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Neutrophils in Intestinal Inflammation: What We Know and What We Could Expect for the Near Future. GASTROINTESTINAL DISORDERS 2022. [DOI: 10.3390/gidisord4040025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Neutrophils are short-lived cells that play a crucial role in inflammation. As in other tissues, these polymorphonuclear phagocytes are involved in the intestinal inflammatory response, on the one hand, contributing to the activation and recruitment of other immune cells, but on the other hand, facilitating intestinal mucosa repair by releasing mediators that aid in the resolution of inflammation. Even though these responses are helpful in physiological conditions, excessive recruitment of activated neutrophils in the gut correlates with increased mucosal damage and severe symptoms in patients with inflammatory bowel disease (IBD) and pre-clinical models of colitis. Thus, there is growing interest in controlling their biology to generate novel therapeutic approaches capable of reducing exacerbated intestinal inflammation. However, the beneficial and harmful effects of neutrophils on intestinal inflammation are still controversial. With this review, we summarise and discuss the most updated literature showing how neutrophils (and neutrophil extracellular traps) contribute to developing and resolving intestinal inflammation and their putative use as therapeutic targets.
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Neutrophil-Epithelial Crosstalk During Intestinal Inflammation. Cell Mol Gastroenterol Hepatol 2022; 14:1257-1267. [PMID: 36089244 PMCID: PMC9583449 DOI: 10.1016/j.jcmgh.2022.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/02/2022] [Accepted: 09/02/2022] [Indexed: 01/31/2023]
Abstract
Neutrophils are the most abundant leukocyte population in the human circulatory system and are rapidly recruited to sites of inflammation. Neutrophils play a multifaceted role in intestinal inflammation, as they contribute to the elimination of invading pathogens. Recently, their role in epithelial restitution has been widely recognized; however, they are also associated with bystander tissue damage. The intestinal epithelium provides a physical barrier to prevent direct contact of luminal contents with subepithelial tissues, which is extremely important for the maintenance of intestinal homeostasis. Numerous studies have demonstrated that transepithelial migration of neutrophils is closely related to disease symptoms and disruption of crypt architecture in inflammatory bowel disease and experimental colitis. There has been growing interest in how neutrophils interact with the epithelium under inflammatory conditions. Most studies focus on the effects of neutrophils on intestinal epithelial cells; however, the effects of intestinal epithelial cells on neutrophils during intestinal inflammation need to be well-established. Based on these data, we have summarized recent articles on the role of neutrophil-epithelial interactions in intestinal inflammation, particularly highlighting the epithelium-derived molecular regulators that mediate neutrophil recruitment, transepithelial migration, and detachment from the epithelium, as well as the functional consequences of their crosstalk. A better understanding of these molecular events may help develop novel therapeutic targets for mitigating the deleterious effects of neutrophils in inflammatory bowel disease.
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A proteomic and RNA-seq transcriptomic dataset of capsaicin-aggravated mouse chronic colitis model. Sci Data 2022; 9:549. [PMID: 36071055 PMCID: PMC9452536 DOI: 10.1038/s41597-022-01637-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 08/11/2022] [Indexed: 11/08/2022] Open
Abstract
An inappropriate diet is a risk factor for inflammatory bowel disease (IBD). It is established that the consumption of spicy food containing capsaicin is strongly associated with the recurrence and worsening of IBD symptoms. Moreover, capsaicin can induce neutrophil accumulation in the lamina propria, contributing to disease deterioration. To uncover the potential signaling pathway involved in capsaicin-induced relapse and the effects of capsaicin on neutrophil activation, we performed proteomic analyses of intestinal tissues from chronic colitis mice following capsaicin administration and transcriptomic analyses of dHL-60 cells after capsaicin stimulation. Collectively, these multiomic analyses identified proteins and genes that may be involved in disease flares, thereby providing new insights for future research.
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Li JC, Zou XM, Yang SF, Jin JQ, Zhu L, Li CJ, Yang H, Zhang AG, Zhao TQ, Chen CY. Neutrophil extracellular traps participate in the development of cancer-associated thrombosis in patients with gastric cancer. World J Gastroenterol 2022; 28:3132-3149. [PMID: 36051331 PMCID: PMC9331535 DOI: 10.3748/wjg.v28.i26.3132] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 01/20/2022] [Accepted: 03/16/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The development of venous thromboembolism (VTE) is associated with high mortality among gastric cancer (GC) patients. Neutrophil extracellular traps (NETs) have been reported to correlate with the prothrombotic state in some diseases, but are rarely reported in GC patients.
AIM To investigate the effect of NETs on the development of cancer-associated thrombosis in GC patients.
METHODS The levels of NETs in blood and tissue samples of patients were analyzed by ELISA, flow cytometry, and immunofluorescence staining. NET generation and hypercoagulation of platelets and endothelial cells (ECs) in vitro were observed by immunofluorescence staining. NET procoagulant activity (PCA) was determined by fibrin formation and thrombin–antithrombin complex (TAT) assays. Thrombosis in vivo was measured in a murine model induced by flow stenosis in the inferior vena cava (IVC).
RESULTS NETs were likely to form in blood and tissue samples of GC patients compared with healthy individuals. In vitro studies showed that GC cells and their conditioned medium, but not gastric mucosal epithelial cells, stimulated NET release from neutrophils. In addition, NETs induced a hypercoagulable state of platelets by upregulating the expression of phosphatidylserine and P-selectin on the cells. Furthermore, NETs stimulated the adhesion of normal platelets on glass surfaces. Similarly, NETs triggered the conversion of ECs to hypercoagulable phenotypes by downregulating the expression of their intercellular tight junctions but upregulating that of tissue factor. Treatment of normal platelets or ECs with NETs augmented the level of plasma fibrin formation and the TAT complex. In the models of IVC stenosis, tumor-bearing mice showed a stronger ability to form thrombi, and NETs abundantly accumulated in the thrombi of tumor-bearing mice compared with control mice. Notably, the combination of deoxyribonuclease I, activated protein C, and sivelestat markedly abolished the PCA of NETs.
CONCLUSION GC-induced NETs strongly increased the risk of VTE development both in vitro and in vivo. NETs are potential therapeutic targets in the prevention and treatment of VTE in GC patients.
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Affiliation(s)
- Jia-Cheng Li
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
- The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Xiao-Ming Zou
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Shi-Feng Yang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
- The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Jia-Qi Jin
- The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Harbin 150001, Heilongjiang Province, China
- Department of Neurosurgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Lei Zhu
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
- The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Chang-Jian Li
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Hao Yang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
- The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - An-Ge Zhang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
- The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Tian-Qi Zhao
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Chong-Yan Chen
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
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Hong L, Chen G, Cai Z, Liu H, Zhang C, Wang F, Xiao Z, Zhong J, Wang L, Wang Z, Cui W. Balancing Microthrombosis and Inflammation via Injectable Protein Hydrogel for Inflammatory Bowel Disease. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2200281. [PMID: 35524641 PMCID: PMC9284187 DOI: 10.1002/advs.202200281] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 04/01/2022] [Indexed: 05/17/2023]
Abstract
Emerging evidence indicates that a vicious cycle between inflammation and microthrombosis catalyzes the pathogenesis of inflammatory bowel disease (IBD). Over-stimulated inflammation triggers a coagulation cascade and leads to microthrombosis, which further complicates the injury through tissue hypoxia and ischemia. Herein, an injectable protein hydrogel with anti-thrombosis and anti-inflammation competency is developed to impede this cycle, cross-linked by silver ion mediated metal-ligand coordination and electronic interaction with sulfhydryl functionalized bovine serum albumin and heparin, respectively. The ex vivo experiments show that the hydrogel, HEP-Ag-BSA, exhibits excellent self-healing ability, injectability, biocompatibility, and sustained drug release. HEP-Ag-BSA also demonstrates anti-coagulation and anti-inflammation abilities via coagulation analysis and lipopolysaccharide stimulation assay. The in vivo imaging confirms the longer retention time of HEP-Ag-BSA at inflammatory sites than in normal mucosa owing to electrostatic interactions. The in vivo study applying a mouse model with colitis also reveals that HEP-Ag-BSA can robustly inhibit inflammatory microthrombosis with reduced bleeding risk. This versatile protein hydrogel platform can definitively hinder the "inflammation and microthrombosis" cycle, providing a novel integrated approach against IBD.
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Affiliation(s)
- Liwen Hong
- Department of GastroenterologyRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
- Department of OrthopaedicsShanghai Key Laboratory for Prevention and Treatment of Bone and Joint DiseasesShanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
| | - Gaoxian Chen
- Department of Pharmacology and Chemical BiologyInstitute of Molecular MedicineSchool of MedicineShanghai Jiao Tong UniversityShanghai200025P. R. China
| | - Zhengwei Cai
- Department of OrthopaedicsShanghai Key Laboratory for Prevention and Treatment of Bone and Joint DiseasesShanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
| | - Hua Liu
- Department of GastroenterologyRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
| | - Chen Zhang
- Department of GastroenterologyRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
| | - Fei Wang
- Department of OrthopaedicsShanghai Key Laboratory for Prevention and Treatment of Bone and Joint DiseasesShanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
| | - Zeyu Xiao
- Department of Pharmacology and Chemical BiologyInstitute of Molecular MedicineSchool of MedicineShanghai Jiao Tong UniversityShanghai200025P. R. China
| | - Jie Zhong
- Department of GastroenterologyRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
| | - Lei Wang
- Department of GastroenterologyRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
- Department of GeriatricsRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
| | - Zhengting Wang
- Department of GastroenterologyRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
| | - Wenguo Cui
- Department of OrthopaedicsShanghai Key Laboratory for Prevention and Treatment of Bone and Joint DiseasesShanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai200025P. R. China
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Chen F, Liu Y, Shi Y, Zhang J, Liu X, Liu Z, Lv J, Leng Y. The emerging role of neutrophilic extracellular traps in intestinal disease. Gut Pathog 2022; 14:27. [PMID: 35733158 PMCID: PMC9214684 DOI: 10.1186/s13099-022-00497-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 05/19/2022] [Indexed: 11/10/2022] Open
Abstract
Neutrophil extracellular traps (NETs) are extracellular reticular fibrillar structures composed of DNA, histones, granulins and cytoplasmic proteins that are delivered externally by neutrophils in response to stimulation with various types of microorganisms, cytokines and host molecules, etc. NET formation has been extensively demonstrated to trap, immobilize, inactivate and kill invading microorganisms and acts as a form of innate response against pathogenic invasion. However, NETs are a double-edged sword. In the event of imbalance between NET formation and clearance, excessive NETs not only directly inflict tissue lesions, but also recruit pro-inflammatory cells or proteins that promote the release of inflammatory factors and magnify the inflammatory response further, driving the progression of many human diseases. The deleterious effects of excessive release of NETs on gut diseases are particularly crucial as NETs are more likely to be disrupted by neutrophils infiltrating the intestinal epithelium during intestinal disorders, leading to intestinal injury, and in addition, NETs and their relevant molecules are capable of directly triggering the death of intestinal epithelial cells. Within this context, a large number of NETs have been reported in several intestinal diseases, including intestinal infections, inflammatory bowel disease, intestinal ischemia–reperfusion injury, sepsis, necrotizing enterocolitis, and colorectal cancer. Therefore, the formation of NET would have to be strictly monitored to prevent their mediated tissue damage. In this review, we summarize the latest knowledge on the formation mechanisms of NETs and their pathophysiological roles in a variety of intestinal diseases, with the aim of providing an essential directional guidance and theoretical basis for clinical interventions in the exploration of mechanisms underlying NETs and targeted therapies.
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Affiliation(s)
- Feng Chen
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - Yongqiang Liu
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China.,Department of Anesthesiology, First Hospital of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - Yajing Shi
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - Jianmin Zhang
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - Xin Liu
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China.,Department of Anesthesiology, First Hospital of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - Zhenzhen Liu
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - Jipeng Lv
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - Yufang Leng
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China. .,Department of Anesthesiology, First Hospital of Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China.
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57
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Smith AP, Creagh EM. Caspase-4 and -5 Biology in the Pathogenesis of Inflammatory Bowel Disease. Front Pharmacol 2022; 13:919567. [PMID: 35712726 PMCID: PMC9194562 DOI: 10.3389/fphar.2022.919567] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/11/2022] [Indexed: 12/14/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic relapsing inflammatory disease of the gastrointestinal tract, associated with high levels of inflammatory cytokine production. Human caspases-4 and -5, and their murine ortholog caspase-11, are essential components of the innate immune pathway, capable of sensing and responding to intracellular lipopolysaccharide (LPS), a component of Gram-negative bacteria. Following their activation by LPS, these caspases initiate potent inflammation by causing pyroptosis, a lytic form of cell death. While this pathway is essential for host defence against bacterial infection, it is also negatively associated with inflammatory pathologies. Caspases-4/-5/-11 display increased intestinal expression during IBD and have been implicated in chronic IBD inflammation. This review discusses the current literature in this area, identifying links between inflammatory caspase activity and IBD in both human and murine models. Differences in the expression and functions of caspases-4, -5 and -11 are discussed, in addition to mechanisms of their activation, function and regulation, and how these mechanisms may contribute to the pathogenesis of IBD.
