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Legrand C, Vanneste D, Hego A, Sabatel C, Mollers K, Schyns J, Maréchal P, Abinet J, Tytgat A, Liégeois M, Polese B, Meunier M, Radermecker C, Fiévez L, Bureau F, Marichal T. Lung Interstitial Macrophages Can Present Soluble Antigens and Induce Foxp3 + Regulatory T Cells. Am J Respir Cell Mol Biol 2024; 70:446-456. [PMID: 38329817 DOI: 10.1165/rcmb.2023-0254oc] [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: 07/10/2023] [Accepted: 02/08/2024] [Indexed: 02/10/2024] Open
Abstract
Lung macrophages constitute a sophisticated surveillance and defense system that contributes to tissue homeostasis and host defense and allows the host to cope with the myriad of insults and antigens to which the lung mucosa is exposed. As opposed to alveolar macrophages, lung interstitial macrophages (IMs) express high levels of Type 2 major histocompatibility complex (MHC-II), a hallmark of antigen-presenting cells. Here, we showed that lung IMs, like dendritic cells, possess the machinery to present soluble antigens in an MHC-II-restricted way. Using ex vivo ovalbumin (OVA)-specific T cell proliferation assays, we found that OVA-pulsed IMs could trigger OVA-specific CD4+ T cell proliferation and Foxp3 expression through MHC-II-, IL-10-, and transforming growth factor β-dependent mechanisms. Moreover, we showed that IMs efficiently captured locally instilled antigens in vivo, did not migrate to the draining lymph nodes, and enhanced local interactions with CD4+ T cells in a model of OVA-induced allergic asthma. These results support that IMs can present antigens to CD4+ T cells and trigger regulatory T cells, which might attenuate lung immune responses and have functional consequences for lung immunity and T cell-mediated disorders.
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Affiliation(s)
| | | | | | - Catherine Sabatel
- Laboratory of Cellular and Molecular Immunology
- Faculty of Veterinary Medicine, University of Liège, Liège, Belgium; and
| | | | - Joey Schyns
- Laboratory of Cellular and Molecular Immunology
- Faculty of Veterinary Medicine, University of Liège, Liège, Belgium; and
| | - Pauline Maréchal
- Laboratory of Immunophysiology, and
- Faculty of Veterinary Medicine, University of Liège, Liège, Belgium; and
| | | | | | | | | | - Margot Meunier
- Laboratory of Immunophysiology, and
- Faculty of Veterinary Medicine, University of Liège, Liège, Belgium; and
| | - Coraline Radermecker
- Laboratory of Immunophysiology, and
- Faculty of Veterinary Medicine, University of Liège, Liège, Belgium; and
| | - Laurence Fiévez
- Laboratory of Cellular and Molecular Immunology
- Faculty of Veterinary Medicine, University of Liège, Liège, Belgium; and
| | - Fabrice Bureau
- Laboratory of Cellular and Molecular Immunology
- Faculty of Veterinary Medicine, University of Liège, Liège, Belgium; and
| | - Thomas Marichal
- Laboratory of Immunophysiology, and
- Faculty of Veterinary Medicine, University of Liège, Liège, Belgium; and
- Walloon Excellence in Life Sciences and Biotechnology (WELBIO) Department, WEL Research Institute, Wavre, Belgium
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2
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Pernet E, Poschmann J, Divangahi M. A complex immune communication between eicosanoids and pulmonary macrophages. Curr Opin Virol 2024; 66:101399. [PMID: 38547562 DOI: 10.1016/j.coviro.2024.101399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 06/07/2024]
Abstract
Respiratory viral infections represent a constant threat for human health and urge for a better understanding of the pulmonary immune response to prevent disease severity. Macrophages are at the center of pulmonary immunity, where they play a pivotal role in orchestrating beneficial and/or pathological outcomes during infection. Eicosanoids, the host bioactive lipid mediators, have re-emerged as important regulators of pulmonary immunity during respiratory viral infections. In this review, we summarize the current knowledge linking eicosanoids' and pulmonary macrophages' homeostatic and antimicrobial functions and discuss eicosanoids as emerging targets for immunotherapy in viral infection.
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Affiliation(s)
- Erwan Pernet
- Department of Medical Biology, Université du Québec à Trois-Rivières, Québec, Canada.
| | - Jeremie Poschmann
- INSERM, Nantes Université, Center for Research in Transplantation and Translational Immunology (CR2TI), UMR 1064, ITUN, Nantes, France
| | - Maziar Divangahi
- Department of Medicine, Department of Pathology, Department of Microbiology & Immunology, McGill University Health Centre, McGill International TB Centre, Meakins-Christie Laboratories, McGill University, Montreal, QC, Canada.
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3
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Ruscitti C, Radermecker C, Marichal T. Journey of monocytes and macrophages upon influenza A virus infection. Curr Opin Virol 2024; 66:101409. [PMID: 38564993 DOI: 10.1016/j.coviro.2024.101409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/19/2024] [Accepted: 03/20/2024] [Indexed: 04/04/2024]
Abstract
Influenza A virus (IAV) infections pose a global health challenge that necessitates a comprehensive understanding of the host immune response to devise effective therapeutic interventions. As monocytes and macrophages play crucial roles in host defence, inflammation, and repair, this review explores the intricate journey of these cells during and after IAV infection. First, we highlight the dynamics and functions of lung-resident macrophage populations post-IAV. Second, we review the current knowledge of recruited monocytes and monocyte-derived cells, emphasising their roles in viral clearance, inflammation, immunomodulation, and tissue repair. Third, we shed light on the consequences of IAV-induced macrophage alterations on long-term lung immunity. We conclude by underscoring current knowledge gaps and exciting prospects for future research in unravelling the complexities of macrophage responses to respiratory viral infections.
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Affiliation(s)
- Cecilia Ruscitti
- Laboratory of Immunophysiology, GIGA Institute, Liège University, Avenue de l'Hôpital 11, 4000 Liège, Belgium; Faculty of Veterinary Medicine, Liège University, Avenue de Cureghem 5D, 4000 Liège, Belgium
| | - Coraline Radermecker
- Laboratory of Immunophysiology, GIGA Institute, Liège University, Avenue de l'Hôpital 11, 4000 Liège, Belgium; Faculty of Veterinary Medicine, Liège University, Avenue de Cureghem 5D, 4000 Liège, Belgium
| | - Thomas Marichal
- Laboratory of Immunophysiology, GIGA Institute, Liège University, Avenue de l'Hôpital 11, 4000 Liège, Belgium; Faculty of Veterinary Medicine, Liège University, Avenue de Cureghem 5D, 4000 Liège, Belgium; Walloon Excellence in Life Sciences and Biotechnology (WELBIO) Department, WEL Research Institute, 1300 Wavre, Belgium.
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4
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Li X, Mara AB, Musial SC, Kolling FW, Gibbings SL, Gerebtsov N, Jakubzick CV. Coordinated chemokine expression defines macrophage subsets across tissues. Nat Immunol 2024; 25:1110-1122. [PMID: 38698086 DOI: 10.1038/s41590-024-01826-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 03/20/2024] [Indexed: 05/05/2024]
Abstract
Lung-resident macrophages, which include alveolar macrophages and interstitial macrophages (IMs), exhibit a high degree of diversity, generally attributed to different activation states, and often complicated by the influx of monocytes into the pool of tissue-resident macrophages. To gain a deeper insight into the functional diversity of IMs, here we perform comprehensive transcriptional profiling of resident IMs and reveal ten distinct chemokine-expressing IM subsets at steady state and during inflammation. Similar IM subsets that exhibited coordinated chemokine signatures and differentially expressed genes were observed across various tissues and species, indicating conserved specialized functional roles. Other macrophage types shared specific IM chemokine profiles, while also presenting their own unique chemokine signatures. Depletion of CD206hi IMs in Pf4creR26EYFP+DTR and Pf4creR26EYFPCx3cr1DTR mice led to diminished inflammatory cell recruitment, reduced tertiary lymphoid structure formation and fewer germinal center B cells in models of allergen- and infection-driven inflammation. These observations highlight the specialized roles of IMs, defined by their coordinated chemokine production, in regulating immune cell influx and organizing tertiary lymphoid tissue architecture.
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Affiliation(s)
- Xin Li
- Department of Microbiology and Immunology, Dartmouth Geisel School of Medicine, Hanover, NH, USA
| | - Arlind B Mara
- Department of Microbiology and Immunology, Dartmouth Geisel School of Medicine, Hanover, NH, USA
| | - Shawn C Musial
- Department of Microbiology and Immunology, Dartmouth Geisel School of Medicine, Hanover, NH, USA
| | - Fred W Kolling
- Dartmouth Cancer Center, Dartmouth Geisel School of Medicine, Hanover, NH, USA
| | | | - Nikita Gerebtsov
- Lab for Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Claudia V Jakubzick
- Department of Microbiology and Immunology, Dartmouth Geisel School of Medicine, Hanover, NH, USA.
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Kong L, Sun P, Pan X, Xiao C, Song B, Song Z. Glycerol monolaurate regulates apoptosis and inflammation by suppressing lipopolysaccharide-induced ROS production and NF-κB activation in avian macrophages. Poult Sci 2024; 103:103870. [PMID: 38851181 DOI: 10.1016/j.psj.2024.103870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/03/2024] [Accepted: 05/13/2024] [Indexed: 06/10/2024] Open
Abstract
Macrophages play a crucial role in both innate and adaptive immunity. However, their abnormal activation can lead to undesirable inflammatory reactions. This study aimed to investigate the effects of glycerol monolaurate (GML), a natural monoester known for its anti-inflammatory and immunoregulatory properties, on avian macrophages using the HD11 cell line. The results indicated that a concentration of 10 μg/mL of GML enhanced the phagocytic activity of HD11 cells (P < 0.05) without affecting cell viability (P > 0.05). GML decreased the expression of M1 macrophage polarization markers, such as CD86 and TNF-α genes (P < 0.05), while increasing the expression of M2 macrophage polarization markers, such as TGF-β1 and IL-10 genes (P < 0.05). GML suppressed ROS production, apoptosis, and the expression of proinflammatory genes (IL-1β and IL-6) induced by LPS (P < 0.05). GML also promoted the expression of TGF-β1 and IL-10 (P < 0.05), both in the presence and absence of LPS exposure. Moreover, GML suppressed the gene expression of TLR4 and NF-κB p65 induced by LPS (P < 0.05), as well as the phosphorylation of NF-κB p65 (P < 0.05). In conclusion, GML exhibited regulatory effects on the polarized state of avian macrophages and demonstrated significant anti-apoptotic and anti-inflammatory properties by suppressing intracellular ROS and the NF-κB signaling pathway.
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Affiliation(s)
- Linglian Kong
- Office of Assessment, Jining Polytechnic, Jining, Shandong 272037, China; Key Laboratory of Efficient Utilization of Non-grain Feed Resources, College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, China
| | - Peng Sun
- Laboratory of Chemistry of Natural Molecules, Gembloux Agro-Bio Tech, University of Liège, Gembloux 5030, Belgium
| | - Xue Pan
- Key Laboratory of Efficient Utilization of Non-grain Feed Resources, College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, China
| | - Chuanpi Xiao
- Laboratory of Chemistry of Natural Molecules, Gembloux Agro-Bio Tech, University of Liège, Gembloux 5030, Belgium
| | - Bochen Song
- Key Laboratory of Efficient Utilization of Non-grain Feed Resources, College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, China
| | - Zhigang Song
- Key Laboratory of Efficient Utilization of Non-grain Feed Resources, College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, China.
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Bishop CR, Yan K, Nguyen W, Rawle DJ, Tang B, Larcher T, Suhrbier A. Microplastics dysregulate innate immunity in the SARS-CoV-2 infected lung. Front Immunol 2024; 15:1382655. [PMID: 38803494 PMCID: PMC11128561 DOI: 10.3389/fimmu.2024.1382655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/24/2024] [Indexed: 05/29/2024] Open
Abstract
Introduction Global microplastic (MP) pollution is now well recognized, with humans and animals consuming and inhaling MPs on a daily basis, with a growing body of concern surrounding the potential impacts on human health. Methods Using a mouse model of mild COVID-19, we describe herein the effects of azide-free 1 μm polystyrene MP beads, co-delivered into lungs with a SARS-CoV-2 omicron BA.5 inoculum. The effect of MPs on the host response to SARS-CoV-2 infection was analysed using histopathology and RNA-Seq at 2 and 6 days post-infection (dpi). Results Although infection reduced clearance of MPs from the lung, virus titres and viral RNA levels were not significantly affected by MPs, and overt MP-associated clinical or histopathological changes were not observed. However, RNA-Seq of infected lungs revealed that MP exposure suppressed innate immune responses at 2 dpi and increased pro-inflammatory signatures at 6 dpi. The cytokine profile at 6 dpi showed a significant correlation with the 'cytokine release syndrome' signature observed in some COVID-19 patients. Discussion The findings are consistent with the recent finding that MPs can inhibit phagocytosis of apoptotic cells via binding of Tim4. They also add to a growing body of literature suggesting that MPs can dysregulate inflammatory processes in specific disease settings.
