101
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Mytych JS, Pan Z, Farris AD. Efferocytosis and Anthrax: Implications for Bacterial Sepsis? JOURNAL OF CELLULAR IMMUNOLOGY 2021; 3:133-139. [PMID: 34708219 PMCID: PMC8547791 DOI: 10.33696/immunology.3.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Joshua S Mytych
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation (OMRF), 825 NE 13th St., Oklahoma City, OK 73104, USA.,Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center (OUHSC), 940 Stanton L. Young Blvd, Oklahoma City, OK 73104, USA
| | - Zijian Pan
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation (OMRF), 825 NE 13th St., Oklahoma City, OK 73104, USA
| | - A Darise Farris
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation (OMRF), 825 NE 13th St., Oklahoma City, OK 73104, USA.,Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center (OUHSC), 940 Stanton L. Young Blvd, Oklahoma City, OK 73104, USA
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102
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Li YT, Yamazaki S, Takaki E, Ouchi Y, Kitayama T, Tamai K. PDGFRα-lineage origin directs monocytes to trafficking proficiency to support peripheral immunity. Eur J Immunol 2021; 52:204-221. [PMID: 34708880 PMCID: PMC9299050 DOI: 10.1002/eji.202149479] [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: 07/01/2021] [Revised: 10/11/2021] [Accepted: 10/25/2021] [Indexed: 12/03/2022]
Abstract
Multiple embryonic precursors give rise to leukocytes in adults while the lineage‐based functional impacts are underappreciated. Mesodermal precursors expressing PDGFRα appear transiently during E7.5‐8.5 descend to a subset of Lin–Sca1+Kit+ hematopoietic progenitors found in adult BM. By analyzing a PDGFRα‐lineage tracing mouse line, we here report that PDGFRα‐lineage BM F4/80+SSClo monocytes/macrophages are solely Ly6C+LFA‐1hiMac‐1hi monocytes enriched on the abluminal sinusoidal endothelium while Ly6C–LFA‐1loMac‐1lo macrophages are mostly from non‐PDGFRα‐lineage in vivo. Monocytes with stronger integrin profiles outcompete macrophages for adhesion on an endothelial monolayer or surfaces coated with ICAM‐1‐Fc or VCAM‐1‐Fc. Egress of PDGFRα‐lineage‐rich monocytes and subsequent differentiation to peripheral macrophages spatially segregates them from non‐PDGFRα‐lineage BM‐resident macrophages and allows functional specialization since macrophages derived from these egressing monocytes differ in morphology, phenotype, and functionality from BM‐resident macrophages in culture. Extravasation preference for blood PDGFRα‐lineage monocytes varies by tissues and governs the local lineage composition of macrophages. More PDGFRα‐lineage classical monocytes infiltrated into skin and colon but not into peritoneum. Accordingly, transcriptomic analytics indicated augmented inflammatory cascades in dermatitis skin of BM‐chimeric mice harbouring only PDGFRα‐lineage leukocytes. Thus, the PDGFRα‐lineage origin biasedly generates monocytes predestined for BM exit to support peripheral immunity following extravasation and macrophage differentiation.
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Affiliation(s)
- Yu-Tung Li
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Japan
| | | | | | | | | | - Katsuto Tamai
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Japan
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103
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Singhal A, Kumar S. Neutrophil and remnant clearance in immunity and inflammation. Immunology 2021; 165:22-43. [PMID: 34704249 DOI: 10.1111/imm.13423] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/18/2021] [Accepted: 10/21/2021] [Indexed: 12/13/2022] Open
Abstract
Neutrophil-centred inflammation and flawed clearance of neutrophils cause and exuberate multiple pathological conditions. These most abundant leukocytes exhibit very high daily turnover in steady-state and stress conditions. Various armours including oxidative burst, NETs and proteases function against pathogens, but also dispose neutrophils to spawn pro-inflammatory responses. Neutrophils undergo death through different pathways upon ageing, infection, executing the intruder's elimination. These include non-lytic apoptosis and other lytic deaths including NETosis, necroptosis and pyroptosis with distinct disintegration of the cellular membrane. This causes release and presence of different intracellular cytotoxic, and tissue-damaging content as cell remnants in the extracellular environment. The apoptotic cells and apoptotic bodies get cleared with non-inflammatory outcomes, while lytic deaths associated remnants including histones and cell-free DNA cause pro-inflammatory responses. Indeed, the enhanced frequencies of neutrophil-associated proteases, cell-free DNA and autoantibodies in diverse pathologies including sepsis, asthma, lupus and rheumatoid arthritis, imply disturbed neutrophil resolution programmes in inflammatory and autoimmune diseases. Thus, the clearance mechanisms of neutrophils and associated remnants are vital for therapeutics. Though studies focused on clearance mechanisms of senescent or apoptotic neutrophils so far generated a good understanding of the same, clearance of neutrophils undergoing distinct lytic deaths, including NETs, are being the subjects of intense investigations. Here, in this review, we are providing the current updates in the clearance mechanisms of apoptotic neutrophils and focusing on not so well-defined recognition, uptake and degradation of neutrophils undergoing lytic death and associated remnants that may provide new therapeutic approaches in inflammation and autoimmunity.
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Affiliation(s)
- Apurwa Singhal
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Sachin Kumar
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Postal Staff College Area, Ghaziabad, Uttar Pradesh, India
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104
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Leite FRM, Nascimento GG, Møller HJ, Belibasakis GN, Bostanci N, Smith PC, López R. Cytokine profiles and the dynamic of gingivitis development in humans. J Clin Periodontol 2021; 49:67-75. [PMID: 34664296 DOI: 10.1111/jcpe.13565] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 09/07/2021] [Accepted: 09/29/2021] [Indexed: 12/25/2022]
Abstract
AIM To investigate the relationship between cytokine profiles and "fast" and "slow" patterns of gingival inflammation development. MATERIALS AND METHODS Forty-two adults participated in an experimental gingivitis study, comprising a 2-week hygiene phase (clinical examination and professional cleaning); a 3-week induction phase (absence of oral hygiene); and a 2-week resolution phase (re-establishment of oral hygiene). Plaque and gingival inflammation scores were assessed. Interferon-gamma (IFN-γ), interleukin (IL)-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12p70, IL-13, and tumour necrosis factor-alpha (TNF-α) from gingival crevicular fluid were collected and measured by multiplex ELISA. Group-based-trajectory-modelling (GBTM) was used to model cytokine profiles over the induction phase. The effect of gingival inflammation on cytokine levels over time was estimated with mixed-effects modelling. RESULTS GBTM analysis revealed two cytokine profiles, "non-organized response" (IL-4, IL-6, IL-8, IL-12, and IL-13) and "organized response" (IL-2, IL-10, and TNF-α). Among the "slow" responders, neither cytokine profile was associated with gingivitis. In contrast, a "fast" response was associated with a higher "non-organized response" factor (coef. 0.14) and a lower "organized response" factor (coef. -0.03). CONCLUSION A "fast" gingivitis development was associated with a higher "non-organized response" and a lower "organized response", which may elucidate the role of individual variability in gingivitis susceptibility.
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Affiliation(s)
- Fábio R M Leite
- Section for Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Gustavo G Nascimento
- Section for Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Holger J Møller
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
| | - Georgios N Belibasakis
- Section of Periodontology and Preventive Medicine, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Nagihan Bostanci
- Section of Periodontology and Preventive Medicine, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Patricio C Smith
- School of Dentistry, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rodrigo López
- Section for Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
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105
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Ko KI, Sculean A, Graves DT. Diabetic wound healing in soft and hard oral tissues. Transl Res 2021; 236:72-86. [PMID: 33992825 PMCID: PMC8554709 DOI: 10.1016/j.trsl.2021.05.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/06/2021] [Accepted: 05/06/2021] [Indexed: 12/17/2022]
Abstract
There is significant interest in understanding the cellular mechanisms responsible for expedited healing response in various oral tissues and how they are impacted by systemic diseases. Depending upon the types of oral tissue, wound healing may occur by predominantly re-eptihelialization, by re-epithelialization with substantial new connective tissue formation, or by a a combination of both plus new bone formation. As a result, the cells involved differ and are impacted by systemic diaseses in various ways. Diabetes mellitus is a prevalent metabolic disorder that impairs barrier function and healing responses throughout the human body. In the oral cavity, diabetes is a known risk factor for exacerbated periodontal disease and delayed wound healing, which includes both soft and hard tissue components. Here, we review the mechanisms of diabetic oral wound healing, particularly on impaired keratinocyte proliferation and migration, altered level of inflammation, and reduced formation of new connective tissue and bone. In particular, diabetes inhibits the expression of mitogenic growth factors whereas that of pro-inflammatory cytokines is elevated through epigenetic mechanisms. Moreover, hyperglycemia and oxidative stress induced by diabetes prevents the expansion of mesengenic cells that are involved in both soft and hard tissue oral wounds. A better understanding of how diabetes influences the healing processes is crucial for the prevention and treatment of diabetes-associated oral complications.
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Affiliation(s)
- Kang I Ko
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, 19104
| | - Anton Sculean
- Department of Periodontology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland
| | - Dana T Graves
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, 19104.
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106
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Wang H, Li X, Kajikawa T, Shin J, Lim JH, Kourtzelis I, Nagai K, Korostoff JM, Grossklaus S, Naumann R, Chavakis T, Hajishengallis G. Stromal cell-derived DEL-1 inhibits Tfh cell activation and inflammatory arthritis. J Clin Invest 2021; 131:e150578. [PMID: 34403362 PMCID: PMC8483759 DOI: 10.1172/jci150578] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 08/12/2021] [Indexed: 11/17/2022] Open
Abstract
The secreted protein developmental endothelial locus 1 (DEL-1) regulates inflammatory cell recruitment and protects against inflammatory pathologies in animal models. Here, we investigated DEL-1 in inflammatory arthritis using collagen-induced arthritis (CIA) and collagen Ab-induced arthritis (CAIA) models. In both models, mice with endothelium-specific overexpression of DEL-1 were protected from arthritis relative to WT controls, whereas arthritis was exacerbated in DEL-1-deficient mice. Compared with WT controls, mice with collagen VI promoter-driven overexpression of DEL-1 in mesenchymal cells were protected against CIA but not CAIA, suggesting a role for DEL-1 in the induction of the arthritogenic Ab response. Indeed, DEL-1 was expressed in perivascular stromal cells of the lymph nodes and inhibited Tfh and germinal center B cell responses. Mechanistically, DEL-1 inhibited DC-dependent induction of Tfh cells by targeting the LFA-1 integrin on T cells. Overall, DEL-1 restrained arthritis through a dual mechanism, one acting locally in the joints and associated with the anti-recruitment function of endothelial cell-derived DEL-1; the other mechanism acting systemically in the lymph nodes and associated with the ability of stromal cell-derived DEL-1 to restrain Tfh responses. DEL-1 may therefore be a promising therapeutic for the treatment of inflammatory arthritis.
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Affiliation(s)
- Hui Wang
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Xiaofei Li
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Tetsuhiro Kajikawa
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jieun Shin
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jong-Hyung Lim
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ioannis Kourtzelis
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
- Hull York Medical School, York Biomedical Research Institute, University of York, York, United Kingdom
| | - Kosuke Nagai
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Jonathan M. Korostoff
- Department of Periodontics, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Sylvia Grossklaus
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Ronald Naumann
- Transgenic Core Facility, Max Planck Institute for Molecular Cell Biology and Genetics, Dresden, Germany
| | - Triantafyllos Chavakis
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
- Centre for Cardiovascular Science, Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - George Hajishengallis
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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107
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Zhao B, Li H, Cao S, Zhong W, Li B, Jia W, Ning Z. Negative Regulators of Inflammation Response to the Dynamic Expression of Cytokines in DF-1 and MDCK Cells Infected by Avian Influenza Viruses. Inflammation 2021; 45:573-589. [PMID: 34581936 DOI: 10.1007/s10753-021-01568-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 11/25/2022]
Abstract
The H5N1 and H9N2 avian influenza viruses (AIVs) seriously endanger the poultry industry and threaten human health. Characteristic inflammatory responses caused by H5N1 and H9N2 AIVs in birds and mammals result in unique clinical manifestations. The role of anti-inflammatory regulators, PTX3, Del-1, and GDF-15, in H5N1 and H9N2-AIV-mediated inflammation in birds and mammals has not yet been verified. Here, the expression of PTX3, Del-1, and GDF-15 in DF-1 and MDCK cells infected with H5N1 and H9N2 AIVs and their effect on inflammatory cytokines were analyzed. Infection with both AIVs increased PTX3, Del-1, and GDF-15 expression in DF-1 and MDCK cells. Infection with H9N2 or H5N1 AIV in DF-1 and MDCK cells with overexpression of all three factors, either alone or in combination, inhibited the expression of tested inflammatory cytokines. Furthermore, co-expression of PTX3, Del-1, and GDF-15 enhanced the inhibition, irrespective of the cell line. The findings from this study offer insight into the pathogenic differences between H5N1 and H9N2 AIVs in varied hosts. Moreover, our findings can be used to help screen for host-specific anti-inflammatory agents.
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Affiliation(s)
- Bingqian Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Huizi Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Suilan Cao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Wenxia Zhong
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Baojian Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Weixin Jia
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Zhangyong Ning
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China. .,Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, 525000, China.
