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Gray CF. CORR Insights®: Neutrophil Extracellular Trap-related Biomarkers Are Increased in the Synovial Fluid of Patients With Periprosthetic Joint Infections. Clin Orthop Relat Res 2024; 482:734-736. [PMID: 38231019 PMCID: PMC10936967 DOI: 10.1097/corr.0000000000002971] [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: 11/13/2023] [Accepted: 12/07/2023] [Indexed: 01/18/2024]
Affiliation(s)
- Chancellor F Gray
- Orthopaedic Surgeon, Florida Orthopaedic Institute, Gainesville, FL, USA
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de Sandes Kimura O, Mozella A, Cobra H, Maciel Saraiva AC, Carvalho de Almendra Freitas EH, Cury Fernandes MB, Matheus Guimarães JA, Defino H, Leal AC. Neutrophil Extracellular Trap-related Biomarkers Are Increased in the Synovial Fluid of Patients With Periprosthetic Joint Infections. Clin Orthop Relat Res 2024; 482:727-733. [PMID: 37882792 PMCID: PMC10937003 DOI: 10.1097/corr.0000000000002891] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 03/24/2023] [Accepted: 09/15/2023] [Indexed: 10/27/2023]
Abstract
BACKGROUND The diagnosis of periprosthetic joint infection (PJI) is a major challenge in clinical practice. The role of neutrophils in fighting infection has been increasingly understood, and one mechanism of action of these cells is neutrophil extracellular traps. However, little is known about this process in PJI. QUESTIONS/PURPOSES (1) Are the biomarkers of neutrophil extracellular trap formation (citrullinated histone H3 [H3Cit], cell-free DNA [cf-DNA], and myeloperoxidase [MPO]) increased in the synovial fluid of patients with PJI? (2) What is the diagnostic accuracy of biomarkers of neutrophil extracellular trap formation for PJI? METHODS Between May 2020 and March 2021, 43 patients who underwent revision THA or TKA were enrolled in this study. Eleven patients were excluded and 32 patients were categorized into the PJI group (n = 16) or non-PJI group (n = 16) according to the 2018 Second International Consensus Meeting on Musculoskeletal Infection criteria. There were 15 men and 17 women in this study, with a median (range) age of 70 years (60 to 80 years). Twenty-seven patients had TKA and five had THA. We measured cf-DNA, MPO, and H3Cit in synovial fluid. The sensitivity, specificity, and receiver operating characteristic curve were calculated for each biomarker using the Musculoskeletal Infection Society criteria as the gold standard for diagnosis and considering a clinical surveillance of 2 years for patients in the non-PJI group. RESULTS Patients with PJI had higher levels of synovial fluid cf-DNA (median [range] 130 ng/µL [18 to 179] versus 2 ng/µL [0 to 6]; p < 0.001), MPO (1436 ng/µL [55 to 3996] versus 0 ng/µL [0 to 393]; p < 0.001), and H3Cit (2115 ng/µL [5 to 2885] versus 3 ng/µL [0 to 87]; p < 0.001) than those in the non-PJI group. In receiver operating characteristic curve analyses, we observed near-perfect performance for all biomarkers evaluated, with an area under the curve of 1 (95% CI 0.9 to 1), 0.98 (95% CI 0.9 to 1), and 0.94 (95% CI 0.8 to 0.99) for cf-DNA, MPO, and H3Cit, respectively. The sensitivity for detecting PJI using synovial fluid was 100% for cf-DNA, 94% for MPO, and 88% for H3Cit. The specificity was 100% for cf-DNA and MPO, and 88% for H3Cit. CONCLUSION Our results show that neutrophils in the periprosthetic microenvironment release neutrophil extracellular traps as part of the bactericidal arsenal to fight infection. These results allow a better understanding of the cellular and molecular processes that occur in this microenvironment, enabling the design of more assertive strategies for identifying new biomarkers and improving the available ones. Novel studies are needed to define whether and how neutrophil extracellular trap-related biomarkers can be useful for diagnosing PJI. LEVEL OF EVIDENCE Level II, diagnostic study.