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Affiliation(s)
- Cameron R. Bishop
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Kexin Yan
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Wilson Nguyen
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Daniel J. Rawle
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Bing Tang
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Thibaut Larcher
- Institut National de Recherche Agronomique, Unité Mixte de Recherche, Oniris, Nantes, France
| | - Andreas Suhrbier
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- Australian Infectious Disease Research Centre, Global Virus Network (GVN) Center of Excellence, Brisbane, QLD, Australia
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Zhao J, Andreev I, Silva HM. Resident tissue macrophages: Key coordinators of tissue homeostasis beyond immunity. Sci Immunol 2024; 9:eadd1967. [PMID: 38608039 DOI: 10.1126/sciimmunol.add1967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 03/18/2024] [Indexed: 04/14/2024]
Abstract
Resident tissue macrophages (RTMs) encompass a highly diverse set of cells abundantly present in every tissue and organ. RTMs are recognized as central players in innate immune responses, and more recently their importance beyond host defense has started to be highlighted. Despite sharing a universal name and several canonical markers, RTMs perform remarkably specialized activities tailored to sustain critical homeostatic functions of the organs they reside in. These cells can mediate neuronal communication, participate in metabolic pathways, and secrete growth factors. In this Review, we summarize how the division of labor among different RTM subsets helps support tissue homeostasis. We discuss how the local microenvironment influences the development of RTMs, the molecular processes they support, and how dysregulation of RTMs can lead to disease. Last, we highlight both the similarities and tissue-specific distinctions of key RTM subsets, aiming to coalesce recent classifications and perspectives into a unified view.
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Affiliation(s)
- Jia Zhao
- Laboratory of Immunophysiology, Ragon Institute of Mass General, MIT, and Harvard, Cambridge, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ilya Andreev
- Laboratory of Immunophysiology, Ragon Institute of Mass General, MIT, and Harvard, Cambridge, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Hernandez Moura Silva
- Laboratory of Immunophysiology, Ragon Institute of Mass General, MIT, and Harvard, Cambridge, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
- Howard Hughes Medical Institute, Cambridge, MA, USA
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8
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Varricchi G, Brightling CE, Grainge C, Lambrecht BN, Chanez P. Airway remodelling in asthma and the epithelium: on the edge of a new era. Eur Respir J 2024; 63:2301619. [PMID: 38609094 PMCID: PMC11024394 DOI: 10.1183/13993003.01619-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 02/15/2024] [Indexed: 04/14/2024]
Abstract
Asthma is a chronic, heterogeneous disease of the airways, often characterised by structural changes known collectively as airway remodelling. In response to environmental insults, including pathogens, allergens and pollutants, the epithelium can initiate remodelling via an inflammatory cascade involving a variety of mediators that have downstream effects on both structural and immune cells. These mediators include the epithelial cytokines thymic stromal lymphopoietin, interleukin (IL)-33 and IL-25, which facilitate airway remodelling through cross-talk between epithelial cells and fibroblasts, and between mast cells and airway smooth muscle cells, as well as through signalling with immune cells such as macrophages. The epithelium can also initiate airway remodelling independently of inflammation in response to the mechanical stress present during bronchoconstriction. Furthermore, genetic and epigenetic alterations to epithelial components are believed to influence remodelling. Here, we review recent advances in our understanding of the roles of the epithelium and epithelial cytokines in driving airway remodelling, facilitated by developments in genetic sequencing and imaging techniques. We also explore how new and existing therapeutics that target the epithelium and epithelial cytokines could modify airway remodelling.
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Affiliation(s)
- Gilda Varricchi
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), School of Medicine, University of Naples Federico II, WAO Center of Excellence, Naples, Italy
- Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council, Naples, Italy
- G. Varricchi and C.E. Brightling contributed equally
| | - Christopher E. Brightling
- Institute for Lung Health, NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
- G. Varricchi and C.E. Brightling contributed equally
| | - Christopher Grainge
- School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
| | - Bart N. Lambrecht
- Center for Inflammation Research, Laboratory of Immunoregulation and Mucosal Immunology, VIB Center for Inflammation Research, Ghent, Belgium
| | - Pascal Chanez
- Department of Respiratory Diseases, Aix-Marseille University, Marseille, France
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Zhong H, Ji J, Zhuang J, Xiong Z, Xie P, Liu X, Zheng J, Tian W, Hong X, Tang J. Tissue-resident macrophages exacerbate lung injury after remote sterile damage. Cell Mol Immunol 2024; 21:332-348. [PMID: 38228746 PMCID: PMC10979030 DOI: 10.1038/s41423-024-01125-1] [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: 07/04/2023] [Accepted: 12/26/2023] [Indexed: 01/18/2024] Open
Abstract
Remote organ injury, which is a common secondary complication of sterile tissue damage, is a major cause of poor prognosis and is difficult to manage. Here, we report the critical role of tissue-resident macrophages in lung injury after trauma or stroke through the inflammatory response. We found that depleting tissue-resident macrophages rather than disrupting the recruitment of monocyte-derived macrophages attenuated lung injury after trauma or stroke. Our findings revealed that the release of circulating alarmins from sites of distant sterile tissue damage triggered an inflammatory response in lung-resident macrophages by binding to receptor for advanced glycation end products (RAGE) on the membrane, which activated epidermal growth factor receptor (EGFR). Mechanistically, ligand-activated RAGE triggered EGFR activation through an interaction, leading to Rab5-mediated RAGE internalization and EGFR phosphorylation, which subsequently recruited and activated P38; this, in turn, promoted RAGE translation and trafficking to the plasma membrane to increase the cellular response to RAGE ligands, consequently exacerbating inflammation. Our study also showed that the loss of RAGE or EGFR expression by adoptive transfer of macrophages, blocking the function of RAGE with a neutralizing antibody, or pharmacological inhibition of EGFR activation in macrophages could protect against trauma- or stroke-induced remote lung injury. Therefore, our study revealed that targeting the RAGE-EGFR signaling pathway in tissue-resident macrophages is a potential therapeutic approach for treating secondary complications of sterile damage.
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Affiliation(s)
- Hanhui Zhong
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Jingjing Ji
- The Department of Critical Care Medicine, General Hospital of Southern Theater Command of PLA, Guangzhou, China
| | - Jinling Zhuang
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Ziying Xiong
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Pengyun Xie
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Xiaolei Liu
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Jundi Zheng
- The Department of Respiratory Medicine, Guangdong Provincial Hospital of Integrated Chinese and Western Medicine, Foshan, China
| | - Wangli Tian
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Xiaoyang Hong
- Pediatric Intensive Care Unit, Senior Department of Pediatrics, the Seventh Medical Center of PLA General Hospital, Beijing, China.
| | - Jing Tang
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China.
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Camp B, Jorde I, Sittel F, Pausder A, Jeron A, Bruder D, Schreiber J, Stegemann-Koniszewski S. Comprehensive analysis of lung macrophages and dendritic cells in two murine models of allergic airway inflammation reveals model- and subset-specific accumulation and phenotypic alterations. Front Immunol 2024; 15:1374670. [PMID: 38529288 PMCID: PMC10961404 DOI: 10.3389/fimmu.2024.1374670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 02/27/2024] [Indexed: 03/27/2024] Open
Abstract
Introduction Allergic asthma has been mainly attributed to T helper type 2 (Th2) and proinflammatory responses but many cellular processes remain elusive. There is increasing evidence for distinct roles for macrophage and dendritic cell (DC) subsets in allergic airway inflammation (AAI). At the same time, there are various mouse models for allergic asthma that have been of utmost importance in identifying key inflammatory pathways in AAI but that differ in the allergen and/or route of sensitization. It is unclear whether and how the accumulation and activation of specialized macrophage and DC subsets depend on the experimental model chosen for analyses. Methods In our study, we employed high-parameter spectral flow cytometry to comprehensively assess the accumulation and phenotypic alterations of different macrophage- and DC-subsets in the lung in an OVA- and an HDM-mediated mouse model of AAI. Results We observed subset-specific as well as model-specific characteristics with respect to cell numbers and functional marker expression. Generally, alveolar as opposed to interstitial macrophages showed increased MHCII surface expression in AAI. Between the models, we observed significantly increased numbers of alveolar macrophages, CD103+ DC and CD11b+ DC in HDM-mediated AAI, concurrent with significantly increased airway interleukin-4 but decreased total serum IgE levels. Further, increased expression of CD80 and CD86 on DC was exclusively detected in HDM-mediated AAI. Discussion Our study demonstrates a model-specific involvement of macrophage and DC subsets in AAI. It further highlights spectral flow cytometry as a valuable tool for their comprehensive analysis under inflammatory conditions in the lung.
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Affiliation(s)
- Belinda Camp
- Experimental Pneumology, Department of Pneumology, University Hospital Magdeburg, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Ilka Jorde
- Experimental Pneumology, Department of Pneumology, University Hospital Magdeburg, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Franka Sittel
- Experimental Pneumology, Department of Pneumology, University Hospital Magdeburg, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Alexander Pausder
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, University Hospital Magdeburg, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Andreas Jeron
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, University Hospital Magdeburg, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
- Department of Pediatrics, Ludwig-Maximilians University of Munich, Munich, Germany
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Dunja Bruder
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, University Hospital Magdeburg, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Jens Schreiber
- Experimental Pneumology, Department of Pneumology, University Hospital Magdeburg, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Sabine Stegemann-Koniszewski
- Experimental Pneumology, Department of Pneumology, University Hospital Magdeburg, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
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11
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Ammarah U, Pereira-Nunes A, Delfini M, Mazzone M. From monocyte-derived macrophages to resident macrophages-how metabolism leads their way in cancer. Mol Oncol 2024. [PMID: 38411356 DOI: 10.1002/1878-0261.13618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/24/2024] [Accepted: 02/16/2024] [Indexed: 02/28/2024] Open
Abstract
Macrophages are innate immune cells that play key roles during both homeostasis and disease. Depending on the microenvironmental cues sensed in different tissues, macrophages are known to acquire specific phenotypes and exhibit unique features that, ultimately, orchestrate tissue homeostasis, defense, and repair. Within the tumor microenvironment, macrophages are referred to as tumor-associated macrophages (TAMs) and constitute a heterogeneous population. Like their tissue resident counterpart, TAMs are plastic and can switch function and phenotype according to the niche-derived stimuli sensed. While changes in TAM phenotype are known to be accompanied by adaptive alterations in their cell metabolism, it is reported that metabolic reprogramming of macrophages can dictate their activation state and function. In line with these observations, recent research efforts have been focused on defining the metabolic traits of TAM subsets in different tumor malignancies and understanding their role in cancer progression and metastasis formation. This knowledge will pave the way to novel therapeutic strategies tailored to cancer subtype-specific metabolic landscapes. This review outlines the metabolic characteristics of distinct TAM subsets and their implications in tumorigenesis across multiple cancer types.
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Affiliation(s)
- Ummi Ammarah
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, VIB, Leuven, Belgium
- Laboratory of Tumor Inflammation and Angiogenesis, Department of Oncology, Center for Cancer Biology, KU Leuven, Belgium
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Centre, University of Torino, Italy
| | - Andreia Pereira-Nunes
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, VIB, Leuven, Belgium
- Laboratory of Tumor Inflammation and Angiogenesis, Department of Oncology, Center for Cancer Biology, KU Leuven, Belgium
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Marcello Delfini
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, VIB, Leuven, Belgium
- Laboratory of Tumor Inflammation and Angiogenesis, Department of Oncology, Center for Cancer Biology, KU Leuven, Belgium
| | - Massimiliano Mazzone
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, VIB, Leuven, Belgium
- Laboratory of Tumor Inflammation and Angiogenesis, Department of Oncology, Center for Cancer Biology, KU Leuven, Belgium
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12
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Cao M, Wang Z, Lan W, Xiang B, Liao W, Zhou J, Liu X, Wang Y, Zhang S, Lu S, Lang J, Zhao Y. The roles of tissue resident macrophages in health and cancer. Exp Hematol Oncol 2024; 13:3. [PMID: 38229178 PMCID: PMC10790434 DOI: 10.1186/s40164-023-00469-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 12/28/2023] [Indexed: 01/18/2024] Open
Abstract
As integral components of the immune microenvironment, tissue resident macrophages (TRMs) represent a self-renewing and long-lived cell population that plays crucial roles in maintaining homeostasis, promoting tissue remodeling after damage, defending against inflammation and even orchestrating cancer progression. However, the exact functions and roles of TRMs in cancer are not yet well understood. TRMs exhibit either pro-tumorigenic or anti-tumorigenic effects by engaging in phagocytosis and secreting diverse cytokines, chemokines, and growth factors to modulate the adaptive immune system. The life-span, turnover kinetics and monocyte replenishment of TRMs vary among different organs, adding to the complexity and controversial findings in TRMs studies. Considering the complexity of tissue associated macrophage origin, macrophages targeting strategy of each ontogeny should be carefully evaluated. Consequently, acquiring a comprehensive understanding of TRMs' origin, function, homeostasis, characteristics, and their roles in cancer for each specific organ holds significant research value. In this review, we aim to provide an outline of homeostasis and characteristics of resident macrophages in the lung, liver, brain, skin and intestinal, as well as their roles in modulating primary and metastatic cancer, which may inform and serve the future design of targeted therapies.
