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Qi Y, Wang H, Wu J, Wang R, Xu Z, Cui X, Liu Z. Microfluidic device reveals new insights into impairment of neutrophil transmigration in patients with sepsis. Biosens Bioelectron 2024; 260:116460. [PMID: 38843769 DOI: 10.1016/j.bios.2024.116460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 05/10/2024] [Accepted: 05/31/2024] [Indexed: 06/15/2024]
Abstract
Neutrophils need to migrate through tight tissue spaces to eliminate pathogens, but their movement is often hindered by their large and stiff nuclei. Neutrophil migration is impaired in sepsis patients, but it is unclear whether this defect is related to the deformability of their nuclei. Herein, we designed microfluidic devices with micron-scale narrow slits to simulate biological barriers. This setup allowed us to observe and record neutrophil movement and nuclear deformation in real-time. We also developed a method for morphological analysis to quantify nucleus deformation in numerous individual cells. Our studies showed that neutrophils from healthy individuals could adjust their nuclear shape to squeeze through these constrictions, whereas those from sepsis patients demonstrated less flexibility. Neutrophils with rigid nuclei struggled to pass through narrow gaps and were more likely to rupture under pressure. These findings suggest that the migration defects of neutrophils observed in sepsis may be attributed to the inability of neutrophils to deform their nuclei, highlighting the crucial role of microfluidic technologies in offering new insights into migration defects under pathological conditions.
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Affiliation(s)
- Yan Qi
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China
| | - Heyuan Wang
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, 130021, China
| | - Jiandong Wu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Runnan Wang
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China
| | - Zhihao Xu
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, 130021, China
| | - Xueling Cui
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China.
| | - Zhonghui Liu
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China.
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Jasper AE, Faniyi AA, Davis LC, Grudzinska FS, Halston R, Hazeldine J, Parekh D, Sapey E, Thickett DR, Scott A. E-cigarette vapor renders neutrophils dysfunctional due to filamentous actin accumulation. J Allergy Clin Immunol 2024; 153:320-329.e8. [PMID: 37678576 DOI: 10.1016/j.jaci.2023.08.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/23/2023] [Accepted: 08/18/2023] [Indexed: 09/09/2023]
Abstract
BACKGROUND Electronic cigarette (e-cigarette) use continues to rise despite concerns of long-term effects, especially the risk of developing lung diseases such as chronic obstructive pulmonary disease. Neutrophils are central to the pathogenesis of chronic obstructive pulmonary disease, with changes in phenotype and function implicated in tissue damage. OBJECTIVE We sought to measure the impact of direct exposure to nicotine-containing and nicotine-free e-cigarette vapor on human neutrophil function and phenotype. METHODS Neutrophils were isolated from the whole blood of self-reported nonsmoking, nonvaping healthy volunteers. Neutrophils were exposed to 40 puffs of e-cigarette vapor generated from e-cigarette devices using flavorless e-cigarette liquids with and without nicotine before functions, deformability, and phenotype were assessed. RESULTS Neutrophil surface marker expression was altered, with CD62L and CXCR2 expression significantly reduced in neutrophils treated with e-cigarette vapor containing nicotine. Neutrophil migration to IL-8, phagocytosis of Escherichia coli and Staphylococcus aureus pHrodo bioparticles, oxidative burst response, and phorbol 12-myristate 13-acetate-stimulated neutrophil extracellular trap formation were all significantly reduced by e-cigarette vapor treatments, independent of nicotine content. E-cigarette vapor induced increased levels of baseline polymerized filamentous actin levels in the cytoplasm, compared with untreated controls. CONCLUSIONS The significant reduction in effector neutrophil functions after exposure to high-power e-cigarette devices, even in the absence of nicotine, is associated with excessive filamentous actin polymerization. This highlights the potentially damaging impact of vaping on respiratory health and reinforces the urgency of research to uncover the long-term health implications of e-cigarettes.
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Affiliation(s)
- Alice E Jasper
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Aduragbemi A Faniyi
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Lauren C Davis
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Frances S Grudzinska
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Robyn Halston
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Jon Hazeldine
- National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
| | - Dhruv Parekh
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom; NIHR Clinical Research Facility, University Hospitals Birmingham NHS Foundation Trust, Edgbaston, Birmingham, United Kingdom; National Institute for Health and Care Research (NIHR) Birmingham Biomedical Research Centre, Institute of Translational Medicine, Birmingham, United Kingdom
| | - Elizabeth Sapey
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom; PIONEER HDR-UK Hub in Acute Care, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom; National Institute for Health and Care Research (NIHR) Birmingham Biomedical Research Centre, Institute of Translational Medicine, Birmingham, United Kingdom
| | - David R Thickett
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom; National Institute for Health and Care Research (NIHR) Birmingham Biomedical Research Centre, Institute of Translational Medicine, Birmingham, United Kingdom
| | - Aaron Scott
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom; National Institute for Health and Care Research (NIHR) Birmingham Biomedical Research Centre, Institute of Translational Medicine, Birmingham, United Kingdom.
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Cen T, Mai Y, Jin J, Huang M, Li M, Wang S, Ma H. Interleukin-41 diminishes cigarette smoke-induced lung inflammation in mice. Int Immunopharmacol 2023; 124:110794. [PMID: 37611444 DOI: 10.1016/j.intimp.2023.110794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/25/2023]
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) and other inflammatory lung illnesses are markedly exacerbated by cigarette smoke (CS). The novel cytokine interleukin (IL)-41 has immunoregulatory effects, but data on its function in lung inflammation caused by CS are limited and inconclusive. Our study aimed to investigate the ability of IL-41 to protect against CS-induced lung inflammation in vivo. METHODS In this model, mice were exposed to six cigarettes three times daily for 1 h, with 4-hour intervals between exposures, for 5 consecutive days. Mice received an intraperitoneal dose of IL-41 or a negative control 1 day prior to their initial exposure to CS. On day 6, mice were sacrificed to assess the impact of IL-41 on CS-induced lung inflammation. RESULTS We found that IL-41 pre-treatment alleviated pulmonary inflammatory infiltration and lung tissue lesions. IL-41 pre-treatment also limited CS-induced weight loss, and resulted in lower numbers of macrophages in the bronchoalveolar lavage fluid and lower percentages of neutrophils and monocytes in the blood. Furthermore, it promoted the polarization of M2 macrophages rather than M1 macrophages, as determined by immunohistochemistry. Consistent with its effects on M2 polarization, pre-treatment with IL-41 was associated with higher levels of IL-10 in the bronchoalveolar lavage fluid and lung tissues of CS-exposed animals and lower production of tumor necrosis factor-α, IL-6 and IL-1β in the serum and lung tissues. CONCLUSIONS These findings suggest that IL-41 could be used therapeutically to treat CS-induced lung inflammatory disorders as it inhibits CS-induced pulmonary inflammation when administered in vivo in mice.
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Affiliation(s)
- Tiantian Cen
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Ningbo, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China
| | - Yifeng Mai
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Ningbo, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China
| | - Jie Jin
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Ningbo, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China
| | - Minxuan Huang
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Ningbo, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China
| | - Mingcai Li
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Ningbo, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China.
| | - Shanshan Wang
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Ningbo, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China.
| | - Hongying Ma
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Ningbo, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China.
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Yee AJ, Kandasamy J, Ambalavanan N, Ren C, Halloran B, Olave N, Nicola T, Jilling T. Platelet Activating Factor Activity Modulates Hyperoxic Neonatal Lung Injury Severity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.14.532697. [PMID: 36993203 PMCID: PMC10055044 DOI: 10.1101/2023.03.14.532697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Hyperoxia-induced inflammation contributes significantly to developmental lung injury and bronchopulmonary dysplasia (BPD) in preterm infants. Platelet activating factor (PAF) is known to be a major driver of inflammation in lung diseases such as asthma and pulmonary fibrosis, but its role in BPD has not been previously investigated. Therefore, to determine whether PAF signaling independently modulates neonatal hyperoxic lung injury and BPD pathogenesis, lung structure was assessed in 14 day-old C57BL/6 wild-type (WT) and PAF receptor knockout (PTAFR KO) mice that were exposed to 21% (normoxia) or 85% O 2 (hyperoxia) from postnatal day 4. Lung morphometry showed that PTAFR KO mice had attenuated hyperoxia-induced alveolar simplification when compared to WT mice. Functional analysis of gene expression data from hyperoxia-exposed vs. normoxia-exposed lungs of WT and PTAFR KO showed that the most upregulated pathways were the hypercytokinemia/hyperchemokinemia pathway in WT mice, NAD signaling pathway in PTAFR KO mice, and agranulocyte adhesion and diapedesis as well as other pro-fibrotic pathways such as tumor microenvironment and oncostatin-M signaling in both mice strains, indicating that PAF signaling may contribute to inflammation but may not be a significant mediator of fibrotic processes during hyperoxic neonatal lung injury. Gene expression analysis also indicated increased expression of pro-inflammatory genes such as CXCL1, CCL2 and IL-6 in the lungs of hyperoxia-exposed WT mice and metabolic regulators such as HMGCS2 and SIRT3 in the lungs of PTAFR KO mice, suggesting that PAF signaling may modulate BPD risk through changes in pulmonary inflammation and/or metabolic reprogramming in preterm infants.
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Mansouri M, Ahmed A, Ahmad SD, McCloskey MC, Joshi IM, Gaborski TR, Waugh RE, McGrath JL, Day SW, Abhyankar VV. The Modular µSiM Reconfigured: Integration of Microfluidic Capabilities to Study In Vitro Barrier Tissue Models under Flow. Adv Healthc Mater 2022; 11:e2200802. [PMID: 35953453 PMCID: PMC9798530 DOI: 10.1002/adhm.202200802] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 08/01/2022] [Indexed: 01/28/2023]
Abstract
Microfluidic tissue barrier models have emerged to address the lack of physiological fluid flow in conventional "open-well" Transwell-like devices. However, microfluidic techniques have not achieved widespread usage in bioscience laboratories because they are not fully compatible with traditional experimental protocols. To advance barrier tissue research, there is a need for a platform that combines the key advantages of both conventional open-well and microfluidic systems. Here, a plug-and-play flow module is developed to introduce on-demand microfluidic flow capabilities to an open-well device that features a nanoporous membrane and live-cell imaging capabilities. The magnetic latching assembly of this design enables bi-directional reconfiguration and allows users to conduct an experiment in an open-well format with established protocols and then add or remove microfluidic capabilities as desired. This work also provides an experimentally-validated flow model to select flow conditions based on the experimental needs. As a proof-of-concept, flow-induced alignment of endothelial cells and the expression of shear-sensitive gene targets are demonstrated, and the different phases of neutrophil transmigration across a chemically stimulated endothelial monolayer under flow conditions are visualized. With these experimental capabilities, it is anticipated that both engineering and bioscience laboratories will adopt this reconfigurable design due to the compatibility with standard open-well protocols.
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Affiliation(s)
- Mehran Mansouri
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Adeel Ahmed
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - S. Danial Ahmad
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627, USA
| | - Molly C. McCloskey
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627, USA
| | - Indranil M. Joshi
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Thomas R. Gaborski
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Richard E. Waugh
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627, USA
| | - James L. McGrath
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627, USA
| | - Steven W. Day
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Vinay V. Abhyankar
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
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Tang H, He Y, Liang Z, Li J, Dong Z, Liao Y. The therapeutic effect of adipose-derived stem cells on soft tissue injury after radiotherapy and their value for breast reconstruction. Stem Cell Res Ther 2022; 13:493. [PMID: 36195925 PMCID: PMC9531407 DOI: 10.1186/s13287-022-02952-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/08/2022] [Indexed: 12/24/2022] Open
Abstract
Background Postmastectomy radiotherapy is considered to be a necessary treatment in the therapy of breast cancer, while it will cause soft tissue damage and complications, which are closely related to the success rate and effectiveness of breast reconstruction. After radiotherapy, cutaneous tissue becomes thin and brittle, and its compliance decreases. Component fat grafting and adipose-derived stem cell therapy are considered to have great potential in treating radiation damage and improving skin compliance after radiotherapy. Main body In this paper, the basic types and pathological mechanisms of skin and soft tissue damage to breast skin caused by radiation therapy are described. The 2015–2021 studies related to stem cell therapy in PubMed were also reviewed. Studies suggest that adipose-derived stem cells exert their biological effects mainly through cargoes carried in extracellular vesicles and soluble secreted factors. Compared to traditional fat graft breast reconstruction, ADSC therapy amplifies the effects of stem cells in it. In order to obtain a more purposeful therapeutic effect, proper stem cell pretreatment may achieve more ideal and safe results. Conclusion Recent research works about ADSCs and other MSCs mainly focus on curative effects in the acute phase of radiation injury, and there is little research about treatment of chronic phase complications. The efficacy of stem cell therapy on alleviating skin fibrosis and its underlying mechanism require further research.
