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Lulla AR, Akli S, Karakas C, Caruso JA, Warma LD, Fowlkes NW, Rao X, Wang J, Hunt KK, Watowich SS, Keyomarsi K. Neutrophil Elastase Remodels Mammary Tumors to Facilitate Lung Metastasis. Mol Cancer Ther 2024; 23:492-506. [PMID: 37796181 PMCID: PMC10987287 DOI: 10.1158/1535-7163.mct-23-0414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/28/2023] [Accepted: 09/28/2023] [Indexed: 10/06/2023]
Abstract
Metastatic disease remains the leading cause of death due to cancer, yet the mechanism(s) of metastasis and its timely detection remain to be elucidated. Neutrophil elastase (NE), a serine protease secreted by neutrophils, is a crucial mediator of chronic inflammation and tumor progression. In this study, we used the PyMT model (NE+/+ and NE-/-) of breast cancer to interrogate the tumor-intrinsic and -extrinsic mechanisms by which NE can promote metastasis. Our results showed that genetic ablation of NE significantly reduced lung metastasis and improved metastasis-free survival. RNA-sequencing analysis of primary tumors indicated differential regulation of tumor-intrinsic actin cytoskeleton signaling pathways by NE. These NE-regulated pathways are critical for cell-to-cell contact and motility and consistent with the delay in metastasis in NE-/- mice. To evaluate whether pharmacologic inhibition of NE inhibited pulmonary metastasis and phenotypically mimicked PyMT NE-/- mice, we utilized AZD9668, a clinically available and specific NE inhibitor. We found AZD9668 treated PyMT-NE+/+ mice showed significantly reduced lung metastases, improved recurrence-free, metastasis-free and overall survival, and their tumors showed similar molecular alterations as those observed in PyMT-NE-/- tumors. Finally, we identified a NE-specific signature that predicts recurrence and metastasis in patients with breast cancer. Collectively, our studies suggest that genetic ablation and pharmacologic inhibition of NE reduces metastasis and extends survival of mouse models of breast cancer, providing rationale to examine NE inhibitors as a treatment strategy for the clinical management of patients with metastatic breast cancer.
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Affiliation(s)
- Amriti R. Lulla
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Said Akli
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Cansu Karakas
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Joseph A. Caruso
- Department of Pathology and Helen Diller Cancer Center, University of California, San Francisco, CA 94143, USA
| | - Lucas D. Warma
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Natalie W. Fowlkes
- Department of Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Xiayu Rao
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jing Wang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Kelly K. Hunt
- Department of Breast Surgical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Stephanie S. Watowich
- Department of Immunology, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Khandan Keyomarsi
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
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Deguet A, Vigue MG, Donadieu J, Perrin JB, Petit P, Bellané-Chantelot C, Sirvent A, Jeziorski E. Liver abscess in a child with ELANE severe congenital neutropenia: Consider the possibility of a pyogenic infection. Pediatr Blood Cancer 2024; 71:e30863. [PMID: 38217077 DOI: 10.1002/pbc.30863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 12/26/2023] [Accepted: 12/29/2023] [Indexed: 01/14/2024]
Affiliation(s)
- Anna Deguet
- Department of Pediatrics, Montpellier University Hospital, Montpellier, France
| | | | - Jean Donadieu
- Pediatric Hematology Unit, Trousseau Hospital, APHP, Paris, France
| | | | - Philippe Petit
- Pediatric Imaging Department, APHM-Aix Marseilles Université, Marseille, France
| | | | - Anne Sirvent
- Department of Pediatric Oncology and Haematology, Montpellier Hospital, Montpellier, France
| | - Eric Jeziorski
- Department of Pediatric, CéRéMAIA (reference center for auto-inflammatory diseases and inflammatory amyloidosis), Montpellier University Hospital, Pathogenesis and Control of Chronic Infections, INSERM, Université de Montpellier, Montpellier, France
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Zheng S, Kummarapurugu AB, Bulut GB, Syed A, Kang L, Voynow JA. Neutrophil elastase activates the release of extracellular traps from COPD blood monocyte-derived macrophages. Clin Transl Sci 2023; 16:2765-2778. [PMID: 37926919 PMCID: PMC10719474 DOI: 10.1111/cts.13671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 09/27/2023] [Accepted: 10/06/2023] [Indexed: 11/07/2023] Open
Abstract
Neutrophil elastase (NE), a major inflammatory mediator in chronic obstructive pulmonary disease (COPD) airways, impairs macrophage function, contributing to persistence of airway inflammation. We hypothesized that NE activates a novel mechanism of macrophage-induced inflammation: release of macrophage extracellular traps (METs). The METs are composed of extracellular DNA decorated with granule proteinases and oxidants and may trigger persistent airway inflammation in COPD. To test the hypothesis, human blood monocytes were isolated from whole blood of subjects with COPD recruited following informed written consent. Patient demographics and clinical data were collected. Cells were cultured in media with GM-CSF to differentiate into blood monocyte derived macrophages (BMDMs). The BMDMs were treated with FITC-NE and unlabeled NE to determine intracellular localization by confocal microscopy and intracellular proteinase activity by DQ-Elastin assay. After NE exposure, released extracellular traps were quantified by abundance of extracellular DNA in conditioned media using the Pico Green assay. BMDM cell lysates were analyzed by Western analysis for proteolytic degradation of histone H3 or H4 or upregulation of peptidyl arginine deiminase (PAD) 2 and 4, two potential mechanisms to mediate extracellular trap DNA release. We observed that NE was taken up by COPD BMDM, localized to the cytosol and nucleus, and retained proteinase activity in the cell. NE induced MET release at doses as low as 50 nM. NE treatment caused histone H3 clipping but no effect on histone H4 nor PAD 2 or 4 abundance or activity. In summary, NE activated COPD MET release by clipping histone H3, a prerequisite for chromatin decondensation.
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Affiliation(s)
- Shuo Zheng
- Division of Pediatric Pulmonary MedicineChildren's Hospital of Richmond at VCURichmondVirginiaUSA
| | - Apparao B. Kummarapurugu
- Division of Pediatric Pulmonary MedicineChildren's Hospital of Richmond at VCURichmondVirginiaUSA
| | - Gamze B. Bulut
- Division of Pediatric Pulmonary MedicineChildren's Hospital of Richmond at VCURichmondVirginiaUSA
| | - Aamer Syed
- Division of Pulmonary and Critical Care MedicineDepartment of MedicineVCURichmondVirginiaUSA
| | - Le Kang
- Department of BiostatisticsVCURichmondVirginiaUSA
| | - Judith A. Voynow
- Division of Pediatric Pulmonary MedicineChildren's Hospital of Richmond at VCURichmondVirginiaUSA
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Komvilaisak P, Yudhasompop N, Kanchanakamhaeng K, Hongeng S, Pakakasama S, Anurathapan U, Pongphitcha P, Songdej D, Sasanakul W, Sirachainan N. Screening for ELANE, HAX1 and GFI1 gene mutations in children with neutropenia and clinical characterization of two novel mutations in ELANE gene. BMC Pediatr 2023; 23:592. [PMID: 37993852 PMCID: PMC10666431 DOI: 10.1186/s12887-023-04428-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 11/17/2023] [Indexed: 11/24/2023] Open
Abstract
BACKGROUND Congenital neutropenia is a rare disease. Recurrent infections since young age are the presentation. The most common mutation causing severe congenital neutropenia (SCN) and cyclic neutropenia (CyN) is the ELANE gene. The objectives of this study were to screen the three common genetic mutations of ELANE, HAX1 and GFI1 in children with chronic neutropenia and to describe the clinical characteristics of children who had the mutations. METHODS Infants having ANC < 1,000/cu mm or children aged > 1 year having ANC < 1,500/cu mm at least 3 times in 3 months were enrolled in the study. Patients who had acquired neutropenia due to infection, immune deficiency, or drugs were excluded. The ELANE gene was first studied; and if mutations were not identified, the HAX1 and GFI1 genes were further examined. RESULTS A total of 60 patients were enrolled in the study. The median (range) age, ratio of female to male, ANC, and last follow-up age were 9.2 (0.5-45.2) months, 1:1.2, 248 (0-1,101) /cu mm, and 19.9 (3.5-202.3) months, respectively. Infections were noted in 67.3% of all patients. ELANE gene mutation was found in only four patients (6.7%), and the rest (56 patients) showed no mutations in the HAX1 and GFI1 genes. In patients without mutations, 66.0% had normal ANC during the follow-up, with a median (range) age for normal ANC of 19.8 (4.0-60.0) months. Two novel mutations p. Ala79del (c.234_236del) and p. Val197GlufsTer18 (c.589_590insAGGCCGGC) were identified, and they respectively cause SCN and CyN. Patients with the two novel mutations presented with several episodes of infection, including pneumonia, sepsis, abscess, otitis media, and gum infection. CONCLUSION The genetic screening for ELANE, HAX1, and GFI1 gene mutations in 60 patients with chronic neutropenia could identify four patients (6.7%) with ELANE gene mutation and two novel mutations, p. Ala79del in exon 3 and p. Val197GlufsTer18 in exon 4 causing SCN; and CyN, respectively.
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Affiliation(s)
- Patcharee Komvilaisak
- Departments of Pediatrics, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Najwa Yudhasompop
- Department of Pediatrics, Hatyai Hospital, Hatyai, Songkhla, Thailand
| | - Kittima Kanchanakamhaeng
- Departments of Pediatrics, Sawanpracharak Hospital, Sawanpracharak Hospital, Nakhon Sawan, Thailand
| | - Suradej Hongeng
- Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Ratchathewi District, Bangkok, 10400, Thailand
| | - Samart Pakakasama
- Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Ratchathewi District, Bangkok, 10400, Thailand
| | - Usanarat Anurathapan
- Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Ratchathewi District, Bangkok, 10400, Thailand
| | - Pongpak Pongphitcha
- Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Ratchathewi District, Bangkok, 10400, Thailand
| | - Duantida Songdej
- Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Ratchathewi District, Bangkok, 10400, Thailand
| | - Werasak Sasanakul
- Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Ratchathewi District, Bangkok, 10400, Thailand
| | - Nongnuch Sirachainan
- Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Ratchathewi District, Bangkok, 10400, Thailand.
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Cachia J, Camilleri DJ, Pace D. Novel ELANE mutation causing severe congenital neutropenia with unpredictable fluctuations in neutrophil counts. Pediatr Blood Cancer 2023; 70:e30640. [PMID: 37596916 DOI: 10.1002/pbc.30640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/21/2023]
Affiliation(s)
- Joanna Cachia
- Department of Child and Adolescent Health, Mater Dei Hospital, Triq id-Donaturi tad-Demm, Msida, Malta
| | - David J Camilleri
- Department of Haematology, Sir Anthony Mamo Oncology Centre, Triq id-Donaturi tad-Demm, Msida, Malta
| | - David Pace
- Department of Child and Adolescent Health, Mater Dei Hospital, Triq id-Donaturi tad-Demm, Msida, Malta
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Yang M, Zhou X, Pearce SW, Yang Z, Chen Q, Niu K, Liu C, Luo J, Li D, Shao Y, Zhang C, Chen D, Wu Q, Cutillas PR, Zhao L, Xiao Q, Zhang L. Causal Role for Neutrophil Elastase in Thoracic Aortic Dissection in Mice. Arterioscler Thromb Vasc Biol 2023; 43:1900-1920. [PMID: 37589142 PMCID: PMC10521802 DOI: 10.1161/atvbaha.123.319281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 08/01/2023] [Indexed: 08/18/2023]
Abstract
BACKGROUND Thoracic aortic dissection (TAD) is a life-threatening aortic disease without effective medical treatment. Increasing evidence has suggested a role for NE (neutrophil elastase) in vascular diseases. In this study, we aimed at investigating a causal role for NE in TAD and exploring the molecular mechanisms involved. METHODS β-aminopropionitrile monofumarate was administrated in mice to induce TAD. NE deficiency mice, pharmacological inhibitor GW311616A, and adeno-associated virus-2-mediated in vivo gene transfer were applied to explore a causal role for NE and associated target gene in TAD formation. Multiple functional assays and biochemical analyses were conducted to unravel the underlying cellular and molecular mechanisms of NE in TAD. RESULTS NE aortic gene expression and plasma activity was significantly increased during β-aminopropionitrile monofumarate-induced TAD and in patients with acute TAD. NE deficiency prevents β-aminopropionitrile monofumarate-induced TAD onset/development, and GW311616A administration ameliorated TAD formation/progression. Decreased levels of neutrophil extracellular traps, inflammatory cells, and MMP (matrix metalloproteinase)-2/9 were observed in NE-deficient mice. TBL1x (F-box-like/WD repeat-containing protein TBL1x) has been identified as a novel substrate and functional downstream target of NE in TAD. Loss-of-function studies revealed that NE mediated inflammatory cell transendothelial migration by modulating TBL1x-LTA4H (leukotriene A4 hydrolase) signaling and that NE regulated smooth muscle cell phenotype modulation under TAD pathological condition by regulating TBL1x-MECP2 (methyl CpG-binding protein 2) signal axis. Further mechanistic studies showed that TBL1x inhibition decreased the binding of TBL1x and HDAC3 (histone deacetylase 3) to MECP2 and LTA4H gene promoters, respectively. Finally, adeno-associated virus-2-mediated Tbl1x gene knockdown in aortic smooth muscle cells confirmed a regulatory role for TBL1x in NE-mediated TAD formation. CONCLUSIONS We unravel a critical role of NE and its target TBL1x in regulating inflammatory cell migration and smooth muscle cell phenotype modulation in the context of TAD. Our findings suggest that the NE-TBL1x signal axis represents a valuable therapeutic for treating high-risk TAD patients.