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Affiliation(s)
- Minmin Cao
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zihao Wang
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Wanying Lan
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
- Guixi Community Health Center of the Chengdu High-Tech Zone, Chengdu, China
| | - Binghua Xiang
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Wenjun Liao
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Jie Zhou
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Xiaomeng Liu
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Yiling Wang
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Shichuan Zhang
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Shun Lu
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Jinyi Lang
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Yue Zhao
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.
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13
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Baasch S, Henschel J, Henneke P. Combined Host-Pathogen Fate Mapping to Investigate Lung Macrophages in Viral Infection. Methods Mol Biol 2024; 2713:347-361. [PMID: 37639135 DOI: 10.1007/978-1-0716-3437-0_24] [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] [Indexed: 08/29/2023]
Abstract
Macrophage identity, as defined by epigenetic, transcriptional, proteomic, and functional programs, is greatly impacted by cues originating from the microenvironment. As a consequence, immunophenotyping based on surface marker expression is established and reliable in homeostatic conditions, whereas environmental challenges, in particular infections, severely hamper the determination of identity states. This has become more evident with recent discoveries that macrophage-inherent plasticity may go beyond limits of lineage-defining immunophenotypes. Therefore, transgenic fate mapping tools, such as the phage-derived loxP-cre-system, are essential for the analysis of macrophage adaptation in the tissue under extreme environmental conditions, for example, upon encounter with pathogens. In this chapter, we describe an advanced application of the loxP-cre-system during infection. Here, the host encodes a cell type-specific cre-recombinase, while the pathogen harbors a STOP-floxed fluorescent reporter gene. As an instructive example for the versatility of the system, we demonstrate that alveolar macrophages are predominantly targeted after respiratory tract infection with mouse cytomegalovirus (MCMV). Combined host-pathogen fate mapping not only enables to distinguish between infected and non-infected (bystander) macrophages but also spurs exploration of phenotypic adaptation and tracing of cellular localization in the context of MCMV infection. Moreover, we provide a gating strategy for resolving the diversity of pulmonary immune cell populations.
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Affiliation(s)
- Sebastian Baasch
- Institute for Imunodeficiency, Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
- Institute for Infection Prevention and Control, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
| | - Julia Henschel
- Institute for Imunodeficiency, Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Philipp Henneke
- Institute for Imunodeficiency, Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Institute for Infection Prevention and Control, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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14
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Stumpff JP, Kim SY, McFadden MI, Nishida A, Shirazi R, Steuerman Y, Gat-Viks I, Forero A, Nair MG, Morrison J. Pleural macrophages translocate to the lung during infection to promote improved influenza outcomes. Proc Natl Acad Sci U S A 2023; 120:e2300474120. [PMID: 38100417 PMCID: PMC10743374 DOI: 10.1073/pnas.2300474120] [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: 01/10/2023] [Accepted: 10/30/2023] [Indexed: 12/17/2023] Open
Abstract
Seasonal influenza results in 3 to 5 million cases of severe disease and 250,000 to 500,000 deaths annually. Macrophages have been implicated in both the resolution and progression of the disease, but the drivers of these outcomes are poorly understood. We probed mouse lung transcriptomic datasets using the Digital Cell Quantifier algorithm to predict immune cell subsets that correlated with mild or severe influenza A virus (IAV) infection outcomes. We identified a unique lung macrophage population that transcriptionally resembled small serosal cavity macrophages and whose presence correlated with mild disease. Until now, the study of serosal macrophage translocation in the context of viral infections has been neglected. Here, we show that pleural macrophages (PMs) migrate from the pleural cavity to the lung after infection with IAV. We found that the depletion of PMs increased morbidity and pulmonary inflammation. There were increased proinflammatory cytokines in the pleural cavity and an influx of neutrophils within the lung. Our results show that PMs are recruited to the lung during IAV infection and contribute to recovery from influenza. This study expands our knowledge of PM plasticity and identifies a source of lung macrophages independent of monocyte recruitment and local proliferation.
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Affiliation(s)
- James P. Stumpff
- Department of Microbiology and Plant Pathology, University of California, Riverside, CA92521
| | - Sang Yong Kim
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA92521
| | - Matthew I. McFadden
- Department of Microbial Infection and Immunity, College of Medicine, The Ohio State University, Columbus, OH43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH43210
| | - Andrew Nishida
- Department of Microbiology, University of Washington, Seattle, WA98109
| | - Roksana Shirazi
- Department of Microbiology and Plant Pathology, University of California, Riverside, CA92521
| | - Yael Steuerman
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv6997801, Israel
| | - Irit Gat-Viks
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv6997801, Israel
| | - Adriana Forero
- Department of Microbial Infection and Immunity, College of Medicine, The Ohio State University, Columbus, OH43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH43210
| | - Meera G. Nair
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA92521
| | - Juliet Morrison
- Department of Microbiology and Plant Pathology, University of California, Riverside, CA92521
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15
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Lai R, Williams T, Rakib T, Lee J, Behar SM. Heterogeneity in lung macrophage control of Mycobacterium tuberculosis is determined by T cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.29.569283. [PMID: 38076803 PMCID: PMC10705395 DOI: 10.1101/2023.11.29.569283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Following Mycobacterium tuberculosis infection, alveolar macrophages are initially infected but ineffectively restrict bacterial replication. The distribution of M. tuberculosis among different cell types in the lung changes with the onset of T cell immunity when the dominant infected cellular niche shifts from alveolar to monocyte-derived macrophages (MDM). We hypothesize that changes in bacterial distribution among different cell types is driven by differences in T cell recognition of infected cells and their subsequent activation of antimicrobial effector mechanisms. We show that CD4 and CD8 T cells efficiently eliminate M. tuberculosis infection in alveolar macrophages, but they have less impact on suppressing infection in MDM, which may be a bacterial niche. Importantly, CD4 T cell responses enhance MDM recruitment to the lung. Thus, the outcome of infection depends on the interaction between the T cell subset and the infected cell; both contribute to the resolution and persistence of the infection.
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Affiliation(s)
- Rocky Lai
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Travis Williams
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Tasfia Rakib
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Jinhee Lee
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Samuel M. Behar
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts, USA
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16
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Aiassa LV, Battaglia G, Rizzello L. The multivalency game ruling the biology of immunity. BIOPHYSICS REVIEWS 2023; 4:041306. [PMID: 38505426 PMCID: PMC10914136 DOI: 10.1063/5.0166165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 11/27/2023] [Indexed: 03/21/2024]
Abstract
Macrophages play a crucial role in our immune system, preserving tissue health and defending against harmful pathogens. This article examines the diversity of macrophages influenced by tissue-specific functions and developmental origins, both in normal and disease conditions. Understanding the spectrum of macrophage activation states, especially in pathological situations where they contribute significantly to disease progression, is essential to develop targeted therapies effectively. These states are characterized by unique receptor compositions and phenotypes, but they share commonalities. Traditional drugs that target individual entities are often insufficient. A promising approach involves using multivalent systems adorned with multiple ligands to selectively target specific macrophage populations based on their phenotype. Achieving this requires constructing supramolecular structures, typically at the nanoscale. This review explores the theoretical foundation of engineered multivalent nanosystems, dissecting the key parameters governing specific interactions. The goal is to design targeting systems based on distinct cell phenotypes, providing a pragmatic approach to navigating macrophage heterogeneity's complexities for more effective therapeutic interventions.
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17
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Rodríguez-Morales P, Franklin RA. Macrophage phenotypes and functions: resolving inflammation and restoring homeostasis. Trends Immunol 2023; 44:986-998. [PMID: 37940394 PMCID: PMC10841626 DOI: 10.1016/j.it.2023.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/07/2023] [Accepted: 10/09/2023] [Indexed: 11/10/2023]
Abstract
Inflammation must be tightly regulated to both defend against pathogens and restore tissue homeostasis. The resolution of inflammatory responses is a dynamic process orchestrated by cells of the immune system. Macrophages, tissue-resident innate immune cells, are key players in modulating inflammation. Here, we review recent work highlighting the importance of macrophages in tissue resolution and the return to homeostasis. We propose that enhancing macrophage pro-resolution functions represents a novel and widely applicable therapeutic strategy to dampen inflammation, promote repair, and restore tissue integrity and function.
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Affiliation(s)
| | - Ruth A Franklin
- Department of Immunology, Harvard Medical School, Boston, MA, USA; Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA.
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18
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Kusakabe T, Lin WY, Cheong JG, Singh G, Ravishankar A, Yeung ST, Mesko M, DeCelie MB, Carriche G, Zhao Z, Rand S, Doron I, Putzel GG, Worgall S, Cushing M, Westblade L, Inghirami G, Parkhurst CN, Guo CJ, Schotsaert M, García-Sastre A, Josefowicz SZ, Salvatore M, Iliev ID. Fungal microbiota sustains lasting immune activation of neutrophils and their progenitors in severe COVID-19. Nat Immunol 2023; 24:1879-1889. [PMID: 37872315 PMCID: PMC10805066 DOI: 10.1038/s41590-023-01637-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/06/2023] [Indexed: 10/25/2023]
Abstract
Gastrointestinal fungal dysbiosis is a hallmark of several diseases marked by systemic immune activation. Whether persistent pathobiont colonization during immune alterations and impaired gut barrier function has a durable impact on host immunity is unknown. We found that elevated levels of Candida albicans immunoglobulin G (IgG) antibodies marked patients with severe COVID-19 (sCOVID-19) who had intestinal Candida overgrowth, mycobiota dysbiosis and systemic neutrophilia. Analysis of hematopoietic stem cell progenitors in sCOVID-19 revealed transcriptional changes in antifungal immunity pathways and reprogramming of granulocyte myeloid progenitors (GMPs) for up to a year. Mice colonized with C. albicans patient isolates experienced increased lung neutrophilia and pulmonary NETosis during severe acute respiratory syndrome coronavirus-2 infection, which were partially resolved with antifungal treatment or by interleukin-6 receptor blockade. sCOVID-19 patients treated with tocilizumab experienced sustained reductions in C. albicans IgG antibodies titers and GMP transcriptional changes. These findings suggest that gut fungal pathobionts may contribute to immune activation during inflammatory diseases, offering potential mycobiota-immune therapeutic strategies for sCOVID-19 with prolonged symptoms.
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Affiliation(s)
- Takato Kusakabe
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease (JRI), Weill Cornell Medicine, New York City, NY, USA
| | - Woan-Yu Lin
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease (JRI), Weill Cornell Medicine, New York City, NY, USA
- Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, Cornell University, New York City, NY, USA
| | - Jin-Gyu Cheong
- Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, Cornell University, New York City, NY, USA
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York City, NY, USA
| | - Gagandeep Singh
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
- Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Arjun Ravishankar
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York City, NY, USA
| | - Stephen T Yeung
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA
- Department of Microbiology, New York University, Langone Health, New York City, NY, USA
| | - Marissa Mesko
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease (JRI), Weill Cornell Medicine, New York City, NY, USA
| | - Meghan Bialt DeCelie
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease (JRI), Weill Cornell Medicine, New York City, NY, USA
| | - Guilhermina Carriche
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease (JRI), Weill Cornell Medicine, New York City, NY, USA
| | - Zhen Zhao
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York City, NY, USA
| | - Sophie Rand
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York City, NY, USA
| | - Itai Doron
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease (JRI), Weill Cornell Medicine, New York City, NY, USA
| | - Gregory G Putzel
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease (JRI), Weill Cornell Medicine, New York City, NY, USA
| | - Stefan Worgall
- Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, Cornell University, New York City, NY, USA
- Department of Pediatrics, Weill Cornell Medicine, New York City, NY, USA
| | - Melissa Cushing
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York City, NY, USA
| | - Lars Westblade
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York City, NY, USA
| | - Giorgio Inghirami
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York City, NY, USA
| | - Christopher N Parkhurst
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA
| | - Chun-Jun Guo
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease (JRI), Weill Cornell Medicine, New York City, NY, USA
- Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, Cornell University, New York City, NY, USA
- Department of Microbiology and Immunology, Weill Cornell Medicine, New York City, NY, USA
| | - Michael Schotsaert
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
- Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Adolfo García-Sastre
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
- Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
- Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai New York, New York City, NY, USA
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Steven Z Josefowicz
- Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, Cornell University, New York City, NY, USA
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York City, NY, USA
| | - Mirella Salvatore
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA
- Department of Population Health Sciences, Weill Cornell Medicine, New York City, NY, USA
| | - Iliyan D Iliev
- Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York City, NY, USA.