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Affiliation(s)
- Haojing Tang
- The Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, Guangdong, China
| | - Yufei He
- The Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, Guangdong, China
| | - Zhuokai Liang
- The Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, Guangdong, China
| | - Jian Li
- The Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, Guangdong, China
| | - Ziqing Dong
- The Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, Guangdong, China.
| | - Yunjun Liao
- The Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, Guangdong, China.
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Wu T, Xu K, Liu C, Li Y, Li M. Interleukin-37 ameliorates cigarette smoke-induced lung inflammation in mice. Biomed Pharmacother 2022; 155:113684. [PMID: 36088857 DOI: 10.1016/j.biopha.2022.113684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/30/2022] [Accepted: 09/07/2022] [Indexed: 11/02/2022] Open
Abstract
Cigarette smoking (CS) is the leading cause of chronic obstructive pulmonary disease, and its severity is closely related to lung inflammation. Interleukin (IL)-37 is a newly discovered member of the IL-1 family with anti-inflammatory activity. Our study aimed to elucidate the effect of IL-37 on CS-induced lung inflammation in mice. In this study, mice were exposed to six cigarettes for 1 h three times daily (4 h smoke-free intervals) for 10 consecutive days. Mice were treated intranasally with IL-37-expressing lentivirus and empty lentivirus particles 1 day before the first CS or sham exposure. Mice were sacrificed on day 11 to evaluate the effect of IL-37 on CS-induced pulmonary inflammation in mice. Administering IL-37-expressing lentivirus significantly reduced CS-induced weight loss in mice compared to empty lentivirus controls (P < 0.05). Histological analysis showed that IL-37 significantly alleviated inflammatory cell recruitment, alveolar septum enlargement, alveolar wall attenuation, mucus hypersecretion, and goblet cell metaplasia in mouse lungs (P < 0.001). IL-37 expression also significantly inhibited CS-induced increases in inflammatory cells (including lymphocytes, neutrophils, and macrophages) in mouse lungs (P < 0.05), as well as pro-inflammatory cytokines such as IL-1β, IL-6, IL-17, monocyte chemotactic protein-1 and tumor necrosis factor-α production (P < 0.05). IL-37 also significantly reduced myeloperoxidase activity in mouse serum (P < 0.01) and lung tissues (P < 0.001). Therefore, IL-37 can ameliorate CS-induced pulmonary inflammation in mice and IL-37 may be a potential therapeutic strategy for CS-induced lung inflammatory diseases.
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Affiliation(s)
- Tingting Wu
- Department of Pulmonary and Critical Care Medicine, The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Immunology, Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
| | - Keye Xu
- Department of Immunology, Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
| | - Chaobo Liu
- Department of Immunology, Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
| | - Yan Li
- Department of Pulmonary and Critical Care Medicine, The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Immunology, Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China.
| | - Mingcai Li
- Department of Pulmonary and Critical Care Medicine, The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Immunology, Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China.
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Chen L, Xu W, Mao S, Zhu R, Zhang J. Autoantibody of interleukin-17A induced by recombinant Mycobacterium smegmatis attenuates airway inflammation in mice with neutrophilic asthma. J Asthma 2021; 59:2117-2126. [PMID: 34644222 DOI: 10.1080/02770903.2021.1989696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Previous studies have shown Interleukin (IL)-17A as an important contributor to the development of severe asthma, which is mainly characterized by neutrophilic inflammation and less response to corticosteroids. Consequently, the IL-17A-neutrophil axis could be a potential therapeutic target. Previously, we constructed a recombinant Mycobacterium smegmatis (rMS) expressing fusion protein Ag85A-IL-17A, and confirmed it could induce production of IL-17A autoantibody in vivo. This study uses a murine model of neutrophilic asthma to further investigate the effects of rMS on airway inflammation. METHODS DO11.10 mice were divided into four groups: phosphate buffered saline (PBS), asthma, rMS and MS. This murine model of neutrophilic asthma was established with ovalbumin (OVA) challenge, whereby PBS, rMS and MS were administered intranasally. Anti-inflammatory effects on inflammatory cell infiltration and expression of inflammatory mediators in bronchoalveolar lavage fluid (BALF) were evaluated, along with histopathological changes in lung tissues. RESULTS A sustained high-titer IL-17A autoantibody was detected in sera of the rMS group. Compared to the asthma group, the number of neutrophils, IL-17A, CXCL-1 levels and MPO activity in the rMS group were all significantly reduced (p < 0.01). Histological analysis showed rMS remarkably suppressed inflammatory infiltration around bronchia. The inflammation score and the mucus score in the rMS group were both significantly lower than those in the asthma group (p < 0.001). CONCLUSION rMS ameliorated airway inflammation in mice with neutrophilic asthma caused by inducing IL-17A autoantibody and regulating the IL-17A-neutrophil axis, thus offering a possible novel treatment for neutrophilic asthma.
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Affiliation(s)
- Ling Chen
- Department of Pediatrics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Wanting Xu
- Department of Neonatology, Shanghai First Maternity and Infant Hospital, Shanghai, China
| | - Song Mao
- Department of Pediatrics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Ruochen Zhu
- Department of Pediatrics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Jianhua Zhang
- Department of Pediatrics, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Honda A, Okuda T, Nagao M, Miyasaka N, Tanaka M, Takano H. PM2.5 collected using cyclonic separation causes stronger biological responses than that collected using a conventional filtration method. ENVIRONMENTAL RESEARCH 2021; 198:110490. [PMID: 33220242 DOI: 10.1016/j.envres.2020.110490] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/17/2020] [Accepted: 11/12/2020] [Indexed: 06/11/2023]
Abstract
Evaluation of the health effects of particulate matter with aerodynamic dias. ≤ 2.5 μm (PM2.5) should reflect realistic condition in ambient atmosphere. However, using conventional filtration methods, only extracts from PM2.5 collected on the filter can be analyzed and not the particle itself. Cyclonic separation is a technique that enables the direct analysis of the effects of the crude "powder form" of PM2.5 on respiratory health. Airway epithelial cells and antigen-presenting cells were exposed to PM2.5 collected during the same period using a conventional filtration method or cyclonic separation. PM2.5 collected using cyclonic separation led to a higher secretion of interleukins 6 and 8 (IL-6, IL-8) from airway epithelial cells, and IL-6, IL-1β, tumor necrosis factor-α (TNF-α) secretion, cluster of differentiation 86 (CD86), and dendritic and epithelial cells 205 (DEC205) expression on antigen-presenting cells, compared with the effects of filter-collected PM2.5. Furthermore, PM2.5 collected using cyclonic separation increased inflammatory cytokine levels and induced lung inflammation in vivo. These results suggest that crude PM2.5 collected using cyclonic separation causes stronger biological responses than filter-collected PM2.5. Hence, PM2.5 collected using cyclonic separation can be utilized for a reliable evaluation of the health effects of ambient PM2.5.
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Affiliation(s)
- Akiko Honda
- Graduate School of Global Environmental Studies, Kyoto University, Japan; Graduate School of Engineering, Kyoto University, Japan.
| | - Tomoaki Okuda
- Faculty of Science and Technology, Keio University, Kanagawa, Japan
| | - Megumi Nagao
- Graduate School of Global Environmental Studies, Kyoto University, Japan
| | - Natsuko Miyasaka
- Graduate School of Global Environmental Studies, Kyoto University, Japan
| | - Michitaka Tanaka
- Graduate School of Global Environmental Studies, Kyoto University, Japan
| | - Hirohisa Takano
- Graduate School of Global Environmental Studies, Kyoto University, Japan; Graduate School of Engineering, Kyoto University, Japan
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Fine N, Tasevski N, McCulloch CA, Tenenbaum HC, Glogauer M. The Neutrophil: Constant Defender and First Responder. Front Immunol 2020; 11:571085. [PMID: 33072112 PMCID: PMC7541934 DOI: 10.3389/fimmu.2020.571085] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/24/2020] [Indexed: 12/21/2022] Open
Abstract
The role of polymorphonuclear neutrophils (PMNs) in biology is often recognized during pathogenesis associated with PMN hyper- or hypo-functionality in various disease states. However, in the vast majority of cases, PMNs contribute to resilience and tissue homeostasis, with continuous PMN-mediated actions required for the maintenance of health, particularly in mucosal tissues. PMNs are extraordinarily well-adapted to respond to and diminish the damaging effects of a vast repertoire of infectious agents and injurious processes that are encountered throughout life. The commensal biofilm, a symbiotic polymicrobial ecosystem that lines the mucosal surfaces, is the first line of defense against pathogenic strains that might otherwise dominate, and is therefore of critical importance for health. PMNs regularly interact with the commensal flora at the mucosal tissues in health and limit their growth without developing an overt inflammatory reaction to them. These PMNs exhibit what is called a para-inflammatory phenotype, and have reduced inflammatory output. When biofilm growth and makeup are disrupted (i.e., dysbiosis), clinical symptoms associated with acute and chronic inflammatory responses to these changes may include pain, erythema and swelling. However, in most cases, these responses indicate that the immune system is functioning properly to re-establish homeostasis and protect the status quo. Defects in this healthy everyday function occur as a result of PMN subversion by pathological microbial strains, genetic defects or crosstalk with other chronic inflammatory conditions, including cancer and rheumatic disease, and this can provide some avenues for therapeutic targeting of PMN function. In other cases, targeting PMN functions could worsen the disease state. Certain PMN-mediated responses to pathogens, for example Neutrophil Extracellular Traps (NETs), might lead to undesirable symptoms such as pain or swelling and tissue damage/fibrosis. Despite collateral damage, these PMN responses limit pathogen dissemination and more severe damage that would otherwise occur. New data suggests the existence of unique PMN subsets, commonly associated with functional diversification in response to particular inflammatory challenges. PMN-directed therapeutic approaches depend on a greater understanding of this diversity. Here we outline the current understanding of PMNs in health and disease, with an emphasis on the positive manifestations of tissue and organ-protective PMN-mediated inflammation.
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Affiliation(s)
- Noah Fine
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
| | - Nikola Tasevski
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
| | | | - Howard C Tenenbaum
- Centre for Advanced Dental Research and Care, Mount Sinai Hospital, Toronto, ON, Canada
| | - Michael Glogauer
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada.,Centre for Advanced Dental Research and Care, Mount Sinai Hospital, Toronto, ON, Canada.,Department of Dental Oncology, Maxillofacial and Ocular Prosthetics, Princess Margaret Cancer Centre, Toronto, ON, Canada
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11
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Primed PMNs in healthy mouse and human circulation are first responders during acute inflammation. Blood Adv 2020; 3:1622-1637. [PMID: 31138591 DOI: 10.1182/bloodadvances.2018030585] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 03/31/2019] [Indexed: 12/17/2022] Open
Abstract
Polymorphonuclear neutrophils (PMNs) are the most abundant circulating leukocytes, and the first cells recruited to sites of tissue inflammation. Using a fixation method to preserve native CD marker expression prior to immunophenotyping, we identified a distinct population of "primed for recruitment" PMNs in healthy mouse and human blood that has high expression of adhesion and activation markers compared with the bulk resting-state PMNs. In response to acute tissue inflammation, primed PMNs (pPMNs) were rapidly depleted from the circulation and recruited to the tissue. One hour after acute peritoneal insult, pPMNs became the dominant PMN population in bone marrow (BM) and blood, returning to baseline levels with resolution of inflammation. PMN priming was induced by the granulopoietic factors granulocyte-macrophage-colony-stimulating factor (GM-CSF) and granulocyte-colony-stimulating factor (G-CSF). High levels of pPMNs were observed in neutropenic mice and in pediatric neutropenic patients who were resistant to infection, highlighting an important role of this population in innate immune function.
