12/11/2022]
Abstract
The granulated neutrophils are abundant innate immune cells that utilize bioactive glycoproteins packed in cytosolic granules to fight pathogenic infections, but the neutrophil glycobiology remains poorly understood. Facilitated by technological advances in glycoimmunology, systems glycobiology and glycoanalytics, a considerable body of literature reporting on novel aspects of neutrophil glycosylation has accumulated. Herein, we summarize the building knowledge of the structural and functional diversity displayed by N- and O-linked glycoproteins spatiotemporally expressed and sequentially brought-into-action across the diverse neutrophil life stages during bone marrow maturation, movements to, from and within the blood circulation and microbicidal processes at the inflammatory sites in peripheral tissues. It transpires that neutrophils abundantly decorate their granule glycoproteins including neutrophil elastase, myeloperoxidase and cathepsin G with peculiar glyco-signatures not commonly reported in other areas of human glycobiology such as hyper-truncated chitobiose core- and paucimannosidic-type N-glycans and monoantennary complex-type N-glycans. Sialyl Lewisx, Lewisx, poly-N-acetyllactosamine extensions and core 1-/2-type O-glycans are also common neutrophil glyco-signatures. Granule-specific glycosylation is another fascinating yet not fully understood feature of neutrophils. Recent literature suggests that unconventional biosynthetic pathways and functions underpin these prominent neutrophil-associated glyco-phenotypes. The impact of glycosylation on key neutrophil effector functions including extravasation, degranulation, phagocytosis and formation of neutrophil extracellular traps during normal physiological conditions and in innate immune-related diseases is discussed. We also highlight new technologies that are expected to further advance neutrophil glycobiology and briefly discuss the untapped diagnostic and therapeutic potential of neutrophil glycosylation that could open avenues to combat the increasingly prevalent innate immune disorders.
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Affiliation(s)
- Julian Ugonotti
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia; Biomolecular Discovery Research Centre, Macquarie University, Sydney, NSW, 2109, Australia
| | - Sayantani Chatterjee
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia; Biomolecular Discovery Research Centre, Macquarie University, Sydney, NSW, 2109, Australia
| | - Morten Thaysen-Andersen
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia; Biomolecular Discovery Research Centre, Macquarie University, Sydney, NSW, 2109, Australia.
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7
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Lehman HK, Segal BH. The role of neutrophils in host defense and disease. J Allergy Clin Immunol 2020; 145:1535-1544. [PMID: 32283205 DOI: 10.1016/j.jaci.2020.02.038] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 01/15/2020] [Accepted: 02/05/2020] [Indexed: 12/21/2022]
Abstract
Neutrophils, the most abundant circulating leukocyte, are critical for host defense. Granulopoiesis is under the control of transcriptional factors and culminates in mature neutrophils with a broad armamentarium of antimicrobial pathways. These pathways include nicotinamide adenine dinucleotide phosphate oxidase, which generates microbicidal reactive oxidants, and nonoxidant pathways that target microbes through several mechanisms. Activated neutrophils can cause or worsen tissue injury, underscoring the need for calibration of activation and resolution of inflammation when infection has been cleared. Acquired neutrophil disorders are typically caused by cytotoxic chemotherapy or immunosuppressive agents. Primary neutrophil disorders typically result from disabling mutations of individual genes that result in impaired neutrophil number or function, and provide insight into basic mechanisms of neutrophil biology. Neutrophils can also be activated by noninfectious causes, including trauma and cellular injury, and can have off-target effects in which pathways that typically defend against infection exacerbate injury and disease. These off-target effects include acute organ injury, autoimmunity, and variable effects on the tumor microenvironment that can limit or worsen tumor progression. A greater understanding of neutrophil plasticity in these conditions is likely to pave the way to new therapeutic approaches.
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Affiliation(s)
- Heather K Lehman
- Division of Allergy/Immunology & Rheumatology, Department of Pediatrics, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY
| | - Brahm H Segal
- Roswell Park Comprehensive Cancer Center, University at Buffalo, Buffalo, NY.
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8
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Leszcynska M, Patel B, Morrow M, Chamizo W, Tuite G, Berman DM, Potthast K, Hsu AP, Holland SM, Leiding JW. Brain Abscess as Severe Presentation of Specific Granule Deficiency. Front Pediatr 2020; 8:117. [PMID: 32391290 PMCID: PMC7188777 DOI: 10.3389/fped.2020.00117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 03/05/2020] [Indexed: 11/29/2022] Open
Abstract
Severe invasive infections such as brain abscess in a child should prompt an immune evaluation. Specific granule deficiency (SGD) is a rare morphologic neutrophil granular defect characterized by reduced granules within neutrophils, absence of granule proteins, and bilobed nuclei. Patients are susceptible to invasive bacterial infections and Candida infections. Mutations in CCAT/enhancer binding protein epsilon (C/EBP-ε) are the most commonly described cause of SGD. The dihydrorhodamine assay is a quantitative and qualitative functional test that determines the oxidative burst and killing potential of neutrophils. Herein, we describe two brothers with specific granule deficiency. The index patient had a history of cellulitis twice in the first year of life and then presented at 13 months age with fever, leukocytosis, and right sided weakness. A large space occupying brain abscess was diagnosed. He underwent surgical drainage and cultures yielded Staphylococcus aureus. This infection prompted his diagnosis. His older brother had also been healthy but too had had several episodes of cellulitis. His brother too was diagnosed with SGD when family genetic screening was performed. Evaluation of the index patient included a peripheral smear that showed absent neutrophil granule presence. Forward and side scatter of whole blood via flow cytometry revealed a loss of granularity of neutrophils. A DHR was performed to rule out functional killing defects. After stimulation with PMA, neutrophils from the index patient displayed three distinct patterns, two with abnormal oxidase production, and two with reduced function. Both patients were ultimately diagnosed with SGD and remain on lifelong anti-bacterial prophylaxis. Diagnosis of SGD relies on establishing reduced or absent granularity within neutrophils. Lifelong anti-bacterial and anti-fungal prophylaxis is indicated. Hematopoietic cell transplantation has also been curative.
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Affiliation(s)
- Maria Leszcynska
- Pediatric Residency Training Program, Johns Hopkins-All Children's Hospital, St. Petersburg, FL, United States
| | - Bhumika Patel
- Division of Allergy and Immunology, Department of Pediatrics, University of South Florida, St. Petersburg, FL, United States
| | - Matthew Morrow
- Immunology Lab, Department of Pathology and Laboratory Medicine, Johns Hopkins All Children's Hospital, St. Petersburg, FL, United States
| | - Wil Chamizo
- Immunology Lab, Department of Pathology and Laboratory Medicine, Johns Hopkins All Children's Hospital, St. Petersburg, FL, United States
| | - Gerald Tuite
- Pediatric Neurosurgery, Johns Hopkins All Children's Hospital, St. Petersburg, FL, United States
| | - David M Berman
- Pediatric Infectious Diseases, Johns Hopkins All Children's Hospital, St. Petersburg, FL, United States
| | - Kevin Potthast
- Department of Radiology, Johns Hopkins All Children's Hospital, St. Petersburg, FL, United States
| | - Amy P Hsu
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Steven M Holland
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Jennifer W Leiding
- Division of Allergy and Immunology, Department of Pediatrics, University of South Florida, St. Petersburg, FL, United States
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9
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Abstract
Primary disorders of neutrophil function result from impairment in neutrophil responses that are critical for host defense. This chapter summarizes inherited disorders of neutrophils that cause defects in neutrophil adhesion, migration, and oxidative killing. These include the leukocyte adhesion deficiencies, actin defects and other disorders of chemotaxis, hyperimmunoglobulin E syndrome, Chédiak-Higashi Syndrome, neutrophil specific granule deficiency, chronic granulomatous disease, and myeloperoxidase deficiency. Diagnostic tests and treatment approaches are also summarized for each neutrophil disorder.