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Affiliation(s)
- Osamu de Sandes Kimura
- Center for Surgery of Hip, National Institute of Traumatology and Orthopaedics, Rio de Janeiro, Brazil
| | - Alan Mozella
- Center for Surgery of Knee, National Institute of Traumatology and Orthopaedics, Rio de Janeiro, Brazil
| | - Hugo Cobra
- Center for Surgery of Knee, National Institute of Traumatology and Orthopaedics, Rio de Janeiro, Brazil
| | | | | | | | | | - Helton Defino
- Department of Orthopaedics and Anaesthesiology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Ana Carolina Leal
- Teaching and Research Division, National Institute of Traumatology and Orthopaedics, Rio de Janeiro, Brazil
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Liu F, Zhai Q. Expression level of neutrophil extracellular traps in peripheral blood of patients with chronic heart failure complicated with venous thrombosis and its clinical significance. J Cardiothorac Surg 2024; 19:129. [PMID: 38491551 PMCID: PMC10941499 DOI: 10.1186/s13019-024-02506-3] [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] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 01/18/2024] [Indexed: 03/18/2024] Open
Abstract
OBJECTIVE Previous studies have reported that neutrophil extracellular traps (NETs) have been identified to be involved in thrombosis, but the clinical value in chronic heart failure (CHF) patients with venous thrombosis is unclear. This study focused on the expression level of NETs in the peripheral blood of patients with CHF complicated with venous thrombosis and its clinical value. METHODS 80 patients with CHF were included and divided into 2 groups according to the occurrence of venous thrombosis, and the expression levels of NETs in peripheral venous blood and lesion veins of the patients were detected through fluorescent staining. Myeloperoxidase-DNA (MPO-DNA) and citrullinated histone H3 (CitH3), markers of NETs, were detected by enzyme linked immunosorbent assay kit. The receiver operating characteristic (ROC) curve was used to analyze the value of peripheral venous blood NETs in the diagnosis of venous thrombosis in CHF patients, while the relationship between NETs in peripheral and lesion veins was analyzed by a unitary linear regression model. RESULTS The results showed that the concentration of NETs, MPO-DNA, and CitH3 in CHF patients combined with venous thrombosis was markedly higher than that in patients without venous thrombosis, and the concentration of NETs, MPO-DNA, and CitH3 in lesion venous blood was notably higher than that in peripheral venous blood. Binary logistics regression analysis showed that NETs in peripheral venous blood were an independent risk factor for venous thrombosis in patients with heart failure. The unitary linear regression model fitted well, indicating a notable positive correlation between NETs concentrations in peripheral and lesion veins. The area under the ROC curve for diagnosing venous thrombosis was 0.85, indicating that peripheral blood NETs concentration levels could effectively predict venous thrombosis in CHF patients. CONCLUSION The expression level of NETs was high in the peripheral blood of CHF patients combined with venous thrombosis and was the highest in lesion venous blood. NETs levels in peripheral blood had the value of diagnosing venous thrombosis in CHF patients, and the concentrations of NETs in peripheral and lesion veins are markedly positively correlated.
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Affiliation(s)
- Fang Liu
- Medical Lab, The Second Affiliated Hospital of Xi'an Medical University, Xi'an, 710038, Shaanxi, China
| | - Qian Zhai
- Department of Blood test, Xi'an Blood Center, Shaanxi Blood Center, No.407 Zhuque Street, Yanta District, Xi'an, 710061, Shaanxi Province, China.