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Affiliation(s)
- Mei Yang
- Department of Cardiology, Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China (M.Y., Q.C., D.L., L. Zhang)
- Faculty of Medicine and Dentistry, William Harvey Research Institute (M.Y., X.Z., S.W.A.P., Z.Y., K.N., C.L., Q.X.), Queen Mary University of London, United Kingdom
| | - Xinmiao Zhou
- Faculty of Medicine and Dentistry, William Harvey Research Institute (M.Y., X.Z., S.W.A.P., Z.Y., K.N., C.L., Q.X.), Queen Mary University of London, United Kingdom
- Department of Respiratory and Critical Care Medicine, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China (X.Z.)
| | - Stuart W.A. Pearce
- Faculty of Medicine and Dentistry, William Harvey Research Institute (M.Y., X.Z., S.W.A.P., Z.Y., K.N., C.L., Q.X.), Queen Mary University of London, United Kingdom
| | - Zhisheng Yang
- Faculty of Medicine and Dentistry, William Harvey Research Institute (M.Y., X.Z., S.W.A.P., Z.Y., K.N., C.L., Q.X.), Queen Mary University of London, United Kingdom
| | - Qishan Chen
- Department of Cardiology, Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China (M.Y., Q.C., D.L., L. Zhang)
| | - Kaiyuan Niu
- Faculty of Medicine and Dentistry, William Harvey Research Institute (M.Y., X.Z., S.W.A.P., Z.Y., K.N., C.L., Q.X.), Queen Mary University of London, United Kingdom
| | - Chenxin Liu
- Faculty of Medicine and Dentistry, William Harvey Research Institute (M.Y., X.Z., S.W.A.P., Z.Y., K.N., C.L., Q.X.), Queen Mary University of London, United Kingdom
| | - Jun Luo
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, China (J.L., Y.S., C.Z., D.C., Q.W.)
| | - Dan Li
- Department of Cardiology, Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China (M.Y., Q.C., D.L., L. Zhang)
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, China (D.L., L. Zhao)
| | - Yue Shao
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, China (J.L., Y.S., C.Z., D.C., Q.W.)
| | - Cheng Zhang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, China (J.L., Y.S., C.Z., D.C., Q.W.)
| | - Dan Chen
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, China (J.L., Y.S., C.Z., D.C., Q.W.)
| | - Qingchen Wu
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, China (J.L., Y.S., C.Z., D.C., Q.W.)
| | - Pedro R. Cutillas
- Faculty of Medicine and Dentistry, Centre for Haemato-Oncology, Barts Cancer Institute (P.R.C.), Queen Mary University of London, United Kingdom
| | - Lin Zhao
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, China (D.L., L. Zhao)
| | - Qingzhong Xiao
- Faculty of Medicine and Dentistry, William Harvey Research Institute (M.Y., X.Z., S.W.A.P., Z.Y., K.N., C.L., Q.X.), Queen Mary University of London, United Kingdom
- Key Laboratory of Cardiovascular Diseases, School of Basic Medical Sciences, Guangzhou Institute of Cardiovascular Disease, The Second Affiliated Hospital, Guangzhou Medical University, China (Q.X.)
| | - Li Zhang
- Department of Cardiology, Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China (M.Y., Q.C., D.L., L. Zhang)
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Núñez-Núñez ME, Lona-Reyes JC, López-Barragán B, Cruz-Osorio RM, Gutiérrez-Zepeda BM, Quintero-Ramos A, Becerra-Loaiza DS. Case Report: Characterization of known (c.607G>C) and novel (c.416C>G) ELANE mutations in two Mexican families with congenital neutropenia. Front Immunol 2023; 14:1194262. [PMID: 37795094 PMCID: PMC10547563 DOI: 10.3389/fimmu.2023.1194262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 08/30/2023] [Indexed: 10/06/2023] Open
Abstract
The most common causes of congenital neutropenia are mutations in the ELANE (Elastase, Neutrophil Expressed) gene (19p13.3), mostly in exon 5 and the distal portion of exon 4, which result in different clinical phenotypes of neutropenia. Here, we report two pathogenic mutations in ELANE, namely, c.607G>C (p.Gly203Arg) and a novel variant c.416C>G (p.Pro139Arg), found in two Mexican families ascertained via patients with congenital neutropenia who responded positively to the granulocyte colony-stimulating factor (G-CSF) treatment. These findings highlight the usefulness of identifying variants in patients with inborn errors of immunity for early clinical management and the need to rule out mosaicism in noncarrier parents with more than one case in the family.
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Affiliation(s)
- María Enriqueta Núñez-Núñez
- Departamento de Alergia e Inmunología Clínica Pediátrica, Nuevo Hospital Civil de Guadalajara “Dr. Juan I. Menchaca”, Guadalajara, Mexico
| | - Juan Carlos Lona-Reyes
- Departamento de Infectología, Nuevo Hospital Civil de Guadalajara “Dr. Juan I. Menchaca”, Guadalajara, Mexico
- Clínicas de Pediatría, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - Brenda López-Barragán
- Departamento de Pediatría, Nuevo Hospital Civil de Guadalajara “Dr. Juan I. Menchaca”, Guadalajara, Mexico
| | - Rosa Margarita Cruz-Osorio
- Clínicas de Pediatría, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
- Departamento de Hemato-Oncología Pediátrica, Nuevo Hospital Civil de Guadalajara “Dr. Juan I. Menchaca”, Guadalajara, Mexico
| | - Bricia Melissa Gutiérrez-Zepeda
- Laboratorio de Inmunología, Departamento de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
- Doctorado en Genética Humana, Departamento de Biología Molecular y Genómica, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - Antonio Quintero-Ramos
- Laboratorio de Inmunología, Departamento de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
- Unidad de Investigación Biomédica 02, Hospital de Especialidades, Centro Médico Nacional de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico
| | - Denisse Stephania Becerra-Loaiza
- Laboratorio de Inmunología, Departamento de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
- Doctorado en Genética Humana, Departamento de Biología Molecular y Genómica, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
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8
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Liu XX, Dong J, Li J, Liu QH, Zhang H. [Congenital neutropenia caused by ELANE gene mutation: a case report]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:787. [PMID: 38049327 PMCID: PMC10630574 DOI: 10.3760/cma.j.issn.0253-2727.2023.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Indexed: 12/06/2023]
Affiliation(s)
- X X Liu
- Department of Hematology, the Second Affiliated Hospital of Shandong First Medical University, Taian 271000, China
| | - J Dong
- Department of Hematology, the Second Affiliated Hospital of Shandong First Medical University, Taian 271000, China
| | - J Li
- Department of Hematology, the Second Affiliated Hospital of Shandong First Medical University, Taian 271000, China
| | - Q H Liu
- Department of Clinical Laboratory, the Second Affiliated Hospital of Shandong First Medical University, Taian 271000, China
| | - H Zhang
- Department of Hematology, the Second Affiliated Hospital of Shandong First Medical University, Taian 271000, China
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Jia W, Luo Q, Wu J, Shi Y, Guan Q. Neutrophil elastase as a potential biomarker related to the prognosis of gastric cancer and immune cell infiltration in the tumor immune microenvironment. Sci Rep 2023; 13:13447. [PMID: 37596368 PMCID: PMC10439106 DOI: 10.1038/s41598-023-39404-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 07/25/2023] [Indexed: 08/20/2023] Open
Abstract
Exploring biomarkers interrelated the tumor immune microenvironment (TIME) provides novel ideas for predicting the prognosis of gastric cancer (GC) and developing new treatment strategies. We analyzed the differential gene expression levels between the high and low StromalScore and ImmuneScore groups. Neutrophil elastase (ELANE) was evaluated as a potential biomarker by conducting intersection analysis of the protein-protein interaction network and univariate Cox regression analysis. The expression of ELANE was evaluated by immunohistochemistry. Its prognostic value was evaluated using Kaplan-Meier (K-M) survival curves and multivariate Cox regression analysis and its potential biological molecular mechanism was examined by gene set enrichment analysis (GSEA). We applied the CIBERSORT computing method to analyze the relationship between ELANE and tumor immune-infiltrating cells (TIICs). K-M survival curve showed that higher ELANE expression was closely related to shorter overall survival. The Cox regression analysis indicated that the high expression of ELANE was an independent prognostic risk factor in patients with GC. The GSEA revealed that genes in the ELANE high-expression group were involved in the signaling pathways regulating immune response; genes in the ELANE low-expression group were involved in the signaling pathways that regulate metabolism. ELANE might be participate in the change of TIME from immunodominant to metabolically dominant and its expression was closely related to tumor mutation burden and multiple TIICs. ELANE is a potential biomarker for predicting the GC patients' survival and prognosis. It influences the tumor immune cell infiltration in the TIME, and affects the TIME to maintain their immune status.
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Affiliation(s)
- Wangqiang Jia
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Qianwen Luo
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Jiang Wu
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Yuanchao Shi
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Quanlin Guan
- The First Clinical Medical College of Lanzhou University, Lanzhou, China.
- Department of Oncology Surgery, The First Hospital of Lanzhou University, No. 1, Donggang West Road, Lanzhou, 730000, Gansu Province, China.
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10
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Wang J, Zhang H, Wang Y, Liang L, Yang Z. Severe congenital neutropenia caused by ELANE gene mutation: A case report and literature review. Medicine (Baltimore) 2022; 101:e31357. [PMID: 36343040 PMCID: PMC9646559 DOI: 10.1097/md.0000000000031357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
RATIONALE The Severe congenital neutropenia (SCN) is a rare genetic disease characterized by a deficiency of mature neutrophils in the bone marrow and peripheral blood disorders. After a BALF ACER examination, the patient was found to have a rareMycobacterium abscess infection. PATIENT CONCERNS We report a case of SCN withMycobacterium abscess infection caused by ELANE gene mutation. Conventional antiinfection and granulocyte colony-stimulating factor (G-CSF) did not ameliorate patient's symptoms. The absolute neutrophil count (ANC) most of the time < 0.50 × 109/L. DIAGNOSES According to Gene sequencing and other tests, the patient was diagnosed with SCN caused by ELANE gene mutation, severe pneumonia, Mycobacteriosis abscess, nutritional iron deficiency anemia, multiple abscesses of the skin, hypergammaglobuloemia, and thrush. INTERVENTIONS Anti-infection agents, abscess incision and drainage, blood transfusion, G-CSF were treated. OUTCOMES The fever subsided, the cough disappeared, the anemia improved, and the ANC improved (0.69 × 109/L). Currently, the patient has been followed up in the outpatient clinic for 20months, during which time fever, bone pain, gingivitis and thrush occasionally appeared. The ANC fluctuated between 0.20 and 1.27 × 109/L, suggesting the need for a timely hematopoietic stem cell transplant (HSCT). LESSONS ELANE gene-related SCN is rare in children, and the possibility of this disease should be considered in children with recurrent severe bacterial infections and a significant reduction in neutrophils in the peripheral blood shortly after birth. In addition to strengthening nursing care and actively preventing and controlling infection, other rare bacterial infections should be considered in clinical practice.
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Affiliation(s)
- Jing Wang
- Department of Respiratory, Anhui Provincial Children’s Hospital Affiliated to Anhui Medical University, Hefei, China
| | - Haitao Zhang
- Department of Respiratory, Anhui Provincial Children’s Hospital, Hefei, China
| | - Yu Wang
- Department of Respiratory, Anhui Provincial Children’s Hospital, Hefei, China
| | - Lei Liang
- Department of Respiratory, Anhui Provincial Children’s Hospital, Hefei, China
| | - Zeyu Yang
- Department of Respiratory, Anhui Provincial Children’s Hospital Affiliated to Anhui Medical University, Hefei, China
- *Correspondence: Zeyu Yang, Department of Respiratory, Anhui Provincial Children’s Hospital Affiliated to Anhui Medical University, Hefei 230000, China (e-mail: )
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11
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Wang Q, Que C, Chen G. Effects of leukocyte elastase in semen on sperm quality. Medicine (Baltimore) 2022; 101:e31111. [PMID: 36253993 PMCID: PMC9575735 DOI: 10.1097/md.0000000000031111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The study analyzed the effect of leukocyte elastase (LE) in 460 semen on sperm quality, and explore the reference interval of normal level of LE in semen. The differences of LE levels between normal semen and few, weak and abnormal semen were analyzed. Referring to domestic standards, the samples were divided into normal group (LE ≤ 250 ng/mL), occult infection (250 < LE ≤ 1000 ng/mL), and infection group (LE > 1000 ng/mL), and the differences in semen quality among the groups were compared. According to European standards, the samples were divided into normal group (≤600 ng/mL) and abnormal group (>600 ng/mL), and the differences in semen quality between the 2 groups were compared. The correlation between LE levels in semen and semen quality were analyzed. The positive rates of LE in the normal semen group and abnormal semen groups were 30.7% versus 34.7%, and there was no significant difference between the two groups (P > .05). When the semen divided into 3 groups, there was no significant difference between the physicochemical parameters, kinetic parameters, movement trajectory parameters, morphological parameters, and sperm DNA fragmentation index (DFI) (P > .05). There were significant differences in sperm morphology and sperm DFI between the two groups at 600 ng/mL (P < .05). Spearman correlation analysis showed that there was no significant difference between the level of LE in semen and physicochemical parameters, sperm kinetic parameters, sperm movement trajectory parameters, sperm morphological parameters, and sperm DFI (P > .05). It is appropriate to use 600 ng/mL as the threshold for the concentration of LE in semen; the correlation between the level of LE and sperm quality is not significant.