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease (JRI), Weill Cornell Medicine, New York City, NY, USA.
- Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, Cornell University, New York City, NY, USA.
- Department of Microbiology and Immunology, Weill Cornell Medicine, New York City, NY, USA.
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19
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Trevizan-Bau P, Mazzone SB. Neuroimmune pathways regulating airway inflammation. Ann Allergy Asthma Immunol 2023; 131:550-560. [PMID: 37517657 DOI: 10.1016/j.anai.2023.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/24/2023] [Accepted: 07/20/2023] [Indexed: 08/01/2023]
Abstract
Airways diseases are typically accompanied by inflammation, which has long been known to contribute to obstruction, mucus hypersecretion, dyspnea, cough, and other characteristic symptoms displayed in patients. Clinical interventions, therefore, often target inflammation to reverse lung pathology and reduce morbidity. The airways and lungs are densely innervated by subsets of nerve fibers, which are not only impacted by pulmonary inflammation but, in addition, likely serve as important regulators of immune cell function. This bidirectional neuroimmune crosstalk is supported by close spatial relationships between immune cells and airway nerve fibers, complementary neural and immune signaling pathways, local specialized airway chemosensory cells, and dedicated reflex circuits. In this article, we review the recent literature on this topic and present state-of-the-art evidence supporting the role of neuroimmune interactions in airway inflammation. In addition, we extend this evidence to synthesize considerations for the clinical translation of these discoveries to improve the management of patients with airway disease.
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Affiliation(s)
- Pedro Trevizan-Bau
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia; Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Stuart B Mazzone
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, Victoria, Australia.
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20
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Hume DA, Millard SM, Pettit AR. Macrophage heterogeneity in the single-cell era: facts and artifacts. Blood 2023; 142:1339-1347. [PMID: 37595274 DOI: 10.1182/blood.2023020597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/09/2023] [Accepted: 08/09/2023] [Indexed: 08/20/2023] Open
Abstract
In this spotlight, we review technical issues that compromise single-cell analysis of tissue macrophages, including limited and unrepresentative yields, fragmentation and generation of remnants, and activation during tissue disaggregation. These issues may lead to a misleading definition of subpopulations of macrophages and the expression of macrophage-specific transcripts by unrelated cells. Recognition of the technical limitations of single-cell approaches is required in order to map the full spectrum of tissue-resident macrophage heterogeneity and assess its biological significance.
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Affiliation(s)
- David A Hume
- Mater Research Institute-University of Queensland, Translational Research Institute, Woolloongabba, QLD, Australia
| | - Susan M Millard
- Mater Research Institute-University of Queensland, Translational Research Institute, Woolloongabba, QLD, Australia
| | - Allison R Pettit
- Mater Research Institute-University of Queensland, Translational Research Institute, Woolloongabba, QLD, Australia
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21
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Wang K, Espinosa V, Rivera A. Commander-in-chief: monocytes rally the troops for defense against aspergillosis. Curr Opin Immunol 2023; 84:102371. [PMID: 37523967 DOI: 10.1016/j.coi.2023.102371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/23/2023] [Accepted: 06/24/2023] [Indexed: 08/02/2023]
Abstract
The detrimental impact of fungal infections to human health has steadily increased over the past decades. In October of 2022, the World Health Organization published the first ever fungal-pathogen priority list highlighting increased awareness of this problem, and the need for more research in this area. There were four distinct fungal pathogens identified as critical priority groups with Aspergillus fumigatus (Af) being the only mold. Af is a common environmental fungus responsible for over 90% of invasive aspergillosis cases worldwide. Pulmonary protection against Af is critically dependent on innate effector cells with essential roles played by neutrophils and monocytes. In this review, we will summarize our current understanding of how monocytes help orchestrate antifungal defense against Af.
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Affiliation(s)
- Keyi Wang
- Center for Immunity and Inflammation, Rutgers Biomedical and Health Sciences, New Jersey Medical School, Newark, NJ, USA; School of Graduate Studies, Rutgers Biomedical and Health Sciences, New Jersey Medical School, Newark, NJ, USA
| | - Vanessa Espinosa
- Center for Immunity and Inflammation, Rutgers Biomedical and Health Sciences, New Jersey Medical School, Newark, NJ, USA
| | - Amariliz Rivera
- Center for Immunity and Inflammation, Rutgers Biomedical and Health Sciences, New Jersey Medical School, Newark, NJ, USA.
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22
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Xiong Y, Chu X, Yu T, Knoedler S, Schroeter A, Lu L, Zha K, Lin Z, Jiang D, Rinkevich Y, Panayi AC, Mi B, Liu G, Zhao Y. Reactive Oxygen Species-Scavenging Nanosystems in the Treatment of Diabetic Wounds. Adv Healthc Mater 2023; 12:e2300779. [PMID: 37051860 DOI: 10.1002/adhm.202300779] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/07/2023] [Indexed: 04/14/2023]
Abstract
Diabetic wounds are characterized by drug-resistant bacterial infections, biofilm formation, impaired angiogenesis and perfusion, and oxidative damage to the microenvironment. Given their complex nature, diabetic wounds remain a major challenge in clinical practice. Reactive oxygen species (ROS), which have been shown to trigger hyperinflammation and excessive cellular apoptosis, play a pivotal role in the pathogenesis of diabetic wounds. ROS-scavenging nanosystems have recently emerged as smart and multifunctional nanomedicines with broad synergistic applicability. The documented anti-inflammatory and pro-angiogenic ability of ROS-scavenging treatments predestines these nanosystems as promising options for the treatment of diabetic wounds. Yet, in this context, the therapeutic applicability and efficacy of ROS-scavenging nanosystems remain to be elucidated. Herein, the role of ROS in diabetic wounds is deciphered, and the properties and strengths of nanosystems with ROS-scavenging capacity for the treatment of diabetic wounds are summarized. In addition, the current challenges of such nanosystems and their potential future directions are discussed through a clinical-translational lens.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Xiangyu Chu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Tao Yu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Samuel Knoedler
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02152, USA
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Max-Lebsche-Platz 31, 81377, Munich, Germany
| | - Andreas Schroeter
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Hannover Medical School, 30625, Hanover, Lower Saxony, Germany
| | - Li Lu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Kangkang Zha
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Ze Lin
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Dongsheng Jiang
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Max-Lebsche-Platz 31, 81377, Munich, Germany
| | - Yuval Rinkevich
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Max-Lebsche-Platz 31, 81377, Munich, Germany
| | - Adriana C Panayi
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02152, USA
- Department of Hand, Plastic and Reconstructive Surgery, Microsurgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071, Ludwigshafen, Germany
| | - Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Yanli Zhao
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
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23
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Wang L, Li Z, Lu T, Su L, Mao C, Zhang Y, Zhang X, Jiang X, Xie H, Yu X. The potential mechanism of Choulingdan mixture in improving acute lung injury based on HPLC-Q-TOF-MS, network pharmacology and in vivo experiments. Biomed Chromatogr 2023; 37:e5709. [PMID: 37533317 DOI: 10.1002/bmc.5709] [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: 03/05/2023] [Revised: 06/29/2023] [Accepted: 07/07/2023] [Indexed: 08/04/2023]
Abstract
Choulingdan mixture (CLDM) is an empirical clinical prescription for the adjuvant treatment of acute lung injury (ALI). CLDM has been used for almost 30 years in the clinic. However, its mechanism for improving ALI still needs to be investigated. In this study, high-performance liquid chromatography-quadrupole/time-of-flight mass spectrometry (HPLC-Q-TOF-MS/MS) was applied to characterize the overall chemical composition of CLDM. A total of 93 ingredients were characterized, including 25 flavonoids, 20 organic acids, 11 saponins, nine terpenoids, seven tannins and 21 other compounds. Then network pharmacology was applied to predict the potential bioactive components, target genes and signaling pathways of CLDM in improving ALI. Additionally, molecular docking was performed to demonstrate the interaction between the active ingredients and the disease targets. Finally, animal experiments further confirmed that CLDM significantly inhibits pulmonary inflammation, pulmonary edema and oxidative stress in lipopolysaccharide-induced ALI mice by inhibiting the PI3K-AKT signaling pathway. This study enhanced the amount and accuracy of compounds of CLDM and provided new insights into CLDM preventing and treating ALI.
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Affiliation(s)
- Lili Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Zhengyan Li
- Department of Pharmacy, Kunming Municipal Hospital of Traditional Chinese Medicine, Kunming, China
| | - Tulin Lu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Lianlin Su
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Chunqin Mao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yiting Zhang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xinrui Zhang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaofeng Jiang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Hui Xie
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaoling Yu
- Department of Pharmacy, Kunming Municipal Hospital of Traditional Chinese Medicine, Kunming, China
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24
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Gupte SA, Bakshi CS, Blackham E, Duhamel GE, Jordan A, Salgame P, D'silva M, Khan MY, Nadler J, Gupte R. The severity of SARS-CoV-2 infection in K18-hACE2 mice is attenuated by a novel steroid-derivative in a gender-specific manner. Br J Pharmacol 2023; 180:2677-2693. [PMID: 37259182 PMCID: PMC10999099 DOI: 10.1111/bph.16155] [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: 11/29/2022] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 06/02/2023] Open
Abstract
BACKGROUND AND PURPOSE COVID-19 infections caused by SARS-CoV-2 disseminated through human-to-human transmission can evoke severe inflammation. Treatments to reduce the SARS-CoV-2-associated inflammation are needed and are the focus of much research. In this study, we investigated the effect of N-ethyl-N'-[(3β,5α)-17-oxoandrostan-3-yl] urea (NEOU), a novel 17α-ketosteroid derivative, on the severity of COVID-19 infections. EXPERIMENTAL APPROACH Studies were conducted in SARS-CoV-2-infected K18-hACE2 mice. KEY RESULTS SARS-CoV-2-infected K18-hACE2 mice developed severe inflammatory crises and immune responses along with up-regulation of genes in associated signalling pathways in male more than female mice. Notably, SARS-CoV-2 infection down-regulated genes encoding drug metabolizing cytochrome P450 enzymes in male but not female mice. Treatment with NEOU (1 mg·kg-1 ·day-1 ) 24 or 72 h post-viral infection alleviated lung injury by decreasing expression of genes encoding inflammatory cytokines and chemokines while increasing expression of genes encoding immunoglobins. In situ hybridization using RNA scope™ probes and immunohistochemical assays revealed that NEOU increased resident CD169+ immunoregulatory macrophages and IBA-1 immunoreactive macrophage-dendritic cells within alveolar spaces in the lungs of infected mice. Consequentially, NEOU reduced morbidity more prominently in male than female mice. However, NEOU increased median survival time and accelerated recovery from infection by 6 days in both males and females. CONCLUSIONS AND IMPLICATIONS These findings demonstrate that SARS-CoV-2 exhibits gender bias by differentially regulating genes encoding inflammatory cytokines, immunogenic factors and drug-metabolizing enzymes, in male versus female mice. Most importantly, we identified a novel 17α-ketosteroid that reduces the severity of COVID-19 infection and could be beneficial for reducing impact of COVID-19.
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Affiliation(s)
- Sachin A Gupte
- Department of Pharmacology, New York Medical College, Valhalla, New York, USA
| | - Chandra Shekhar Bakshi
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, New York, USA
| | | | - Gerald E Duhamel
- Department of Biomedical Sciences and New York State Animal Health Diagnostic Center and Section of Anatomic Pathology, College of Veterinary Medicine, Cornell University, Ithaca, New York, USA
| | | | - Padmini Salgame
- Department of Medicine, Division of Infectious Diseases and The Center for Emerging Pathogens, Rutgers-New Jersey Medical School, Newark, New Jersey, USA
| | - Melinee D'silva
- Department of Pharmacology, New York Medical College, Valhalla, New York, USA
| | - Mohammad Y Khan
- Department of Pharmacology, New York Medical College, Valhalla, New York, USA
| | - Jerry Nadler
- Department of Pharmacology, New York Medical College, Valhalla, New York, USA
- Department of Medicine, New York Medical College, Valhalla, New York, USA
| | - Rakhee Gupte
- Department of Pharmacology, New York Medical College, Valhalla, New York, USA
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25
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Li H, Wang A, Zhang Y, Wei F. Diverse roles of lung macrophages in the immune response to influenza A virus. Front Microbiol 2023; 14:1260543. [PMID: 37779697 PMCID: PMC10534047 DOI: 10.3389/fmicb.2023.1260543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 08/16/2023] [Indexed: 10/03/2023] Open
Abstract
Influenza viruses are one of the major causes of human respiratory infections and the newly emerging and re-emerging strains of influenza virus are the cause of seasonal epidemics and occasional pandemics, resulting in a huge threat to global public health systems. As one of the early immune cells can rapidly recognize and respond to influenza viruses in the respiratory, lung macrophages play an important role in controlling the severity of influenza disease by limiting viral replication, modulating the local inflammatory response, and initiating subsequent adaptive immune responses. However, influenza virus reproduction in macrophages is both strain- and macrophage type-dependent, and ineffective replication of some viral strains in mouse macrophages has been observed. This review discusses the function of lung macrophages in influenza virus infection in order to better understand the pathogenesis of the influenza virus.
