1
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Wang N, Shi XL, Li D, Li BB, Liu P, Luo H. Neutrophil extracellular traps - an a-list-actor in a variety of diseases. Ann Hematol 2024:10.1007/s00277-024-05915-5. [PMID: 39078437 DOI: 10.1007/s00277-024-05915-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 07/25/2024] [Indexed: 07/31/2024]
Abstract
Neutrophil extracellular traps (NETs) represent a response mechanism in which activated neutrophils release DNA-based webs, adorned with histones and neutrophil proteases, to capture and eliminate invasive microorganisms. However, when these neutrophils become excessively activated, much more proteases associated with NETs are liberated into surrounding tissues or bloodstreams, thereby altering the cellular milieu and causing tissue damage. Recent research has revealed that NETs may play significant roles in the emergence and progression of various diseases, spanning from infections, inflammation to autoimmune disorders and cancers. In this review, we delve deeply into the intricate and complex mechanisms that underlie the formation of NETs and their profound interplay with various clinical pathologies. We aim to describe the application perspectives of NETs related proteins in specific disease diagnosis and treatment.
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Affiliation(s)
- Na Wang
- College of Medical Laboratory, Dalian Medical University, Dalian, Liaoning, 116044, PR China
- Department of Central Lab, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong, 264200, PR China
| | - Xiao-Lin Shi
- Department of Clinical Laboratory, Weihai Maternal and Child Health Hospital, Weihai, Shandong, 264200, PR China
| | - Dan Li
- Department of Central Lab, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong, 264200, PR China
| | - Bin-Bin Li
- Department of Central Lab, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong, 264200, PR China
| | - Peng Liu
- Department of Central Lab, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong, 264200, PR China.
| | - Hong Luo
- College of Medical Laboratory, Dalian Medical University, Dalian, Liaoning, 116044, PR China.
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2
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Hernández González LL, Pérez-Campos Mayoral L, Hernández-Huerta MT, Mayoral Andrade G, Martínez Cruz M, Ramos-Martínez E, Pérez-Campos Mayoral E, Cruz Hernández V, Antonio García I, Matias-Cervantes CA, Avendaño Villegas ME, Lastre Domínguez CM, Romero Díaz C, Ruiz-Rosado JDD, Pérez-Campos E. Targeting Neutrophil Extracellular Trap Formation: Exploring Promising Pharmacological Strategies for the Treatment of Preeclampsia. Pharmaceuticals (Basel) 2024; 17:605. [PMID: 38794175 PMCID: PMC11123764 DOI: 10.3390/ph17050605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 05/04/2024] [Indexed: 05/26/2024] Open
Abstract
Neutrophils, which constitute the most abundant leukocytes in human blood, emerge as crucial players in the induction of endothelial cell death and the modulation of endothelial cell responses under both physiological and pathological conditions. The hallmark of preeclampsia is endothelial dysfunction induced by systemic inflammation, in which neutrophils, particularly through the formation of neutrophil extracellular traps (NETs), play a pivotal role in the development and perpetuation of endothelial dysfunction and the hypertensive state. Considering the potential of numerous pharmaceutical agents to attenuate NET formation (NETosis) in preeclampsia, a comprehensive assessment of the extensively studied candidates becomes imperative. This review aims to identify mechanisms associated with the induction and negative regulation of NETs in the context of preeclampsia. We discuss potential drugs to modulate NETosis, such as NF-κβ inhibitors, vitamin D, and aspirin, and their association with mutagenicity and genotoxicity. Strong evidence supports the notion that molecules involved in the activation of NETs could serve as promising targets for the treatment of preeclampsia.
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Affiliation(s)
- Leticia Lorena Hernández González
- National Technology of Mexico/IT Oaxaca, Oaxaca de Juárez, Oaxaca 68030, Mexico; (L.L.H.G.); (M.M.C.); (C.M.L.D.); (C.R.D.)
- Faculty of Biological Systems and Technological Innovation, Autonomous University “Benito Juárez” of Oaxaca, Oaxaca 68125, Mexico
| | - Laura Pérez-Campos Mayoral
- Research Center, Faculty of Medicine UNAM-UABJO, Autonomous University “Benito Juárez” of Oaxaca (UABJO), Oaxaca 68020, Mexico; (L.P.-C.M.); (G.M.A.); (E.P.-C.M.)
| | - María Teresa Hernández-Huerta
- CONAHCyT, Faculty of Medicine and Surgery, Autonomous University “Benito Juárez” of Oaxaca (UABJO), Oaxaca 68020, Mexico; (M.T.H.-H.); (C.A.M.-C.)
| | - Gabriel Mayoral Andrade
- Research Center, Faculty of Medicine UNAM-UABJO, Autonomous University “Benito Juárez” of Oaxaca (UABJO), Oaxaca 68020, Mexico; (L.P.-C.M.); (G.M.A.); (E.P.-C.M.)
| | - Margarito Martínez Cruz
- National Technology of Mexico/IT Oaxaca, Oaxaca de Juárez, Oaxaca 68030, Mexico; (L.L.H.G.); (M.M.C.); (C.M.L.D.); (C.R.D.)
| | - Edgar Ramos-Martínez
- School of Sciences, Autonomous University “Benito Juárez” of Oaxaca (UABJO), Oaxaca 68020, Mexico;
| | - Eduardo Pérez-Campos Mayoral
- Research Center, Faculty of Medicine UNAM-UABJO, Autonomous University “Benito Juárez” of Oaxaca (UABJO), Oaxaca 68020, Mexico; (L.P.-C.M.); (G.M.A.); (E.P.-C.M.)
| | | | | | - Carlos Alberto Matias-Cervantes
- CONAHCyT, Faculty of Medicine and Surgery, Autonomous University “Benito Juárez” of Oaxaca (UABJO), Oaxaca 68020, Mexico; (M.T.H.-H.); (C.A.M.-C.)
| | - Miriam Emily Avendaño Villegas
- National Technology of Mexico/IT Oaxaca, Oaxaca de Juárez, Oaxaca 68030, Mexico; (L.L.H.G.); (M.M.C.); (C.M.L.D.); (C.R.D.)
| | | | - Carlos Romero Díaz
- National Technology of Mexico/IT Oaxaca, Oaxaca de Juárez, Oaxaca 68030, Mexico; (L.L.H.G.); (M.M.C.); (C.M.L.D.); (C.R.D.)