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Kelly EJ, Oliver MA, Carney BC, Kolachana S, Moffatt LT, Shupp JW. Neutrophil Extracellular Traps Are Induced by Coronavirus 2019 Disease-Positive Patient Plasma and Persist Longitudinally: A Possible Link to Endothelial Dysfunction as Measured by Syndecan-1. Surg Infect (Larchmt) 2023; 24:887-896. [PMID: 38011327 DOI: 10.1089/sur.2023.156] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2023] Open
Abstract
Background: Neutrophil extracellular trap (NET) formation is a mechanism that neutrophils possess to respond to host infection or inflammation. However, dysregulation of NETosis has been implicated in many disease processes. Although the exact mechanisms of their involvement remain largely unknown, this study aimed to elucidate NET formation over the time course of coronavirus disease 2019 (COVID-19) infection and their possible role in endothelial injury. Patients and Methods: Plasma samples from COVID-19-positive patients were obtained at six timepoints during hospitalization. Neutrophils were extracted from healthy donors and treated with COVID-19-positive patient plasma. Myeloperoxidase (MPO) assay was used to assess for NETosis. Syndecan-1 (SDC-1) enzyme-linked immunosorbent assay (ELISA) was run using the same samples. Immunocytochemistry allowed for further quantification of NETosis byproducts MPO and citrullinated histone 3 (CitH3). The receiver operating characteristic (ROC) curve discriminated between admission levels of SDC-1 and MPO in predicting 30-day mortality and need for ventilator support. Results: Sixty-three patients with COVID-19 were analyzed. Myeloperoxidase was upregulated at day 3, 7, and 14 (p = 0.0087, p = 0.0144, p = 0.0421). Syndecan-1 levels were elevated at day 7 and 14 (p = 0.0188, p = 0.0026). Neutrophils treated with day 3, 7, and 14 plasma expressed increased levels of MPO (p < 0.001). Immunocytochemistry showed neutrophils treated with day 3, 7, and 14 plasma expressed higher levels of MPO (p < 0.001) and higher levels of CitH3 when treated with day 7 and 14 plasma (p < 0.01 and p < 0.05). Admission SDC-1 and MPO levels were found to be independent predictors of 30-day mortality and need for ventilator support. Conclusions: Neutrophil dysregulation can be detrimental to the host. Our study shows that COVID-19 plasma induces substantial amounts of NET formation that persists over the course of the disease. Patients also exhibit increased SDC-1 levels that implicate endothelial injury in the pathogenesis of COVID-19 infection. Furthermore, MPO and SDC-1 plasma levels are predictive of poor outcomes.
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Affiliation(s)
- Edward J Kelly
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA
- The Burn Center, Department of Surgery, MedStar Washington Hospital Center, Washington, DC, USA
| | - Mary A Oliver
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA
| | - Bonnie C Carney
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA
- Department of Surgery and Biochemistry, Georgetown University School of Medicine, Washington, DC, USA
| | - Sindhura Kolachana
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA
| | - Lauren T Moffatt
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA
- Department of Surgery and Biochemistry, Georgetown University School of Medicine, Washington, DC, USA
| | - Jeffrey W Shupp
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA
- The Burn Center, Department of Surgery, MedStar Washington Hospital Center, Washington, DC, USA
- Department of Surgery and Biochemistry, Georgetown University School of Medicine, Washington, DC, USA
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Radermecker C, Marichal T. [Neutrophils and their DNA nets in inflammatory pulmonary diseases]. Rev Med Liege 2022; 77:271-276. [PMID: 35657182] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In 2004, a novel feature of neutrophil was discovered: their capacity to release Neutrophil Extracellular Traps or NETs. Since then, immunologists investigate these structures to unravel their functions in various diseases. In a first study, we demonstrated a main contribution of NETs, released by particular neutrophils, to allergic asthma onset triggered by three distinct pro-allergic environments in the mouse. In a second study, we observed NETs-enriched areas in lung biopsies of severe COVID-19 patients and characterized their locations. NETs were found in the airways, in the interstitium but also in blood vessels. These discoveries point out an important contribution of NETs to lung inflammatory diseases and suggest that NETs could be promising therapeutical targets in both allergic asthma prevention and in the severe forms of respiratory viral infections.