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10
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Mugoni V, Panella R, Cheloni G, Chen M, Pozdnyakova O, Stroopinsky D, Guarnerio J, Monteleone E, Lee JD, Mendez L, Menon AV, Aster JC, Lane AA, Stone RM, Galinsky I, Zamora JC, Lo-Coco F, Bhasin MK, Avigan D, Longo L, Clohessy JG, Pandolfi PP. Vulnerabilities in mIDH2 AML confer sensitivity to APL-like targeted combination therapy. Cell Res 2019; 29:446-459. [PMID: 31024166 DOI: 10.1038/s41422-019-0162-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 03/12/2019] [Indexed: 12/14/2022] Open
Abstract
Although targeted therapies have proven effective and even curative in human leukaemia, resistance often ensues. IDH enzymes are mutated in ~20% of human AML, with targeted therapies under clinical evaluation. We here characterize leukaemia evolution from mutant IDH2 (mIDH2)-dependence to independence identifying key targetable vulnerabilities of mIDH2 leukaemia that are retained during evolution and progression from early to late stages. Mechanistically, we find that mIDH2 leukaemia are metastable and vulnerable at two distinct levels. On the one hand, they are characterized by oxidative and genotoxic stress, in spite of increased 1-carbon metabolism and glutathione levels. On the other hand, mIDH2 leukaemia display inhibition of LSD1 and a resulting transcriptional signature of all-trans retinoic acid (ATRA) sensitization, in spite of a state of suppressed ATRA signalling due to increased levels of PIN1. We further identify GSH/ROS and PIN1/LSD1 as critical nodes for leukaemia maintenance and the combination of ATRA and arsenic trioxide (ATO) as a key therapeutic modality to target these vulnerabilities. Strikingly, we demonstrate that the combination of ATRA and ATO proves to be a powerfully synergistic and effective therapy in a number of mouse and human mIDH1/2 leukemic models. Thus, our findings pave the way towards the treatment of a sizable fraction of human AMLs through targeted APL-like combinatorial therapies.
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Affiliation(s)
- Vera Mugoni
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA
| | - Riccardo Panella
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA
| | - Giulia Cheloni
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA
| | - Ming Chen
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA
| | - Olga Pozdnyakova
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Dina Stroopinsky
- Division of Hematology and Hematologic Malignancies, Department of Medicine, Beth Israel Deaconess Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jlenia Guarnerio
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA
| | - Emanuele Monteleone
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA.,Molecular Biotechnology Center and Department of Molecular Biotechnology and Health Sciences, University of Turin, Via Nizza 52, 10126, Turin, Italy
| | - Jonathan David Lee
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA
| | - Lourdes Mendez
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA
| | - Archita Venugopal Menon
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA
| | - Jon Christopher Aster
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Andrew A Lane
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Richard Maury Stone
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Ilene Galinsky
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - José Cervera Zamora
- Biobanco La Fe - Instituto de Investigation Sanitaria La Fe (IIS-LA FE), Avda. de Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Francesco Lo-Coco
- Department of Biomedicine and Prevention, University of Rome "Tor Vergata", Rome, Italy.,Neuro-Oncohematology Unit, Santa Lucia Foundation, Rome, Italy
| | - Manoj Kumar Bhasin
- Division of IMBIO, Department of Medicine, BIDMC Genomics, Proteomics, Bioinformatics and Systems Biology Center, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - David Avigan
- Division of Hematology and Hematologic Malignancies, Department of Medicine, Beth Israel Deaconess Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Letizia Longo
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA
| | - John Gerard Clohessy
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA.,Preclinical Murine Pharmacogenetics Core, Beth Israel Deaconess Cancer Center, Dana Farber/Harvard Cancer Center, Boston, USA
| | - Pier Paolo Pandolfi
- Cancer Research Institute, Beth Israel Deaconess Cancer Center; Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA.
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12
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Serwas NK, Huemer J, Dieckmann R, Mejstrikova E, Garncarz W, Litzman J, Hoeger B, Zapletal O, Janda A, Bennett KL, Kain R, Kerjaschky D, Boztug K. CEBPE-Mutant Specific Granule Deficiency Correlates With Aberrant Granule Organization and Substantial Proteome Alterations in Neutrophils. Front Immunol 2018; 9:588. [PMID: 29651288 PMCID: PMC5884887 DOI: 10.3389/fimmu.2018.00588] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 03/08/2018] [Indexed: 11/13/2022] Open
Abstract
Specific granule deficiency (SGD) is a rare disorder characterized by abnormal neutrophils evidenced by reduced granules, absence of granule proteins, and atypical bilobed nuclei. Mutations in CCAAT/enhancer-binding protein-ε (CEBPE) are one molecular etiology of the disease. Although C/EBPε has been studied extensively, the impact of CEBPE mutations on neutrophil biology remains elusive. Here, we identified two SGD patients bearing a previously described heterozygous mutation (p.Val218Ala) in CEBPE. We took this rare opportunity to characterize SGD neutrophils in terms of granule distribution and protein content. Granules of patient neutrophils were clustered and polarized, suggesting that not only absence of specific granules but also defects affecting other granules contribute to the phenotype. Our analysis showed that remaining granules displayed mixed protein content and lacked several glycoepitopes. To further elucidate the impact of mutant CEBPE, we performed detailed proteomic analysis of SGD neutrophils. Beside an absence of several granule proteins in patient cells, we observed increased expression of members of the linker of nucleoskeleton and cytoskeleton complex (nesprin-2, vimentin, and lamin-B2), which control nuclear shape. This suggests that absence of these proteins in healthy individuals might be responsible for segmented shapes of neutrophilic nuclei. We further show that the heterozygous mutation p.Val218Ala in CEBPE causes SGD through prevention of nuclear localization of the protein product. In conclusion, we uncover that absence of nuclear C/EBPε impacts on spatiotemporal expression and subsequent distribution of several granule proteins and further on expression of proteins controlling nuclear shape.
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Affiliation(s)
- Nina K Serwas
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Jakob Huemer
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Régis Dieckmann
- Clinical Institute of Pathology, Medical University of Vienna, Vienna, Austria
| | - Ester Mejstrikova
- Department of Pediatric Hematology and Oncology, 2nd Faculty of Medicine, University Hospital Motol, Prague, Czechia
| | - Wojciech Garncarz
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Jiri Litzman
- Department of Clinical Immunology and Allergology, St. Anne's University Hospital, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Birgit Hoeger
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Ondrej Zapletal
- Department of Pediatric Hematology, University Hospital Brno, Brno, Czechia
| | - Ales Janda
- Center for Chronic Immunodeficiency (CCI), University Medical Center, University of Freiburg, Freiburg, Germany.,Center of Pediatrics and Adolescent Medicine, University Medical Center, University of Freiburg, Freiburg, Germany
| | - Keiryn L Bennett
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Renate Kain
- Clinical Institute of Pathology, Medical University of Vienna, Vienna, Austria
| | - Dontscho Kerjaschky
- Clinical Institute of Pathology, Medical University of Vienna, Vienna, Austria
| | - Kaan Boztug
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria.,Department of Pediatrics, St. Anna Kinderspital and Children's Cancer Research Institute, Medical University of Vienna, Vienna, Austria
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13
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14
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Chang M, Guo F, Zhou Z, Huang X, Yi L, Dou Y, Huan J. HBP induces the expression of monocyte chemoattractant protein-1 via the FAK/PI3K/AKT and p38 MAPK/NF-κB pathways in vascular endothelial cells. Cell Signal 2017; 43:85-94. [PMID: 29288710 DOI: 10.1016/j.cellsig.2017.12.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 12/24/2017] [Indexed: 02/07/2023]
Abstract
Inflammation is characterized by early influx of polymorphonuclear neutrophils (PMNs), followed by a second wave of monocyte recruitment. PMNs mediate monocyte recruitment via their release of heparin binding protein (HBP), which activates CCR2 (CC-chemokine receptor 2) on monocytes. However, the pathways for such signal transmission remain unknown. Accumulating evidences have highlighted the importance of leukocyte-endothelial cell interactions in the initiation of inflammation. In this study, an interesting finding is that HBP enhances the secretion of monocyte chemotactic protein 1(MCP-1), ligand of CCR2, from a third party, the endothelial cells (ECs). HBP-induced increase in MCP-1 production was demonstrated at the protein, mRNA and secretion levels. Exposure of ECs to HBP elicited rapid phosphorylation of FAK/PI3K/AKT and p38 MAPK/NF-κB signaling. MCP-1 levels were attenuated during the response to HBP stimulation by pretreatment with a FAK inhibitor (or siRNA), a PI3K inhibitor, an AKT inhibitor, a p38 inhibitor (or siRNA) and two NF-κB inhibitors. Additionally, pretreatment with inhibitors to FAK, PI3K and AKT led to a decrease in HBP-induced phosphorylation of p38/NF-κB axis. These results showed that HBP induced MCP-1 expression via a sequential activation of the FAK/PI3K/AKT pathway and p38 MAPK/NF-κB axis. Interestingly, the patterns of HBP regulation of the expression of the adhesion molecular VCAM-1 were similar to those seen in MCP-1 after pretreatment with inhibitors (or not). These findings may help to determine key pharmacological points of intervention, thus slowing the progress of inflammatory-mediated responses in certain diseases where inflammation is detrimental to the host.