- Research Center, Faculty of Medicine UNAM-UABJO, Autonomous University “Benito Juárez” of Oaxaca (UABJO), Oaxaca 68020, Mexico; (L.P.-C.M.); (G.M.A.); (E.P.-C.M.)
| | - Juan de Dios Ruiz-Rosado
- Kidney and Urinary Tract Research Center, Abigail Wexner Research Institute, Nationwide Children’s Hospital, Columbus, OH 43215, USA
- Division of Nephrology and Hypertension, Nationwide Children’s Hospital, Columbus, OH 43205, USA
| | - Eduardo Pérez-Campos
- National Technology of Mexico/IT Oaxaca, Oaxaca de Juárez, Oaxaca 68030, Mexico; (L.L.H.G.); (M.M.C.); (C.M.L.D.); (C.R.D.)
- Clinical Pathology Laboratory, “Eduardo Pérez Ortega”, Oaxaca 68000, Mexico
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3
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de Mattos TRF, Formiga-Jr MA, Saraiva EM. Resveratrol prevents the release of neutrophil extracellular traps (NETs) by controlling hydrogen peroxide levels and nuclear elastase migration. Sci Rep 2024; 14:9107. [PMID: 38643283 PMCID: PMC11032324 DOI: 10.1038/s41598-024-59854-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 04/16/2024] [Indexed: 04/22/2024] Open
Abstract
Neutrophil extracellular traps (NETs) are defense mechanisms that trap and kill microorganisms and degrade cytokines. However, excessive production, dysregulation of suppression mechanisms, or inefficient removal of NETs can contribute to increased inflammatory response and the development of pathological conditions. Therefore, research has focused on identifying drugs that inhibit or delay the NET release process. Since reactive oxygen species (ROS) play a significant role in NET release, we aimed to investigate whether resveratrol (RSV), with a wide range of biological and pharmacological properties, could modulate NET release in response to different stimuli. Thus, human neutrophils were pretreated with RSV and subsequently stimulated with PMA, LPS, IL-8, or Leishmania. Our findings revealed that RSV reduced the release of NETs in response to all tested stimuli. RSV decreased hydrogen peroxide levels in PMA- and LPS-stimulated neutrophils, inhibited myeloperoxidase activity, and altered the localization of neutrophil elastase. RSV inhibition of NET generation was not mediated through A2A or A2B adenosine receptors or PKA. Based on the observed effectiveness of RSV in inhibiting NET release, our study suggests that this flavonoid holds potential as a candidate for treating NETs involving pathologies.
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Affiliation(s)
- Thayana Roberta Ferreira de Mattos
- Laboratório de Imunidade Inata, Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Marcos Antonio Formiga-Jr
- Laboratório de Imunidade Inata, Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Elvira Maria Saraiva
- Laboratório de Imunidade Inata, Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil.
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4
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Zafarani A, Razizadeh MH, Haghi A. Neutrophil extracellular traps in influenza infection. Heliyon 2023; 9:e23306. [PMID: 38144312 PMCID: PMC10746519 DOI: 10.1016/j.heliyon.2023.e23306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 11/22/2023] [Accepted: 11/30/2023] [Indexed: 12/26/2023] Open
Abstract
Despite recent progress in developing novel therapeutic approaches and vaccines, influenza is still considered a global health threat, with about half a million mortality worldwide. This disease is caused by Influenza viruses, which are known for their rapid evolution due to different genetical mechanisms that help them develop new strains with the ability to evade therapies and immunization. Neutrophils are one of the first immune effectors that act against pathogens. They use multiple mechanisms, including phagocytosis, releasing the reactive oxygen species, degranulation, and the production of neutrophil extracellular traps. Neutrophil extracellular traps are used to ensnare pathogens; however, their dysregulation is attributed to inflammatory and infectious diseases. Here, we discuss the effects of these extracellular traps in the clinical course of influenza infection and their ability to be a potential target in treating influenza infection.
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Affiliation(s)
- Alireza Zafarani
- Department of Hematology & Blood Banking, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Hossein Razizadeh
- Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
- Antimicrobial Resistance Research Center, Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran
| | - Atousa Haghi
- Young Researchers & Elite Club, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
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5
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Vorobjeva N, Dagil Y, Pashenkov M, Pinegin B, Chernyak B. Protein kinase C isoforms mediate the formation of neutrophil extracellular traps. Int Immunopharmacol 2023; 114:109448. [PMID: 36436472 DOI: 10.1016/j.intimp.2022.109448] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/02/2022] [Accepted: 11/09/2022] [Indexed: 11/27/2022]
Abstract
Neutrophils release extracellular traps (NETs) in response to numerous pathogenic microbes as the last suicidal resource (NETosis) in the fight against infection. Apart from the host defense function, NETs play an essential role in the pathogenesis of various autoimmune, inflammatory and malignant diseases. Therefore, understanding the molecular mechanisms of NETosis is important for regulating the aberrant or excessive NET release. Protein kinase C (PKC) is a serine/threonine kinase which is involved in various neutrophil functions, however, little is known about its implication in NETosis activated by various physiological and pharmacological stimuli. Since there are conventional, novel and atypical PKC isoforms (α, βI, βII, δ, and ζ) found in human neutrophils, we investigated their impact in NETosis, oxidative burst and spreading applying pharmacological approach. Using specific inhibitors of PKC isoforms, we showed that PKCβ, PKCδ, and PKCζ are involved in the oxidative burst, spreading and NETosis activated by calcium ionophore A23187, while only PKCβ is implicated in these functions activated by phorbol 12-myristate 13-acetate (PMA). The data obtained in our study might help in the development of new drugs useful for the treatment of autoimmune and inflammatory diseases associated with NETs.