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Affiliation(s)
- C Radermecker
- Laboratoire d'Immunophysiologie GIGA-R, Faculté de Médecine Vétérinaire, ULiège, Belgique
| | - T Marichal
- Laboratoire d'Immunophysiologie GIGA-R, Faculté de Médecine Vétérinaire, ULiège, Belgique
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Yin H, Lu H, Xiong Y, Ye L, Teng C, Cao X, Li S, Sun S, Liu W, Lv W, Xin H. Tumor-Associated Neutrophil Extracellular Traps Regulating Nanocarrier-Enhanced Inhibition of Malignant Tumor Growth and Distant Metastasis. ACS Appl Mater Interfaces 2021; 13:59683-59694. [PMID: 34902970 DOI: 10.1021/acsami.1c18660] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Tumor-associated neutrophil extracellular traps (NETs) play a critical role in promoting tumor growth and assisting tumor metastasis. Herein, a smart nanocarrier (designated as mP-NPs-DNase/PTX) based on regulating tumor-associated NETs has been developed, which consists of a paclitaxel (PTX) prodrug nanoparticle core and a poly-l-lysine (PLL) conjugated with the matrix metalloproteinase 9 (MMP-9)-cleavable Tat-peptide-coupled deoxyribonuclease I (DNase I) shell. After accumulating at the site of the tumor tissue, the nanocarrier can release DNase I in response to MMP-9 to degrade the structure of NETs. Then, the remaining moiety can uptake the tumor cells via the mediation of exposed cell penetrating peptide, and the PTX prodrug nanoparticles will lyse in response to the high intracellular concentration of reduced glutathione to release PTX to exert a cytotoxic effect of tumor cells. Through in vitro and in vivo evaluations, it has been proven that mP-NPs-DNase/PTX could serve as potential NET-regulated nanocarrier for enhanced inhibition of malignant tumor growth and distant metastasis.
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Affiliation(s)
- Haoyuan Yin
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China
| | - Hongdan Lu
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Yaokun Xiong
- Department of Pharmaceutics, School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Lu Ye
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Chuanhui Teng
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Xiang Cao
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Shengnan Li
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Shanbo Sun
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Wentao Liu
- Department of Pharmacology, School of Basic Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Wei Lv
- Department of Pharmacy, The Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin 214400, China
| | - Hongliang Xin
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
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Kim SJ, Kim J, Kim B, Lee WW, Liu X, Chang YT, Park JW. Validation of CDr15 as a new dye for detecting neutrophil extracellular trap. Biochem Biophys Res Commun 2020; 527:646-653. [PMID: 32423806 DOI: 10.1016/j.bbrc.2020.04.153] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 04/30/2020] [Indexed: 02/01/2023]
Abstract
Neutrophil extracellular trap (NET) is one of the first-line defenses against microbes. Under certain circumstances, however, it also plays an aggravating factor in diverse inflammation-related diseases including cancers and vascular diseases. Our aim is to develop a new method to detect NET in cells and tissues using a DNA-specific fluorescence probe CDr15. CDr15 was characterized to be impermeable to the cell membranes and to emit a strong fluorescence in association with extracellular DNAs in NET. Due to these properties, CDr15 was successfully shown to quantify NETs in vitro and to be applicable for real-time monitoring NET formation in PMA-stimulated neutrophils. Even in formaldehyde-fixed tumor specimens, CDr15 could detect NETs spreading around cancer cells. Compared with DAPI and SYTOX DNA dyes, CDr15 showed a lower level of background fluorescence and a higher specificity in NET detection. Based on these results, we propose CDr15 as a novel marker of NET to be applicable in experimental and clinical studies.
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Affiliation(s)
- Sang-Jin Kim
- Department of Tumor Biology, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Pharmacology, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Ischemic/Hypoxic Disease Institute, and Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea
| | - Jiyoung Kim
- Department of Biomedical Sciences, BK21-plus Education Program, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Pharmacology, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Ischemic/Hypoxic Disease Institute, and Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea
| | - Bonah Kim
- Department of Biomedical Sciences, BK21-plus Education Program, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Won-Woo Lee
- Department of Biomedical Sciences, BK21-plus Education Program, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Ischemic/Hypoxic Disease Institute, and Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea; Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Xiao Liu
- Department of Chemistry, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Young-Tae Chang
- Department of Chemistry, Pohang University of Science and Technology, Pohang, Republic of Korea; Center for Self-assembly and Complexity, Institute for Basic Science, Pohang, Republic of Korea
| | - Jong-Wan Park
- Department of Tumor Biology, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Biomedical Sciences, BK21-plus Education Program, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Pharmacology, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Ischemic/Hypoxic Disease Institute, and Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea.