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Affiliation(s)
- Mengling Chang
- Department of Burn and Plastic Surgery, Shanghai Jiao Tong University, School of Medicine, Rui Jin Hospital, Shanghai, China
| | - Feng Guo
- Department of Burn and Plastic Surgery, Shanghai Jiao Tong University, School of Medicine, Rui Jin Hospital, Shanghai, China
| | - Zengding Zhou
- Department of Burn and Plastic Surgery, Shanghai Jiao Tong University, School of Medicine, Rui Jin Hospital, Shanghai, China
| | - Xiaoqin Huang
- Department of Burn and Plastic Surgery, Shanghai Jiao Tong University, School of Medicine, Rui Jin Hospital, Shanghai, China
| | - Lei Yi
- Department of Orthopaedic Surgery, Fudan University, School of Medicine, Zhongshan Hospital, Shanghai, China
| | - Yi Dou
- Department of Burn and Plastic Surgery, Shanghai Jiao Tong University, School of Medicine, Rui Jin Hospital, Shanghai, China
| | - Jingning Huan
- Department of Burn and Plastic Surgery, Shanghai Jiao Tong University, School of Medicine, Rui Jin Hospital, Shanghai, China.
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15
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Loke I, Østergaard O, Heegaard NHH, Packer NH, Thaysen-Andersen M. Paucimannose-Rich N-glycosylation of Spatiotemporally Regulated Human Neutrophil Elastase Modulates Its Immune Functions. Mol Cell Proteomics 2017; 16:1507-1527. [PMID: 28630087 PMCID: PMC5546201 DOI: 10.1074/mcp.m116.066746] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 06/04/2017] [Indexed: 12/22/2022] Open
Abstract
Human neutrophil elastase (HNE) is an important N-glycosylated serine protease in the innate immune system, but the structure and immune-modulating functions of HNE N-glycosylation remain undescribed. Herein, LC-MS/MS-based glycan, glycopeptide and glycoprotein profiling were utilized to first determine the heterogeneous N-glycosylation of HNE purified from neutrophil lysates and then from isolated neutrophil granules of healthy individuals. The spatiotemporal expression of HNE during neutrophil activation and the biological importance of its N-glycosylation were also investigated using immunoblotting, cell surface capture, native MS, receptor interaction, protease inhibition, and bacteria growth assays. Site-specific HNE glycoprofiling demonstrated that unusual paucimannosidic N-glycans, particularly Manα1,6Manβ1,4GlcNAcβ1,4(Fucα1,6)GlcNAcβ, predominantly occupied Asn124 and Asn173. The equally unusual core fucosylated monoantenna complex-type N-sialoglycans also decorated these two fully occupied sites. In contrast, the mostly unoccupied Asn88 carried nonfucosylated paucimannosidic N-glycans probably resulting from low glycosylation site solvent accessibility. Asn185 was not glycosylated. Subcellular- and site-specific glycoprofiling showed highly uniform N-glycosylation of HNE residing in distinct neutrophil compartments. Stimulation-induced cell surface mobilization demonstrated a spatiotemporal regulation, but not cell surface-specific glycosylation signatures, of HNE in activated human neutrophils. The three glycosylation sites of HNE were located distal to the active site indicating glycan functions other than interference with HNE enzyme activity. Functionally, the paucimannosidic HNE glycoforms displayed preferential binding to human mannose binding lectin compared with the HNE sialoglycoforms, suggesting a glycoform-dependent involvement of HNE in complement activation. The heavily N-glycosylated HNE protease inhibitor, α1-antitrypsin, displayed concentration-dependent complex formation and preferred glycoform-glycoform interactions with HNE. Finally, both enzymatically active HNE and isolated HNE N-glycans demonstrated low micromolar concentration-dependent growth inhibition of clinically-relevant Pseudomonas aeruginosa, suggesting some bacteriostatic activity is conferred by the HNE N-glycans. Taken together, these observations support that the unusual HNE N-glycosylation, here reported for the first time, is involved in modulating multiple immune functions central to inflammation and infection.
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Affiliation(s)
- Ian Loke
- From the ‡Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Ole Østergaard
- §Department of Autoimmunology and Biomarkers, Statens Serum Institut, DK-2300 Copenhagen, Denmark
| | - Niels H H Heegaard
- §Department of Autoimmunology and Biomarkers, Statens Serum Institut, DK-2300 Copenhagen, Denmark
| | - Nicolle H Packer
- From the ‡Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Morten Thaysen-Andersen
- From the ‡Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia;
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16
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Abstract
Granules are essential for the ability of neutrophils to fulfill their role in innate immunity. Granule membranes contain proteins that react to environmental cues directing neutrophils to sites of infection and initiate generation of bactericidal oxygen species. Granules are densely packed with proteins that contribute to microbial killing when liberated to the phagosome or extracellularly. Granules are, however, highly heterogeneous and are traditionally subdivided into azurophil granules, specific granules, and gelatinase granules in addition to secretory vesicles. This review will address issues pertinent to formation of granules, which is a process intimately connected to maturation of neutrophils from their precursors in the bone marrow. We further discuss possible mechanisms by which decisions are made regarding sorting of proteins to constitutive secretion or storage in granules and how degranulation of granule subsets is regulated.
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Affiliation(s)
- Jack B Cowland
- The Granulocyte Research Laboratory, Department of Hematology, National University Hospital, Copenhagen, Denmark
| | - Niels Borregaard
- The Granulocyte Research Laboratory, Department of Hematology, National University Hospital, Copenhagen, Denmark.,The University of Copenhagen, Copenhagen, Denmark
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17
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18
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Galindo-Albarrán A, López-Portales O, Gutiérrez-Reyna D, Rodríguez-Jorge O, Sánchez-Villanueva J, Ramírez-Pliego O, Bergon A, Loriod B, Holota H, Imbert J, Hernández-Mendoza A, Ferrier P, Carrillo-de Santa Pau E, Valencia A, Spicuglia S, Santana M. CD8 + T Cells from Human Neonates Are Biased toward an Innate Immune Response. Cell Rep 2016; 17:2151-2160. [DOI: 10.1016/j.celrep.2016.10.056] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 07/03/2016] [Accepted: 09/22/2016] [Indexed: 12/11/2022] Open
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19
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Alard JE, Ortega-Gomez A, Wichapong K, Bongiovanni D, Horckmans M, Megens RTA, Leoni G, Ferraro B, Rossaint J, Paulin N, Ng J, Ippel H, Suylen D, Hinkel R, Blanchet X, Gaillard F, D'Amico M, von Hundelshausen P, Zarbock A, Scheiermann C, Hackeng TM, Steffens S, Kupatt C, Nicolaes GAF, Weber C, Soehnlein O. Recruitment of classical monocytes can be inhibited by disturbing heteromers of neutrophil HNP1 and platelet CCL5. Sci Transl Med 2016; 7:317ra196. [PMID: 26659570 DOI: 10.1126/scitranslmed.aad5330] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In acute and chronic inflammation, neutrophils and platelets, both of which promote monocyte recruitment, are often activated simultaneously. We investigated how secretory products of neutrophils and platelets synergize to enhance the recruitment of monocytes. We found that neutrophil-borne human neutrophil peptide 1 (HNP1, α-defensin) and platelet-derived CCL5 form heteromers. These heteromers stimulate monocyte adhesion through CCR5 ligation. We further determined structural features of HNP1-CCL5 heteromers and designed a stable peptide that could disturb proinflammatory HNP1-CCL5 interactions. This peptide attenuated monocyte and macrophage recruitment in a mouse model of myocardial infarction. These results establish the in vivo relevance of heteromers formed between proteins released from neutrophils and platelets and show the potential of targeting heteromer formation to resolve acute or chronic inflammation.