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Affiliation(s)
- Aoife P Smith
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Emma M Creagh
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
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Shen W, Oladejo AO, Ma X, Jiang W, Zheng J, Imam BH, Wang S, Wu X, Ding X, Ma B, Yan Z. Inhibition of Neutrophil Extracellular Traps Formation by Cl-Amidine Alleviates Lipopolysaccharide-Induced Endometritis and Uterine Tissue Damage. Animals (Basel) 2022; 12:1151. [PMID: 35565576 PMCID: PMC9100562 DOI: 10.3390/ani12091151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/17/2022] [Accepted: 04/27/2022] [Indexed: 02/05/2023] Open
Abstract
Endometritis is a common disease that affects the production in dairy cows and leads to severe losses in the dairy industry. Neutrophil extracellular traps (NETs) formation promotes pathogenic invasions of the lumen of the tissue, leading to inflammatory diseases such as mastitis, pancreatitis, and septic infection. However, research that could show the relationship between NETs and endometritis is scarce. Cl-amidine has been shown to ameliorate the disease squealing and clinical manifestation in various disease models. In this study, we investigated the role of NETs in LPS-triggered endometritis in rats and evaluated the therapeutic efficiency of Cl-amidine. An LPS-induced endometritis model in rats was established and found that the formation of NETs can be detected in the rat's uterine tissues in vivo. In addition, Cl-amidine treatment can inhibit NETs construction in LPS-induced endometritis in rats. Myeloperoxidase (MPO) activity assay indicated that Cl-amidine treatment remarkably alleviated the inflammatory cell infiltrations and attenuated the damage to the uterine tissue. The Western blot results indicated that Cl-amidine decreased the expression of citrullinated Histone H3 (Cit-H3) and high-mobility group box 1 protein (HMGB1) protein in LPS-induced rat endometritis. The ELISA test indicated that Cl-amidine treatment significantly inhibited the expression of the pro-inflammatory cytokines IL-1β, IL-6, and TNF-α. The NETs were determined by Quant-iTTMPicoGreen dsDNA kit®, which indicated that Cl-amidine significantly inhibited the NETs in rat serum. All results showed that Cl-amidine effectively reduced the expression of Cit-H3 and HMGB1 proteins by inhibiting the formation of NETs, thereby attenuating the inflammatory response to LPS-induced endometritis in rats. Hence, Cl-amidine could be a potential candidate for the treatment of endometritis.
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Affiliation(s)
- Wenxiang Shen
- Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Science, Lanzhou 730050, China; (W.S.); (A.O.O.); (X.M.); (W.J.); (J.Z.); (B.H.I.); (S.W.); (X.W.); (X.D.)
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang 712100, China
| | - Ayodele Olaolu Oladejo
- Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Science, Lanzhou 730050, China; (W.S.); (A.O.O.); (X.M.); (W.J.); (J.Z.); (B.H.I.); (S.W.); (X.W.); (X.D.)
- Department of Animal Health Technology, Oyo State College of Agriculture and Technology, Igboora 201103, Nigeria
| | - Xiaoyu Ma
- Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Science, Lanzhou 730050, China; (W.S.); (A.O.O.); (X.M.); (W.J.); (J.Z.); (B.H.I.); (S.W.); (X.W.); (X.D.)
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010010, China
| | - Wei Jiang
- Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Science, Lanzhou 730050, China; (W.S.); (A.O.O.); (X.M.); (W.J.); (J.Z.); (B.H.I.); (S.W.); (X.W.); (X.D.)
| | - Juanshan Zheng
- Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Science, Lanzhou 730050, China; (W.S.); (A.O.O.); (X.M.); (W.J.); (J.Z.); (B.H.I.); (S.W.); (X.W.); (X.D.)
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang 712100, China
| | - Bereket Habte Imam
- Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Science, Lanzhou 730050, China; (W.S.); (A.O.O.); (X.M.); (W.J.); (J.Z.); (B.H.I.); (S.W.); (X.W.); (X.D.)
- Department of Veterinary Science, Hamelmalo Agricultural College, Keren P.O. Box 397, Eritrea
| | - Shengyi Wang
- Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Science, Lanzhou 730050, China; (W.S.); (A.O.O.); (X.M.); (W.J.); (J.Z.); (B.H.I.); (S.W.); (X.W.); (X.D.)
| | - Xiaohu Wu
- Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Science, Lanzhou 730050, China; (W.S.); (A.O.O.); (X.M.); (W.J.); (J.Z.); (B.H.I.); (S.W.); (X.W.); (X.D.)
| | - Xuezhi Ding
- Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Science, Lanzhou 730050, China; (W.S.); (A.O.O.); (X.M.); (W.J.); (J.Z.); (B.H.I.); (S.W.); (X.W.); (X.D.)
| | - Baohua Ma
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang 712100, China
| | - Zuoting Yan
- Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Science, Lanzhou 730050, China; (W.S.); (A.O.O.); (X.M.); (W.J.); (J.Z.); (B.H.I.); (S.W.); (X.W.); (X.D.)
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Nie H, Xiong Q, Lan G, Song C, Yu X, Chen L, Wang D, Ren T, Chen Z, Liu X, Zhou Y. Sivelestat Alleviates Atherosclerosis by Improving Intestinal Barrier Function and Reducing Endotoxemia. Front Pharmacol 2022; 13:838688. [PMID: 35444551 PMCID: PMC9014170 DOI: 10.3389/fphar.2022.838688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 03/08/2022] [Indexed: 12/11/2022] Open
Abstract
Emerging evidence suggests that atherosclerosis, one of the leading phenotypes of cardiovascular diseases, is a chronic inflammatory disease. During the atherosclerotic process, immune cells play critical roles in vascular inflammation and plaque formation. Meanwhile, gastrointestinal disorder is considered a risk factor in mediating the atherosclerotic process. The present study aimed to utilize sivelestat, a selective inhibitor of neutrophil elastase, to investigate its pharmacological benefits on atherosclerosis and disclose the gastrointestinal–vascular interaction. The activation of intestinal neutrophil was increased during atherosclerotic development in Western diet-fed ApoE-/- mice. Administration of sivelestat attenuated atherosclerotic phenotypes, including decreasing toxic lipid accumulation, vascular monocyte infiltration, and inflammatory cytokines. Sivelestat decreased intestinal permeability and endotoxemia in atherosclerotic mice. Mechanistically, sivelestat upregulated the expression of zonula occludens-1 in the atherosclerotic mice and recombinant neutrophil elastase protein-treated intestinal epithelial cells. Meanwhile, treatment of sivelestat suppressed the intestinal expression of inflammatory cytokines and NF-κB activity. In contrast, administration of lipopolysaccharides abolished the anti-atherosclerotic benefits of sivelestat in the Western diet-fed ApoE-/- mice. Further clinical correlation study showed that the circulating endotoxin level and intestinal neutrophil elastase activity were positively correlated with carotid intima-medial thickness in recruited subjects. In conclusion, sivelestat had pharmacological applications in protection against atherosclerosis, and intestinal homeostasis played one of the critical roles in atherosclerotic development.
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Affiliation(s)
- Hezhongrong Nie
- Center of Clinical Laboratory, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Qingquan Xiong
- Department of General Surgery, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Guanghui Lan
- Department of General Surgery, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Chunli Song
- Center of Clinical Laboratory, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Xiaohong Yu
- Center of Clinical Laboratory, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Lei Chen
- Center of Clinical Laboratory, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Daming Wang
- Center of Clinical Laboratory, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Tingyu Ren
- Center of Clinical Laboratory, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Zeyan Chen
- Center of Clinical Laboratory, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Xintong Liu
- Center of Clinical Laboratory, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Yiwen Zhou
- Center of Clinical Laboratory, Shenzhen Hospital, Southern Medical University, Shenzhen, China
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60
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Factors Associated with Platelet Activation-Recent Pharmaceutical Approaches. Int J Mol Sci 2022; 23:ijms23063301. [PMID: 35328719 PMCID: PMC8955963 DOI: 10.3390/ijms23063301] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 02/06/2023] Open
Abstract
Platelets are at the forefront of human health and disease following the advances in their research presented in past decades. Platelet activation, their most crucial function, although beneficial in the case of vascular injury, may represent the initial step for thrombotic complications characterizing various pathologic states, primarily atherosclerotic cardiovascular diseases. In this review, we initially summarize the structural and functional characteristics of platelets. Next, we focus on the process of platelet activation and its associated factors, indicating the potential molecular mechanisms involving inflammation, endothelial dysfunction, and miRs. Finally, an overview of the available antiplatelet agents is being portrayed, together with agents possessing off-set platelet-inhibitory actions, while an extensive presentation of drugs under investigation is being given.
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Maronek M, Gardlik R. The Citrullination-Neutrophil Extracellular Trap Axis in Chronic Diseases. J Innate Immun 2022; 14:393-417. [PMID: 35263752 PMCID: PMC9485962 DOI: 10.1159/000522331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 01/25/2022] [Indexed: 11/19/2022] Open
Abstract
Citrullination of proteins is crucial for the formation of neutrophil extracellular traps (NETs) − strands of nuclear DNA expulsed in the extracellular environment along with antimicrobial proteins in order to halt the spread of pathogens. Paradoxically, NETs may be immunogenic and contribute to inflammation. It is known that for the externalization of DNA, a group of enzymes called peptidyl arginine deiminases (PADs) is required. Current research often looks at citrullination, NET formation, PAD overexpression, and extracellular DNA (ecDNA) accumulation in chronic diseases as separate events. In contrast, we propose that citrullination can be viewed as the primary mechanism of autoimmunity, for instance by the formation of anti-citrullinated protein antibodies (ACPAs) but also as a process contributing to chronic inflammation. Therefore, citrullination could be at the center, connecting and impacting multiple inflammatory diseases in which ACPAs, NETs, or ecDNA have already been documented. In this review, we aimed to highlight the importance of citrullination in the etiopathogenesis of a number of chronic diseases and to explore the diagnostic, prognostic, and therapeutic potential of the citrullination-NET axis.
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Affiliation(s)
- Martin Maronek
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia
| | - Roman Gardlik
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia
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You Q, Shen Y, Wu Y, Li Y, Liu C, Huang F, Gu HF, Wu J. Neutrophil Extracellular Traps Caused by Gut Leakage Trigger the Autoimmune Response in Nonobese Diabetic Mice. Front Immunol 2022; 12:711423. [PMID: 35111148 PMCID: PMC8801438 DOI: 10.3389/fimmu.2021.711423] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 12/27/2021] [Indexed: 01/14/2023] Open
Abstract
Increased formation of neutrophil extracellular traps (NETs) is associated with gut leakage in type 1 diabetes (T1D). To explore the mechanism of how enteropathy exacerbated by NETs triggers pancreatic autoimmunity in T1D, we carried out a correlation analysis for NET formation with gut barrier functions and autoimmunity in nonobese diabetic (NOD) mice. Inducing chronic colitis or knocking out of peptidyl arginine deiminase type 4 (PAD4) in NOD mice were used to further study the effect of NET formation on the progression of T1D. Microbial alterations in Deferribacteres and Proteobacteria, along with the loss of gut barrier function, were found to be associated with increased endotoxin and abnormal formation of NETs in NOD mice. Both DSS-induced colitis and knockout of PAD4 in NOD mice indicated that PAD4-dependent NET formation was involved in the aggravation of gut barrier dysfunction, the production of autoantibodies, and the activation of enteric autoimmune T cells, which then migrated to pancreatic lymph nodes (PLNs) and caused self-damage. The current study thus provides evidence that PAD4-dependent NET formation is engaged in leaky gut triggering pancreatic autoimmunity and suggests that either degradation of NETs or inhibition of NET formation may be helpful for innovative therapeutic interventions in T1D.
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Affiliation(s)
- Qi You
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yiming Shen
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yiling Wu
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yuyan Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Chang Liu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Fengjie Huang
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Harvest F Gu
- Center for Pathophysiology, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Jie Wu
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
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Shen Y, You Q, Wu Y, Wu J. Inhibition of PAD4-mediated NET formation by cl-amidine prevents diabetes development in nonobese diabetic mice. Eur J Pharmacol 2022; 916:174623. [PMID: 34767782 DOI: 10.1016/j.ejphar.2021.174623] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 10/30/2021] [Accepted: 11/03/2021] [Indexed: 12/19/2022]
Abstract
Many evidences indicated that neutrophil extracellular traps (NETs) play pathogenic roles in type 1 diabetes (T1D). Peptidylarginine deiminases 4 (PAD4) has been proved to be indispensable for generation of NETs. In the current study, we investigated whether oral administration of cl-amidine, an effective inhibitor of PAD4, protects non-obese diabetic (NOD) mice from T1D development. Female NOD mice were orally administrated with cl-amidine (5 μg/g body weight) from the age of 8 weeks up to 16 weeks. It showed that cl-amidine inhibit NET formation in vitro and in vivo. The onset of T1D was delayed nearly 8 weeks and the incidence of disease was significantly decreased in cl-amidine treated mice compared with the control group. Moreover, cl-amidine decreased the serum levels of anti-citrullinated peptide antibody (ACPA) and anti-neutrophil cytoplasmic antibodies (ANCA) in NOD mice. Also, it decreased generation of T1D autoantibodies such as glutamic acid decarboxylase antibody (GADA), tyrosine phosphatase-related islet antigen-2 antibody (IA2A) and zinc transporter 8 antibody (ZnT8A), which were strongly correlated with the reduced serum PAD4 and MPO-DNA levels. Furthermore, cl-amidine administration inhibited pancreatic inflammation and increased frequency of regulatory T cells in pancreatic lymph nodes (PLNs). In addition, cl-amidine improved gut barrier dysfunction and decreased the serum level of lipopolysaccharide (LPS), which was positively correlated with the NETs markers (PAD4 and MPO-DNA) and T1D autoantibody IA2A. In conclusion, our data showed that orally delivery of cl-amidine effectively prevent T1D development and suggested inhibition of PAD4-dependent NET formation as a potential way of clinical treatment in T1D.