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Mendes LP, Rostamizadeh K, Gollomp K, Myerson JW, Marcos-Contreras OA, Zamora M, Luther E, Brenner JS, Filipczak N, Li X, Torchilin VP. Monoclonal antibody 2C5 specifically targets neutrophil extracellular traps. MAbs 2020; 12:1850394. [PMID: 33323006 PMCID: PMC7755171 DOI: 10.1080/19420862.2020.1850394] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 11/03/2020] [Accepted: 11/10/2020] [Indexed: 10/27/2022] Open
Abstract
Neutrophils can release DNA and granular cytoplasmic proteins that form smooth filaments of stacked nucleosomes (NS). These structures, called neutrophil extracellular traps (NETs), are involved in multiple pathological processes, and NET formation and removal are clinically significant. The monoclonal antibody 2C5 has strong specificity toward intact NS but not to individual NS components, indicating that 2C5 could potentially target NS in NETs. In this study, NETs were generated in vitro using neutrophils and HL-60 cells differentiated into granulocyte-like cells. The specificity of 2C5 toward NETs was evaluated by ELISA, which showed that it binds to NETs with the specificity similar to that for purified nucleohistone substrate. Immunofluorescence showed that 2C5 stains NETs in both static and perfused microfluidic cell cultures, even after NET compaction. Modification of liposomes with 2C5 dramatically enhanced liposome association with NETs. Our results suggest that 2C5 could be used to identify and visualize NETs and serve as a ligand for NET-targeted diagnostics and therapies.
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Affiliation(s)
- Livia P. Mendes
- Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Boston, MA, USA
| | - Kobra Rostamizadeh
- Zanjan Pharmaceutical Nanotechnology Research Center, School of Pharmacy, Pharmaceutical Biomaterials Department, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Kandace Gollomp
- Division of Hematology, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jacob W. Myerson
- Department of Systems Pharmacology and Translational Therapeutics, University of Philadelphia, Philadelphia, PA, USA
| | - Oscar A. Marcos-Contreras
- Department of Systems Pharmacology and Translational Therapeutics, University of Philadelphia, Philadelphia, PA, USA
| | - Marco Zamora
- Department of Systems Pharmacology and Translational Therapeutics, University of Philadelphia, Philadelphia, PA, USA
| | - Ed Luther
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
| | - Jacob S. Brenner
- Department of Systems Pharmacology and Translational Therapeutics, University of Philadelphia, Philadelphia, PA, USA
- Pulmonary, Allergy, & Critical Care Division, University of Philadelphia, PA, USA
| | - Nina Filipczak
- Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Boston, MA, USA
| | - Xiang Li
- Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Boston, MA, USA
- State Key Laboratory of Innovative Drug and Efficient Energy-Saving Pharmaceutical Equipment, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Vladimir P. Torchilin
- Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Boston, MA, USA
- Department of Oncology, Radiotherapy and Plastic Surgery, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
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Weerappuli PD, Louttit C, Kojima T, Brennan L, Yalavarthi S, Xu Y, Ochyl LJ, Maeda ML, Kim HS, Knight JS, Takayama S, Moon JJ. Extracellular Trap-Mimicking DNA-Histone Mesostructures Synergistically Activate Dendritic Cells. Adv Healthc Mater 2019; 8:e1900926. [PMID: 31614077 PMCID: PMC6872909 DOI: 10.1002/adhm.201900926] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/13/2019] [Indexed: 12/15/2022]
Abstract
Extracellular traps (ETs), such as neutrophil extracellular traps, are a physical mesh deployed by immune cells to entrap and constrain pathogens. ETs are immunogenic structures composed of DNA, histones, and an array of variable protein and peptide components. While much attention has been paid to the multifaceted function of these structures, mechanistic studies of ETs remain challenging due to their heterogeneity and complexity. Here, a novel DNA-histone mesostructure (DHM) formed by complexation of DNA and histones into a fibrous mesh is reported. DHMs mirror the DNA-histone structural frame of ETs and offer a facile platform for cell culture studies. It is shown that DHMs are potent activators of dendritic cells and identify both the methylation state of DHMs and physical interaction between dendritic cells and DHMs as key tuning switches for immune stimulation. Overall, the DHM platform provides a new opportunity to study the role of ETs in immune activation and pathophysiology.