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Affiliation(s)
- Nina Vorobjeva
- Dept. Immunology, Biology Faculty, Lomonosov Moscow State University, 119192 Moscow, Russia.
| | | | - Mikhail Pashenkov
- National Research Center Institute of Immunology of the Federal Medical-Biological Agency, Kashirskoe shosse 24, 115522 Moscow, Russia
| | - Boris Pinegin
- National Research Center Institute of Immunology of the Federal Medical-Biological Agency, Kashirskoe shosse 24, 115522 Moscow, Russia
| | - Boris Chernyak
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
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6
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Gnanaguru G, Mackey A, Choi EY, Arta A, Rossato FA, Gero TW, Urquhart AJ, Scott DA, D'Amore PA, Ng YSE. Discovery of sterically-hindered phenol compounds with potent cytoprotective activities against ox-LDL-induced retinal pigment epithelial cell death as a potential pharmacotherapy. Free Radic Biol Med 2022; 178:360-368. [PMID: 34843917 PMCID: PMC8758799 DOI: 10.1016/j.freeradbiomed.2021.11.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 10/22/2021] [Accepted: 11/19/2021] [Indexed: 01/03/2023]
Abstract
Late-stage dry age-related macular degeneration (AMD) or geographic atrophy (GA) is an irreversible blinding condition characterized by degeneration of retinal pigment epithelium (RPE) and the associated photoreceptors. Clinical and genetic evidence supports a role for dysfunctional lipid processing and accumulation of harmful oxidized lipids in the pathogenesis of GA. Using an oxidized low-density lipoprotein (ox-LDL)-induced RPE death assay, we screened and identified sterically-hindered phenol compounds with potent protective activities for RPE. The phenol-containing PPARγ agonist, troglitazone, protected against ox-LDL-induced RPE cell death, whereas other more potent PPARγ agonists did not protect RPE cells. Knockdown of PPARγ did not affect the protective activity of troglitazone in RPE, confirming the protective function is not due to the thiazolidine (TZD) group of troglitazone. Prototypical hindered phenol trolox and its analogs potently protected against ox-LDL-induced RPE cell death whereas potent antioxidants without the phenol group failed to protect RPE. Hindered phenols preserved lysosomal integrity against ox-LDL-induced damage and FITC-labeled trolox was localized to the lysosomes in RPE cells. Analogs of trolox inhibited reactive oxygen species (ROS) formation induced by ox-LDL uptake in a dose-dependent fashion and were effective at sub-micromolar concentrations. Treatment with trolox analog 2,2,5,7,8-pentamethyl-6-chromanol (PMC) significantly induced the expression of the lysosomal protein NPC-1 and reduced intracellular cholesterol level upon ox-LDL uptake. Our data indicate that the lysosomal-localized hindered phenols are uniquely potent in protecting the RPE against the toxic effects of ox-LDL, and may represent a novel pharmacotherapy to preserve the vision in patients with GA.
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Affiliation(s)
- Gopalan Gnanaguru
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
| | - Ashley Mackey
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
| | - Eun Young Choi
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
| | - Anthoula Arta
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA; Department of Health Technology, Institut for Sundhedsteknologi, Lyngby, Denmark
| | - Franco Aparecido Rossato
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
| | - Thomas W Gero
- Department of Cancer Biology, Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - Andrew J Urquhart
- Department of Health Technology, Institut for Sundhedsteknologi, Lyngby, Denmark
| | - David A Scott
- Department of Cancer Biology, Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - Patricia A D'Amore
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
| | - Yin Shan E Ng
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA.
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7
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Basyreva LY, Vakhrusheva TV, Letkeman ZV, Maximov DI, Fedorova EA, Panasenko ОM, Ostrovsky EM, Gusev SA. Effect of Vitamin D3 in combination with Omega-3 Polyunsaturated Fatty Acids on NETosis in Type 2 Diabetes Mellitus Patients. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8089696. [PMID: 34721760 PMCID: PMC8556114 DOI: 10.1155/2021/8089696] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/07/2021] [Accepted: 09/27/2021] [Indexed: 01/13/2023]
Abstract
An understanding of the consequences of oxidative/halogenative stress triggered by neutrophil activation is impossible without considering NETosis. NETosis, formation of neutrophil extracellular traps (NETs), is known to promote microthrombus formation and impair wound healing in type 2 diabetes mellitus (T2DM) patients. Therefore, there is a need to search for drugs and treatment approaches that could prevent excessive NET formation. We aimed to evaluate the effect of vitamin D3 in combination with omega-3 polyunsaturated fatty acids (vitamin D3/omega-3 PUFAs) on NETosis in T2DM patients with purulent necrotizing lesions of the lower extremities. Patients and healthy subjects had vitamin D3 deficiency. Patients received, beyond standard treatment, 6000 IU of vitamin D3 and 480 mg of omega-3 PUFAs, and healthy subjects 1000 IU of vitamin D3 and 240 mg of omega-3 PUFAs daily for seven days. Neutrophil activation in ex vivo blood by phorbol-12-myristate-13-acetate (PMA) was used as a NETosis model. The percentage of blood NETs relative to leukocytes (NETbackground) before vitamin D3/omega-3 PUFA supplementation was 3.2%-4.9% in healthy subjects and 1.7%-10.8% in patients. These values rose, respectively, to 7.7%-9.1% and 4.0%-17.9% upon PMA-induced NETosis. In addition, the leukocyte count decreased by 700-1300 per 1 μL in healthy subjects and 700-4000 per 1 μL in patients. For both patients and healthy subjects, taking vitamin D3/omega-3 PUFAs had no effect on NETbackground but completely inhibited PMA-induced NET formation, though neutrophils exhibited morphological features of activation. Also, leukocyte loss was reduced (to 500 per 1 μL). For patients on standard treatment alone, changes occurred neither in background NETs and leukocytes nor in their amount after PMA stimulation. The decreased ability of neutrophils to generate NETs, which can be achieved by vitamin D3/omega-3 PUFA supplementation, could have a positive effect on wound healing in T2DM patients and reduce the incidence and severity of complications.