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MESH Headings
- Administration, Oral
- Animals
- Autoantibodies/blood
- Autoimmune Diseases/prevention & control
- Blood Glucose/drug effects
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Experimental/prevention & control
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 1/prevention & control
- Extracellular Traps/drug effects
- Female
- Inflammation/prevention & control
- Intestines/drug effects
- Mice, Inbred NOD
- Ornithine/administration & dosage
- Ornithine/analogs & derivatives
- Ornithine/pharmacology
- Protective Agents/administration & dosage
- Protective Agents/pharmacology
- Protein-Arginine Deiminase Type 4/antagonists & inhibitors
- Protein-Arginine Deiminase Type 4/blood
- Protein-Arginine Deiminase Type 4/metabolism
- T-Lymphocytes, Regulatory/drug effects
- T-Lymphocytes, Regulatory/metabolism
- Tight Junctions/drug effects
- Mice
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Affiliation(s)
- Yiming Shen
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Qi You
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yiling Wu
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Jie Wu
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China.
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Herrero-Cervera A, Soehnlein O, Kenne E. Neutrophils in chronic inflammatory diseases. Cell Mol Immunol 2022; 19:177-191. [PMID: 35039631 PMCID: PMC8803838 DOI: 10.1038/s41423-021-00832-3] [Citation(s) in RCA: 187] [Impact Index Per Article: 93.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 12/13/2021] [Indexed: 12/12/2022] Open
Abstract
Chronic inflammation is a component of many disease conditions that affect a large group of individuals worldwide. Chronic inflammation is characterized by persistent, low-grade inflammation and is increased in the aging population. Neutrophils are normally the first responders to acute inflammation and contribute to the resolution of inflammation. However, in chronic inflammation, the role of neutrophils is less well understood and has been described as either beneficial or detrimental, causing tissue damage and enhancing the immune response. Emerging evidence suggests that neutrophils are important players in several chronic diseases, such as atherosclerosis, diabetes mellitus, nonalcoholic fatty liver disease and autoimmune disorders. This review will highlight the interaction of neutrophils with other cells in the context of chronic inflammation, the contribution of neutrophils to selected chronic inflammatory diseases, and possible future therapeutic strategies.
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Affiliation(s)
- Andrea Herrero-Cervera
- Institute for Experimental Pathology, Center for Molecular Biology of Inflammation, Westfälische Wilhelms-Universität Münster, Münster, Germany.
| | - Oliver Soehnlein
- Institute for Experimental Pathology, Center for Molecular Biology of Inflammation, Westfälische Wilhelms-Universität Münster, Münster, Germany
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Ellinor Kenne
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
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Citrullination in the pathology of inflammatory and autoimmune disorders: recent advances and future perspectives. Cell Mol Life Sci 2022; 79:94. [PMID: 35079870 PMCID: PMC8788905 DOI: 10.1007/s00018-022-04126-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 12/29/2021] [Accepted: 01/03/2022] [Indexed: 02/06/2023]
Abstract
Numerous
post-translational modifications (PTMs) govern the collective metabolism of a cell through altering the structure and functions of proteins. The action of the most prevalent PTMs, encompassing phosphorylation, methylation, acylations, ubiquitination and glycosylation is well documented. A less explored protein PTM, conversion of peptidylarginine to citrulline, is the subject of this review. The process of citrullination is catalysed by peptidylarginine deiminases (PADs), a family of conserved enzymes expressed in a variety of human tissues. Accumulating evidence suggest that citrullination plays a significant role in regulating cellular metabolism and gene expression by affecting a multitude of pathways and modulating the chromatin status. Here, we will discuss the biochemical nature of arginine citrullination, the enzymatic machinery behind it and also provide information on the pathological consequences of citrullination in the development of inflammatory diseases (rheumatoid arthritis, multiple sclerosis, psoriasis, systemic lupus erythematosus, periodontitis and COVID-19), cancer and thromboembolism. Finally, developments on inhibitors against protein citrullination and recent clinical trials providing a promising therapeutic approach to inflammatory disease by targeting citrullination are discussed.
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Li G, Lin J, Zhang C, Gao H, Lu H, Gao X, Zhu R, Li Z, Li M, Liu Z. Microbiota metabolite butyrate constrains neutrophil functions and ameliorates mucosal inflammation in inflammatory bowel disease. Gut Microbes 2022; 13:1968257. [PMID: 34494943 PMCID: PMC8437544 DOI: 10.1080/19490976.2021.1968257] [Citation(s) in RCA: 146] [Impact Index Per Article: 73.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Host-microbial cross-talk plays a crucial role in maintenance of gut homeostasis. However, how microbiota-derived metabolites, e.g., butyrate, regulate functions of neutrophils in the pathogenesis of inflammatory bowel disease (IBD) remains elusive. We sought to investigate the effects of butyrate on IBD neutrophils and elucidate the therapeutic potential in regulating mucosal inflammation. Peripheral neutrophils were isolated from IBD patients and healthy donors, and profiles of proinflammatory cytokines and chemokines were determined by qRT-PCR and ELISA, respectively. The migration and release of neutrophil extracellular traps (NETs) were studied by a Transwell model and immunofluorescence, respectively. The in vivo role of butyrate in regulating IBD neutrophils was evaluated in a DSS-induced colitis model in mice. We found that butyrate significantly inhibited IBD neutrophils to produce proinflammatory cytokines, chemokines, and calprotectins. Blockade of GPCR signaling with pertussis toxin (PTX) did not interfere the effects whereas pan-histone deacetylase (HDAC) inhibitor, trichostatin A (TSA) effectively mimicked the role of butyrate. Furthermore, in vitro studies confirmed that butyrate suppressed neutrophil migration and formation of NETs from both CD and UC patients. RNA sequencing analysis revealed that the immunomodulatory effects of butyrate on IBD neutrophils were involved in leukocyte activation, regulation of innate immune response and response to oxidative stress. Consistently, oral administration of butyrate markedly ameliorated mucosal inflammation in DSS-induced murine colitis through inhibition of neutrophil-associated immune responses such as proinflammatory mediators and NET formation. Our data thus reveal that butyrate constrains neutrophil functions and may serve as a novel therapeutic potential in the treatment of IBD.
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Affiliation(s)
- Gengfeng Li
- Center for IBD Research, Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jian Lin
- Center for IBD Research, Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Cui Zhang
- Center for IBD Research, Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Han Gao
- Center for IBD Research, Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Huiying Lu
- Center for IBD Research, Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiang Gao
- Center for IBD Research, Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ruixin Zhu
- Center for IBD Research, Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China,Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Zhitao Li
- Division of Immunology, School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Mingsong Li
- Department of Gastroenterology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China,Mingsong Li Department of Gastroenterology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhanju Liu
- Center for IBD Research, Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China,Division of Immunology, School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China,CONTACT Zhanju Liu Center for IBD Research, Department of Gastroenterology, The Shanghai Tenth People’s Hospital, Tongji University, No. 301 Yanchang Road, Shanghai200072, China
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S100A8/A9 Is a Marker for the Release of Neutrophil Extracellular Traps and Induces Neutrophil Activation. Cells 2022; 11:cells11020236. [PMID: 35053354 PMCID: PMC8773660 DOI: 10.3390/cells11020236] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/22/2021] [Accepted: 01/06/2022] [Indexed: 12/12/2022] Open
Abstract
Neutrophils are the most abundant innate immune cells in the circulation and they are the first cells recruited to sites of infection or inflammation. Almost half of the intracellular protein content in neutrophils consists of S100A8 and S100A9, though there has been controversy about their actual localization. Once released extracellularly, these proteins are thought to act as damage-associated molecular patterns (DAMPs), though their mechanism of action is not well understood. These S100 proteins mainly form heterodimers (S100A8/A9, also known as calprotectin) and this heterocomplex is recognized as a useful biomarker for several inflammatory diseases. We observed that S100A8/A9 is highly present in the cytoplasmic fraction of neutrophils and is not part of the granule content. Furthermore, we found that S100A8/A9 was not released in parallel with granular content but upon the formation of neutrophil extracellular traps (NETs). Accordingly, neutrophils of patients with chronic granulomatous disease, who are deficient in phorbol 12-myristate 13-acetate (PMA)-induced NETosis, did not release S100A8/A9 upon PMA stimulation. Moreover, we purified S100A8/A9 from the cytoplasmic fraction of neutrophils and found that S100A8/A9 could induce neutrophil activation, including adhesion and CD11b upregulation, indicating that this DAMP might amplify neutrophil activation.
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Du J, Zhang J, Chen X, Zhang S, Zhang C, Liu H, Li Y, Li M, Wu X, Xiang M, Wang C, Liu L, Wang C, Fang S, Shi J. Neutrophil extracellular traps induced by pro-inflammatory cytokines enhance procoagulant activity in NASH patients. Clin Res Hepatol Gastroenterol 2022; 46:101697. [PMID: 33848669 DOI: 10.1016/j.clinre.2021.101697] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/17/2021] [Accepted: 03/24/2021] [Indexed: 02/04/2023]
Abstract
BACKGROUND Nonalcoholic steatohepatitis (NASH) patients are at a high risk of developing venous thromboembolism, with a high rate of morbidity and mortality. The role of neutrophil extracellular traps (NETs) in procoagulant activity (PCA) in patients with NASH remains unclear. Our study aimed to investigate the formation of NETs in NASH patients stimulated by specific pro-inflammatory factors. Moreover, we evaluated the pivotal role of NETs in the induction of hypercoagulability in NASH and the interaction between NETs and endothelial injury. METHOD The levels of the NETs biomarkers were evaluated in the plasma samples of 27 NASH patients and 18 healthy subjects. The formation of NETs was visualized using immunofluorescence microscopy. The PCA of the NETs was assessed using coagulation time, purified coagulation complex, and fibrin formation assays. Confocal microscopy was further used to evaluate the interactions between the NETs and HUVECs. RESULTS The levels of NETs markers in the plasma of NASH patients were significantly higher than healthy controls. NETs derived from NASH enhanced thrombin and fibrin formation and significantly reduced CT (p<0.05). The mixture of IL-6 and TNF-α triggered the NETs release in the plasma rather than them alone. Additionally, the NETs exerted cytotoxic effects on the endothelial cells, converting them to a procoagulant and pro-inflammatory phenotype, and DNase I could reverse these effects. CONCLUSION Our results revealed the primary role of NETs in promoting the hypercoagulable state in NASH patients. Methods that prevent the formation of NETs may be a novel approach for the prevention and treatment of NASH.
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Affiliation(s)
- Jingwen Du
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Jinming Zhang
- Department of Hematology and Rheumatology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang, China
| | - Xiaojing Chen
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Shuoqi Zhang
- Department of Neurology, The Second Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang, China
| | - Cong Zhang
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Huan Liu
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Yueyue Li
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Mengdi Li
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Xiaoming Wu
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Mengqi Xiang
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Chengyue Wang
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Langjiao Liu
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Chunli Wang
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China
| | - Shaohong Fang
- The Key Laboratory of Myocardial Ischemia, Ministry of Education, Harbin, Heilongjiang, China.
| | - Jialan Shi
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, Heilongjiang, China; Department of Research, VA Boston Healthcare System, Harvard Medical School, Boston, MA, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 1400 VFW Parkway, West Roxbury, Boston, MA 02132, USA.
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Jalodia R, Kolli U, Braniff RG, Tao J, Abu YF, Chupikova I, Moidunny S, Ramakrishnan S, Roy S. Morphine mediated neutrophil infiltration in intestinal tissue play essential role in histological damage and microbial dysbiosis. Gut Microbes 2022; 14:2143225. [PMID: 36409161 PMCID: PMC9683065 DOI: 10.1080/19490976.2022.2143225] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 09/01/2022] [Accepted: 10/17/2022] [Indexed: 11/23/2022] Open
Abstract
The gut microbial ecosystem exhibits a complex bidirectional communication with the host and is one of the key contributing factors in determining mucosal immune homeostasis or an inflammatory state. Opioid use has been established to induce gut microbial dysbiosis consistent with increased intestinal tissue inflammation. In this study, we investigated the role of infiltrated immune cells in morphine-induced intestinal tissue damage and gut microbial dysbiosis in mice. Results reveal a significant increase in chemokine expression in intestinal tissues followed by increased neutrophil infiltration post morphine treatment which is direct consequence of a dysbiotic microbiome since the effect is attenuated in antibiotics treated animals and in germ-free mice. Neutrophil neutralization using anti-Ly6G monoclonal antibody showed a significant decrease in tissue damage and an increase in tight junction protein organization. 16S rRNA sequencing on intestinal samples highlighted the role of infiltrated neutrophils in modulating microbial community structure by providing a growth benefit for pathogenic bacteria, such as Enterococcus, and simultaneously causing a significant depletion of commensal bacteria, such as Lactobacillus. Taken together, we provide the first direct evidence that neutrophil infiltration contributes to morphine-induced intestinal tissue damage and gut microbial dysbiosis. Our findings implicate that inhibition of neutrophil infiltration may provide therapeutic benefits against gastrointestinal dysfunctions associated with opioid use.