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108
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Ni Y, Hu BC, Wu GH, Shao ZQ, Zheng Y, Zhang R, Jin J, Hong J, Yang XH, Sun RH, Liu JQ, Mo SJ. Interruption of neutrophil extracellular traps formation dictates host defense and tubular HOXA5 stability to augment efficacy of anti-Fn14 therapy against septic AKI. Theranostics 2021; 11:9431-9451. [PMID: 34646379 PMCID: PMC8490525 DOI: 10.7150/thno.61902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 09/05/2021] [Indexed: 12/29/2022] Open
Abstract
The immunosuppressive, inflammatory microenvironment orchestrated by neutrophil extracellular traps (NETs) plays a principal role in pathogenesis of sepsis. Fibroblast growth factor-inducible molecule 14 (Fn14) has been established as a potential target for septic acute kidney injury (AKI), making further therapeutic benefits from combined NETs and Fn14 blockade possible. Methods: The concurrence of NETs and Fn14 in mice and patients with septic AKI were assessed by immunofluorescence, immunohistochemistry, enzyme-linked immunosorbent assay (ELISA) and in silico studies. Survival, histopathological and biochemical analyses of wild-type and PAD4-deficient CMV-Cre; PAD4 fl/fl mice with septic AKI were applied to evaluate the efficacy of either pharmacological or genetic NETs interruption in combination with Fn14 blockade. Molecular mechanisms underlying such effects were determined by CRISPR technology, fluorescence-activated cell sorter analysis (FACS), cycloheximide (CHX) pulse-chase, luciferase reporter and chromatin immunoprecipitation (ChIP) assay. Results: NETs formation is concurred with Fn14 upregulation in murine AKI models of abdominal, endotoxemic, multidrug-resistant sepsis as well as in serum samples of patients with septic AKI. Pharmacological or genetic interruption of NETs formation synergizes with ITEM-2, a monoclonal antibody (mAb) of Fn14, to prolong mice survival and provide renal protection against abdominal sepsis, the effects that could be abrogated by elimination of macrophages. Interrupting NETs formation predominantly perpetuates infiltration and survival of efferocytic growth arrest-specific protein 6+ (GAS6+) macrophages in combination with ITEM-2 therapy and enhances transcription of tubular cell-intrinsic Fn14 in a DNA methyltransferase 3a (DNMT3a)-independent manner through dismantling the proteasomes-mediated turnover of homeobox protein Hox-A5 (HOXA5) upon abdominal sepsis challenge or LPS stimuli. Pharmacological NETs interruption potentiates the anti-septic AKI efficacy of ITEM-2 in murine models of endotoxemic and multidrug-resistant sepsis. Conclusion: Our preclinical data propose that interrupting NETs formation in combination with Fn14 mAb might be a feasible therapeutic strategy for septic AKI.
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Affiliation(s)
- Yin Ni
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
| | - Bang-Chuan Hu
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
| | - Guo-Hua Wu
- Zhejiang University School of Medicine, Zhejiang University, Hangzhou 310029, Zhejiang, P.R. China
| | - Zi-Qiang Shao
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
| | - Yang Zheng
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
| | - Run Zhang
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
| | - Jun Jin
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
| | - Jun Hong
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
| | - Xiang-Hong Yang
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
| | - Ren-Hua Sun
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
| | - Jin-Quan Liu
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
| | - Shi-Jing Mo
- Department of Intensive Care Unit, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R. China
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109
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Lin P, Niimi H, Ohsugi Y, Tsuchiya Y, Shimohira T, Komatsu K, Liu A, Shiba T, Aoki A, Iwata T, Katagiri S. Application of Ligature-Induced Periodontitis in Mice to Explore the Molecular Mechanism of Periodontal Disease. Int J Mol Sci 2021; 22:ijms22168900. [PMID: 34445604 PMCID: PMC8396362 DOI: 10.3390/ijms22168900] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/07/2021] [Accepted: 08/10/2021] [Indexed: 02/06/2023] Open
Abstract
Periodontitis is an inflammatory disease characterized by the destruction of the periodontium. In the last decade, a new murine model of periodontitis has been widely used to simulate alveolar bone resorption and periodontal soft tissue destruction by ligation. Typically, 3-0 to 9-0 silks are selected for ligation around the molars in mice, and significant bone loss and inflammatory infiltration are observed within a week. The ligature-maintained period can vary according to specific aims. We reviewed the findings on the interaction of systemic diseases with periodontitis, periodontal tissue destruction, the immunological and bacteriological responses, and new treatments. In these studies, the activation of osteoclasts, upregulation of pro-inflammatory factors, and excessive immune response have been considered as major factors in periodontal disruption. Multiple genes identified in periodontal tissues partly reflect the complexity of the pathogenesis of periodontitis. The effects of novel treatment methods on periodontitis have also been evaluated in a ligature-induced periodontitis model in mice. This model cannot completely represent all aspects of periodontitis in humans but is considered an effective method for the exploration of its mechanisms. Through this review, we aimed to provide evidence and enlightenment for future studies planning to use this model.
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Affiliation(s)
- Peiya Lin
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Hiromi Niimi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
- Correspondence: (H.N.); (Y.O.); Tel.: +81-3-5803-5488 (H.N. & Y.O.)
| | - Yujin Ohsugi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
- Correspondence: (H.N.); (Y.O.); Tel.: +81-3-5803-5488 (H.N. & Y.O.)
| | - Yosuke Tsuchiya
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Tsuyoshi Shimohira
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Keiji Komatsu
- Department of Lifetime Oral Health Care Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan;
| | - Anhao Liu
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Takahiko Shiba
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Akira Aoki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Takanori Iwata
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Sayaka Katagiri
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
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110
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Palinski W, Monti M, Camerlingo R, Iacobucci I, Bocella S, Pinto F, Iannuzzi C, Mansueto G, Pignatiello S, Fazioli F, Gallo M, Marra L, Cozzolino F, De Chiara A, Pucci P, Bilancio A, de Nigris F. Lysosome purinergic receptor P2X4 regulates neoangiogenesis induced by microvesicles from sarcoma patients. Cell Death Dis 2021; 12:797. [PMID: 34404763 PMCID: PMC8371002 DOI: 10.1038/s41419-021-04069-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 07/22/2021] [Accepted: 07/26/2021] [Indexed: 12/20/2022]
Abstract
The tumor microenvironment modulates cancer growth. Extracellular vesicles (EVs) have been identified as key mediators of intercellular communication, but their role in tumor growth is largely unexplored. Here, we demonstrate that EVs from sarcoma patients promote neoangiogenesis via a purinergic X receptor 4 (P2XR4) -dependent mechanism in vitro and in vivo. Using a proteomic approach, we analyzed the protein content of plasma EVs and identified critical activated pathways in human umbilical vein endothelial cells (HUVECs) and human progenitor hematopoietic cells (CD34+). We then showed that vessel formation was due to rapid mitochondrial activation, intracellular Ca2+ mobilization, increased extracellular ATP, and trafficking of the lysosomal P2XR4 to the cell membrane, which is required for cell motility and formation of stable branching vascular networks. Cell membrane translocation of P2XR4 was induced by proteins and chemokines contained in EVs (e.g. Del-1 and SDF-1). Del-1 was found expressed in many EVs from sarcoma tumors and several tumor types. P2XR4 blockade reduced EVs-induced vessels in angioreactors, as well as intratumor vascularization in mouse xenografts. Together, these findings identify P2XR4 as a key mediator of EVs-induced tumor angiogenesis via a signaling mediated by mitochondria-lysosome-sensing response in endothelial cells, and indicate a novel target for therapeutic interventions.
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Affiliation(s)
- Wulf Palinski
- Department of Medicine, University of California San Diego, La Jolla, CA, USA.
| | - Maria Monti
- Department of Chemical Sciences, University of Napoli Federico II and CEINGE Advanced Biotechnologies, Naples, Italy
| | - Rosa Camerlingo
- Department of Cell Biology and Biotherapy Research, Istituto Nazionale Tumori IRCCS - Fondazione G. Pascale, Naples, Italy
| | - Ilaria Iacobucci
- Department of Chemical Sciences, University of Napoli Federico II and CEINGE Advanced Biotechnologies, Naples, Italy
| | - Serena Bocella
- Department of Experimental Medicine, University of Campania "LuigiVanvitelli", Naples, Italy
| | - Federica Pinto
- Department of Experimental Medicine, University of Campania "LuigiVanvitelli", Naples, Italy
| | - Clara Iannuzzi
- Department of Precision Medicine, University of Campania "LuigiVanvitelli", Naples, Italy
| | - Gelsomina Mansueto
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy.,Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Sara Pignatiello
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Flavio Fazioli
- Division of Skeletal Muscle Oncology Surgery, Istituto Nazionale Tumori IRCCS - Fondazione G. Pascale, Naples, Italy
| | - Michele Gallo
- Division of Skeletal Muscle Oncology Surgery, Istituto Nazionale Tumori IRCCS - Fondazione G. Pascale, Naples, Italy
| | - Laura Marra
- Department of Cell Biology and Biotherapy Research, Istituto Nazionale Tumori IRCCS - Fondazione G. Pascale, Naples, Italy
| | - Flora Cozzolino
- Department of Chemical Sciences, University of Napoli Federico II and CEINGE Advanced Biotechnologies, Naples, Italy
| | - Annarosaria De Chiara
- Division of Anatomy, Istituto Nazionale Tumori IRCCS - Fondazione G. Pascale, Naples, Italy
| | - Piero Pucci
- Department of Chemical Sciences, University of Napoli Federico II and CEINGE Advanced Biotechnologies, Naples, Italy
| | - Antonio Bilancio
- Department of Precision Medicine, University of Campania "LuigiVanvitelli", Naples, Italy
| | - Filomena de Nigris
- Department of Precision Medicine, University of Campania "LuigiVanvitelli", Naples, Italy.
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111
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Wei X, Zou S, Xie Z, Wang Z, Huang N, Cen Z, Hao Y, Zhang C, Chen Z, Zhao F, Hu Z, Teng X, Gui Y, Liu X, Zheng H, Zhou H, Chen S, Cheng J, Zeng F, Zhou Y, Wu W, Hu J, Wei Y, Cui K, Li J. EDIL3 deficiency ameliorates adverse cardiac remodeling by neutrophil extracellular traps (NET)-mediated macrophage polarization. Cardiovasc Res 2021; 118:2179-2195. [PMID: 34375400 DOI: 10.1093/cvr/cvab269] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 08/08/2021] [Indexed: 02/05/2023] Open
Abstract
AIMS After myocardial infarction (MI), injured cardiomyocytes recruit neutrophils and monocytes/macrophages to myocardium, which in turn initiates inflammatory and reparative cascades, respectively. Either insufficient or excessive inflammation impairs cardiac healing. As an endogenous inhibitor of neutrophil adhesion, EDIL3 plays a crucial role in inflammatory regulation. However, the role of EDIL3 in MI remains obscure. We aimed to define the role of EDIL3 in cardiac remodeling after MI. METHODS AND RESULTS Serum EDIL3 levels in MI patients were negatively associated with MI biomarkers. Consistently, WT mice after MI showed low levels of cardiac EDIL3. Compared with WT mice, Edil3-/- mice showed improvement of post-MI adverse remodeling, as they exhibited lower mortality, better cardiac function, shorter scar length and smaller LV cavity. Accordingly, infarcted hearts of Edil3-/- mice contained fewer cellular debris and lower amounts of fibrosis content, with decreased collagen I/III expression and the percentage of α-smooth muscle actin (α-SMA) myofibroblasts. Mechanistically, EDIL3 deficiency did not affect the recruitment of monocytes or T cells, but enhanced neutrophil recruitment and following expansion of pro-inflammatory Mertk-MHC-IIlo-int (myeloid-epithelial-reproductive tyrosine kinase/major histocompatibility complex II) macrophages. The injection of neutrophil-specific C-X-C motif chemokine receptor 2 (CXCR2) antagonist eliminated the differences in macrophage polarization and cardiac function between WT and Edil3-/- mice after MI. Neutrophil extracellular traps (NETs), which were more abundant in the hearts of Edil3-/- mice, contributed to Mertk-MHC-IIlo-int polarization via toll-like receptor 9 pathway. The inhibition of NET formation by treatment of neutrophil elastase inhibitor or DNase I impaired macrophage polarization, increased cellular debris and aggravated cardiac adverse remodeling, thus removed the differences of cardiac function between WT and Edil3-/- mice. Totally, EDIL3 plays an important role in NET-primed macrophage polarization and cardiac remodeling during MI. CONCLUSION We not only reveal that EDIL3 deficiency ameliorates adverse cardiac healing via NET-mediated pro-inflammatory macrophage polarization but also discover a new crosstalk between neutrophil and macrophage after MI. TRANSLATIONAL PERSPECTIVE We established EDIL3 as a critical regulator of neutrophil recruitment and macrophage polarization during post-MI cardiac remodeling. EDIL3 may be a candidate prognostic biomarker and drug target for cardiovascular diseases. The novel pathways and mechanisms revealed in this study has renewed our understanding of the role of leukocyte adhesion inhibitors in cardiovascular disease. Meanwhile, our study reaffirmed the indispensable role of inflammation in the healing process, thereby prompting the reevaluation of post-MI anti-inflammatory treatments.
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Affiliation(s)
- Xiaoqiong Wei
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Song Zou
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zhonghui Xie
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zhen Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China.,Department of Liver Surgery & Liver Transplantation, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan 610041, China
| | - Nongyu Huang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Zhifu Cen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yan Hao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Chengxin Zhang
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann arbor, MI, USA
| | - Zhenyu Chen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Fulei Zhao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Zhonglan Hu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Xiu Teng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Yiyue Gui
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xiao Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Huaping Zheng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Hong Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Shuwen Chen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Juan Cheng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Fanlian Zeng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Yifan Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Wenling Wu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Jing Hu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Yuquan Wei
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Kaijun Cui
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jiong Li
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
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112
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Schmid T, Brüne B. Prostanoids and Resolution of Inflammation - Beyond the Lipid-Mediator Class Switch. Front Immunol 2021; 12:714042. [PMID: 34322137 PMCID: PMC8312722 DOI: 10.3389/fimmu.2021.714042] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 06/30/2021] [Indexed: 12/19/2022] Open
Abstract
Bioactive lipid mediators play a major role in regulating inflammatory processes. Herein, early pro-inflammatory phases are characterized and regulated by prostanoids and leukotrienes, whereas specialized pro-resolving mediators (SPM), including lipoxins, resolvins, protectins, and maresins, dominate during the resolution phase. While pro-inflammatory properties of prostanoids have been studied extensively, their impact on later phases of the inflammatory process has been attributed mainly to their ability to initiate the lipid-mediator class switch towards SPM. Yet, there is accumulating evidence that prostanoids directly contribute to the resolution of inflammation and return to homeostasis. In this mini review, we summarize the current knowledge of the resolution-regulatory properties of prostanoids and discuss potential implications for anti-inflammatory, prostanoid-targeted therapeutic interventions.