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Affiliation(s)
- Liliya Yu. Basyreva
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Tatyana V. Vakhrusheva
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Zoya V. Letkeman
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Dmitry I. Maximov
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Evgeniya A. Fedorova
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Оleg M. Panasenko
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Evgeny M. Ostrovsky
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Sergey A. Gusev
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
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Jo HM, Ahn C, Kim H, Kang BT, Jeung EB, Yang MP. Effect of quercetin on formation of porcine neutrophil extracellular trap. Vet Immunol Immunopathol 2021; 241:110335. [PMID: 34627080 DOI: 10.1016/j.vetimm.2021.110335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 08/02/2021] [Accepted: 10/02/2021] [Indexed: 10/20/2022]
Abstract
Neutrophil extracellular trap (NET) formation is an immune response to the invasion of external microorganisms. Quercetin, a member of the flavonoid family found in fruits and vegetables, has been examined in multiple biological contexts. The objective of this study was to examine the effect of quercetin on porcine NET formation. We measured NET formation by peripheral blood polymorphonuclear cells (PMNs) using propidium iodide (PI) dye. The amount of tumor necrosis factor (TNF)-α in culture supernatants was quantified by ELISA, and TNF-α mRNA expression was measured by RT-PCR. Direct treatment of PMNs with quercetin did not affect NET formation; however, NET formation was inhibited by exposure to culture supernatant from peripheral blood mononuclear cells (PBMCs) treated with quercetin. By contrast, culture supernatant from PBMCs treated with lipopolysaccharide (LPS) induced high levels of NET formation of PMNs, and this effect was reduced by co-treatment with LPS and quercetin. In addition, treatment of PMNs with recombinant porcine (rp) TNF-α induced high levels of NET formation. PBMCs treated with LPS increased higher levels of TNF-α mRNA and protein, but this effect was weakened when they were co-treated with quercetin. These findings indicated that quercetin inhibits NET formation of PMNs by suppressing production of TNF-α from LPS-stimulated PBMCs. These results suggest that quercetin exerts an anti-inflammatory effect, mediated by down-regulation of TNF-α production from LPS-stimulated PBMCs, which inhibits NET formation in PMNs.
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Affiliation(s)
- Hyun-Min Jo
- Department of Veterinary Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
| | - Changhwan Ahn
- Department of Veterinary Medicine, College of Veterinary Medicine, Jeju National University, Jeju Special Self Governing Province, 63243, Republic of Korea
| | - Hakhyun Kim
- Department of Veterinary Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
| | - Byeong-Teck Kang
- Department of Veterinary Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
| | - Eui-Bae Jeung
- Department of Veterinary Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
| | - Mhan-Pyo Yang
- Department of Veterinary Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea.
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Cahilog Z, Zhao H, Wu L, Alam A, Eguchi S, Weng H, Ma D. The Role of Neutrophil NETosis in Organ Injury: Novel Inflammatory Cell Death Mechanisms. Inflammation 2021; 43:2021-2032. [PMID: 32830308 PMCID: PMC7443373 DOI: 10.1007/s10753-020-01294-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
NETosis is a type of regulated cell death dependent on the formation of neutrophil extracellular traps (NET), where net-like structures of decondensed chromatin and proteases are produced by polymorphonuclear (PMN) granulocytes. These structures immobilise pathogens and restrict them with antimicrobial molecules, thus preventing their spread. Whilst NETs possess a fundamental anti-microbial function within the innate immune system under physiological circumstances, increasing evidence also indicates that NETosis occurs in the pathogenic process of other disease type, including but not limited to atherosclerosis, airway inflammation, Alzheimer’s and stroke. Here, we reviewed the role of NETosis in the development of organ injury, including injury to the brain, lung, heart, kidney, musculoskeletal system, gut and reproductive system, whilst therapeutic agents in blocking injuries induced by NETosis in its primitive stages were also discussed. This review provides novel insights into the involvement of NETosis in different organ injuries, and whilst potential therapeutic measures targeting NETosis remain a largely unexplored area, these warrant further investigation.
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Affiliation(s)
- Zhen Cahilog
- Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK
| | - Hailin Zhao
- Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK
| | - Lingzhi Wu
- Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK
| | - Azeem Alam
- Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK
| | - Shiori Eguchi
- Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK
| | - Hao Weng
- Department of Anesthesiology, Shanghai Fengxian District Central Hospital, Shanghai Jiao Tong University Affiliated Sixth People's Hospital South Campus, Fengxian District, Shanghai, China
| | - Daqing Ma
- Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK.
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A Review of the Neutrophil Extracellular Traps (NETs) from Cow, Sheep and Goat Models. Int J Mol Sci 2021; 22:ijms22158046. [PMID: 34360812 PMCID: PMC8347029 DOI: 10.3390/ijms22158046] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/28/2021] [Accepted: 07/01/2021] [Indexed: 12/11/2022] Open
Abstract
This review provides insight into the importance of understanding NETosis in cows, sheep, and goats in light of the importance to their health, welfare and use as animal models. Neutrophils are essential to innate immunity, pathogen infection, and inflammatory diseases. The relevance of NETosis as a conserved innate immune response mechanism and the translational implications for public health are presented. Increased understanding of NETosis in ruminants will contribute to the prediction of pathologies and design of strategic interventions targeting NETs. This will help to control pathogens such as coronaviruses and inflammatory diseases such as mastitis that impact all mammals, including humans. Definition of unique attributes of NETosis in ruminants, in comparison to what has been observed in humans, has significant translational implications for one health and global food security, and thus warrants further study.