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Affiliation(s)
- Richa Jalodia
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Udhghatri Kolli
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | | | - Junyi Tao
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Yaa Fosuah Abu
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Irina Chupikova
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Shamsudheen Moidunny
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Sundaram Ramakrishnan
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Sabita Roy
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
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Zhou Y, Tao W, Shen F, Du W, Xu Z, Liu Z. The Emerging Role of Neutrophil Extracellular Traps in Arterial, Venous and Cancer-Associated Thrombosis. Front Cardiovasc Med 2021; 8:786387. [PMID: 34926629 PMCID: PMC8674622 DOI: 10.3389/fcvm.2021.786387] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 10/29/2021] [Indexed: 12/16/2022] Open
Abstract
Neutrophils play a vital role in the formation of arterial, venous and cancer-related thrombosis. Recent studies have shown that in a process known as NETosis, neutrophils release proteins and enzymes complexed to DNA fibers, collectively called neutrophil extracellular traps (NETs). Although NETs were originally described as a way for the host to capture and kill bacteria, current knowledge indicates that NETs also play an important role in thrombosis. According to recent studies, the destruction of vascular microenvironmental homeostasis and excessive NET formation lead to pathological thrombosis. In vitro experiments have found that NETs provide skeletal support for platelets, red blood cells and procoagulant molecules to promote thrombosis. The protein components contained in NETs activate the endogenous coagulation pathway to promote thrombosis. Therefore, NETs play an important role in the formation of arterial thrombosis, venous thrombosis and cancer-related thrombosis. This review will systematically summarize and explain the study of NETs in thrombosis in animal models and in vivo experiments to provide new targets for thrombosis prevention and treatment.
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Affiliation(s)
- Yilu Zhou
- Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Weimin Tao
- Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Fuyi Shen
- Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Weijia Du
- Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zhendong Xu
- Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zhiqiang Liu
- Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
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Wang S, Huang J, Liu F, Tan KS, Deng L, Lin Y, Tan W. Isosteviol Sodium Exerts Anti-Colitic Effects on BALB/c Mice with Dextran Sodium Sulfate-Induced Colitis Through Metabolic Reprogramming and Immune Response Modulation. J Inflamm Res 2021; 14:7107-7130. [PMID: 34992409 PMCID: PMC8709797 DOI: 10.2147/jir.s344990] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/08/2021] [Indexed: 12/14/2022] Open
Abstract
PURPOSE Inflammatory bowel diseases (IBDs) are global health problems that are associated with immune regulation, but clinical IBDs treatment is currently inadequate. Effective preventive or therapeutic methods for immune disorders rely on controlling the function of immune cells. Isosteviol sodium (STV-Na) has antioxidant activity, but the therapeutic effect of STV-Na against IBD remain undocumented. Herein, we investigated the therapeutic effect of STV-Na in mice models with IBDs. METHODS Mice received 3.5% DSS for 7 days to establish IBD models. Intraperitoneal STV-Na was given 2 days before DSS and lasted for 9 days. Commercially available drugs used in treating IBDs (5-aminosalicylic acid, dexamethasone, and infliximab) were used as positive controls. Samples were collected 7 days after colitis induction. Histopathological score, biochemical parameters, molecular biology methods, and metabolomics were used for evaluating the therapeutic effect of STV-Na. RESULTS Our data revealed that STV-Na could significantly alleviate colon inflammation in mice with colitis. Specifically, STV-Na treatment improved body weight loss, increased colon length, decreased histology scores, and restored the hematological parameters of mice with colitis. The untargeted metabolomics analysis revealed that metabolic profiles were restored by STV-Na treatment. Furthermore, STV-Na therapy suppressed the number of CD68 macrophages and F4/80 cell infiltration. And STV-Na suppressed M1 and M2 macrophage numbers along with the mRNA expressions of proinflammatory cytokines. Moreover, STV-Na administration increased the number of regulatory T (Treg) cells while decreasing Th1/Th2/Th17 cell counts in the spleen. Additionally, STV-Na treatment restored intestinal barrier disruption in DSS-triggered colitis tissues by ameliorating the TJ proteins, increasing goblet cell proportions, and mucin protein production, and decreasing the permeability to FITC-dextran, which was accompanied by decreased plasma LPS and DAO contents. CONCLUSION These results indicate that STV-Na can ameliorate colitis by modulating immune responses along with metabolic reprogramming, and could therefore be a promising therapeutic strategy for IBDs.
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Affiliation(s)
- Shanping Wang
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, People’s Republic of China
| | - Jiandong Huang
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, People’s Republic of China
| | - Fei Liu
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, People’s Republic of China
| | - Keai Sinn Tan
- College of Pharmacy, Jinan University, Guangzhou, People’s Republic of China
- Post-Doctoral Innovation Site, Jinan University, Yuanzhi Health Technology Co, Ltd, Zhuhai, People’s Republic of China
| | - Liangjun Deng
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, People’s Republic of China
| | - Yue Lin
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, People’s Republic of China
| | - Wen Tan
- Post-Doctoral Innovation Site, Jinan University, Yuanzhi Health Technology Co, Ltd, Zhuhai, People’s Republic of China
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
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72
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Ke X, Hu T, Jiang M. cGAS-STING signaling pathway in gastrointestinal inflammatory disease and cancers. FASEB J 2021; 36:e22029. [PMID: 34907606 DOI: 10.1096/fj.202101199r] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/14/2021] [Accepted: 10/19/2021] [Indexed: 12/12/2022]
Abstract
Cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) signaling pathway has emerged as a key DNA-sensing machinery in innate immunity. Activation of cGAS-STING signaling pathway mediates the production of interferons and proinflammatory cytokines. Although cGAS-STING signaling pathway shows critical function in the maintenance of gut homeostasis, overactive cGAS-STING signaling pathway leads to gastrointestinal (GI) inflammation. Harnessing the effect and mechanism of the cGAS-STING signaling pathway could be beneficial for the development of novel strategies for the treatment of GI diseases. This review presents recent advances regarding the role of cGAS-STING signaling pathway in GI inflammatory disease and cancers and describes perspective therapeutic strategies targeting the signaling pathway.
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Affiliation(s)
- Xinxin Ke
- The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Tao Hu
- The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Mizu Jiang
- The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
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73
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Investigation of H 2S Donor Treatment on Neutrophil Extracellular Traps in Experimental Colitis. Int J Mol Sci 2021; 22:ijms222312729. [PMID: 34884536 PMCID: PMC8657984 DOI: 10.3390/ijms222312729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/18/2021] [Accepted: 11/22/2021] [Indexed: 11/17/2022] Open
Abstract
Inflammatory bowel diseases (IBD) are chronic, immune-mediated disorders, which affect the gastrointestinal tract with intermittent ulceration. It is increasingly clear that neutrophil extracellular traps (NETs) seem to have a role in IBD; however, the associated pathogenesis is still not known. Furthermore, several conventional therapies are available against IBD, although these might have side effects. Our current study aimed to investigate the effects of hydrogen sulfide (H2S) treatment on NETs formation and on the expression of inflammatory mediators in experimental rat colitis. To model IBD, 2,4,6-trinitrobenzenesulfonic acid (TNBS) was administered intracolonically (i.c.) to Wistar-Harlan male rats. Animals were treated (2 times/day) with H2S donor Lawesson's reagent per os. Our results showed that H2S treatment significantly decreased the extent of colonic lesions. Furthermore, the expression of members of NETs formation: peptidyl arginine deiminase 4 (PAD4), citrullinated histone H3 (citH3), myeloperoxidase (MPO) and inflammatory regulators, such as nuclear transcription factor-kappa B (NF-κB) and high-mobility group box 1 (HMGB1) were reduced in H2S treated group compared to TNBS. Additionally, H2S donor administration elevated the expression of ubiquitin C-terminal hydroxylase L1 (UCHL-1), a potential anti-inflammatory mediator. Taken together, our results showed that H2S may exert anti-inflammatory effect through the inhibition of NETs formation, which suggests a new therapeutic approach against IBD.
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74
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Chen H, Wu X, Xu C, Lin J, Liu Z. Dichotomous roles of neutrophils in modulating pathogenic and repair processes of inflammatory bowel diseases. PRECISION CLINICAL MEDICINE 2021; 4:246-257. [PMID: 35692862 PMCID: PMC8982532 DOI: 10.1093/pcmedi/pbab025] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 02/06/2023] Open
Abstract
Neutrophils are considered as complex innate immune cells and play a critical role in maintaining intestinal mucosal homeostasis. They exert robust pro-inflammatory effects and recruit other immune cells in the acute phase of pathogen infection and intestinal inflammation, but paradoxically, they also limit exogenous microbial invasion and facilitate mucosal restoration. Hyperactivation or dysfunction of neutrophils results in abnormal immune responses, leading to multiple autoimmune and inflammatory diseases including systemic lupus erythematosus, rheumatoid arthritis, and inflammatory bowel diseases (IBD). As a refractory intestinal inflammatory disease, the pathogenesis and progression of IBD are associated with complicated immune response processes in which neutrophils are profoundly involved. However, the consensus on potential roles of neutrophils in modulating pathogenic and repair processes of IBD remains not fully understood. Accumulated infiltrating neutrophils cross the epithelial barrier and contribute to microbial dysbiosis, aggravated intestinal architectural damage, compromised resolution of intestinal inflammation and increased risk of thrombosis during IBD. Paradoxically, activated neutrophils are also associated with effective elimination of invaded microbiota, promoted angiogenesis and tissue restoration of gut mucosa in IBD. Here, we discuss the beneficial and detrimental roles of neutrophils in the onset and resolution of intestinal mucosal inflammation, hoping to provide a precise overview of neutrophil functions in the pathogenesis of IBD.
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Affiliation(s)
- Huimin Chen
- Center for Inflammatory Bowel Disease Research, the Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Xiaohan Wu
- Center for Inflammatory Bowel Disease Research, the Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Chunjin Xu
- Department of Gastroenterology, the First People's Hospital of Shangqiu City Affiliated to Xinxiang Medical University, Shangqiu 476100, China
| | - Jian Lin
- Department of Gastroenterology, Affiliated Hospital of Putian University, Putian 351106, China
| | - Zhanju Liu
- Center for Inflammatory Bowel Disease Research, the Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
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75
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Netting Gut Disease: Neutrophil Extracellular Trap in Intestinal Pathology. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5541222. [PMID: 34712384 PMCID: PMC8548149 DOI: 10.1155/2021/5541222] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 07/04/2021] [Accepted: 09/29/2021] [Indexed: 12/26/2022]
Abstract
Many gut disease etiologies are attributed to the presence of robust inflammatory cell recruitment. The recruitment of neutrophils plays a vital role in inflammatory infiltration. Neutrophils have various antimicrobial effector mechanisms, including phagocytosis, oxidative burst, and degranulation. It is suggested that neutrophils could release neutrophil extracellular traps (NETs) to kill pathogens. However, recent evidence indicates that neutrophil infiltration within the gut is associated with disrupted local immunological microenvironment and impaired epithelial barrier. Growing evidence implies that NETs are involved in the progression of many diseases, including cancer, diabetes, thrombosis, and autoimmune disease. Increased NET formation was found in acute or chronic conditions, including infection, sterile inflammation, cancer, and ischemia/reperfusion injury (IRI). Here, we present a comprehensive review of recent advances in the understanding of NETs, focusing on their effects in gut disease. We also discuss NETs as a potential therapeutic target in gut disease.
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76
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Inflammatory Mediators of Platelet Activation: Focus on Atherosclerosis and COVID-19. Int J Mol Sci 2021; 22:ijms222011170. [PMID: 34681830 PMCID: PMC8539848 DOI: 10.3390/ijms222011170] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/09/2021] [Accepted: 10/15/2021] [Indexed: 12/16/2022] Open
Abstract
Background: Atherosclerotic cardiovascular diseases are characterized by a dysregulated inflammatory and thrombotic state, leading to devastating complications with increased morbidity and mortality rates. Summary: In this review article, we present the available evidence regarding the impact of inflammation on platelet activation in atherosclerosis. Key messages: In the context of a dysfunctional vascular endothelium, structural alterations by means of endothelial glycocalyx thinning or functional modifications through impaired NO bioavailability and increased levels of von Willebrand factor result in platelet activation. Moreover, neutrophil-derived mediators, as well as neutrophil extracellular traps formation, have been implicated in the process of platelet activation and platelet-leukocyte aggregation. The role of pro-inflammatory cytokines is also critical since their receptors are also situated in platelets while TNF-α has also been found to induce inflammatory, metabolic, and bone marrow changes. Additionally, important progress has been made towards novel concepts of the interaction between inflammation and platelet activation, such as the toll-like receptors, myeloperoxidase, and platelet factor-4. The accumulating evidence is especially important in the era of the coronavirus disease-19 pandemic, characterized by an excessive inflammatory burden leading to thrombotic complications, partially mediated by platelet activation. Lastly, recent advances in anti-inflammatory therapies point towards an anti-thrombotic effect secondary to diminished platelet activation.