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Affiliation(s)
- Tobias Schmid
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Bernhard Brüne
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany.,German Cancer Consortium (DKTK) Partner Site Frankfurt, Frankfurt, Germany.,Frankfurt Cancer Institute, Goethe-University Frankfurt, Frankfurt, Germany.,Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Frankfurt, Germany
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113
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Li M, Zhong D, Li G. Regulatory role of local tissue signal Del-1 in cancer and inflammation: a review. Cell Mol Biol Lett 2021; 26:31. [PMID: 34217213 PMCID: PMC8254313 DOI: 10.1186/s11658-021-00274-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/28/2021] [Indexed: 12/29/2022] Open
Abstract
Developmental endothelial locus-1 (Del-1) is a secretory, multifunctional domain protein. It can bind to integrins and phosphatidylserine. As a local tissue signal, it plays a regulatory role in the cancer microenvironment and inflammation. Del-1 has destructive effects in most cancers and is associated with the progression and invasion of some cancers. In contrast, Del-1 also plays a protective role in inflammation. Del-1 regulates inflammation by regulating the generation of neutrophils in bone marrow, inhibiting the recruitment and migration of neutrophils and accelerating the clearance of neutrophils by macrophages. Del-1 and IL-17 are reciprocally regulated, and their balance maintains immune system homeostasis. Del-1 is expected to become a new therapeutic target for inflammatory disorders such as multiple sclerosis.
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Affiliation(s)
- Meng Li
- Department of Neurology, First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Road, Harbin, 150001, Heilongjiang, China
| | - Di Zhong
- Department of Neurology, First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Road, Harbin, 150001, Heilongjiang, China.
| | - Guozhong Li
- Department of Neurology, First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Road, Harbin, 150001, Heilongjiang, China
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114
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AKIN DF, ILIKCI R. Mutations and expression profile of EDIL3 and correlation with HIF1A and tumor-associated carbonic anhydrases in pancreatic cancer. CLINICAL AND EXPERIMENTAL HEALTH SCIENCES 2021. [DOI: 10.33808/clinexphealthsci.756701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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115
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Decker C, Sadhu S, Fredman G. Pro-Resolving Ligands Orchestrate Phagocytosis. Front Immunol 2021; 12:660865. [PMID: 34177900 PMCID: PMC8222715 DOI: 10.3389/fimmu.2021.660865] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/06/2021] [Indexed: 12/18/2022] Open
Abstract
The resolution of inflammation is a tissue protective program that is governed by several factors including specialized pro-resolving mediators (SPMs), proteins, gasses and nucleotides. Pro-resolving mediators activate counterregulatory programs to quell inflammation and promote tissue repair in a manner that does not compromise host defense. Phagocytes like neutrophils and macrophages play key roles in the resolution of inflammation because of their ability to remove debris, microbes and dead cells through processes including phagocytosis and efferocytosis. Emerging evidence suggests that failed resolution of inflammation and defective phagocytosis or efferocytosis underpins several prevalent human diseases. Therefore, understanding factors and mechanisms associated with enhancing these processes is a critical need. SPMs enhance phagocytosis and efferocytosis and this review will highlight mechanisms associated with their actions.
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Affiliation(s)
- Christa Decker
- The Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, United States
| | - Sudeshna Sadhu
- The Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, United States
| | - Gabrielle Fredman
- The Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, United States
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116
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Cockram TOJ, Dundee JM, Popescu AS, Brown GC. The Phagocytic Code Regulating Phagocytosis of Mammalian Cells. Front Immunol 2021; 12:629979. [PMID: 34177884 PMCID: PMC8220072 DOI: 10.3389/fimmu.2021.629979] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 05/18/2021] [Indexed: 01/21/2023] Open
Abstract
Mammalian phagocytes can phagocytose (i.e. eat) other mammalian cells in the body if they display certain signals, and this phagocytosis plays fundamental roles in development, cell turnover, tissue homeostasis and disease prevention. To phagocytose the correct cells, phagocytes must discriminate which cells to eat using a 'phagocytic code' - a set of over 50 known phagocytic signals determining whether a cell is eaten or not - comprising find-me signals, eat-me signals, don't-eat-me signals and opsonins. Most opsonins require binding to eat-me signals - for example, the opsonins galectin-3, calreticulin and C1q bind asialoglycan eat-me signals on target cells - to induce phagocytosis. Some proteins act as 'self-opsonins', while others are 'negative opsonins' or 'phagocyte suppressants', inhibiting phagocytosis. We review known phagocytic signals here, both established and novel, and how they integrate to regulate phagocytosis of several mammalian targets - including excess cells in development, senescent and aged cells, infected cells, cancer cells, dead or dying cells, cell debris and neuronal synapses. Understanding the phagocytic code, and how it goes wrong, may enable novel therapies for multiple pathologies with too much or too little phagocytosis, such as: infectious disease, cancer, neurodegeneration, psychiatric disease, cardiovascular disease, ageing and auto-immune disease.
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Affiliation(s)
| | | | | | - Guy C. Brown
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
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117
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Li LC, Tian Y, Xiao J, Yang Y, Wu JN, Chen Y, Zhang PH, Gao-Smith F, Wang JG, Jin SW. Dexmedetomidine promotes inflammation resolving through TGF-β1 secreted by F4/80 +Ly6G + macrophage. Int Immunopharmacol 2021; 95:107480. [PMID: 33676148 DOI: 10.1016/j.intimp.2021.107480] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/01/2021] [Accepted: 02/04/2021] [Indexed: 01/07/2023]
Abstract
Dexmedetomidine (DEX) is a highly selective α2-adrenoceptor agonist, which can regulate inflammatory responses. However, whether DEX interferes with the inflammation resolving remains unclear. Here, we reported the effects of DEX on zymosan-induced generalized inflammation in mice during resolution. Mice were administered intraperitoneally with DEX after the initiation of sepsis. The resolution interval (Ri), a vital resolution indice, decreased from twelve hours to eight hours after the administration of DEX. The induction of peritoneal pro-inflammatory interleukin [IL] - 1β and tumour necrosis factor-α (TNF-α) appeared to be inhibited. Of interest, the anti-inflammatory transforming growth factor-β1 (TGF-β1) but not IL-10 levels were up-regulated at twenty-four hours in the DEX group along with 1.0 mg/mice zymosan A (ZyA) treatment. The expression levels of multiple genes related to protective immune processes and clearance functions were detected and revealed the same trends. DEX markedly increased the F4/80+Ly6G+ macrophage population. Additionally, the adequate apoptotic neutrophil clearance from injury after DEX installation could be reverse by opsonization or co-instillation of TGF-β1 neutralizing antibody in vivo, promoting the inflammation-resolution programs. In conclusion, DEX post-treatment, via the increase of F4/80+Ly6G+ macrophages, provokes further secretion of TGF-β1, leading to the attenuated cytokine storm and accelerated inflammation resolving.
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Affiliation(s)
- Lin-Chao Li
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
| | - Yang Tian
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
| | - Ji Xiao
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
| | - Yi Yang
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
| | - Jin-Ni Wu
- Department of Biochemistry, School of Basic Medical Sciences, Wenzhou Medical University, Central North Road, Wenzhou 325035, People's Republic of China
| | - Yan Chen
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
| | - Pu-Hong Zhang
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
| | - Fang Gao-Smith
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China.
| | - Jian-Guang Wang
- Department of Biochemistry, School of Basic Medical Sciences, Wenzhou Medical University, Central North Road, Wenzhou 325035, People's Republic of China.
| | - Sheng-Wei Jin
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China.
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118
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Wang W, Zheng C, Yang J, Li B. Intersection between macrophages and periodontal pathogens in periodontitis. J Leukoc Biol 2021; 110:577-583. [PMID: 34028883 DOI: 10.1002/jlb.4mr0421-756r] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 04/20/2021] [Accepted: 05/10/2021] [Indexed: 12/18/2022] Open
Abstract
Periodontitis is a chronic infectious disease characterized by loss of periodontal attachment and resorption of alveolar bone. Dysregulated oral microbial community is the initial factor of periodontitis and causes excessive infiltration of immune cells in periodontal tissues. Macrophage, as an important part of the innate immune system, interacts continually with oral pathogens. Macrophages can recognize and phagocytize pathogens and apoptotic neutrophils and produce the specialized pro-resolving mediators (SPMs) playing an important role in maintaining the homeostasis of tissue microenvironment. However, macrophages may also induce abnormal immune responses with the overstimulation from pathogens, leading to the destruction of periodontal tissues and alveolar bone. Looking for targeted drugs that can regulate the activities of oral pathogens and the functions of macrophages provides a new idea for periodontitis treatment. This review summarizes the interaction between macrophages and periodontal pathogens in periodontitis, focusing on the pro-inflammation and anti-inflammation phenotypes of macrophages, and briefly concludes potential new methods of periodontitis therapy targeted at oral pathogens and macrophages.
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Affiliation(s)
- Wenzhe Wang
- State Key Laboratory of Military Stomatology&National Clinical Research Center for Oral Diseases&Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Chenxi Zheng
- State Key Laboratory of Military Stomatology&National Clinical Research Center for Oral Diseases&Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Jianhua Yang
- State Key Laboratory of Military Stomatology&National Clinical Research Center for Oral Diseases&Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Bei Li
- State Key Laboratory of Military Stomatology&National Clinical Research Center for Oral Diseases&Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
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119
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Kalafati L, Kourtzelis I, Schulte-Schrepping J, Li X, Hatzioannou A, Grinenko T, Hagag E, Sinha A, Has C, Dietz S, de Jesus Domingues AM, Nati M, Sormendi S, Neuwirth A, Chatzigeorgiou A, Ziogas A, Lesche M, Dahl A, Henry I, Subramanian P, Wielockx B, Murray P, Mirtschink P, Chung KJ, Schultze JL, Netea MG, Hajishengallis G, Verginis P, Mitroulis I, Chavakis T. Innate Immune Training of Granulopoiesis Promotes Anti-tumor Activity. Cell 2021; 183:771-785.e12. [PMID: 33125892 PMCID: PMC7599076 DOI: 10.1016/j.cell.2020.09.058] [Citation(s) in RCA: 288] [Impact Index Per Article: 96.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 06/19/2020] [Accepted: 09/23/2020] [Indexed: 01/05/2023]
Abstract
Trained innate immunity, induced via modulation of mature myeloid cells or their bone marrow progenitors, mediates sustained increased responsiveness to secondary challenges. Here, we investigated whether anti-tumor immunity can be enhanced through induction of trained immunity. Pre-treatment of mice with β-glucan, a fungal-derived prototypical agonist of trained immunity, resulted in diminished tumor growth. The anti-tumor effect of β-glucan-induced trained immunity was associated with transcriptomic and epigenetic rewiring of granulopoiesis and neutrophil reprogramming toward an anti-tumor phenotype; this process required type I interferon signaling irrespective of adaptive immunity in the host. Adoptive transfer of neutrophils from β-glucan-trained mice to naive recipients suppressed tumor growth in the latter in a ROS-dependent manner. Moreover, the anti-tumor effect of β-glucan-induced trained granulopoiesis was transmissible by bone marrow transplantation to recipient naive mice. Our findings identify a novel and therapeutically relevant anti-tumor facet of trained immunity involving appropriate rewiring of granulopoiesis.
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Affiliation(s)
- Lydia Kalafati
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; National Center for Tumor Diseases, Partner Site Dresden, 01307 Dresden and German Cancer Research Center, Heidelberg, 69120 Heidelberg, Germany
| | - Ioannis Kourtzelis
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; National Center for Tumor Diseases, Partner Site Dresden, 01307 Dresden and German Cancer Research Center, Heidelberg, 69120 Heidelberg, Germany; Hull York Medical School, York Biomedical Research Institute, University of York, York, YO10 5DD, UK.
| | - Jonas Schulte-Schrepping
- Department of Genomics and Immunoregulation, Life and Medical Science Institute, University of Bonn, 53115 Bonn, Germany
| | - Xiaofei Li
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Aikaterini Hatzioannou
- Laboratory of Immune Regulation and Tolerance, Autoimmunity and Inflammation, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Tatyana Grinenko
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Eman Hagag
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Anupam Sinha
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; National Center for Tumor Diseases, Partner Site Dresden, 01307 Dresden and German Cancer Research Center, Heidelberg, 69120 Heidelberg, Germany
| | - Canan Has
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Sevina Dietz
- DFG-Center for Regenerative Therapies Dresden, 01307 Dresden, Germany
| | | | - Marina Nati
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Sundary Sormendi
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Ales Neuwirth
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Antonios Chatzigeorgiou
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Athanasios Ziogas
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Mathias Lesche
- DRESDEN-concept Genome Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany
| | - Andreas Dahl
- DRESDEN-concept Genome Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany
| | - Ian Henry
- Max-Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Pallavi Subramanian
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Ben Wielockx
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Peter Murray
- Immunoregulation Group, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Peter Mirtschink
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Kyoung-Jin Chung
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Joachim L Schultze
- Department of Genomics and Immunoregulation, Life and Medical Science Institute, University of Bonn, 53115 Bonn, Germany; PRECISE - Platform for Single Cell Genomics and Epigenomics at the German Center for Neurodegenerative Diseases and the University of Bonn, 53115 Bonn, Germany
| | - Mihai G Netea
- Department of Genomics and Immunoregulation, Life and Medical Science Institute, University of Bonn, 53115 Bonn, Germany; Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, 6525 XZ, the Netherlands
| | - George Hajishengallis
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Panayotis Verginis
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; Laboratory of Immune Regulation and Tolerance, Autoimmunity and Inflammation, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Ioannis Mitroulis
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; National Center for Tumor Diseases, Partner Site Dresden, 01307 Dresden and German Cancer Research Center, Heidelberg, 69120 Heidelberg, Germany
| | - Triantafyllos Chavakis
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, EH16 4TJ, UK.
