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Liu FC, Yu HP, Liao CC, Chou AH, Lee HC. Corilagin Inhibits Neutrophil Extracellular Trap Formation and Protects against Hydrochloric Acid/Lipopolysaccharide-Induced Acute Lung Injury in Mice by Suppressing the STAT3 and NOX2 Signaling Pathways. Antioxidants (Basel) 2024; 13:491. [PMID: 38671938 PMCID: PMC11047527 DOI: 10.3390/antiox13040491] [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: 02/13/2024] [Revised: 03/30/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Acute lung injury (ALI) and its severe manifestation, acute respiratory distress syndrome (ARDS), are characterized by uncontrolled inflammatory responses, neutrophil activation and infiltration, damage to the alveolar capillary membrane, and diffuse alveolar injury. Neutrophil extracellular traps (NETs), formed by activated neutrophils, contribute significantly to various inflammatory disorders and can lead to tissue damage and organ dysfunction. Corilagin, a compound found in Phyllanthus urinaria, possesses antioxidative and anti-inflammatory properties. In this study, we investigated the protective effects and underlying mechanisms of corilagin in hydrochloric acid (HCl)/lipopolysaccharide (LPS)-induced lung injury. Mice received intraperitoneal administration of corilagin (2.5, 5, or 10 mg/kg) or an equal volume of saline 30 min after intratracheal HCl/LPS administration. After 20 h, lung tissues were collected for analysis. Corilagin treatment significantly mitigated lung injury, as evidenced by reduced inflammatory cell infiltration, decreased production of proinflammatory cytokines, and alleviated oxidative stress. Furthermore, corilagin treatment suppressed neutrophil elastase expression, reduced NET formation, and inhibited the expression of ERK, p38, AKT, STAT3, and NOX2. Our findings suggest that corilagin inhibits NET formation and protects against HCl/LPS-induced ALI in mice by modulating the STAT3 and NOX2 signaling pathways.
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Affiliation(s)
- Fu-Chao Liu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan; (F.-C.L.); (H.-P.Y.); (C.-C.L.); (A.-H.C.)
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Huang-Ping Yu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan; (F.-C.L.); (H.-P.Y.); (C.-C.L.); (A.-H.C.)
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chia-Chih Liao
- Department of Anesthesiology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan; (F.-C.L.); (H.-P.Y.); (C.-C.L.); (A.-H.C.)
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - An-Hsun Chou
- Department of Anesthesiology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan; (F.-C.L.); (H.-P.Y.); (C.-C.L.); (A.-H.C.)
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Hung-Chen Lee
- Department of Anesthesiology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan; (F.-C.L.); (H.-P.Y.); (C.-C.L.); (A.-H.C.)
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
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Bashar SJ, Holmes CL, Shelef MA. Macrophage extracellular traps require peptidylarginine deiminase 2 and 4 and are a source of citrullinated antigens bound by rheumatoid arthritis autoantibodies. Front Immunol 2024; 15:1167362. [PMID: 38476240 PMCID: PMC10927735 DOI: 10.3389/fimmu.2024.1167362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 01/29/2024] [Indexed: 03/14/2024] Open
Abstract
Introduction Anti-citrullinated protein antibodies (ACPAs) are a hallmark of rheumatoid arthritis, but the sources of citrullinated antigens as well as which peptidylarginine deiminases (PADs) are required for their production remain incompletely defined. Here, we investigated if macrophage extracellular traps (METs) could be a source of citrullinated proteins bound by APCAs, and if their formation requires PAD2 or PAD4. Methods Thioglycolate-induced peritoneal macrophages from wild-type, PAD2-/-, and PAD4-/- mice or human peripheral blood-derived M1 macrophages were activated with a variety of stimulants, then fixed and stained with DAPI and either anti-citrullinated histone H4 (citH4) antibody or sera from ACPA+ or ACPA- rheumatoid arthritis subjects. METs were visualized by immunofluorescence, confirmed to be extracellular using DNase, and quantified. Results We found that ionomycin and monosodium urate crystals reliably induced murine citH4+ METs, which were reduced in the absence of PAD2 and lost in the absence of PAD4. Also, IgG from ACPA+, but not ACPA-, rheumatoid arthritis sera bound to murine METs, and in the absence of PAD2 or PAD4, ACPA-bound METs were lost. Finally, ionomycin induced human METs that are citH4+ and ACPA-bound. Discussion Thus, METs may contribute to the pool of citrullinated antigens bound by ACPAs in a PAD2- and PAD4-dependent manner, providing new insights into the targets of immune tolerance loss in rheumatoid arthritis.