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11
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Yeo J, Lee J, Lee S, Kim WJ. Polymeric Antioxidant Materials for Treatment of Inflammatory Disorders. ADVANCED THERAPEUTICS 2021. [DOI: 10.1002/adtp.202000270] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jiwon Yeo
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Junseok Lee
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
- OmniaMed Co, Ltd Pohang 37673 Republic of Korea
| | - Sanggi Lee
- School of Interdisciplinary Bioscience and Bioengineering (I‐Bio) Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Won Jong Kim
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
- OmniaMed Co, Ltd Pohang 37673 Republic of Korea
- School of Interdisciplinary Bioscience and Bioengineering (I‐Bio) Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
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Fousert E, Toes R, Desai J. Neutrophil Extracellular Traps (NETs) Take the Central Stage in Driving Autoimmune Responses. Cells 2020; 9:cells9040915. [PMID: 32276504 PMCID: PMC7226846 DOI: 10.3390/cells9040915] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/03/2020] [Accepted: 04/05/2020] [Indexed: 12/15/2022] Open
Abstract
Following fifteen years of research, neutrophil extracellular traps (NETs) are widely reported in a large range of inflammatory infectious and non-infectious diseases. Cumulating evidences from in vitro, in vivo and clinical diagnostics suggest that NETs may play a crucial role in inflammation and autoimmunity in a variety of autoimmune diseases, such as rheumatoid arthritis (RA), systemic lupus erythematosus (SLE) and anti-neutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV). Most likely, NETs contribute to breaking self-tolerance in autoimmune diseases in several ways. During this review, we discuss the current knowledge on how NETs could drive autoimmune responses. NETs can break self-tolerance by being a source of autoantigens for autoantibodies found in autoimmune diseases, such as anti-citrullinated protein antibodies (ACPAs) in RA, anti-dsDNA in SLE and anti-myeloperoxidase and anti-protein 3 in AAV. Moreover, NET components could accelerate the inflammatory response by mediating complement activation, acting as danger-associated molecular patterns (DAMPs) and inflammasome activators, for example. NETs also can activate other immune cells, such as B cells, antigen-presenting cells and T cells. Additionally, impaired clearance of NETs in autoimmune diseases prolongs the presence of active NETs and their components and, in this way, accelerate immune responses. NETs have not only been implicated as drivers of inflammation, but also are linked to resolution of inflammation. Therefore, NETs may be central regulators of inflammation and autoimmunity, serve as biomarkers, as well as promising targets for future therapeutics of inflammatory autoimmune diseases.
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Bo Y, Jiang Y, Chen K, Cai K, Li W, Roy J, Bao Y, Cheng J. Targeting infected host cells in vivo via responsive azido-sugar mediated metabolic cell labeling followed by click reaction. Biomaterials 2020; 238:119843. [DOI: 10.1016/j.biomaterials.2020.119843] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 02/02/2020] [Accepted: 02/03/2020] [Indexed: 01/24/2023]
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Lopes Neto JJ, Silva de Almeida T, Almeida Filho LCP, Rocha TM, Nogara PA, Nogara KF, Teixeira da Rocha JB, Almeida Moreira Leal LK, Urano Carvalho AF. Triplaris gardneriana seeds extract exhibits in vitro anti-inflammatory properties in human neutrophils after oxidative treatment. JOURNAL OF ETHNOPHARMACOLOGY 2020; 250:112474. [PMID: 31836515 DOI: 10.1016/j.jep.2019.112474] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/22/2019] [Accepted: 12/09/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Triplaris gardneriana Wedd. (Polygonaceae family) is a plant species from Brazilian semiarid region which is used in local traditional medicine for the treatment of inflammatory conditions such as hemorrhoids. AIM OF THE STUDY In this study, the in vitro anti-inflammatory activity of different concentrations of ethanolic extract from T. gardneriana seeds (EETg) was performed in order to contribute to the knowledge about etnomedicinal use of this plant species. MATERIALS AND METHODS The anti-inflammatory properties were evaluated through different approaches, such as in vitro protein anti-denaturation test, scavenging of reactive oxygen species (ROS) and myeloperoxidase (MPO) inhibition in human neutrophils activated by phorbol-12-myristate-13-acetate (PMA). Besides that, molecular docking was performed to provide new insights about the interaction between the major phenolic components in the plant extract and MPO. RESULTS EETg was characterized showing a total phenol content of 153.5 ± 6.3 μg gallic acid equivalent/mg extract, ability to remove hydrogen peroxide (H2O2) in a concentration-dependent manner and had a spectroscopic profile which suggests the presence of hydroxyl groups. EETg was able to prevent protein denaturation ranging from 40.17 to 75.09%. The extract, at 10 and 20 μg/mL, was able to modulate neutrophils pro-inflammatory functions, such as degranulation and burst respiratory. In both assays, the EETg had anti-inflammatory effect comparable to nonsteroidal anti-inflammatory drugs. Among the main phenolic compounds of EETg, quercitrin, quercetin and catechin showed the highest binding affinity in silico to MPO. CONCLUSION This study demonstrated, for the first time, that the anti-inflammatory effect of T. gardneriana seeds occurs due to its modulatory effect on human neutrophil degranulation and free-radical scavenging activity.
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Affiliation(s)
- José Joaquim Lopes Neto
- Department of Biochemistry and Molecular Biology, Federal University of Ceará, 60020-181, Fortaleza, CE, Brazil
| | - Thiago Silva de Almeida
- Department of Biochemistry and Molecular Biology, Federal University of Ceará, 60020-181, Fortaleza, CE, Brazil
| | | | - Talita Magalhães Rocha
- Pharmaceutical and Cosmetics Studies Center (CEFAC), Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, 60430-370, Fortaleza, CE, Brazil
| | - Pablo Andrei Nogara
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Karise Fernanda Nogara
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | | | - Luzia Kalyne Almeida Moreira Leal
- Pharmaceutical and Cosmetics Studies Center (CEFAC), Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, 60430-370, Fortaleza, CE, Brazil
| | - Ana Fontenele Urano Carvalho
- Department of Biochemistry and Molecular Biology, Federal University of Ceará, 60020-181, Fortaleza, CE, Brazil; Department of Biology, Federal University of Ceará, 60440-900, Fortaleza, CE, Brazil.
