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Pleskova SN, Bezrukov NA, Bobyk SZ, Gorshkova EN, Novikov DV. Pathogenic Escherichia coli change the adhesion between neutrophils and endotheliocytes in the experimental bacteremia model. MICROBIAL CELL (GRAZ, AUSTRIA) 2024; 11:254-264. [PMID: 39045084 PMCID: PMC11263930 DOI: 10.15698/mic2024.07.830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 06/13/2024] [Accepted: 07/03/2024] [Indexed: 07/25/2024]
Abstract
Septicemia caused by gram-negative bacteria is characterized by high death rate due to the endotoxin release. Since the septicemia depends not only on biochemical aspects of interactions in the system bloodstream, the study of mechanical interactions is also important. Using a model of experimental septicemia caused by E. coli, a hyperproduction of integrins CD11a and CD11b by neutrophils was shown, but this did not lead to the establishment of strong adhesion contacts between endothelial cells and neutrophils. On the contrary, adhesion force and work, as assessed by FS spectroscopy, were statistically significantly reduced in the presence of bacteria. It has also been shown that exposure to the pathogenic strain E. coli 321 increases the stiffness of the membrane-cytoskeleton complex of endothelial cells and bacteria significantly change their morphology on long-term observation. At the same time, we observed the death of neutrophils by apoptosis. Thus, it was shown that besides lipopolysaccharide release there are other pathogenic factors of E. coli: decrease in the interaction between neutrophil and endothelial cell caused by an increase of the endothelial cell rigidity and apoptotic death of neutrophils probably as a result of adhesins and exotoxin effects. Obtained results should be taken in mind during the therapy of septicemia.
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Affiliation(s)
- Svetlana N Pleskova
- Research Laboratory of Scanning Probe Microscopy, Lobachevsky State University of Nizhny NovgorodNizhny NovgorodRussia
- "Nanotechnology and Biotechnology" Department, Nizhny Novgorod State Technical University named after Alekseev R.E.Nizhny NovgorodRussia
| | - Nikolay A Bezrukov
- Research Laboratory of Scanning Probe Microscopy, Lobachevsky State University of Nizhny NovgorodNizhny NovgorodRussia
| | - Sergey Z Bobyk
- Research Laboratory of Scanning Probe Microscopy, Lobachevsky State University of Nizhny NovgorodNizhny NovgorodRussia
| | - Ekaterina N Gorshkova
- Research Laboratory of Scanning Probe Microscopy, Lobachevsky State University of Nizhny NovgorodNizhny NovgorodRussia
| | - Dmitri V Novikov
- Nizhny Novgorod Research Institute of Epidemiology and microbiology named after Blokhina I.N.Nizhny NovgorodRussia
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2
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Pellico J, Vass L, Carrascal-Miniño A, Man F, Kim J, Sunassee K, Parker D, Blower PJ, Marsden PK, T M de Rosales R. In vivo real-time positron emission particle tracking (PEPT) and single particle PET. NATURE NANOTECHNOLOGY 2024; 19:668-676. [PMID: 38242986 PMCID: PMC11106003 DOI: 10.1038/s41565-023-01589-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 11/30/2023] [Indexed: 01/21/2024]
Abstract
Positron emission particle tracking (PEPT) enables 3D localization and tracking of single positron-emitting radiolabelled particles with high spatiotemporal resolution. The translation of PEPT to the biomedical imaging field has been limited due to the lack of methods to radiolabel biocompatible particles with sufficient specific activity and protocols to isolate a single particle in the sub-micrometre size range, below the threshold for capillary embolization. Here we report two key developments: the synthesis and 68Ga-radiolabelling of homogeneous silica particles of 950 nm diameter with unprecedented specific activities (2.1 ± 1.4 kBq per particle), and the isolation and manipulation of a single particle. We have combined these developments to perform in vivo PEPT and dynamic positron emission tomography (PET) imaging of a single radiolabelled sub-micrometre size particle using a pre-clinical positron emission tomography/computed tomography scanner. This work opens possibilities for quantitative assessment of haemodynamics in vivo in real time, at the whole-body level using minimal amounts of injected radioactive dose and material.
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Affiliation(s)
- Juan Pellico
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Laurence Vass
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Amaia Carrascal-Miniño
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Francis Man
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Jana Kim
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Kavitha Sunassee
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - David Parker
- School of Physics and Astronomy, University of Birmingham, Birmingham, UK
| | - Philip J Blower
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Paul K Marsden
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Rafael T M de Rosales
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.