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77
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Wu H, Hu T, Hao H, Hill MA, Xu C, Liu Z. Inflammatory bowel disease and cardiovascular diseases: a concise review. EUROPEAN HEART JOURNAL OPEN 2021; 2:oeab029. [PMID: 35919661 PMCID: PMC9242064 DOI: 10.1093/ehjopen/oeab029] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 08/26/2021] [Accepted: 10/12/2021] [Indexed: 12/12/2022]
Abstract
Cardiovascular diseases (CVDs) remain the leading cause of morbidity and mortality despite aggressive treatment of traditional risk factors. Chronic inflammation plays an important role in the initiation and progression of CVDs. Inflammatory bowel disease (IBD) is a systemic state of inflammation exhibiting increased levels of pro-inflammatory cytokines including tumour necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-6. Importantly, IBD is associated with increased risk for CVDs especially in women and young adults, including coronary artery disease, stroke, thromboembolic diseases, and arrhythmias. Potential mechanisms underlying the increased risk for CVDs in IBD patients include increased levels of inflammatory cytokines and oxidative stress, altered platelet function, hypercoagulability, decreased numbers of circulating endothelial progenitor cells, endothelial dysfunction, and possible interruption of gut microbiota. Although IBD does not appear to exacerbate the traditional risk factors for CVDs, including hypertension, hyperlipidaemia, diabetes mellitus, and obesity, aggressive risk stratifications are important for primary and secondary prevention of CVDs for IBD patients. Compared to 5-aminosalicylates and corticosteroids, anti-TNF-α therapy in IBD patients was consistently associated with decreasing cardiovascular events. In the absence of contraindications, low-dose aspirin and statins appear to be beneficial for IBD patients. Low-molecular-weight heparin is also recommended for patients who are hospitalized with acute IBD flares without major bleeding risk. A multidisciplinary team approach should be considered for the management of IBD patients.
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Affiliation(s)
- Hao Wu
- Center for Precision Medicine and Division of Cardiovascular Medicine, Department of Medicine, University of Missouri School of Medicine, One Hospital Drive, Columbia, MO 65212, USA,Department of Gastroenterology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha 410013, China
| | - Tingzi Hu
- Center for Precision Medicine and Division of Cardiovascular Medicine, Department of Medicine, University of Missouri School of Medicine, One Hospital Drive, Columbia, MO 65212, USA
| | - Hong Hao
- Center for Precision Medicine and Division of Cardiovascular Medicine, Department of Medicine, University of Missouri School of Medicine, One Hospital Drive, Columbia, MO 65212, USA
| | - Michael A Hill
- Dalton Cardiovascular Research Center, University of Missouri, 134 Research Park Drive, Columbia, MO 65211, USA
| | - Canxia Xu
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha 410013, China
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78
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Li J, Pan X, Ren Z, Li B, Liu H, Wu C, Dong X, de Vos P, Pan LL, Sun J. Protein arginine methyltransferase 2 (PRMT2) promotes dextran sulfate sodium-induced colitis by inhibiting the SOCS3 promoter via histone H3R8 asymmetric dimethylation. Br J Pharmacol 2021; 179:141-158. [PMID: 34599829 DOI: 10.1111/bph.15695] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 07/12/2021] [Accepted: 07/16/2021] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND AND PURPOSE There is emerging evidence for a critical role for epigenetic modifiers in the development of inflammatory bowel disease (IBD). Protein arginine methyltransferase 2 (PRMT2) is responsible for the methylation of arginine residues on histones and targets transcription factors involved in many cellular processes, including gene transcription, mRNA splicing, cell proliferation, and cell differentiation. In this study, the role and underlying mechanisms of PRMT2 in colitis were studied. EXPERIMENTAL APPROACH A mouse dextran sulfate sodium (DSS)-induced experimental colitis model was used to study PRMT2 in colitis. Lentivirus-induced PRMT2 silencing or overexpression in vivo was applied to address the role of PRMT2 in colitis. Detailed western blot and expression analysis were done to understand epigenetic changes induced by PRMT2 in colitis. KEY RESULTS PRMT2 is highly expressed in inflammatory bowel disease patients, in inflamed murine colon and in TNF-α stimulated murine gut epithelial cells. PRMT2 overexpression aggravates, while knockdown alleviates DSS-induced colitis, suggesting that PRMT2 is a pivotal mediator of colitis in mice. Mechanistically, PRMT2 mediates colitis by increasing repressive histone mark H3R8 asymmetric methylation (H3R8me2a) at the promoter region of the suppressor of cytokine signalling 3 promoter (SOCS3). Resultant inhibition of SOCS3 expression and inhibition of SOCS3-mediated degradation of TNF receptor associated factor 5 (TRAF5) via ubiquitination led to elevated TRAF5 expression and TRAF5-mediated downstream NF-κB/MAPK activation. CONCLUSION AND IMPLICATIONS Our study demonstrates that PRMT2 acts as a transcriptional co-activator for proinflammatory genes during colitis. Hence, targeting PRMT2 may provide a novel therapeutic approach for colitis.
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Affiliation(s)
- Jiahong Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Xiaohua Pan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Zhengnan Ren
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Binbin Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - He Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Chengfei Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Xiaoliang Dong
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Paul de Vos
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Li-Long Pan
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Jia Sun
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
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79
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Chen XQ, Tu L, Zou JS, Zhu SQ, Zhao YJ, Qin YH. The Involvement of Neutrophil Extracellular Traps in Disease Activity Associated With IgA Vasculitis. Front Immunol 2021; 12:668974. [PMID: 34539623 PMCID: PMC8446352 DOI: 10.3389/fimmu.2021.668974] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 08/16/2021] [Indexed: 11/13/2022] Open
Abstract
Objectives This aim of this study was to determine whether neutrophil extracellular traps (NETs) are involved in the pathogenesis of IgA vasculitis (IgAV) and investigate whether the circulating NETs levels are associated with disease activity in children. Methods We performed a case-control study and collected blood samples from 193 children with different stages of IgAV (61 were at the onset stage, 64 at the remission stage, 43 at the active stage, and 25 were undergoing drug withdrawal). A total of 192 healthy children were recruited as controls. Circulating cell free DNA (cf-DNA) was obtained from the plasma and quantified by using the Quant-iT PicoGreen DNA quantification kit. NETs-associated myeloperoxidase-DNA (MPO-DNA), citrullinated-histone H3 (cit-H3), neutrophil elastase (NE), and the deoxyribonuclease I (DNase I) concentrations were measured using enzyme-linked immunosorbent assays. The presence of NETs in the kidney and gastrointestinal tissues of onset and active IgAV patients was determined by multiple immunofluorescence staining in 15 IgAV nephritis patients and 9 IgAV patients without IgAV nephritis, respectively. NETs degradation potency of collected sera samples from IgAV patients were checked in vitro. Relationships between circulating levels of cf-DNA with MPO-DNA, NE, and DNase I and the patients were analyzed. Results Circulating levels of cf-DNA in onset and active IgAV patients were significantly higher than those in remission and drug withdrawal patients as well as healthy controls. The results were similar for MPO-DNA and NE. The levels of circulating cf-DNA correlated significantly with MPO-DNA, NE and DNase I. A significantly decreased degradation of NETs from the onset and active IgAV patients was observed, but was normal in healthy controls. Furthermore, presence of NETs was also confirmed in all renal and gastrointestinal tissues obtained from the onset and active IgAV patients but not control samples. Conclusions Our data showed that NETs were released into the circulation of IgAV patients and are involved in the disease activity. The circulating levels of NETs maybe used to assess disease severity in children with IgAV.
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Affiliation(s)
- Xiu-Qi Chen
- Department of Pediatrics, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Li Tu
- Department of Pediatrics, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Jia-Sen Zou
- Department of Pediatrics, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Shi-Qun Zhu
- Department of Pediatrics, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Yan-Jun Zhao
- Department of Pediatrics, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Yuan-Han Qin
- Department of Pediatrics, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
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80
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Zhang S, Cao Y, Du J, Liu H, Chen X, Li M, Xiang M, Wang C, Wu X, Liu L, Wang C, Wu Y, Li Z, Fang S, Shi J, Wang L. Neutrophil extracellular traps contribute to tissue plasminogen activator resistance in acute ischemic stroke. FASEB J 2021; 35:e21835. [PMID: 34449927 DOI: 10.1096/fj.202100471rr] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 01/08/2023]
Abstract
Circulating neutrophil extracellular traps (NETs) resistant to t-PA have not been studied completely although NETs in thrombi may contribute to tissue plasminogen activator (t-PA) resistance. This research intended to elucidate whether circulating NETs are associated with t-PA resistance and the underlying mechanism. The levels of NETs were detected in the circulating neutrophils, ischemic brain tissue of acute ischemic stroke (AIS) patients, and transient middle cerebral artery occlusion (tMCAO) models. NET formation in blood, thrombi, and ischemic brain tissue of mice were analyzed by immunofluorescence. Exposed phosphatidylserine (PS) was assessed using flow cytometry and confocal microscopy. Procoagulant activity (PCA) was evaluated using fibrin formation assays, thrombin, and purified coagulation complex. The plasma levels of NETs in AIS patients were significantly higher than those in healthy individuals. After thrombolysis, a significant increase was noted in NET markers in no-improvement patients, while the changes in improvement patients were not significant. Importantly, NETs were decorated with von Willebrand factor (vWF) and plasminogen activator inhibitor-1 (PAI-1) in the blood and thrombi, which could reverse the fibrinolytic effects. In addition, NETs activated platelets (PLTs) and endothelial cells (ECs), stimulating a procoagulant phenotype and facilitating vWF and PAI-1 release. DNase I, activated protein C (APC), and sivelestat markedly inhibited these effects. Furthermore, targeting NETs protected mice from tMCAO-induced cerebral ischemia, possibly by regulating vWF and PAI-1. In summary, NETs may contribute to t-PA resistance in AIS through activation of PLTs and ECs. Strategies against NETs may present a promising therapeutic approach to improve the thrombolysis efficiency of t-PA in AIS patients.
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Affiliation(s)
- Shuoqi Zhang
- Department of Neurology, The Second Affiliated Hospital, Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Ministry of Education, Harbin, China
| | - Yuze Cao
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Jingwen Du
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Huan Liu
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Xiaojing Chen
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Mengdi Li
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Mengqi Xiang
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Chengyue Wang
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Xiaoming Wu
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Langjiao Liu
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Chunli Wang
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Yinsong Wu
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Zhuxin Li
- Department of Acupuncture and Moxibustion, College of Acupuncture and Moxibustion, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Shaohong Fang
- The Key Laboratory of Myocardial Ischemia, Ministry of Education, Harbin, China
| | - Jialan Shi
- Department of Hematology, The First Affiliated Hospital, Harbin Medical University, Harbin, China.,Department of Medicine, Brigham and Women's Hospital, VA Boston Healthcare System, Harvard Medical School, Boston, MA, USA
| | - Lihua Wang
- Department of Neurology, The Second Affiliated Hospital, Harbin Medical University, Harbin, China
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81
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Shao BZ, Yao Y, Li JP, Chai NL, Linghu EQ. The Role of Neutrophil Extracellular Traps in Cancer. Front Oncol 2021; 11:714357. [PMID: 34476216 PMCID: PMC8406742 DOI: 10.3389/fonc.2021.714357] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 07/22/2021] [Indexed: 12/14/2022] Open
Abstract
Neutrophils are vital components of innate and adaptive immunity. It is widely acknowledged that in various pathological conditions, neutrophils are activated and release condensed DNA strands, triggering the formation of neutrophil extracellular traps (NETs). NETs have been shown to be effective in fighting against microbial infections and modulating the pathogenesis and progression of diseases, including malignant tumors. This review describes the current knowledge on the biological characteristics of NETs. Additionally, the mechanisms of NETs in cancer are discussed, including the involvement of signaling pathways and the crosstalk between other cancer-related mechanisms, including inflammasomes and autophagy. Finally, based on previous and current studies, the roles of NET formation and the potential therapeutic targets and strategies related to NETs in several well-studied types of cancers, including breast, lung, colorectal, pancreatic, blood, neurological, and cutaneous cancers, are separately reviewed and discussed.
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Affiliation(s)
| | | | | | - Ning-Li Chai
- Department of Gastroenterology, General Hospital of the Chinese People’s Liberation Army, Beijing, China
| | - En-Qiang Linghu
- Department of Gastroenterology, General Hospital of the Chinese People’s Liberation Army, Beijing, China
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82
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Dos Santos Ramos A, Viana GCS, de Macedo Brigido M, Almeida JF. Neutrophil extracellular traps in inflammatory bowel diseases: Implications in pathogenesis and therapeutic targets. Pharmacol Res 2021; 171:105779. [PMID: 34298111 DOI: 10.1016/j.phrs.2021.105779] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 07/04/2021] [Accepted: 07/19/2021] [Indexed: 02/07/2023]
Abstract
Crohn's disease (CD) and ulcerative colitis (UC) are the two main forms of inflammatory bowel disease (IBD). Among the various immune cells involved in IBD, neutrophils are the first to infiltrate and appear to contribute to the impairment of the epithelial barrier, destruction of tissues by oxidative and proteolytic damage, as well as to the perpetuation of inflammation by the release of cytokines and chemokines associated with pro-inflammatory effects. In addition to basic effector mechanisms, such as phagocytosis and chemotaxis, neutrophils can also form extracellular traps (NETs), which is made up of a mesh-like structure - which contains its chromatin (DNA + histones) together with granules and enzymes, such as myeloperoxidase (MPO) and neutrophilic elastase (NE) - and that acts as a trap that can result in the death of extracellular pathogens and/or can promote tissue damage. Recent evidence indicates that NETs also play an important and significant role in the pathogenesis of IBD. Previous studies have reported increased levels of NETs in tissue and serum samples from patients with IBD, as well as in experimental colitis. In this review, we discuss current knowledge about the formation of NETs and their role in the pathophysiology of IBD, pointing out potential mechanisms by which NETs promote tissue damage, as well as their involvement in complications associated with IBD. In addition, we propose potential targets for therapy to regulate the production of NETs, making it possible to expand the current spectrum of therapies for IBD.