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Affiliation(s)
- Priyan D. Weerappuli
- Department of Biomedical Engineering, University of Michigan 2800
Plymouth Drive, Ann Arbor, MI 48109, USA
- Biointerfaces Institute, University of Michigan 2800 Plymouth
Drive, Ann Arbor, MI 48109, USA
| | - Cameron Louttit
- Department of Biomedical Engineering, University of Michigan 2800
Plymouth Drive, Ann Arbor, MI 48109, USA
- Biointerfaces Institute, University of Michigan 2800 Plymouth
Drive, Ann Arbor, MI 48109, USA
| | - Taisuke Kojima
- Wallace H Coulter Department of Biomedical Engineering, Georgia
Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Luke Brennan
- Department of Biomedical Engineering, University of Michigan 2800
Plymouth Drive, Ann Arbor, MI 48109, USA
| | | | - Yao Xu
- Biointerfaces Institute, University of Michigan 2800 Plymouth
Drive, Ann Arbor, MI 48109, USA
- Department of Pharmaceutical Sciences, University of Michigan 2800
Plymouth Drive, Ann Arbor, MI 48109, USA
| | - Lukasz J. Ochyl
- Biointerfaces Institute, University of Michigan 2800 Plymouth
Drive, Ann Arbor, MI 48109, USA
- Department of Pharmaceutical Sciences, University of Michigan 2800
Plymouth Drive, Ann Arbor, MI 48109, USA
| | - Midori L. Maeda
- Wallace H Coulter Department of Biomedical Engineering, Georgia
Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Hong Sun Kim
- Department of Biomedical Engineering, University of Michigan 2800
Plymouth Drive, Ann Arbor, MI 48109, USA
| | - Jason S. Knight
- Division of Rheumatology, University of Michigan, Ann Arbor, MI
48109, USA
| | - Shuichi Takayama
- Wallace H Coulter Department of Biomedical Engineering, Georgia
Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - James J. Moon
- Department of Biomedical Engineering, University of Michigan 2800
Plymouth Drive, Ann Arbor, MI 48109, USA
- Biointerfaces Institute, University of Michigan 2800 Plymouth
Drive, Ann Arbor, MI 48109, USA
- Department of Pharmaceutical Sciences, University of Michigan 2800
Plymouth Drive, Ann Arbor, MI 48109, USA
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Khan MA, Ali ZS, Sweezey N, Grasemann H, Palaniyar N. Progression of Cystic Fibrosis Lung Disease from Childhood to Adulthood: Neutrophils, Neutrophil Extracellular Trap (NET) Formation, and NET Degradation. Genes (Basel) 2019; 10:genes10030183. [PMID: 30813645 PMCID: PMC6471578 DOI: 10.3390/genes10030183] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [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: 01/20/2019] [Accepted: 02/11/2019] [Indexed: 12/11/2022] Open
Abstract
Genetic defects in cystic fibrosis (CF) transmembrane conductance regulator (CFTR) gene cause CF. Infants with CFTR mutations show a peribronchial neutrophil infiltration prior to the establishment of infection in their lung. The inflammatory response progressively increases in children that include both upper and lower airways. Infectious and inflammatory response leads to an increase in mucus viscosity and mucus plugging of small and medium-size bronchioles. Eventually, neutrophils chronically infiltrate the airways with biofilm or chronic bacterial infection. Perpetual infection and airway inflammation destroy the lungs, which leads to increased morbidity and eventual mortality in most of the patients with CF. Studies have now established that neutrophil cytotoxins, extracellular DNA, and neutrophil extracellular traps (NETs) are associated with increased mucus clogging and lung injury in CF. In addition to opportunistic pathogens, various aspects of the CF airway milieux (e.g., airway pH, salt concentration, and neutrophil phenotypes) influence the NETotic capacity of neutrophils. CF airway milieu may promote the survival of neutrophils and eventual pro-inflammatory aberrant NETosis, rather than the anti-inflammatory apoptotic death in these cells. Degrading NETs helps to manage CF airway disease; since DNAse treatment release cytotoxins from the NETs, further improvements are needed to degrade NETs with maximal positive effects. Neutrophil-T cell interactions may be important in regulating viral infection-mediated pulmonary exacerbations in patients with bacterial infections. Therefore, clarifying the role of neutrophils and NETs in CF lung disease and identifying therapies that preserve the positive effects of neutrophils, while reducing the detrimental effects of NETs and cytotoxic components, are essential in achieving innovative therapeutic advances.