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Affiliation(s)
- Qingtai Wang
- The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine, Medical Laboratory, Fuzhou, China
| | - Chengwen Que
- Fujian Provincial Maternity and Children Hospital, Affiliated to Fujian Medical University Medical Laboratory, Fu Zhou, China
| | - Gangxin Chen
- Fujian Provincial Maternity and Children Hospital, Affiliated to Fujian Medical University, Assisted Reproduction Laboratory, Fu Zhou, China
- *Correspondence: Gangxin Chen, Fujian Provincial Maternity and Children Hospital, Affiliated to Fujian Medical University, 350001, China (e-mail: )
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12
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Arab F, Rezaei N, Taheri F, Kouhpeikar H, Rayzan E, Mirbeyk M, Zare-Abdollahi D, Ghadami M. The Clinical and Molecular Assessment of Iranian Families with Severe Congenital Neutropenia, Identification of HYOU1 and SHOC2 as Potential Novel Gene Defects. Iran J Allergy Asthma Immunol 2022; 21:344-354. [PMID: 35822684 DOI: 10.18502/ijaai.v21i3.9808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 05/08/2022] [Indexed: 06/15/2023]
Abstract
Neutropenia congenita grave (SCN) is a rare disease with a genetically and clinically heterogeneous nature, usually diagnosed in childhood, with an elevated risk of infections such as otitis, skin infections, pneumonia, deep abscesses, and septicemia. Patients with SCN also have an increased risk of leukemia, and mutations in the ELANE and the HAX1 genes have been observed in those patients. This study was conducted to genetically screen six Iranian families with SCN who have at least one affected person. In the first step, all exons and intron boundaries of ELANE and HAX1 genes were sequenced in probands. Cases with no pathogenic mutations were tested through whole-exome sequencing (WES). Analysis showed five different variants in ELANE (c.377 C>T), HAX1 (c.130_131 insA), HYOU1 (c.69 G>C and c.2744 G>A) and SHOC2 (c.4 A>G) genes in four families. We found that two out of six families had mutations in ELANE and HAX1 genes. Moreover, we found two novel mutations at the HYOU1 gene that had not previously been reported, as well as a pathogenic mutation at SHOC2 with multiple phenotypes, that will contribute to determining the genetic basis for SCN. Our study revealed that WES could help diagnose SCN, improve the classification of neutropenia, and rule out other immunodeficiencies such as autoimmune neutropenia, primary immunodeficiency diseases, and inherited bone marrow failure syndromes.
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Affiliation(s)
- Fatemeh Arab
- Department of Medical Genetics, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center Hospital, Tehran University of Medical Sciences, Tehran, Iran AND International Hematology/Oncology of Pediatrics' experts (IHOPE), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
| | - Forough Taheri
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Hamideh Kouhpeikar
- Department of Hematology and Blood Bank, Tabas School of Nursing, Birjand University of Medical Sciences, Birjand, Iran.
| | - Elham Rayzan
- International Hematology/Oncology of Pediatrics' Experts (IHOPE), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
| | - Mona Mirbeyk
- Research Center for Immunodeficiencies, Children's Medical Center Hospital, Tehran University of Medical Sciences, Tehran, Iran.
| | - Davood Zare-Abdollahi
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mohsen Ghadami
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran AND Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran AND Cardiac Primary Prevention Research Center, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran.
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13
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Dias BT, Goundry A, Vivarini AC, Costa TFR, Mottram JC, Lopes UG, Lima APCA. Toll-Like Receptor- and Protein Kinase R-Induced Type I Interferon Sustains Infection of Leishmania donovani in Macrophages. Front Immunol 2022; 13:801182. [PMID: 35154115 PMCID: PMC8831251 DOI: 10.3389/fimmu.2022.801182] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/06/2022] [Indexed: 12/27/2022] Open
Abstract
Leishmania donovani is a protozoan parasite that causes visceral leishmaniasis, provoking liver and spleen tissue destruction that is lethal unless treated. The parasite replicates in macrophages and modulates host microbicidal responses. We have previously reported that neutrophil elastase (NE) is required to sustain L. donovani intracellular growth in macrophages through the induction of interferon beta (IFN-β). Here, we show that the gene expression of IFN-β by infected macrophages was reduced by half when TLR4 was blocked by pre-treatment with neutralizing antibodies or in macrophages from tlr2-/- mice, while the levels in macrophages from myd88-/- mice were comparable to those from wild-type C57BL/6 mice. The neutralization of TLR4 in tlr2-/- macrophages completely abolished induction of IFN-β gene expression upon parasite infection, indicating an additive role for both TLRs. Induction of type I interferon (IFN-I), OASL2, SOD1, and IL10 gene expression by L. donovani was completely abolished in macrophages from NE knock-out mice (ela2-/-) or from protein kinase R (PKR) knock-out mice (pkr-/-), and in C57BL/6 macrophages infected with transgenic L. donovani expressing the inhibitor of serine peptidase 2 (ISP2). Parasite intracellular growth was impaired in pkr-/- macrophages but was fully restored by the addition of exogenous IFN-β, and parasite burdens were reduced in the spleen of pkr-/- mice at 7 days, as compared to the 129Sv/Ev background mice. Furthermore, parasites were unable to grow in macrophages lacking TLR3, which correlated with lack of IFN-I gene expression. Thus, L. donovani engages innate responses in infected macrophages via TLR2, TLR4, and TLR3, via downstream PKR, to induce the expression of pro-survival genes in the host cell, and guarantee parasite intracellular development.
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Affiliation(s)
- Bruna T. Dias
- Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Amy Goundry
- Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Aislan C. Vivarini
- Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tatiana F. R. Costa
- Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jeremy C. Mottram
- York Biomedical Research Institute, Department of Biology, University of York, York, United Kingdom
| | - Ulisses G. Lopes
- Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Paula C. A. Lima
- Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- *Correspondence: Ana Paula C. A. Lima,
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14
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Wilkinson DJ, Falconer AMD, Wright HL, Lin H, Yamamoto K, Cheung K, Charlton SH, Arques MDC, Janciauskiene S, Refaie R, Rankin KS, Young DA, Rowan AD. Matrix metalloproteinase-13 is fully activated by neutrophil elastase and inactivates its serpin inhibitor, alpha-1 antitrypsin: Implications for osteoarthritis. FEBS J 2022; 289:121-139. [PMID: 34270864 DOI: 10.1111/febs.16127] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 06/23/2021] [Accepted: 07/15/2021] [Indexed: 01/15/2023]
Abstract
Matrix metalloproteinase-13 (MMP-13) is a uniquely important collagenase that promotes the irreversible destruction of cartilage collagen in osteoarthritis (OA). Collagenase activation is a key control point for cartilage breakdown to occur, yet our understanding of the proteinases involved in this process is limited. Neutrophil elastase (NE) is a well-described proteoglycan-degrading enzyme which is historically associated with inflammatory arthritis, but more recent evidence suggests a potential role in OA. In this study, we investigated the effect of neutrophil elastase on OA cartilage collagen destruction and collagenase activation. Neutrophil elastase induced significant collagen destruction from human OA cartilage ex vivo, in an MMP-dependent manner. In vitro, neutrophil elastase directly and robustly activated pro-MMP-13, and N-terminal sequencing identified cleavage close to the cysteine switch at 72 MKKPR, ultimately resulting in the fully active form with the neo-N terminus of 85 YNVFP. Mole-per-mole, activation was more potent than by MMP-3, a classical collagenase activator. Elastase was detectable in human OA synovial fluid and OA synovia which displayed histologically graded evidence of synovitis. Bioinformatic analyses demonstrated that, compared with other tissues, control cartilage exhibited remarkably high transcript levels of the major elastase inhibitor, (AAT) alpha-1 antitrypsin (gene name SERPINA1), but these were reduced in OA. AAT was located predominantly in superficial cartilage zones, and staining enhanced in regions of cartilage damage. Finally, active MMP-13 specifically inactivated AAT by removal of the serine proteinase cleavage/inhibition site. Taken together, this study identifies elastase as a novel activator of pro-MMP-13 that has relevance for cartilage collagen destruction in OA patients with synovitis.
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Affiliation(s)
- David J Wilkinson
- Institute of Life Course and Medical Sciences, University of Liverpool, UK
- Skeletal Research Group, Institute of Genetic Medicine, Newcastle University, UK
| | - Adrian M D Falconer
- Skeletal Research Group, Institute of Genetic Medicine, Newcastle University, UK
| | - Helen L Wright
- Institute of Life Course and Medical Sciences, University of Liverpool, UK
| | - Hua Lin
- Skeletal Research Group, Institute of Genetic Medicine, Newcastle University, UK
| | - Kazuhiro Yamamoto
- Institute of Life Course and Medical Sciences, University of Liverpool, UK
| | - Kathleen Cheung
- Skeletal Research Group, Institute of Genetic Medicine, Newcastle University, UK
| | - Sarah H Charlton
- Skeletal Research Group, Institute of Genetic Medicine, Newcastle University, UK
| | | | - Sabina Janciauskiene
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Department of Respiratory Medicine, Deutsches Zentrum für Lungenforschung, Hannover Medical School, Germany
| | - Ramsay Refaie
- Skeletal Research Group, Institute of Genetic Medicine, Newcastle University, UK
| | - Kenneth S Rankin
- Translational and Clinical Research Institute, Newcastle Centre for Cancer, UK
| | - David A Young
- Skeletal Research Group, Institute of Genetic Medicine, Newcastle University, UK
| | - Andrew D Rowan
- Skeletal Research Group, Institute of Genetic Medicine, Newcastle University, UK
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15
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Ilonze C, Galipp KM, Scordino T, Meyer WH, Baker A. A Case of Cyclic Neutropenia and Associated Amyloidosis. J Pediatr Hematol Oncol 2021; 43:e1115-e1117. [PMID: 34224518 DOI: 10.1097/mph.0000000000002217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 03/26/2021] [Indexed: 11/25/2022]
Abstract
Cyclic neutropenia has been rarely associated with chronic inflammation and development of reactive AA amyloidosis. We report a family with cyclic neutropenia with associated renal and thyroid amyloid. A 12-year-old female presented with thyromegaly, recurrent aphthous ulcers, severe neutropenia, and renal failure. Renal and thyroid biopsies revealed abundant amyloid deposition. Presence of a heterozygous ELANE c.358 A>T gene mutation p.I120F variant with autosomal dominant inheritance confirmed the diagnosis of cyclic neutropenia. The patient's father also had neutropenia and amyloidosis with renal failure. We started filgrastim to attenuate neutropenia and thereby reduce chronic inflammation and minimize further amyloid deposition.
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Affiliation(s)
- Chibuzo Ilonze
- Department of Pediatrics, Jimmy Everest Section of Pediatric Hematology/Oncology
- Department of Pediatrics, Division of Pediatric Hematology/Oncology, University of South Alabama, Mobile, AL
| | - Kari M Galipp
- Department of Pediatrics, Jimmy Everest Section of Pediatric Hematology/Oncology
| | - Teresa Scordino
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK
| | - William H Meyer
- Department of Pediatrics, Jimmy Everest Section of Pediatric Hematology/Oncology
| | - Ashley Baker
- Department of Pediatrics, Jimmy Everest Section of Pediatric Hematology/Oncology
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16
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Affiliation(s)
- Julia Skokowa
- From the Department of Oncology, Hematology, Clinical Immunology, and Rheumatology, University Hospital Tübingen, Tübingen, Germany
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17
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Horwitz MS. Neutrophil elastase: Nonsense lost in translation. Cell Stem Cell 2021; 28:790-792. [PMID: 33961760 DOI: 10.1016/j.stem.2021.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In this issue of Cell Stem Cell, Daniel Bauer and colleagues investigate the pathogenesis of ELANE-associated severe congenital neutropenia (SCN) and describe two potentially universal gene correction strategies for autosomal dominant disorders (Rao et al., 2021). One exploits nonsense-mediated decay to prevent translation of the mutant allele. The other unexpectedly blocks translation by shortening the 3'-UTR.
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Affiliation(s)
- Marshall S Horwitz
- Institute for Stem Cell and Regenerative Medicine, Department of Laboratory Medicine & Pathology, University of Washington School of Medicine, Seattle, WA 98109, USA.
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18
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Rao S, Yao Y, Soares de Brito J, Yao Q, Shen AH, Watkinson RE, Kennedy AL, Coyne S, Ren C, Zeng J, Serbin AV, Studer S, Ballotti K, Harris CE, Luk K, Stevens CS, Armant M, Pinello L, Wolfe SA, Chiarle R, Shimamura A, Lee B, Newburger PE, Bauer DE. Dissecting ELANE neutropenia pathogenicity by human HSC gene editing. Cell Stem Cell 2021; 28:833-845.e5. [PMID: 33513358 PMCID: PMC8106646 DOI: 10.1016/j.stem.2020.12.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 11/15/2020] [Accepted: 12/18/2020] [Indexed: 02/07/2023]
Abstract
Severe congenital neutropenia (SCN) is a life-threatening disorder most often caused by dominant mutations of ELANE that interfere with neutrophil maturation. We conducted a pooled CRISPR screen in human hematopoietic stem and progenitor cells (HSPCs) that correlated ELANE mutations with neutrophil maturation potential. Highly efficient gene editing of early exons elicited nonsense-mediated decay (NMD), overcame neutrophil maturation arrest in HSPCs from ELANE-mutant SCN patients, and produced normal hematopoietic engraftment function. Conversely, terminal exon frameshift alleles that mimic SCN-associated mutations escaped NMD, recapitulated neutrophil maturation arrest, and established an animal model of ELANE-mutant SCN. Surprisingly, only -1 frame insertions or deletions (indels) impeded neutrophil maturation, whereas -2 frame late exon indels repressed translation and supported neutrophil maturation. Gene editing of primary HSPCs allowed faithful identification of variant pathogenicity to clarify molecular mechanisms of disease and encourage a universal therapeutic approach to ELANE-mutant neutropenia, returning normal neutrophil production and preserving HSPC function.
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Affiliation(s)
- Shuquan Rao
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Yao Yao
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA; School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Josias Soares de Brito
- Departments of Pediatrics and of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Qiuming Yao
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA; Molecular Pathology Unit, Center for Cancer Research, and Center for Computational and Integrative Biology, Massachusetts General Hospital, Department of Pathology, Harvard Medical School, Boston, MA 02129, USA
| | - Anne H Shen
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Ruth E Watkinson
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Alyssa L Kennedy
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Steven Coyne
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Chunyan Ren
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Jing Zeng
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Anna Victoria Serbin
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA; Harvard College, Cambridge, MA 02138, USA
| | - Sabine Studer
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Kaitlyn Ballotti
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Chad E Harris
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Kevin Luk
- Department of Molecular, Cell and Cancer Biology, Li Weibo Institute for Rare Diseases Research, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Christian S Stevens
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Myriam Armant
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Luca Pinello
- Molecular Pathology Unit, Center for Cancer Research, and Center for Computational and Integrative Biology, Massachusetts General Hospital, Department of Pathology, Harvard Medical School, Boston, MA 02129, USA
| | - Scot A Wolfe
- Department of Molecular, Cell and Cancer Biology, Li Weibo Institute for Rare Diseases Research, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Roberto Chiarle
- Department of Pathology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Akiko Shimamura
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Benhur Lee
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Peter E Newburger
- Departments of Pediatrics and of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Daniel E Bauer
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Broad Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA.