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Affiliation(s)
- Jean-Eric Alard
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany
| | - Almudena Ortega-Gomez
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany
| | - Kanin Wichapong
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, University Maastricht, 6200 Maastricht, Netherlands
| | - Dario Bongiovanni
- Medizinische Klinik I, Technische Universität München, 81675 Munich, Germany
| | - Michael Horckmans
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany
| | - Remco T A Megens
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany. Department of Biochemistry, Cardiovascular Research Institute Maastricht, University Maastricht, 6200 Maastricht, Netherlands
| | - Giovanna Leoni
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany
| | - Bartolo Ferraro
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany. Department of Experimental Medicine, University of Naples, 80138 Naples, Italy
| | - Jan Rossaint
- Department of Anesthesiology, University of Münster, 48149 Münster, Germany
| | - Nicole Paulin
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany
| | - Judy Ng
- Medizinische Klinik I, Technische Universität München, 81675 Munich, Germany
| | - Hans Ippel
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, University Maastricht, 6200 Maastricht, Netherlands
| | - Dennis Suylen
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, University Maastricht, 6200 Maastricht, Netherlands
| | - Rabea Hinkel
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany. Medizinische Klinik I, Technische Universität München, 81675 Munich, Germany. German Centre for Cardiovascular Research, partner site Munich Heart Alliance, 80336 Munich, Germany
| | - Xavier Blanchet
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany
| | - Fanny Gaillard
- Roscoff Biological Station, Pierre et Marie Curie University, 29682 Paris, France
| | - Michele D'Amico
- Department of Experimental Medicine, University of Naples, 80138 Naples, Italy
| | | | - Alexander Zarbock
- Department of Anesthesiology, University of Münster, 48149 Münster, Germany
| | - Christoph Scheiermann
- Walter-Brendel-Center of Experimental Medicine, Ludwig Maximilians University Munich, 81377 Munich, Germany
| | - Tilman M Hackeng
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, University Maastricht, 6200 Maastricht, Netherlands
| | - Sabine Steffens
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany. German Centre for Cardiovascular Research, partner site Munich Heart Alliance, 80336 Munich, Germany
| | - Christian Kupatt
- Medizinische Klinik I, Technische Universität München, 81675 Munich, Germany. German Centre for Cardiovascular Research, partner site Munich Heart Alliance, 80336 Munich, Germany
| | - Gerry A F Nicolaes
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, University Maastricht, 6200 Maastricht, Netherlands
| | - Christian Weber
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany. Department of Biochemistry, Cardiovascular Research Institute Maastricht, University Maastricht, 6200 Maastricht, Netherlands. German Centre for Cardiovascular Research, partner site Munich Heart Alliance, 80336 Munich, Germany
| | - Oliver Soehnlein
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, 80336 Munich, Germany. German Centre for Cardiovascular Research, partner site Munich Heart Alliance, 80336 Munich, Germany. Department of Pathology, Academic Medical Center, 1105 Amsterdam, Netherlands.
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20
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c-Myb acts in parallel and cooperatively with Cebp1 to regulate neutrophil maturation in zebrafish. Blood 2016; 128:415-26. [DOI: 10.1182/blood-2015-12-686147] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Accepted: 05/22/2016] [Indexed: 12/14/2022] Open
Abstract
Key Points
c-Myb is essential for neutrophil terminal differentiation by targeting granule gene expression. c-Myb and Cebp1 act cooperatively to regulate neutrophil maturation in zebrafish.
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21
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Gaillard C, Tokuyasu TA, Rosen G, Sotzen J, Vitaliano-Prunier A, Roy R, Passegué E, de Thé H, Figueroa ME, Kogan SC. Transcription and methylation analyses of preleukemic promyelocytes indicate a dual role for PML/RARA in leukemia initiation. Haematologica 2015; 100:1064-75. [PMID: 26088929 DOI: 10.3324/haematol.2014.123018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 05/06/2015] [Indexed: 12/15/2022] Open
Abstract
Acute promyelocytic leukemia is an aggressive malignancy characterized by the accumulation of promyelocytes in the bone marrow. PML/RARA is the primary abnormality implicated in this pathology, but the mechanisms by which this chimeric fusion protein initiates disease are incompletely understood. Identifying PML/RARA targets in vivo is critical for comprehending the road to pathogenesis. Utilizing a novel sorting strategy, we isolated highly purified promyelocyte populations from normal and young preleukemic animals, carried out microarray and methylation profiling analyses, and compared the results from the two groups of animals. Surprisingly, in the absence of secondary lesions, PML/RARA had an overall limited impact on both the transcriptome and methylome. Of interest, we did identify down-regulation of secondary and tertiary granule genes as the first step engaging the myeloid maturation block. Although initially not sufficient to arrest terminal granulopoiesis in vivo, such alterations set the stage for the later, complete differentiation block seen in leukemia. Further, gene set enrichment analysis revealed that PML/RARA promyelocytes exhibit a subtle increase in expression of cell cycle genes, and we show that this leads to both increased proliferation of these cells and expansion of the promyelocyte compartment. Importantly, this proliferation signature was absent from the poorly leukemogenic p50/RARA fusion model, implying a critical role for PML in the altered cell-cycle kinetics and ability to initiate leukemia. Thus, our findings challenge the predominant model in the field and we propose that PML/RARA initiates leukemia by subtly shifting cell fate decisions within the promyelocyte compartment.
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Affiliation(s)
- Coline Gaillard
- Department of Laboratory Medicine, University of California, San Francisco, CA, USA Institut Universitaire d'Hématologie, Université Paris-Diderot UMR 944/7212, France
| | - Taku A Tokuyasu
- Computational Biology Core, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Galit Rosen
- Center for Cancer and Blood Disorders, Phoenix Children's Hospital, AZ, USA
| | - Jason Sotzen
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
| | | | - Ritu Roy
- Computational Biology Core, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Emmanuelle Passegué
- Department of Medicine, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, USA
| | - Hugues de Thé
- Institut Universitaire d'Hématologie, Université Paris-Diderot UMR 944/7212, France
| | - Maria E Figueroa
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
| | - Scott C Kogan
- Department of Laboratory Medicine, University of California, San Francisco, CA, USA
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22
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Wada T, Akagi T, Muraoka M, Toma T, Kaji K, Agematsu K, Koeffler HP, Yokota T, Yachie A. A Novel In-Frame Deletion in the Leucine Zipper Domain of C/EBPε Leads to Neutrophil-Specific Granule Deficiency. THE JOURNAL OF IMMUNOLOGY 2015; 195:80-6. [PMID: 26019275 DOI: 10.4049/jimmunol.1402222] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 05/04/2015] [Indexed: 11/19/2022]
Abstract
Neutrophil-specific granule deficiency (SGD) is a rare autosomal recessive primary immunodeficiency characterized by neutrophil dysfunction, bilobed neutrophil nuclei and lack of neutrophil-specific granules. Defects in a myeloid-specific transcription factor, CCAAT/enhancer binding protein-ε (C/EBPε), have been identified in two cases in which homozygous frameshift mutations led to loss of the leucine zipper domain. In this study, we report a 55-y-old woman affected with SGD caused by a novel homozygous 2-aa deletion (ΔRS) in the leucine zipper domain of the C/EBPε gene. The patient showed characteristic neutrophil abnormalities and recurrent skin infections; however, there was no history of deep organ infections. Biochemical analysis revealed that, in contrast to the two frameshift mutations, the ΔRS mutant maintained normal cellular localization, DNA-binding activity, and dimerization, and all three mutants exhibited marked reduction in transcriptional activity. The ΔRS mutant was defective in its association with Gata1 and PU.1, as well as aberrant cooperative transcriptional activation of eosinophil major basic protein. Thus, the ΔRS likely impairs protein-protein interaction with other transcription factors, resulting in a loss of transcriptional activation. These results further support the importance of the leucine zipper domain of C/EBPε for its essential function, and indicate that multiple molecular mechanisms lead to SGD.