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3
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Rizo-Téllez SA, Filep JG. Beyond host defense and tissue injury: the emerging role of neutrophils in tissue repair. Am J Physiol Cell Physiol 2024; 326:C661-C683. [PMID: 38189129 PMCID: PMC11193466 DOI: 10.1152/ajpcell.00652.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/31/2023] [Accepted: 12/31/2023] [Indexed: 01/09/2024]
Abstract
Neutrophils, the most abundant immune cells in human blood, play a fundamental role in host defense against invading pathogens and tissue injury. Neutrophils carry potentially lethal weaponry to the affected site. Inadvertent and perpetual neutrophil activation could lead to nonresolving inflammation and tissue damage, a unifying mechanism of many common diseases. The prevailing view emphasizes the dichotomy of their function, host defense versus tissue damage. However, tissue injury may also persist during neutropenia, which is associated with disease severity and poor outcome. Numerous studies highlight neutrophil phenotypic heterogeneity and functional versatility, indicating that neutrophils play more complex roles than previously thought. Emerging evidence indicates that neutrophils actively orchestrate resolution of inflammation and tissue repair and facilitate return to homeostasis. Thus, neutrophils mobilize multiple mechanisms to limit the inflammatory reaction, assure debris removal, matrix remodeling, cytokine scavenging, macrophage reprogramming, and angiogenesis. In this review, we will summarize the homeostatic and tissue-reparative functions and mechanisms of neutrophils across organs. We will also discuss how the healing power of neutrophils might be harnessed to develop novel resolution and repair-promoting therapies while maintaining their defense functions.
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Affiliation(s)
- Salma A Rizo-Téllez
- Department of Pathology and Cell Biology, University of Montreal and Research Center, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
| | - János G Filep
- Department of Pathology and Cell Biology, University of Montreal and Research Center, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
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Ahmadi A, Ahrari S, Salimian J, Salehi Z, Karimi M, Emamvirdizadeh A, Jamalkandi SA, Ghanei M. p38 MAPK signaling in chronic obstructive pulmonary disease pathogenesis and inhibitor therapeutics. Cell Commun Signal 2023; 21:314. [PMID: 37919729 PMCID: PMC10623820 DOI: 10.1186/s12964-023-01337-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 09/27/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is characterized by persistent respiratory symptoms and airflow limitation due to airway and/or alveolar remodeling. Although the abnormalities are primarily prompted by chronic exposure to inhaled irritants, maladjusted and self-reinforcing immune responses are significant contributors to the development and progression of the disease. The p38 isoforms are regarded as pivotal hub proteins that regulate immune and inflammatory responses in both healthy and disease states. As a result, their inhibition has been the subject of numerous recent studies exploring their therapeutic potential in COPD. MAIN BODY We performed a systematic search based on the PRISMA guidelines to find relevant studies about P38 signaling in COPD patients. We searched the PubMed and Google Scholar databases and used "P38" AND "COPD" Mesh Terms. We applied the following inclusion criteria: (1) human, animal, ex vivo and in vitro studies; (2) original research articles; (3) published in English; and (4) focused on P38 signaling in COPD pathogenesis, progression, or treatment. We screened the titles and abstracts of the retrieved studies and assessed the full texts of the eligible studies for quality and relevance. We extracted the following data from each study: authors, year, country, sample size, study design, cell type, intervention, outcome, and main findings. We classified the studies according to the role of different cells and treatments in P38 signaling in COPD. CONCLUSION While targeting p38 MAPK has demonstrated some therapeutic potential in COPD, its efficacy is limited. Nevertheless, combining p38 MAPK inhibitors with other anti-inflammatory steroids appears to be a promising treatment choice. Clinical trials testing various p38 MAPK inhibitors have produced mixed results, with some showing improvement in lung function and reduction in exacerbations in COPD patients. Despite these mixed results, research on p38 MAPK inhibitors is still a major area of study to develop new and more effective therapies for COPD. As our understanding of COPD evolves, we may gain a better understanding of how to utilize p38 MAPK inhibitors to treat this disease. Video Abstract.