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Vignesh P, Mondal S, Sudhakar M, Sharma YK, Bansal A, Singh M, Sachdeva MUS. SARS-CoV-2 Infection in a Child with Severe Congenital Neutropenia. J Clin Immunol 2021; 41:1165-1168. [PMID: 33942228 PMCID: PMC8092716 DOI: 10.1007/s10875-021-01054-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 04/27/2021] [Indexed: 11/27/2022]
Affiliation(s)
- Pandiarajan Vignesh
- Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India.
| | - Sanjib Mondal
- Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Murugan Sudhakar
- Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Yogish Kumar Sharma
- Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Arun Bansal
- Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Mini Singh
- Department of Virology, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Man Updesh Singh Sachdeva
- Department of Hematology, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
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20
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Tran NT, Graf R, Wulf-Goldenberg A, Stecklum M, Strauß G, Kühn R, Kocks C, Rajewsky K, Chu VT. CRISPR-Cas9-Mediated ELANE Mutation Correction in Hematopoietic Stem and Progenitor Cells to Treat Severe Congenital Neutropenia. Mol Ther 2020; 28:2621-2634. [PMID: 32822592 PMCID: PMC7704744 DOI: 10.1016/j.ymthe.2020.08.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 07/09/2020] [Accepted: 08/05/2020] [Indexed: 01/08/2023] Open
Abstract
Severe congenital neutropenia (SCN) is a monogenic disorder. SCN patients are prone to recurrent life-threatening infections. The main causes of SCN are autosomal dominant mutations in the ELANE gene that lead to a block in neutrophil differentiation. In this study, we use CRISPR-Cas9 ribonucleoproteins and adeno-associated virus (AAV)6 as a donor template delivery system to repair the ELANEL172P mutation in SCN patient-derived hematopoietic stem and progenitor cells (HSPCs). We used a single guide RNA (sgRNA) specifically targeting the mutant allele, and an sgRNA targeting exon 4 of ELANE. Using the latter sgRNA, ∼34% of the known ELANE mutations can in principle be repaired. We achieved gene correction efficiencies of up to 40% (with sgELANE-ex4) and 56% (with sgELANE-L172P) in the SCN patient-derived HSPCs. Gene repair restored neutrophil differentiation in vitro and in vivo upon HSPC transplantation into humanized mice. Mature edited neutrophils expressed normal elastase levels and behaved normally in functional assays. Thus, we provide a proof of principle for using CRISPR-Cas9 to correct ELANE mutations in patient-derived HSPCs, which may translate into gene therapy for SCN.
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Affiliation(s)
- Ngoc Tung Tran
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
| | - Robin Graf
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
| | | | | | | | - Ralf Kühn
- iPS Cell Based Disease Modeling, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
| | - Christine Kocks
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany; Transgenics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
| | - Klaus Rajewsky
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany.
| | - Van Trung Chu
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany; iPS Cell Based Disease Modeling, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany.
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21
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Zhu H, Liao Q, Gong Y, Xu B, Zhang C, Zhao H. [Clinical and genetic analysis of four patients with congenital neutropenia]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2020; 37:1222-1225. [PMID: 33179225 DOI: 10.3760/cma.j.cn511374-20190825-00430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To delineate the clinical feature and genetic basis of four patients with congenital neutropenia. METHODS All patients were subjected to whole exome sequencing (WES). Suspected variants were verified by Sanger sequencing. RESULTS The patients (two boys and two girls), aged 7 to 15 months, suffered from neutropenia and recurrent infections. Bone marrow smears showed a significant decrease in the proportion of rod-shaped and lobulated granulocytes, which suggested impaired development and maturation of bone marrow neutrophils. WES has discovered heterozygous variants (c.496G>A, c.58C>G, c.391G>A and IVS1+5T>A) of the ELANE gene in the patients. Among these, c.58C>G and IVS1+5T>A were unreported previously. Follow up revealed patients 1 and 3 had periodic neutropenia, while patients 2 and 4 had severe congenital neutropenia. After attaining the definite diagnosis, the patients were treated symptomatically. CONCLUSION The main clinical feature of congenital neutropenia is refractory recurrent bacterial infections, for which mutations of the ELANE gene are a common cause. Two novel pathogenic ELANE variants have been discovered in this study.
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Affiliation(s)
- Hao Zhu
- Department of Pediatrics, Xianning Central Hospital, the First Affiliated Hospital of Hubei University of Science and Technology, Xianning, Hubei 437100, China.
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22
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Vargas-Alarcón G, Posadas-Sánchez R, Ramírez-Bello J. Variability in genes related to SARS-CoV-2 entry into host cells (ACE2, TMPRSS2, TMPRSS11A, ELANE, and CTSL) and its potential use in association studies. Life Sci 2020; 260:118313. [PMID: 32835700 PMCID: PMC7441892 DOI: 10.1016/j.lfs.2020.118313] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 08/07/2020] [Accepted: 08/19/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND The prevalence and mortality of the outbreak of the COVID-19 pandemic show marked geographic variation. The presence of several subtypes of the coronavirus and the genetic differences in the populations could condition that variation. Thus, the objective of this study was to propose variants in genes that encode proteins related to the SARS-CoV-2 entry into the host cells as possible targets for genetic associations studies. METHODS The allelic frequencies of the polymorphisms in the ACE2, TMPRSS2, TMPRSS11A, cathepsin L (CTSL), and elastase (ELANE) genes were obtained in four populations from the American, African, European, and Asian continents reported in the 1000 Genome Project. Moreover, we evaluated the potential biological effect of these variants using different web-based tools. RESULTS In the coding sequences of these genes, we detected one probably-damaging polymorphism located in the TMPRSS2 gene (rs12329760) that produces a change of amino acid. Furthermore, forty-eight polymorphisms with possible functional consequences were detected in the non-coding sequences of the following genes: three in ACE2, seventeen in TMPRSS2, ten in TMPRSS11A, twelve in ELANE, and six in CTSL. These polymorphisms produce binding sites for transcription factors and microRNAs. The minor allele frequencies of these polymorphisms vary in each community; indeed, some of them are high in specific populations. CONCLUSION In summary, using data of the 1000 Genome Project and web-based tools, we propose some polymorphisms, which, depending on the population, could be used for genetic association studies.
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Affiliation(s)
- Gilberto Vargas-Alarcón
- Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico.
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23
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Liu H, Liu G, Zhao P, Huang L, Zhou Y, Qiu X, Xu L. [Clinical and genetic analysis of two patients with congenital neutropenia caused by ELANE gene mutation]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2020; 37:1097-1101. [PMID: 32924109 DOI: 10.3760/cma.j.cn511374-20190922-00487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To explore the clinical characteristics of congenital neutropenia caused by ELANE gene mutations. METHODS Clinical manifestations, absolute blood neutrophil count, high-throughput exome sequencing for mutation screening, suspected locus Sanger sequencing verification, processes of diagnosis and treatment of two patients with congenital neutropenia caused by ELANE gene mutation were retrospectively analyzed. RESULTS High-throughput sequencing has found that proband 1 has carried a heterozygous c.170C>T (p.Ala57Val) missense mutation in exon 2 of the ELANE gene, which was known to be pathological, and a heterozygous c.251T>G (p.Leu84Arg) mutation in exon 3 of proband 2, which was unreported previously. Sanger sequencing confirmed that neither mutation was inherited from their parents. CONCLUSION ELANE mutation is an important cause for congenital neutropenia. Detection of new pathogenic variants has enriched the mutation spectrum of the ELANE gene.
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Affiliation(s)
- Hui Liu
- Department of Pediatrics, Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350001, China.
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24
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Schapher M, Koch M, Weidner D, Scholz M, Wirtz S, Mahajan A, Herrmann I, Singh J, Knopf J, Leppkes M, Schauer C, Grüneboom A, Alexiou C, Schett G, Iro H, Muñoz LE, Herrmann M. Neutrophil Extracellular Traps Promote the Development and Growth of Human Salivary Stones. Cells 2020; 9:cells9092139. [PMID: 32971767 PMCID: PMC7564068 DOI: 10.3390/cells9092139] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/13/2020] [Accepted: 09/16/2020] [Indexed: 12/16/2022] Open
Abstract
Salivary gland stones, or sialoliths, are the most common cause of the obstruction of salivary glands. The mechanism behind the formation of sialoliths has been elusive. Symptomatic sialolithiasis has a prevalence of 0.45% in the general population, is characterized by recurrent painful periprandial swelling of the affected gland, and often results in sialadenitis with the need for surgical intervention. Here, we show by the use of immunohistochemistry, immunofluorescence, computed tomography (CT) scans and reconstructions, special dye techniques, bacterial genotyping, and enzyme activity analyses that neutrophil extracellular traps (NETs) initiate the formation and growth of sialoliths in humans. The deposition of neutrophil granulocyte extracellular DNA around small crystals results in the dense aggregation of the latter, and the subsequent mineralization creates alternating layers of dense mineral, which are predominantly calcium salt deposits and DNA. The further agglomeration and appositional growth of these structures promotes the development of macroscopic sialoliths that finally occlude the efferent ducts of the salivary glands, causing clinical symptoms and salivary gland dysfunction. These findings provide an entirely novel insight into the mechanism of sialolithogenesis, in which an immune system-mediated response essentially participates in the physicochemical process of concrement formation and growth.
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Affiliation(s)
- Mirco Schapher
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Otolaryngology, Head and Neck Surgery, Universitätsklinikum Erlangen, Waldstrasse 1, 91054 Erlangen, Germany; (M.S.); (M.K.); (C.A.); (H.I.)
| | - Michael Koch
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Otolaryngology, Head and Neck Surgery, Universitätsklinikum Erlangen, Waldstrasse 1, 91054 Erlangen, Germany; (M.S.); (M.K.); (C.A.); (H.I.)
| | - Daniela Weidner
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Michael Scholz
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Institute of Functional and Clinical Anatomy, Universitätsstrasse 19, 91054 Erlangen, Germany;
| | - Stefan Wirtz
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 1, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany
| | - Aparna Mahajan
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Irmgard Herrmann
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Jeeshan Singh
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Jasmin Knopf
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Moritz Leppkes
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 1, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany
| | - Christine Schauer
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Anika Grüneboom
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Christoph Alexiou
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Otolaryngology, Head and Neck Surgery, Universitätsklinikum Erlangen, Waldstrasse 1, 91054 Erlangen, Germany; (M.S.); (M.K.); (C.A.); (H.I.)
| | - Georg Schett
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Heinrich Iro
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Otolaryngology, Head and Neck Surgery, Universitätsklinikum Erlangen, Waldstrasse 1, 91054 Erlangen, Germany; (M.S.); (M.K.); (C.A.); (H.I.)
| | - Luis E. Muñoz
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Martin Herrmann
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
- Correspondence:
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Garg B, Mehta HM, Wang B, Kamel R, Horwitz MS, Corey SJ. Inducible expression of a disease-associated ELANE mutation impairs granulocytic differentiation, without eliciting an unfolded protein response. J Biol Chem 2020; 295:7492-7500. [PMID: 32299910 PMCID: PMC7247317 DOI: 10.1074/jbc.ra120.012366] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 04/09/2020] [Indexed: 01/08/2023] Open
Abstract
Severe congenital neutropenia (SCN) is characterized by a near absence of neutrophils, rendering individuals with this disorder vulnerable to recurrent life-threatening infections. The majority of SCN cases arise because of germline mutations in the gene elastase, neutrophil-expressed (ELANE) encoding the neutrophil granule serine protease neutrophil elastase. Treatment with a high dose of granulocyte colony-stimulating factor increases neutrophil production and reduces infection risk. How ELANE mutations produce SCN remains unknown. The currently proposed mechanism is that ELANE mutations promote protein misfolding, resulting in endoplasmic reticulum stress and activation of the unfolded protein response (UPR), triggering death of neutrophil precursors and resulting in neutropenia. Here we studied the ELANE mutation p.G185R, often associated with greater clinical severity (e.g. decreased responsiveness to granulocyte colony-stimulating factor and increased leukemogenesis). Using an inducible expression system, we observed that this ELANE mutation diminishes enzymatic activity and granulocytic differentiation without significantly affecting cell proliferation, cell death, or UPR induction in murine myeloblast 32D and human promyelocytic NB4 cells. Impaired differentiation was associated with decreased expression of genes encoding critical hematopoietic transcription factors (Gfi1, Cebpd, Cebpe, and Spi1), cell surface proteins (Csf3r and Gr1), and neutrophil granule proteins (Mpo and Elane). Together, these findings challenge the currently prevailing model that SCN results from mutant ELANE, which triggers endoplasmic reticulum stress, UPR, and apoptosis.
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Affiliation(s)
- Bhavuk Garg
- Department of Pediatrics, Cleveland Clinic, Cleveland, Ohio 44195; Department of Cancer Biology, Cleveland Clinic, Cleveland, Ohio 44195; Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, Ohio 44195
| | - Hrishikesh M Mehta
- Department of Pediatrics, Cleveland Clinic, Cleveland, Ohio 44195; Department of Cancer Biology, Cleveland Clinic, Cleveland, Ohio 44195; Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, Ohio 44195
| | - Borwyn Wang
- Department of Pediatrics, Cleveland Clinic, Cleveland, Ohio 44195; Department of Cancer Biology, Cleveland Clinic, Cleveland, Ohio 44195; Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, Ohio 44195
| | - Ralph Kamel
- Department of Pediatrics, Virginia Commonwealth University School of Medicine, Richmond, Virginia 23298
| | - Marshall S Horwitz
- Department of Pathology, University of Washington School of Medicine, Seattle, Washington 98195
| | - Seth J Corey
- Department of Pediatrics, Cleveland Clinic, Cleveland, Ohio 44195; Department of Cancer Biology, Cleveland Clinic, Cleveland, Ohio 44195; Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, Ohio 44195.