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Affiliation(s)
- Taizo Wada
- Department of Pediatrics, Institute of Medical, Pharmaceutical and Health Sciences, School of Medicine, Kanazawa University, Kanazawa 920-8641, Japan;
| | - Tadayuki Akagi
- Department of Stem Cell Biology, Institute of Medical, Pharmaceutical and Health Sciences, School of Medicine, Kanazawa University, Kanazawa 920-8640, Japan
| | - Masahiro Muraoka
- Department of Pediatrics, Institute of Medical, Pharmaceutical and Health Sciences, School of Medicine, Kanazawa University, Kanazawa 920-8641, Japan
| | - Tomoko Toma
- Department of Pediatrics, Institute of Medical, Pharmaceutical and Health Sciences, School of Medicine, Kanazawa University, Kanazawa 920-8641, Japan
| | - Kenzo Kaji
- Department of Dermatology, Komatsu Municipal Hospital, Komatsu 923-0961, Japan
| | - Kazunaga Agematsu
- Department of Infection and Host Defense, Shinshu University Graduate School of Medicine, Matsumoto 390-8621, Japan
| | - H Phillip Koeffler
- Division of Hematology and Oncology, Cedars-Sinai Medical Center, University of California Los Angeles School of Medicine, Los Angeles, CA 90048; and Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore
| | - Takashi Yokota
- Department of Stem Cell Biology, Institute of Medical, Pharmaceutical and Health Sciences, School of Medicine, Kanazawa University, Kanazawa 920-8640, Japan
| | - Akihiro Yachie
- Department of Pediatrics, Institute of Medical, Pharmaceutical and Health Sciences, School of Medicine, Kanazawa University, Kanazawa 920-8641, Japan
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23
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Abstract
This review addresses current thinking on the diagnosis, causation and management of common and rare primary disorders of granulocytes. The genetic basis of many of these disorders is now understood. Increased awareness is necessary to ensure that these disorders are identified promptly and treated appropriately.
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Affiliation(s)
- G P Spickett
- Regional Department of Immunology, Royal Victoria Infirmary, Newcastle upon Tyne NE1 4LP, UK.
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24
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The end of the line for neutrophils. Blood 2015; 125:1688-90. [PMID: 25766564 DOI: 10.1182/blood-2015-01-622209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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25
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Abstract
Primary disorders of neutrophil function result from impairment in neutrophil responses that are critical for host defense. This chapter summarizes inherited disorders of neutrophils that cause defects in neutrophil adhesion, migration, and oxidative killing. These include the leukocyte adhesion deficiencies, actin defects, and other disorders of chemotaxis, hyperimmunoglobulin E syndrome, Chédiak-Higashi syndrome, neutrophil-specific granule deficiency, chronic granulomatous disease, and myeloperoxidase deficiency. Diagnostic tests and treatment approaches are also summarized for each neutrophil disorder.
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Affiliation(s)
- Mary C Dinauer
- Departments of Pediatrics (Hematology/Oncology) and Pathology & Immunology, Washington University School of Medicine, St. Louis Children's Hospital, St. Louis, MO, USA
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26
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Yang J, Ikezoe T, Nishioka C, Yokoyama A. Over-expression of Mcl-1 impairs the ability of ATRA to induce growth arrest and differentiation in acute promyelocytic leukemia cells. Apoptosis 2013; 18:1403-1415. [DOI: 10.1007/s10495-013-0872-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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27
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Uzel G, Holland SM. Phagocyte deficiencies. Clin Immunol 2013. [DOI: 10.1016/b978-0-7234-3691-1.00042-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Alberich-Jordà M, Wouters B, Balastik M, Shapiro-Koss C, Zhang H, Di Ruscio A, DiRuscio A, Radomska HS, Ebralidze AK, Amabile G, Ye M, Zhang J, Lowers I, Avellino R, Melnick A, Figueroa ME, Valk PJM, Delwel R, Tenen DG. C/EBPγ deregulation results in differentiation arrest in acute myeloid leukemia. J Clin Invest 2012; 122:4490-504. [PMID: 23160200 DOI: 10.1172/jci65102] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 09/20/2012] [Indexed: 11/17/2022] Open
Abstract
C/EBPs are a family of transcription factors that regulate growth control and differentiation of various tissues. We found that C/EBPγ is highly upregulated in a subset of acute myeloid leukemia (AML) samples characterized by C/EBPα hypermethylation/silencing. Similarly, C/EBPγ was upregulated in murine hematopoietic stem/progenitor cells lacking C/EBPα, as C/EBPα mediates C/EBPγ suppression. Studies in myeloid cells demonstrated that CEBPG overexpression blocked neutrophilic differentiation. Further, downregulation of Cebpg in murine Cebpa-deficient stem/progenitor cells or in human CEBPA-silenced AML samples restored granulocytic differentiation. In addition, treatment of these leukemias with demethylating agents restored the C/EBPα-C/EBPγ balance and upregulated the expression of myeloid differentiation markers. Our results indicate that C/EBPγ mediates the myeloid differentiation arrest induced by C/EBPα deficiency and that targeting the C/EBPα-C/EBPγ axis rescues neutrophilic differentiation in this unique subset of AMLs.
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29
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Dixon BM, Barker T, McKinnon T, Cuomo J, Frei B, Borregaard N, Gombart AF. Positive correlation between circulating cathelicidin antimicrobial peptide (hCAP18/LL-37) and 25-hydroxyvitamin D levels in healthy adults. BMC Res Notes 2012; 5:575. [PMID: 23095332 PMCID: PMC3532295 DOI: 10.1186/1756-0500-5-575] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Accepted: 10/19/2012] [Indexed: 01/20/2023] Open
Abstract
Background Transcription of the cathelicidin antimicrobial peptide (CAMP) gene is induced by binding of the bioactive form of vitamin D, 1,25-dihydroxyvitamin D, to the vitamin D receptor. Significant levels of the protein hCAP18/LL-37 are found in the blood and may protect against infection and/or sepsis. We hypothesized that serum vitamin D levels may modulate the circulating levels of hCAP18. Only three studies have shown a positive correlation between circulating 25-hydroxyvitamin D and hCAP18 levels. Here we provide additional evidence for such a correlation in healthy, middle-aged adults. Findings Serum levels of 25-hydroxyvitamin D [25(OH)D] and plasma levels of hCAP18 were determined in 19 healthy middle-aged (mean of 50.1 years) adult men and women. Plasma hCAP18 concentrations correlated with serum 25(OH)D concentrations in subjects with 25(OH)D levels ≤ 32 ng/ml (r = 0.81, p < 0.005) but not in subjects with concentrations > 32 ng/ml (r = 0.19, p = 0.63). Conclusions We conclude that plasma hCAP18 levels correlate with serum 25(OH)D levels in subjects with concentrations of 25(OH)D ≤ 32 ng/ml as opposed to those with concentrations > 32 ng/ml and that vitamin D status may regulate systemic levels of hCAP18/LL-37.
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Affiliation(s)
- Brian M Dixon
- USANA Health Sciences, Inc, 3838 West Parkway Boulevard, Salt Lake City UT 84120, USA
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30
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Abstract
Because of their rare detection in atherosclerotic lesions, the involvement of neutrophils in the pathophysiology of atherosclerosis has been largely denied. However, over the past couple of years, studies have provided convincing evidence for the presence of neutrophils in atherosclerotic plaques and further revealed the causal contribution of neutrophils during various stages of atherosclerosis. This review describes mechanisms underlying hyperlipidemia-mediated neutrophilia and how neutrophils may enter atherosclerotic lesions. It also highlights possible mechanisms of neutrophil-driven atherogenesis and plaque destabilization. Knowledge of the contribution of neutrophils to atherosclerosis will allow for exploration of new avenues in the treatment of atherogenesis and atherothrombosis.