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120
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Pacheco CMF, Maltos KLM, Shehabeldin MS, Thomas LL, Zhuang Z, Yoshizawa S, Verdelis K, Gaffen SL, Garlet GP, Little SR, Sfeir C. Local Sustained Delivery of Anti-IL-17A Antibodies Limits Inflammatory Bone Loss in Murine Experimental Periodontitis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 206:2386-2392. [PMID: 33952619 PMCID: PMC10415091 DOI: 10.4049/jimmunol.2001432] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/10/2021] [Indexed: 12/14/2022]
Abstract
Periodontal disease (PD) is a chronic destructive inflammatory disease of the tooth-supporting structures that leads to tooth loss at its advanced stages. Although the disease is initiated by a complex organization of oral microorganisms in the form of a plaque biofilm, it is the uncontrolled immune response to periodontal pathogens that fuels periodontal tissue destruction. IL-17A has been identified as a key cytokine in the pathogenesis of PD. Despite its well documented role in host defense against invading pathogens at oral barrier sites, IL-17A-mediated signaling can also lead to a detrimental inflammatory response, causing periodontal bone destruction. In this study, we developed a local sustained delivery system that restrains IL-17A hyperactivity in periodontal tissues by incorporating neutralizing anti-IL-17A Abs in poly(lactic-coglycolic) acid microparticles (MP). This formulation allowed for controlled release of anti-IL-17A in the periodontium of mice with ligature-induced PD. Local delivery of anti-IL-17A MP after murine PD induction inhibited alveolar bone loss and osteoclastic activity. The anti-IL-17A MP formulation also decreased expression of IL-6, an IL-17A target gene known to induce bone resorption in periodontal tissues. This study demonstrates proof of concept that local and sustained release of IL-17A Abs constitutes a promising therapeutic strategy for PD and may be applicable to other osteolytic bone diseases mediated by IL-17A-driven inflammation.
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Affiliation(s)
- Cinthia M F Pacheco
- Center for Craniofacial Regeneration, University of Pittsburgh, Pittsburgh, PA
| | - Katia L M Maltos
- Center for Craniofacial Regeneration, University of Pittsburgh, Pittsburgh, PA
| | - Mostafa S Shehabeldin
- Center for Craniofacial Regeneration, University of Pittsburgh, Pittsburgh, PA
- Department of Periodontics and Preventive Dentistry, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA
- Department of Oral Biology, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Laura L Thomas
- Center for Craniofacial Regeneration, University of Pittsburgh, Pittsburgh, PA
| | - Zhe Zhuang
- Center for Craniofacial Regeneration, University of Pittsburgh, Pittsburgh, PA
- School of Medicine, Tsinghua University, Beijing, China
| | - Sayuri Yoshizawa
- Center for Craniofacial Regeneration, University of Pittsburgh, Pittsburgh, PA
- Department of Periodontics and Preventive Dentistry, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA
| | | | - Sarah L Gaffen
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA
| | - Gustavo P Garlet
- Department of Biological Sciences, Baru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Steven R Little
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA; and
| | - Charles Sfeir
- Center for Craniofacial Regeneration, University of Pittsburgh, Pittsburgh, PA;
- Department of Periodontics and Preventive Dentistry, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA
- Department of Oral Biology, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA
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121
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Vago JP, Amaral FA, van de Loo FAJ. Resolving inflammation by TAM receptor activation. Pharmacol Ther 2021; 227:107893. [PMID: 33992683 DOI: 10.1016/j.pharmthera.2021.107893] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/06/2021] [Accepted: 05/10/2021] [Indexed: 12/12/2022]
Abstract
The control of inflammation is strictly regulated to ensure the adequate intensity and duration of an inflammatory response, enabling the removal of the trigger factors and the restoration of the integrity of the tissues and their functions. This process is coordinated by anti-inflammatory and pro-resolving mediators that regulate the cellular and molecular events necessary to restore homeostasis, and defects in this control are associated with the development of chronic and autoimmune diseases. The TAM family of receptor tyrosine kinases-Tyro3, Axl, and MerTK-plays an essential role in efferocytosis, a key process for the resolution of inflammation. However, new studies have demonstrated that TAM receptor activation not only reduces the synthesis of pro-inflammatory mediators by different cell types in response to some stimuli but also stimulates the production of anti-inflammatory and pro-resolving molecules that control the inflammation. This review provides a comprehensive view of TAM receptor family members as important players in controlling inflammatory responses through anti-inflammatory and pro-resolving actions.
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Affiliation(s)
- Juliana P Vago
- Experimental Rheumatology, Department of Rheumatology, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, the Netherlands
| | - Flávio A Amaral
- Experimental Rheumatology, Department of Rheumatology, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, the Netherlands; Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Fons A J van de Loo
- Experimental Rheumatology, Department of Rheumatology, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, the Netherlands.
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122
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Hajishengallis G, Chavakis T. DEL-1: a potential therapeutic target in inflammatory and autoimmune disease? Expert Rev Clin Immunol 2021; 17:549-552. [PMID: 33870840 DOI: 10.1080/1744666x.2021.1915771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- George Hajishengallis
- Penn Dental Medicine, Department of Basic and Translational Sciences, University of Pennsylvania, Philadelphia, PA, USA
| | - Triantafyllos Chavakis
- Faculty of Medicine, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
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123
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Tamura H, Maekawa T, Domon H, Hiyoshi T, Hirayama S, Isono T, Sasagawa K, Yonezawa D, Takahashi N, Oda M, Maeda T, Tabeta K, Terao Y. Effects of Erythromycin on Osteoclasts and Bone Resorption via DEL-1 Induction in Mice. Antibiotics (Basel) 2021; 10:antibiotics10030312. [PMID: 33803007 PMCID: PMC8002756 DOI: 10.3390/antibiotics10030312] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/11/2021] [Accepted: 03/16/2021] [Indexed: 01/14/2023] Open
Abstract
Macrolides are used to treat various infectious diseases, including periodontitis. Furthermore, macrolides are known to have immunomodulatory effects; however, the underlying mechanism of their action remains unclear. DEL-1 has emerged as an important factor in homeostatic immunity and osteoclastogenesis. Specifically, DEL-1 is downregulated in periodontitis tissues. Therefore, in the present study, we investigated whether the osteoclastogenesis inhibitory effects of erythromycin (ERM) are mediated through upregulation of DEL-1 expression. We used a ligature-induced periodontitis model in C57BL/6Ncrl wild-type or DEL-1-deficient mice and in vitro cell-based mechanistic studies to investigate how ERM inhibits alveolar bone resorption. As a result of measuring alveolar bone resorption and gene expression in the tooth ligation model, ERM treatment reduced bone loss by increasing DEL-1 expression and decreasing the expression of osteoclast-related factors in wild-type mice. In DEL-1-deficient mice, ERM failed to suppress bone loss and gene expression of osteoclast-related factors. In addition, ERM treatment downregulated osteoclast differentiation and calcium resorption in in vitro experiments with mouse bone marrow-derived macrophages. In conclusion, ERM promotes the induction of DEL-1 in periodontal tissue, which may regulate osteoclastogenesis and decrease inflammatory bone resorption. These findings suggest that ERM may exert immunomodulatory effects in a DEL-1-dependent manner.
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Affiliation(s)
- Hikaru Tamura
- Division of Microbiology and Infectious Diseases, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (H.T.); (T.H.); (S.H.); (T.I.); (K.S.); (Y.T.)
- Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan;
- Division of Periodontology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (N.T.); (K.T.)
| | - Tomoki Maekawa
- Division of Microbiology and Infectious Diseases, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (H.T.); (T.H.); (S.H.); (T.I.); (K.S.); (Y.T.)
- Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan;
- Correspondence: (T.M.); (H.D.); Tel.: +81-25-227-2828 (T.M.); +81-227-2840 (H.D.)
| | - Hisanori Domon
- Division of Microbiology and Infectious Diseases, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (H.T.); (T.H.); (S.H.); (T.I.); (K.S.); (Y.T.)
- Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan;
- Correspondence: (T.M.); (H.D.); Tel.: +81-25-227-2828 (T.M.); +81-227-2840 (H.D.)
| | - Takumi Hiyoshi
- Division of Microbiology and Infectious Diseases, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (H.T.); (T.H.); (S.H.); (T.I.); (K.S.); (Y.T.)
- Division of Periodontology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (N.T.); (K.T.)
| | - Satoru Hirayama
- Division of Microbiology and Infectious Diseases, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (H.T.); (T.H.); (S.H.); (T.I.); (K.S.); (Y.T.)
| | - Toshihito Isono
- Division of Microbiology and Infectious Diseases, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (H.T.); (T.H.); (S.H.); (T.I.); (K.S.); (Y.T.)
| | - Karin Sasagawa
- Division of Microbiology and Infectious Diseases, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (H.T.); (T.H.); (S.H.); (T.I.); (K.S.); (Y.T.)
- Division of Periodontology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (N.T.); (K.T.)
| | - Daisuke Yonezawa
- Division of Oral Science for Health Promotion, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan;
| | - Naoki Takahashi
- Division of Periodontology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (N.T.); (K.T.)
| | - Masataka Oda
- Department of Microbiology and Infection Control Sciences, Kyoto Pharmaceutical University, Yamashita 607-8414, Japan;
| | - Takeyasu Maeda
- Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan;
| | - Koichi Tabeta
- Division of Periodontology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (N.T.); (K.T.)
| | - Yutaka Terao
- Division of Microbiology and Infectious Diseases, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; (H.T.); (T.H.); (S.H.); (T.I.); (K.S.); (Y.T.)
- Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan;
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124
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Hajishengallis G, Lamont RJ. Polymicrobial communities in periodontal disease: Their quasi-organismal nature and dialogue with the host. Periodontol 2000 2021; 86:210-230. [PMID: 33690950 DOI: 10.1111/prd.12371] [Citation(s) in RCA: 128] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/05/2020] [Accepted: 03/28/2020] [Indexed: 12/11/2022]
Abstract
In health, indigenous polymicrobial communities at mucosal surfaces maintain an ecological balance via both inter-microbial and host-microbial interactions that promote their own and the host's fitness, while preventing invasion by exogenous pathogens. However, genetic and acquired destabilizing factors (including immune deficiencies, immunoregulatory defects, smoking, diet, obesity, diabetes and other systemic diseases, and aging) may disrupt this homeostatic balance, leading to selective outgrowth of species with the potential for destructive inflammation. This process, known as dysbiosis, underlies the development of periodontitis in susceptible hosts. The pathogenic process is not linear but involves a positive-feedback loop between dysbiosis and the host inflammatory response. The dysbiotic community is essentially a quasi-organismal entity, where constituent organisms communicate via sophisticated physical and chemical signals and display functional specialization (eg, accessory pathogens, keystone pathogens, pathobionts), which enables polymicrobial synergy and dictates the community's pathogenic potential or nososymbiocity. In this review, we discuss early and recent studies in support of the polymicrobial synergy and dysbiosis model of periodontal disease pathogenesis. According to this concept, disease is not caused by individual "causative pathogens" but rather by reciprocally reinforced interactions between physically and metabolically integrated polymicrobial communities and a dysregulated host inflammatory response.
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Affiliation(s)
- George Hajishengallis
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, USA
| | - Richard J Lamont
- Department of Oral Immunology and Infectious Diseases, School of Dentistry, University of Louisville, Louisville, Kentucky, USA
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125
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Mata R, Yao Y, Cao W, Ding J, Zhou T, Zhai Z, Gao C. The Dynamic Inflammatory Tissue Microenvironment: Signality and Disease Therapy by Biomaterials. RESEARCH 2021; 2021:4189516. [PMID: 33623917 PMCID: PMC7879376 DOI: 10.34133/2021/4189516] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/22/2020] [Indexed: 12/14/2022]
Abstract
Tissue regeneration is an active multiplex process involving the dynamic inflammatory microenvironment. Under a normal physiological framework, inflammation is necessary for the systematic immunity including tissue repair and regeneration as well as returning to homeostasis. Inflammatory cellular response and metabolic mechanisms play key roles in the well-orchestrated tissue regeneration. If this response is dysregulated, it becomes chronic, which in turn causes progressive fibrosis, improper repair, and autoimmune disorders, ultimately leading to organ failure and death. Therefore, understanding of the complex inflammatory multiple player responses and their cellular metabolisms facilitates the latest insights and brings novel therapeutic methods for early diseases and modern health challenges. This review discusses the recent advances in molecular interactions of immune cells, controlled shift of pro- to anti-inflammation, reparative inflammatory metabolisms in tissue regeneration, controlling of an unfavorable microenvironment, dysregulated inflammatory diseases, and emerging therapeutic strategies including the use of biomaterials, which expand therapeutic views and briefly denote important gaps that are still prevailing.