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Affiliation(s)
- Ali Ahmadi
- Molecular Biology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Sajjad Ahrari
- Department of Biochemistry and Molecular Medicine, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, QC, Canada
| | - Jafar Salimian
- Applied Virology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Zahra Salehi
- Hematology-Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehrdad Karimi
- Department of Traditional Medicine, School of Persian Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Emamvirdizadeh
- Department of Molecular Genetics, Faculty of Bio Sciences, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Sadegh Azimzadeh Jamalkandi
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
| | - Mostafa Ghanei
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Metzemaekers M, Malengier-Devlies B, Gouwy M, De Somer L, Cunha FDQ, Opdenakker G, Proost P. Fast and furious: The neutrophil and its armamentarium in health and disease. Med Res Rev 2023; 43:1537-1606. [PMID: 37036061 DOI: 10.1002/med.21958] [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: 02/22/2022] [Revised: 12/27/2022] [Accepted: 03/24/2023] [Indexed: 04/11/2023]
Abstract
Neutrophils are powerful effector cells leading the first wave of acute host-protective responses. These innate leukocytes are endowed with oxidative and nonoxidative defence mechanisms, and play well-established roles in fighting invading pathogens. With microbicidal weaponry largely devoid of specificity and an all-too-well recognized toxicity potential, collateral damage may occur in neutrophil-rich diseases. However, emerging evidence suggests that neutrophils are more versatile, heterogeneous, and sophisticated cells than initially thought. At the crossroads of innate and adaptive immunity, neutrophils demonstrate their multifaceted functions in infectious and noninfectious pathologies including cancer, autoinflammation, and autoimmune diseases. Here, we discuss the kinetics of neutrophils and their products of activation from bench to bedside during health and disease, and provide an overview of the versatile functions of neutrophils as key modulators of immune responses and physiological processes. We focus specifically on those activities and concepts that have been validated with primary human cells.
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Affiliation(s)
- Mieke Metzemaekers
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Bert Malengier-Devlies
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Mieke Gouwy
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Lien De Somer
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
- Division of Pediatric Rheumatology, University Hospital Leuven, Leuven, Belgium
- European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases (RITA) at the University Hospital Leuven, Leuven, Belgium
| | | | - Ghislain Opdenakker
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Paul Proost
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
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Zhu W, Zhang H, Dong Q, Song H, Zhao L. Dual wave of neutrophil recruitment determines the outcome of C. albicans infection. Front Cell Infect Microbiol 2023; 13:1239593. [PMID: 37492529 PMCID: PMC10364056 DOI: 10.3389/fcimb.2023.1239593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 06/26/2023] [Indexed: 07/27/2023] Open
Abstract
Candida albicans is a ubiquitous fungus that can cause superficial and systemic infections in humans. Neutrophils play a crucial role in controlling C. albicans infections. When C. albicans enters the bloodstream, it tends to get trapped in capillary vessels. However, the behavior of neutrophils in combating capillary-residing fungi has not been fully characterized. In this study, we used transgenic mice and whole mount imaging to investigate the growth of C. albicans and its interaction with innate immune cells in different organs. We observed that C. albicans rapidly grows hyphae within hours of infection. Following intravenous infection, we observed two waves of neutrophil recruitment, both of which significantly contributed to the elimination of the fungi. The first wave of neutrophils was induced by complement activation and could be prevented by C5aR blockade. Interestingly, we discovered that the fungicidal effect in the lungs was independent of adhesion molecules such as Mac-1, LFA-1, and ICAM-1. However, these molecules played a more significant role in the optimal killing of C. albicans in the kidney. Importantly, the initial difference in killing efficiency resulted in significantly reduced survival in knockout mice lacking these adhesion molecules. We identified a second wave of neutrophil recruitment associated with hyphal growth and tissue damage, which was independent of the aforementioned adhesion molecules. Overall, this study elucidates the dual wave of neutrophil recruitment during C. albicans infection and highlights the importance of early fungal clearance for favorable disease outcomes.
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Affiliation(s)
- Weiwei Zhu
- Department of Cardiovascular Medicine, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Huifang Zhang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Qiming Dong
- Department of Internal Medicine, Greater Baltimore Medical Center, Towson, MD, United States
| | - Hongyong Song
- Department of Cardiovascular Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Lin Zhao
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
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7
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Shim HB, Deniset JF, Kubes P. Neutrophils in homeostasis and tissue repair. Int Immunol 2022; 34:399-407. [PMID: 35752158 DOI: 10.1093/intimm/dxac029] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/25/2022] [Indexed: 11/13/2022] Open
Abstract
Neutrophils are the most abundant innate immune cell and are equipped with highly destructive molecular cargo. As such, these cells were long thought to be short-lived killer cells that unleash their full cytotoxic programs on pathogens following infection and on host bystander cells after sterile injury. However, this view of neutrophils is overly simplistic and as a result is outdated. Numerous studies now collectively highlight neutrophils as far more complex and having a host of homeostatic and tissue-reparative functions. In this review, we summarize these underappreciated roles across organs and injury models.
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Affiliation(s)
- Hanjoo Brian Shim
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Calvin, Phoebe, and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Justin F Deniset
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Calvin, Phoebe, and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada.,Department of Cardiac Sciences, University of Calgary, Calgary, Alberta, Canada.,Libin Cardiovascular Institute, University of Calgary, Calgary, Alberta, Canada
| | - Paul Kubes
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Calvin, Phoebe, and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
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