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Affiliation(s)
- Oliver Soehnlein
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-University, Munich, Germany.
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31
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Staphylococcus aureus: an introduction. Semin Immunopathol 2012; 34:181-4. [PMID: 22282052 DOI: 10.1007/s00281-011-0301-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Accepted: 12/13/2011] [Indexed: 01/13/2023]
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32
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Targeting the host–pathogen interface for treatment of Staphylococcus aureus infection. Semin Immunopathol 2011; 34:299-315. [DOI: 10.1007/s00281-011-0297-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Accepted: 10/17/2011] [Indexed: 12/15/2022]
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33
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Pierini V, Nofrini V, La Starza R, Barba G, Vitale A, Di Raimondo F, Matteucci C, Crescenzi B, Elia L, Gorello P, Storlazzi CT, Mecucci C. Double CEBPE-IGH rearrangement due to chromosome duplication and cryptic insertion in an adult with B-cell acute lymphoblastic leukemia. Cancer Genet 2011; 204:563-8. [DOI: 10.1016/j.cancergen.2011.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 10/10/2011] [Accepted: 10/12/2011] [Indexed: 01/13/2023]
Affiliation(s)
- Valentina Pierini
- Hematology and Bone Marrow Transplantation Unit, University of Perugia, Perugia, Italy
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34
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Mercer EM, Lin YC, Murre C. Factors and networks that underpin early hematopoiesis. Semin Immunol 2011; 23:317-25. [PMID: 21930392 DOI: 10.1016/j.smim.2011.08.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2010] [Accepted: 08/19/2011] [Indexed: 01/08/2023]
Abstract
Multiple trajectories have recently been described through which hematopoietic progenitor cells travel prior to becoming lineage-committed effectors. A wide spectrum of transcription factors has recently been identified that modulate developmental progression along such trajectories. Here we describe how distinct families of transcription factors act and are linked together to orchestrate early hematopoiesis.
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Affiliation(s)
- Elinore M Mercer
- Department of Molecular Biology, University of California, San Diego, La Jolla, CA 92093, United States.
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35
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Bouma G, Ancliff PJ, Thrasher AJ, Burns SO. Recent advances in the understanding of genetic defects of neutrophil number and function. Br J Haematol 2010; 151:312-26. [DOI: 10.1111/j.1365-2141.2010.08361.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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36
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Soehnlein O, Lindbom L. Phagocyte partnership during the onset and resolution of inflammation. Nat Rev Immunol 2010; 10:427-39. [PMID: 20498669 DOI: 10.1038/nri2779] [Citation(s) in RCA: 746] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Neutrophils, monocytes and macrophages are closely related phagocytic cells that cooperate during the onset, progression and resolution of inflammation. This Review highlights the mechanisms involved in the intimate partnership of phagocytes during each progressive phase of the inflammatory response. We describe how tissue-resident macrophages recognize tissue damage to promote the recruitment of neutrophils and the mechanisms by which infiltrating neutrophils can then promote monocyte recruitment. Furthermore, we discuss the phagocyte-derived signals that abrogate neutrophil recruitment and how the uptake of apoptotic neutrophils by macrophages leads to termination of the inflammatory response. Finally, we highlight the potential therapeutic relevance of these interactions.
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Affiliation(s)
- Oliver Soehnlein
- Department of Physiology and Pharmacology, Karolinska Institutet, S-171 77 Stockholm, Sweden.
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37
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Gombart AF. The vitamin D-antimicrobial peptide pathway and its role in protection against infection. Future Microbiol 2010; 4:1151-65. [PMID: 19895218 DOI: 10.2217/fmb.09.87] [Citation(s) in RCA: 270] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Vitamin D deficiency has been correlated with increased rates of infection. Since the early 19th century, both environmental (i.e., sunlight) and dietary sources (cod liver) of vitamin D have been identified as treatments for TB. The recent discovery that vitamin D induces antimicrobial peptide gene expression explains, in part, the 'antibiotic' effect of vitamin D and has greatly renewed interest in the ability of vitamin D to improve immune function. Subsequent work indicates that this regulation is biologically important for the response of the innate immune system to wounds and infection and that deficiency may lead to suboptimal responses toward bacterial and viral infections. The regulation of the cathelicidin antimicrobial peptide gene is a human/primate-specific adaptation and is not conserved in other mammals. The capacity of the vitamin D receptor to act as a high-affinity receptor for vitamin D and a low-affinity receptor for secondary bile acids and potentially other novel nutritional compounds suggests that the evolutionary selection to place the cathelicidin gene under control of the vitamin D receptor allows for its regulation under both endocrine and xenobiotic response systems. Future studies in both humans and humanized mouse models will elucidate the importance of this regulation and lead to the development of potential therapeutic applications.
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Affiliation(s)
- Adrian F Gombart
- Linus Pauling Institute, Department of Biochemisty & Biophysics, Oregon State University, Corvallis, 97331-7305, USA.
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38
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Holland SM, Rosenzweig SD, Schumacher RF, Notarangelo L. Immunodeficiencies. Infect Dis (Lond) 2010. [DOI: 10.1016/b978-0-323-04579-7.00072-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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39
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Halene S, Gaines P, Sun H, Zibello T, Lin S, Khanna-Gupta A, Williams SC, Perkins A, Krause D, Berliner N. C/EBPepsilon directs granulocytic-vs-monocytic lineage determination and confers chemotactic function via Hlx. Exp Hematol 2009; 38:90-103. [PMID: 19925846 DOI: 10.1016/j.exphem.2009.11.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2009] [Revised: 11/11/2009] [Accepted: 11/12/2009] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Mutations in the CCAAT enhancer binding protein epsilon (C/EBPepsilon) gene have been identified in the cells of patients with neutrophil specific granule deficiency, a rare congenital disorder marked by recurrent bacterial infections. Their neutrophils, in addition to lacking specific granules required for normal respiratory burst activity, also lack normal phagocytosis and chemotaxis. Although the specific granule deficiency phenotype has been replicated in C/EBPepsilon(-/-) (knockout [KO]) mice, the mechanisms by which C/EBPepsilon mutations act to decrease neutrophil function are not entirely clear. MATERIALS AND METHODS In order to determine the role of C/EBPepsilon in neutrophil differentiation and migration, we generated immortalized progenitor cell lines from C/EBPepsilon KO and wild-type mice and performed expression and flow cytometric analysis and functional studies. RESULTS Expression of lineage-specific cell surface antigens on our in vitro differentiated cell lines revealed persistent expression of monocytic markers on KO granulocytes. We verified this in primary murine peripheral blood and bone marrow cells. In addition, KO bone marrow had an increase in immature myeloid precursors at the common myeloid progenitor and granulocyte/monocyte progenitor levels, suggesting a critical role for C/EBPepsilon not only in granulocyte maturation beyond the promyelocyte stage, but also in the monocyte/granulocyte lineage decision. We found that restoration of Hlx (H2.0-like homeo box 1) expression, which was decreased in C/EBPepsilon KO cells, rescued chemotaxis, but not the other defects of C/EBPepsilon KO neutrophils. CONCLUSIONS We show two new regulatory functions of C/EBPepsilon in myelopoiesis: in the absence of C/EBPepsilon, there is not only incomplete differentiation of granulocytes, but myelopoiesis is disrupted with the appearance of an intermediate cell type with monocyte and granulocyte features, and the neutrophils have abnormal chemotaxis. Restoration of expression of Hlx provides partial recovery of function; it has no effect on neutrophil maturation, but can completely ameliorate the chemotaxis defect in C/EBPepsilon KO cells.
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Affiliation(s)
- Stephanie Halene
- Section of Hematology, Department of Internal Medicine and Yale Cancer Center, Yale University School of Medicine, New Haven, CT 06520-8073, USA.