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Affiliation(s)
- Rani Mata
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.,Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou 310058, China
| | - Yuejun Yao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Wangbei Cao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jie Ding
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Tong Zhou
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zihe Zhai
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.,Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou 310058, China
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126
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Li X, Colamatteo A, Kalafati L, Kajikawa T, Wang H, Lim JH, Bdeir K, Chung KJ, Yu X, Fusco C, Porcellini A, De Simone S, Matarese G, Chavakis T, De Rosa V, Hajishengallis G. The DEL-1/β3 integrin axis promotes regulatory T cell responses during inflammation resolution. J Clin Invest 2021; 130:6261-6277. [PMID: 32817592 DOI: 10.1172/jci137530] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 08/11/2020] [Indexed: 02/06/2023] Open
Abstract
FOXP3+CD4+ regulatory T cells (Tregs) are critical for immune homeostasis and respond to local tissue cues, which control their stability and function. We explored here whether developmental endothelial locus-1 (DEL-1), which, like Tregs, increases during resolution of inflammation, promotes Treg responses. DEL-1 enhanced Treg numbers and function at barrier sites (oral and lung mucosa). The underlying mechanism was dissected using mice lacking DEL-1 or expressing a point mutant thereof, or mice with T cell-specific deletion of the transcription factor RUNX1, identified by RNA sequencing analysis of the DEL-1-induced Treg transcriptome. Specifically, through interaction with αvβ3 integrin, DEL-1 promoted induction of RUNX1-dependent FOXP3 expression and conferred stability of FOXP3 expression upon Treg restimulation in the absence of exogenous TGF-β1. Consistently, DEL-1 enhanced the demethylation of the Treg-specific demethylated region (TSDR) in the mouse Foxp3 gene and the suppressive function of sorted induced Tregs. Similarly, DEL-1 increased RUNX1 and FOXP3 expression in human conventional T cells, promoting their conversion into induced Tregs with increased TSDR demethylation, enhanced stability, and suppressive activity. We thus uncovered a DEL-1/αvβ3/RUNX1 axis that promotes Treg responses at barrier sites and offers therapeutic options for modulating inflammatory/autoimmune disorders.
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Affiliation(s)
- Xiaofei Li
- Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Alessandra Colamatteo
- Treg Cell Lab, Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II," Naples, Italy
| | - Lydia Kalafati
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases, Dresden, Germany, and German Cancer Research Center, Heidelberg, Germany
| | - Tetsuhiro Kajikawa
- Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hui Wang
- Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jong-Hyung Lim
- Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Khalil Bdeir
- Department of Pathology and Laboratory Medicine and
| | - Kyoung-Jin Chung
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Xiang Yu
- Department of Biology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Clorinda Fusco
- Treg Cell Lab, Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II," Naples, Italy
| | - Antonio Porcellini
- Dipartimento di Biologia, Università degli Studi di Napoli "Federico II," Complesso Universitario di Monte Santangelo, Naples, Italy
| | - Salvatore De Simone
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale, Consiglio Nazionale delle Ricerche (IEOS-CNR), Naples, Italy
| | - Giuseppe Matarese
- Treg Cell Lab, Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II," Naples, Italy.,Istituto per l'Endocrinologia e l'Oncologia Sperimentale, Consiglio Nazionale delle Ricerche (IEOS-CNR), Naples, Italy
| | - Triantafyllos Chavakis
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Veronica De Rosa
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale, Consiglio Nazionale delle Ricerche (IEOS-CNR), Naples, Italy.,Unità di Neuroimmunologia, Fondazione Santa Lucia, Rome, Italy
| | - George Hajishengallis
- Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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127
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Heffron SP, Weinstock A, Scolaro B, Chen S, Sansbury BE, Marecki G, Rolling CC, El Bannoudi H, Barrett T, Canary JW, Spite M, Berger JS, Fisher EA. Platelet-conditioned media induces an anti-inflammatory macrophage phenotype through EP4. J Thromb Haemost 2021; 19:562-573. [PMID: 33171016 PMCID: PMC7902474 DOI: 10.1111/jth.15172] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 10/24/2020] [Accepted: 10/27/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Platelets are increasingly recognized as immune cells. As such, they are commonly seen to induce and perpetuate inflammation; however, anti-inflammatory activities are increasingly attributed to them. Atherosclerosis is a chronic inflammatory condition. Similar to other inflammatory conditions, the resolution of atherosclerosis requires a shift in macrophages to an M2 phenotype, enhancing their efferocytosis and cholesterol efflux capabilities. OBJECTIVES To assess the effect of platelets on macrophage phenotype. METHODS In several in vitro models employing murine (RAW264.7 and bone marrow-derived macrophages) and human (THP-1 and monocyte-derived macrophages) cells, we exposed macrophages to media in which non-agonized human platelets were cultured for 60 minutes (platelet-conditioned media [PCM]) and assessed the impact on macrophage phenotype and function. RESULTS Across models, we demonstrated that PCM from healthy humans induced a pro-resolving phenotype in macrophages. This was independent of signal transducer and activator of transcription 6 (STAT6), the prototypical pathway for M2 macrophage polarization. Stimulation of the EP4 receptor on macrophages by prostaglandin E2 present in PCM, is at least partially responsible for altered gene expression and associated function of the macrophages-specifically reduced peroxynitrite production, increased efferocytosis and cholesterol efflux capacity, and increased production of pro-resolving lipid mediators (ie, 15R-LXA4 ). CONCLUSIONS Platelet-conditioned media induces an anti-inflammatory, pro-resolving phenotype in macrophages. Our findings suggest that therapies targeting hemostatic properties of platelets, while not influencing pro-resolving, immune-related activities, could be beneficial for the treatment of atherothrombotic disease.
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Affiliation(s)
- Sean P. Heffron
- NYU Langone Health, Leon H. Charney Division of Cardiology, New York, NY, USA
- NYU Langone Health, NYU Center for the Prevention of Cardiovascular Disease, New York, NY, USA
| | - Ada Weinstock
- NYU Langone Health, Leon H. Charney Division of Cardiology, New York, NY, USA
| | - Bianca Scolaro
- NYU Langone Health, Leon H. Charney Division of Cardiology, New York, NY, USA
| | - Shiyu Chen
- NYU Department of Chemistry, New York, NY, USA
| | - Brian E. Sansbury
- Center for Experimental Therapeutics and Reperfusion Injury, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Greg Marecki
- NYU Langone Health, Leon H. Charney Division of Cardiology, New York, NY, USA
| | | | - Hanane El Bannoudi
- NYU Langone Health, Leon H. Charney Division of Cardiology, New York, NY, USA
| | - Tessa Barrett
- NYU Langone Health, Leon H. Charney Division of Cardiology, New York, NY, USA
| | | | - Matthew Spite
- Center for Experimental Therapeutics and Reperfusion Injury, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Jeffrey S. Berger
- NYU Langone Health, Leon H. Charney Division of Cardiology, New York, NY, USA
- NYU Langone Health, NYU Center for the Prevention of Cardiovascular Disease, New York, NY, USA
- NYU Langone Health, Department of Surgery, New York University, New York, NY, USA
| | - Edward A. Fisher
- NYU Langone Health, Leon H. Charney Division of Cardiology, New York, NY, USA
- NYU Langone Health, NYU Center for the Prevention of Cardiovascular Disease, New York, NY, USA
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128
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Braune J, Lindhorst A, Fröba J, Hobusch C, Kovacs P, Blüher M, Eilers J, Bechmann I, Gericke M. Multinucleated Giant Cells in Adipose Tissue Are Specialized in Adipocyte Degradation. Diabetes 2021; 70:538-548. [PMID: 33158932 DOI: 10.2337/db20-0293] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 10/30/2020] [Indexed: 11/13/2022]
Abstract
Obesity is associated with chronic low-grade inflammation of visceral adipose tissue (AT) characterized by an increasing number of AT macrophages (ATMs) and linked to type 2 diabetes. AT inflammation is histologically indicated by the formation of so-called crown-like structures, as ATMs accumulate around dying adipocytes, and the occurrence of multinucleated giant cells (MGCs). However, to date, the function of MGCs in obesity is unknown. Therefore, the aim of this study was to characterize MGCs in AT and unravel the function of these cells. We demonstrated that MGCs occurred in obese patients and after 24 weeks of a high-fat diet in mice, accompanying signs of AT inflammation and then representing ∼3% of ATMs in mice. Mechanistically, we found evidence that adipocyte death triggered MGC formation. Most importantly, MGCs in obese AT had a higher capacity to phagocytize oversized particles, such as adipocytes, as shown by live imaging of AT, 45-µm bead uptake ex vivo, and higher lipid content in vivo. Finally, we showed that interleukin-4 treatment was sufficient to increase the number of MGCs in AT, whereas other factors may be more important for endogenous MGC formation in vivo. Most importantly, our data suggest that MGCs are specialized for clearance of dead adipocytes in obesity.
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Affiliation(s)
- Julia Braune
- Institute of Anatomy and Cell Biology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Andreas Lindhorst
- Institute of Anatomy and Cell Biology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| | - Janine Fröba
- Institute of Anatomy and Cell Biology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| | | | - Peter Kovacs
- Medical Department III, Leipzig University, Leipzig, Germany
| | - Matthias Blüher
- Medical Department III, Leipzig University, Leipzig, Germany
| | - Jens Eilers
- Carl-Ludwig Institute of Physiology, Leipzig University, Leipzig, Germany
| | - Ingo Bechmann
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| | - Martin Gericke
- Institute of Anatomy and Cell Biology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
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129
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Local and systemic mechanisms linking periodontal disease and inflammatory comorbidities. Nat Rev Immunol 2021; 21:426-440. [PMID: 33510490 PMCID: PMC7841384 DOI: 10.1038/s41577-020-00488-6] [Citation(s) in RCA: 586] [Impact Index Per Article: 195.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2020] [Indexed: 12/13/2022]
Abstract
Periodontitis, a major inflammatory disease of the oral mucosa, is epidemiologically associated with other chronic inflammation-driven disorders, including cardio-metabolic, neurodegenerative and autoimmune diseases and cancer. Emerging evidence from interventional studies indicates that local treatment of periodontitis ameliorates surrogate markers of comorbid conditions. The potential causal link between periodontitis and its comorbidities is further strengthened by recent experimental animal studies establishing biologically plausible and clinically consistent mechanisms whereby periodontitis could initiate or aggravate a comorbid condition. This multi-faceted ‘mechanistic causality’ aspect of the link between periodontitis and comorbidities is the focus of this Review. Understanding how certain extra-oral pathologies are affected by disseminated periodontal pathogens and periodontitis-associated systemic inflammation, including adaptation of bone marrow haematopoietic progenitors, may provide new therapeutic options to reduce the risk of periodontitis-associated comorbidities. Periodontitis has been causally linked to the development of other chronic inflammatory diseases outside the oral mucosa. In this Review, George Hajishengallis and Triantafyllos Chavakis consider the molecular basis of these links.
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130
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Abstract
Periodontitis, one of the most common infectious diseases in humans, is characterized by inflammation of the periodontal tissue and subsequent destruction of the alveolar bone, which ultimately leads to tooth loss. Recently, it was revealed that the osteoclastic bone damage that occurs during periodontitis is dependent on the receptor activator of NF-kB ligand (RANKL) produced by osteoblastic cells and periodontal ligament cells. Immune cells provide essential cues for the RANKL induction that takes place during periodontal inflammation. The knowledge accumulated and experimental tools established in the field of "osteoimmunology" have made crucial contributions to a better understanding of periodontitis pathogenesis and, reciprocally, the investigation of periodontitis has provided important insights into the field. This review discusses the molecular mechanisms underlying periodontal bone loss by focusing on the osteoimmune interactions and RANKL.
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Affiliation(s)
- Masayuki Tsukasaki
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
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131
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Margraf A, Ludwig N, Zarbock A, Rossaint J. Systemic Inflammatory Response Syndrome After Surgery: Mechanisms and Protection. Anesth Analg 2020; 131:1693-1707. [PMID: 33186158 DOI: 10.1213/ane.0000000000005175] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The immune system is an evolutionary hallmark of higher organisms that defends the host against invading pathogens and exogenous infections. This defense includes the recruitment of immune cells to the site of infection and the initiation of an inflammatory response to contain and eliminate pathogens. However, an inflammatory response may also be triggered by noninfectious stimuli such as major surgery, and, in case of an overshooting, still not comprehensively understood reaction, lead to tissue destruction and organ dysfunction. Unfortunately, in some cases, the immune system may not effectively distinguish between stimuli elicited by major surgery, which ideally should only require a modest inflammatory response, and those elicited by trauma or pathogenic infection. Surgical procedures thus represent a potential trigger for systemic inflammation that causes the secretion of proinflammatory cytokines, endothelial dysfunction, glycocalyx damage, activation of neutrophils, and ultimately tissue and multisystem organ destruction. In this review, we discuss and summarize currently available mechanistic knowledge on surgery-associated systemic inflammation, demarcation toward other inflammatory complications, and possible therapeutic options. These options depend on uncovering the underlying mechanisms and could include pharmacologic agents, remote ischemic preconditioning protocols, cytokine blockade or clearance, and optimization of surgical procedures, anesthetic regimens, and perioperative inflammatory diagnostic assessment. Currently, a large gap between basic science and clinically confirmed data exists due to a limited evidence base of translational studies. We thus summarize important steps toward the understanding of the precise time- and space-regulated processes in systemic perioperative inflammation.