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Affiliation(s)
- S. Janna Bashar
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Caitlyn L. Holmes
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Miriam A. Shelef
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, United States
- William S. Middleton Memorial Veteran’s Hospital, Madison, WI, United States
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3
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Chu C, Wang X, Chen F, Yang C, Shi L, Xu W, Wang K, Liu B, Wang C, Sun D, Li J, Ding W. Neutrophil extracellular traps aggravate intestinal epithelial necroptosis in ischaemia-reperfusion by regulating TLR4/RIPK3/FUNDC1-required mitophagy. Cell Prolif 2024; 57:e13538. [PMID: 37691112 PMCID: PMC10771116 DOI: 10.1111/cpr.13538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/08/2023] [Accepted: 08/14/2023] [Indexed: 09/12/2023] Open
Abstract
Neutrophil extracellular trap (NET) has been confirmed to be related to gut barrier injury during intestinal ischaemia-reperfusion (II/R). However, the specific molecular regulatory mechanism of NETs in II/R-induced intestinal barrier damage has yet to be fully elucidated. Here, we reported increased NETs infiltration accompanied by elevated inflammatory cytokines, cellular necroptosis and tight junction disruption in the intestine of human II/R patients. Meanwhile, NETs aggravated Caco-2 intestinal epithelial cell necroptosis, impairing the monolayer barrier in vitro. Moreover, Pad4-deficient mice were used further to validate the role of NETs in II/R-induced intestinal injury. In contrast, NET inhibition via Pad4 deficiency alleviated intestinal inflammation, attenuated cellular necroptosis, improved intestinal permeability, and enhanced tight junction protein expression. Notably, NETs prevented FUN14 domain-containing 1 (FUNDC1)-required mitophagy activation in intestinal epithelial cells, and stimulating mitophagy attenuated NET-associated mitochondrial dysfunction, cellular necroptosis, and intestinal damage. Mechanistically, silencing Toll-like receptor 4 (TLR4) or receptor-interacting protein kinase 3 (RIPK3) via shRNA relieved mitophagy limitation, restored mitochondrial function and reduced NET-induced necroptosis in Caco-2 cells, whereas this protective effect was reversed by TLR4 or RIPK3 overexpression. The regulation of TLR4/RIPK3/FUNDC1-required mitophagy by NETs can potentially induce intestinal epithelium necroptosis.
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Affiliation(s)
- Chengnan Chu
- Division of Trauma and Acute Care Surgery, Department of Surgery, Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina
| | - Xinyu Wang
- Division of Trauma and Acute Care Surgery, Department of Surgery, Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina
| | - Fang Chen
- Division of Trauma and Acute Care Surgery, Jinling Hospital, School of MedicineSoutheast UniversityNanjingJiangsu ProvinceChina
| | - Chao Yang
- Division of Trauma and Acute Care Surgery, Department of Surgery, Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina
| | - Lin Shi
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjingJiangsu ProvinceChina
| | - Weiqi Xu
- Division of Trauma and Acute Care Surgery, Department of Surgery, Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina
| | - Kai Wang
- Division of Trauma and Acute Care Surgery, Department of Surgery, Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina
| | - Baochen Liu
- Division of Trauma and Acute Care Surgery, Department of Surgery, Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina
| | - Chenyang Wang
- Key Laboratory of Intestinal Injury, Research Institute of General Surgery, Affiliated Jinling HospitalMedical School of Nanjing UniversityNanjingJiangsuChina
| | - Dongping Sun
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjingJiangsu ProvinceChina
| | - Jieshou Li
- Division of Trauma and Acute Care Surgery, Department of Surgery, Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina
| | - Weiwei Ding
- Division of Trauma and Acute Care Surgery, Department of Surgery, Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina
- Division of Trauma and Acute Care Surgery, Jinling Hospital, School of MedicineSoutheast UniversityNanjingJiangsu ProvinceChina
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Nunez JH, Juan C, Sun Y, Hong J, Bancroft AC, Hwang C, Medrano JM, Huber AK, Tower RJ, Levi B. Neutrophil and NETosis Modulation in Traumatic Heterotopic Ossification. Ann Surg 2023; 278:e1289-e1298. [PMID: 37325925 PMCID: PMC10724380 DOI: 10.1097/sla.0000000000005940] [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] [Indexed: 06/17/2023]
Abstract
OBJECTIVE To characterize the role of neutrophil extracellular traps (NETs) in heterotopic ossification (HO) formation and progression and to use mechanical and pharmacological methods to decrease NETosis and mitigate HO formation. BACKGROUND Traumatic HO is the aberrant osteochondral differentiation of mesenchymal progenitor cells after traumatic injury, burns, or surgery. While the innate immune response has been shown to be necessary for HO formation, the specific immune cell phenotype and function remain unknown. Neutrophils, one of the earliest immune cells to respond after HO-inducing injuries, can extrude DNA, forming highly inflammatory NETs. We hypothesized that neutrophils and NETs would be diagnostic biomarkers and therapeutic targets for the detection and mitigation of HO. METHODS C57BL6J mice underwent burn/tenotomy (a well-established mouse model of HO) or a non-HO-forming sham injury. These mice were either (1) ambulated ad libitum, (2) ambulated ad libitum with daily intraperitoneal hydroxychloroquine, ODN-2088 (both known to affect NETosis pathways), or control injections, or (3) had the injured hind limb immobilized. Single-cell analysis was performed to analyze neutrophils, NETosis, and downstream signaling after the HO-forming injury. Immunofluorescence microscopy was used to visualize NETosis at the HO site and neutrophils were identified using flow cytometry. Serum and cell lysates from HO sites were analyzed using enzyme-linked immunosorbent assay for myeloperoxidase-DNA and ELA2-DNA complexes to identify NETosis. Micro-computerized tomography was performed on all groups to analyze the HO volume. RESULTS Molecular and transcriptional analyses revealed the presence of NETs within the HO injury site, which peaked in the early phases after injury. These NETs were highly restricted to the HO site, with gene signatures derived from both in vitro NET induction and clinical neutrophil characterizations showing a high degree of NET "priming" at the site of injury, but not in neutrophils in the blood or bone marrow. Cell-cell communication analyses revealed that this localized NET formation coincided with high levels of toll-like receptor signaling specific to neutrophils at the injury site. Reducing the overall neutrophil abundance within the injury site, either pharmacologically through treatment with hydroxychloroquine, the toll-like receptor 9 inhibitor OPN-2088, or mechanical treatment with limb offloading, results in the mitigation of HO formation. CONCLUSIONS These data provide a further understanding of the ability of neutrophils to form NETs at the injury site, clarify the role of neutrophils in HO, and identify potential diagnostic and therapeutic targets for HO mitigation.