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McMinn PH, Hind LE, Huttenlocher A, Beebe DJ. Neutrophil trafficking on-a-chip: an in vitro, organotypic model for investigating neutrophil priming, extravasation, and migration with spatiotemporal control. LAB ON A CHIP 2019; 19:3697-3705. [PMID: 31576879 PMCID: PMC7045365 DOI: 10.1039/c9lc00562e] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Neutrophil trafficking is essential for a strong and productive immune response to infection and injury. During acute inflammation, signals from resident immune cells, fibroblasts, and the endothelium help to prime, attract, and activate circulating neutrophils at sites of inflammation. Due to current limitations with in vitro and animal models, our understanding of these events is incomplete. In this paper, we describe a microfluidic technology which incorporates a lumen-based vascular component with a high degree of spatiotemporal control to facilitate the study of neutrophil trafficking using primary human cells. The improved spatiotemporal control allows functional selection of neutrophils based on their migratory capacity. We use this technology to investigate neutrophil-endothelial interactions and find that these interactions are necessary for robust neutrophil chemotaxis to interleukin-8 (IL-8) and priming of the neutrophils. In agreement with previous studies, we observed that transendothelial migration (TEM) is required for neutrophils to enter a primed phenotypic state. TEM neutrophils not only produce a significantly higher amount of reactive oxygen species (ROS) when treated with PMA, but also upregulate genes involved in ROS production (CYBB, NCF1, NFKB1, NFKBIA), cell adhesion (CEACAM-8, ITGAM), and chemokine receptors (CXCR2, TNFRSF1A). These results suggest that neutrophil-endothelial interactions are crucial to neutrophil chemotaxis and ROS generation.
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Affiliation(s)
- Patrick H McMinn
- Department of Biomedical Engineering, University of Wisconsin - Madison, 1451 Engineering Dr., Madison, WI 53706, USA and University of Wisconsin Carbone Cancer Center, Wisconsin Institutes for Medical Research, 1111 Highland Ave., Madison, WI 53705, USA
| | - Laurel E Hind
- Department of Medical Microbiology and Immunology, University of Wisconsin - Madison, Madison, WI 53706, USA
| | - Anna Huttenlocher
- Department of Medical Microbiology and Immunology, University of Wisconsin - Madison, Madison, WI 53706, USA and Department of Pediatrics, University of Wisconsin - Madison, Madison, WI 53706, USA
| | - David J Beebe
- Department of Biomedical Engineering, University of Wisconsin - Madison, 1451 Engineering Dr., Madison, WI 53706, USA and University of Wisconsin Carbone Cancer Center, Wisconsin Institutes for Medical Research, 1111 Highland Ave., Madison, WI 53705, USA and Department of Pathology and Laboratory Medicine, University of Wisconsin - Madison, Madison, WI 53706, USA
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Xing D, Wells JM, Giordano SS, Feng W, Gaggar A, Yan J, Hage FG, Li L, Chen YF, Oparil S. Induced pluripotent stem cell-derived endothelial cells attenuate lipopolysaccharide-induced acute lung injury. J Appl Physiol (1985) 2019; 127:444-456. [PMID: 31295064 PMCID: PMC6732441 DOI: 10.1152/japplphysiol.00587.2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 06/11/2019] [Accepted: 06/27/2019] [Indexed: 02/08/2023] Open
Abstract
The chemokine receptors CXCR1/2 and CCR2/5 play a critical role in neutrophil and monocyte recruitment to sites of injury and/or inflammation. Neutrophil-mediated inflammation and endothelial cell (EC) injury are unifying factors in the pathogenesis of the acute respiratory distress syndrome. This study tested the hypothesis that systemic administration of rat-induced pluripotent stem cell (iPS)-derived ECs (iPS-ECs) overexpressing CXCR1/2 or CCR2/5 attenuates lipopolysaccharide (LPS)-induced acute lung injury. Rat iPS-ECs were transduced with adenovirus containing cDNA of CXCR1/2 or CCR2/5. Ovariectomized Sprague-Dawley rats (10 wk old) received intraperitoneal injection of LPS and intravenous infusion of 1) saline vehicle, 2) AdNull-iPS-ECs (iPS-ECs transduced with empty adenoviral vector), 3) CXCR1/2-iPS-ECs (iPS-ECs overexpressing CXCR1/2), or 4) CCR2/5-iPS-ECs (iPS-ECs overexpressing CCR2/5) at 2 h post-LPS. Rats receiving intraperitoneal injection of saline served as sham controls. Later (4 h), proinflammatory cytokine/chemokine mRNA and protein levels were measured in total lung homogenates by real-time RT-PCR and Luminex multiplex assays, and neutrophil and macrophage infiltration in alveoli was measured by immunohistochemical staining. Pulmonary microvascular permeability was assessed by the Evans blue technique, and pulmonary edema was estimated by wet-to-dry lung weight ratios. Albumin levels and neutrophil counts were assessed in bronchoalveolar lavage fluid at 24 h post-LPS. Both CXCR1/2-iPS-ECs and CCR2/5-iPS-ECs significantly reduced LPS-induced proinflammatory mediator expression, neutrophil and macrophage infiltration, pulmonary edema, and vascular permeability compared with controls. These provocative findings provide strong evidence that targeted delivery of iPS-ECs overexpressing CXCR1/2 or CCR2/5 prevents LPS-induced acute lung injury.NEW & NOTEWORTHY We have developed a novel approach to address neutrophil-mediated inflammation and endothelial damage by targeted delivery of rat-induced pluripotent stem cell (iPS)-derived endothelial cell (ECs)overexpressing chemokine receptors CXCR1/2 and CCR2/5 in injured lung tissue in a model of acute lung injury. We have demonstrated that intravenously transfused CXCR1/2-iPS-ECs and CCR2/5-iPS-ECs are recruited to lipopolysaccharide-injured lungs and attenuate lipopolysaccharide-induced parenchymal lung injury responses, including inflammatory mediator expression, inflammatory cell infiltration, and vascular leakage compared with controls.
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Affiliation(s)
- Dongqi Xing
- Division of Pulmonary, Allergy & Critical Care Medicine, Lung Health Center, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - J Michael Wells
- Division of Pulmonary, Allergy & Critical Care Medicine, Lung Health Center, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
- Birmingham Veterans Affairs Medical Center, Birmingham, Alabama
| | - Samantha S Giordano
- Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Wenguang Feng
- Division of Nephrology, Nephrology Research and Training Center, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Amit Gaggar
- Division of Pulmonary, Allergy & Critical Care Medicine, Lung Health Center, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
- Birmingham Veterans Affairs Medical Center, Birmingham, Alabama
| | - Jie Yan
- Department of Pathology, University of New Mexico, Albuquerque, New Mexico
| | - Fadi G Hage
- Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
- Birmingham Veterans Affairs Medical Center, Birmingham, Alabama
| | - Li Li
- Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
- Department of Physiology, School of Medicine, Shihezi University, Xinjiang, China
| | - Yiu-Fai Chen
- Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Suzanne Oparil
- Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
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14
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Different Faces for Different Places: Heterogeneity of Neutrophil Phenotype and Function. J Immunol Res 2019; 2019:8016254. [PMID: 30944838 PMCID: PMC6421822 DOI: 10.1155/2019/8016254] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/22/2018] [Accepted: 01/03/2019] [Indexed: 02/05/2023] Open
Abstract
As the most abundant leukocytes in the circulation, neutrophils are committed to innate and adaptive immune effector function to protect the human body. They are capable of killing intruding microbes through various ways including phagocytosis, release of granules, and formation of extracellular traps. Recent research has revealed that neutrophils are heterogeneous in phenotype and function and can display outstanding plasticity in both homeostatic and disease states. The great flexibility and elasticity arm neutrophils with important regulatory and controlling functions in various disease states such as autoimmunity and inflammation as well as cancer. Hence, this review will focus on recent literature describing neutrophils' variable and diverse phenotypes and functions in different contexts.
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Abstract
In this issue of Cell Chemical Biology, Knoops et al. (2018) use a novel approach in immunology: combining confocal microscopy and atomic force microscopy to unravel the specific interaction of oxidized peroxiredoxin-5 with Toll-like receptor 4 that leads to the release of interleukin-1β and the stiffening of mammalian cells.
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Affiliation(s)
- Richard Newton
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, 4058 Basel, Switzerland
| | - Daniel J Müller
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, 4058 Basel, Switzerland.
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Morales N, Henriquez C, Sarmiento J, Uberti B, Moran G. Tamoxifen inhibits chemokinesis in equine neutrophils. Ir Vet J 2018; 71:22. [PMID: 30386589 PMCID: PMC6199699 DOI: 10.1186/s13620-018-0133-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 10/17/2018] [Indexed: 11/21/2022] Open
Abstract
Neutrophils are terminally differentiated innate effector cells at the first line of host defense. Neutrophil migration within tissues is complex and involves several steps, during which these cells must be able to interpret a variety of chemical and physical signals. Exacerbated neutrophil activity can be harmful to surrounding tissues; this is important in a range of diseases, including equine asthma. Tamoxifen (TX) is a non-steroidal estrogen receptor modulator with effects on cell growth and survival. Previous studies showed that TX treatment in horses with induced acute pulmonary inflammation promoted early apoptosis of blood and bronchoalveolar lavage fluid (BALF) neutrophils, reduction of BALF neutrophil content, and improvement in animals’ clinical status. Further, TX dampens chemotactic index and respiratory burst production in vitro. The aim of this study was to provide information on the effect of TX on chemokinesis in peripheral blood neutrophils from five healthy horses. Results showed that neutrophils increased migration and travelled distance in response to IL-8; but in the presence of TX, IL-8 did not produce neutrophil migration. This suggests that TX has an inhibitory effect on the kinesis of equine peripheral blood neutrophils stimulated with IL-8. However, further studies are required to fully understand the signaling pathways of TX on neutrophil chemokinesis.
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Affiliation(s)
- Natalia Morales
- 1Department of Pharmacology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Claudio Henriquez
- 1Department of Pharmacology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Jose Sarmiento
- 2Department of Physiology, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile
| | - Benjamin Uberti
- 3Department of Veterinary Clinical Sciences, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Gabriel Moran
- 1Department of Pharmacology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
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Pang M, Liu HY, Li T, Wang D, Hu XY, Zhang XR, Yu BF, Guo R, Wang HL. Recombinant club cell protein 16 (CC16) ameliorates cigarette smoke‑induced lung inflammation in a murine disease model of COPD. Mol Med Rep 2018; 18:2198-2206. [PMID: 29956762 PMCID: PMC6072201 DOI: 10.3892/mmr.2018.9216] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 06/21/2018] [Indexed: 11/21/2022] Open
Abstract
Club cell protein (CC16) is expressed primarily by club cells possesses anti-inflammatory properties and is located in the bronchiolar epithelium. Previous studies have demonstrated that CC16 deficiency is associated with the progression of chronic obstructive pulmonary disease (COPD). In the present study, the therapeutic effects of recombinant rat CC16 protein in mice with COPD were examined and the underlying mechanisms investigated. A total of 30 adult male C57/BL6 mice were randomly divided into three groups (10 mice/group). A mouse COPD model was generated by exposing 20 mice to cigarette smoke (CS) for 24 weeks. A total of 10 mice were treated intranasally with rCC16 (2.5 µg/g body weight) and control mice were exposed to normal room air. Results indicated that rCC16 treatment ameliorated pathological damage in the lungs and reduced the production of tumor necrosis factor (TNF)-α, interleukin (IL)-6 and IL-8, which were induced by CS exposure. After rCC16 administration, endogenous CC16 was upregulated and the body weight of COPD mice was increased, whereas the opposite was observed in CS-exposed mice. Additionally, rCC16 treatment inhibited the DNA binding of NF-κB/p65 in lung tissues and reduced nuclear translocation of NF-κB/p65 in BALF and epithelial cells. Moreover, rCC16 treatment lead to a decrease in the total number of BALF cells, including macrophages, which was elevated in COPD mice. In conclusion, the present results demonstrate that rCC16 has therapeutic effects on COPD by downregulating pro-inflammatory factors via the NF-κB pathway.