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Affiliation(s)
- Haoning Li
- College of Animal Science and Technology, Ningxia University, Yinchuan, China
| | - Aoxue Wang
- College of Animal Science and Technology, Ningxia University, Yinchuan, China
| | - Yuying Zhang
- School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Fanhua Wei
- College of Animal Science and Technology, Ningxia University, Yinchuan, China
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26
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Mass E, Nimmerjahn F, Kierdorf K, Schlitzer A. Tissue-specific macrophages: how they develop and choreograph tissue biology. Nat Rev Immunol 2023; 23:563-579. [PMID: 36922638 PMCID: PMC10017071 DOI: 10.1038/s41577-023-00848-y] [Citation(s) in RCA: 52] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2023] [Indexed: 03/17/2023]
Abstract
Macrophages are innate immune cells that form a 3D network in all our tissues, where they phagocytose dying cells and cell debris, immune complexes, bacteria and other waste products. Simultaneously, they produce growth factors and signalling molecules - such activities not only promote host protection in response to invading microorganisms but are also crucial for organ development and homeostasis. There is mounting evidence of macrophages orchestrating fundamental physiological processes, such as blood vessel formation, adipogenesis, metabolism and central and peripheral neuronal function. In parallel, novel methodologies have led to the characterization of tissue-specific macrophages, with distinct subpopulations of these cells showing different developmental trajectories, transcriptional programmes and life cycles. Here, we summarize our growing knowledge of macrophage diversity and how macrophage subsets orchestrate tissue development and function. We further interrelate macrophage ontogeny with their core functions across tissues, that is, the signalling events within the macrophage niche that may control organ functionality during development, homeostasis and ageing. Finally, we highlight the open questions that will need to be addressed by future studies to better understand the tissue-specific functions of distinct macrophage subsets.
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Affiliation(s)
- Elvira Mass
- Developmental Biology of the Immune System, Life and Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany.
| | - Falk Nimmerjahn
- Division of Genetics, Department of Biology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Katrin Kierdorf
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Centre for Integrative Biological Signalling Studies, University of Freiburg, Freiburg, Germany
- Centre for Basics in NeuroModulation (NeuroModulBasics), Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Andreas Schlitzer
- Quantitative Systems Biology, Life and Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany
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27
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Rashidfarrokhi A, Pillai R, Hao Y, Wu WL, Karadal-Ferrena B, Dimitriadoy SG, Cross M, Yeaton AH, Huang SM, Bhutkar AJ, Herrera A, Rajalingam S, Hayashi M, Huang KL, Bartnicki E, Zavitsanou AM, Wohlhieter CA, Leboeuf SE, Chen T, Loomis C, Mezzano V, Kulicke R, Davis FP, Stransky N, Smolen GA, Rudin CM, Moreira AL, Khanna KM, Pass HI, Wong KK, Koide S, Tsirigos A, Koralov SB, Papagiannakopoulos T. Tumor-intrinsic LKB1-LIF signaling axis establishes a myeloid niche to promote immune evasion and tumor growth. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.15.549147. [PMID: 37502974 PMCID: PMC10370066 DOI: 10.1101/2023.07.15.549147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Tumor mutations can influence the surrounding microenvironment leading to suppression of anti-tumor immune responses and thereby contributing to tumor progression and failure of cancer therapies. Here we use genetically engineered lung cancer mouse models and patient samples to dissect how LKB1 mutations accelerate tumor growth by reshaping the immune microenvironment. Comprehensive immune profiling of LKB1 -mutant vs wildtype tumors revealed dramatic changes in myeloid cells, specifically enrichment of Arg1 + interstitial macrophages and SiglecF Hi neutrophils. We discovered a novel mechanism whereby autocrine LIF signaling in Lkb1 -mutant tumors drives tumorigenesis by reprogramming myeloid cells in the immune microenvironment. Inhibiting LIF signaling in Lkb1 -mutant tumors, via gene targeting or with a neutralizing antibody, resulted in a striking reduction in Arg1 + interstitial macrophages and SiglecF Hi neutrophils, expansion of antigen specific T cells, and inhibition of tumor progression. Thus, targeting LIF signaling provides a new therapeutic approach to reverse the immunosuppressive microenvironment of LKB1 -mutant tumors.
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28
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Yang M, Ma L, Su R, Guo R, Zhou N, Liu M, Wu J, Wang Y, Hao Y. The Extract of Scutellaria baicalensis Attenuates the Pattern Recognition Receptor Pathway Activation Induced by Influenza A Virus in Macrophages. Viruses 2023; 15:1524. [PMID: 37515209 PMCID: PMC10384909 DOI: 10.3390/v15071524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/23/2023] [Accepted: 06/28/2023] [Indexed: 07/30/2023] Open
Abstract
The dual strategy of inhibiting the viral life cycle and reducing the host inflammatory response should be considered in the development of therapeutic drugs for influenza A virus (IAV). In this study, an extract of Scutellaria baicalinase (SBE) containing seven flavonoids was identified to exert both antiviral and anti-inflammatory effects in macrophages infected with IAV. We performed transcriptome analysis using high-throughput RNA sequencing and identified 315 genes whose transcription levels were increased after IAV infection but were able to be decreased after SBE intervention. Combined with Gene Ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analysis, these genes were mainly involved in TLR3/7/8, RIG-I/MDA5, NLRP3 and cGAS pattern recognition receptor (PRR)-mediated signaling pathways. SBE inhibited the transcription of essential genes in the above pathways and nuclear translocation of NF-κB p65 as confirmed by RT-qPCR and immunofluorescence, respectively, indicating that SBE reversed PR8-induced over-activation of the PRR signaling pathway and inflammation in macrophages. This study provides an experimental basis for applying Scutellaria baicalensis and its main effects in the clinical treatment of viral pneumonia. It also provides novel targets for screening and developing novel drugs to prevent and treat IAV infectious diseases.
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Affiliation(s)
- Mingrui Yang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Luyao Ma
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Rina Su
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Rui Guo
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Na Zhou
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Menghua Liu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Jun Wu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Yi Wang
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yu Hao
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
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29
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Zhang J, Song J, Tang S, Zhao Y, Wang L, Luo Y, Tang J, Ji Y, Wang X, Li T, Zhang H, Shao W, Sheng J, Liang T, Bai X. Multi-omics analysis reveals the chemoresistance mechanism of proliferating tissue-resident macrophages in PDAC via metabolic adaptation. Cell Rep 2023; 42:112620. [PMID: 37285267 DOI: 10.1016/j.celrep.2023.112620] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 04/16/2023] [Accepted: 05/23/2023] [Indexed: 06/09/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a highly lethal cancer that typically demonstrates resistance to chemotherapy. Tumor-associated macrophages (TAMs) are essential in tumor microenvironment (TME) regulation, including promoting chemoresistance. However, the specific TAM subset and mechanisms behind this promotion remain unclear. We employ multi-omics strategies, including single-cell RNA sequencing (scRNA-seq), transcriptomics, multicolor immunohistochemistry (mIHC), flow cytometry, and metabolomics, to analyze chemotherapy-treated samples from both humans and mice. We identify four major TAM subsets within PDAC, among which proliferating resident macrophages (proliferating rMφs) are strongly associated with poor clinical outcomes. These macrophages are able to survive chemotherapy by producing more deoxycytidine (dC) and fewer dC kinases (dCKs) to decrease the absorption of gemcitabine. Moreover, proliferating rMφs promote fibrosis and immunosuppression in PDAC. Eliminating them in the transgenic mouse model alleviates fibrosis and immunosuppression, thereby re-sensitizing PDAC to chemotherapy. Consequently, targeting proliferating rMφs may become a potential treatment strategy for PDAC to enhance chemotherapy.
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Affiliation(s)
- Junlei Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China
| | - Jinyuan Song
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China
| | - Shima Tang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China
| | - Yaxing Zhao
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China
| | - Lin Wang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China
| | - Yandong Luo
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China
| | - Jianghui Tang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China
| | - Yongtao Ji
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China
| | - Xun Wang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China
| | - Taohong Li
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China
| | - Hui Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China
| | - Wei Shao
- College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210000, China.
| | - Jianpeng Sheng
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China.
| | - Tingbo Liang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China.
| | - Xueli Bai
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310002, China; Zhejiang University Cancer Center, Zhejiang University, Hangzhou 310002, China.
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30
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Bee GCW, Lokken-Toyli KL, Yeung ST, Rodriguez L, Zangari T, Anderson EE, Ghosh S, Rothlin CV, Brodin P, Khanna KM, Weiser JN. Age-dependent differences in efferocytosis determine the outcome of opsonophagocytic protection from invasive pathogens. Immunity 2023; 56:1255-1268.e5. [PMID: 37059107 PMCID: PMC10330046 DOI: 10.1016/j.immuni.2023.03.018] [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: 09/26/2022] [Revised: 12/22/2022] [Accepted: 03/21/2023] [Indexed: 04/16/2023]
Abstract
In early life, susceptibility to invasive infection skews toward a small subset of microbes, whereas other pathogens associated with diseases later in life, including Streptococcus pneumoniae (Spn), are uncommon among neonates. To delineate mechanisms behind age-dependent susceptibility, we compared age-specific mouse models of invasive Spn infection. We show enhanced CD11b-dependent opsonophagocytosis by neonatal neutrophils improved protection against Spn during early life. The augmented function of neonatal neutrophils was mediated by higher CD11b surface expression at the population level due to dampened efferocytosis, which also resulted in more CD11bhi "aged" neutrophils in peripheral blood. Dampened efferocytosis during early life could be attributed to the lack of CD169+ macrophages in neonates and reduced systemic expressions of multiple efferocytic mediators, including MerTK. On experimentally impairing efferocytosis later in life, CD11bhi neutrophils increased and protection against Spn improved. Our findings reveal how age-dependent differences in efferocytosis determine infection outcome through the modulation of CD11b-driven opsonophagocytosis and immunity.
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Affiliation(s)
- Gavyn Chern Wei Bee
- Department of Microbiology, New York University Grossman School of Medicine, New York, USA.
| | - Kristen L Lokken-Toyli
- Department of Microbiology, New York University Grossman School of Medicine, New York, USA
| | - Stephen T Yeung
- Department of Microbiology, New York University Grossman School of Medicine, New York, USA
| | - Lucie Rodriguez
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Tonia Zangari
- Department of Microbiology, New York University Grossman School of Medicine, New York, USA
| | - Exene E Anderson
- Department of Microbiology, New York University Grossman School of Medicine, New York, USA
| | - Sourav Ghosh
- Department of Pharmacology, Yale School of Medicine, New Haven, CT, USA; Department of Neurology, Yale School of Medicine, New Haven, CT, USA
| | - Carla V Rothlin
- Department of Pharmacology, Yale School of Medicine, New Haven, CT, USA; Department of Immunobiology, Yale School of Medicine, New Haven, CT, USA
| | - Petter Brodin
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden; Department of Immunology & Inflammation, Imperial College London, London, UK
| | - Kamal M Khanna
- Department of Microbiology, New York University Grossman School of Medicine, New York, USA; Laura & Isaac Perlmutter Cancer Center, New York University Langone Health, New York, NY, USA
| | - Jeffrey N Weiser
- Department of Microbiology, New York University Grossman School of Medicine, New York, USA.