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Affiliation(s)
- Johanna H Nunez
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas, Southwestern, Dallas, TX
| | - Conan Juan
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas, Southwestern, Dallas, TX
| | - Yuxiao Sun
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas, Southwestern, Dallas, TX
| | - Jonathan Hong
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas, Southwestern, Dallas, TX
| | - Alec C Bancroft
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas, Southwestern, Dallas, TX
| | - Charles Hwang
- Department of Plastic Surgery, Harvard University, Cambridge, MA
| | - Jessica Marie Medrano
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas, Southwestern, Dallas, TX
| | - Amanda K Huber
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI
| | - Robert J Tower
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas, Southwestern, Dallas, TX
| | - Benjamin Levi
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas, Southwestern, Dallas, TX
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Zhu C, Shi S, Jiang P, Huang X, Zhao J, Jin Y, Shen Y, Zhou X, Liu H, Cai J. Curcumin Alleviates Hepatic Ischemia-Reperfusion Injury by Inhibiting Neutrophil Extracellular Traps Formation. J INVEST SURG 2023; 36:2164813. [PMID: 36603844 DOI: 10.1080/08941939.2022.2164813] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Hepatic ischemia-reperfusion injury (IRI) is a common innate immune-mediated sterile inflammatory response in liver transplantation and liver tumor resection. Neutrophil extracellular traps (NETs) can aggravate liver injury and activates innate immune response in the process of liver IRI. However, Curcumin (Cur) can reverse this damage and reduce NETs formation. Nevertheless, the specific regulatory mechanism is still unclear in liver IRI. This study aimed to explore the potential mechanisms that how does Cur alleviate hepatic IRI by inhibits NETs production and develop novel treatment regimens. METHODS We established a hepatic IRI model by subjecting C57BL/6J mice to 60 min of ischemia, followed by reperfusion for 2 h, 6 h, 12 h, and 24 h respectively. Subsequently, we were separated into 5 groups, namely the I/R group, Cur group, DNase-1 group, Cur + DNase1 group and sham operation group. Serum alanine aminotransferase (ALT) and aspartate transaminase (AST), Hematoxylin-eosin staining, immunofluorescence, and TUNEL analysis were applied to assess liver injury degree and NETs levels. Western blot assay was used to detect the protein levels of apoptosis-related proteins and MEK pathway proteins. RESULTS Cur could alleviate hepatic IRI by inhibiting the generation of NETs via suppressing the MEK/ERK pathway. In addition, this study also revealed that DNase-1 is vital for alleviating hepatic IRI by reducing the generation of NETs. CONCLUSIONS Cur combined with DNase-1 was more effective than the two drugs administered alone in alleviating hepatic IRI by inhibiting the generation of NETs. These results also suggested that curcumin combined with DNase-1 was a potential therapeutic strategy to mitigate hepatic IRI.