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15
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Mitochondrial permeability transition pore is involved in oxidative burst and NETosis of human neutrophils. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165664. [PMID: 31926265 DOI: 10.1016/j.bbadis.2020.165664] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 12/13/2019] [Accepted: 12/30/2019] [Indexed: 12/21/2022]
Abstract
Neutrophils release neutrophil extracellular traps (NETs) in response to numerous pathogenic microbes as the last suicidal resource (NETosis) in the fight against infection. Apart from the host defense function, NETs play an essential role in the pathogenesis of various autoimmune and inflammatory diseases. Therefore, understanding the molecular mechanisms of NETosis is important for regulating aberrant NET release. The initiation of NETosis after the recognition of pathogens by specific receptors is mediated by an increase in intracellular Ca2+ concentration, therefore, the use of Ca2+ ionophore A23187 can be considered a semi-physiological model of NETosis. Induction of NETosis by various stimuli depends on reactive oxygen species (ROS) produced by NADPH oxidase, however, NETosis induced by Ca2+ ionophores was suggested to be mediated by ROS produced in mitochondria (mtROS). Using the mitochondria-targeted antioxidant SkQ1 and specific inhibitors of NADPH oxidase, we showed that both sources of ROS, mitochondria and NADPH oxidase, are involved in NETosis induced by A23187 in human neutrophils. In support of the critical role of mtROS, SkQ1-sensitive NETosis was demonstrated to be induced by A23187 in neutrophils from patients with chronic granulomatous disease (CGD). We assume that Ca2+-triggered mtROS production contributes to NETosis either directly (CGD neutrophils) or by stimulating NADPH oxidase. The opening of the mitochondrial permeability transition pore (mPTP) in neutrophils treated by A23187 was revealed using the electron transmission microscopy as a swelling of the mitochondrial matrix. Using specific inhibitors, we demonstrated that the mPTP is involved in mtROS production, NETosis, and the oxidative burst induced by A23187.
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Lotosh NY, Alyaseva SO, Vasilov RG, Selishcheva AA. Stearylamine Causes the Formation of Neutrophil Extracellular Traps Independently of Reactive Oxygen Species. ACTA ACUST UNITED AC 2019. [DOI: 10.1134/s1990519x19050055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Santos GB, Ribeiro AC, Lima SN, Trostchansky A, Cerdeira CD, Brigagão MR. Nitroxide Tempol down-regulates kinase activities associated with NADPH oxidase function in phagocytic cells and potentially decreases their fungicidal response. Chem Biol Interact 2018; 279:203-209. [DOI: 10.1016/j.cbi.2017.11.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/02/2017] [Accepted: 11/23/2017] [Indexed: 11/29/2022]
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Lewandowski M, Gwozdzinski K. Nitroxides as Antioxidants and Anticancer Drugs. Int J Mol Sci 2017; 18:ijms18112490. [PMID: 29165366 PMCID: PMC5713456 DOI: 10.3390/ijms18112490] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 11/15/2017] [Accepted: 11/16/2017] [Indexed: 02/07/2023] Open
Abstract
Nitroxides are stable free radicals that contain a nitroxyl group with an unpaired electron. In this paper, we present the properties and application of nitroxides as antioxidants and anticancer drugs. The mostly used nitroxides in biology and medicine are a group of heterocyclic nitroxide derivatives of piperidine, pyrroline and pyrrolidine. The antioxidant action of nitroxides is associated with their redox cycle. Nitroxides, unlike other antioxidants, are characterized by a catalytic mechanism of action associated with a single electron oxidation and reduction reaction. In biological conditions, they mimic superoxide dismutase (SOD), modulate hemoprotein’s catalase-like activity, scavenge reactive free radicals, inhibit the Fenton and Haber-Weiss reactions and suppress the oxidation of biological materials (peptides, proteins, lipids, etc.). The use of nitroxides as antioxidants against oxidative stress induced by anticancer drugs has also been investigated. The application of nitroxides and their derivatives as anticancer drugs is discussed in the contexts of breast, hepatic, lung, ovarian, lymphatic and thyroid cancers under in vivo and in vitro experiments. In this article, we focus on new natural spin-labelled derivatives such as camptothecin, rotenone, combretastatin, podophyllotoxin and others. The applications of nitroxides in the aging process, cardiovascular disease and pathological conditions were also discussed.
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Affiliation(s)
- Marcin Lewandowski
- Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-136 Lodz, Poland.
| | - Krzysztof Gwozdzinski
- Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-136 Lodz, Poland.
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Rincon JC, Cuenca AL, Raymond SL, Mathias B, Nacionales DC, Ungaro R, Efron PA, Wynn JL, Moldawer LL, Larson SD. Adjuvant pretreatment with alum protects neonatal mice in sepsis through myeloid cell activation. Clin Exp Immunol 2017; 191:268-278. [PMID: 29052227 DOI: 10.1111/cei.13072] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2017] [Indexed: 01/06/2023] Open
Abstract
The high mortality in neonatal sepsis has been related to both quantitative and qualitative differences in host protective immunity. Pretreatment strategies to prevent sepsis have received inadequate consideration, especially in the premature neonate, where outcomes from sepsis are so dismal. Aluminium salts-based adjuvants (alum) are used currently in many paediatric vaccines, but their use as an innate immune stimulant alone has not been well studied. We asked whether pretreatment with alum adjuvant alone could improve outcome and host innate immunity in neonatal mice given polymicrobial sepsis. Subcutaneous alum pretreatment improves survival to polymicrobial sepsis in both wild-type and T and B cell-deficient neonatal mice, but not in caspase-1/11 null mice. Moreover, alum increases peritoneal macrophage and neutrophil phagocytosis, and decreases bacterial colonization in the peritoneum. Bone marrow-derived neutrophils from alum-pretreated neonates produce more neutrophil extracellular traps (NETs) and exhibit increased expression of neutrophil elastase (NE) after in-vitro stimulation with phorbol esters. In addition, alum pretreatment increases bone marrow and splenic haematopoietic stem cell expansion following sepsis. Pretreatment of neonatal mice with an alum-based adjuvant can stimulate multiple innate immune cell functions and improve survival. These novel findings suggest a therapeutic pathway for the use of existing alum-based adjuvants for preventing sepsis in premature infants.