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Affiliation(s)
- Min Pang
- Department of Respiratory Medicine, The First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Hong-Yan Liu
- School of Basic Medicine; Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Ting Li
- Department of Respiratory Medicine, The First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Dan Wang
- Department of Respiratory Medicine, The First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xiao-Yun Hu
- Department of Respiratory Medicine, The First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xin-Ri Zhang
- Department of Respiratory Medicine, The First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Bao-Feng Yu
- School of Basic Medicine; Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Rui Guo
- School of Basic Medicine; Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Hai-Long Wang
- School of Basic Medicine; Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
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Neutrophils in Tissue Trauma of the Skin, Bone, and Lung: Two Sides of the Same Coin. J Immunol Res 2018; 2018:8173983. [PMID: 29850639 PMCID: PMC5937416 DOI: 10.1155/2018/8173983] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 03/21/2018] [Indexed: 12/12/2022] Open
Abstract
Following severe tissue injury, patients are exposed to various danger- and microbe-associated molecular patterns, which provoke a strong activation of the neutrophil defense system. Neutrophils trigger and modulate the initial posttraumatic inflammatory response and contribute critically to subsequent repair processes. However, severe trauma can affect central neutrophil functions, including circulation half-life, chemokinesis, phagocytosis, cytokine release, and respiratory burst. Alterations in neutrophil biology may contribute to trauma-associated complications, including immune suppression, sepsis, multiorgan dysfunction, and disturbed tissue regeneration. Furthermore, there is evidence that neutrophil actions depend on the quality of the initial stimulus, including trauma localization and severity, the micromilieu in the affected tissue, and the patient's overall inflammatory status. In the present review, we describe the effects of severe trauma on the neutrophil phenotype and dysfunction and the consequences for tissue repair. We particularly concentrate on the role of neutrophils in wound healing, lung injury, and bone fractures, because these are the most frequently affected tissues in severely injured patients.
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19
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Simultaneous Measurement of Multiple Mechanical Properties of Single Cells Using AFM by Indentation and Vibration. IEEE Trans Biomed Eng 2017; 64:2771-2780. [DOI: 10.1109/tbme.2017.2674663] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Mehrnezhad A, Park K. Multifrequency Optomechanical Stiffness Measurement of Single Adherent Cells on a Solid Substrate with High Throughput. Anal Chem 2017; 89:10841-10849. [PMID: 28895727 DOI: 10.1021/acs.analchem.7b02356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Mechanical properties of a cell reflect its biological and pathological conditions and there have been active research efforts to develop high-throughput platforms to mechanically characterize single cells. Yet, many of these research efforts are focused on suspended cells and use a flow-through configuration. In this paper, the stiffness of single adherent cells are optomechanically characterized using the vibration-induced phase shift (VIPS) without detaching them from the substrate. With the VIPS measurements, the frequency and amplitude dependency of the cell stiffness is investigated and statistically significant difference in the cell stiffness is confirmed after exposure to various drugs affecting cytoskeleton network. Furthermore, a 3-dimensional finite element model of a cell on a vibrating substrate is developed to extract the mechanical property from the measured VIPS. The developed technique can characterize the mechanical properties of single adherent cells at multiple frequencies with high throughput and will provide valuable clues in understanding cell mechanics.
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Affiliation(s)
- Ali Mehrnezhad
- Division of Electrical and Computer Engineering, Electrical Engineering Building, Louisiana State University , Baton Rouge, Louisiana 70809, United States
| | - Kidong Park
- Division of Electrical and Computer Engineering, Electrical Engineering Building, Louisiana State University , Baton Rouge, Louisiana 70809, United States
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21
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Lee G, Jung KH, Ji ES, Bae H. Pyranopyran-1,8-dione, an Active Compound from Vitices Fructus, Attenuates Cigarette-Smoke Induced Lung Inflammation in Mice. Int J Mol Sci 2017; 18:ijms18071602. [PMID: 28737721 PMCID: PMC5536088 DOI: 10.3390/ijms18071602] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 07/21/2017] [Accepted: 07/21/2017] [Indexed: 01/10/2023] Open
Abstract
Previously, we isolated and identified pyranopyran-1,8-dione (PPY) from Viticis Fructus, as a bioactive compound possessing anti-inflammatory properties. The present study was aimed to evaluate the preventive benefit of PPY on cigarette-smoke (CS)-induced lung inflammation. C57BL/6 mice were exposed to CS for 2 weeks while PPY was administrated by oral injection 2 h before CS exposure. To validate the anti-inflammatory effects of PPY, the numbers of immune cells in the bronchoalveolar lavage fluid were counted. Proinflammatory cytokines (Tumor necrosis factor-α: TNF-α, IL-6) and keratinocyte chemokine (KC/CXCL1) were also measured. Histopathologic analysis and cellular profiles showed that inflammatory cell infiltrations were significantly decreased in peribronchial and perivascular area by PPY treatment. The alveolar destruction by CS was markedly ameliorated by PPY treatment. In addition, the TNF-α, IL-6, and KC levels were declined in the PPY groups. These observations suggest that PPY has a preventive potential for lung inflammatory diseases.
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Affiliation(s)
- Gihyun Lee
- Department of Physiology, College of Korean Medicine, Kyung Hee University, 26 kyungheedae-ro, dongdaemoon-gu, Seoul 02447, Republic of Korea.
| | - Kyung-Hwa Jung
- Department of Physiology, College of Korean Medicine, Kyung Hee University, 26 kyungheedae-ro, dongdaemoon-gu, Seoul 02447, Republic of Korea.
| | - Eun Seok Ji
- Department of Physiology, College of Korean Medicine, Kyung Hee University, 26 kyungheedae-ro, dongdaemoon-gu, Seoul 02447, Republic of Korea.
| | - Hyunsu Bae
- Department of Physiology, College of Korean Medicine, Kyung Hee University, 26 kyungheedae-ro, dongdaemoon-gu, Seoul 02447, Republic of Korea.
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22
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Miralda I, Uriarte SM, McLeish KR. Multiple Phenotypic Changes Define Neutrophil Priming. Front Cell Infect Microbiol 2017; 7:217. [PMID: 28611952 PMCID: PMC5447094 DOI: 10.3389/fcimb.2017.00217] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 05/11/2017] [Indexed: 12/15/2022] Open
Abstract
Exposure to pro-inflammatory cytokines, chemokines, mitochondrial contents, and bacterial and viral products induces neutrophils to transition from a basal state into a primed one, which is currently defined as an enhanced response to activating stimuli. Although, typically associated with enhanced generation of reactive oxygen species (ROS) by the NADPH oxidase, primed neutrophils show enhanced responsiveness of exocytosis, NET formation, and chemotaxis. Phenotypic changes associated with priming also include activation of a subset of functions, including adhesion, transcription, metabolism, and rate of apoptosis. This review summarizes the breadth of phenotypic changes associated with priming and reviews current knowledge of the molecular mechanisms behind those changes. We conclude that the current definition of priming is too restrictive. Priming represents a combination of enhanced responsiveness and activated functions that regulate both adaptive and innate immune responses.
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Affiliation(s)
- Irina Miralda
- Department of Microbiology, University of Louisville School of MedicineLouisville, KY, United States
| | - Silvia M Uriarte
- Department of Microbiology, University of Louisville School of MedicineLouisville, KY, United States.,Department of Medicine, University of Louisville School of MedicineLouisville, KY, United States
| | - Kenneth R McLeish
- Department of Medicine, University of Louisville School of MedicineLouisville, KY, United States.,Robley Rex VA Medical CenterLouisville, KY, United States
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Janesch P, Rouha H, Weber S, Malafa S, Gross K, Maierhofer B, Badarau A, Visram ZC, Stulik L, Nagy E. Selective sensitization of human neutrophils to LukGH mediated cytotoxicity by Staphylococcus aureus and IL-8. J Infect 2017; 74:473-483. [PMID: 28237625 DOI: 10.1016/j.jinf.2017.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 02/14/2017] [Accepted: 02/17/2017] [Indexed: 01/03/2023]
Abstract
OBJECTIVES Staphylococcus aureus produces up to five bi-component leukocidins - LukSF-PV, gamma-hemolysins AB and CB, LukGH (LukAB) and LukED - to evade innate immunity by lysing phagocytic cells. Species specificity of these leukocidins limits the relevance of animal models, therefore we assessed their individual contribution using human neutrophils. METHODS Human polymorphonuclear leukocytes (PMNs) were activated with stimuli relevant during bacterial infections and sensitivity to recombinant leukocidins was measured in cell-viability assays. Leukocidin receptor expression was quantified by flow cytometry. RESULTS We observed greatly variable sensitivities of different PMN preparations towards LukGH. Activation of PMNs by lipopolysaccharide (LPS) or S. aureus culture supernatant (CS) lacking all leukocidins resulted in higher surface expression of CD11b, the LukGH receptor, and greatly enhanced the sensitivity towards LukGH, eliminating the variability observed with unstimulated cells. In contrast, CS induced a decrease in sensitivity of PMNs to the other four leukocidins and reduced surface staining for their cognate receptors (CXCR1, CXCR2, C5aR, C5L2). Delta-toxin and peptidoglycan mimicked the effect of CS. Moreover, IL-8, an important cytokine in neutrophil activation, also selectively increased LukGH sensitivity. Deletion of lukGH, but not other leukocidin genes, prevented PMN killing upon infection with USA300 CA-MRSA. CONCLUSION Inflammatory signals enhance the susceptibility of human PMNs to lysis by LukGH rendering this toxin dominant among the S. aureus leukocidins in vitro.
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Juss JK, House D, Amour A, Begg M, Herre J, Storisteanu DML, Hoenderdos K, Bradley G, Lennon M, Summers C, Hessel EM, Condliffe A, Chilvers ER. Acute Respiratory Distress Syndrome Neutrophils Have a Distinct Phenotype and Are Resistant to Phosphoinositide 3-Kinase Inhibition. Am J Respir Crit Care Med 2016; 194:961-973. [PMID: 27064380 PMCID: PMC5067816 DOI: 10.1164/rccm.201509-1818oc] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 03/29/2016] [Indexed: 01/08/2023] Open
Abstract
RATIONALE Acute respiratory distress syndrome is refractory to pharmacological intervention. Inappropriate activation of alveolar neutrophils is believed to underpin this disease's complex pathophysiology, yet these cells have been little studied. OBJECTIVES To examine the functional and transcriptional profiles of patient blood and alveolar neutrophils compared with healthy volunteer cells, and to define their sensitivity to phosphoinositide 3-kinase inhibition. METHODS Twenty-three ventilated patients underwent bronchoalveolar lavage. Alveolar and blood neutrophil apoptosis, phagocytosis, and adhesion molecules were quantified by flow cytometry, and oxidase responses were quantified by chemiluminescence. Cytokine and transcriptional profiling were used in multiplex and GeneChip arrays. MEASUREMENTS AND MAIN RESULTS Patient blood and alveolar neutrophils were distinct from healthy circulating cells, with increased CD11b and reduced CD62L expression, delayed constitutive apoptosis, and primed oxidase responses. Incubating control cells with disease bronchoalveolar lavage recapitulated the aberrant functional phenotype, and this could be reversed by phosphoinositide 3-kinase inhibitors. In contrast, the prosurvival phenotype of patient cells was resistant to phosphoinositide 3-kinase inhibition. RNA transcriptomic analysis revealed modified immune, cytoskeletal, and cell death pathways in patient cells, aligning closely to sepsis and burns datasets but not to phosphoinositide 3-kinase signatures. CONCLUSIONS Acute respiratory distress syndrome blood and alveolar neutrophils display a distinct primed prosurvival profile and transcriptional signature. The enhanced respiratory burst was phosphoinositide 3-kinase-dependent but delayed apoptosis and the altered transcriptional profile were not. These unexpected findings cast doubt over the utility of phosphoinositide 3-kinase inhibition in acute respiratory distress syndrome and highlight the importance of evaluating novel therapeutic strategies in patient-derived cells.
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Affiliation(s)
- Jatinder K. Juss
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - David House
- Refractory Respiratory Inflammation Discovery Performance Unit and
| | - Augustin Amour
- Refractory Respiratory Inflammation Discovery Performance Unit and
| | - Malcolm Begg
- Refractory Respiratory Inflammation Discovery Performance Unit and
| | - Jurgen Herre
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | | | - Kim Hoenderdos
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Glyn Bradley
- Target Sciences, GlaxoSmithKline, Stevenage, United Kingdom; and
| | - Mark Lennon
- Target Sciences, GlaxoSmithKline, Stevenage, United Kingdom; and
| | - Charlotte Summers
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Edith M. Hessel
- Refractory Respiratory Inflammation Discovery Performance Unit and
| | - Alison Condliffe
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Edwin R. Chilvers
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
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Lim D, Cho Y, Kim W, Jeong S, Jang YP, Kim J. Original Research: Extract of Bambusae Caulis in Taeniam inhibits cigarette smoke-induced pulmonary and intestinal inflammation. Exp Biol Med (Maywood) 2016; 242:102-112. [PMID: 27590499 DOI: 10.1177/1535370216664429] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 07/21/2016] [Indexed: 12/12/2022] Open
Abstract
The pulmonary and intestinal systems have several characteristics in common. It is believed that these similarities somehow function to cause pulmonary-intestinal crosstalk during inflammation. Many studies have shown that pulmonary disease occurs in association with inflammatory bowel disease more often than is commonly recognized. Bambusae Caulis in Taeniam, a medicinal herb originated from the inner bark of Phyllostachys nigra var. henosis (Milford) Rendle (Poaceae), has been used to cure fever, diarrhea, and chest inflammation in Korea as well as in China. Cigarette smoke is a well-known risk factor for several inflammatory disorders. In this study, we induced pulmonary and bowel inflammation in mice using cigarette smoke and investigated whether Bambusae Caulis in Taeniam extract modulates the inflammatory response in both the lung and the bowel. C57BL/6 mice were exposed to cigarette smoke for 90 min per day for three weeks, and Bambusae Caulis in Taeniam extract was administered via oral injection 2 h before cigarette smoke exposure. The bronchoalveolar lavage cells were counted and hematoxylin and eosin staining were performed. Levels of inflammatory mediators in lung and large intestine were determined by enzyme-linked immunosorbent assay, real-time polymerase chain reaction, and Western blotting. Our results showed that Bambusae Caulis in Taeniam attenuated cigarette smoke-induced inflammatory response in both the lung and the bowel of mice by inhibiting the production of pro-inflammatory cytokines, chemokines, and protease as well as NF-κB signaling factor. Therefore, we suggest that Bambusae Caulis in Taeniam extract might be a candidate therapeutic agent for inhibiting pulmonary and intestinal inflammation.