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Affiliation(s)
- Cunle Zhu
- The Institute of Transplantation Science, Qingdao University, Qingdao, Shandong Province, China.,Organ Transplantation Center, The Institute of Transplantation Science, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Shangheng Shi
- The Institute of Transplantation Science, Qingdao University, Qingdao, Shandong Province, China
| | - Peng Jiang
- The Institute of Transplantation Science, Qingdao University, Qingdao, Shandong Province, China
| | - Xijian Huang
- The Institute of Transplantation Science, Qingdao University, Qingdao, Shandong Province, China
| | - Jinxin Zhao
- The Institute of Transplantation Science, Qingdao University, Qingdao, Shandong Province, China
| | - Yan Jin
- The Institute of Transplantation Science, Qingdao University, Qingdao, Shandong Province, China
| | - Yuntai Shen
- The Institute of Transplantation Science, Qingdao University, Qingdao, Shandong Province, China
| | - Xin Zhou
- The Institute of Transplantation Science, Qingdao University, Qingdao, Shandong Province, China
| | - Huan Liu
- Organ Transplantation Center, The Institute of Transplantation Science, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Jinzhen Cai
- Organ Transplantation Center, The Institute of Transplantation Science, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
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Shimizu M, Yoshimatsu G, Morita Y, Tanaka T, Sakata N, Tagashira H, Wada H, Kodama S. Rescue of murine hind limb ischemia via angiogenesis and lymphangiogenesis promoted by cellular communication network factor 2. Sci Rep 2023; 13:20029. [PMID: 37973852 PMCID: PMC10654495 DOI: 10.1038/s41598-023-47485-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 11/14/2023] [Indexed: 11/19/2023] Open
Abstract
Critical limb ischemia (CLI) is caused by severe arterial blockage with reduction of blood flow. The aim of this study was to determine whether therapeutic angiogenesis using cellular communication network factor 2 (CCN2) would be useful for treating CLI in an animal model. Recombinant CCN2 was administered intramuscularly to male C57BL/6J mice with hind limb ischemia. The therapeutic effect was evaluated by monitoring blood flow in the ischemic hind limb. In an in vivo assay, CCN2 restored blood flow in the ischemic hind limb by promoting both angiogenesis and lymphangiogenesis. VEGF-A and VEGF-C expression levels increased in the ischemic limb after treatment with CCN2. In an in vitro assay, CCN2 promoted proliferation of vascular and lymphatic endothelial cells, and it upregulated expression of Tgfb1 followed by expression of Vegfc and Vegfr3 in lymphatic endothelial cells under hypoxia. Suppression of Tgfb1 did not affect the activity of CCN2, activation of the TGF-β/SMAD signaling pathway, or expression of Vegfr3 in lymphatic endothelial cells. In summary, treatment using recombinant CCN2 could be a promising therapeutic strategy for CLI.
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Affiliation(s)
- Masayuki Shimizu
- Department of Cardiovascular Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
- Center for Regenerative Medicine, Fukuoka University Hospital, Fukuoka, Japan
| | - Gumpei Yoshimatsu
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan.
- Center for Regenerative Medicine, Fukuoka University Hospital, Fukuoka, Japan.
| | - Yuichi Morita
- Department of Cardiovascular Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
- Center for Regenerative Medicine, Fukuoka University Hospital, Fukuoka, Japan
| | - Tomoko Tanaka
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
- Center for Regenerative Medicine, Fukuoka University Hospital, Fukuoka, Japan
| | - Naoaki Sakata
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
- Center for Regenerative Medicine, Fukuoka University Hospital, Fukuoka, Japan
| | - Hideaki Tagashira
- Department of Integrative Physiology, Graduate School of Medicine, Akita University, Akita, Japan
| | - Hideichi Wada
- Department of Cardiovascular Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Shohta Kodama
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan.
- Center for Regenerative Medicine, Fukuoka University Hospital, Fukuoka, Japan.
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Liu Y, Ma YH, Yang JW, Man JW, Wang HB, Li Y, Liang C, Cao JL, Chen SY, Li KP, Yang L. Rethinking neutrophil extracellular traps. Int Immunopharmacol 2023; 124:110834. [PMID: 37625368 DOI: 10.1016/j.intimp.2023.110834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/07/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023]
Abstract
Neutrophils are a major subset of leukocytes in human circulating blood. In some circumstances, neutrophils release neutrophil extracellular traps (NETs). lnitially, NETs were considered to have a strong antibacterial capacity. However, currently, NETs have been shown to have a pivotal impact on various diseases. Different stimulators induce the production of different types of NETs, and their biological functions and modes of clearance do not appear to be the same. In this review, we will discuss several important issues related to NETs in order to better understand the relationship between NETs and diseases, as well as how to utilize the characteristics of NETs for disease treatment.
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Affiliation(s)
- Yi Liu
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China
| | - Yu-Hua Ma
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China
| | - Jian-Wei Yang
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China
| | - Jiang-Wei Man
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China
| | - Hua-Bin Wang
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China
| | - Yi Li
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China
| | - Cheng Liang
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China
| | - Jin-Long Cao
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China
| | - Si-Yu Chen
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China
| | - Kun-Peng Li
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China
| | - Li Yang
- Department of Urology, The Second Hospital of Lanzhou University, Gansu Province Clinical Research Center for Urology, Second Clinical School Lanzhou University, China.
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Chen M, Li L, Chai Y, Yang Y, Ma S, Pu X, Chen Y. Vitamin D can ameliorate premature ovarian failure by inhibiting neutrophil extracellular traps: A review. Medicine (Baltimore) 2023; 102:e33417. [PMID: 37000081 PMCID: PMC10063315 DOI: 10.1097/md.0000000000033417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 04/01/2023] Open
Abstract
The etiology of premature ovarian failure (POF) is mainly related to inflammatory diseases, autoimmune diseases, and tumor radiotherapy and chemotherapy; however, its specific pathogenesis has not been clarified. Vitamin D (VD), a fat-soluble vitamin, is an essential steroid hormone in the human body. Neutrophil extracellular traps (NETs) are meshwork structures that are formed when neutrophils are stimulated by inflammation and other factors and are closely associated with autoimmune and inflammatory diseases. Notably, VD inhibits NET formation and intervenes in the development of POF in terms of inflammatory and immune responses, oxidative stress, and tissue fibrosis. Therefore, this study aimed to theorize the relationship between NETs, VD, and POF and provide new ideas and targets for the pathogenesis and clinical treatment of POF.