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Affiliation(s)
- Anderson Dos Santos Ramos
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.
| | | | | | - Juliana Franco Almeida
- Department of Cellular Biology, University of Brasilia, Brasilia, Brazil; Department of Cellular and Molecular Biology, Federal University of Paraíba, Paraíba, Brazil.
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83
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The Host Cellular Immune Response to Infection by Campylobacter Spp. and Its Role in Disease. Infect Immun 2021; 89:e0011621. [PMID: 34031129 DOI: 10.1128/iai.00116-21] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Campylobacter spp. are the leading cause of bacterium-derived gastroenteritis worldwide, impacting 96 million individuals annually. Unlike other bacterial pathogens of the gastrointestinal tract, Campylobacter spp. lack many of the classical virulence factors that are often associated with the ability to induce disease in humans, including an array of canonical secretion systems and toxins. Consequently, the clinical manifestations of human campylobacteriosis and its resulting gastrointestinal pathology are believed to be primarily due to the host immune response toward the bacterium. Further, while gastrointestinal infection is usually self-limiting, numerous postinfectious disorders can occur, including the development of Guillain-Barré syndrome, reactive arthritis, and irritable bowel syndrome. Because gastrointestinal disease likely results from the host immune response, the development of these postinfectious disorders may be due to dysregulation or misdirection of the same inflammatory response. As a result, it is becoming increasingly important to the Campylobacter field, and human health, that the cellular immune responses toward Campylobacter be better understood, including which immunological events are critical to the development of disease and the postinfectious disorders mentioned above. In this review, we collectively cover the cellular immune responses across susceptible hosts to Campylobacter jejuni infection, along with the tissue pathology and postinfectious disorders which may develop.
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84
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Khan U, Chowdhury S, Billah MM, Islam KMD, Thorlacius H, Rahman M. Neutrophil Extracellular Traps in Colorectal Cancer Progression and Metastasis. Int J Mol Sci 2021; 22:ijms22147260. [PMID: 34298878 PMCID: PMC8307027 DOI: 10.3390/ijms22147260] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 06/30/2021] [Accepted: 07/02/2021] [Indexed: 12/24/2022] Open
Abstract
Neutrophils form sticky web-like structures known as neutrophil extracellular traps (NETs) as part of innate immune response. NETs are decondensed extracellular chromatin filaments comprising nuclear and cytoplasmic proteins. NETs have been implicated in many gastrointestinal diseases including colorectal cancer (CRC). However, the regulatory mechanisms of NET formation and potential pharmacological inhibitors in the context of CRC have not been thoroughly discussed. In this review, we intend to highlight roles of NETs in CRC progression and metastasis as well as the potential of targeting NETs during colon cancer therapy.
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Affiliation(s)
- Umama Khan
- Biotechnology and Genetic Engineering Discipline, Khulna University, Khulna 9208, Bangladesh; (U.K.); (M.M.B.); (K.M.D.I.)
| | - Sabrina Chowdhury
- Biochemistry and Biotechnology, North South University, Dhaka 1229, Bangladesh;
| | - Md Morsaline Billah
- Biotechnology and Genetic Engineering Discipline, Khulna University, Khulna 9208, Bangladesh; (U.K.); (M.M.B.); (K.M.D.I.)
| | - Kazi Mohammed Didarul Islam
- Biotechnology and Genetic Engineering Discipline, Khulna University, Khulna 9208, Bangladesh; (U.K.); (M.M.B.); (K.M.D.I.)
| | - Henrik Thorlacius
- Department of Clinical Sciences, Malmö, Section for Surgery, Lund University, 214 28 Malmö, Sweden;
| | - Milladur Rahman
- Department of Clinical Sciences, Malmö, Section for Surgery, Lund University, 214 28 Malmö, Sweden;
- Correspondence:
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85
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To Trap a Pathogen: Neutrophil Extracellular Traps and Their Role in Mucosal Epithelial and Skin Diseases. Cells 2021; 10:cells10061469. [PMID: 34208037 PMCID: PMC8230648 DOI: 10.3390/cells10061469] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/28/2021] [Accepted: 06/03/2021] [Indexed: 12/18/2022] Open
Abstract
Neutrophils are the most abundant circulating innate immune cells and comprise the first immune defense line, as they are the most rapidly recruited cells at sites of infection or inflammation. Their main microbicidal mechanisms are degranulation, phagocytosis, cytokine secretion and the formation of extracellular traps. Neutrophil extracellular traps (NETs) are a microbicidal mechanism that involves neutrophil death. Since their discovery, in vitro and in vivo neutrophils have been challenged with a range of stimuli capable of inducing or inhibiting NET formation, with the objective to understand its function and regulation in health and disease. These networks composed of DNA and granular components are capable of immobilizing and killing pathogens. They comprise enzymes such as myeloperoxidase, elastase, cathepsin G, acid hydrolases and cationic peptides, all with antimicrobial and antifungal activity. Therefore, the excessive formation of NETs can also lead to tissue damage and promote local and systemic inflammation. Based on this concept, in this review, we focus on the role of NETs in different infectious and inflammatory diseases of the mucosal epithelia and skin.
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86
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Sun S, Duan Z, Wang X, Chu C, Yang C, Chen F, Wang D, Wang C, Li Q, Ding W. Neutrophil extracellular traps impair intestinal barrier functions in sepsis by regulating TLR9-mediated endoplasmic reticulum stress pathway. Cell Death Dis 2021; 12:606. [PMID: 34117211 PMCID: PMC8195983 DOI: 10.1038/s41419-021-03896-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 02/06/2023]
Abstract
Increased neutrophil extracellular traps (NETs) formation has been found to be associated with intestinal inflammation, and it has been reported that NETs may drive the progression of gut dysregulation in sepsis. However, the biological function and regulation of NETs in sepsis-induced intestinal barrier dysfunction are not yet fully understood. First, we found that both circulating biomarkers of NETs and local NETs infiltration in the intestine were significantly increased and had positive correlations with markers of enterocyte injury in abdominal sepsis patients. Moreover, the levels of local citrullinated histone 3 (Cit H3) expression were associated with the levels of BIP expression. To further confirm the role of NETs in sepsis-induced intestinal injury, we compared peptidylarginine deiminase 4 (PAD4)-deficient mice and wild-type (WT) mice in a lethal septic shock model. In WT mice, the Cit H3-DNA complex was markedly increased, and elevated intestinal inflammation and endoplasmic reticulum (ER) stress activation were also found. Furthermore, PAD4 deficiency alleviated intestinal barrier disruption and decreased ER stress activation. Notably, NETs treatment induced intestinal epithelial monolayer barrier disruption and ER stress activation in a dose-dependent manner in vitro, and ER stress inhibition markedly attenuated intestinal apoptosis and tight junction injury. Finally, TLR9 antagonist administration significantly abrogated NETs-induced intestinal epithelial cell death through ER stress inhibition. Our results indicated that NETs could contribute to sepsis-induced intestinal barrier dysfunction by promoting inflammation and apoptosis. Suppression of the TLR9–ER stress signaling pathway can ameliorate NETs-induced intestinal epithelial cell death.
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Affiliation(s)
- Shilong Sun
- Division of Trauma and Surgical Intensive Care Unit, Research Institute of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, P. R. China.,Key Laboratory of Intestinal Injury, Research Institute of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, P. R. China
| | - Zehua Duan
- Division of Trauma and Surgical Intensive Care Unit, Research Institute of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, P. R. China
| | - Xinyu Wang
- Division of Trauma and Surgical Intensive Care Unit, Research Institute of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, P. R. China
| | - Chengnan Chu
- Division of Trauma and Surgical Intensive Care Unit, Research Institute of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, P. R. China
| | - Chao Yang
- Division of Trauma and Surgical Intensive Care Unit, Research Institute of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, P. R. China
| | - Fang Chen
- Division of Trauma and Surgical Intensive Care Unit, Research Institute of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, P. R. China.,School of Medicine, Southeast University, Nanjing, 210009, P. R. China
| | - Daojuan Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, 210093, Jiangsu, P. R. China
| | - Chenyang Wang
- Key Laboratory of Intestinal Injury, Research Institute of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, P. R. China
| | - Qiurong Li
- Key Laboratory of Intestinal Injury, Research Institute of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, P. R. China.
| | - Weiwei Ding
- Division of Trauma and Surgical Intensive Care Unit, Research Institute of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, P. R. China. .,The First School of Clinical Medicine, Southern Medical University, Nanjing, 210002, Jiangsu, P. R. China.
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87
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Dong W, Liu D, Zhang T, You Q, Huang F, Wu J. Oral delivery of staphylococcal nuclease ameliorates DSS induced ulcerative colitis in mice via degrading intestinal neutrophil extracellular traps. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 215:112161. [PMID: 33812202 DOI: 10.1016/j.ecoenv.2021.112161] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 03/12/2021] [Accepted: 03/14/2021] [Indexed: 06/12/2023]
Abstract
Recent studies have revealed that neutrophil extracellular traps (NETs) may contribute directly to the initiation of ulcerative colitis (UC), a typical inflammatory bowel disease (IBD) characterized by mucosal damage. Staphylococcal nuclease (SNase), a nonspecific phosphodiesterase, has a strong ability to degrade DNA. Here we investigate whether intestinal NET degradation with an oral preparation of SNase can ameliorate dextran sulfate sodium (DSS)-induced UC in mice. SNase encapsulated with calcium alginate (ALG-SNase) was formulated using crosslinking technology with sodium alginate and calcium chloride. ALG-SNase were orally administered to DSS-induced UC mice, and their therapeutic efficacy was evaluated. The expression of inflammatory cytokines and biomarkers of NETs was also assessed, as well as the intestinal permeability in mice. The results showed that ALG-SNase nanoparticles were successfully prepared and delivered to the colon of UC mice. In addition, oral administration of ALG-SNase nanoparticles decreased NET levels in the colon and effectively alleviated the clinical colitis index and tissue inflammation in UC mice. Moreover, the SNase nanoparticles reduced intestinal permeability and regulated the expression of proinflammatory cytokines. Furthermore, the markers of NETs were strongly correlated with the expression levels of tight junction proteins in colon tissue. In conclusion, our data showed that oral administration of ALG-SNase can effectively ameliorate colitis in UC mice via NET degradation and suggested SNase as a candidate therapy for the treatment of UC.
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Affiliation(s)
- Wanfa Dong
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Dan Liu
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Tingting Zhang
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Qi You
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Fengjie Huang
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Jie Wu
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China.
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88
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Hanhai Z, Bin Q, Shengjun Z, Jingbo L, Yinghan G, Lingxin C, Shenglong C, Hang Z, Huaijun C, Jianfeng Z, Yucong P, Xiongjie F, Xiaobo Y, Xiaoxiao T, Jianru L, Chi G, Feng Y, Gao C. Neutrophil extracellular traps, released from neutrophil, promote microglia inflammation and contribute to poor outcome in subarachnoid hemorrhage. Aging (Albany NY) 2021; 13:13108-13123. [PMID: 33971624 PMCID: PMC8148446 DOI: 10.18632/aging.202993] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/05/2021] [Indexed: 02/07/2023]
Abstract
Evidence indicates that neutrophil has promoted inflammation in several central nervous system diseases. However, whether the peripheral blood levels of neutrophils are associated with the functional outcome after subarachnoid hemorrhage and its potential mechanism remain unclear. In this study, we showed that neutrophil levels in peripheral blood were higher in patients with subarachnoid hemorrhage (P < 0.001) than in healthy subjects. Neutrophil levels were positively associated with Hunt and Hess grade (P < 0.001) and modified Rankin Scale scores at 3 months after SAH (P = 0.008). In terms of the mechanism, neutrophil extracellular traps markedly increased the proinflammatory subtype transition of microglia. After treatment with DNAse I, the proinflammatory subtype transition of microglia involving CD16 positive and IL-1β positive microglia was limited (P < 0.05). This mechanism was also verified in vitro. These results indicate that the existence of neutrophil extracellular traps, released from neutrophils after subarachnoid hemorrhage, can shift microglia toward a more proinflammatory phenotype and contribute to neuroinflammation and poor outcome in subarachnoid hemorrhage.