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31
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McGrath-Morrow SA, Venezia J, Ndeh R, Michki N, Perez J, Singer BD, Cimbro R, Soloski M, Scott AL. Cellular and molecular dynamics in the lungs of neonatal and juvenile mice in response to E. coli. eLife 2023; 12:e82933. [PMID: 37266566 PMCID: PMC10264069 DOI: 10.7554/elife.82933] [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: 08/24/2022] [Accepted: 06/01/2023] [Indexed: 06/03/2023] Open
Abstract
Bacterial pneumonia in neonates can cause significant morbidity and mortality when compared to other childhood age groups. To understand the immune mechanisms that underlie these age-related differences, we employed a mouse model of Escherichia coli pneumonia to determine the dynamic cellular and molecular differences in immune responsiveness between neonates (PND 3-5) and juveniles (PND 12-18), at 24, 48, and 72 hr. Cytokine gene expression from whole lung extracts was also quantified at these time points, using quantitative RT-PCR. E. coli challenge resulted in rapid and significant increases in neutrophils, monocytes, and γδT cells, along with significant decreases in dendritic cells and alveolar macrophages in the lungs of both neonates and juveniles. E. coli-challenged juvenile lung had significant increases in interstitial macrophages and recruited monocytes that were not observed in neonatal lungs. Expression of IFNγ-responsive genes was positively correlated with the levels and dynamics of MHCII-expressing innate cells in neonatal and juvenile lungs. Several facets of immune responsiveness in the wild-type neonates were recapitulated in juvenile MHCII-/- juveniles. Employing a pre-clinical model of E. coli pneumonia, we identified significant differences in the early cellular and molecular dynamics in the lungs that likely contribute to the elevated susceptibility of neonates to bacterial pneumonia and could represent targets for intervention to improve respiratory outcomes and survivability of neonates.
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Affiliation(s)
- Sharon A McGrath-Morrow
- Children's Hospital of Philadelphia Division of Pulmonary Medicine and SleepPhiladelphiaUnited States
| | - Jarrett Venezia
- W Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public HealthBaltimoreUnited States
| | - Roland Ndeh
- Children's Hospital of Philadelphia Division of Pulmonary Medicine and SleepPhiladelphiaUnited States
| | - Nigel Michki
- Children's Hospital of Philadelphia Division of Pulmonary Medicine and SleepPhiladelphiaUnited States
| | - Javier Perez
- Children's Hospital of Philadelphia Division of Pulmonary Medicine and SleepPhiladelphiaUnited States
| | - Benjamin David Singer
- Division of Pulmonary and Critical Care Medicine, Department of Medicine Northwestern, University Feinberg School of MedicineChicagoUnited States
| | - Raffaello Cimbro
- Department of Medicine, Division of Rheumatology, Johns Hopkins University, School of MedicineBaltimoreUnited States
| | - Mark Soloski
- Department of Medicine, Division of Rheumatology, Johns Hopkins University, School of MedicineBaltimoreUnited States
| | - Alan L Scott
- W Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public HealthBaltimoreUnited States
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Strickland AB, Chen Y, Sun D, Shi M. Alternatively activated lung alveolar and interstitial macrophages promote fungal growth. iScience 2023; 26:106717. [PMID: 37216116 PMCID: PMC10193231 DOI: 10.1016/j.isci.2023.106717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/03/2023] [Accepted: 04/18/2023] [Indexed: 05/24/2023] Open
Abstract
How lung macrophages, especially interstitial macrophages (IMs), respond to invading pathogens remains elusive. Here, we show that mice exhibited a rapid and substantial expansion of macrophages, especially CX3CR1+ IMs, in the lung following infection with Cryptococcus neoformans, a pathogenic fungus leading to high mortality among patients with HIV/AIDS. The IM expansion correlated with enhanced CSF1 and IL-4 production and was affected by the deficiency of CCR2 or Nr4a1. Both alveolar macrophages (AMs) and IMs were observed to harbor C. neoformans and became alternatively activated following infection, with IMs being more polarized. The absence of AMs by genetically disrupting CSF2 signaling reduced fungal loads in the lung and prolonged the survival of infected mice. Likewise, infected mice depleted of IMs by the CSF1 receptor inhibitor PLX5622 displayed significantly lower pulmonary fungal burdens. Thus, C. neoformans infection induces alternative activation of both AMs and IMs, which facilitates fungal growth in the lung.
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Affiliation(s)
- Ashley B. Strickland
- Division of Immunology, Virginia-Maryland College of Veterinary Medicine, Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20742, USA
| | - Yanli Chen
- Division of Immunology, Virginia-Maryland College of Veterinary Medicine, Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20742, USA
| | - Donglei Sun
- Division of Immunology, Virginia-Maryland College of Veterinary Medicine, Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20742, USA
| | - Meiqing Shi
- Division of Immunology, Virginia-Maryland College of Veterinary Medicine, Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20742, USA
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T'Jonck W, Bain CC. The role of monocyte-derived macrophages in the lung: it's all about context. Int J Biochem Cell Biol 2023; 159:106421. [PMID: 37127181 DOI: 10.1016/j.biocel.2023.106421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/24/2023] [Accepted: 04/28/2023] [Indexed: 05/03/2023]
Abstract
Macrophages are present in every tissue of the body where they play crucial roles in maintaining tissue homeostasis and providing front line defence against pathogens. Arguably, this is most important at mucosal barrier tissues, such as the lung and gut, which are major ports of entry for pathogens. However, a common feature of inflammation, infection or injury is the loss of tissue resident macrophages and accumulation of monocytes from the circulation, which differentiate, to different extents, into macrophages. The exact fate and function of these elicited, monocyte-derived macrophages in infection, injury and inflammation remains contentious. While some studies have documented the indispensable nature of monocytes and their macrophage derivatives in combatting infection and restoration of lung homeostasis following insult, observations from clinical studies and preclinical models of lung infection/injury shows that monocytes and their progeny can become dysregulated in severe pathology, often perpetuating rather than resolving the insult. In this Mini Review, we aim to bring together these somewhat contradictory reports by discussing how the plasticity of monocytes allow them to assume distinct functions in different contexts in the lung, from health to infection, and effective tissue repair to fibrotic disease.
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Affiliation(s)
- Wouter T'Jonck
- University of Edinburgh Centre for Inflammation Research, Queen's Medical Research Institute, Edinburgh BioQuarter, EH16 4TJ, U.K; Institute for Regeneration and Repair, University of Edinburgh, Edinburgh BioQuarter
| | - Calum C Bain
- University of Edinburgh Centre for Inflammation Research, Queen's Medical Research Institute, Edinburgh BioQuarter, EH16 4TJ, U.K; Institute for Regeneration and Repair, University of Edinburgh, Edinburgh BioQuarter
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Upadhyay AA, Viox EG, Hoang TN, Boddapati AK, Pino M, Lee MYH, Corry J, Strongin Z, Cowan DA, Beagle EN, Horton TR, Hamilton S, Aoued H, Harper JL, Edwards CT, Nguyen K, Pellegrini KL, Tharp GK, Piantadosi A, Levit RD, Amara RR, Barratt-Boyes SM, Ribeiro SP, Sekaly RP, Vanderford TH, Schinazi RF, Paiardini M, Bosinger SE. TREM2 + and interstitial-like macrophages orchestrate airway inflammation in SARS-CoV-2 infection in rhesus macaques. Nat Commun 2023; 14:1914. [PMID: 37024448 PMCID: PMC10078029 DOI: 10.1038/s41467-023-37425-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 03/16/2023] [Indexed: 04/08/2023] Open
Abstract
The immunopathological mechanisms driving the development of severe COVID-19 remain poorly defined. Here, we utilize a rhesus macaque model of acute SARS-CoV-2 infection to delineate perturbations in the innate immune system. SARS-CoV-2 initiates a rapid infiltration of plasmacytoid dendritic cells into the lower airway, commensurate with IFNA production, natural killer cell activation, and a significant increase of blood CD14-CD16+ monocytes. To dissect the contribution of lung myeloid subsets to airway inflammation, we generate a longitudinal scRNA-Seq dataset of airway cells, and map these subsets to corresponding populations in the human lung. SARS-CoV-2 infection elicits a rapid recruitment of two macrophage subsets: CD163+MRC1-, and TREM2+ populations that are the predominant source of inflammatory cytokines. Treatment with baricitinib (Olumiant®), a JAK1/2 inhibitor is effective in eliminating the influx of non-alveolar macrophages, with a reduction of inflammatory cytokines. This study delineates the major lung macrophage subsets driving airway inflammation during SARS-CoV-2 infection.
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Affiliation(s)
- Amit A Upadhyay
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Elise G Viox
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Timothy N Hoang
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Arun K Boddapati
- Emory NPRC Genomics Core Laboratory, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Maria Pino
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Michelle Y-H Lee
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Jacqueline Corry
- Department of Infectious Diseases and Microbiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Zachary Strongin
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - David A Cowan
- Emory NPRC Genomics Core Laboratory, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Elizabeth N Beagle
- Emory NPRC Genomics Core Laboratory, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Tristan R Horton
- Emory NPRC Genomics Core Laboratory, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Sydney Hamilton
- Emory NPRC Genomics Core Laboratory, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Hadj Aoued
- Emory NPRC Genomics Core Laboratory, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Justin L Harper
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Christopher T Edwards
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Kevin Nguyen
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Kathryn L Pellegrini
- Emory NPRC Genomics Core Laboratory, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Gregory K Tharp
- Emory NPRC Genomics Core Laboratory, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Anne Piantadosi
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | - Rebecca D Levit
- Department of Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | - Rama R Amara
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
- Department of Microbiology and Immunology, Emory School of Medicine, Emory University, Atlanta, GA, USA
| | - Simon M Barratt-Boyes
- Department of Infectious Diseases and Microbiology, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Susan P Ribeiro
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | - Rafick P Sekaly
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | - Thomas H Vanderford
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Raymond F Schinazi
- Department of Pediatrics, School of Medicine, Emory University and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Mirko Paiardini
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA.
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA.
| | - Steven E Bosinger
- Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, GA, USA.
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA.
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Rodriguez-Rodriguez L, Gillet L, Machiels B. Shaping of the alveolar landscape by respiratory infections and long-term consequences for lung immunity. Front Immunol 2023; 14:1149015. [PMID: 37081878 PMCID: PMC10112541 DOI: 10.3389/fimmu.2023.1149015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/15/2023] [Indexed: 04/07/2023] Open
Abstract
Respiratory infections and especially viral infections, along with other extrinsic environmental factors, have been shown to profoundly affect macrophage populations in the lung. In particular, alveolar macrophages (AMs) are important sentinels during respiratory infections and their disappearance opens a niche for recruited monocytes (MOs) to differentiate into resident macrophages. Although this topic is still the focus of intense debate, the phenotype and function of AMs that recolonize the niche after an inflammatory insult, such as an infection, appear to be dictated in part by their origin, but also by local and/or systemic changes that may be imprinted at the epigenetic level. Phenotypic alterations following respiratory infections have the potential to shape lung immunity for the long-term, leading to beneficial responses such as protection against allergic airway inflammation or against other infections, but also to detrimental responses when associated with the development of immunopathologies. This review reports the persistence of virus-induced functional alterations in lung macrophages, and discusses the importance of this imprinting in explaining inter-individual and lifetime immune variation.
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36
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Moore PK, Anderson KC, McManus SA, Tu TH, King EM, Mould KJ, Redente EF, Henson PM, Janssen WJ, McCubbrey AL. Single-cell RNA sequencing reveals unique monocyte-derived interstitial macrophage subsets during lipopolysaccharide-induced acute lung inflammation. Am J Physiol Lung Cell Mol Physiol 2023; 324:L536-L549. [PMID: 36852927 PMCID: PMC10069979 DOI: 10.1152/ajplung.00223.2022] [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: 07/18/2022] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 03/01/2023] Open
Abstract
Interstitial macrophages (IMs) reside in the lung tissue surrounding key structures including airways, vessels, and alveoli. Recent work has described IM heterogeneity during homeostasis, however, there are limited data on IMs during inflammation. We sought to characterize IM origin, subsets, and transcriptomic profiles during homeostasis and lipopolysaccharide (LPS) induced acute lung inflammation. During homeostasis, we used three complementary methods, spectral flow cytometry, single-cell RNA-sequencing, and gene regulatory network enrichment, to demonstrate that IMs can be divided into two core subsets distinguished by surface and transcriptional expression of folate receptor β (Folr2/FRβ). These subsets inhabited distinct niches within the lung interstitium. Within FRβ+ IMs we identified a subpopulation marked by coexpression of LYVE1. During acute LPS-induced inflammation, lung IM numbers expand. Lineage tracing revealed IM expansion was due to recruitment of monocyte-derived IMs. At the peak of inflammation, recruited IMs were comprised two unique subsets defined by expression of genes associated with interferon signaling and glycolytic pathways. As recruited IMs matured, they adopted the overall transcriptional state of FRβ- resident IMs but retained expression in several origin-specific genes, such as IL-1β. FRβ+ IMs were of near-pure resident origin. Taken together our data show that during LPS-induced inflammation, there are distinct populations of IMs that likely have unique functions. FRΒ+ IMs comprise a stable, resident population, whereas FRβ- ΙΜs represent a mixed population of resident and recruited IMs.