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Affiliation(s)
- Dahae Lim
- Department of Korean Physiology, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Youngwoo Cho
- Department of Korean Physiology, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Woogyeong Kim
- Department of Korean Physiology, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sehee Jeong
- Department of Pharmacognosy, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Young Pyo Jang
- Department of Pharmacognosy, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jinju Kim
- Department of Korean Physiology, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
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Petrovich E, Feigelson SW, Stoler-Barak L, Hatzav M, Solomon A, Bar-Shai A, Ilan N, Li JP, Engelhardt B, Vlodavsky I, Alon R. Lung ICAM-1 and ICAM-2 support spontaneous intravascular effector lymphocyte entrapment but are not required for neutrophil entrapment or emigration inside endotoxin-inflamed lungs. FASEB J 2016; 30:1767-78. [PMID: 26823454 DOI: 10.1096/fj.201500046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Accepted: 12/22/2015] [Indexed: 11/11/2022]
Abstract
The pulmonary vasculature constitutively expresses the integrin lymphocyte function-associated antigen-1 ligands intercellular adhesion molecule (ICAM)-1 and -2. In this study, effector T cells were temporarily entrapped by the lung vasculature on their way to inflamed lymph nodes, and this entrapment was strongly reduced in ICAM-1 and -2 double-deficient mice (79 and 86% reduction for CD8(+) and CD4(+) effectors, respectively, compared with wild-type mice). Although the pulmonary vasculature has been suggested to be masked by the heparan sulfate-containing glycocalyx, which is susceptible to heparanase-mediated shedding, lung and lymphocyte heparanase have been found to be unnecessary for this entrapment. Systemic LPS induced rapid neutrophil entrapment in the lung vasculature, but in contrast to T-cell entrapment, this sequestration was ICAM-1, ICAM-2, and heparanase independent. Furthermore, neutrophil migration into the bronchoalveolar space induced by LPS inhalation and LPS-induced leakage of red blood cells into this space were not dependent on lung ICAMs or heparanase activity. Nevertheless, heparanase was critical for neutrophil accumulation in smoke-exposed lungs. Our results indicate that, whereas T cells use ICAM-1 and -2 for temporary pulmonary entrapment, neutrophils get sequestered and extravasate into inflamed lungs independent of ICAMs. This is the first demonstration that the pulmonary vasculature is differentially recognized by T cells and neutrophils.-Petrovich, E., Feigelson, S. W., Stoler-Barak, L., Hatzav, M., Solomon, A., Bar-Shai, A., Ilan, N., Li, J.-P., Engelhardt, B., Vlodavsky, I., Alon, R. Lung ICAM-1 and ICAM-2 support spontaneous intravascular effector lymphocyte entrapment but are not required for neutrophil entrapment or emigration inside endotoxin-inflamed lungs.
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Affiliation(s)
- Ekaterina Petrovich
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Sara W Feigelson
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Liat Stoler-Barak
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Miki Hatzav
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Adam Solomon
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Amir Bar-Shai
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Neta Ilan
- Cancer and Vascular Biology Research Center, The Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Jin-Ping Li
- Department of Medical Biochemistry and Microbiology, University of Uppsala, Uppsala, Sweden; and
| | | | - Israel Vlodavsky
- Cancer and Vascular Biology Research Center, The Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Ronen Alon
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel;
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Jung KH, Kil YS, Jung J, Park S, Shin D, Lee K, Seo EK, Bae H. Tuberostemonine N, an active compound isolated from Stemona tuberosa, suppresses cigarette smoke-induced sub-acute lung inflammation in mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:79-86. [PMID: 26902410 DOI: 10.1016/j.phymed.2015.11.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 10/20/2015] [Accepted: 11/24/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVE Our previous study demonstrated that a Stemona tuberosa extract had significant effects on cigarette smoking (CS)-induced lung inflammation in mice. The present study evaluated the potential of tuberostemonine N (T.N) to prevent airway inflammation and suppress airway responses in a CS-induced in vivo COPD model. METHODS T.N was isolated from the root of ST and analyzed using 1D and 2D NMR. The purity of T.N was accessed using HPLC-ELSD analysis. C57BL/6 mice in this study were whole-body exposed to mainstream CS or room air for 4 weeks, and T.N (1, 5 and 10 mg/kg body wt.) was administered to mice via intraperitoneal (i.p.) injection before CS exposure. The number of inflammatory cells, including neutrophils, macrophages and lymphocytes, and the amount of proinflammatory cytokines and chemokines were accessed from bronchoalveolar lavage fluid (BALF) to investigate the anti-inflammatory effects of T.N. Average alveoli size was also measured using histological analyses. RESULTS Cellular profiles and histopathological analyses revealed that the infiltration of peribronchial and perivascular inflammatory cells decreased significantly in the T.N-treated groups compared to the CS-exposed control group. T.N significantly inhibited the secretion of proinflammatory cytokines and chemokines in BALF and decreased alveoli size in lung tissue. CONCLUSIONS These data suggest that T.N exerts anti-inflammatory effects against airway inflammation, and T.N may be a novel therapeutic agent for lung diseases, such as COPD.
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Affiliation(s)
- Kyung-Hwa Jung
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea
| | - Yun-Seo Kil
- College of Pharmacy, Graduate School of Pharmaceutical Sciences (Ewha Global Top 5 Program), Ewha Womans University, Seoul 120-750, Korea
| | - Jaehoon Jung
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea
| | - Soojin Park
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea
| | - Dasom Shin
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea
| | - Kyeseok Lee
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea
| | - Eun Kyoung Seo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences (Ewha Global Top 5 Program), Ewha Womans University, Seoul 120-750, Korea.
| | - Hyunsu Bae
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea.
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Preira P, Forel JM, Robert P, Nègre P, Biarnes-Pelicot M, Xeridat F, Bongrand P, Papazian L, Theodoly O. The leukocyte-stiffening property of plasma in early acute respiratory distress syndrome (ARDS) revealed by a microfluidic single-cell study: the role of cytokines and protection with antibodies. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2016; 20:8. [PMID: 26757701 PMCID: PMC4711060 DOI: 10.1186/s13054-015-1157-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 12/06/2015] [Indexed: 12/19/2022]
Abstract
Background Leukocyte-mediated pulmonary inflammation is a key pathophysiological mechanism involved in acute respiratory distress syndrome (ARDS). Massive sequestration of leukocytes in the pulmonary microvasculature is a major triggering event of the syndrome. We therefore investigated the potential role of leukocyte stiffness and adhesiveness in the sequestration of leukocytes in microvessels. Methods This study was based on in vitro microfluidic assays using patient sera. Cell stiffness was assessed by measuring the entry time (ET) of a single cell into a microchannel with a 6 × 9–μm cross-section under a constant pressure drop (ΔP = 160 Pa). Primary neutrophils and monocytes, as well as the monocytic THP-1 cell line, were used. Cellular adhesiveness to human umbilical vein endothelial cells was examined using the laminar flow chamber method. We compared the properties of cells incubated with the sera of healthy volunteers (n = 5), patients presenting with acute cardiogenic pulmonary edema (ACPE; n = 6), and patients with ARDS (n = 22), of whom 13 were classified as having moderate to severe disease and the remaining 9 as having mild disease. Results Rapid and strong stiffening of primary neutrophils and monocytes was induced within 30 minutes (mean ET >50 seconds) by sera from the ARDS group compared with both the healthy subjects and the ACPE groups (mean ET <1 second) (p < 0.05). Systematic measurements with the THP-1 cell line allowed for the establishment of a strong correlation between stiffening and the severity of respiratory status (mean ET 0.82 ± 0.08 seconds for healthy subjects, 1.6 ± 1.0 seconds for ACPE groups, 10.5 ± 6.1 seconds for mild ARDS, and 20.0 ± 8.1 seconds for moderate to severe ARDS; p < 0.05). Stiffening correlated with the cytokines interleukin IL-1β, IL-8, tumor necrosis factor TNF-α, and IL-10 but not with interferon-γ, transforming growth factor-β, IL-6, or IL-17. Strong stiffening was induced by IL-1β, IL-8, and TNF-α but not by IL-10, and incubations with sera and blocking antibodies against IL-1β, IL-8, or TNF-α significantly diminished the stiffening effect of serum. In contrast, the measurements of integrin expression (CD11b, CD11a, CD18, CD49d) and leukocyte–endothelium adhesion showed a weak and slow response after incubation with the sera of patients with ARDS (several hours), suggesting a lesser role of leukocyte adhesiveness compared with leukocyte stiffness in early ARDS. Conclusions The leukocyte stiffening induced by cytokines in the sera of patients might play a role in the sequestration of leukocytes in the lung capillary beds during early ARDS. The inhibition of leukocyte stiffening with blocking antibodies might inspire future therapeutic strategies. Electronic supplementary material The online version of this article (doi:10.1186/s13054-015-1157-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Pascal Preira
- Adhésion et Inflammation, Université Aix-Marseille, INSERM U1067, CNRS UMR7333, 163 avenue de Luminy, Marseille, 13009, France. .,Laboratoire d'Immunologie, Assistance Publique - Hôpitaux de Marseille, 147, boulevard Baille, F-13285 Cedx 05, Marseille, France.
| | - Jean-Marie Forel
- Assistance Publique - Hôpitaux de Marseille, Hôpital Nord, Réanimation des Détresses Respiratoires et des Infections Sévères, 13015, Marseille, France. .,Aix-Marseille Université, Faculté de médecine, URMITE UMR CNRS 7278, 13005, Marseille, France.
| | - Philippe Robert
- Adhésion et Inflammation, Université Aix-Marseille, INSERM U1067, CNRS UMR7333, 163 avenue de Luminy, Marseille, 13009, France. .,Laboratoire d'Immunologie, Assistance Publique - Hôpitaux de Marseille, 147, boulevard Baille, F-13285 Cedx 05, Marseille, France.
| | - Paulin Nègre
- Adhésion et Inflammation, Université Aix-Marseille, INSERM U1067, CNRS UMR7333, 163 avenue de Luminy, Marseille, 13009, France.,Laboratoire d'Immunologie, Assistance Publique - Hôpitaux de Marseille, 147, boulevard Baille, F-13285 Cedx 05, Marseille, France
| | - Martine Biarnes-Pelicot
- Adhésion et Inflammation, Université Aix-Marseille, INSERM U1067, CNRS UMR7333, 163 avenue de Luminy, Marseille, 13009, France.,Laboratoire d'Immunologie, Assistance Publique - Hôpitaux de Marseille, 147, boulevard Baille, F-13285 Cedx 05, Marseille, France
| | - Francois Xeridat
- Assistance Publique - Hôpitaux de Marseille, Hôpital Nord, Réanimation des Détresses Respiratoires et des Infections Sévères, 13015, Marseille, France. .,Aix-Marseille Université, Faculté de médecine, URMITE UMR CNRS 7278, 13005, Marseille, France.
| | - Pierre Bongrand
- Adhésion et Inflammation, Université Aix-Marseille, INSERM U1067, CNRS UMR7333, 163 avenue de Luminy, Marseille, 13009, France. .,Laboratoire d'Immunologie, Assistance Publique - Hôpitaux de Marseille, 147, boulevard Baille, F-13285 Cedx 05, Marseille, France.
| | - Laurent Papazian
- Assistance Publique - Hôpitaux de Marseille, Hôpital Nord, Réanimation des Détresses Respiratoires et des Infections Sévères, 13015, Marseille, France. .,Aix-Marseille Université, Faculté de médecine, URMITE UMR CNRS 7278, 13005, Marseille, France.
| | - Olivier Theodoly
- Adhésion et Inflammation, Université Aix-Marseille, INSERM U1067, CNRS UMR7333, 163 avenue de Luminy, Marseille, 13009, France. .,Laboratoire d'Immunologie, Assistance Publique - Hôpitaux de Marseille, 147, boulevard Baille, F-13285 Cedx 05, Marseille, France.