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Affiliation(s)
- Menglu Chen
- Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Lailai Li
- Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Yihui Chai
- Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Yuqi Yang
- Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Sibu Ma
- Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Xiang Pu
- Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Yunzhi Chen
- Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
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Rowe CJ, Walsh SA, Dragon AH, Rhodes AM, Pak OL, Ronzier E, Levi B, Potter BK, Spreadborough PJ, Davis TA. Tourniquet-induced ischemia creates increased risk of organ dysfunction and mortality following delayed limb amputation. Injury 2023:S0020-1383(23)00179-1. [PMID: 36906480 DOI: 10.1016/j.injury.2023.02.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/06/2023] [Accepted: 02/23/2023] [Indexed: 03/13/2023]
Abstract
Tourniquets are critical for the control of traumatic extremity hemorrhage. In this study, we sought to determine, in a rodent blast-related extremity amputation model, the impact of prolonged tourniquet application and delayed limb amputation on survival, systemic inflammation, and remote end organ injury. Adult male Sprague Dawley rats were subjected to blast overpressure (120±7 kPa) and orthopedic extremity injury consisting femur fracture, one-minute soft tissue crush injury (20 psi), ± 180 min of tourniquet-induced hindlimb ischemia followed by delayed (60 min of reperfusion) hindlimb amputation (dHLA). All animals in the non-tourniquet group survived whereas 7/21 (33%) of the animals in the tourniquet group died within the first 72 h with no deaths observed between 72 and 168 h post-injury. Tourniquet induced ischemia-reperfusion injury (tIRI) likewise resulted in a more robust systemic inflammation (cytokines and chemokines) and concomitant remote pulmonary, renal, and hepatic dysfunction (BUN, CR, ALT. AST, IRI/inflammation-mediated genes). These results indicate prolonged tourniquet application and dHLA increases risk of complications from tIRI, leading to greater risk of local and systemic complications including organ dysfunction or death. We thus need enhanced strategies to mitigate the systemic effects of tIRI, particularly in the military prolonged field care (PFC) setting. Furthermore, future work is needed to extend the window within which tourniquet deflation to assess limb viability remains feasible, as well as new, limb-specific or systemic point of care tests to better assess the risks of tourniquet deflation with limb preservation in order to optimize patient care and save both limb and life.
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Affiliation(s)
- Cassie J Rowe
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, United States; The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, United States
| | - Sarah A Walsh
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, United States
| | - Andrea H Dragon
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, United States; The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, United States
| | - Alisha M Rhodes
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, United States; The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, United States
| | - Olivia L Pak
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, United States; The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, United States
| | - Elsa Ronzier
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, United States; The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, United States
| | - Benjamin Levi
- Center for Organogenesis Research and Trauma, University of Texas Southwestern, Dallas, TX, United States
| | - Benjamin K Potter
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, United States
| | - Philip J Spreadborough
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, United States; Academic Department of Military Surgery and Trauma, Royal Centre for Defence Medicine, Birmingham, United Kingdom
| | - Thomas A Davis
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, United States.
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10
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Hu J, Pan M, Wang Y, Zhu Y, Wang M. Functional plasticity of neutrophils after low- or high-dose irradiation in cancer treatment - A mini review. Front Immunol 2023; 14:1169670. [PMID: 37063873 PMCID: PMC10098001 DOI: 10.3389/fimmu.2023.1169670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 03/20/2023] [Indexed: 04/18/2023] Open
Abstract
Over the last several decades, radiotherapy has been considered the primary treatment option for a broad range of cancer types, aimed at prolonging patients' survival and slowing down tumor regression. However, therapeutic outcomes of radiotherapy remain limited, and patients suffer from relapse shortly after radiation. Neutrophils can initiate an immune response to infection by releasing cytokines and chemokines to actively combat pathogens. In tumor immune microenvironment, tumor-derived signals reprogram neutrophils and induce their heterogeneity and functional versatility to promote or inhibit tumor growth. In this review, we present an overview of the typical phenotypes of neutrophils that emerge after exposure to low- and high-dose radiation. These phenotypes hold potential for developing synergistic therapeutic strategies to inhibit immunosuppressive activity and improve the antitumor effects of neutrophils to render radiation therapy as a more effective strategy for cancer patients, through tumor microenvironment modulation.