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Affiliation(s)
- Peter K Moore
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| | - Kelsey C Anderson
- Center for Genes, Environment, and Health, National Jewish Health, Denver, Colorado, United States
| | - Shannon A McManus
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| | - Ting-Hui Tu
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| | - Emily M King
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Kara J Mould
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| | - Elizabeth F Redente
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
- Department of Pediatrics, National Jewish Health, Denver, Colorado, United States
| | - Peter M Henson
- Department of Pediatrics, National Jewish Health, Denver, Colorado, United States
- Department of Immunology and Microbiology, University of Colorado, Aurora, Colorado, United States
| | - William J Janssen
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| | - Alexandra L McCubbrey
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
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37
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MafB-restricted local monocyte proliferation precedes lung interstitial macrophage differentiation. Nat Immunol 2023; 24:827-840. [PMID: 36928411 PMCID: PMC10154211 DOI: 10.1038/s41590-023-01468-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 02/15/2023] [Indexed: 03/18/2023]
Abstract
Resident tissue macrophages (RTMs) are differentiated immune cells that populate distinct niches and exert important tissue-supportive functions. RTM maintenance is thought to rely either on differentiation from monocytes or on RTM self-renewal. Here, we used a mouse model of inducible lung interstitial macrophage (IM) niche depletion and refilling to investigate the development of IMs in vivo. Using time-course single-cell RNA-sequencing analyses, bone marrow chimeras and gene targeting, we found that engrafted Ly6C+ classical monocytes proliferated locally in a Csf1 receptor-dependent manner before differentiating into IMs. The transition from monocyte proliferation toward IM subset specification was controlled by the transcription factor MafB, while c-Maf specifically regulated the identity of the CD206+ IM subset. Our data provide evidence that, in the mononuclear phagocyte system, the ability to proliferate is not merely restricted to myeloid progenitor cells and mature RTMs but is also a tightly regulated capability of monocytes developing into RTMs in vivo.
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38
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Yeung ST, Ovando LJ, Russo AJ, Rathinam VA, Khanna KM. CD169+ macrophage intrinsic IL-10 production regulates immune homeostasis during sepsis. Cell Rep 2023; 42:112171. [PMID: 36867536 PMCID: PMC10123955 DOI: 10.1016/j.celrep.2023.112171] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 09/23/2022] [Accepted: 02/10/2023] [Indexed: 03/04/2023] Open
Abstract
Macrophages facilitate critical functions in regulating pathogen clearance and immune homeostasis in tissues. The remarkable functional diversity exhibited by macrophage subsets is dependent on tissue environment and the nature of the pathological insult. Our current knowledge of the mechanisms that regulate the multifaceted counter-inflammatory responses mediated by macrophages remains incomplete. Here, we report that CD169+ macrophage subsets are necessary for protection under excessive inflammatory conditions. We show that in the absence of these macrophages, even under mild septic conditions, mice fail to survive and exhibit increased production of inflammatory cytokines. Mechanistically, CD169+ macrophages control inflammatory responses via interleukin-10 (IL-10), as CD169+ macrophage-specific deletion of IL-10 was lethal during septic conditions, and recombinant IL-10 treatment reduced lipopolysaccharide (LPS)-induced lethality in mice lacking CD169+ macrophages. Collectively, our findings show a pivotal homeostatic role for CD169+ macrophages and suggest they may serve as an important target for therapy under damaging inflammatory conditions.
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Affiliation(s)
- Stephen T Yeung
- Department of Microbiology, New York University Langone School of Medicine, New York, NY 10016, USA
| | - Luis J Ovando
- Department of Microbiology, New York University Langone School of Medicine, New York, NY 10016, USA
| | - Ashley J Russo
- Department of Immunology, UConn Health School of Medicine, Farmington, CT 06032, USA
| | - Vijay A Rathinam
- Department of Immunology, UConn Health School of Medicine, Farmington, CT 06032, USA
| | - Kamal M Khanna
- Department of Microbiology, New York University Langone School of Medicine, New York, NY 10016, USA; Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA.
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39
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Korkmaz FT, Traber KE. Innate immune responses in pneumonia. Pneumonia (Nathan) 2023; 15:4. [PMID: 36829255 PMCID: PMC9957695 DOI: 10.1186/s41479-023-00106-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 01/05/2023] [Indexed: 02/26/2023] Open
Abstract
The lungs are an immunologically unique environment; they are exposed to innumerable pathogens and particulate matter daily. Appropriate clearance of pathogens and response to pollutants is required to prevent overwhelming infection, while preventing tissue damage and maintaining efficient gas exchange. Broadly, the innate immune system is the collection of immediate, intrinsic immune responses to pathogen or tissue injury. In this review, we will examine the innate immune responses of the lung, with a particular focus on their role in pneumonia. We will discuss the anatomic barriers and antimicrobial proteins of the lung, pathogen and injury recognition, and the role of leukocytes (macrophages, neutrophils, and innate lymphocytes) and lung stromal cells in innate immunity. Throughout the review, we will focus on new findings in innate immunity as well as features that are unique to the lung.
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Affiliation(s)
- Filiz T Korkmaz
- Department of Medicine, Division of Immunology & Infectious Disease, University of Massachusetts, Worcester, MA, USA
- Pulmonary Center, Boston University School of Medicine, Boston, MA, USA
| | - Katrina E Traber
- Pulmonary Center, Boston University School of Medicine, Boston, MA, USA.
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA.
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40
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Heim TA, Lin Z, Steele MM, Mudianto T, Lund AW. CXCR6 promotes dermal CD8 + T cell survival and transition to long-term tissue residence. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.14.528487. [PMID: 36824892 PMCID: PMC9949075 DOI: 10.1101/2023.02.14.528487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Tissue resident memory T cells (TRM) provide important protection against infection, and yet the interstitial signals necessary for their formation and persistence remain incompletely understood. Here we show that antigen-dependent induction of the chemokine receptor, CXCR6, is a conserved requirement for TRM formation in peripheral tissue after viral infection. CXCR6 was dispensable for the early accumulation of antigen-specific CD8+ T cells in skin and did not restrain their exit. Single cell sequencing indicated that CXCR6-/- CD8+ T cells were also competent to acquire a transcriptional program of residence but exhibited deficiency in multiple pathways that converged on survival and metabolic signals necessary for memory. As such, CXCR6-/- CD8+ T cells exhibited increased rates of apoptosis relative to controls in the dermis, leading to inefficient TRM formation. CXCR6 expression may therefore represent a common mechanism across peripheral non-lymphoid tissues and inflammatory states that increases the probability of long-term residence.
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Affiliation(s)
- Taylor A. Heim
- Ronald O. Perelman Department of Dermatology, NYU Grossman School of Medicine, New York, NY, USA
| | - Ziyan Lin
- Applied Bioinformatics Laboratories, NYU Langone Health, New York, NY, USA
| | - Maria M. Steele
- Ronald O. Perelman Department of Dermatology, NYU Grossman School of Medicine, New York, NY, USA
- Department of Cell, Developmental & Cancer Biology and Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - Tenny Mudianto
- Ronald O. Perelman Department of Dermatology, NYU Grossman School of Medicine, New York, NY, USA
| | - Amanda W. Lund
- Ronald O. Perelman Department of Dermatology, NYU Grossman School of Medicine, New York, NY, USA
- Department of Cell, Developmental & Cancer Biology and Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
- Department of Pathology, NYU Grossman School of Medicine, New York, NY, USA
- Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, New York, NY, USA
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41
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Song X, Hu W, Yu H, Zhao L, Zhao Y, Zhao X, Xue HH, Zhao Y. Little to no expression of angiotensin-converting enzyme-2 on most human peripheral blood immune cells but highly expressed on tissue macrophages. Cytometry A 2023; 103:136-145. [PMID: 33280254 DOI: 10.1002/cyto.a.24285] [Citation(s) in RCA: 74] [Impact Index Per Article: 74.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/21/2020] [Accepted: 11/30/2020] [Indexed: 02/06/2023]
Abstract
Angiotensin-converting enzyme-2 (ACE2) has been recognized as the binding receptor for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Flow cytometry demonstrated that there was little to no expression of ACE2 on most of the human peripheral blood-derived immune cells including CD4+ T, CD8+ T, activated CD4+ /CD8+ T, Tregs, Th17, NKT, B, NK cells, monocytes, dendritic cells, and granulocytes. There was no ACE2 expression on platelets and very low level of ACE2 protein expression on the surface of human primary pulmonary alveolar epithelial cells. The ACE2 expression was markedly upregulated on the activated type 1 macrophages (M1). Immunohistochemistry demonstrated high expressions of ACE2 on human tissue macrophages, such as alveolar macrophages, Kupffer cells within livers, and microglial cells in brain at steady state. The data suggest that alveolar macrophages, as the frontline immune cells, may be directly targeted by the SARS-CoV-2 infection and therefore need to be considered for the prevention and treatment of COVID-19.
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Affiliation(s)
- Xiang Song
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey, USA
| | - Wei Hu
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey, USA
| | - Haibo Yu
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey, USA
| | - Laura Zhao
- Tianhe Stem Cell Biotechnologies Inc., Paramus, New Jersey, USA
| | - Yeqian Zhao
- Tianhe Stem Cell Biotechnologies Inc., Paramus, New Jersey, USA
| | - Xin Zhao
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey, USA
| | - Hai-Hui Xue
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey, USA
| | - Yong Zhao
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey, USA
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42
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Sabatel C, Bureau F. The innate immune brakes of the lung. Front Immunol 2023; 14:1111298. [PMID: 36776895 PMCID: PMC9915150 DOI: 10.3389/fimmu.2023.1111298] [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: 11/29/2022] [Accepted: 01/02/2023] [Indexed: 01/29/2023] Open
Abstract
Respiratory mucosal surfaces are continuously exposed to not only innocuous non-self antigens but also pathogen-associated molecular patterns (PAMPs) originating from environmental or symbiotic microbes. According to either "self/non-self" or "danger" models, this should systematically result in homeostasis breakdown and the development of immune responses directed to inhaled harmless antigens, such as T helper type (Th)2-mediated asthmatic reactions, which is fortunately not the case in most people. This discrepancy implies the existence, in the lung, of regulatory mechanisms that tightly control immune homeostasis. Although such mechanisms have been poorly investigated in comparison to the ones that trigger immune responses, a better understanding of them could be useful in the development of new therapeutic strategies against lung diseases (e.g., asthma). Here, we review current knowledge on innate immune cells that prevent the development of aberrant immune responses in the lung, thereby contributing to mucosal homeostasis.
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Affiliation(s)
- Catherine Sabatel
- Laboratory of Cellular and Molecular Immunology, GIGA-Research, University of Liège, Liège, Belgium,Faculty of Veterinary Medicine, University of Liège, Liège, Belgium,*Correspondence: Catherine Sabatel,
| | - Fabrice Bureau
- Laboratory of Cellular and Molecular Immunology, GIGA-Research, University of Liège, Liège, Belgium,Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
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Guan T, Zhou X, Zhou W, Lin H. Regulatory T cell and macrophage crosstalk in acute lung injury: future perspectives. Cell Death Dis 2023; 9:9. [PMID: 36646692 PMCID: PMC9841501 DOI: 10.1038/s41420-023-01310-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 01/18/2023]
Abstract
Acute lung injury (ALI) describes the injury to endothelial cells in the lungs and associated vessels due to various factors. Furthermore, ALI accompanied by inflammation and thrombosis has been reported as a common complication of SARS-COV-2 infection. It is widely accepted that inflammation and the cytokine storm are main causes of ALI. Two classical anti-inflammatory cell types, regulatory T cells (Tregs) and M2 macrophages, are theoretically capable of resisting uncontrolled inflammation. Recent studies have indicated possible crosstalk between Tregs and macrophages involving their mutual activation. In this review, we discuss the current findings related to ALI pathogenesis and the role of Tregs and macrophages. In particular, we review the molecular mechanisms underlying the crosstalk between Tregs and macrophages in ALI pathogenesis. Understanding the role of Tregs and macrophages will provide the potential targets for treating ALI.