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Park K, Mehrnezhad A, Corbin EA, Bashir R. Optomechanical measurement of the stiffness of single adherent cells. LAB ON A CHIP 2015; 15:3460-4. [PMID: 26220705 PMCID: PMC5841955 DOI: 10.1039/c5lc00444f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Recent advances in mechanobiology have accumulated strong evidence showing close correlations between the physiological conditions and mechanical properties of cells. In this paper, a novel optomechanical technique to characterize the stiffness of single adherent cells attached on a substrate is reported. The oscillation in a cell's height on a vertically vibrating reflective substrate is measured with a laser Doppler vibrometer as apparent changes in the phase of the measured velocity. This apparent phase shift and the height oscillation are shown to be affected by the mechanical properties of human colorectal adenocarcinoma cells (HT-29). The reported optomechanical technique can provide high-throughput stiffness measurement of single adherent cells over time with minimal perturbation.
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Affiliation(s)
- Kidong Park
- Division of Electrical and Computer Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.
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Oxidative Stress and Lung Ischemia-Reperfusion Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:590987. [PMID: 26161240 PMCID: PMC4487720 DOI: 10.1155/2015/590987] [Citation(s) in RCA: 174] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 01/19/2015] [Accepted: 01/20/2015] [Indexed: 01/04/2023]
Abstract
Ischemia-reperfusion (IR) injury is directly related to the formation of reactive oxygen species (ROS), endothelial cell injury, increased vascular permeability, and the activation of neutrophils and platelets, cytokines, and the complement system. Several studies have confirmed the destructiveness of the toxic oxygen metabolites produced and their role in the pathophysiology of different processes, such as oxygen poisoning, inflammation, and ischemic injury. Due to the different degrees of tissue damage resulting from the process of ischemia and subsequent reperfusion, several studies in animal models have focused on the prevention of IR injury and methods of lung protection. Lung IR injury has clinical relevance in the setting of lung transplantation and cardiopulmonary bypass, for which the consequences of IR injury may be devastating in critically ill patients.
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Abstract
The unique characteristics of pulmonary circulation and alveolar-epithelial capillary-endothelial barrier allow for maintenance of the air-filled, fluid-free status of the alveoli essential for facilitating gas exchange, maintaining alveolar stability, and defending the lung against inhaled pathogens. The hallmark of pathophysiology in acute respiratory distress syndrome is the loss of the alveolar capillary permeability barrier and the presence of protein-rich edema fluid in the alveoli. This alteration in permeability and accumulation of fluid in the alveoli accompanies damage to the lung epithelium and vascular endothelium along with dysregulated inflammation and inappropriate activity of leukocytes and platelets. In addition, there is uncontrolled activation of coagulation along with suppression of fibrinolysis and loss of surfactant. These pathophysiological changes result in the clinical manifestations of acute respiratory distress syndrome, which include hypoxemia, radiographic opacities, decreased functional residual capacity, increased physiologic deadspace, and decreased lung compliance. Resolution of acute respiratory distress syndrome involves the migration of cells to the site of injury and re-establishment of the epithelium and endothelium with or without the development of fibrosis. Most of the data related to acute respiratory distress syndrome, however, originate from studies in adults or in mature animals with very few studies performed in children or juvenile animals. The lack of studies in children is particularly problematic because the lungs and immune system are still developing during childhood and consequently the pathophysiology of pediatric acute respiratory distress syndrome may differ in significant ways from that seen in acute respiratory distress syndrome in adults. This article describes what is known of the pathophysiologic processes of pediatric acute respiratory distress syndrome as we know it today while also presenting the much greater body of evidence on these processes as elucidated by adult and animal studies. It is also our expressed intent to generate enthusiasm for larger and more in-depth investigations of the mechanisms of disease and repair specific to children in the years to come.
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Neutrophils in asthma--a review. Respir Physiol Neurobiol 2014; 209:13-6. [PMID: 25511380 DOI: 10.1016/j.resp.2014.12.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 12/03/2014] [Accepted: 12/04/2014] [Indexed: 12/28/2022]
Abstract
Asthma is a chronic inflammatory disease, with an array of cells involved in the pathogenesis of the disease. The role of neutrophils in the development of bronchial asthma is found to be complex, as they may trigger activation of immunocompetent cells and are a potent source of free oxygen radicals and enzymes participating in airway remodeling. The review highlights the role of neutrophils in bronchial asthma.
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Zhao Y, Zhang CW, Zhou WJ, Chen J, Luo NF, Gong LN, Du L, Zhou J. Is there a role of TNFR1 in acute lung injury cases associated with extracorporeal circulation? J Zhejiang Univ Sci B 2014; 15:281-8. [PMID: 24599692 DOI: 10.1631/jzus.b1300147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The signaling pathway for tumor necrosis factor-α (TNF-α) and its receptors is up-regulated during extracorporeal circulation (ECC), and recruits blood neutrophil into the lung tissue, which results in acute lung injury (ALI). In this study, we evaluated the role of tumor necrosis factor receptor 1 (TNFR1) in ECC-induced ALI by blocking TNF-α binding to TNFR1 with CAY10500. Anesthetized Sprague-Dawley (SD) rats were pretreated intravenously with phosphate buffered saline (PBS) or vehicle (0.3 ml ethanol IV) or CAY10500, and then underwent ECC for 2 h. The oxygenation index (OI) and pulmonary inflammation were assessed after ECC. OI was significantly decreased, while TNF-α and neutrophil in bronchoalveolar lavage fluid (BALF) and plasma TNF-α increased after ECC. Pretreatment of CAY10500 decreased plasma TNF-α level, but did not decrease TNF-α levels and neutrophil counts in BALF or improve OI. Lung histopathology showed significant alveolar congestion, infiltration of the leukocytes in the airspace, and increased thickness of the alveolar wall in all ECC-treated groups. CAY10500 pretreatment slightly reduced leukocyte infiltration in lungs, but did not change the wet/dry ratio in the lung tissue. Blocking TNF-α binding to TNFR1 by CAY10500 intravenously slightly mitigates pulmonary inflammation, but cannot improve the pulmonary function, indicating the limited role of TNFR1 pathway in circulating inflammatory cell in ECC-induced ALI.
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Affiliation(s)
- Yu Zhao
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, China; Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu 610041, China
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Lee H, Yu SR, Lim D, Lee H, Jin EY, Jang YP, Kim J. Galla Chinensis Attenuates Cigarette Smoke-associated Lung Injury by Inhibiting Recruitment of Inflammatory Cells into the Lung. Basic Clin Pharmacol Toxicol 2014; 116:222-8. [DOI: 10.1111/bcpt.12308] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 08/05/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Hyojung Lee
- Department of Oriental Physiology; College of Pharmacy; Kyung Hee University; Seoul Korea
| | - Seung-Ryeol Yu
- Department of Oriental Physiology; College of Pharmacy; Kyung Hee University; Seoul Korea
| | - Dahae Lim
- Department of Oriental Physiology; College of Pharmacy; Kyung Hee University; Seoul Korea
| | - Hyejung Lee
- Acupuncture and Meridian Science Research Center; KyungHee University; Seoul Korea
| | - Eun-Young Jin
- Department of Life and Nanopharmaceutical Sciences; College of Pharmacy; Kyung Hee University; Seoul Korea
| | - Young-Pyo Jang
- Department of Life and Nanopharmaceutical Sciences; College of Pharmacy; Kyung Hee University; Seoul Korea
| | - Jinju Kim
- Department of Oriental Physiology; College of Pharmacy; Kyung Hee University; Seoul Korea
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Sivelestat prevents cytoskeletal rearrangements in neutrophils resulting from lung re-expansion following one-lung ventilation during thoracic surgery. Inflammation 2014; 36:1479-84. [PMID: 23872720 DOI: 10.1007/s10753-013-9689-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Patients undergoing lobectomy are at risk of developing acute lung injury resulting from one-lung ventilation (OLV) during surgery. We investigated the morphological and functional behavior of neutrophils in patients who underwent lobectomy and assessed the ability of sivelestat to inhibit neutrophil activity. This was a blinded randomized study. Sixteen patients who underwent lobectomy were given intravenous sivelestat (n = 8) or intravenous saline (n = 8). We studied the cytoskeletal rearrangements of circulating neutrophils by determining the localization of filamentous actin (F-actin). Pulmonary oxygenation was evaluated by measuring the partial pressure of arterial oxygen. We found that the number of circulating, F-actin-rimmed neutrophils increased during OLV and after lung re-expansion. Our results suggest that, in addition to the surgical procedure and OLV, re-expansion of the remaining lung after lobectomy increases the neutrophil activation levels. Furthermore, administration of sivelestat limited neutrophil activation and improved pulmonary oxygenation in our patients.
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The Multifaceted Roles Neutrophils Play in the Tumor Microenvironment. CANCER MICROENVIRONMENT 2014; 8:125-58. [PMID: 24895166 DOI: 10.1007/s12307-014-0147-5] [Citation(s) in RCA: 283] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Accepted: 05/19/2014] [Indexed: 02/06/2023]
Abstract
Neutrophils are myeloid cells that constitute 50-70 % of all white blood cells in the human circulation. Traditionally, neutrophils are viewed as the first line of defense against infections and as a major component of the inflammatory process. In addition, accumulating evidence suggest that neutrophils may also play a key role in multiple aspects of cancer biology. The possible involvement of neutrophils in cancer prevention and promotion was already suggested more than half a century ago, however, despite being the major component of the immune system, their contribution has often been overshadowed by other immune components such as lymphocytes and macrophages. Neutrophils seem to have conflicting functions in cancer and can be classified into anti-tumor (N1) and pro-tumor (N2) sub-populations. The aim of this review is to discuss the varying nature of neutrophil function in the cancer microenvironment with a specific emphasis on the mechanisms that regulate neutrophil mobilization, recruitment and activation.
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Lewis SM, Khan N, Beale R, Treacher DF, Brown KA. Depletion of blood neutrophils from patients with sepsis: treatment for the future? Int Immunopharmacol 2013; 17:1226-32. [PMID: 24144812 DOI: 10.1016/j.intimp.2013.10.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Organ failure arising from severe sepsis accounts for nearly 6 million deaths worldwide per annum. At present there are no specific pharmacological agents available for its treatment and identifying a suitable therapeutic target is urgently needed. Neutrophils appear to be contributing directly to pulmonary damage in severe forms of lung injury and indirectly to the failure of other organs. Blood neutrophils from patients with sepsis possess a phenotype that is indicative of activation and our results show that neutrophils isolated from patients with sepsis exhibit a supranormal adherence to endothelial monolayers treated with pro-inflammatory cytokines. Additional studies reveal that the patients' cells are highly efficient at releasing IL-8. We also demonstrate that organ function is improved upon removing neutrophils from the circulation. In this article we propose that in severe sepsis there is a subpopulation of neutrophils which is actively engaged in pathological insult. The phenotypic characterisation of this subset may provide a novel therapeutic strategy for sepsis that could lead to patient benefit.