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Karmakar M, Minns M, Greenberg EN, Diaz-Aponte J, Pestonjamasp K, Johnson JL, Rathkey JK, Abbott DW, Wang K, Shao F, Catz SD, Dubyak GR, Pearlman E. N-GSDMD trafficking to neutrophil organelles facilitates IL-1β release independently of plasma membrane pores and pyroptosis. Nat Commun 2020; 11:2212. [PMID: 32371889 PMCID: PMC7200749 DOI: 10.1038/s41467-020-16043-9] [Citation(s) in RCA: 241] [Impact Index Per Article: 60.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 04/01/2020] [Indexed: 02/06/2023] Open
Abstract
Gasdermin-D (GSDMD) in inflammasome-activated macrophages is cleaved by caspase-1 to generate N-GSDMD fragments. N-GSDMD then oligomerizes in the plasma membrane (PM) to form pores that increase membrane permeability, leading to pyroptosis and IL-1β release. In contrast, we report that although N-GSDMD is required for IL-1β secretion in NLRP3-activated human and murine neutrophils, N-GSDMD does not localize to the PM or increase PM permeability or pyroptosis. Instead, biochemical and microscopy studies reveal that N-GSDMD in neutrophils predominantly associates with azurophilic granules and LC3+ autophagosomes. N-GSDMD trafficking to azurophilic granules causes leakage of neutrophil elastase into the cytosol, resulting in secondary cleavage of GSDMD to an alternatively cleaved N-GSDMD product. Genetic analyses using ATG7-deficient cells indicate that neutrophils secrete IL-1β via an autophagy-dependent mechanism. These findings reveal fundamental differences in GSDMD trafficking between neutrophils and macrophages that underlie neutrophil-specific functions during inflammasome activation.
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Affiliation(s)
- Mausita Karmakar
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, OH, USA
| | - Martin Minns
- Department of Physiology and Biophysics, and the Department of Ophthalmology, University of California, Irvine, CA, USA
| | - Elyse N Greenberg
- Department of Physiology and Biophysics, and the Department of Ophthalmology, University of California, Irvine, CA, USA
| | - Jose Diaz-Aponte
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, OH, USA
| | | | | | - Joseph K Rathkey
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Derek W Abbott
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Kun Wang
- National Institute of Biological Sciences, Beijing, China
| | - Feng Shao
- National Institute of Biological Sciences, Beijing, China
| | | | - George R Dubyak
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, OH, USA.
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA.
| | - Eric Pearlman
- Department of Physiology and Biophysics, and the Department of Ophthalmology, University of California, Irvine, CA, USA.
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27
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Gordon RA, Tilstra JS, Marinov A, Nickerson KM, Bastacky SI, Shlomchik MJ. Murine lupus is neutrophil elastase-independent in the MRL.Faslpr model. PLoS One 2020; 15:e0226396. [PMID: 32243431 PMCID: PMC7122749 DOI: 10.1371/journal.pone.0226396] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 03/16/2020] [Indexed: 12/18/2022] Open
Abstract
Loss of tolerance to nuclear antigens and multisystem tissue destruction is a hallmark of systemic lupus erythematosus (SLE). Although the source of autoantigen in lupus remains elusive, a compelling hypothetical source is dead cell debris that drives autoimmune activation. Prior reports suggest that neutrophil extracellular traps (NETs) and their associated death pathway, NETosis, are sources of autoantigen in SLE. However, others and we have shown that inhibition of NETs by targeting the NADPH oxidase complex and peptidylarginine deiminase 4 (PADI4) did not ameliorate disease in spontaneous murine models of SLE. Furthermore, myeloperoxidase and PADI4 deletion did not inhibit induced lupus. Since NET formation may occur independently of any one mediator, to address this controversy, we genetically deleted an additional important mediator of NETs and neutrophil effector function, neutrophil elastase (ELANE), in the MRL.Faslpr model of SLE. ELANE deficiency, and by extension ELANE-dependent NETs, had no effect on SLE nephritis, dermatitis, anti-self response, or immune composition in MRL.Faslpr mice. Taken together with prior data from our group and others, these data further challenge the paradigm that NETs and neutrophils are pathogenic in SLE.
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Affiliation(s)
- Rachael A. Gordon
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Jeremy S. Tilstra
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Anthony Marinov
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Kevin M. Nickerson
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Sheldon I. Bastacky
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Mark J. Shlomchik
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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Ahmad S, Singh P, Sharma A, Arora S, Shriwash N, Rahmani AH, Almatroodi SA, Manda K, Dohare R, Syed MA. Transcriptome Meta-Analysis Deciphers a Dysregulation in Immune Response-Associated Gene Signatures during Sepsis. Genes (Basel) 2019; 10:genes10121005. [PMID: 31817302 PMCID: PMC6947644 DOI: 10.3390/genes10121005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 11/28/2019] [Accepted: 12/02/2019] [Indexed: 12/20/2022] Open
Abstract
Sepsis is a life-threatening disease induced by a systemic inflammatory response, which leads to organ dysfunction and mortality. In sepsis, the host immune response is depressed and unable to cope with infection; no drug is currently available to treat this. The lungs are frequently the starting point for sepsis. This study aimed to identify potential genes for diagnostics and therapeutic purposes in sepsis by a comprehensive bioinformatics analysis. Our criteria are to unravel sepsis-associated signature genes from gene expression datasets. Differentially expressed genes (DEGs) were identified from samples of sepsis patients using a meta-analysis and then further subjected to functional enrichment and protein‒protein interaction (PPI) network analysis for examining their potential functions. Finally, the expression of the topmost upregulated genes (ARG1, IL1R2, ELANE, MMP9) was quantified by reverse transcriptase-PCR (RT-PCR), and myeloperoxidase (MPO) expression was confirmed by immunohistochemistry (IHC) staining in the lungs of a well-established sepsis mouse model. We found that all the four genes were upregulated in semiquantitative RT-PCR studies; however, MMP9 showed a nonsignificant increase in expression. MPO staining showed strong immunoreactivity in sepsis as compared to the control. This study demonstrates the role of significant and widespread immune activation (IL1R2, MMP9), along with oxidative stress (ARG1) and the recruitment of neutrophils, in sepsis (ELANE, MPO).
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Affiliation(s)
- Shaniya Ahmad
- Translational Research Lab, Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India; (S.A.); (A.S.); (S.A.)
| | - Prithvi Singh
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India;
| | - Archana Sharma
- Translational Research Lab, Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India; (S.A.); (A.S.); (S.A.)
| | - Shweta Arora
- Translational Research Lab, Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India; (S.A.); (A.S.); (S.A.)
| | - Nitesh Shriwash
- Department of Computer Science, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India;
| | - Arshad Husain Rahmani
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah 51452, Saudi Arabia; (A.H.R.); (S.A.A.)
| | - Saleh A. Almatroodi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah 51452, Saudi Arabia; (A.H.R.); (S.A.A.)
| | - Kailash Manda
- Institute of Nuclear Medicine and Applied Sciences, Defence Research Development Organization, New Delhi 110054, India;
| | - Ravins Dohare
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India;
- Correspondence: (R.D.); (M.A.S.); Tel.: +91-817-887-5779 (R.D.); +91-995-378-6440 (M.A.S.)
| | - Mansoor Ali Syed
- Translational Research Lab, Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India; (S.A.); (A.S.); (S.A.)
- Correspondence: (R.D.); (M.A.S.); Tel.: +91-817-887-5779 (R.D.); +91-995-378-6440 (M.A.S.)
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Liu H, Lessieur EM, Saadane A, Lindstrom SI, Taylor PR, Kern TS. Neutrophil elastase contributes to the pathological vascular permeability characteristic of diabetic retinopathy. Diabetologia 2019; 62:2365-2374. [PMID: 31612267 PMCID: PMC6866660 DOI: 10.1007/s00125-019-04998-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 07/31/2019] [Indexed: 12/22/2022]
Abstract
AIMS/HYPOTHESIS Levels of neutrophil elastase, a serine protease secreted by neutrophils, are elevated in diabetes. The purpose of this study was to determine whether neutrophil elastase (NE) contributes to the diabetes-induced increase in retinal vascular permeability in mice with streptozotocin-induced diabetes, and, if so, to investigate the potential role of IL-17 in this process. METHODS In vivo, diabetes was induced in neutrophil elastase-deficient (Elane-/-), Il-17a-/- and wild-type mice. After 8 months of diabetes, Elane-/- mice and wild-type age-matched control mice were injected with FITC-BSA. Fluorescence microscopy was used to assess leakage of FITC-BSA from the retinal vasculature into the neural retina. The level of NE in Il-17a-/- diabetic retina and sera were determined by ELISA. In vitro, the effect of NE on the permeability and viability of human retinal endothelial cells and the expression of junction proteins and adhesion molecules were studied. RESULTS Eight months of diabetes resulted in increased retinal vascular permeability and levels of NE in retina and plasma of wild-type animals. All of these abnormalities were significantly inhibited in mice lacking the elastase. The diabetes-induced increase in NE was inhibited in mice lacking IL-17. In vitro, NE increased retinal endothelial cell permeability, which was partially inhibited by a myeloid differentiation primary response 88 (MyD88) inhibitor, NF-κB inhibitor, and protease-activated receptor (PAR)2 inhibitor. NE degraded vascular endothelial-cadherin (VE-cadherin) in a concentration-dependent manner. CONCLUSIONS/INTERPRETATION IL-17 regulates NE expression in diabetes. NE contributes to vascular leakage in diabetic retinopathy, partially through activation of MyD88, NF-κB and PAR2 and degradation of VE-cadherin.
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Affiliation(s)
- Haitao Liu
- Department of Biology, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
- Department of Ophthalmology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, 116011, People's Republic of China
| | - Emma M Lessieur
- Center for Translational Vision Research, Department of Ophthalmology, Gavin Herbert Eye Institute, School of Medicine, University of California-Irvine, 829 Health Sciences Rd. Gillespie Neuroscience Research Facility, Room 2107, Irvine, CA, 92697, USA
| | - Aicha Saadane
- Center for Translational Vision Research, Department of Ophthalmology, Gavin Herbert Eye Institute, School of Medicine, University of California-Irvine, 829 Health Sciences Rd. Gillespie Neuroscience Research Facility, Room 2107, Irvine, CA, 92697, USA
| | - Sarah I Lindstrom
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Patricia R Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, OH, USA
- Veterans Administration Medical Center Research Service 151, Cleveland, OH, USA
| | - Timothy S Kern
- Center for Translational Vision Research, Department of Ophthalmology, Gavin Herbert Eye Institute, School of Medicine, University of California-Irvine, 829 Health Sciences Rd. Gillespie Neuroscience Research Facility, Room 2107, Irvine, CA, 92697, USA.
- Veterans Administration Medical Center Research Service 151, Cleveland, OH, USA.
- Veterans Administration Medical Center Research Service, Long Beach, CA, USA.
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Aota K, Kani K, Yamanoi T, Momota Y, Ninomiya M, Yumoto H, Azuma M. Management of tooth extraction in a patient with ELANE gene mutation-induced cyclic neutropenia: A case report. Medicine (Baltimore) 2019; 98:e17372. [PMID: 31574885 PMCID: PMC6775366 DOI: 10.1097/md.0000000000017372] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION Cyclic neutropenia (CyN) is a rare hematological disease, and patients with CyN often experience an early onset of severe periodontitis and are forced to undergo tooth extraction. Here, we report a case of a patient with CyN who showed different periodicity and oscillations of neutrophil count compared with her mother, despite sharing the same novel genetic mutation. PATIENT CONCERNS A 17-year-old Japanese girl who had been diagnosed with CyN shortly after birth presented to our hospital with a complaint of mobility of her teeth and gingivitis. Upon presentation, an intraoral examination was performed and revealed redness and swelling of the marginal and attached gingiva. Radiographs revealed extreme resorption of the alveolar bone and apical lesions in her mandibular lateral incisors. The patient's hematologic data demonstrated a lack of blood neutrophils (0/μL). The patient had no history of dental extraction, and her mother also had a history of CyN. DIAGNOSES The patient was diagnosed with severe periodontitis that was associated with CyN. Gene testing showed a novel heterozygous mutation in exon 4 of the ELANE gene (c.538delC, p.Leu180Ser fsX11). INTERVENTIONS Based on the clinical findings, we planned to extract the patient's mandibular lateral incisors. Although the tooth extraction was scheduled considering the cyclic variation in neutrophil count, the patient's neutrophil count was 0/μL on the day before the planned extraction. Therefore, granulocyte-colony stimulating factor (G-CSF) was administered to increase the patient's neutrophil count. On the day of the patient's admission for the tooth extraction, she presented with fever (body temperature, 38.5°C), tonsillitis, and stomatitis. The extraction was subsequently delayed, and the patient was administered antibiotics and G-CSF for 4 days. At this time, the neutrophil count increased to 750/μL, and the tooth extraction was carried out safely. OUTCOMES The postoperative course was uneventful, and the healing process at the extraction site was excellent. CONCLUSION There is a possibility that the periodicity and oscillations of neutrophil count may change with growth in patients with CyN. Therefore, it is important to frequently examine and treat patients with fluctuating neutrophil levels for the management of invasive dental treatment in patients with CyN.