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Affiliation(s)
- Zeng Hanhai
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qin Bin
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhou Shengjun
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Department of Neurological Surgery, Ningbo First Hospital, Ningbo, China
| | - Li Jingbo
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Neurosurgerical Intensive Care Unit, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Guo Yinghan
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Cai Lingxin
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Cao Shenglong
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhou Hang
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chen Huaijun
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhuang Jianfeng
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Peng Yucong
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Fu Xiongjie
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yu Xiaobo
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Tan Xiaoxiao
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Li Jianru
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Gu Chi
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yan Feng
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chen Gao
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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89
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Bruggeman Y, Sodré FMC, Buitinga M, Mathieu C, Overbergh L, Kracht MJL. Targeting citrullination in autoimmunity: insights learned from preclinical mouse models. Expert Opin Ther Targets 2021; 25:269-281. [PMID: 33896351 DOI: 10.1080/14728222.2021.1918104] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Aberrant citrullination and excessive peptidylarginine deiminase (PAD) activity are detected in numerous challenging autoimmune diseases such as rheumatoid arthritis, inflammatory bowel diseases, systemic lupus erythematosus, multiple sclerosis, and type 1 diabetes. Because excessive PAD activity is a common denominator in these diseases, PADs are interesting potential therapeutic targets for future therapies. AREAS COVERED This review summarizes the advances made in the design of PAD inhibitors, their utilization and therapeutic potential in preclinical mouse models of autoimmunity. Relevant literature encompasses studies from 1994 to 2021 that are available on PubMed.gov. EXPERT OPINION Pan-PAD inhibition is a promising therapeutic strategy for autoimmune diseases. Drugs achieving pan-PAD inhibition were capable of ameliorating, reversing, and preventing clinical symptoms in preclinical mouse models. However, the implications for PADs in key biological processes potentially present a high risk for clinical complications and could hamper the translation of PAD inhibitors to the clinic. We envisage that PAD isozyme-specific inhibitors will improve the understanding the role of PAD isozymes in disease pathology, reduce the risk of side-effects and enhance prospects for future clinical translation.
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Affiliation(s)
- Ylke Bruggeman
- Department of Chronic Diseases and Metabolism, Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Fernanda M C Sodré
- Department of Chronic Diseases and Metabolism, Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Mijke Buitinga
- Department of Chronic Diseases and Metabolism, Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium.,Department of Nutrition and Movement Sciences, Maastricht University, Maastricht, The Netherlands.,Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Chantal Mathieu
- Department of Chronic Diseases and Metabolism, Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Lut Overbergh
- Department of Chronic Diseases and Metabolism, Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Maria J L Kracht
- Department of Chronic Diseases and Metabolism, Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
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90
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Cross-Talk among Polymorphonuclear Neutrophils, Immune, and Non-Immune Cells via Released Cytokines, Granule Proteins, Microvesicles, and Neutrophil Extracellular Trap Formation: A Novel Concept of Biology and Pathobiology for Neutrophils. Int J Mol Sci 2021; 22:ijms22063119. [PMID: 33803773 PMCID: PMC8003289 DOI: 10.3390/ijms22063119] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/13/2021] [Accepted: 03/16/2021] [Indexed: 12/14/2022] Open
Abstract
Polymorphonuclear neutrophils (PMNs) are traditionally regarded as professional phagocytic and acute inflammatory cells that engulf the microbial pathogens. However, accumulating data have suggested that PMNs are multi-potential cells exhibiting many important biological functions in addition to phagocytosis. These newly found novel activities of PMN include production of different kinds of cytokines/chemokines/growth factors, release of neutrophil extracellular traps (NET)/ectosomes/exosomes and trogocytosis (membrane exchange) with neighboring cells for modulating innate, and adaptive immune responses. Besides, PMNs exhibit potential heterogeneity and plasticity in involving antibody-dependent cellular cytotoxicity (ADCC), cancer immunity, autoimmunity, inflammatory rheumatic diseases, and cardiovascular diseases. Interestingly, PMNs may also play a role in ameliorating inflammatory reaction and wound healing by a subset of PMN myeloid-derived suppressor cells (PMN-MDSC). Furthermore, PMNs can interact with other non-immune cells including platelets, epithelial and endothelial cells to link hemostasis, mucosal inflammation, and atherogenesis. The release of low-density granulocytes (LDG) from bone marrow initiates systemic autoimmune reaction in systemic lupus erythematosus (SLE). In clinical application, identification of certain PMN phenotypes may become prognostic factors for severe traumatic patients. In the present review, we will discuss these newly discovered biological and pathobiological functions of the PMNs.
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91
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Drury B, Hardisty G, Gray RD, Ho GT. Neutrophil Extracellular Traps in Inflammatory Bowel Disease: Pathogenic Mechanisms and Clinical Translation. Cell Mol Gastroenterol Hepatol 2021; 12:321-333. [PMID: 33689803 PMCID: PMC8166923 DOI: 10.1016/j.jcmgh.2021.03.002] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 03/01/2021] [Accepted: 03/02/2021] [Indexed: 02/07/2023]
Abstract
The Inflammatory Bowel Diseases (IBD), Ulcerative Colitis (UC) and Crohn's Disease (CD) are characterised by chronic non-resolving gut mucosal inflammation involving innate and adaptive immune responses. Neutrophils, usually regarded as first responders in inflammation, are a key presence in the gut mucosal inflammatory milieu in IBD. Here, we review the role of neutrophil extracellular trap (NET) formation as a potential effector disease mechanism. NETs are extracellular webs of chromatin, microbicidal proteins and oxidative enzymes that are released by neutrophils to contain pathogens. NETs contribute to the pathogenesis of several immune-mediated diseases such as systemic lupus erythematosus and rheumatoid arthritis; and recently, as a major tissue damaging process involved in the host response to severe acute respiratory syndrome coronavirus 2 infection. NETs are pertinent as a defence mechanism at the gut mucosal interphase exposed to high levels of bacteria, viruses and fungi. On the other hand, NETs can also potentiate and perpetuate gut inflammation. In this review, we discuss the broad protective vs. pathogenic roles of NETs, explanatory factors that could lead to an increase in NET formation in IBD and how NETs may contribute to gut inflammation and IBD-related complications. Finally, we summarise therapeutic opportunities to target NETs in IBD.
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Affiliation(s)
- Broc Drury
- Centre for Inflammation Research, University of Edinburgh, Scotland, United Kingdom
| | - Gareth Hardisty
- Centre for Inflammation Research, University of Edinburgh, Scotland, United Kingdom
| | - Robert D Gray
- Centre for Inflammation Research, University of Edinburgh, Scotland, United Kingdom
| | - Gwo-Tzer Ho
- Centre for Inflammation Research, University of Edinburgh, Scotland, United Kingdom.
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92
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Zhang S, Zhang J, Wang C, Chen X, Zhao X, Jing H, Liu H, Li Z, Wang L, Shi J. COVID‑19 and ischemic stroke: Mechanisms of hypercoagulability (Review). Int J Mol Med 2021; 47:21. [PMID: 33448315 PMCID: PMC7849983 DOI: 10.3892/ijmm.2021.4854] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 12/15/2020] [Indexed: 12/20/2022] Open
Abstract
During the coronavirus disease 2019 (COVID-19) pandemic, some patients with severe COVID-19 exhibited complications such as acute ischemic stroke (AIS), which was closely associated with a poor prognosis. These patients often had an abnormal coagulation, namely, elevated levels of D-dimer and fibrinogen, and a low platelet count. Certain studies have suggested that COVID-19 induces AIS by promoting hypercoagulability. Nevertheless, the exact mechanisms through which COVID-19 leads to a hypercoagulable state in infected patients remain unclear. Understanding the underlying mechanisms of hypercoagulability is of utmost importance for the effective treatment of these patients. The present review aims to summarize the current status of research on COVID-19, hypercoagulability and ischemic stroke. The present review also aimed to shed light into the underlying mechanisms through which COVID-19 induces hypercoagulability, and to provide therapies for different mechanisms for the more effective treatment of patients with COVID-19 with ischemic stroke and prevent AIS during the COVID-19 pandemic.
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Affiliation(s)
- Shuoqi Zhang
- Department of Neurology, The Second Hospital, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Jinming Zhang
- Department of Hematology, The First Hospital, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Chunxu Wang
- Department of Hematology, The First Hospital, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Xiaojing Chen
- Department of Hematology, The First Hospital, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Xinyi Zhao
- Department of Cardiology, The Second Hospital, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Haijiao Jing
- Department of Hematology, The First Hospital, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Huan Liu
- Department of Hematology, The First Hospital, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Zhuxin Li
- Department of Acupuncture and Moxibustion, College of Acupuncture and Moxibustion, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang 150040, P.R. China
| | - Lihua Wang
- Department of Neurology, The Second Hospital, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Jialan Shi
- Department of Hematology, The First Hospital, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
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93
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Klopf J, Brostjan C, Eilenberg W, Neumayer C. Neutrophil Extracellular Traps and Their Implications in Cardiovascular and Inflammatory Disease. Int J Mol Sci 2021; 22:ijms22020559. [PMID: 33429925 PMCID: PMC7828090 DOI: 10.3390/ijms22020559] [Citation(s) in RCA: 114] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/04/2021] [Accepted: 01/07/2021] [Indexed: 02/07/2023] Open
Abstract
Neutrophils are primary effector cells of innate immunity and fight infection by phagocytosis and degranulation. Activated neutrophils also release neutrophil extracellular traps (NETs) in response to a variety of stimuli. These NETs are net-like complexes composed of cell-free DNA, histones and neutrophil granule proteins. Besides the evolutionarily conserved mechanism to capture and eliminate pathogens, NETs are also associated with pathophysiological processes of various diseases. Here, we elucidate the mechanisms of NET formation and their different implications in disease. We focused on autoinflammatory and cardiovascular disorders as the leading cause of death. Neutrophil extracellular traps are not only present in various cardiovascular diseases but play an essential role in atherosclerotic plaque formation, arterial and venous thrombosis, as well as in the development and progression of abdominal aortic aneurysms. Furthermore, NETosis can be considered as a source of autoantigens and maintains an inflammatory milieu promoting autoimmune diseases. Indeed, there is further need for research into the balance between NET induction, inhibition, and degradation in order to pharmacologically target NETs and their compounds without impairing the patient’s immune defense. This review may be of interest to both basic scientists and clinicians to stimulate translational research and innovative clinical approaches.
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94
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Lin H, Bai Z, Meng F, Wu Y, Luo L, Shukla A, Yoshida EM, Guo X, Qi X. Epidemiology and Risk Factors of Portal Venous System Thrombosis in Patients With Inflammatory Bowel Disease: A Systematic Review and Meta-Analysis. Front Med (Lausanne) 2021; 8:744505. [PMID: 35111772 PMCID: PMC8801813 DOI: 10.3389/fmed.2021.744505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 12/09/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Patients with inflammatory bowel disease (IBD) may be at risk of developing portal venous system thrombosis (PVST) with worse outcomes. This study aims to explore the prevalence, incidence, and risk factors of PVST among patients with IBD. METHODS PubMed, Embase, and Cochrane Library databases were searched. All the eligible studies were divided according to the history of colorectal surgery. Only the prevalence of PVST in patients with IBD was pooled if the history of colorectal surgery was unclear. The incidence of PVST in patients with IBD after colorectal surgery was pooled if the history of colorectal surgery was clear. Prevalence, incidence, and risk factors of PVST were pooled by only a random-effects model. Subgroup analyses were performed in patients undergoing imaging examinations. Odds ratios (ORs) with 95% CIs were calculated. RESULTS A total of 36 studies with 143,659 patients with IBD were included. Among the studies where the history of colorectal surgery was unclear, the prevalence of PVST was 0.99, 1.45, and 0.40% in ulcerative colitis (UC), Crohn's disease (CD), and unclassified IBD, respectively. Among the studies where all the patients underwent colorectal surgery, the incidence of PVST was 6.95, 2.55, and 3.95% in UC, CD, and unclassified IBD after colorectal surgery, respectively. Both the prevalence and incidence of PVST became higher in patients with IBD undergoing imaging examinations. Preoperative corticosteroids therapy (OR = 3.112, 95% CI: 1.017-9.525; p = 0.047) and urgent surgery (OR = 1.799, 95% CI: 1.079-2.998; p = 0.024) are significant risk factors of PVST in patients with IBD after colorectal surgery. The mortality of patients with IBD with PVST after colorectal surgery was 4.31% (34/789). CONCLUSION PVST is not rare, but potentially lethal in patients with IBD after colorectal surgery. More severe IBD, indicated by preoperative corticosteroids and urgent surgery, is associated with a higher risk of PVST after colorectal surgery. Therefore, screening for PVST by imaging examinations and antithrombotic prophylaxis in high-risk patients should be actively considered. SYSTEMATIC REVIEW REGISTRATION Registered on PROSPERO, Identifier: CRD42020159579.
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Affiliation(s)
- Hanyang Lin
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
- China Medical University, Shenyang, China
| | - Zhaohui Bai
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
- Shenyang Pharmaceutical University, Shenyang, China
| | - Fanjun Meng
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
| | - Yanyan Wu
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
- Jinzhou Medical University, Jinzhou, China
| | - Li Luo
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
- Jinzhou Medical University, Jinzhou, China
| | - Akash Shukla
- Department of Gastroenterology, King Edward Memorial Hospital and Seth Gordhandas Sunderdas Medical College, Mumbai, India
| | - Eric M. Yoshida
- Division of Gastroenterology, Vancouver General Hospital, Vancouver, BC, Canada
| | - Xiaozhong Guo
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
- Xiaozhong Guo
| | - Xingshun Qi
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
- *Correspondence: Xingshun Qi
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95
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Dragoni G, De Hertogh G, Vermeire S. The Role of Citrullination in Inflammatory Bowel Disease: A Neglected Player in Triggering Inflammation and Fibrosis? Inflamm Bowel Dis 2021; 27:134-144. [PMID: 32426830 DOI: 10.1093/ibd/izaa095] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Indexed: 02/07/2023]
Abstract
Citrullination is a posttranslational modification of proteins mediated by a specific family of enzymes called peptidylarginine deiminases (PAD). Dysregulation of these enzymes is involved in the etiology of various diseases, from cancer to autoimmune disorders. In inflammatory bowel disease (IBD), data for a role of citrullination in the disease process are starting to accumulate at different experimental levels including gene expression analyses, RNA, and protein quantifications. Most data have been generated in ulcerative colitis, but data in Crohn disease are lacking so far. In addition, the citrullination of histones is the fundamental process promoting inflammation through the formation of neutrophil extracellular traps (NETs). Interestingly, NETs have also been shown to activate fibroblasts into myofibroblasts in fibrotic interstitial lung disease. Therefore, citrullination merits more thorough study in the bowel to determine its role in driving disease complications such as fibrosis. In this review we describe the process of citrullination and the different players in this pathway, the role of citrullination in autoimmunity with a special focus on IBD, the emerging role for citrullination and NETs in triggering fibrosis, and, finally, how this process could be therapeutically targeted.