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Affiliation(s)
- Jing Hu
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - Mingyue Pan
- Faculty of Law, University of Freiburg, Freiburg, Germany
| | - Yixi Wang
- Department of Rehabilitation Medicine, Chongqing University Jiangjin Hospital, Chongqing University, Chongqing, China
| | - Yujie Zhu
- Department of Obstetrics and Gynecology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Meidan Wang
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- *Correspondence: Meidan Wang,
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11
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Torres-Ruiz J, Alcalá-Carmona B, Alejandre-Aguilar R, Gómez-Martín D. Inflammatory myopathies and beyond: The dual role of neutrophils in muscle damage and regeneration. Front Immunol 2023; 14:1113214. [PMID: 36923415 PMCID: PMC10008923 DOI: 10.3389/fimmu.2023.1113214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 02/15/2023] [Indexed: 03/03/2023] Open
Abstract
Skeletal muscle is one of the most abundant tissues of the human body and is responsible for the generation of movement. Muscle injuries can lead to severe disability. Skeletal muscle is characterized by an important regeneration capacity, which is possible due to the interaction between the myoblasts and immune cells. Neutrophils are fundamental as inducers of muscle damage and as promoters of the initial inflammatory response which eventually allows the muscle repair. The main functions of the neutrophils are phagocytosis, respiratory burst, degranulation, and the production of neutrophil extracellular traps (NETs). An overactivation of neutrophils after muscle injuries may lead to an expansion of the initial damage and can hamper the successful muscle repair. The importance of neutrophils as inducers of muscle damage extends beyond acute muscle injury and recently, neutrophils have become more relevant as part of the immunopathogenesis of chronic muscle diseases like idiopathic inflammatory myopathies (IIM). This heterogeneous group of systemic autoimmune diseases is characterized by the presence of muscle inflammation with a variable amount of extramuscular features. In IIM, neutrophils have been found to have a role as biomarkers of disease activity, and their expansion in peripheral blood is related to certain clinical features like interstitial lung disease (ILD) and cancer. On the other hand, low density granulocytes (LDG) are a distinctive subtype of neutrophils characterized by an enhanced production of NETs. These cells along with the NETs have also been related to disease activity and certain clinical features like ILD, vasculopathy, calcinosis, dermatosis, and cutaneous ulcers. The role of NETs in the immunopathogenesis of IIM is supported by an enhanced production and deficient degradation of NETs that have been observed in patients with dermatomyositis and anti-synthetase syndrome. Finally, new interest has arisen in the study of other phenotypes of LDG with a phenotype corresponding to myeloid-derived suppressor cells, which were also found to be expanded in patients with IIM and were related to disease activity. In this review, we discuss the role of neutrophils as both orchestrators of muscle repair and inducers of muscle damage, focusing on the immunopathogenesis of IIM.
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Affiliation(s)
- Jiram Torres-Ruiz
- Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Beatriz Alcalá-Carmona
- Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.,Laboratory of Entomology, Department of Parasitology, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Ricardo Alejandre-Aguilar
- Laboratory of Entomology, Department of Parasitology, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Diana Gómez-Martín
- Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
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12
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Zhang F, Li Y, Wu J, Zhang J, Cao P, Sun Z, Wang W. The role of extracellular traps in ischemia reperfusion injury. Front Immunol 2022; 13:1022380. [PMID: 36211432 PMCID: PMC9533173 DOI: 10.3389/fimmu.2022.1022380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 08/31/2022] [Indexed: 11/29/2022] Open
Abstract
In response to strong signals, several types of immune cells release extracellular traps (ETs), which are web-like structures consisting of DNA decorated with various protein substances. This process is most commonly observed in neutrophils. Over the past two decades, ET formation has been recognized as a unique mechanism of host defense and pathogen destruction. However, the role of ETs in sterile inflammation has only been studied extensively in recent years. Ischemia reperfusion injury (IRI) is a type of sterile inflammatory injury. Several studies have reported that ETs have an important role in IRI in various organs. In this review, we describe the release of ETs by various types of immune cells and focus on the mechanism underlying the formation of neutrophil ETs (NETs). In addition, we summarize the role of ETs in IRI in different organs and their effects on tumors. Finally, we discuss the value of ETs as a potential therapeutic target for organ IRI and present possible challenges in conducting studies on IRI-related ETs as well as future research directions and prospects.
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Affiliation(s)
- Feilong Zhang
- Department of Urology, Beijing Chao-yang Hospital, Capital Medical University, Beijing, China
- Institute of Urology, Capital Medical University, Beijing, China
| | - Yuqing Li
- Department of Urology, Beijing Chao-yang Hospital, Capital Medical University, Beijing, China
- Institute of Urology, Capital Medical University, Beijing, China
| | - Jiyue Wu
- Department of Urology, Beijing Chao-yang Hospital, Capital Medical University, Beijing, China
- Institute of Urology, Capital Medical University, Beijing, China
| | - Jiandong Zhang
- Department of Urology, Beijing Chao-yang Hospital, Capital Medical University, Beijing, China
- Institute of Urology, Capital Medical University, Beijing, China
| | - Peng Cao
- Department of Urology, Beijing Chao-yang Hospital, Capital Medical University, Beijing, China
- Institute of Urology, Capital Medical University, Beijing, China
| | - Zejia Sun
- Department of Urology, Beijing Chao-yang Hospital, Capital Medical University, Beijing, China
- Institute of Urology, Capital Medical University, Beijing, China
| | - Wei Wang
- Department of Urology, Beijing Chao-yang Hospital, Capital Medical University, Beijing, China
- Institute of Urology, Capital Medical University, Beijing, China
- *Correspondence: Wei Wang,
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13