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Affiliation(s)
| | | | | | | | - Masami Ninomiya
- Department of Periodontology and Endodontology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Hiromichi Yumoto
- Department of Periodontology and Endodontology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
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Hao W, Li M, Zhang Y, Zhang C, Xue Y. Expressions of MMP-12, TIMP-4, and Neutrophil Elastase in PBMCs and Exhaled Breath Condensate in Patients with COPD and Their Relationships with Disease Severity and Acute Exacerbations. J Immunol Res 2019; 2019:7142438. [PMID: 31143784 PMCID: PMC6501161 DOI: 10.1155/2019/7142438] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 02/27/2019] [Accepted: 03/03/2019] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE The purpose of this study was to compare matrix metalloproteinase-12 (MMP-12), neutrophil elastase (NE), and tissue inhibitor of metalloproteinase-4 (TIMP-4) in peripheral blood of patients with chronic obstructive pulmonary disease (COPD) and controls. At the same time, MMP-12, NE, and TIMP-4 in exhaled breath condensate (EBC) were also evaluated. METHODS Peripheral blood and EBC samples from COPD patients and healthy controls were collected. In serum and EBC, MMP-12, NE, and TIMP-4 proteins were detected by enzyme-linked immunoassays. The mRNA expression levels of MMP-12, NE, and TIMP-4 in peripheral blood mononuclear cells (PBMCs) were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR). RESULTS The concentration of TIMP-4 protein in EBC was lower in patients with COPD (P < 0.001). MMP-12 (P = 0.046), NE (P = 0.027), and TIMP-4 (P = 0.005) proteins in serum of patients with COPD showed higher levels of concentration. The mRNA of MMP-12 (P = 0.0067), NE (P = 0.0058), and TIMP-4 (P = 0.0006) in PBMCs of COPD patients showed higher expression levels. Compared with stable patients, mRNA expression level of NE (P = 0.033) in PBMCs of patients with acute exacerbation of COPD was increased. There were differences in the ratio of MMP-12/TIMP-4 in PBMC (P = 0.0055), serum (P = 0.0427), and EBC (P = 0.0035) samples between COPD patients and healthy controls. The mRNA expression of MMP-12 (r = -0.3958, P = 0.0186) and NE (r = -0.3694, P = 0.0290) in COPD patients was negatively correlated with pulmonary function. However, the mRNA expression of TIMP-4 (r = 0.2871, P = 0.0945) in PBMCs was not correlated with the FEV1 of the pulmonary function. Serum MMP-12 level was positively correlated with the MMP-12 level in EBC (P = 0.0387). The level of TIMP-4 in serum was not correlated with the level in the EBC sample (P = 0.4332). CONCLUSION The expression levels of MMP-12, NE, and TIMP-4 in PBMCs and serum were elevated in COPD patients. In PBMCs of COPD patients, the mRNA expression level of NE may predict acute exacerbation, and MMP-12 mRNA expression level may be used to reflect the severity of airflow limitation. However, to better assess their diagnostic or prognostic value, larger studies are necessary.
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Affiliation(s)
- Wendong Hao
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Yan'an University, Yan'an, 716099 Shaanxi, China
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061 Shaanxi, China
| | - Manxiang Li
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061 Shaanxi, China
| | - Yunqing Zhang
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Yan'an University, Yan'an, 716099 Shaanxi, China
| | - Cailian Zhang
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Yan'an University, Yan'an, 716099 Shaanxi, China
| | - Yani Xue
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Yan'an University, Yan'an, 716099 Shaanxi, China
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Wojdyla T, Mehta H, Glaubach T, Bertolusso R, Iwanaszko M, Braun R, Corey SJ, Kimmel M. Mutation, drift and selection in single-driver hematologic malignancy: Example of secondary myelodysplastic syndrome following treatment of inherited neutropenia. PLoS Comput Biol 2019; 15:e1006664. [PMID: 30615612 PMCID: PMC6336352 DOI: 10.1371/journal.pcbi.1006664] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 01/17/2019] [Accepted: 11/19/2018] [Indexed: 12/15/2022] Open
Abstract
Cancer development is driven by series of events involving mutations, which may become fixed in a tumor via genetic drift and selection. This process usually includes a limited number of driver (advantageous) mutations and a greater number of passenger (neutral or mildly deleterious) mutations. We focus on a real-world leukemia model evolving on the background of a germline mutation. Severe congenital neutropenia (SCN) evolves to secondary myelodysplastic syndrome (sMDS) and/or secondary acute myeloid leukemia (sAML) in 30–40%. The majority of SCN cases are due to a germline ELANE mutation. Acquired mutations in CSF3R occur in >70% sMDS/sAML associated with SCN. Hypotheses underlying our model are: an ELANE mutation causes SCN; CSF3R mutations occur spontaneously at a low rate; in fetal life, hematopoietic stem and progenitor cells expands quickly, resulting in a high probability of several tens to several hundreds of cells with CSF3R truncation mutations; therapeutic granulocyte colony-stimulating factor (G-CSF) administration early in life exerts a strong selective pressure, providing mutants with a growth advantage. Applying population genetics theory, we propose a novel two-phase model of disease development from SCN to sMDS. In Phase 1, hematopoietic tissues expand and produce tens to hundreds of stem cells with the CSF3R truncation mutation. Phase 2 occurs postnatally through adult stages with bone marrow production of granulocyte precursors and positive selection of mutants due to chronic G-CSF therapy to reverse the severe neutropenia. We predict the existence of the pool of cells with the mutated truncated receptor before G-CSF treatment begins. The model does not require increase in mutation rate under G-CSF treatment and agrees with age distribution of sMDS onset and clinical sequencing data. Cancer develops by multistep acquisition of mutations in a progenitor cell and its daughter cells. Severe congenital neutropenia (SCN) manifests itself through an inability to produce enough granulocytes to prevent infections. SCN commonly results from a germline ELANE mutation. Large doses of the blood growth factor granulocyte colony-stimulating factor (G-CSF) rescue granulocyte production. However, SCN frequently transforms to a myeloid malignancy, commonly associated with a somatic mutation in CSF3R, the gene encoding the G-CSF Receptor. We built a mathematical model of evolution for CSF3R mutation starting with bone marrow expansion at the fetal development stage and continuing with postnatal competition between normal and malignant bone marrow cells. We employ tools of probability theory such as multitype branching processes and Moran models modified to account for expansion of hematopoiesis during human development. With realistic coefficients, we obtain agreement with the age range at which malignancy arises in patients. In addition, our model predicts the existence of a pool of cells with mutated CSF3R before G-CSF treatment begins. Our findings may be clinically applied to intervene more effectively and selectively in SCN patients.
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Affiliation(s)
- Tomasz Wojdyla
- Systems Engineering Group, Silesian University of Technology, Gliwice, Poland
| | - Hrishikesh Mehta
- Department of Pediatrics, Cleveland Clinic, Cleveland, OH, United States of America
- Department of Cancer Biology, Cleveland Clinic, Cleveland, OH, United States of America
| | - Taly Glaubach
- Clinical Pediatrics, Division of Hospital Medicine, Stony Brook Children's Hospital, Stony Brook, New York
| | - Roberto Bertolusso
- Department of Statistics, Rice University, Houston, TX, United States of America
| | - Marta Iwanaszko
- Systems Engineering Group, Silesian University of Technology, Gliwice, Poland
- Department of Statistics, Rice University, Houston, TX, United States of America
- Department of Preventive Medicine–Division of Biostatistics, Northwestern University, Chicago, IL United States of America
| | - Rosemary Braun
- Department of Preventive Medicine–Division of Biostatistics, Northwestern University, Chicago, IL United States of America
- Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL United States of America
| | - Seth J. Corey
- Department of Pediatrics, Cleveland Clinic, Cleveland, OH, United States of America
- Department of Cancer Biology, Cleveland Clinic, Cleveland, OH, United States of America
- Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH, United States of America
| | - Marek Kimmel
- Systems Engineering Group, Silesian University of Technology, Gliwice, Poland
- Department of Statistics, Rice University, Houston, TX, United States of America
- Department of Bioengineering, Rice University, Houston, TX, United States of America
- * E-mail:
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Chen CY, Tsai YF, Huang WJ, Chang SH, Hwang TL. Propofol inhibits endogenous formyl peptide-induced neutrophil activation and alleviates lung injury. Free Radic Biol Med 2018; 129:372-382. [PMID: 30312762 DOI: 10.1016/j.freeradbiomed.2018.09.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 09/27/2018] [Accepted: 09/29/2018] [Indexed: 02/06/2023]
Abstract
Critically ill patients have a high risk of sepsis. Various studies have demonstrated that propofol has anti-inflammatory effects that may benefit critically ill patients who require anesthesia. However, the mechanism and therapeutic effect remain incompletely understood. Our previous data suggest that propofol can act as a formyl peptide receptor 1 (FPR1) antagonist. Here, we hypothesize that propofol mitigates sepsis-induced acute lung injury (ALI) by inhibiting mitochondria-derived N-formyl peptide-mediated neutrophil activation. Oxidative stress caused by activated neutrophils is involved in the pathogenesis of ALI. In human neutrophils, propofol competitively reduced the release of superoxide and associated reactive oxygen species induced by fMMYALF, a human mitochondria-derived N-formyl peptide, suggesting that propofol effectively suppresses neutrophilic oxidative stress. In addition, propofol significantly inhibited fMMYALF-induced elastase release, chemotaxis, calcium mobilization, and phosphorylation of protein kinase B and mitogen-activated protein kinases. These results indicate that propofol suppresses neutrophil activation by blocking the interaction between endogenous N-formyl peptide and its receptor, FPR1, thus inhibiting downstream signaling. Furthermore, propofol alleviated alveolar wall disruption, edematous changes, and neutrophil infiltration in lipopolysaccharide-induced ALI in mice. Noticeably, propofol improved the survival of sepsis mice. This study indicates that the anti-neutrophil effects of propofol may benefit critically ill septic patients.
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Affiliation(s)
- Chun-Yu Chen
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Yung-Fong Tsai
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Wei-Ju Huang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Shih-Hsin Chang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan.
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Chang S, Kim YH, Kim YJ, Kim YW, Moon S, Lee YY, Jung JS, Kim Y, Jung HE, Kim TJ, Cheong TC, Moon HJ, Cho JA, Kim HR, Han D, Na Y, Seok SH, Cho NH, Lee HC, Nam EH, Cho H, Choi M, Minato N, Seong SY. Taurodeoxycholate Increases the Number of Myeloid-Derived Suppressor Cells That Ameliorate Sepsis in Mice. Front Immunol 2018; 9:1984. [PMID: 30279688 PMCID: PMC6153344 DOI: 10.3389/fimmu.2018.01984] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 08/13/2018] [Indexed: 01/01/2023] Open
Abstract
Bile acids (BAs) control metabolism and inflammation by interacting with several receptors. Here, we report that intravenous infusion of taurodeoxycholate (TDCA) decreases serum pro-inflammatory cytokines, normalizes hypotension, protects against renal injury, and prolongs mouse survival during sepsis. TDCA increases the number of granulocytic myeloid-derived suppressor cells (MDSCLT) distinctive from MDSCs obtained without TDCA treatment (MDSCL) in the spleen of septic mice. FACS-sorted MDSCLT cells suppress T-cell proliferation and confer protection against sepsis when adoptively transferred better than MDSCL. Proteogenomic analysis indicated that TDCA controls chromatin silencing, alternative splicing, and translation of the immune proteome of MDSCLT, which increases the expression of anti-inflammatory molecules such as oncostatin, lactoferrin and CD244. TDCA also decreases the expression of pro-inflammatory molecules such as neutrophil elastase. These findings suggest that TDCA globally edits the proteome to increase the number of MDSCLT cells and affect their immune-regulatory functions to resolve systemic inflammation during sepsis.
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Affiliation(s)
- Sooghee Chang
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea
| | - Youn-Hee Kim
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - Young-Joo Kim
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea
- Wide River Institute of Immunology, Seoul National University, Seoul, South Korea
| | - Young-Woo Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
- Wide River Institute of Immunology, Seoul National University, Seoul, South Korea
| | - Sungyoon Moon
- Wide River Institute of Immunology, Seoul National University, Seoul, South Korea
| | - Yong Yook Lee
- Wide River Institute of Immunology, Seoul National University, Seoul, South Korea
| | - Jin Sun Jung
- Wide River Institute of Immunology, Seoul National University, Seoul, South Korea
| | - Youngsoo Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - Hi-Eun Jung
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - Tae-Joo Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - Taek-Chin Cheong
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - Hye-Jung Moon
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea
| | - Jung-Ah Cho
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea
- Wide River Institute of Immunology, Seoul National University, Seoul, South Korea
| | - Hang-Rae Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
- Department of Anatomy, Seoul National University College of Medicine, Seoul, South Korea
| | - Dohyun Han
- Biomedical Research Institute, Seoul National University Hospital, Seoul, South Korea
| | - Yirang Na
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea
- Biomedical Research Institute, Seoul National University Hospital, Seoul, South Korea
| | - Seung-Hyeok Seok
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea
- Biomedical Research Institute, Seoul National University Hospital, Seoul, South Korea
| | - Nam-Hyuk Cho
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
- Wide River Institute of Immunology, Seoul National University, Seoul, South Korea
| | - Hai-Chon Lee
- Wide River Institute of Immunology, Seoul National University, Seoul, South Korea
| | - Eun-Hee Nam
- Wide River Institute of Immunology, Seoul National University, Seoul, South Korea
| | - Hyosuk Cho
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - Murim Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - Nagahiro Minato
- Department of Immunology and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Seung-Yong Seong
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
- Wide River Institute of Immunology, Seoul National University, Seoul, South Korea
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Abstract
BACKGROUND Cyclic neutropenia (CyN) is a rare hematological disease. Herein, a CyN girl, aged 3 years and 2 months, with recurrent fever and oral mucosal ulcer caused by neutrophil elastase (ELANE) gene mutation is reported. CASE PRESENTATION A 3 years and 2 months old girl presented with recurrent fever and oral mucosal ulcer for 1 year. Routine blood test revealed that her absolute neutrophil count repeatedly decreased (minimum 0. 04 × 10/L) every 21 days on an average. Gene testing showed that the patient suffered from ELANE gene heterozygous mutation (c.197T>G) (exon2) (p.M66R). She was finally diagnosed as CyN. The patient's symptoms were relieved after infection prevention and treatment as well as granulocyte-colony stimulating factor (G-CSF) therapy. Her condition continues to remain stable. CONCLUSION Active prevention and treatment of infection as well as G-CSF therapy can successfully control CyN.