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Affiliation(s)
- J C Rincon
- Department of Surgery, University of Florida College of Medicine, Gainesville, FL, USA
| | - A L Cuenca
- Department of Surgery, University of Florida College of Medicine, Gainesville, FL, USA
| | - S L Raymond
- Department of Surgery, University of Florida College of Medicine, Gainesville, FL, USA
| | - B Mathias
- Department of Surgery, University of Florida College of Medicine, Gainesville, FL, USA
| | - D C Nacionales
- Department of Surgery, University of Florida College of Medicine, Gainesville, FL, USA
| | - R Ungaro
- Department of Surgery, University of Florida College of Medicine, Gainesville, FL, USA
| | - P A Efron
- Department of Surgery, University of Florida College of Medicine, Gainesville, FL, USA
| | - J L Wynn
- Department of Pediatrics, University of Florida College of Medicine, Gainesville, FL, USA.,Departments of Pathology, Immunology, Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, USA
| | - L L Moldawer
- Department of Surgery, University of Florida College of Medicine, Gainesville, FL, USA
| | - S D Larson
- Department of Surgery, University of Florida College of Medicine, Gainesville, FL, USA
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Ricci-Azevedo R, Gonçales RA, Roque-Barreira MC, Girard D. Human neutrophils are targets to paracoccin, a lectin expressed by Paracoccidioides brasiliensis. Inflamm Res 2017; 67:31-41. [DOI: 10.1007/s00011-017-1093-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 08/16/2017] [Accepted: 09/19/2017] [Indexed: 01/05/2023] Open
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Pinegin B, Vorobjeva N, Pashenkov M, Chernyak B. The role of mitochondrial ROS in antibacterial immunity. J Cell Physiol 2017; 233:3745-3754. [PMID: 28771715 DOI: 10.1002/jcp.26117] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 08/01/2017] [Indexed: 12/26/2022]
Abstract
Reactive oxygen species (ROS) are essential participants of various innate immune cell responses against microorganisms and are also involved in many cellular regulatory pathways. It was believed that the main pool of ROS in the innate immune cells is generated by the NADPH oxidase enzymatic complex. However, it was discovered recently that mitochondrial ROS (mtROS) are equally important for the functioning of the immune system. mtROS play an important role in the development of the antimicrobial innate immune responses. The present mini-review summarizes the most recent data on the role of mtROS in the antibacterial immunity. The principles of mtROS formation and possible mechanisms of their generation under the activation of innate immunity are highlighted in this review. We also speculate on the possibilities of using activators of mtROS production in clinical practice.
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Affiliation(s)
- Boris Pinegin
- Laboratory of Clinical Immunology, National Research Center "Institute of Immunology" of the Federal Medical-Biological Agency, Moscow, Russia
| | - Nina Vorobjeva
- Department of Immunology, Biological Faculty, Lomonosov Moscow State University, Moscow, Russia
| | - Mikhail Pashenkov
- Laboratory of Clinical Immunology, National Research Center "Institute of Immunology" of the Federal Medical-Biological Agency, Moscow, Russia
| | - Boris Chernyak
- Department of Bioenergetics, A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
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22
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Wu M, Feng K, Li Q, Ma H, Zhu H, Xie Y, Yan G, Chen C, Yan K. Glutaraldehyde-polymerized hemoglobin and tempol (PolyHb-tempol) has superoxide dismutase activity that can attenuate oxidative stress on endothelial cells induced by superoxide anion. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2017; 46:47-55. [PMID: 28521553 DOI: 10.1080/21691401.2017.1328685] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A Tempol compound with an amine group (4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl, NH2-Tempol) was cross-linked to hemoglobin in a one-step polymerization reaction to produce a novel hemoglobin-based oxygen carrier (HBOC) designated PolyHb-Tempol. The reaction parameters, including the reaction time, pH, temperature, and ratio of reactants, were optimized, and the physiochemical properties of the resulting product were characterized. PolyHb-Tempol didn't show any toxicity towards endothelial cells. Furthermore, from observations of cell morphology and viability, PolyHb-Tempol showed a significant ability to inhibit or eliminate oxidative stress induced by superoxide free radicals. These results suggest that PolyHb-Tempol may potentially be suitable as an HBOC.
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Affiliation(s)
- Mengdi Wu
- a College of Life Science , Northwest University , Xi'an , P.R. China
| | - Kun Feng
- a College of Life Science , Northwest University , Xi'an , P.R. China
| | - Qiuhui Li
- a College of Life Science , Northwest University , Xi'an , P.R. China
| | - Huiya Ma
- a College of Life Science , Northwest University , Xi'an , P.R. China
| | - Hongli Zhu
- a College of Life Science , Northwest University , Xi'an , P.R. China.,b National Engineering Research Center for Miniaturized Detection System , Xi'an , P.R. China
| | - Yudou Xie
- c Shaanxi Lifegen Co., Ltd. , Xi'an , P.R. China
| | - Gaofei Yan
- c Shaanxi Lifegen Co., Ltd. , Xi'an , P.R. China
| | - Chao Chen
- a College of Life Science , Northwest University , Xi'an , P.R. China.,b National Engineering Research Center for Miniaturized Detection System , Xi'an , P.R. China
| | - Kunping Yan
- a College of Life Science , Northwest University , Xi'an , P.R. China.,b National Engineering Research Center for Miniaturized Detection System , Xi'an , P.R. China
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23
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Hoppenbrouwers T, Autar ASA, Sultan AR, Abraham TE, van Cappellen WA, Houtsmuller AB, van Wamel WJB, van Beusekom HMM, van Neck JW, de Maat MPM. In vitro induction of NETosis: Comprehensive live imaging comparison and systematic review. PLoS One 2017; 12:e0176472. [PMID: 28486563 PMCID: PMC5423591 DOI: 10.1371/journal.pone.0176472] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 04/11/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Multiple inducers of in vitro Neutrophil Extracellular Trap (NET) formation (NETosis) have been described. Since there is much variation in study design and results, our aim was to create a systematic review of NETosis inducers and perform a standardized in vitro study of NETosis inducers important in (cardiac) wound healing. METHODS In vitro NETosis was studied by incubating neutrophils with PMA, living and dead bacteria (S. aureus and E. coli), LPS, (activated) platelets (supernatant), glucose and calcium ionophore Ionomycin using 3-hour periods of time-lapse confocal imaging. RESULTS PMA is a consistent and potent inducer of NETosis. Ionomycin also consistently resulted in extrusion of DNA, albeit with a process that differs from the NETosis process induced by PMA. In our standardized experiments, living bacteria were also potent inducers of NETosis, but dead bacteria, LPS, (activated) platelets (supernatant) and glucose did not induce NETosis. CONCLUSION Our systematic review confirms that there is much variation in study design and results of NETosis induction. Our experimental results confirm that under standardized conditions, PMA, living bacteria and Ionomycin all strongly induce NETosis, but real-time confocal imaging reveal different courses of events.