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Affiliation(s)
- Andreas Margraf
- From the Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Münster, Germany
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132
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Fu YW, Li L, Wang XQ, Zhou Y, Zhu LF, Mei YM, Xu Y. The inhibitory effect of the deubiquitinase cylindromatosis (CYLD) on inflammatory responses in human gingival fibroblasts. Oral Dis 2020; 27:1487-1497. [PMID: 33031609 DOI: 10.1111/odi.13672] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 09/22/2020] [Accepted: 10/01/2020] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Experiments were performed to evaluate CYLD expression in human gingival tissue samples and to examine the effects of CYLD on inflammatory responses in lipopolysaccharide (LPS)- or TNF-α-stimulated human gingival fibroblasts (HGFs). METHODS Immunohistochemistry for CYLD and p65 expression was performed with healthy and inflamed gingival tissue samples. siRNA was used to knock down the expression of CYLD in HGFs. Upon LPS or TNF-α stimulation, NF-κB activation was detected in control and CYLD-knockdown HGFs. RT-PCR was applied to determine gene expression. Western blot analyses were employed to assess protein expression. Immunofluorescence staining was carried out to evaluate the nuclear translocation of p65. RESULTS Immunohistochemical staining showed the expression of CYLD in human gingival tissues. In addition, CYLD protein expression was reduced in inflamed gingival tissue samples compared with healthy tissue samples. CYLD knockdown greatly enhanced the mRNA expression of proinflammatory cytokines in LPS- or TNF-α-stimulated HGFs. Furthermore, knocking down CYLD expression increased LPS-stimulated NF-κB activation in HGFs. Unexpectedly, CYLD knockdown did not affect TNF-α-induced NF-κB activation. CONCLUSIONS Our results suggest that CYLD participates in periodontal inflammatory responses by negatively regulating LPS-induced NF-κB signalling.
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Affiliation(s)
- Yong-Wei Fu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China.,Department of Stomatology, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Lu Li
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - Xiao-Qian Wang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - Yi Zhou
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - Li-Fang Zhu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - You-Min Mei
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - Yan Xu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
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133
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Han X, Zhao ZA, Yan S, Lei W, Wu H, Lu XA, Chen Y, Li J, Wang Y, Yu M, Wang Y, Zheng Y, Wang H, Shen Z, Hu S. CXADR-like membrane protein protects against heart injury by preventing excessive pyroptosis after myocardial infarction. J Cell Mol Med 2020; 24:13775-13788. [PMID: 33084169 PMCID: PMC7753842 DOI: 10.1111/jcmm.15955] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 08/24/2020] [Accepted: 09/18/2020] [Indexed: 12/17/2022] Open
Abstract
Myocardial infarction (MI) results in cardiomyocyte death and ultimately leads to heart failure. Pyroptosis is a type of the inflammatory programmed cell death that has been found in various diseased tissues. However, the role of pyroptosis in MI heart remains unknown. Here, we showed that CXADR‐like membrane protein (CLMP) was involved in pyroptosis in the mouse MI heart. Our data showed that CLMP was strongly expressed in fibroblasts of the infarcted mouse hearts. The Clmp+/− mice showed more serious myocardial fibrosis and ventricular dysfunction post‐MI than wild‐type (Clmp+/+) mice, indicating a protective effect of the fibroblast‐expressed CLMP against MI‐induced heart damage. Transcriptome analyses by RNA sequencing indicated that Il‐1β mRNA was significantly increased in the MI heart of Clmp+/− mouse, which indicated a more serious inflammatory response. Meanwhile, cleaved caspase‐1 and Gasdermin D were significantly increased in the Clmp+/− MI heart, which demonstrated enhanced pyroptosis in the Clmp knockdown heart. Further analysis revealed that the pyroptosis mainly occurred in cardiac fibroblasts (CFs). Compared to wild‐type fibroblasts, Clmp+/− CFs showed more serious pyroptosis and inflammatory after LPS plus nigericin treatment. Collectively, our results indicate that CLMP participates in the pyroptotic and inflammatory response of CFs in MI heart. We have provided a novel pyroptotic insight into the ischaemic heart, which might hold substantial potential for the treatment of MI.
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Affiliation(s)
- Xinglong Han
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
| | - Zhen-Ao Zhao
- Institute of Microcirculation & Department of Pathophysiology of Basic Medical College, Hebei North University, Zhangjiakou, China.,Hebei Key Laboratory of Critical Disease Mechanism and Intervention, Zhangjiakou, China
| | - Shiping Yan
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
| | - Wei Lei
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
| | - Hongchun Wu
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
| | - Xing-Ai Lu
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
| | - Yueqiu Chen
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
| | - Jingjing Li
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
| | - Yaning Wang
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
| | - Miao Yu
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
| | - Yongming Wang
- MOE Key Laboratory of Contemporary Anthropology at School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yufang Zheng
- Obstetrics and Gynecology Hospital, State Key Laboratory of Genetic Engineering at School of Life Sciences, Institute of Reproduction and Development, Fudan University, Shanghai, China.,Institute of Developmental Biology & Molecular Medicine, Fudan University, Shanghai, China
| | - Hongyan Wang
- Obstetrics and Gynecology Hospital, State Key Laboratory of Genetic Engineering at School of Life Sciences, Institute of Reproduction and Development, Fudan University, Shanghai, China.,Key Laboratory of Reproduction Regulation of NPFPC, Collaborative Innovation Center of Genetics and Development, Fudan University, Shanghai, China.,Children's Hospital of Fudan University, Shanghai, China
| | - Zhenya Shen
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
| | - Shijun Hu
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, State Key Laboratory of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, China
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134
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Hajishengallis G, Chavakis T, Lambris JD. Current understanding of periodontal disease pathogenesis and targets for host-modulation therapy. Periodontol 2000 2020; 84:14-34. [PMID: 32844416 DOI: 10.1111/prd.12331] [Citation(s) in RCA: 166] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Recent advances indicate that periodontitis is driven by reciprocally reinforced interactions between a dysbiotic microbiome and dysregulated inflammation. Inflammation is not only a consequence of dysbiosis but, via mediating tissue dysfunction and damage, fuels further growth of selectively dysbiotic communities of bacteria (inflammophiles), thereby generating a self-sustained feed-forward loop that perpetuates the disease. These considerations provide a strong rationale for developing adjunctive host-modulation therapies for the treatment of periodontitis. Such host-modulation approaches aim to inhibit harmful inflammation and promote its resolution or to interfere directly with downstream effectors of connective tissue and bone destruction. This paper reviews diverse strategies targeted to modulate the host periodontal response and discusses their mechanisms of action, perceived safety, and potential for clinical application.
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Affiliation(s)
- George Hajishengallis
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Triantafyllos Chavakis
- Department of Clinical Pathobiochemistry, Faculty of Medicine, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - John D Lambris
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
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135
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Shen-Hong-Tong-Luo Formula Attenuates Macrophage Inflammation and Lipid Accumulation through the Activation of the PPAR- γ/LXR- α/ABCA1 Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:3426925. [PMID: 33082908 PMCID: PMC7556105 DOI: 10.1155/2020/3426925] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 07/29/2020] [Accepted: 08/04/2020] [Indexed: 12/18/2022]
Abstract
Atherosclerosis (AS) is the killer of human health and longevity, which is majorly caused by oxidized lipoproteins that attack macrophages in the endarterium. The Shen-Hong-Tong-Luo (SHTL) formula has shown great clinical efficacy and vascular protective effect for over 30 years in China, to attenuate AS progression. However, its pharmacological mechanism needs more investigation. In this study, we first investigated the chemical composition of SHTL by fingerprint analysis using high-performance liquid chromatography. In primary mouse peritoneal macrophages induced by lipopolysaccharide (LPS), we found that SHTL pretreatment suppressed reactive oxygen species accumulation and reversed the increases of the inflammatory factors, TNF-α and IL-6. Moreover, lipid accumulation induced by oxidized low-density lipoprotein (Ox-LDL) in macrophages was inhibited by SHTL. Additionally, network pharmacology was used to predict the potential targets of SHTL as the PPAR-γ/LXR-α/ABCA1 signaling pathway, which was validated in macrophages and ApoE-/- mice by histopathological staining, qPCR, and Western blot analysis. Importantly, the protective effect of SHTL in the LPS- and Ox-LDL-induced macrophages against inflammation and lipid accumulation was attenuated by GW9662, a PPAR-γ antagonist, which confirmed the prediction results of network pharmacology. In summary, these results indicated that SHTL pretreatment reduced inflammation and lipid accumulation of macrophages by activating the PPAR-γ/LXR-α/ABCA1 pathway, which may provide a new insight into the mechanism of SHTL in the suppression of AS progression.
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136
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Haskamp S, Bruns H, Hahn M, Hoffmann M, Gregor A, Löhr S, Hahn J, Schauer C, Ringer M, Flamann C, Frey B, Lesner A, Thiel CT, Ekici AB, von Hörsten S, Aßmann G, Riepe C, Euler M, Schäkel K, Philipp S, Prinz JC, Mößner R, Kersting F, Sticherling M, Sefiani A, Lyahyai J, Sondermann W, Oji V, Schulz P, Wilsmann-Theis D, Sticht H, Schett G, Reis A, Uebe S, Frey S, Hüffmeier U. Myeloperoxidase Modulates Inflammation in Generalized Pustular Psoriasis and Additional Rare Pustular Skin Diseases. Am J Hum Genet 2020; 107:527-538. [PMID: 32758447 PMCID: PMC7477008 DOI: 10.1016/j.ajhg.2020.07.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 07/01/2020] [Indexed: 12/12/2022] Open
Abstract
Generalized pustular psoriasis (GPP) is a severe multi-systemic inflammatory disease characterized by neutrophilic pustulosis and triggered by pro-inflammatory IL-36 cytokines in skin. While 19%–41% of affected individuals harbor bi-allelic mutations in IL36RN, the genetic cause is not known in most cases. To identify and characterize new pathways involved in the pathogenesis of GPP, we performed whole-exome sequencing in 31 individuals with GPP and demonstrated effects of mutations in MPO encoding the neutrophilic enzyme myeloperoxidase (MPO). We discovered eight MPO mutations resulting in MPO -deficiency in neutrophils and monocytes. MPO mutations, primarily those resulting in complete MPO deficiency, cumulatively associated with GPP (p = 1.85E−08; OR = 6.47). The number of mutant MPO alleles significantly differed between 82 affected individuals and >4,900 control subjects (p = 1.04E−09); this effect was stronger when including IL36RN mutations (1.48E−13) and correlated with a younger age of onset (p = 0.0018). The activity of four proteases, previously implicated as activating enzymes of IL-36 precursors, correlated with MPO deficiency. Phorbol-myristate-acetate-induced formation of neutrophil extracellular traps (NETs) was reduced in affected cells (p = 0.015), and phagocytosis assays in MPO-deficient mice and human cells revealed altered neutrophil function and impaired clearance of neutrophils by monocytes (efferocytosis) allowing prolonged neutrophil persistence in inflammatory skin. MPO mutations contribute significantly to GPP’s pathogenesis. We implicate MPO as an inflammatory modulator in humans that regulates protease activity and NET formation and modifies efferocytosis. Our findings indicate possible implications for the application of MPO inhibitors in cardiovascular diseases. MPO and affected pathways represent attractive targets for inducing resolution of inflammation in neutrophil-mediated skin diseases.
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137
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Nagata S, Segawa K. Sensing and clearance of apoptotic cells. Curr Opin Immunol 2020; 68:1-8. [PMID: 32853880 DOI: 10.1016/j.coi.2020.07.007] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 07/07/2020] [Accepted: 07/27/2020] [Indexed: 12/14/2022]
Abstract
Macrophages specifically engulf apoptotic cells but not healthy cells. Phosphatidylserine (PtdSer) is localized at the inner leaflet of plasma membranes as a result of the action of flippases (ATP11A and 11C). When cells undergo apoptosis, caspase 3 cleaves and inactivates the flippases, while simultaneously cleaving XKR8 to activate its phospholipid scramblase activity. PtdSer is thus swiftly and irreversibly exposed to the cell surface as an 'eat me' signal. Tissue resident macrophages recognize the apoptotic cells using a PtdSer-receptor TIM4 and engulf them with TAM tyrosine-kinase receptors, and integrins. The PtdSer 'eat me' signal appears to override 'don't eat me' signals in most cases.
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Affiliation(s)
- Shigekazu Nagata
- Laboratory of Biochemistry & Immunology, World Premier International Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan.
| | - Katsumori Segawa
- Laboratory of Biochemistry & Immunology, World Premier International Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan
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138
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Nagai K, Ideguchi H, Kajikawa T, Li X, Chavakis T, Cheng J, Messersmith PB, Heber-Katz E, Hajishengallis G. An injectable hydrogel-formulated inhibitor of prolyl-4-hydroxylase promotes T regulatory cell recruitment and enhances alveolar bone regeneration during resolution of experimental periodontitis. FASEB J 2020; 34:13726-13740. [PMID: 32812255 DOI: 10.1096/fj.202001248r] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 07/29/2020] [Accepted: 07/31/2020] [Indexed: 12/16/2022]
Abstract
The hypoxia-inducible factor 1α (HIF-1α) is critically involved in tissue regeneration. Hence, the pharmacological prevention of HIF-1α degradation by prolyl hydroxylase (PHD) under normoxic conditions is emerging as a promising option in regenerative medicine. Using a mouse model of ligature-induced periodontitis and resolution, we tested the ability of an injectable hydrogel-formulated PHD inhibitor, 1,4-dihydrophenonthrolin-4-one-3-carboxylic acid (1,4-DPCA/hydrogel), to promote regeneration of alveolar bone lost owing to experimental periodontitis. Mice injected subcutaneously with 1,4-DPCA/hydrogel at the onset of periodontitis resolution displayed significantly increased gingival HIF-1α protein levels and bone regeneration, as compared to mice treated with vehicle control. The 1,4-DPCA/hydrogel-induced increase in bone regeneration was associated with elevated expression of osteogenic genes, decreased expression of pro-inflammatory cytokine genes, and increased abundance of FOXP3+ T regulatory (Treg) cells in the periodontal tissue. The enhancing effect of 1,4-DPCA/hydrogel on Treg cell accumulation and bone regeneration was reversed by AMD3100, an antagonist of the chemokine receptor CXCR4 that mediates Treg cell recruitment. In conclusion, the administration of 1,4-DPCA/hydrogel at the onset of periodontitis resolution promotes CXCR4-dependent accumulation of Treg cells and alveolar bone regeneration, suggesting a novel approach for regaining bone lost due to periodontitis.