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Abstract
Severe congenital neutropenias are a heterogeneous group of rare haematological diseases characterized by impaired maturation of neutrophil granulocytes. Patients with severe congenital neutropenia are prone to recurrent, often life-threatening infections beginning in their first months of life. The most frequent pathogenic defects are autosomal dominant mutations in ELANE, which encodes neutrophil elastase, and autosomal recessive mutations in HAX1, whose product contributes to the activation of the granulocyte colony-stimulating factor (G-CSF) signalling pathway. The pathophysiological mechanisms of these conditions are the object of extensive research and are not fully understood. Furthermore, severe congenital neutropenias may predispose to myelodysplastic syndromes or acute myeloid leukaemia. Molecular events in the malignant progression include acquired mutations in CSF3R (encoding G-CSF receptor) and subsequently in other leukaemia-associated genes (such as RUNX1) in a majority of patients. Diagnosis is based on clinical manifestations, blood neutrophil count, bone marrow examination and genetic and immunological analyses. Daily subcutaneous G-CSF administration is the treatment of choice and leads to a substantial increase in blood neutrophil count, reduction of infections and drastic improvement of quality of life. Haematopoietic stem cell transplantation is the alternative treatment. Regular clinical assessments (including yearly bone marrow examinations) to monitor treatment course and detect chromosomal abnormalities (for example, monosomy 7 and trisomy 21) as well as somatic pre-leukaemic mutations are recommended.
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Affiliation(s)
- Julia Skokowa
- Department of Hematology, Oncology, Clinical Immunology, University of Tübingen, Tübingen, Germany
| | - David C Dale
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Ivo P Touw
- Department of Hematology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Cornelia Zeidler
- Department of Hematology and Oncology, Medical School Hannover, Hannover, Germany
| | - Karl Welte
- University Children's Hospital, Department of General Pediatrics and Pediatric Hematology and Oncology, Hoppe-Seyler-Str. 1, Tübingen 72076, Germany
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Zhao WH, Hua Y, Sun Q. [A case of severe congential neutropenia induced by ELA2 gene mutation]. Zhonghua Er Ke Za Zhi 2017; 55:468-469. [PMID: 28592017 DOI: 10.3760/cma.j.issn.0578-1310.2017.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Dai R, Cowan C, Heid B, Khan D, Liang Z, Pham CTN, Ahmed SA. Neutrophils and neutrophil serine proteases are increased in the spleens of estrogen-treated C57BL/6 mice and several strains of spontaneous lupus-prone mice. PLoS One 2017; 12:e0172105. [PMID: 28192517 PMCID: PMC5305105 DOI: 10.1371/journal.pone.0172105] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 01/31/2017] [Indexed: 12/22/2022] Open
Abstract
Estrogen, a natural immunomodulator, regulates the development and function of diverse immune cell types. There is now renewed attention on neutrophils and neutrophil serine proteases (NSPs) such as neutrophil elastase (NE), proteinase 3 (PR3), and cathepsin G (CG) in inflammation and autoimmunity. In this study, we found that although estrogen treatment significantly reduced total splenocytes number, it markedly increased the splenic neutrophil absolute numbers in estrogen-treated C57BL/6 (B6) mice when compared to placebo controls. Concomitantly, the levels of NSPs and myeloperoxidase (MPO) were highly upregulated in the splenocytes from estrogen-treated mice. Despite the critical role of NSPs in the regulation of non-infectious inflammation, by employing NE-/-/PR3-/-/CG-/- triple knock out mice, we demonstrated that the absence of NSPs affected neither estrogen’s ability to increase splenic neutrophils nor the induction of inflammatory mediators (IFNγ, IL-1β, IL-6, TNFα, MCP-1, and NO) from ex vivo activated splenocytes. Depletion of neutrophils in vitro in splenocytes with anti-Ly6G antibody also had no obvious effect on NSP expression or LPS-induced IFNγ and MCP-1. These data suggest that estrogen augments NSPs, which appears to be independent of enhancing ex vivo inflammatory responses. Since estrogen has been implicated in regulating several experimental autoimmune diseases, we extended our observations in estrogen-treated B6 mice to spontaneous autoimmune-prone female MRL-lpr, B6-lpr and NZB/WF1 mice. There was a remarkable commonality with regards to the increase of neutrophils and concomitant increase of NSPs and MPO in the splenic cells of different strains of autoimmune-prone mice and estrogen-treated B6 mice. Collectively, since NSPs and neutrophils are involved in diverse pro-inflammatory activities, these data suggest a potential pathologic implication of increased neutrophils and NSPs that merits further investigation.
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Affiliation(s)
- Rujuan Dai
- Infectious Disease Research Facility (IDRF), Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine (VMCVM), Virginia Tech, Blacksburg, Virginia, United States of America
| | - Catharine Cowan
- Infectious Disease Research Facility (IDRF), Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine (VMCVM), Virginia Tech, Blacksburg, Virginia, United States of America
| | - Bettina Heid
- Infectious Disease Research Facility (IDRF), Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine (VMCVM), Virginia Tech, Blacksburg, Virginia, United States of America
| | - Deena Khan
- Infectious Disease Research Facility (IDRF), Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine (VMCVM), Virginia Tech, Blacksburg, Virginia, United States of America
| | - Zhihong Liang
- Infectious Disease Research Facility (IDRF), Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine (VMCVM), Virginia Tech, Blacksburg, Virginia, United States of America
| | - Christine T. N. Pham
- Department of Medicine, Division of Rheumatology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - S. Ansar Ahmed
- Infectious Disease Research Facility (IDRF), Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine (VMCVM), Virginia Tech, Blacksburg, Virginia, United States of America
- * E-mail:
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Wiesmeier M, Gautam S, Kirschnek S, Häcker G. Characterisation of Neutropenia-Associated Neutrophil Elastase Mutations in a Murine Differentiation Model In Vitro and In Vivo. PLoS One 2016; 11:e0168055. [PMID: 27942017 PMCID: PMC5152902 DOI: 10.1371/journal.pone.0168055] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/24/2016] [Indexed: 11/19/2022] Open
Abstract
Severe congenital neutropenia (SCN) is characterised by a differentiation block in the bone marrow and low neutrophil numbers in the peripheral blood, which correlates with increased risk of bacterial infections. Several underlying gene defects have been identified in SCN patients. Mutations in the neutrophil elastase (ELANE) gene are frequently found in SCN and cyclic neutropenia. Both mislocalization and misfolding of mutant neutrophil elastase protein resulting in ER stress and subsequent induction of the unfolded protein response (UPR) have been proposed to be responsible for neutrophil survival and maturation defects. However, the detailed molecular mechanisms still remain unclear, in part due to the lack of appropriate in vitro and in vivo models. Here we used a system of neutrophil differentiation from immortalised progenitor lines by conditional expression of Hoxb8, permitting the generation of mature near-primary neutrophils in vitro and in vivo. NE-deficient Hoxb8 progenitors were reconstituted with murine and human forms of typical NE mutants representative of SCN and cyclic neutropenia, and differentiation of the cells was analysed in vitro and in vivo. ER stress induction by NE mutations could be recapitulated during neutrophil differentiation in all NE mutant-reconstituted Hoxb8 cells. Despite ER stress induction, no change in survival, maturation or function of differentiating cells expressing either murine or human NE mutants was observed. Further analysis of in vivo differentiation of Hoxb8 cells in a murine model of adoptive transfer did not reveal any defects in survival or differentiation in the mouse. Although the Hoxb8 system has been found to be useful for dissection of defects in neutrophil development, our findings indicate that the use of murine systems for analysis of NE-mutation-associated pathogenesis is complicated by differences between humans and mice in the physiology of granulopoiesis, which may go beyond possible differences in expression and activity of neutrophil elastase itself.
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Affiliation(s)
- Michael Wiesmeier
- Institute for Medical Microbiology and Hygiene, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Sanjivan Gautam
- Institute for Medical Microbiology and Hygiene, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Susanne Kirschnek
- Institute for Medical Microbiology and Hygiene, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- * E-mail:
| | - Georg Häcker
- Institute for Medical Microbiology and Hygiene, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Kurz ARM, Pruenster M, Rohwedder I, Ramadass M, Schäfer K, Harrison U, Gouveia G, Nussbaum C, Immler R, Wiessner JR, Margraf A, Lim DS, Walzog B, Dietzel S, Moser M, Klein C, Vestweber D, Haas R, Catz SD, Sperandio M. MST1-dependent vesicle trafficking regulates neutrophil transmigration through the vascular basement membrane. J Clin Invest 2016; 126:4125-4139. [PMID: 27701149 DOI: 10.1172/jci87043] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 08/25/2016] [Indexed: 12/20/2022] Open
Abstract
Neutrophils need to penetrate the perivascular basement membrane for successful extravasation into inflamed tissue, but this process is incompletely understood. Recent findings have associated mammalian sterile 20-like kinase 1 (MST1) loss of function with a human primary immunodeficiency disorder, suggesting that MST1 may be involved in immune cell migration. Here, we have shown that MST1 is a critical regulator of neutrophil extravasation during inflammation. Mst1-deficient (Mst1-/-) neutrophils were unable to migrate into inflamed murine cremaster muscle venules, instead persisting between the endothelium and the basement membrane. Mst1-/- neutrophils also failed to extravasate from gastric submucosal vessels in a murine model of Helicobacter pylori infection. Mechanistically, we observed defective translocation of VLA-3, VLA-6, and neutrophil elastase from intracellular vesicles to the surface of Mst1-/- neutrophils, indicating that MST1 is required for this crucial step in neutrophil transmigration. Furthermore, we found that MST1 associates with the Rab27 effector protein synaptotagmin-like protein 1 (JFC1, encoded by Sytl1 in mice), but not Munc13-4, thereby regulating the trafficking of Rab27-positive vesicles to the cellular membrane. Together, these findings highlight a role for MST1 in vesicle trafficking and extravasation in neutrophils, providing an additional mechanistic explanation for the severe immune defect observed in patients with MST1 deficiency.
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Di Francesco A, Di Germanio C, Panda AC, Huynh P, Peaden R, Navas-Enamorado I, Bastian P, Lehrmann E, Diaz-Ruiz A, Ross D, Siegel D, Martindale JL, Bernier M, Gorospe M, Abdelmohsen K, de Cabo R. Novel RNA-binding activity of NQO1 promotes SERPINA1 mRNA translation. Free Radic Biol Med 2016; 99:225-233. [PMID: 27515817 PMCID: PMC5107118 DOI: 10.1016/j.freeradbiomed.2016.08.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 07/31/2016] [Accepted: 08/07/2016] [Indexed: 12/21/2022]
Abstract
NAD(P)H: quinone oxidoreductase (NQO1) is essential for cell defense against reactive oxidative species, cancer, and metabolic stress. Recently, NQO1 was found in ribonucleoprotein (RNP) complexes, but NQO1-interacting mRNAs and the functional impact of such interactions are not known. Here, we used ribonucleoprotein immunoprecipitation (RIP) and microarray analysis to identify comprehensively the subset of NQO1 target mRNAs in human hepatoma HepG2 cells. One of its main targets, SERPINA1 mRNA, encodes the serine protease inhibitor α-1-antitrypsin, A1AT, which is associated with disorders including obesity-related metabolic inflammation, chronic obstructive pulmonary disease (COPD), liver cirrhosis and hepatocellular carcinoma. Biotin pulldown analysis indicated that NQO1 can bind the 3' untranslated region (UTR) and the coding region (CR) of SERPINA1 mRNA. NQO1 did not affect SERPINA1 mRNA levels; instead, it enhanced the translation of SERPINA1 mRNA, as NQO1 silencing decreased the size of polysomes forming on SERPINA1 mRNA and lowered the abundance of A1AT. Luciferase reporter analysis further indicated that NQO1 regulates SERPINA1 mRNA translation through the SERPINA1 3'UTR. Accordingly, NQO1-KO mice had reduced hepatic and serum levels of A1AT and increased activity of neutrophil elastase (NE), one of the main targets of A1AT. We propose that this novel mechanism of action of NQO1 as an RNA-binding protein may help to explain its pleiotropic biological effects.
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Affiliation(s)
- Andrea Di Francesco
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Clara Di Germanio
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Amaresh C Panda
- RNA Regulation Section, Laboratory of Genetics and Genomics, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Phu Huynh
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Robert Peaden
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Ignacio Navas-Enamorado
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Paul Bastian
- RNA Regulation Section, Laboratory of Genetics and Genomics, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Elin Lehrmann
- RNA Regulation Section, Laboratory of Genetics and Genomics, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Alberto Diaz-Ruiz
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - David Ross
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Anschutz Medical Campus, 12858 East Montview Blvd., Aurora, CO 80045, USA
| | - David Siegel
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Anschutz Medical Campus, 12858 East Montview Blvd., Aurora, CO 80045, USA
| | - Jennifer L Martindale
- RNA Regulation Section, Laboratory of Genetics and Genomics, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Michel Bernier
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Myriam Gorospe
- RNA Regulation Section, Laboratory of Genetics and Genomics, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA
| | - Kotb Abdelmohsen
- RNA Regulation Section, Laboratory of Genetics and Genomics, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA.
| | - Rafael de Cabo
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, 251 Bayview Blvd., Suite 100, Baltimore, MD 21224, USA.
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Martinod K, Witsch T, Farley K, Gallant M, Remold-O’Donnell E, Wagner DD. Neutrophil elastase-deficient mice form neutrophil extracellular traps in an experimental model of deep vein thrombosis. J Thromb Haemost 2016; 14:551-8. [PMID: 26712312 PMCID: PMC4785059 DOI: 10.1111/jth.13239] [Citation(s) in RCA: 139] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Indexed: 12/12/2022]
Abstract
UNLABELLED ESSENTIALS: Neutrophil elastase (NE) plays a role in extracellular trap formation (NETosis) triggered by microbes. The contribution of NE was evaluated in mouse NETosis models of sterile inflammation and thrombosis. NE is not required for mouse neutrophil NET production in vitro with non-infectious stimuli. NE deficiency had no significant effect on thrombosis in the inferior vena cava stenosis model. SUMMARY BACKGROUND Neutrophil serine proteases have been implicated in coagulation and neutrophil extracellular trap (NET) formation. In human neutrophils, neutrophil elastase (NE) translocates to the nucleus during NETosis and cleaves histones, thus aiding in chromatin decondensation. NE(-/-) mice were shown not to release NETs in response to microbes. However, mouse studies evaluating the role of NE in NET formation in sterile inflammation and thrombosis are lacking. OBJECTIVE We wished to establish if neutrophils from NE(-/-) mice have a defect in NETosis, similar to peptidylarginine deiminase 4 (PAD4(-/-)) mice, and how this might have an impact on venous thrombosis, a model where NETs are produced and are crucial to thrombus development. METHODS We performed in vitro NET assays using neutrophils from wild-type (WT), NE(-/-), SerpinB1 (SB1)(-/-) and NE(-/-) SB1(-/-) mice. We compared WT and NE(-/-) animals using the inferior vena cava stenosis model of deep vein thrombosis (DVT). RESULTS Neutrophil elastase deficiency resulted in a small reduction in ionomycin-induced NET formation in vitro without affecting histone citrullination. However, NET production in response to phorbol 12-myristate 13-acetate or platelet activating factor was normal in neutrophils from two independent NE-deficient mouse lines, and in NE(-/-) SB1(-/-) as compared with SB1(-/-) neutrophils. NE deficiency or inhibition did not prevent NETosis in vivo or DVT outcome. CONCLUSIONS Neutrophil elastase is not required for NET formation in mice. NE(-/-) mice, which form pathological venous thrombi containing NETs, do not phenocopy PAD4(-/-) mice in in vitro NETosis assays or experimental venous thrombosis. Our study suggests that NET-targeted therapies need to be highly effective to have an impact on DVT.