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Affiliation(s)
- Meraj A Khan
- Translational Medicine, Peter Gilgan Center for Research and Learning, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada.
| | - Zubair Sabz Ali
- Translational Medicine, Peter Gilgan Center for Research and Learning, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada.
| | - Neil Sweezey
- Translational Medicine, Peter Gilgan Center for Research and Learning, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada.
- Institute of Medical Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5G 1X8, Canada.
- Division of Respiratory Medicine, Department of Paediatrics, The Hospital for Sick Children, and University of Toronto, Toronto, ON M5G 1X8, Canada.
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON M5G 1X8, Canada.
| | - Hartmut Grasemann
- Translational Medicine, Peter Gilgan Center for Research and Learning, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada.
- Institute of Medical Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5G 1X8, Canada.
- Division of Respiratory Medicine, Department of Paediatrics, The Hospital for Sick Children, and University of Toronto, Toronto, ON M5G 1X8, Canada.
| | - Nades Palaniyar
- Translational Medicine, Peter Gilgan Center for Research and Learning, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada.
- Institute of Medical Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5G 1X8, Canada.
- Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON M5G 1X8, Canada.
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Díaz-Godínez C, Carrero JC. The state of art of neutrophil extracellular traps in protozoan and helminthic infections. Biosci Rep 2019; 39:BSR20180916. [PMID: 30498092 PMCID: PMC6328873 DOI: 10.1042/bsr20180916] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [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: 06/08/2018] [Revised: 10/26/2018] [Accepted: 11/15/2018] [Indexed: 12/23/2022] Open
Abstract
Neutrophil extracellular traps (NETs) are DNA fibers associated with histones, enzymes from neutrophil granules and anti-microbial peptides. NETs are released in a process denominated NETosis, which involves sequential steps that culminate with the DNA extrusion. NETosis has been described as a new mechanism of innate immunity related to defense against different pathogens. The initial studies of NETs were carried out with bacteria and fungi, but currently a large variety of microorganisms capable of inducing NETs have been described including protozoan and helminth parasites. Nevertheless, we have little knowledge about how NETosis process is carried out in response to the parasites, and about its implication in the resolution of this kind of disease. In the best case, the NETs entrap and kill parasites in vitro, but in others, immobilize the parasites without affecting their viability. Moreover, insufficient studies on the NETs in animal models of infections that would help to define their role, and the association of NETs with chronic inflammatory pathologies such as those occurring in several parasitic infections have left open the possibility of NETs contributing to pathology instead of protection. In this review, we focus on the reported mechanisms that lead to NET release by protozoan and helminth parasites and the evidence that support the role of NETosis in the resolution or pathogenesis of parasitic diseases.
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Affiliation(s)
- César Díaz-Godínez
- Department of Immunology, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, 04510, México D.F., México
| | - Julio C Carrero
- Department of Immunology, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, 04510, México D.F., México
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Chandrasekaran A, Kalashnikov N, Rayes R, Wang C, Spicer J, Moraes C. Thermal scribing to prototype plastic microfluidic devices, applied to study the formation of neutrophil extracellular traps. Lab Chip 2017; 17:2003-2012. [PMID: 28524191 DOI: 10.1039/c7lc00356k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Innovation in microfluidics-based biological research has been aided by the growing accessibility of versatile microscale fabrication techniques, particularly in rapid prototyping of elastomeric polydimethylsiloxane (PDMS) based devices. However, the use of PDMS presents considerable and often unexpected limitations, particularly in interpreting and validating biological data. To rapidly prototype microfluidic culture systems in conventional plastics commonly used in cell culture, we developed 'thermal scribing', a one-step micromachining technique in which thermoplastics are locally patterned by a heated tip, moving in user-controlled patterns. To demonstrate and study the thermal scribing process, we modified an inexpensive desktop hobby craft cutter with a soldering iron to scribe micropatterns on polystyrene substrates. The thermal scribing technique is useful for creating a variety of channel profiles and geometries, which cannot be readily achieved using other microfabrication approaches. The entire fabrication process, including post-processing operations needed to fabricate devices, can be completed within a few hours without the need for skilled engineering expertise or expensive equipment. We apply this technique to demonstrate that induction of functional neutrophil extracellular traps (NETs) can be significantly enhanced over previous studies, when experiments are conducted in microfluidic channels prototyped in an appropriate material. These results ultimately inform the design of neutrophil culture systems and suggest that the inherent ability of neutrophils to form NETs may have been significantly under-reported.