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Koepke LG, Simon F, Heuer A. Neutrophil Extracellular Traps (NETs) im Gefäßsystem. GEFÄSSCHIRURGIE 2022; 27:444-448. [PMID: 36118259 PMCID: PMC9466318 DOI: 10.1007/s00772-022-00934-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 09/01/2022] [Indexed: 12/01/2022]
Affiliation(s)
- L.-G. Koepke
- Klinik und Poliklinik für Unfallchirurgie und Orthopädie, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Deutschland
| | - F. Simon
- Klinik für Gefäß- und Endovaskularchirurgie, Universitätsklinikum Düsseldorf, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Deutschland
| | - A. Heuer
- Klinik und Poliklinik für Unfallchirurgie und Orthopädie, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Deutschland
- Mildred Scheel Nachwuchszentrum HaTriCS4, Universitäres Cancer Centrum Hamburg (UCCH), Hamburg, Deutschland
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14
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Deng P, Qiu S, Liao F, Jiang Y, Zheng C, Zhu Q. Contusion concomitant with ischemia injury aggravates skeletal muscle necrosis and hinders muscle functional recovery. Exp Biol Med (Maywood) 2022; 247:1577-1590. [PMID: 35775612 PMCID: PMC9554171 DOI: 10.1177/15353702221102376] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Contusion concomitant with ischemia injury to skeletal muscles is common in civilian and battlefield trauma. Despite their clinical importance, few experimental studies on these injuries are reported. The present study established a rat skeletal muscle contusion concomitant with ischemia injury model to identify skeletal muscle alterations compared with contusion injury or ischemia injury. Macroscopic and microscopic morphological evaluation showed that contusion concomitant with ischemia injury aggravated muscle edema and hematoxylin-eosin (HE) injury score at 24 h postinjury. Serum creatine kinase (CK) and lactate dehydrogenase (LDH) levels, together with gastrocnemius muscle (GM) tumor necrosis factor-alpha (TNF-α) content elevated at 24 h postinjury too. During the 28-day follow-up, electrophysiological and contractile impairment was more severe in the contusion concomitant with ischemia injury group. In addition, contusion concomitant with ischemia injury decreased the percentage of larger (600-3000 μm2) fibers and increased the fibrotic area and collagen I proportion in the GM. Smaller proportions of Pax7+ and MyoD+ satellite cells (SCs) were observed in the contusion concomitant with ischemia injury group at 7 days postinjury. In conclusion, contusion concomitant with ischemia injury to skeletal muscle not only aggravates early muscle fiber necrosis but also hinders muscle functional recovery by impairing SC differentiation and exacerbating fibrosis during skeletal muscle repair.
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Affiliation(s)
- Peijun Deng
- Department of Microsurgery, Orthopedic Trauma and Hand Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,Guangdong Province Engineering Laboratory for Soft Tissue Biofabrication, Guangzhou 510080, China,Guangdong Provincial Peripheral Nerve Tissue Engineering and Technology Research Center, Guangzhou 510080, China,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou 510080, China
| | - Shuai Qiu
- Department of Microsurgery, Orthopedic Trauma and Hand Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,Guangdong Province Engineering Laboratory for Soft Tissue Biofabrication, Guangzhou 510080, China,Guangdong Provincial Peripheral Nerve Tissue Engineering and Technology Research Center, Guangzhou 510080, China,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou 510080, China
| | - Fawei Liao
- Department of Microsurgery, Orthopedic Trauma and Hand Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,Guangdong Province Engineering Laboratory for Soft Tissue Biofabrication, Guangzhou 510080, China,Guangdong Provincial Peripheral Nerve Tissue Engineering and Technology Research Center, Guangzhou 510080, China,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou 510080, China
| | - Yifei Jiang
- Department of Microsurgery, Orthopedic Trauma and Hand Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,Guangdong Province Engineering Laboratory for Soft Tissue Biofabrication, Guangzhou 510080, China,Guangdong Provincial Peripheral Nerve Tissue Engineering and Technology Research Center, Guangzhou 510080, China,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou 510080, China
| | - Canbin Zheng
- Department of Microsurgery, Orthopedic Trauma and Hand Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,Guangdong Province Engineering Laboratory for Soft Tissue Biofabrication, Guangzhou 510080, China,Guangdong Provincial Peripheral Nerve Tissue Engineering and Technology Research Center, Guangzhou 510080, China,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou 510080, China
| | - Qingtang Zhu
- Department of Microsurgery, Orthopedic Trauma and Hand Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,Guangdong Province Engineering Laboratory for Soft Tissue Biofabrication, Guangzhou 510080, China,Guangdong Provincial Peripheral Nerve Tissue Engineering and Technology Research Center, Guangzhou 510080, China,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou 510080, China,Qingtang Zhu.
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15
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A β1-40 Oligomers Trigger Neutrophil Extracellular Trap Formation through TLR4- and NADPH Oxidase-Dependent Pathways in Age-Related Macular Degeneration. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6489923. [PMID: 35761872 PMCID: PMC9233592 DOI: 10.1155/2022/6489923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 05/07/2022] [Accepted: 05/11/2022] [Indexed: 11/24/2022]
Abstract
Neutrophils participate in the advancement of the human innate immune system and respond to perceived endogenous and exogenous threats. As a response mechanism, neutrophil extracellular traps (NETs) form near pathogens and surrounding tissues during an immune response. Drusen is an important marker of Age-Related Macular Degeneration (AMD) and plays an important role in the course of AMD. Aβ1-40 is the main component of drusen. However, the relationship between NETs and AMD or Aβ1-40 is unclear. Here, we found elevated levels of NETs in the serum of AMD patients and elevated levels in the serum of mouse models. We also observed the accumulation of neutrophils in the mouse retina. In addition, the production of NETs was inhibited by PAD4 inhibitors, which can alleviate chronic inflammation. Moreover, we confirmed that Aβ1-40 can induce NETs formation via the Toll-like receptor 4 (TLR4) and neutrophil NADPH oxidase (NOX) pathways. Our study confirmed that the formation of NETs is induced by Aβ1–40, and the results suggest that NETs may play a vital role in AMD pathogenesis.