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Affiliation(s)
- Tianshu Guan
- grid.260463.50000 0001 2182 8825Department of Pathophysiology, School of Basic Medical Sciences, Nanchang University, 330006 Nanchang, Jiangxi China ,grid.260463.50000 0001 2182 8825Queen Mary university, Nanchang University, 330006 Nanchang, Jiangxi Province China
| | - Xv Zhou
- grid.260463.50000 0001 2182 8825Department of Pathophysiology, School of Basic Medical Sciences, Nanchang University, 330006 Nanchang, Jiangxi China ,grid.260463.50000 0001 2182 8825Queen Mary university, Nanchang University, 330006 Nanchang, Jiangxi Province China
| | - Wenwen Zhou
- grid.260463.50000 0001 2182 8825Department of Pathophysiology, School of Basic Medical Sciences, Nanchang University, 330006 Nanchang, Jiangxi China
| | - Hui Lin
- grid.260463.50000 0001 2182 8825Department of Pathophysiology, School of Basic Medical Sciences, Nanchang University, 330006 Nanchang, Jiangxi China
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Li N, Li Z, Fang F, Zhu C, Zhang W, Lu Y, Zhang R, Si P, Bian Y, Qin Y, Jiao X. Two distinct resident macrophage populations coexist in the ovary. Front Immunol 2022; 13:1007711. [PMID: 36605192 PMCID: PMC9810109 DOI: 10.3389/fimmu.2022.1007711] [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: 07/30/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction Tissue-resident macrophages (TRMs) are highly heterogeneous and have a complex and important role in tissue support, homeostasis, and function. The heterogeneity, maintenance, and function of TRMs, as one of the major immune cells in the ovary, are not well understood. Methods Application of flow cytometry, Parabiosis, Fate mapping, Macrophage depletion, etc. Results Here, we described two distinct macrophage subsets, F4/80hiCD11bint and F4/80intCD11bhi, with different phenotypic characteristics in the ovary of mice. The F4/80hiCD11bint population contained a distinct CD206+ subgroup and highly expressed CD81, while the F4/80intCD11bhi subset showed higher expression of CCR2 and TLR2. Notably, Ly6c+ macrophages were present almost exclusively in the F4/80intCD11bhi subpopulation. Combining in vivo fate mapping and parabiotic mouse models, we characterized the longevity and replenishment of the two macrophage populations. We found that both the F4/80hiCD11bint and F4/80intCD11bhi subsets were ovary-resident. Importantly, the F4/80hiCD11bint macrophages acted as a self-maintaining and long-lived population with a modest monocyte contribution at a steady state, and the F4/80intCD11bhi subpopulation had a relatively short lifespan with a greater contribution from monocytes. After macrophage ablation, disturbance of estradiol secretion and ovarian hemorrhage due to damaged vascular integrity was observed in mice. Discussion Our data provide critical insights into ovarian macrophage heterogeneity and highlight the strategic role of TRMs in ovarian homeostasis and physiology.
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Affiliation(s)
- Nianyu Li
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China
| | - Zhuqing Li
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China
| | - Fang Fang
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China
| | - Chendi Zhu
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China
| | - Wenzhe Zhang
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China
| | - Yueshuang Lu
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China
| | - Rongrong Zhang
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China
| | - Pinxin Si
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China
| | - Yuehong Bian
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China
| | - Yingying Qin
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China
| | - Xue Jiao
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China,Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China,Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China,Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China,Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong, China,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong, China,Suzhou Institute of Shandong University, Suzhou, Jiangsu, China,*Correspondence: Xue Jiao,
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Alivernini S, Firestein GS, McInnes IB. The pathogenesis of rheumatoid arthritis. Immunity 2022; 55:2255-2270. [PMID: 36516818 DOI: 10.1016/j.immuni.2022.11.009] [Citation(s) in RCA: 66] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/20/2022] [Accepted: 11/17/2022] [Indexed: 12/15/2022]
Abstract
Significant recent progress in understanding rheumatoid arthritis (RA) pathogenesis has led to improved treatment and quality of life. The introduction of targeted-biologic and -synthetic disease modifying anti-rheumatic drugs (DMARDs) has also transformed clinical outcomes. Despite this, RA remains a life-long disease without a cure. Unmet needs include partial response and non-response to treatment in many patients, failure to achieve immune homeostasis or drug free remission, and inability to repair damaged tissues. RA is now recognized as the end of a multi-year prodromal phase in which systemic immune dysregulation, likely beginning in mucosal surfaces, is followed by a symptomatic clinical phase. Inflammation and immune reactivity are primarily localized to the synovium leading to pain and articular damage, but is also associated with a broader series of comorbidities. Here, we review recently described immunologic mechanisms that drive breach of tolerance, chronic synovitis, and remission.
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Affiliation(s)
- Stefano Alivernini
- Immunology Research Core Facility, Gemelli Science and Technology Park, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Division of Rheumatology - Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Rome, Italy
| | - Gary S Firestein
- Division of Rheumatology, Allergy, and Immunology, University of California San Diego School of Medicine, La Jolla, CA 92093, USA
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46
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Immune cell interactions in tuberculosis. Cell 2022; 185:4682-4702. [PMID: 36493751 DOI: 10.1016/j.cell.2022.10.025] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/15/2022] [Accepted: 10/26/2022] [Indexed: 12/13/2022]
Abstract
Despite having been identified as the organism that causes tuberculosis in 1882, Mycobacterium tuberculosis has managed to still evade our understanding of the protective immune response against it, defying the development of an effective vaccine. Technology and novel experimental models have revealed much new knowledge, particularly with respect to the heterogeneity of the bacillus and the host response. This review focuses on certain immunological elements that have recently yielded exciting data and highlights the importance of taking a holistic approach to understanding the interaction of M. tuberculosis with the many host cells that contribute to the development of protective immunity.
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47
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Qian X, Meng X, Zhang S, Zeng W. Neuroimmune regulation of white adipose tissues. FEBS J 2022; 289:7830-7853. [PMID: 34564950 DOI: 10.1111/febs.16213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 08/21/2021] [Accepted: 09/24/2021] [Indexed: 01/14/2023]
Abstract
The white adipose tissues (WAT) are located in distinct depots throughout the body. They serve as an energy reserve, providing fatty acids for other tissues via lipolysis when needed, and function as an endocrine organ to regulate systemic metabolism. Their activities are coordinated through intercellular communications among adipocytes and other cell types such as residential and infiltrating immune cells, which are collectively under neuronal control. The adipocytes and immune subtypes including macrophages/monocytes, eosinophils, neutrophils, group 2 innate lymphoid cells (ILC2s), T and B cells, dendritic cells (DCs), and natural killer (NK) cells display cellular and functional diversity in response to the energy states and contribute to metabolic homeostasis and pathological conditions. Accumulating evidence reveals that neuronal innervations control lipid deposition and mobilization via regulating lipolysis, adipocyte size, and cellularity. Vice versa, the neuronal innervations and activity are influenced by cellular factors in the WAT. Though the literature describing adipose tissue cells is too extensive to cover in detail, we strive to highlight a selected list of neuronal and immune components in this review. The cell-to-cell communications and the perspective of neuroimmune regulation are emphasized to enlighten the potential therapeutic opportunities for treating metabolic disorders.
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Affiliation(s)
- Xinmin Qian
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing, China.,Tsinghua-Peking Center for Life Sciences, Beijing, China
| | - Xia Meng
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing, China.,Tsinghua-Peking Center for Life Sciences, Beijing, China
| | - Shan Zhang
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing, China.,Tsinghua-Peking Center for Life Sciences, Beijing, China
| | - Wenwen Zeng
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing, China.,Tsinghua-Peking Center for Life Sciences, Beijing, China.,Beijing Key Laboratory for Immunological Research on Chronic Diseases, Beijing, China
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48
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Dang W, Tao Y, Xu X, Zhao H, Zou L, Li Y. The role of lung macrophages in acute respiratory distress syndrome. Inflamm Res 2022; 71:1417-1432. [PMID: 36264361 PMCID: PMC9582389 DOI: 10.1007/s00011-022-01645-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 07/22/2022] [Accepted: 09/14/2022] [Indexed: 11/25/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is an acute and diffuse inflammatory lung injury in a short time, one of the common severe manifestations of the respiratory system that endangers human life and health. As an innate immune cell, macrophages play a key role in the inflammatory response. For a long time, the role of pulmonary macrophages in ARDS has tended to revolve around the polarization of M1/M2. However, with the development of single-cell RNA sequencing, fate mapping, metabolomics, and other new technologies, a deeper understanding of the development process, classification, and function of macrophages in the lung are acquired. Here, we discuss the function of pulmonary macrophages in ARDS from the two dimensions of anatomical location and cell origin and describe the effects of cell metabolism and intercellular interaction on the function of macrophages. Besides, we explore the treatments for targeting macrophages, such as enhancing macrophage phagocytosis, regulating macrophage recruitment, and macrophage death. Considering the differences in responsiveness of different research groups to these treatments and the tremendous dynamic changes in the gene expression of monocyte/macrophage, we discussed the possibility of characterizing the gene expression of monocyte/macrophage as the biomarkers. We hope that this review will provide new insight into pulmonary macrophage function and therapeutic targets of ARDS.
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Affiliation(s)
- Wenpei Dang
- Department of Intensive Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
- Department of Emergency, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Yiming Tao
- Department of Intensive Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
- Department of Emergency, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Xinxin Xu
- Department of Intensive Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
- Department of Emergency, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Hui Zhao
- Department of Intensive Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
- Department of Emergency, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Lijuan Zou
- Department of Intensive Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
- Department of Emergency, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Yongsheng Li
- Department of Intensive Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China.
- Department of Emergency, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China.
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Inhaled particulate accumulation with age impairs immune function and architecture in human lung lymph nodes. Nat Med 2022; 28:2622-2632. [PMID: 36411343 PMCID: PMC9835154 DOI: 10.1038/s41591-022-02073-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 10/03/2022] [Indexed: 11/22/2022]
Abstract
Older people are particularly susceptible to infectious and neoplastic diseases of the lung and it is unclear how lifelong exposure to environmental pollutants affects respiratory immune function. In an analysis of human lymph nodes (LNs) from 84 organ donors aged 11-93 years, we found a specific age-related decline in lung-associated, but not gut-associated, LN immune function linked to the accumulation of inhaled atmospheric particulate matter. Increasing densities of particulates were found in lung-associated LNs with age, but not in the corresponding gut-associated LNs. Particulates were specifically contained within CD68+CD169- macrophages, which exhibited decreased activation, phagocytic capacity, and altered cytokine production compared with non-particulate-containing macrophages. The structures of B cell follicles and lymphatic drainage were also disrupted in lung-associated LNs with particulates. Our results reveal that the cumulative effects of environmental exposure and age may compromise immune surveillance of the lung via direct effects on immune cell function and lymphoid architecture.
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50
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Mo Y, Kang SY, Bang JY, Kim Y, Jeong J, Jeong EM, Kim HY, Cho SH, Kang HR. Intravenous Mesenchymal Stem Cell Administration Modulates Monocytes/Macrophages and Ameliorates Asthmatic Airway Inflammation in a Murine Asthma Model. Mol Cells 2022; 45:833-845. [PMID: 36380733 PMCID: PMC9676992 DOI: 10.14348/molcells.2022.0038] [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: 03/08/2022] [Revised: 07/06/2022] [Accepted: 07/06/2022] [Indexed: 11/17/2022] Open
Abstract
Although asthma is a common chronic airway disease that responds well to anti-inflammatory agents, some patients with asthma are unresponsive to conventional treatment. Mesenchymal stem cells (MSCs) have therapeutic potential for the treatment of inflammatory diseases owing to their immunomodulatory properties. However, the target cells of MSCs are not yet clearly known. This study aimed to determine the effect of human umbilical cord-derived MSCs (hUC-MSCs) on asthmatic lungs by modulating innate immune cells and effector T cells using a murine asthmatic model. Intravenously administered hUC-MSCs reduced airway resistance, mucus production, and inflammation in the murine asthma model. hUC-MSCs attenuated not only T helper (Th) 2 cells and Th17 cells but also augmented regulatory T cells (Tregs). As for innate lymphoid cells (ILC), hUC-MSCs effectively suppressed ILC2s by downregulating master regulators of ILC2s, such as Gata3 and Tcf7. Finally, regarding lung macrophages, hUC-MSCs reduced the total number of macrophages, particularly the proportion of the enhanced monocyte-derived macrophage population. In a closer examination of monocyte-derived macrophages, hUC-MSCs reduced the M2a and M2c populations. In conclusion, hUC-MSCs can be considered as a potential anti- asthmatic treatment given their therapeutic effect on the asthmatic airway inflammation in a murine asthma model by modulating innate immune cells, such as ILC2s, M2a, and M2c macrophages, as well as affecting Tregs and effector T cells.
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Affiliation(s)
- Yosep Mo
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul 03080, Korea
- Department of Translational Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Sung-Yoon Kang
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul 03080, Korea
- Department of Internal Medicine, Gachon University Gil Medical Center, Incheon 21565, Korea
| | - Ji-Young Bang
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul 03080, Korea
- Department of Translational Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Yujin Kim
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul 03080, Korea
- Department of Translational Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Jiung Jeong
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Eui-Man Jeong
- Department of Pharmacy, Jeju National University College of Pharmacy, Jeju 63243, Korea
| | - Hye Young Kim
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul 03080, Korea
- Department of Medical Science, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Sang-Heon Cho
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul 03080, Korea
- Department of Translational Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Hye-Ryun Kang
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul 03080, Korea
- Department of Translational Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
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