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Affiliation(s)
- Kimberly Martinod
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Thilo Witsch
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Kalamo Farley
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Maureen Gallant
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA
| | - Eileen Remold-O’Donnell
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
- Division of Hematology/Oncology, Boston Children’s Hospital, Boston, Massachusetts, USA
| | - Denisa D. Wagner
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
- Division of Hematology/Oncology, Boston Children’s Hospital, Boston, Massachusetts, USA
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Chen Z, Shao X, Dou X, Zhang X, Wang Y, Zhu C, Hao C, Fan M, Ji W, Yan Y. Role of the Mycoplasma pneumoniae/Interleukin-8/Neutrophil Axis in the Pathogenesis of Pneumonia. PLoS One 2016; 11:e0146377. [PMID: 26752656 PMCID: PMC4708980 DOI: 10.1371/journal.pone.0146377] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Accepted: 12/16/2015] [Indexed: 12/25/2022] Open
Abstract
Neutrophil infiltration is the characteristic pathological feature of M. pneumoniae pneumonia (MPP). This study aimed to explore the associations among neutrophil activity, clinical presentation, and role of the M. pneumoniae/interleukin-8 (IL-8)/neutrophil axis in the pathogenesis of MPP. A total of 42 patients with MPP were prospectively enrolled in the study. Neutrophil activity, including matrix metalloproteinase-9 (MMP-9), myeloperoxidase (MPO), and neutrophil elastase (NE), were measured. Clinical information was collected for all patients and control group. In vitro, IL-8 production was measured at different time points after M. pneumoniae infection of bronchial epithelial cells, and neutrophil activity was analyzed after IL-8 stimulation. The percentage of neutrophil in the bronchoalveolar lavage fluid was higher in the group of patients with high levels of M. pneumoniae DNA than in those with low levels of M. pneumoniae DNA (P < 0.05). IL-8, MMP-9, and NE in patients with MPP significantly increased compared with controls and decreased after treatment (P < 0.05). MPO and MMP-9 were associated with duration of fever (r = 0.332, P < 0.05) and length of stay (r = 0.342, P < 0.05), respectively. In vitro, M. pneumoniae induced IL-8 production by bronchial epithelial cells in a time dependent manner. MPO, MMP-9 and NE production by neutrophils significantly increased compared with medium controls after IL-8 stimulation. In summary, the M. pneumoniae/IL-8/neutrophil axis likely plays a vital role in the pathogenesis of MPP.
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Affiliation(s)
- Zhengrong Chen
- Department of Respiratory Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Xuejun Shao
- Department of Clinical Laboratory, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Xunwu Dou
- Department of Ophthalmology and Otorhinolaryngology, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Xinxing Zhang
- Department of Respiratory Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Yuqing Wang
- Department of Respiratory Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Canhong Zhu
- Department of Respiratory Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Chuangli Hao
- Department of Respiratory Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Mingyue Fan
- Department of Ophthalmology and Otorhinolaryngology, Children's Hospital of Soochow University, Soochow University, Suzhou, China
| | - Wei Ji
- Department of Respiratory Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
- * E-mail: (WJ); (YY)
| | - Yongdong Yan
- Department of Respiratory Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, China
- * E-mail: (WJ); (YY)
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Sayour EJ, Carter C, Eldjerou L. A novel ELANE gene mutation in a patient with severe congenital neutropenia and intermittent thrombocytopenia. Pediatr Blood Cancer 2015; 62:1870-1. [PMID: 25882539 DOI: 10.1002/pbc.25528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 03/05/2015] [Indexed: 11/08/2022]
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Nayak RC, Trump LR, Aronow BJ, Myers K, Mehta P, Kalfa T, Wellendorf AM, Valencia CA, Paddison PJ, Horwitz MS, Grimes HL, Lutzko C, Cancelas JA. Pathogenesis of ELANE-mutant severe neutropenia revealed by induced pluripotent stem cells. J Clin Invest 2015; 125:3103-16. [PMID: 26193632 DOI: 10.1172/jci80924] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 06/05/2015] [Indexed: 12/27/2022] Open
Abstract
Severe congenital neutropenia (SCN) is often associated with inherited heterozygous point mutations in ELANE, which encodes neutrophil elastase (NE). However, a lack of appropriate models to recapitulate SCN has substantially hampered the understanding of the genetic etiology and pathobiology of this disease. To this end, we generated both normal and SCN patient-derived induced pluripotent stem cells (iPSCs), and performed genome editing and differentiation protocols that recapitulate the major features of granulopoiesis. Pathogenesis of ELANE point mutations was the result of promyelocyte death and differentiation arrest, and was associated with NE mislocalization and activation of the unfolded protein response/ER stress (UPR/ER stress). Similarly, high-dose G-CSF (or downstream signaling through AKT/BCL2) rescues the dysgranulopoietic defect in SCN patient-derived iPSCs through C/EBPβ-dependent emergency granulopoiesis. In contrast, sivelestat, an NE-specific small-molecule inhibitor, corrected dysgranulopoiesis by restoring normal intracellular NE localization in primary granules; ameliorating UPR/ER stress; increasing expression of CEBPA, but not CEBPB; and promoting promyelocyte survival and differentiation. Together, these data suggest that SCN disease pathogenesis includes NE mislocalization, which in turn triggers dysfunctional survival signaling and UPR/ER stress. This paradigm has the potential to be clinically exploited to achieve therapeutic responses using lower doses of G-CSF combined with targeting to correct NE mislocalization.
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Jiang K, Ma P, Yang X, Zhong L, Wang H, Zhu X, Liu B. [Over-expression of neutrophil elastase promotes proliferation and inhibits apoptosis in K562 cells]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2015; 31:159-167. [PMID: 25652853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To establish recombinant adenovirus carrying human neutrophil elastase (NE) gene using AdEasy system, over-express NE in K562 cell line and observe the effects of NE on K562 cell proliferation and apoptosis. METHODS NE gene was amplified with RNA extracted from acute premyelocytic leukemia (APL) HL-60 cells as a template using reverse transcription-PCR. The coding sequence was cloned into shuttle plasmid pAdTrack-CMV to obtain the recombinant plasmid named pAd-NE. After digested with HindIII and EcoRV and sequenced, the pAd-NE was transformed to competent E.coli BJ5183 containing adenovirus backbone plasmid pAdEasy-1. The obtained recombinant adenovirus plasmid Ad-NE was digested with PacI and transfected into AD293 cells for packaging. Fourteen days later, primary recombinant adenovirus Ad-NE was harvested, and then subjected to five cycles of amplification, titer determination and PCR identification. K562 cells were infected by the recombinant adenovirus. The infection efficiency was observed under a fluorescence microscope and detected by flow cytometry. Western blotting was used to detect NE expression. The proliferation of K562 cells was detected by CCK-8 assay. Cell cycle and apoptosis was measured by annexin V/PI accompanied by flow cytometry. RESULTS HindIII and EcoRV digestion and sequencing suggested that the recombinant vector Ad-NE was successfully constructed. The recombinant plasmid Ad-NE was packaged in AD293 cells as expected. Following five-cycle amplification, the viral titer was up to 1.64 × 10¹² pfu/mL. GFP expression observed by fluorescence microscopy and flow cytometry implied that the infection efficiency of Ad-NE in K562 cells reached about 80%. Western blotting showed that NE expression was up-regulated in K562 cells. CCK-8 assay revealed that the proliferation of K562 cells over-expressing NE was enhanced. Meanwhile, flow cytometry indicated that the K562 cells were arrested in S phase and the apoptosis rate was highly reduced. CONCLUSION Over-expressed NE in K562 leukemia cells could promote cell proliferation, inhibit apoptosis and block cell cycle in S phase.
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Affiliation(s)
- Kailing Jiang
- Central Laboratory, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Pengpeng Ma
- Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Xiaoqun Yang
- Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Liang Zhong
- Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Hui Wang
- Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Xinyu Zhu
- Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Beizhong Liu
- Central Laboratory, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
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Abstract
Severe congenital neutropenia (SCN) is a genetically heterogeneous condition of bone marrow failure usually diagnosed in early childhood and characterized by a chronic and severe shortage of neutrophils. It is now well-established that mutations in HAX1 and ELANE (and more rarely in other genes) are the genetic cause of SCN. In contrast, it has remained unclear how these mutations affect neutrophil development. Innovative models based on induced pluripotent stem cell technology are being explored to address this issue. These days, most SCN patients receive life-long treatment with granulocyte colony-stimulating factor (G-CSF, CSF3). CSF3 therapy has greatly improved the life expectancy of SCN patients, but also unveiled a high frequency of progression toward myelodysplastic syndrome (MDS) and therapy refractory acute myeloid leukemia (AML). Expansion of hematopoietic clones with acquired mutations in the gene encoding the G-CSF receptor (CSF3R) is regularly seen in SCN patients and AML usually descends from one of these CSF3R mutant clones. These findings raised the questions how CSF3R mutations affect CSF3 responses of myeloid progenitors, how they contribute to the pre-leukemic state of SCN, and which additional events are responsible for progression to leukemia. The vast (sub)clonal heterogeneity of AML and the presence of AML-associated mutations in normally aged hematopoietic clones make it often difficult to determine which mutations are responsible for the leukemic process. Leukemia predisposition syndromes such as SCN are unique disease models to identify the sequential acquisition of these mutations and to interrogate how they contribute to clonal selection and leukemic evolution.
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Affiliation(s)
- Ivo P Touw
- Department of Hematology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
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Huebener P, Pradere JP, Hernandez C, Gwak GY, Caviglia JM, Mu X, Loike JD, Schwabe RF. The HMGB1/RAGE axis triggers neutrophil-mediated injury amplification following necrosis. J Clin Invest 2014; 125:539-50. [PMID: 25562324 DOI: 10.1172/jci76887] [Citation(s) in RCA: 275] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 11/13/2014] [Indexed: 12/25/2022] Open
Abstract
In contrast to microbially triggered inflammation, mechanisms promoting sterile inflammation remain poorly understood. Damage-associated molecular patterns (DAMPs) are considered key inducers of sterile inflammation following cell death, but the relative contribution of specific DAMPs, including high-mobility group box 1 (HMGB1), is ill defined. Due to the postnatal lethality of Hmgb1-knockout mice, the role of HMGB1 in sterile inflammation and disease processes in vivo remains controversial. Here, using conditional ablation strategies, we have demonstrated that epithelial, but not bone marrow-derived, HMGB1 is required for sterile inflammation following injury. Epithelial HMGB1, through its receptor RAGE, triggered recruitment of neutrophils, but not macrophages, toward necrosis. In clinically relevant models of necrosis, HMGB1/RAGE-induced neutrophil recruitment mediated subsequent amplification of injury, depending on the presence of neutrophil elastase. Notably, hepatocyte-specific HMGB1 ablation resulted in 100% survival following lethal acetaminophen intoxication. In contrast to necrosis, HMGB1 ablation did not alter inflammation or mortality in response to TNF- or FAS-mediated apoptosis. In LPS-induced shock, in which HMGB1 was considered a key mediator, HMGB1 ablation did not ameliorate inflammation or lethality, despite efficient reduction of HMGB1 serum levels. Our study establishes HMGB1 as a bona fide and targetable DAMP that selectively triggers a neutrophil-mediated injury amplification loop in the setting of necrosis.
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Kawaguch K, Matsubara K, Uchida Y, Saito A, Miyata K, Hasegawa D, Kosaka Y, Iwata A, Nigami H, Kobayashi M. [Successful treatment with allogenic hematopoietic stem cell transplantation of a severe congenital neutropenia patient harboring a novel ELANE mutation]. Rinsho Ketsueki 2014; 55:2294-2299. [PMID: 25501410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report a 4-year-old boy with severe congenital neutropenia (SCN), who was successfully treated with hematopoietic stem cell transplantation (HSCT). The patient had frequently developed bacterial infections since 6 months of age, and showed severe neutropenia below 100/μl at 1 year and 4 months of age. The patient harbored a heterozygous missense mutation in ELANE exon 3 (p.Q73P, g.2253 A>C). This was a novel de novo mutation, and he was thus diagnosed as having SCN. Because of failure to respond to granulocyte colony-stimulating factor treatment and repeated admissions due to bacterial infections, allogeneic HSCT was performed from a serologically matched unrelated donor following the conditioning regimen: fludarabine/melphalan/anti-thymocyte globulin and a low dose of total body irradiation. Tacrolimus and a short course of methotrexate were used for graft-versus-host disease prophylaxis. Engraftment was achieved at day 12, and the patient maintained normal hematopoiesis for over 15 months after HSCT. We concluded that HSCT is a useful treatment for SCN patients, especially those who are at high risk for leukemic transformation. However, a larger number of SCN patients and longer follow-up are necessary to identify appropriate conditioning regimens and long-term prognosis.
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Watanabe KI. [Application of disease-specific iPS cells for pathogenic analysis of congenital neutropenia]. Rinsho Ketsueki 2014; 55:2195-2201. [PMID: 25297787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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