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40
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Nishioka C, Ikezoe T, Yang J, Gery S, Koeffler HP, Yokoyama A. Inhibition of mammalian target of rapamycin signaling potentiates the effects of all-trans retinoic acid to induce growth arrest and differentiation of human acute myelogenous leukemia cells. Int J Cancer 2009; 125:1710-20. [PMID: 19507250 DOI: 10.1002/ijc.24472] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Our study explored the drug interaction of all-trans retinoic acid (ATRA) and RAD001 (everolimus), the inhibitor of mammalian target of rapamycin complex 1 (mTORC1), in acute myelogenous leukemia (AML) NB4 and HL60 cells. RAD001 (10 nM) significantly enhanced the ATRA-induced growth arrest and differentiation of these cells, as measured by colony-forming assay and cell cycle analysis, and expression of CD11b cell surface antigen and nitroblue tetrazolium reduction, respectively. ATRA (0.1-1 microM) upregulated levels of RTP801, a negative regulator of mTORC1, and inhibited mTORC1 signaling as assessed by measurement of the levels of p-p70S6K and p-4E-BP1 in HL60 and NB4 cells. ATRA (0.1-1 microM) in combination with RAD001 (10 nM) strikingly downregulated the levels of p-70S6K and p-4E-BP1 without affecting the total amount of these proteins. Notably, RAD001 (10 nM) significantly augmented ATRA-induced expression of CCAAT/enhancer-binding protein epsilon (C/EBPepsilon) and p27(kip1) and downregulated levels of c-Myc in these cells. Furthermore, RAD001 (5 mg/kg) enhanced the ability of ATRA (10 mg/kg) to inhibit the proliferation of HL60 cells growing as tumor xenografts in immune-deficient nude mice. Taken together, concomitant blockade of the RA and mTORC1 signaling may be a promising treatment strategy for individuals with AML.
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Affiliation(s)
- Chie Nishioka
- Department of Hematology and Respiratory Medicine, Kochi Medical School, Kochi University, Nankoku, Kochi, Japan
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41
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Soehnlein O, Weber C, Lindbom L. Neutrophil granule proteins tune monocytic cell function. Trends Immunol 2009; 30:538-46. [PMID: 19699683 DOI: 10.1016/j.it.2009.06.006] [Citation(s) in RCA: 126] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2009] [Revised: 06/26/2009] [Accepted: 06/26/2009] [Indexed: 12/18/2022]
Abstract
Polymorphonuclear leukocytes (PMNs) release the contents of granules during their migration to inflammatory sites. On liberation from the first leukocyte to enter injured tissue, the granule proteins play a central role in the early inflammatory response. In particular, mononuclear phagocytes interact intimately with PMNs and their secretion products. PMN granule proteins enhance the adhesion of monocytes to the endothelium and stimulate subsequent extravasation of inflammatory monocytes. At the site of inflammation, PMN granule proteins activate macrophages to produce and release cytokines and to phagocytose IgG-opsonized bacteria. Furthermore, by direct cell-cell contacts, PMNs activate monocyte-derived dendritic cells, thereby enhancing antigen presentation. Efforts in this field might lead to the development of drugs for specific modulation of innate immune functions.
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Affiliation(s)
- Oliver Soehnlein
- Institute of Molecular Cardiovascular Research, University Hospital, RWTH Aachen University, Aachen, Germany.
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42
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Abstract
Extravasation of polymorphonuclear leukocytes (PMNs) to the site of inflammation precedes a second wave of emigrating monocytes. That these events are causally connected has been established a long time ago. However, we are now just beginning to understand the molecular mechanisms underlying this cellular switch, which has become even more complex considering the emergence of monocyte subsets, which are affected differently by signals generated from PMNs. PMN granule proteins induce adhesion as well as emigration of inflammatory monocytes to the site of inflammation involving beta(2)-integrins and formyl-peptide receptors. Furthermore, modification of the chemokine network by PMNs and their granule proteins creates a milieu favoring extravasation of inflammatory monocytes. Finally, emigrated PMNs rapidly undergo apoptosis, leading to the discharge of lysophosphatidylcholine, which attracts monocytes via G2A receptors. The net effect of these mechanisms is the accumulation of inflammatory monocytes, thus promoting proinflammatory events, such as release of inflammation-sustaining cytokines and reactive oxygen species. As targeting PMNs without causing serious side effects seems futile, it may be more promising to aim at interfering with subsequent PMN-driven proinflammatory events.
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43
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Soehnlein O. Direct and alternative antimicrobial mechanisms of neutrophil-derived granule proteins. J Mol Med (Berl) 2009; 87:1157-64. [PMID: 19641860 DOI: 10.1007/s00109-009-0508-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2009] [Revised: 07/15/2009] [Accepted: 07/15/2009] [Indexed: 01/13/2023]
Abstract
Polymorphonuclear leukocytes (PMN) contribute to bacterial clearance by uptake and intracellular killing of microbes. However, antimicrobial polypeptides are released extracellularly where they are enweaved in a chromatin web that traps and eliminates bacteria. In addition, PMN-derived antimicrobial polypeptides direct monocytes and macrophages to the site of infection and activate their antimicrobial armor. Increased expression of Fcgamma receptors as well as opsonization of bacteria by PMN granule proteins support bacterial uptake by macrophages. PMN granule proteins also increase intracellular reactive oxygen species formation in macrophages. Finally, apoptotic PMN transfer parts of their antimicrobial peptides to macrophages, hence increasing killing of intracellular bacteria. Understanding mechanisms by which PMN granule proteins stimulate antimicrobial mechanisms in macrophages may open novel strategies in fighting bacterial infections.
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Affiliation(s)
- Oliver Soehnlein
- Institute of Molecular Cardiovascular Research (IMCAR), University Hospital, RWTH Aachen University, Aachen, Germany.
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44
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Anaplasma phagocytophilum increases cathepsin L activity, thereby globally influencing neutrophil function. Infect Immun 2008; 76:4905-12. [PMID: 18765732 DOI: 10.1128/iai.00851-08] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Anaplasma phagocytophilum, the agent of human granulocytic anaplasmosis, is an unusual obligate intracellular pathogen that persists in neutrophils. A. phagocytophilum increases the binding of a repressor, CCAAT displacement protein (CDP), to the gp91(phox) promoter, thereby diminishing the host oxidative burst. We now show that A. phagocytophilum infection also enhances the binding of CDP to the promoters of human neutrophil peptide 1 and C/EBPepsilon--molecules important for neutrophil defense and maturation--suggesting that this is a general strategy used by this pathogen to alter polymorphonuclear leukocyte function. To explore the mechanism by which A. phagocytophilum increases CDP activity, we assessed the effects of this microbe on cathepsin L, a protease that cleaves CDP into a form with increased DNA binding ability. A. phagocytophilum infection resulted in elevated cathepsin L activity and the proteolysis of CDP. Blocking the action of cathepsin L with a chemical inhibitor or small interfering RNA targeting of this molecule caused a marked reduction in the degree of A. phagocytophilum infection. These data demonstrate that increasing cathepsin L activity is a strategy used by A. phagocytophilum to alter CDP activity and thereby globally influence neutrophil function. As therapeutic options for A. phagocytophilum and related organisms are limited, these results also identify a cellular pathway that may be targeted for the treatment of A. phagocytophilum infection.
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45
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Abstract
The leukocyte response in inflammation is characterized by an initial recruitment of polymorphonuclear leukocytes (PMN) preceding a second wave of monocytes to the site of injury or infection. In the mouse, 2 populations of monocytes have been identified, Gr1(-)CCR2(-)CX3CR1(hi) resident monocytes and Gr1(+)CCR2(+)CX3CR1(lo) inflammatory monocytes. Here, intravital microscopy of the musculus cremaster and a subcutaneous air pouch model were used to investigate a possible link between PMN extravasation and the subsequent emigration of inflammatory monocytes in response to local stimulation with PAF. In mice that were made neutropenic by injection of a PMN-depleting antibody, the extravasation of inflammatory monocytes, but not resident monocytes, was markedly reduced compared with mice with intact white blood cell count but was restored by local treatment with secretion of activated PMN. Components of the PMN secretion were found to directly activate inflammatory monocytes and further examination revealed PMN-derived LL-37 and heparin-binding protein (HBP/CAP37/azurocidin) as primary mediators of the recruitment of inflammatory monocytes via activation of formyl-peptide receptors. These data show that LL-37 and HBP specifically stimulate mobilization of inflammatory monocytes. This cellular cross-talk functionally results in enhanced cytokine levels and increased bacterial clearance, thus boosting the early immune response.