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Affiliation(s)
- Tamara Hoppenbrouwers
- Department of Plastic and Reconstructive Surgery, Erasmus MC, Rotterdam, The Netherlands
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
| | - Anouchska S. A. Autar
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | - Andi R. Sultan
- Department of Microbiology and Infectious Diseases, Erasmus MC, Rotterdam, The Netherlands
| | - Tsion E. Abraham
- Optical Imaging Center, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | | | | | - Willem J. B. van Wamel
- Department of Microbiology and Infectious Diseases, Erasmus MC, Rotterdam, The Netherlands
| | | | - Johan W. van Neck
- Department of Plastic and Reconstructive Surgery, Erasmus MC, Rotterdam, The Netherlands
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Vorobjeva N, Prikhodko A, Galkin I, Pletjushkina O, Zinovkin R, Sud'ina G, Chernyak B, Pinegin B. Mitochondrial reactive oxygen species are involved in chemoattractant-induced oxidative burst and degranulation of human neutrophils in vitro. Eur J Cell Biol 2017; 96:254-265. [PMID: 28325500 DOI: 10.1016/j.ejcb.2017.03.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 03/04/2017] [Accepted: 03/04/2017] [Indexed: 12/23/2022] Open
Abstract
Activation of neutrophils is accompanied by the oxidative burst, exocytosis of various granule types (degranulation) and a delay in spontaneous apoptosis. The major source of reactive oxygen species (ROS) in human neutrophils is NADPH oxidase (NOX2), however, other sources of ROS also exist. Although the function of ROS is mainly defensive, they can also play a regulatory role in cell signaling. However, the contribution of various sources of ROS in these processes is not clear. We investigated a possible role of mitochondria-derived ROS (mtROS) in the regulation of neutrophil activation induced by chemoattractant fMLP in vitro. Using the mitochondria-targeted antioxidant SkQ1, we demonstrated that mtROS are implicated in the oxidative burst caused by NOX2 activation as well as in the exocytosis of primary (azurophil) and secondary (specific) granules. Scavenging of mtROS with SkQ1 slightly accelerated spontaneous apoptosis and significantly stimulated apoptosis of fMLP-activated neutrophils. These data indicate that mtROS play a critical role in signal transduction that mediates the major neutrophil functional responses in the process of activation.
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Affiliation(s)
- Nina Vorobjeva
- Department Immunology, Biology Faculty; Lomonosov Moscow State University, 119998 Moscow, Russia; Institute of Immunology, FMBA, Kashirskoe Shosse 24/2, 115478, Moscow, Russia.
| | - Anastasia Prikhodko
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Ivan Galkin
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Olga Pletjushkina
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Roman Zinovkin
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Galina Sud'ina
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Boris Chernyak
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Boris Pinegin
- Institute of Immunology, FMBA, Kashirskoe Shosse 24/2, 115478, Moscow, Russia
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Abstract
Many aspects of neutrophil hyperactivity and its role in numerous immune responses still remain a mystery. A new neutrophil mechanism was discovered recently, i.e., the formation of neutrophil extracellular traps (NETs). These structures, composed of DNA strands and neutrophil granule proteins, are an element of the non-specific immune response and bind pathogens to prevent their spread and ensure increased local concentrations of toxic factors. Research on this phenomenon shows that tumor-associated neutrophils (TANs) also form and release NETs. Reports on the role of NETs in the course of cancer are scarce, and the opinions on the involvement of extracellular traps in the disease are divided, indicating a dual function. There is speculation about the anti-cancer properties of NETs connected with direct killing of cancer cells or stimulation of the immune system. On the other hand, the trap structures might promote migration and immune escape of cancer cells or constitute a physical barrier between cancer cells and immune-competent cells. This article summarizes our knowledge about the proven roles of NETs in the course of cancer with particular focus on the significance of NETs as prognosis biomarkers in the course of the neoplastic process and their potential use in therapy.
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Giaglis S, Hahn S, Hasler P. "The NET Outcome": Are Neutrophil Extracellular Traps of Any Relevance to the Pathophysiology of Autoimmune Disorders in Childhood? Front Pediatr 2016; 4:97. [PMID: 27679792 PMCID: PMC5020135 DOI: 10.3389/fped.2016.00097] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 08/30/2016] [Indexed: 01/08/2023] Open
Abstract
Neutrophil extracellular trap (NET) formation represents a form of cell death distinct from apoptosis or necrosis, by which invading pathogens are simultaneously entangled and potentially eliminated. Increased NET formation is observed in systemic lupus erythematosus (SLE), rheumatoid arthritis, antineutrophil cytoplasmic antibody-associated small vessel vasculitis, antiphospholipid antibody syndrome (APS), and psoriasis. NETs contribute to the pathogenesis of autoimmunity by exposing cryptic autoepitopes, which may facilitate the generation of autoantibodies, induce the production of interferons, and activate the complement cascade. In SLE, augmented disease activity and renal disease are associated with increased NET formation, so that NETs could serve as a marker for the monitoring of disease activity. NETs can additionally cause endothelial cell damage and death and stimulate inflammation in atheromatous plaques, adding to the accelerated atherosclerosis witnessed in autoimmune disease. Since NETs induce production of interferons, assessing the extent of NET formation might facilitate the prediction of IFN-alpha levels and identification of SLE patients with presumably better responses to anti-IFN-alpha therapies or other novel therapeutic concepts, such as N-acetyl-cysteine and inhibitors of DNase 1 and peptidylarginine deiminase 4 (PAD4), which also target NETs. In summary, the study of NETs provides a novel approach to the understanding of autoimmune disease pathogenesis in childhood and opens new vistas in the development of sensitive disease markers and targeted therapies.
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Affiliation(s)
- Stavros Giaglis
- Laboratory of Prenantal Medicine, Department of Biomedicine, University Clinics Basel, Basel, Switzerland; Department of Rheumatology, Kantonsspital Aarau, Aarau, Switzerland
| | - Sinuhe Hahn
- Laboratory of Prenantal Medicine, Department of Biomedicine, University Clinics Basel, Basel, Switzerland; University Women's Hospital, University Clinics Basel, Basel, Switzerland
| | - Paul Hasler
- Department of Rheumatology, Kantonsspital Aarau , Aarau , Switzerland
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