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16
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NETosis in ischemic/reperfusion injuries: An organ-based review. Life Sci 2021; 290:120158. [PMID: 34822798 DOI: 10.1016/j.lfs.2021.120158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/11/2021] [Accepted: 11/13/2021] [Indexed: 10/19/2022]
Abstract
Neutrophil extracellular trap (NETosis), the web-like structures induced by neutrophil death, is an important inflammatory mechanism of the immune system leading to reactive oxygen species production/coagulopathy, endothelial dysfunction, atherosclerosis, and ischemia. NETosis exerts its role through different mechanisms such as triggering Toll-like receptors, inflammatory cytokines, platelet aggregation, neutrophil activation/infiltration, and vascular impairment. NETosis plays a key role in the prognosis of coronary artery disease, ischemic injury of kidney, lung, gastrointestinal tract and skeletal muscles. In this review, we explored the molecular mechanisms involved in NETosis, and ischemic/reperfusion injuries in body organs.
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17
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Leucht P, Einhorn TA. What's New in Musculoskeletal Basic Science. J Bone Joint Surg Am 2021; 103:00004623-990000000-00355. [PMID: 34637402 DOI: 10.2106/jbjs.21.01065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Philipp Leucht
- Departments of Orthopaedic Surgery and Cell Biology, NYU Grossman School of Medicine, New York, NY
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18
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Tulangekar A, Sztal TE. Inflammation in Duchenne Muscular Dystrophy-Exploring the Role of Neutrophils in Muscle Damage and Regeneration. Biomedicines 2021; 9:biomedicines9101366. [PMID: 34680483 PMCID: PMC8533596 DOI: 10.3390/biomedicines9101366] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/22/2021] [Accepted: 09/26/2021] [Indexed: 12/13/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a severe and progressive, X-linked, neuromuscular disorder caused by mutations in the dystrophin gene. In DMD, the lack of functional dystrophin protein makes the muscle membrane fragile, leaving the muscle fibers prone to damage during contraction. Muscle degeneration in DMD patients is closely associated with a prolonged inflammatory response, and while this is important to stimulate regeneration, inflammation is also thought to exacerbate muscle damage. Neutrophils are one of the first immune cells to be recruited to the damaged muscle and are the first line of defense during tissue injury or infection. Neutrophils can promote inflammation by releasing pro-inflammatory cytokines and compounds, including myeloperoxidase (MPO) and neutrophil elastase (NE), that lead to oxidative stress and are thought to have a role in prolonging inflammation in DMD. In this review, we provide an overview of the roles of the innate immune response, with particular focus on mechanisms used by neutrophils to exacerbate muscle damage and impair regeneration in DMD.
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19
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Liu Y, Qin X, Lei Z, Chai H, Huang Z, Wu Z. Tetramethylpyrazine inhibits neutrophil extracellular traps formation and alleviates hepatic ischemia/reperfusion injury in rat liver transplantation. Exp Cell Res 2021; 406:112719. [PMID: 34273405 DOI: 10.1016/j.yexcr.2021.112719] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 10/20/2022]
Abstract
Hepatic ischemia/reperfusion injury (IRI) is an adverse effect for liver transplantation which is characterized by immune response mediated inflammation. Recent studies report that neutrophil extracellular traps (NETs) are implicated in hepatic IRI. The aim of this study was to explore the mechanism of action of tetramethylpyrazine (TMP), the main chemical composition of Ligusticum chuanxiong in treatment of ischemic related diseases. Data showed that hepatic IRI increases the leak of alanine aminotransferase (ALT) and aspartate transaminase (AST), and stimulates formation of NETs. Extracellular DNA/NETs assay, hematoxylin-eosin (HE) staining, immunofluorescence assay, terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) and Western blot assay, showed that TMP significantly reduces formation of NETs and alleviates hepatic IRI. Moreover, TMP and Diphenyleneiodonium (DPI) suppressed ROS production in neutrophils. In addition, analysis showed that activation of NADPH oxidase plays a role in formation of NETs triggered by hepatic IRI. Notably, TMP inhibited formation of NETs though inhibition of NADPH oxidase. Additionally, Combination treatment using TMP and DPI was more effective compared with monotherapy of either of the two drugs. These findings show that combination therapy using TMP and DPI is a promising method for treatment hepatic IRI.
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Affiliation(s)
- Yanyao Liu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaoyan Qin
- Department of General Surgery of Yuzhong District, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, PR China
| | - Zilun Lei
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hao Chai
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zuotian Huang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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