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Affiliation(s)
- Sion M Lewis
- Intensive Care Unit, Guy's and St. Thomas' NHS Foundation Trust, London, UK; Vascular Immunology, King's College London, UK
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Jung KH, Haam KK, Park S, Kim Y, Lee SR, Lee G, Kim M, Hong M, Shin M, Jung S, Bae H. The standardized herbal formula, PM014, ameliorated cigarette smoke-induced lung inflammation in a murine model of chronic obstructive pulmonary disease. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:219. [PMID: 24010767 PMCID: PMC3847199 DOI: 10.1186/1472-6882-13-219] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 08/29/2013] [Indexed: 01/10/2023]
Abstract
BACKGROUND In this study, we evaluated the anti-inflammatory effect of PM014 on cigarette smoke induced lung disease in the murine animal model of chronic obstructive pulmonary disease (COPD). METHODS Mice were exposed to cigarette smoke (CS) for 2 weeks to induce COPD-like lung inflammation. Two hours prior to cigarette smoke exposure, the treatment group was administered PM014 via an oral injection. To investigate the effects of PM014, we assessed PM014 functions in vivo, including immune cell infiltration, cytokine profiles in bronchoalveolar lavage (BAL) fluid and histopathological changes in the lung. The efficacy of PM014 was compared with that of the recently developed anti-COPD drug, roflumilast. RESULTS PM014 substantially inhibited immune cell infiltration (neutrophils, macrophages, and lymphocytes) into the airway. In addition, IL-6, TNF-α and MCP-1 were decreased in the BAL fluid of PM014-treated mice compared to cigarette smoke stimulated mice. These changes were more prominent than roflumilast treated mice. The expression of PAS-positive cells in the bronchial layer was also significantly reduced in both PM014 and roflumilast treated mice. CONCLUSIONS These data suggest that PM014 exerts strong therapeutic effects against CS induced, COPD-like lung inflammation. Therefore, this herbal medicine may represent a novel therapeutic agent for lung inflammation in general, as well as a specific agent for COPD treatment.
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Affiliation(s)
- Kyung-Hwa Jung
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoonku, Seoul 130-701, Republic of Korea
| | - Kyoung-Keun Haam
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoonku, Seoul 130-701, Republic of Korea
| | - Soojin Park
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoonku, Seoul 130-701, Republic of Korea
| | - Youngeun Kim
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoonku, Seoul 130-701, Republic of Korea
| | - Seung Ryel Lee
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoonku, Seoul 130-701, Republic of Korea
| | - Geunhyeog Lee
- Central Research Institute, Hanlim Pharm. Co. Ltd., 1007 Yoobang Dong, Yongin, Kyounggi Do, Republic of Korea
| | - Miran Kim
- Central Research Institute, Hanlim Pharm. Co. Ltd., 1007 Yoobang Dong, Yongin, Kyounggi Do, Republic of Korea
| | - Moochang Hong
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoonku, Seoul 130-701, Republic of Korea
| | - Minkyu Shin
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoonku, Seoul 130-701, Republic of Korea
| | - Sungki Jung
- Division of Allergy and Respiratory System, Department of Internal Medicine, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoonku, Seoul 130-701, Republic of Korea
| | - Hyunsu Bae
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoekidong, Dongdaemoonku, Seoul 130-701, Republic of Korea
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Serum amyloid P inhibits granulocyte adhesion. FIBROGENESIS & TISSUE REPAIR 2013; 6:2. [PMID: 23324174 PMCID: PMC3627900 DOI: 10.1186/1755-1536-6-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 12/07/2012] [Indexed: 12/28/2022]
Abstract
Background The extravasation of granulocytes (such as neutrophils) at a site of inflammation is a key aspect of the innate immune system. Signals from the site of inflammation upregulate granulocyte adhesion to the endothelium to initiate extravasation, and also enhance granulocyte adhesion to extracellular matrix proteins to facilitate granulocyte movement through the inflamed tissue. During the resolution of inflammation, other signals inhibit granulocyte adhesion to slow and ultimately stop granulocyte influx into the tissue. In a variety of inflammatory diseases such as acute respiratory distress syndrome, an excess infiltration of granulocytes into a tissue causes undesired collateral damage, and being able to reduce granulocyte adhesion and influx could reduce this damage. Results We found that serum amyloid P (SAP), a constitutive protein component of the blood, inhibits granulocyte spreading and granulocyte adhesion to extracellular matrix components. This indicates that in addition to granulocyte adhesion inhibitors that are secreted during the resolution of inflammation, a granulocyte adhesion inhibitor is present at all times in the blood. Although SAP affects adhesion, it does not affect the granulocyte adhesion molecules CD11b, CD62L, CD18, or CD44. SAP also has no effect on the production of hydrogen peroxide by resting or stimulated granulocytes, or N-formyl-methionine-leucine-phenylalanine (fMLP)-induced granulocyte migration. In mice treated with intratracheal bleomycin to induce granulocyte accumulation in the lungs, SAP injections reduced the number of granulocytes in the lungs. Conclusions We found that SAP, a constitutive component of blood, is a granulocyte adhesion inhibitor. We hypothesize that SAP allows granulocytes to sense whether they are in the blood or in a tissue.
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Preira P, Grandné V, Forel JM, Gabriele S, Camara M, Theodoly O. Passive circulating cell sorting by deformability using a microfluidic gradual filter. LAB ON A CHIP 2013; 13:161-70. [PMID: 23147069 DOI: 10.1039/c2lc40847c] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The deformability of circulating leukocytes plays an important role in the physiopathology of several diseases like sepsis or acute respiratory distress syndrome (ARDS). We present here a microfluidic method for the passive testing, sorting and separating of non-adherent cell populations by deformability. It consists of microfluidic sieves in series with pore sizes decreasing from the upstream to the downstream. The method capabilities are demonstrated with monocytic cell lines (THP-1) treated by Jasplakinolide (a stabilizer of polymerized actin), LatrunculinA (an inhibitor of actin polymerization), and with the plasma of patients suffering from ARDS. Simple sample injection with standard syringes and pumps makes the method readily adapted for experimentation in hospitals.
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Affiliation(s)
- P Preira
- Adhésion & Inflammation, INSERM U1067-CNRS UMR7333, and Université Aix-Marseille, Assistance Publique-Hôpitaux de Marseille, Case 937, 163 Avenue de Luminy, F-13009 Marseille, France
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Blidberg K, Palmberg L, Dahlén B, Lantz AS, Larsson K. Increased neutrophil migration in smokers with or without chronic obstructive pulmonary disease. Respirology 2013; 17:854-60. [PMID: 22509802 DOI: 10.1111/j.1440-1843.2012.02181.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND AND OBJECTIVE The number of airway neutrophils is increased in chronic obstructive pulmonary disease (COPD), and this may have a central pathophysiological role in the disease. In addition, activation of neutrophils increases their migration into sites of injury. We hypothesize that circulating neutrophils are activated in smokers. METHODS Peripheral blood neutrophils were isolated from healthy non-smokers (n = 15), and smokers with (n = 15) or without COPD (n = 15), who were matched with regard to cumulative tobacco exposure, and chemotactic responses to N-formyl-methionyl-leucyl-phenylalanine (fMLP), interleukin-8 (IL-8, CXCL8) and leukotriene B(4) (LTB(4)) were assessed using the ChemoTx System (Neuro Probe Inc., Gaithersburg, MD, USA). Serum tumour necrosis factor-α (TNF-α) concentrations were measured by ELISA. Surface expression of the neutrophil activation marker, CD11b, was measured by flow cytometry. RESULTS The chemotactic response to CXCL8 was increased in smokers with or without COPD (P < 0.05). Migration towards LTB(4) was increased in smokers without COPD compared with non-smokers (P < 0.05), whereas there was no difference in fMLP-induced chemotaxis between the groups. There was a correlation between serum TNF-α levels and migration induced by IL-8 (Rho = 0.442; P = 0.038) and LTB(4) (Rho = 0.428; P = 0.044) in the smokers. Furthermore, there was a tendency towards higher CD11b expression in the COPD group (P = 0.057). CONCLUSIONS Chemotaxis of circulating neutrophils towards CXCL8, and partly towards LTB(4), is increased in smokers, indicating a systemic influence of smoking on cell activation, irrespective of the presence of airflow limitation. The relationship between TNF-α and chemotactic response suggests that TNF-α is involved in neutrophil activation, resulting in enhanced migration.
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Affiliation(s)
- Kristin Blidberg
- Lung and Allergy Research, The National Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
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Rossaint J, Zarbock A. Tissue-specific neutrophil recruitment into the lung, liver, and kidney. J Innate Immun 2012; 5:348-57. [PMID: 23257511 DOI: 10.1159/000345943] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Accepted: 11/20/2012] [Indexed: 12/26/2022] Open
Abstract
The recruitment of immune cells is crucial for the development of inflammatory processes. The classical recruitment cascade of neutrophils into inflamed tissues is well understood and consists of capturing, rolling, slow rolling, arrest, postadhesion strengthening, crawling, and transmigration. While this commonly agreed paradigm might be applicable to most peripheral tissues, recruitment mechanisms may substantially vary in different organs such as the lung, liver, and kidney. These organs are highly specialized tissues with unique cell populations and structural organization, which enables them to fulfill their individual functions. The published research over the last decade has shed some light on organ-specific mechanisms of neutrophil recruitment and helped to generate a deeper understanding of the specific recruitment mechanisms involved in this process. The aim of this review is to highlight current concepts of tissue-specific differences and similarities of neutrophil recruitment into the lung, liver, and kidney.
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Affiliation(s)
- Jan Rossaint
- Max Planck Institute for Molecular Biomedicine, and Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Münster, Germany
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Ciepiela O, Zawadzka-Krajewska A, Kotula I, Pyrzak B, Demkow U. Influence of sublingual immunotherapy on the expression of Mac-1 integrin in neutrophils from asthmatic children. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 756:73-80. [PMID: 22836621 DOI: 10.1007/978-94-007-4549-0_10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Asthma can be effectively treated with sublingual immunotherapy. The influence of -sublingual immunotherapy on the function of granulocytes in asthmatic patients is largely unknown. Mac-1 integrin is a transmembrane protein containing α (CD11b) and β (CD18) chains. High expression of the complex is found on the surface of neutrophils, NK cells, and macrophages. CD11b/CD18 may bind to CD23, ICAM-1, ICAM-2, and ICAM-4. It plays a crucial role in diapedesis of neutrophils. The aim of the present study was to assess Mac-1 expression on neutrophils from asthmatic children before and after sublingual immunotherapy. Twenty five children aged of 8.1 ± 3.1 suffering from atopic asthma and allergic rhinitis, shortlisted for specific immunotherapy, served as the study group. Fifteen healthy individuals, aged 9.8 ± 3.4, served as a control group. The assessment of CD11b and CD18 expression on cells from peripheral blood was performed with a flow cytometer. The tests were performed before and after 12 months of sublingual immunotherapy. In the asthmatic children, 98.08 (90.79-99.12)% of Mac-1 positive neutrophils were detected. The group was divided into two subgroups: of more than 98% and less than 95% of neutrophils with CD11b/CD18 expression in the sample. After immunotherapy, the percentage of Mac-1 positive granulocytes increased to 99.60 (99.29-99.68)%, p = 0.01. In the control group, 90.56 (87.08-88.86)% granulocytes were Mac-1 positive, p = 0.002. We conclude that sublingual immunotherapy strongly influences the function of the immunological system, including Mac-1 expression on neutrophils.
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Affiliation(s)
- Olga Ciepiela
- Department of Laboratory Diagnostics and Clinical Immunology of Developmental Age, Warsaw Medical University, Warsaw, Poland.
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Herbal Formula, PM014, Attenuates Lung Inflammation in a Murine Model of Chronic Obstructive Pulmonary Disease. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:769830. [PMID: 22778777 PMCID: PMC3384970 DOI: 10.1155/2012/769830] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 02/28/2012] [Indexed: 11/17/2022]
Abstract
Chronic obstructive pulmonary disease (COPD), which is characterized by airway obstruction, leads to, as the two major forms of COPD, chronic bronchitis and emphysema. This study was conducted to evaluate the effects of herbal formula, PM014, in a murine model of COPD. Balb/c mice were treated once with each herb extract in PM014 or PM014 mixture via an oral injection. Lipopolysaccharide (LPS) or elastase/LPS were administrated to the mice to induce a disease that resembles COPD. PM014 treatment significantly attenuated the increased accumulation of immune cells in bronchoalveolar lavage fluid (BALF) compared to control mice. In addition, the TNF-α and IL-6 levels in BALF were decreased in the PM014 mice. Furthermore, histological analysis demonstrated that PM014 attenuated the hazardous effects of lung inflammation. These data suggest that PM014 exerts beneficial effects against forms of COPD such as lung inflammation.