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Affiliation(s)
- Gabriele Dragoni
- KU Leuven Department of Chronic Diseases, Metabolism and Ageing, Translational Research Center for Gastrointestinal Disorders, Leuven, Belgium.,Gastroenterology Research Unit, Department of Experimental and Clinical Biomedical Sciences Mario Serio, University of Florence, Florence, Italy.,Department of Medical Biotechnologies, University of Siena, Italy
| | - Gert De Hertogh
- KU Leuven, Department of Imaging and Pathology, Translational Cell & Tissue Research, Leuven, Belgium
| | - Séverine Vermeire
- KU Leuven Department of Chronic Diseases, Metabolism and Ageing, Translational Research Center for Gastrointestinal Disorders, Leuven, Belgium.,Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
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96
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Hu Q, Ren H, Hong Z, Wang C, Zheng T, Ren Y, Chen K, Liu S, Wang G, Gu G, Wu X, Ren J. Early Enteral Nutrition Preserves Intestinal Barrier Function through Reducing the Formation of Neutrophil Extracellular Traps (NETs) in Critically Ill Surgical Patients. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8815655. [PMID: 33294125 PMCID: PMC7700037 DOI: 10.1155/2020/8815655] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/20/2020] [Accepted: 11/05/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND The gut was suggested as the driver of critical illness and organ injury. Recently, excessive formation of neutrophil extracellular traps (NETs) was associated with mucosal inflammation. Direct investigation of intestinal mucosa is essential to illuminate the potential mechanism of gut barrier in critically ill patients. We hypothesized that early enteral nutrition (EN) could decrease intestinal NETs and maintain the gut barrier. METHODS Intestinal biopsies were obtained using biopsy forceps from critically ill surgical patients complicated with enterocutaneous fistula. Expressions of tight junction (TJ) proteins, mucosal inflammation, and apoptosis were evaluated. Moreover, NET-associated proteins were evaluated in intestinal specimens of patients by Western blot and immunofluorescence analysis. RESULTS The intestinal barrier was significantly impaired in critically ill patients receiving early total parenteral nutrition (TPN), evidenced by intestinal villi atrophy, inflammatory infiltration, increased enterocyte apoptosis, and abnormal TJ expressions. Early EN significantly alleviated these intestinal injuries. In addition, we observed increased formation of the NET structure and elevated expressions of NET-associated proteins in intestines of critically ill surgical patients. Early EN was associated with the diminished presence of NETs and reduced expression of NET-associated proteins. Mechanically, analysis of the TLR4 pathway showed a significant increase in TLR4, NFκB, and MAPK signaling in patients receiving TPN when compared to those receiving early EN. CONCLUSION The intestinal barrier is disrupted in the human gut during critical illness. Our data suggests that an increased NET structure was showed in the gut of critically ill surgical patients, and early EN treatment was associated with the reduction of NET formation and the preservation of mucosal immunity.
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Affiliation(s)
- Qiongyuan Hu
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 210008, China
| | - Huajian Ren
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Zhiwu Hong
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Chenyang Wang
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Tao Zheng
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Yanhan Ren
- Rosalind Franklin University of Medicine and Sciences, North Chicago, IL, USA
| | - Kai Chen
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 210008, China
| | - Song Liu
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 210008, China
| | - Gefei Wang
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Guosheng Gu
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Xiuwen Wu
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Jianan Ren
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
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97
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Krogh AKH, Lyngby JG, Bjørnvad CR, Nielsen LN. Presence of nucleosomes in plasma and increased thrombin generation in dogs with acute and chronic gastroenteropathies. Res Vet Sci 2020; 135:504-510. [PMID: 33243453 DOI: 10.1016/j.rvsc.2020.11.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 11/02/2020] [Accepted: 11/02/2020] [Indexed: 02/06/2023]
Abstract
Neutrophil extracellular traps (NETs) which contain nucleosomes protect the host by eliminating extracellular pathogens. However, any inflammatory stimuli can activate NETs and eventually lead to an immune overreaction leading to autoimmune diseases and thrombosis. Acute/chronic gastroenteropathies(aGE/cGE) are prevalent in dogs, and are associated with a strong inflammatory component. The aim of this study was to investigate if dogs with aGE and cGE have increased concentrations of nucleosomes indicative of NETs formation, and whether increased concentrations of nucleosomes are associated with hypercoagulability determined by increased thrombin generation. Twenty-six dogs were enrolled. The dogs were healthy (n = 11), or presented with aGE(n = 7) or cGE(n = 8). Minimum database including CRP, APTT, PT and fibrinogen, was obtained from all dogs. Citrated plasma was batched and used for subsequent analyses. Nucleosome concentration was analysed using a Cell-Death Detection ELISA-kit and thrombin generation by a calibrated automated thrombogram assay. No statistical differences in nucleosome concentrations were present between the groups. Although a numerically increased concentration of nucleosomes where seen in dogs with aGE(median;range) (0.019 AU;0.003-0.088) and cGE(0.023 AU;0.011-0.256) compared to controls(0.007 AU;0.003-0.042). One dog with GI-lymphoma demonstrated a markedly increased concentration of nucleosomes (0.256 AU). Dogs with aGE showed increased thrombin generation by increased peak (p = 0.03) and endogenous thrombin potential (p = 0.03); and increased CRP (p = 0.001), fibrinogen (p = 0.0002) and prolonged APTT (p = 0.03) compared to controls. This proof of concept study demonstrates that dogs with aGE and cGE have presence of nucleosomes with marked increase in one dog with GI-lymphoma. Nucleosomes might be linked to haemostatic alterations in dogs with inflammatory and neoplastic diseases.
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Affiliation(s)
- A K H Krogh
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
| | - J G Lyngby
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - C R Bjørnvad
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - L N Nielsen
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
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98
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Abstract
Hypertrophic cardiomyopathy (HCM) is a common cardiac condition caused primarily by sarcomeric protein mutations with several distinct phenotypes, ranging from asymmetric septal hypertrophy, either with or without left ventricular outflow tract obstruction, to moderate left ventricular dilation with or without apical aneurysm formation and marked, end-stage dilation with refractory heart failure. Sudden cardiac death can occur at any stage. The phenotypic variability observed in HCM is the end-result of many factors, including pre-load, after-load, wall stress and myocardial ischemia stemming from microvascular dysfunction and thrombosis; however, tissue level inflammation to include leukocyte-derived extracellular traps consisting of chromatin and histones, apoptosis, proliferation of matrix proteins and impaired or dysfunctional regulatory pathways contribute as well. Our current understanding of the pathobiology, developmental stages, transition from hypertrophy to dilation and natural history of HCM with emphasis on the role of tissue-level inflammation in myocardial fibrosis and ventricular remodeling is summarized.
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99
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Khajah MA, EL-Hashim AZ, Orabi KY, Hawai S, Sary HG. Onion bulb extract can both reverse and prevent colitis in mice via inhibition of pro-inflammatory signaling molecules and neutrophil activity. PLoS One 2020; 15:e0233938. [PMID: 33095803 PMCID: PMC7584208 DOI: 10.1371/journal.pone.0233938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023] Open
Abstract
Background Onion is one of the most commonly used plants in the traditional medicine for the treatment of various diseases. We recently demonstrated the anti-inflammatory properties of onion bulb extract (OBE) in reducing colitis severity in mice when administered at the same time of colitis induction. However, whether onion can reverse established colitis or even prevent its development has not been investigated. Hypothesis To test 1. whether OBE can reduce colitis severity when given either before (preventative approach) or after (treatment approach) colitis induction and if so, 2. what are the mechanisms by which onion can achieve these effects. Methods Colitis was induced by dextran sulfate sodium (DSS) administration using treatment and preventative approaches. The severity of the inflammation was determined by the gross and histological assessments. The colonic level/activity of pro-inflammatory molecules and immune cell markers was assessed by immunofluorescence and western blotting analysis. In vitro neutrophil superoxide release and survival was assessed by chemilumenecense and Annexin-V/7AAD assays respectively. Results OBE treatment significantly reduced colitis severity in both approaches, the colonic expression/activity profile of pro-inflammatory molecules, inhibited WKYMVm-induced superoxide release, and increased spontaneous apoptosis of neutrophils in vitro. Conclusions OBE can be used as an effective option in the prevention and/or the treatment of established colitis.
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Affiliation(s)
- Maitham A. Khajah
- Faculty of Pharmacy, Department of Pharmacology and Therapeutics, Kuwait University, Safat, Kuwait
- * E-mail: ,
| | - Ahmed Z. EL-Hashim
- Faculty of Pharmacy, Department of Pharmacology and Therapeutics, Kuwait University, Safat, Kuwait
| | - Khaled Y. Orabi
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Kuwait University, Safat, Kuwait
| | - Sanaa Hawai
- Faculty of Pharmacy, Department of Pharmacology and Therapeutics, Kuwait University, Safat, Kuwait
| | - Hanan G. Sary
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Kuwait University, Safat, Kuwait
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100
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Lin EYH, Lai HJ, Cheng YK, Leong KQ, Cheng LC, Chou YC, Peng YC, Hsu YH, Chiang HS. Neutrophil Extracellular Traps Impair Intestinal Barrier Function during Experimental Colitis. Biomedicines 2020; 8:biomedicines8080275. [PMID: 32764411 PMCID: PMC7459452 DOI: 10.3390/biomedicines8080275] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 07/21/2020] [Accepted: 07/30/2020] [Indexed: 12/19/2022] Open
Abstract
Aberrant neutrophil extracellular trap (NET) formation and the loss of barrier integrity in inflamed intestinal tissues have long been associated with inflammatory bowel disease (IBD). However, whether NETs alter intestinal epithelium permeability during colitis remains elusive. Here, we demonstrated that NETs promote the breakdown in intestinal barrier function for the pathogenesis of intestinal inflammation in mouse models of colitis. NETs were abundant in the colon of mice with colitis experimentally induced by dextran sulfate sodium (DSS) or 2,4,6-trinitrobenzene sulfonic acid (TNBS). Analysis of the intestinal barrier integrity revealed that NETs impaired gut permeability, enabling the initiation of luminal bacterial translocation and inflammation. Furthermore, NETs induced the apoptosis of epithelial cells and disrupted the integrity of tight junctions and adherens junctions. Intravenous administration of DNase I, an enzyme that dissolves the web-like DNA filaments of NETs, during colitis restored the mucosal barrier integrity which reduced the dissemination of luminal bacteria and attenuated intestinal inflammation in both DSS and TNBS models. We conclude that NETs serve a detrimental factor in the gut epithelial barrier function leading to the pathogenesis of mucosal inflammation during acute colitis.
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Affiliation(s)
- Elliot Yi-Hsin Lin
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan; (E.Y.-H.L.); (H.-J.L.); (Y.-K.C.); (K.-Q.L.); (L.-C.C.); (Y.-C.P.); (Y.-H.H.)
| | - Hsuan-Ju Lai
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan; (E.Y.-H.L.); (H.-J.L.); (Y.-K.C.); (K.-Q.L.); (L.-C.C.); (Y.-C.P.); (Y.-H.H.)
| | - Yuan-Kai Cheng
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan; (E.Y.-H.L.); (H.-J.L.); (Y.-K.C.); (K.-Q.L.); (L.-C.C.); (Y.-C.P.); (Y.-H.H.)
| | - Kai-Quan Leong
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan; (E.Y.-H.L.); (H.-J.L.); (Y.-K.C.); (K.-Q.L.); (L.-C.C.); (Y.-C.P.); (Y.-H.H.)
| | - Li-Chieh Cheng
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan; (E.Y.-H.L.); (H.-J.L.); (Y.-K.C.); (K.-Q.L.); (L.-C.C.); (Y.-C.P.); (Y.-H.H.)
| | - Yi-Chun Chou
- Genome and Systems Biology Degree Program, National Taiwan University, Taipei 10617, Taiwan;
| | - Yu-Chun Peng
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan; (E.Y.-H.L.); (H.-J.L.); (Y.-K.C.); (K.-Q.L.); (L.-C.C.); (Y.-C.P.); (Y.-H.H.)
| | - Yi-Hsuan Hsu
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan; (E.Y.-H.L.); (H.-J.L.); (Y.-K.C.); (K.-Q.L.); (L.-C.C.); (Y.-C.P.); (Y.-H.H.)
| | - Hao-Sen Chiang
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan; (E.Y.-H.L.); (H.-J.L.); (Y.-K.C.); (K.-Q.L.); (L.-C.C.); (Y.-C.P.); (Y.-H.H.)
- Genome and Systems Biology Degree Program, National Taiwan University, Taipei 10617, Taiwan;
- Correspondence: ; Tel.: +886-2-3366-2454
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