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Affiliation(s)
- Kosuke Nagai
- Laboratory of Innate Immunity and Inflammation, Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Institute of Clinical Chemistry and Laboratory Medicine, Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Hidetaka Ideguchi
- Laboratory of Innate Immunity and Inflammation, Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Pathophysiology - Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tetsuhiro Kajikawa
- Laboratory of Innate Immunity and Inflammation, Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Xiaofei Li
- Laboratory of Innate Immunity and Inflammation, Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Triantafyllos Chavakis
- Institute of Clinical Chemistry and Laboratory Medicine, Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Jing Cheng
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA.,Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA, USA.,Formulation Group in R&D, Alcon, Duluth, GA, USA
| | - Phillip B Messersmith
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA.,Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA, USA
| | - Ellen Heber-Katz
- Laboratory of Regenerative Medicine, Lankenau Institute for Medical Research, Wynnewood, PA, USA
| | - George Hajishengallis
- Laboratory of Innate Immunity and Inflammation, Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
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139
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Maekawa T, Tamura H, Domon H, Hiyoshi T, Isono T, Yonezawa D, Hayashi N, Takahashi N, Tabeta K, Maeda T, Oda M, Ziogas A, Alexaki VI, Chavakis T, Terao Y, Hajishengallis G. Erythromycin inhibits neutrophilic inflammation and mucosal disease by upregulating DEL-1. JCI Insight 2020; 5:136706. [PMID: 32603314 DOI: 10.1172/jci.insight.136706] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 06/24/2020] [Indexed: 02/06/2023] Open
Abstract
Macrolide antibiotics exert antiinflammatory effects; however, little is known regarding their immunomodulatory mechanisms. In this study, using 2 distinct mouse models of mucosal inflammatory disease (LPS-induced acute lung injury and ligature-induced periodontitis), we demonstrated that the antiinflammatory action of erythromycin (ERM) is mediated through upregulation of the secreted homeostatic protein developmental endothelial locus-1 (DEL-1). Consistent with the anti-neutrophil recruitment action of endothelial cell-derived DEL-1, ERM inhibited neutrophil infiltration in the lungs and the periodontium in a DEL-1-dependent manner. Whereas ERM (but not other antibiotics, such as josamycin and penicillin) protected against lethal pulmonary inflammation and inflammatory periodontal bone loss, these protective effects of ERM were abolished in Del1-deficient mice. By interacting with the growth hormone secretagogue receptor and activating JAK2 in human lung microvascular endothelial cells, ERM induced DEL-1 transcription that was mediated by MAPK p38 and was CCAAT/enhancer binding protein-β dependent. Moreover, ERM reversed IL-17-induced inhibition of DEL-1 transcription, in a manner that was dependent not only on JAK2 but also on PI3K/AKT signaling. Because DEL-1 levels are severely reduced in inflammatory conditions and with aging, the ability of ERM to upregulate DEL-1 may lead to a novel approach for the treatment of inflammatory and aging-related diseases.
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Affiliation(s)
- Tomoki Maekawa
- Center for Advanced Oral Science.,Division of Microbiology and Infectious Diseases.,Division of Periodontology, and
| | - Hikaru Tamura
- Center for Advanced Oral Science.,Division of Microbiology and Infectious Diseases.,Division of Periodontology, and
| | - Hisanori Domon
- Center for Advanced Oral Science.,Division of Microbiology and Infectious Diseases
| | - Takumi Hiyoshi
- Center for Advanced Oral Science.,Division of Microbiology and Infectious Diseases
| | | | - Daisuke Yonezawa
- Center for Advanced Oral Science.,Division of Oral Science for Health Promotion, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Naoki Hayashi
- Department of Microbiology and Infection Control Sciences, Kyoto Pharmaceutical University, Yamashina, Japan
| | | | | | - Takeyasu Maeda
- Center for Advanced Oral Science.,Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Masataka Oda
- Department of Microbiology and Infection Control Sciences, Kyoto Pharmaceutical University, Yamashina, Japan
| | - Athanasios Ziogas
- Institute of Clinical Chemistry and Laboratory Medicine, Faculty of Medicine and University Clinic Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Vasileia Ismini Alexaki
- Institute of Clinical Chemistry and Laboratory Medicine, Faculty of Medicine and University Clinic Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Triantafyllos Chavakis
- Institute of Clinical Chemistry and Laboratory Medicine, Faculty of Medicine and University Clinic Carl Gustav Carus, TU Dresden, Dresden, Germany.,Centre for Cardiovascular Science, Queen's Medical Research Institute, College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Yutaka Terao
- Center for Advanced Oral Science.,Division of Microbiology and Infectious Diseases
| | - George Hajishengallis
- Laboratory of Innate Immunity and Inflammation, Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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140
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Du T, Yang CL, Ge MR, Liu Y, Zhang P, Li H, Li XL, Li T, Liu YD, Dou YC, Yang B, Duan RS. M1 Macrophage Derived Exosomes Aggravate Experimental Autoimmune Neuritis via Modulating Th1 Response. Front Immunol 2020; 11:1603. [PMID: 32793234 PMCID: PMC7390899 DOI: 10.3389/fimmu.2020.01603] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 06/16/2020] [Indexed: 12/29/2022] Open
Abstract
Guillain–Barré syndrome (GBS), an immune-mediated disorder affecting the peripheral nervous system, is the most common and severe acute paralytic neuropathy. GBS remains to be potentially life-threatening and disabling despite the increasing availability of current standard therapeutic regimens. Therefore, more targeted therapeutics are in urgent need. Macrophages have been implicated in both initiation and resolution of experimental autoimmune neuritis (EAN), the animal model of GBS, but the exact mechanisms remain to be elucidated. It has been increasingly appreciated that exosomes, a type of extracellular vesicles (EVs), are of importance for functions of macrophages. Nevertheless, the roles of macrophage derived exosomes in EAN/GBS remain unclear. Here we determined the effects of macrophage derived exosomes on the development of EAN in Lewis rats. M1 macrophage derived exosomes (M1 exosomes) were found to aggravate EAN via boosting Th1 and Th17 response, while M2 macrophage derived exosomes (M2 exosomes) showed potentials to mitigate disease severity via a mechanism bypassing Th1 and Th17 response. Besides, both M1 and M2 exosomes increased germinal center reactions in EAN. Further in vitro studies confirmed that M1 exosomes could directly promote IFN-γ production in T cells and M2 exosomes were not capable of inhibiting IFN-γ expression. Thus, our data identify a previously undescribed means that M1 macrophages amplify Th1 response via exosomes and provide novel insights into the crosstalk between macrophages and T cells as well.
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Affiliation(s)
- Tong Du
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Chun-Lin Yang
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Meng-Ru Ge
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Ying Liu
- Department of Neuronal Electrophysiology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Peng Zhang
- Department of Neurology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Heng Li
- Department of Neurology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Xiao-Li Li
- Department of Neurology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Tao Li
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Yu-Dong Liu
- Department of Neuronal Electrophysiology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Ying-Chun Dou
- College of Basic Medical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Bing Yang
- Department of Neurology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Rui-Sheng Duan
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China.,Department of Neurology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
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141
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Shen Z, Kuang S, Zhang Y, Yang M, Qin W, Shi X, Lin Z. Chitosan hydrogel incorporated with dental pulp stem cell-derived exosomes alleviates periodontitis in mice via a macrophage-dependent mechanism. Bioact Mater 2020; 5:1113-1126. [PMID: 32743122 PMCID: PMC7371600 DOI: 10.1016/j.bioactmat.2020.07.002] [Citation(s) in RCA: 138] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/01/2020] [Accepted: 07/02/2020] [Indexed: 02/06/2023] Open
Abstract
Periodontitis is caused by host immune-inflammatory response to bacterial insult. A high proportion of pro-inflammatory macrophages to anti-inflammatory macrophages leads to the pathogenesis of periodontitis. As stem cell-derived exosomes can modulate macrophage phenotype, dental pulp stem cell-derived exosomes (DPSC-Exo) can effectively treat periodontitis. In this study, we demonstrated that DPSC-Exo-incorporated chitosan hydrogel (DPSC-Exo/CS) can accelerate the healing of alveolar bone and the periodontal epithelium in mice with periodontitis. Gene Ontology (GO) term enrichment analysis showed that treatment with DPSC-Exo/CS ameliorated periodontal lesion by suppressing periodontal inflammation and modulating the immune response. Specifically, DPSC-Exo/CS facilitated macrophages to convert from a pro-inflammatory phenotype to an anti-inflammatory phenotype in the periodontium of mice with periodontitis, the mechanism of which could be associated with miR-1246 in DPSC-Exo. These results not only shed light on the therapeutic mechanism of DPSC-Exo/CS but also provide the basis for developing an effective therapeutic approach for periodontitis. DPSC-Exo/CS accelerates the healing of periodontal tissues in mice with periodontitis. DPSC-Exo/CS ameliorates periodontitis by modulating the immune response. The immunomodulatory effects of DPSC-Exo/CS are associated with miR-1246 in DPSC-Exo. DPSC-Exo/CS is a promising therapy for periodontitis.
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Affiliation(s)
- Zongshan Shen
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Shuhong Kuang
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yong Zhang
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Mingmei Yang
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Wei Qin
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xuetao Shi
- National Engineering Research Centre for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, China
| | - Zhengmei Lin
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
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142
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Filep JG, Ariel A. Neutrophil heterogeneity and fate in inflamed tissues: implications for the resolution of inflammation. Am J Physiol Cell Physiol 2020; 319:C510-C532. [PMID: 32667864 DOI: 10.1152/ajpcell.00181.2020] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Neutrophils are polymorphonuclear leukocytes that play a central role in host defense against infection and tissue injury. They are rapidly recruited to the inflamed site and execute a variety of functions to clear invading pathogens and damaged cells. However, many of their defense mechanisms are capable of inflicting collateral tissue damage. Neutrophil-driven inflammation is a unifying mechanism underlying many common diseases. Efficient removal of neutrophils from inflammatory loci is critical for timely resolution of inflammation and return to homeostasis. Accumulating evidence challenges the classical view that neutrophils represent a homogeneous population and that halting neutrophil influx is sufficient to explain their rapid decline within inflamed loci during the resolution of protective inflammation. Hence, understanding the mechanisms that govern neutrophil functions and their removal from the inflammatory locus is critical for minimizing damage to the surrounding tissue and for return to homeostasis. In this review, we briefly address recent advances in characterizing neutrophil phenotypic and functional heterogeneity and the molecular mechanisms that determine the fate of neutrophils within inflammatory loci and the outcome of the inflammatory response. We also discuss how these mechanisms may be harnessed as potential therapeutic targets to facilitate resolution of inflammation.
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Affiliation(s)
- János G Filep
- Department of Pathology and Cell Biology, University of Montreal and Research Center, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
| | - Amiram Ariel
- Departmentof Biology and Human Biology, University of Haifa, Haifa, Israel
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143
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Maraux M, Gaillardet A, Gally A, Saas P, Cherrier T. Human primary neutrophil mRNA does not contaminate human resolving macrophage mRNA after efferocytosis. J Immunol Methods 2020; 483:112810. [PMID: 32592772 DOI: 10.1016/j.jim.2020.112810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 05/20/2020] [Accepted: 06/15/2020] [Indexed: 02/07/2023]
Abstract
The ingestion of apoptotic corpses by macrophages, a process called efferocytosis, is a crucial step in inflammation resolution, since it alters macrophage phenotype toward a pro-resolving profile to foil inflammation and to favor tissue repair. Up to now, the resolving macrophages remain poorly characterized, especially in humans. Global investigations, like RNA sequencing, would be very helpful to unravel some features of these elusive cells. Nonetheless, these inquiries may be challenging in a single-species model, since the fate of ingested mRNA remains unknown and may hinder any subsequent mRNA investigations in the phagocyte. A full human model consisting of primary human neutrophil and primary human monocyte-derived macrophage co-culture was set up several decades ago to mimic in vitro the efferocytosis process. However, to our knowledge, this model has not been characterized as a suitable model to perform global mRNA investigations. Indeed, the extent of ingested neutrophil mRNA contamination has not been assessed in resolving macrophages. This work answers to this crucial question. Indeed, based on the protocols presented in this article, we demonstrate that neutrophil mRNA is severely degraded and is not able to cross-contaminate resolving macrophage mRNA, contrary to apoptotic human peripheral blood derived mononuclear cell (PBMC) or apoptotic leukemic Jurkat cell mRNA. Moreover, this allogenic co-culture system does not favor neither neutrophil activation nor macrophage pro-inflammatory cytokine release. Collectively, we highlight that this model of primary human neutrophil and primary human monocyte-derived macrophage co-culture is the best model for mRNA investigations in human resolving macrophages to help improving our knowledge on these crucial cells.
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Affiliation(s)
- M Maraux
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, F-25000 Besançon, France
| | - A Gaillardet
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, F-25000 Besançon, France
| | - A Gally
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, F-25000 Besançon, France
| | - P Saas
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, F-25000 Besançon, France
| | - T Cherrier
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, F-25000 Besançon, France.
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144
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Magán-Fernández A, Rasheed Al-Bakri SM, O’Valle F, Benavides-Reyes C, Abadía-Molina F, Mesa F. Neutrophil Extracellular Traps in Periodontitis. Cells 2020; 9:cells9061494. [PMID: 32575367 PMCID: PMC7349145 DOI: 10.3390/cells9061494] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 02/08/2023] Open
Abstract
Neutrophils are key cells of the immune system and have a decisive role in fighting foreign pathogens in infectious diseases. Neutrophil extracellular traps (NETs) consist of a mesh of DNA enclosing antimicrobial peptides and histones that are released into extracellular space following neutrophil response to a wide range of stimuli, such as pathogens, host-derived mediators and drugs. Neutrophils can remain functional after NET formation and are important for periodontal homeostasis. Periodontitis is an inflammatory multifactorial disease caused by a dysbiosis state between the gingival microbiome and the immune response of the host. The pathogenesis of periodontitis includes an immune-inflammatory component in which impaired NET formation and/or elimination can be involved, contributing to an exacerbated inflammatory reaction and to the destruction of gingival tissue. In this review, we summarize the current knowledge about the role of NETs in the pathogenesis of periodontitis.