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46
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Beertsen W, Willenborg M, Everts V, Zirogianni A, Podschun R, Schröder B, Eskelinen EL, Saftig P. Impaired phagosomal maturation in neutrophils leads to periodontitis in lysosomal-associated membrane protein-2 knockout mice. THE JOURNAL OF IMMUNOLOGY 2008; 180:475-82. [PMID: 18097049 DOI: 10.4049/jimmunol.180.1.475] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Inflammatory periodontal diseases constitute one of the most common infections in humans, resulting in the destruction of the supporting structures of the dentition. Circulating neutrophils are an essential component of the human innate immune system. We observed that mice deficient for the major lysosomal-associated membrane protein-2 (LAMP-2) developed severe periodontitis early in life. This development was accompanied by a massive accumulation of bacterial plaque along the tooth surfaces, gingival inflammation, alveolar bone resorption, loss of connective tissue fiber attachment, apical migration of junctional epithelium, and pathological movement of the molars. The inflammatory lesions were dominated by polymorphonuclear leukocytes (PMNs) apparently being unable to efficiently clear bacterial pathogens. Systemic treatment of LAMP-2-deficient mice with antibiotics prevented the periodontal pathology. Isolated PMNs from LAMP-2-deficient mice showed an accumulation of autophagic vacuoles and a reduced bacterial killing capacity. Oxidative burst response was not altered in these cells. Latex bead and bacterial feeding experiments showed a reduced ability of the phagosomes to acquire an acidic pH and late endocytic markers, suggesting an impaired fusion of late endosomes-lysosomes with phagosomes. This study underlines the importance of LAMP-2 for the maturation of phagosomes in PMNs. It also underscores the requirement of lysosomal fusion events to provide sufficient antimicrobial activity in PMNs, which is needed to prevent periodontal disease.
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Affiliation(s)
- Wouter Beertsen
- Biochemical Institute, Christian-Albrechts-University Kiel, and Institute of Infection Medicine, University Hospital Schleswig-Holstein, Germany
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47
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Su F, Juarez MA, Cooke CL, LaPointe L, Shavit JA, Yamaoka JS, Lyons SE. Differential Regulation of Primitive Myelopoiesis in the Zebrafish by Spi-1/Pu.1 and C/ebp1. Zebrafish 2007; 4:187-99. [DOI: 10.1089/zeb.2007.0505] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Fengyun Su
- Division of Hematology–Oncology and Cellular and Molecular Biology Program, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Marianne A. Juarez
- Division of Hematology–Oncology and Cellular and Molecular Biology Program, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Christopher L. Cooke
- Division of Hematology–Oncology and Cellular and Molecular Biology Program, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Lisa LaPointe
- Division of Hematology–Oncology and Cellular and Molecular Biology Program, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Jordan A. Shavit
- HHMI and Life Sciences Institute, University of Michigan, Ann Arbor, Michigan
| | - Jennifer S. Yamaoka
- HHMI and Life Sciences Institute, University of Michigan, Ann Arbor, Michigan
| | - Susan E. Lyons
- Division of Hematology–Oncology and Cellular and Molecular Biology Program, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
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48
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Niemann CU, Abrink M, Pejler G, Fischer RL, Christensen EI, Knight SD, Borregaard N. Neutrophil elastase depends on serglycin proteoglycan for localization in granules. Blood 2007; 109:4478-86. [PMID: 17272511 DOI: 10.1182/blood-2006-02-001719] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
AbstractGranule proteins play a major role in bacterial killing by neutrophils. Serglycin proteoglycan, the major intracellular proteoglycan of hematopoietic cells, has been proposed to play a role in sorting and packing of granule proteins. We examined the content of major neutrophil granule proteins in serglycin knockout mice and found neutrophil elastase absent from mature neutrophils as shown by activity assay, Western blotting, and immunocytochemistry, whereas neutrophil elastase mRNA was present. The localization of other neutrophil granule proteins did not differ between wild-type and serglycin knockout mice. Differential counts and neutrophil ultrastructure were unaffected by the lack of serglycin, indicating that defective localization of neutrophil elastase does not induce neutropenia itself, albeit mutations in the neutrophil elastase gene can cause severe congenital neutropenia or cyclic neutropenia. The virulence of intraperitoneally injected Gram-negative bacteria (Klebsiella pneumoniae) was increased in serglycin knockout mice compared with wild-type mice, as previously reported for neutrophil elastase knockout mice. Thus, serglycin proteoglycan has an important role in localizing neutrophil elastase in azurophil granules of neutrophils, while localization of other granule proteins must be mediated by other mechanisms.
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Affiliation(s)
- Carsten U Niemann
- Rigshospitalet, Department of Hematology, Granulocyte Research Laboratory, University of Copenhagen, Copenhagen, Denmark.
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49
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Khanna-Gupta A, Sun H, Zibello T, Lee HM, Dahl R, Boxer LA, Berliner N. Growth factor independence-1 (Gfi-1) plays a role in mediating specific granule deficiency (SGD) in a patient lacking a gene-inactivating mutation in the C/EBPepsilon gene. Blood 2007; 109:4181-90. [PMID: 17244686 PMCID: PMC1885490 DOI: 10.1182/blood-2005-05-022004] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Neutrophil-specific granule deficiency (SGD) is a rare congenital disorder marked by recurrent bacterial infections. Neutrophils from SGD patients lack secondary and tertiary granules and their content proteins and lack normal neutrophil functions. Gene-inactivating mutations in the C/EBPepsilon gene have been identified in 2 SGD patients. Our studies on a third SGD patient revealed a heterozygous mutation in the C/EBPepsilon gene. However, we demonstrate elevated levels of C/EBPepsilon and PU.1 proteins in the patient's peripheral blood neutrophils. The expression of the transcription factor growth factor independence-1 (Gfi-1), however, was found to be markedly reduced in our SGD patient despite the absence of an obvious mutation in this gene. This may explain the elevated levels of both C/EBPepsilon and PU.1, which are targets of Gfi-1 transcriptional repression. We have generated a growth factor-dependent EML cell line from the bone marrow of Gfi-1(+/-) and Gfi-1(+/+) mice as a model for Gfi-1-deficient SGD, and demonstrate that lower levels of Gfi-1 expression in the Gfi-1(+/-) EML cells is associated with reduced levels of secondary granule protein (SGP) gene expression. Furthermore, we demonstrate a positive role for Gfi-1 in SGP expression, in that Gfi-1 binds to and up-regulates the promoter of neutrophil collagenase (an SGP gene), in cooperation with wild-type but not with mutant C/EBPepsilon. We hypothesize that decreased Gfi-1 levels in our SGD patient, together with the mutant C/EBPepsilon, block SGP expression, thereby contributing to the underlying etiology of the disease in our patient.
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Affiliation(s)
- Arati Khanna-Gupta
- Section of Hematology, Yale University School of Medicine, New Haven, CT 06510, USA
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50
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Abstract
Primary disorders of neutrophil function result from impairment in neutrophil responses that are critical for host defense. This chapter summarizes inherited disorders of neutrophils that cause defects in neutrophil adhesion, migration, and oxidative killing. These include leukocyte adhesion deficiencies, actin defects, and other disorders of chemotaxis; hyperimmunoglobulin E syndrome; Chédiak-Higashi syndrome; neutrophil specific granule deficiency; chronic granulomatous disease; and myeloperoxidase deficiency. Diagnostic tests and treatment approaches are also summarized for each neutrophil disorder.
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Affiliation(s)
- Mary C Dinauer
- Herman B Wells Center for Pediatric Research, Department of Pediatrics, Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, IN, USA
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