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Abakumova TV, Antoneeva II, Gening TP, Dolgova DR, Gening SO. [PHENOTYPE OF PERIPHERAL BLOOD NEUTROPHILS IN THE INITIAL STAGE OF ENDOMETRIAL CANCER]. Tsitologiia 2016; 58:23-29. [PMID: 27220248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have examined peripheral blood neutrophils from 123 patients with primary endometrial cancer at stage Ia. Receptor system and the ability of neutrophils to form extracellular traps were assessed by fluorescence microscopy, the spontaneous production of cytokines IL-2, IFN-γ, g-CSF, matrix metalloproteinases-1,9,13 by the method of enzyme-linked immunosorbent assay, phagocytic activity, myeloperoxidase activity, the level of cationic proteis activity in NBT-test were evaluated by cytochemical methods, activity of neutrophils in the spontaneous NBT-test was used to evaluate the oxygen-dependent bactericidal action of neutrophils. The topology and the rigidity of the membrane of neutrophils were assessed by scanning probe microscopy. We have shown that the increase in the relative number of neutrophils lead to a change in their receptor system, aerobic and anaerobic cytotoxicity and ability to phagocytosis are enchanced while reducing NET-activity. We have observed a change in the secretory activity of neutrophils, which is characterized by increased level of MMP-1, possibly initiated by enhanced production of reactive oxygen species, by a reduction in the IL-2 level (inductor of cytotoxic activity) and a sharp increase in the level of the G-CSF. Architectonics of neutrophils in the case of endonetrial cancer at stage Ia is characterized by changing the shape and loss of grit. The rigidity of the cell membrane decreased. Changes in the morphology of neutrophils on the background of the continuing hyperactivity suggests that a state of balance between the immune system and the tumor is already in stage Ia endometrial cancer.
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Savchenko AS, Martinod K, Seidman MA, Wong SL, Borissoff JI, Piazza G, Libby P, Goldhaber SZ, Mitchell RN, Wagner DD. Neutrophil extracellular traps form predominantly during the organizing stage of human venous thromboembolism development. J Thromb Haemost 2014; 12:860-70. [PMID: 24674135 PMCID: PMC4055516 DOI: 10.1111/jth.12571] [Citation(s) in RCA: 182] [Impact Index Per Article: 18.2] [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: 01/15/2014] [Accepted: 03/21/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND A growing health problem, venous thromboembolism (VTE), including pulmonary embolism (PE) and deep vein thrombosis (DVT), requires refined diagnostic and therapeutic approaches. Neutrophils contribute to thrombus initiation and development in experimental DVT. Recent animal studies recognized neutrophil extracellular traps (NETs) as an important scaffold supporting thrombus stability. However, the hypothesis that human venous thrombi involve NETs has not undergone rigorous testing. OBJECTIVE To explore the cellular composition and the presence of NETs within human venous thrombi at different stages of development. PATIENTS AND METHODS We examined 16 thrombi obtained from 11 patients during surgery or at autopsy using histomorphological, immunohistochemical and immunofluorescence analyses. RESULTS We classified thrombus regions as unorganized, organizing and organized according to their morphological characteristics. We then evaluated them, focusing on neutrophil and platelet deposition as well as micro-vascularization of the thrombus body. We observed evidence of NET accumulation, including the presence of citrullinated histone H3 (H3Cit)-positive cells. NETs, defined as extracellular diffuse H3Cit areas associated with myeloperoxidase and DNA, localized predominantly during the phase of organization in human venous thrombi. CONCLUSIONS NETs are present in organizing thrombi in patients with VTE. They are associated with thrombus maturation in humans. Dissolution of NETs might thus facilitate thrombolysis. This finding provides new insights into the clinical development and pathology of thrombosis and provides new perspectives for therapeutic advances.
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Affiliation(s)
- A S Savchenko
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA; Department of Pediatrics, Harvard Medical School, Boston, MA, USA
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