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Affiliation(s)
- Antonio Magán-Fernández
- Periodontology Department, School of Dentistry, University of Granada, 18071 Granada, Spain; (A.M.-F.); (S.M.R.A.-B.); (F.M.)
| | - Sarmad Muayad Rasheed Al-Bakri
- Periodontology Department, School of Dentistry, University of Granada, 18071 Granada, Spain; (A.M.-F.); (S.M.R.A.-B.); (F.M.)
| | - Francisco O’Valle
- Pathology Department, School of Medicine (IBIMER, CIBM), University of Granada, 18071 Granada, Spain;
- Biosanitary Research Institute (IBS-GRANADA), University of Granada, 18012 Granada, Spain
| | - Cristina Benavides-Reyes
- Department of Operative Dentistry, School of Dentistry, University of Granada, 18071 Granada, Spain
- Correspondence: ; Tel.: +34-9-5824-0654
| | - Francisco Abadía-Molina
- Department of Cell Biology, University of Granada, 18071 Granada, Spain;
- INYTA, Institute of Nutrition and Food Technology “José Mataix”, University of Granada, Armilla, 18100 Granada, Spain
| | - Francisco Mesa
- Periodontology Department, School of Dentistry, University of Granada, 18071 Granada, Spain; (A.M.-F.); (S.M.R.A.-B.); (F.M.)
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145
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Li D, Feng Y, Tang H, Huang L, Tong Z, Hu C, Chen X, Tan J. A Simplified and Effective Method for Generation of Experimental Murine Periodontitis Model. Front Bioeng Biotechnol 2020; 8:444. [PMID: 32523937 PMCID: PMC7261919 DOI: 10.3389/fbioe.2020.00444] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 04/17/2020] [Indexed: 12/12/2022] Open
Abstract
Periodontitis, a common disease that can lead to bone destruction, periodontal attachment loss, and tooth loss, is the major cause for oral tissue engineering. Experimental periodontitis is a suitable disease-model for studying bone regeneration and the potential therapeutic role of biomaterials on periodontal tissue engineering, as this in vivo model could be employed to mimic the natural host response under bacteria-caused oral pathological environments. Although large animals with ligature-induced periodontitis have mostly been used for experiments, a mouse model is a better choice for several reasons. Inserting ligature threads through the interproximal space between the teeth is the key step in establishing a periodontitis model, and it is easy to achieve in large animals, but difficult in mice due to the limited operating space. In this work, we provide a new and proven approach for periodontitis induction in mice using C+ nickel-titanium root canal files and stainless-steel ligature wires. The validity of this method was assessed by evaluating alveolar bone loss via micro-CT and detecting periodontal inflammation by histological staining and qPCR after the treatments. Progressive alveolar bone loss was observed from day 3 after the ligature-placement. Infiltration and accumulation of F4/80+ macrophage was also detected. In accordance with the histological results, there was upregulation of the expression levels of the inflammatory genes Il1β, Tnf-α, and Il6 in gingival tissues isolated from the ligation sites. Our results suggest that this novel method could resolve the difficulty of ligature-placement in mice and consequently contribute to further use of mouse models for studying the pathological mechanisms of periodontitis and developing potential periodontal tissue regeneration strategies. C+ files, which are made of nickel-titanium, are tough, elastic, and sufficiently thin to pass through the interproximal space between the teeth after pre-bending to form an appropriate angle, thus providing an access for ligature wire insertion. As a common tool in the dental clinic, it is familiar to researchers of oral biology, and can provide the feasibility for wide application of our method.
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Affiliation(s)
- Danfeng Li
- Department of Orthodontics, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Yi Feng
- Department of Orthodontics, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Hang Tang
- Department of Orthodontics, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Lijia Huang
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Zhongchun Tong
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Cheng Hu
- Department of Orthodontics, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Xiaodan Chen
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jiali Tan
- Department of Orthodontics, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
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146
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Yuh DY, Maekawa T, Li X, Kajikawa T, Bdeir K, Chavakis T, Hajishengallis G. The secreted protein DEL-1 activates a β3 integrin-FAK-ERK1/2-RUNX2 pathway and promotes osteogenic differentiation and bone regeneration. J Biol Chem 2020; 295:7261-7273. [PMID: 32280065 PMCID: PMC7247308 DOI: 10.1074/jbc.ra120.013024] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/08/2020] [Indexed: 12/25/2022] Open
Abstract
The integrin-binding secreted protein developmental endothelial locus-1 (DEL-1) is involved in the regulation of both the initiation and resolution of inflammation in different diseases, including periodontitis, an oral disorder characterized by inflammatory bone loss. Here, using a mouse model of bone regeneration and in vitro cell-based mechanistic studies, we investigated whether and how DEL-1 can promote alveolar bone regeneration during resolution of experimental periodontitis. Compared with WT mice, mice lacking DEL-1 or expressing a DEL-1 variant with an Asp-to-Glu substitution in the RGD motif ("RGE point mutant"), which does not interact with RGD-dependent integrins, exhibited defective bone regeneration. Local administration of DEL-1 or of its N-terminal segment containing the integrin-binding RGD motif, but not of the RGE point mutant, reversed the defective bone regeneration in the DEL-1-deficient mice. Moreover, DEL-1 (but not the RGE point mutant) promoted osteogenic differentiation of MC3T3-E1 osteoprogenitor cells or of primary calvarial osteoblastic cells in a β3 integrin-dependent manner. The ability of DEL-1 to promote in vitro osteogenesis, indicated by induction of osteogenic genes such as the master transcription factor Runt-related transcription factor-2 (Runx2) and by mineralized nodule formation, depended on its capacity to induce the phosphorylation of focal adhesion kinase (FAK) and of extracellular signal-regulated kinase 1/2 (ERK1/2). We conclude that DEL-1 can activate a β3 integrin-FAK-ERK1/2-RUNX2 pathway in osteoprogenitors and promote new bone formation in mice. These findings suggest that DEL-1 may be therapeutically exploited to restore bone lost due to periodontitis and perhaps other osteolytic conditions.
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Affiliation(s)
- Da-Yo Yuh
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Tomoki Maekawa
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104; Research Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Xiaofei Li
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Tetsuhiro Kajikawa
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Khalil Bdeir
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Triantafyllos Chavakis
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, 001069 Dresden, Germany
| | - George Hajishengallis
- Department of Basic and Translational Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104.
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147
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Kajikawa T, Wang B, Li X, Wang H, Chavakis T, Moutsopoulos NM, Hajishengallis G. Frontline Science: Activation of metabolic nuclear receptors restores periodontal tissue homeostasis in mice with leukocyte adhesion deficiency-1. J Leukoc Biol 2020; 108:1501-1514. [PMID: 32421906 DOI: 10.1002/jlb.5hi0420-648r] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/14/2020] [Accepted: 04/30/2020] [Indexed: 12/15/2022] Open
Abstract
β2 Integrins mediate neutrophil-endothelial adhesion and recruitment of neutrophils to sites of inflammation. The diminished expression of β2 integrins in patients with mutations in the ITGB2 (CD18) gene (leukocyte adhesion deficiency-Type 1; LAD1) results in few or no neutrophils in peripheral tissues. In the periodontium, neutrophil paucity is associated with up-regulation of IL-23 and IL-17, which drive inflammatory bone loss. Using a relevant mouse model, we investigated whether diminished efferocytosis (owing to neutrophil scarcity) is associated with LAD1 periodontitis pathogenesis and aimed to develop approaches to restore the missing efferocytosis signals. We first showed that CD18-/- mice phenocopied human LAD1 in terms of IL-23/IL-17-driven inflammatory bone loss. Ab-mediated blockade of c-Mer tyrosine kinase (Mer), a major efferocytic receptor, mimicked LAD1-associated up-regulation of gingival IL-23 and IL-17 mRNA expression in wild-type (WT) mice. Consistently, soluble Mer-Fc reversed the inhibitory effect of efferocytosis on IL-23 expression in LPS-activated Mϕs. Adoptive transfer of WT neutrophils to CD18-/- mice down-regulated IL-23 and IL-17 expression to normal levels, but not when CD18-/- mice were treated with blocking anti-Mer Ab. Synthetic agonist-induced activation of liver X receptors (LXR) and peroxisome proliferator-activated receptors (PPAR), which link efferocytosis to generation of homeostatic signals, inhibited the expression of IL-23 and IL-17 and favorably affected the bone levels of CD18-/- mice. Therefore, our data link diminished efferocytosis-associated signaling due to impaired neutrophil recruitment to dysregulation of the IL-23-IL-17 axis and, moreover, suggest LXR and PPAR as potential therapeutic targets for treating LAD1 periodontitis.
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Affiliation(s)
- Tetsuhiro Kajikawa
- School of Dental Medicine, Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Baomei Wang
- School of Dental Medicine, Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Xiaofei Li
- School of Dental Medicine, Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hui Wang
- School of Dental Medicine, Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Triantafyllos Chavakis
- Faculty of Medicine, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | | | - George Hajishengallis
- School of Dental Medicine, Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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148
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Chazaud B. Inflammation and Skeletal Muscle Regeneration: Leave It to the Macrophages! Trends Immunol 2020; 41:481-492. [PMID: 32362490 DOI: 10.1016/j.it.2020.04.006] [Citation(s) in RCA: 184] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/01/2020] [Accepted: 04/03/2020] [Indexed: 12/31/2022]
Abstract
Inflammation is usually considered as harmful; however, it is also necessary for tissue recovery after injury. Macrophages exert immune and nonimmune functions throughout this process. During skeletal muscle regeneration, they mount an inflammatory response while exerting trophic roles on muscle and mesenchymal stem cells. Proinflammatory macrophages shift to being anti-inflammatory, triggering the resolution of inflammation. Studies have highlighted that during this shift, a crosstalk ensues, integrating cues for resolution, efferocytosis, cellular metabolism, and signaling pathways. During the restorative phase, macrophages dampen inflammation while promoting stem cell differentiation, angiogenesis, and matrix remodeling. Since blunting the inflammatory phase can be detrimental for muscle regeneration, we suggest that rather than fighting inflammation, it should be allowed to operate and resolve, thus allowing for tissue recovery.
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Affiliation(s)
- Bénédicte Chazaud
- Institut NeuroMyoGène, Université Claude Bernard Lyon 1, CNRS UMR 5310, INSERM U1217, Université Lyon, Lyon, France.
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149
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Van Dyke TE, Sima C. Understanding resolution of inflammation in periodontal diseases: Is chronic inflammatory periodontitis a failure to resolve? Periodontol 2000 2020; 82:205-213. [PMID: 31850636 DOI: 10.1111/prd.12317] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Periodontitis is an infectious-inflammatory disease that results from loss of balance between the commensal microbiome and the host response. The hyper-inflammatory, uncontrolled inflammatory immune lesion promotes tissue damage and impedes effective bacterial clearance. In this review, the relationship between the microbiome and the inflammatory/immune response is explored in the context of a bi-directional pathogenesis; bacteria induce inflammation and inflammation modifies the growth environment causing shifts in the composition of the microbiome. Resolution of inflammation is an active, receptor-mediated process induced by specialized pro-resolving lipid mediators. Inflammatory disease may, therefore, be the result of failure of resolution. Failure to resolve inflammation coupled with resultant microbiome changes is hypothesized to drive development of periodontitis. Re-establishment of microbiome/host homeostasis by specialized pro-resolving lipid mediator therapy suggests that microbiome dysbiosis, the host hyperinflammatory phenotype, and periodontitis can be reversed.
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Affiliation(s)
- Thomas E Van Dyke
- Forsyth Institute, Cambridge, Massachusetts, USA.,Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Corneliu Sima
- Harvard School of Dental Medicine, Boston, Massachusetts, USA
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Kourtzelis I, Hajishengallis G, Chavakis T. Phagocytosis of Apoptotic Cells in Resolution of Inflammation. Front Immunol 2020; 11:553. [PMID: 32296442 PMCID: PMC7137555 DOI: 10.3389/fimmu.2020.00553] [Citation(s) in RCA: 160] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 03/11/2020] [Indexed: 01/04/2023] Open
Abstract
Efficient inflammation resolution is important not only for the termination of the inflammatory response but also for the restoration of tissue integrity. An integral process to resolution of inflammation is the phagocytosis of dying cells by macrophages, known as efferocytosis. This function is mediated by a complex and well-orchestrated network of interactions amongst specialized phagocytic receptors, bridging molecules, as well as “find-me” and “eat-me” signals. Efferocytosis serves not only as a waste disposal mechanism (clearance of the apoptotic cells) but also promotes a pro-resolving phenotype in efferocytic macrophages and thereby termination of inflammation. Alterations in cellular metabolism are critical for shaping the phenotype and function of efferocytic macrophages, thus, representing an important determinant of macrophage plasticity. Impaired efferocytosis can result in inflammation-associated pathologies or autoimmunity. The present mini review summarizes current knowledge regarding the mechanisms regulating macrophage efferocytosis during clearance of inflammation.
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Affiliation(s)
- Ioannis Kourtzelis
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.,Hull York Medical School, York Biomedical Research Institute, University of York, York, United Kingdom
| | - George Hajishengallis
- Laboratory of Innate Immunity and Inflammation, Penn Dental Medicine, Department of Basic and Translational Sciences, University of Pennsylvania, Philadelphia, PA, United States
| | - Triantafyllos Chavakis
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.,Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
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