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Sahlander K, Larsson K, Palmberg L. Daily exposure to dust alters innate immunity. PLoS One 2012; 7:e31646. [PMID: 22355383 PMCID: PMC3280315 DOI: 10.1371/journal.pone.0031646] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 01/11/2012] [Indexed: 12/18/2022] Open
Abstract
Pig farmers are exposed to organic material in pig barns on a daily basis and have signs of an ongoing chronic airway inflammation and increased prevalence of chronic inflammatory airway diseases, predominantly chronic bronchitis. Interestingly, the inflammatory response to acute exposure to organic dust is attenuated in farmers. The aim of the study was to closer characterize innate immunity features in blood and airways in farmers and in naïve, non-exposed, controls. The expression of pattern recognition receptors (TLR2, TLR4 and CD14) whose ligands are abundant in pig barn dust and adhesion proteins (CD11b, CD62L and CD162L) on blood and sputum neutrophils in pig farmers and soluble TLR2 and CD14 (sTLR2 and sCD14) in blood and sputum were assessed in pig farmers and previously unexposed controls. The release of pro-inflammatory cytokines from blood cells stimulated with LPS ex vivo was measured in the absence and presence of anti-ST2. We also examined, in a separate study population, serum levels of soluble ST2 (sST2), before and after exposure in a pig barn and a bronchial LPS challenge. Farmers had signs of ongoing chronic inflammation with increased number of blood monocytes, and decreased expression of CD62L and CD162 on blood neutrophils. Farmers also had lower levels of sTLR2 and sCD14 in sputum and reduced expression of CD14 on sputum neutrophils than controls. Exposure to organic dust and LPS induced increase of serum sST2 in controls but not in farmers. In conclusion, farmers have signs of local and systemic inflammation associated with altered innate immunity characteristics.
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Affiliation(s)
- Karin Sahlander
- Lung and Allergy Research, National Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- * E-mail:
| | - Kjell Larsson
- Lung and Allergy Research, National Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Lena Palmberg
- Lung and Allergy Research, National Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
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Montecucco F, Di Marzo V, da Silva RF, Vuilleumier N, Capettini L, Lenglet S, Pagano S, Piscitelli F, Quintao S, Bertolotto M, Pelli G, Galan K, Pilet L, Kuzmanovic K, Burger F, Pane B, Spinella G, Braunersreuther V, Gayet-Ageron A, Pende A, Viviani GL, Palombo D, Dallegri F, Roux-Lombard P, Santos RAS, Stergiopulos N, Steffens S, Mach F. The activation of the cannabinoid receptor type 2 reduces neutrophilic protease-mediated vulnerability in atherosclerotic plaques. Eur Heart J 2011; 33:846-56. [PMID: 22112961 DOI: 10.1093/eurheartj/ehr449] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
AIMS The activation of cannabinoid receptor type 2 (CB(2))-mediated pathways might represent a promising anti-atherosclerotic treatment. Here, we investigated the expression of the endocannabinoid system in human carotid plaques and the impact of CB(2) pharmacological activation on markers of plaque vulnerability in vivo and in vitro. METHODS AND RESULTS The study was conducted using all available residual human carotid tissues (upstream and downstream the blood flow) from our cohort of patients symptomatic (n = 13) or asymptomatic (n = 27) for ischaemic stroke. Intraplaque levels of 2-arachidonoylglycerol, anandamide N-arachidonoylethanolamine, N-palmitoylethanolamine, N-oleoylethanolamine, and their degrading enzymes (fatty acid amide hydrolase and monoacylglycerol lipase) were not different in human plaque portions. In the majority of human samples, CB(1) (both mRNA and protein levels) was undetectable. In downstream symptomatic plaques, CB(2) protein expression was reduced when compared with asymptomatic patients. In these portions, CB(2) levels were inversely correlated (r = -0.4008, P = 0.0170) with matrix metalloprotease (MMP)-9 content and positively (r = 0.3997, P = 0.0174) with collagen. In mouse plaques, CB(2) co-localized with neutrophils and MMP-9. Treatment with the selective CB(2) agonist JWH-133 was associated with the reduction in MMP-9 content in aortic root and carotid plaques. In vitro, pre-incubation with JWH-133 reduced tumour necrosis factor (TNF)-α-mediated release of MMP-9. This effect was associated with the reduction in TNF-α-induced ERK1/2 phosphorylation in human neutrophils. CONCLUSION Cannabinoid receptor type 2 receptor is down-regulated in unstable human carotid plaques. Since CB(2) activation prevents neutrophil release of MMP-9 in vivo and in vitro, this treatment strategy might selectively reduce carotid vulnerability in humans.
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Affiliation(s)
- Fabrizio Montecucco
- Division of Cardiology, Faculty of Medicine, Foundation for Medical Researches, Geneva University Hospitals, avenue de la Roseraie 64, 1211 Geneva 4, Switzerland.
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Lee H, Lee D, Kim Y, Lee G, Kim SJ, Jung S, Jung H, Bae H. Lipopolysaccharide induced lung inflammation is inhibited by Lonicera japonica. Mol Cell Toxicol 2011. [DOI: 10.1007/s13273-011-0012-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Floreth T, Stern E, Tu Y, Stern R, Garrity ER, Bhorade SM, White SR. Differentiated transplant derived airway epithelial cell cytokine secretion is not regulated by cyclosporine. Respir Res 2011; 12:44. [PMID: 21477368 PMCID: PMC3079624 DOI: 10.1186/1465-9921-12-44] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Accepted: 04/10/2011] [Indexed: 11/25/2022] Open
Abstract
Background While lung transplantation is an increasingly utilized therapy for advanced lung diseases, chronic rejection in the form of Bronchiolitis Obliterans Syndrome (BOS) continues to result in significant allograft dysfunction and patient mortality. Despite correlation of clinical events with eventual development of BOS, the causative pathophysiology remains unknown. Airway epithelial cells within the region of inflammation and fibrosis associated with BOS may have a participatory role. Methods Transplant derived airway epithelial cells differentiated in air liquid interface culture were treated with IL-1β and/or cyclosporine, after which secretion of cytokines and growth factor and gene expression for markers of epithelial to mesenchymal transition were analyzed. Results Secretion of IL-6, IL-8, and TNF-α, but not TGF-β1, was increased by IL-1β stimulation. In contrast to previous studies using epithelial cells grown in submersion culture, treatment of differentiated cells in ALI culture with cyclosporine did not elicit cytokine or growth factor secretion, and did not alter IL-6, IL-8, or TNF-α production in response to IL-1β treatment. Neither IL-1β nor cyclosporine elicited expression of markers of the epithelial to mesenchymal transition E-cadherin, EDN-fibronectin, and α-smooth muscle actin. Conclusion Transplant derived differentiated airway epithelial cell IL-6, IL-8, and TNF-α secretion is not regulated by cyclosporine in vitro; these cells thus may participate in local inflammatory responses in the setting of immunosuppression. Further, treatment with IL-1β did not elicit gene expression of markers of epithelial to mesenchymal transition. These data present a model of differentiated airway epithelial cells that may be useful in understanding epithelial participation in airway inflammation and allograft rejection in lung transplantation.
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Affiliation(s)
- Timothy Floreth
- Section of Pulmonary and Critical Care Medicine, The University of Chicago, Chicago, IL 60637, USA
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Hur SC, Henderson-MacLennan NK, McCabe ERB, Di Carlo D. Deformability-based cell classification and enrichment using inertial microfluidics. LAB ON A CHIP 2011; 11:912-20. [PMID: 21271000 DOI: 10.1039/c0lc00595a] [Citation(s) in RCA: 335] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The ability to detect and isolate rare target cells from heterogeneous samples is in high demand in cell biology research, immunology, tissue engineering and medicine. Techniques allowing label-free cell enrichment or detection are especially important to reduce the complexity and costs towards clinical applications. Single-cell deformability has recently been recognized as a unique label-free biomarker for cell phenotype with implications for assessment of cancer invasiveness. Using a unique combination of fluid dynamic effects in a microfluidic system, we demonstrate high-throughput continuous label-free cell classification and enrichment based on cell size and deformability. The system takes advantage of a balance between deformability-induced and inertial lift forces as cells travel in a microchannel flow. Particles and droplets with varied elasticity and viscosity were found to have separate lateral dynamic equilibrium positions due to this balance of forces. We applied this system to successfully classify various cell types using cell size and deformability as distinguishing markers. Furthermore, using differences in dynamic equilibrium positions, we adapted the system to conduct passive, label-free and continuous cell enrichment based on these markers, enabling off-chip sample collection without significant gene expression changes. The presented method has practical potential for high-throughput deformability measurements and cost-effective cell separation to obtain viable target cells of interest in cancer research, immunology, and regenerative medicine.
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Affiliation(s)
- Soojung Claire Hur
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
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Vacca G, Randerath WJ, Gillissen A. Inhibition of granulocyte migration by tiotropium bromide. Respir Res 2011; 12:24. [PMID: 21352583 PMCID: PMC3051905 DOI: 10.1186/1465-9921-12-24] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2009] [Accepted: 02/27/2011] [Indexed: 11/10/2022] Open
Abstract
STUDY OBJECTIVES Neutrophil influx into the airways is an important mechanism in the pathophysiology of the inflammatory process in the airways of patients with chronic obstructive pulmonary disease (COPD). Previously it was shown that anticholinergic drugs reduce the release of non-neuronal paracrine mediators, which modulate inflammation in the airways. On this basis, we investigated the ability of the long-acting anticholinergic tiotropium bromide to inhibit a) alveolar macrophage (AM)-mediated chemotaxis of neutrophils, and b) cellular release of reactive oxygen species (ROS). METHOD AM and neutrophils were collected from 71 COPD patients. Nanomolar concentrations of tiotropium bromide were tested in AM cultured up to 20 h with LPS (1 μg/ml). AM supernatant was tested for TNFα, IL8, IL6, LTB4, GM-CSF, MIPα/β and ROS. It was further used in a 96-well chemotaxis chamber to stimulate the migration of fluorescence labelled neutrophils. Control stimulants consisted of acetylcholine (ACh), carbachol, muscarine or oxotremorine and in part PMA (phorbol myristate acetate, 0.1 μg/ml). Potential contribution of M1-3-receptors was ascertained by a) analysis of mRNA transcription by RT-PCR, and b) co-incubation with selective M-receptor inhibitors. RESULTS Supernatant from AM stimulated with LPS induced neutrophilic migration which could be reduced by tiotropium in a dose dependent manner: 22.1 ± 10.2 (3 nM), 26.5 ± 18,4 (30 nM), and 37.8 ± 24.0 (300 nM, p < 0.001 compared to non-LPS activated AM). Concomitantly TNFα release of stimulated AM dropped by 19.2 ± 7.2% of control (p = 0.001). Tiotropium bromide did not affect cellular IL8, IL6, LTB4, GM-CSF and MIPα/β release in this setting. Tiotropium (30 nM) reduced ROS release of LPS stimulated AM by 36.1 ± 15.2% (p = 0.002) and in carbachol stimulated AM by 46.2 ± 30.2 (p < 0.001). M3R gene expression dominated over M2R and M1R. Chemotaxis inhibitory effect of tiotropium bromide was mainly driven by M3R inhibition. CONCLUSION Our data confirm that inhibiting muscarinic cholinergic receptors with tiotropium bromide reduces TNFα mediated chemotactic properties and ROS release of human AM, and thus may contribute to lessen cellular inflammation.
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MESH Headings
- Anti-Inflammatory Agents/pharmacology
- Cells, Cultured
- Chemotaxis, Leukocyte/drug effects
- Cholinergic Agonists/pharmacology
- Cholinergic Antagonists/pharmacology
- Culture Media, Conditioned/metabolism
- Dose-Response Relationship, Drug
- Female
- Humans
- Inflammation Mediators/metabolism
- Macrophage Activation/drug effects
- Macrophages, Alveolar/drug effects
- Macrophages, Alveolar/immunology
- Macrophages, Alveolar/metabolism
- Male
- Neutrophils/drug effects
- Neutrophils/immunology
- Pulmonary Disease, Chronic Obstructive/drug therapy
- Pulmonary Disease, Chronic Obstructive/immunology
- Pulmonary Disease, Chronic Obstructive/metabolism
- Reactive Oxygen Species/metabolism
- Receptors, Muscarinic/drug effects
- Receptors, Muscarinic/metabolism
- Scopolamine Derivatives/pharmacology
- Tiotropium Bromide
- Tumor Necrosis Factor-alpha/metabolism
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Affiliation(s)
- Gabriela Vacca
- Robert-Koch-Hospital, St. George Medical Center, Leipzig, Germany
| | - Winfried J Randerath
- Department for Pulmonary Medicine, Allergology, Sleep Medicine and Intensive Care, Hospital Bethanien, Universitaet Witten/Herdecke, Solingen, Germany
| | - Adrian Gillissen
- Department of Pulmonary Medicine, General Hospital, Kassel, Germany
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