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Tang F, Zhao XL, Xu LY, Zhang JN, Ao H, Peng C. Endothelial dysfunction: Pathophysiology and therapeutic targets for sepsis-induced multiple organ dysfunction syndrome. Biomed Pharmacother 2024; 178:117180. [PMID: 39068853 DOI: 10.1016/j.biopha.2024.117180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/13/2024] [Accepted: 07/22/2024] [Indexed: 07/30/2024] Open
Abstract
Sepsis and septic shock are critical medical conditions characterized by a systemic inflammatory response to infection, significantly contributing to global mortality rates. The progression to multiple organ dysfunction syndrome (MODS) represents the most severe complication of sepsis and markedly increases clinical mortality. Central to the pathophysiology of sepsis, endothelial cells play a crucial role in regulating microcirculation and maintaining barrier integrity across various organs and tissues. Recent studies have underscored the pivotal role of endothelial function in the development of sepsis-induced MODS. This review aims to provide a comprehensive overview of the pathophysiology of sepsis-induced MODS, with a specific focus on endothelial dysfunction. It also compiles compelling evidence regarding potential small molecules that could attenuate sepsis and subsequent multi-organ damage by modulating endothelial function. Thus, this review serves as an essential resource for clinical practitioners involved in the diagnosing, managing, and providing intensive care for sepsis and associated multi-organ injuries, emphasizing the importance of targeting endothelial cells to enhance outcomes of the patients.
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Affiliation(s)
- Fei Tang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Xiao-Lan Zhao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Li-Yue Xu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Jing-Nan Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Hui Ao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China; Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
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Ganguly S, Rosenthal SB, Ishizuka K, Troutman TD, Rohm TV, Khader N, Aleman-Muench G, Sano Y, Archilei S, Soroosh P, Olefsky JM, Feldstein AE, Kisseleva T, Loomba R, Glass CK, Brenner DA, Dhar D. Lipid-associated macrophages' promotion of fibrosis resolution during MASH regression requires TREM2. Proc Natl Acad Sci U S A 2024; 121:e2405746121. [PMID: 39172787 PMCID: PMC11363294 DOI: 10.1073/pnas.2405746121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 07/12/2024] [Indexed: 08/24/2024] Open
Abstract
While macrophage heterogeneity during metabolic dysfunction-associated steatohepatitis (MASH) has been described, the fate of these macrophages during MASH regression is poorly understood. Comparing macrophage heterogeneity during MASH progression vs regression, we identified specific macrophage subpopulations that are critical for MASH/fibrosis resolution. We elucidated the restorative pathways and gene signatures that define regression-associated macrophages and establish the importance of TREM2+ macrophages during MASH regression. Liver-resident Kupffer cells are lost during MASH and are replaced by four distinct monocyte-derived macrophage subpopulations. Trem2 is expressed in two macrophage subpopulations: i) monocyte-derived macrophages occupying the Kupffer cell niche (MoKC) and ii) lipid-associated macrophages (LAM). In regression livers, no new transcriptionally distinct macrophage subpopulation emerged. However, the relative macrophage composition changed during regression compared to MASH. While MoKC was the major macrophage subpopulation during MASH, they decreased during regression. LAM was the dominant macrophage subtype during MASH regression and maintained Trem2 expression. Both MoKC and LAM were enriched in disease-resolving pathways. Absence of TREM2 restricted the emergence of LAMs and formation of hepatic crown-like structures. TREM2+ macrophages are functionally important not only for restricting MASH-fibrosis progression but also for effective regression of inflammation and fibrosis. TREM2+ macrophages are superior collagen degraders. Lack of TREM2+ macrophages also prevented elimination of hepatic steatosis and inactivation of HSC during regression, indicating their significance in metabolic coordination with other cell types in the liver. TREM2 imparts this protective effect through multifactorial mechanisms, including improved phagocytosis, lipid handling, and collagen degradation.
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Affiliation(s)
- Souradipta Ganguly
- Department of Medicine,School of Medicine,University of California, San Diego, CA92093
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA92037
| | - Sara Brin Rosenthal
- Center for Computational Biology and Bioinformatics, Department of Medicine, University of California, San Diego, CA92093
| | - Kei Ishizuka
- Department of Medicine,School of Medicine,University of California, San Diego, CA92093
| | - Ty D. Troutman
- Department of Cellular and Molecular Medicine, University of California, San Diego, CA92093
- Division of Allergy and Immunology, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH45229
| | - Theresa V. Rohm
- Department of Medicine,School of Medicine,University of California, San Diego, CA92093
| | - Naser Khader
- Department of Medicine,School of Medicine,University of California, San Diego, CA92093
| | - German Aleman-Muench
- Cardiovascular and Metabolism discovery, Immunometabolism, Janssen Research & Development,La Jolla, CA92121
| | - Yasuyo Sano
- Cardiovascular and Metabolism discovery, Immunometabolism, Janssen Research & Development,La Jolla, CA92121
| | - Sebastiano Archilei
- Department of Medicine,School of Medicine,University of California, San Diego, CA92093
| | - Pejman Soroosh
- Cardiovascular and Metabolism discovery, Immunometabolism, Janssen Research & Development,La Jolla, CA92121
| | - Jerrold M. Olefsky
- Department of Medicine,School of Medicine,University of California, San Diego, CA92093
| | - Ariel E. Feldstein
- Department of Pediatrics, School of Medicine, University of California, San Diego, CA92093
| | - Tatiana Kisseleva
- Department of Surgery, School of Medicine, University of California, San Diego, CA92093
| | - Rohit Loomba
- Department of Medicine,School of Medicine,University of California, San Diego, CA92093
| | - Christopher K. Glass
- Department of Cellular and Molecular Medicine, University of California, San Diego, CA92093
| | - David A. Brenner
- Department of Medicine,School of Medicine,University of California, San Diego, CA92093
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA92037
| | - Debanjan Dhar
- Department of Medicine,School of Medicine,University of California, San Diego, CA92093
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA92037
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3
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Fan Y, Xu Y, Huo Z, Zhang H, Peng L, Jiang X, Thomson AW, Dai H. Role of triggering receptor expressed on myeloid cells-1 in kidney diseases: A biomarker and potential therapeutic target. Chin Med J (Engl) 2024; 137:1663-1673. [PMID: 38809056 PMCID: PMC11268828 DOI: 10.1097/cm9.0000000000003197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Indexed: 05/30/2024] Open
Abstract
ABSTRACT Triggering receptor expressed on myeloid cells-1 (TREM-1) is a member of the immunoglobulin superfamily. As an amplifier of the inflammatory response, TREM-1 is mainly involved in the production of inflammatory mediators and the regulation of cell survival. TREM-1 has been studied in infectious diseases and more recently in non-infectious disorders. More and more studies have shown that TREM-1 plays an important pathogenic role in kidney diseases. There is evidence that TREM-1 can not only be used as a biomarker for diagnosis of disease but also as a potential therapeutic target to guide the development of novel therapeutic agents for kidney disease. This review summarized molecular biology of TREM-1 and its signaling pathways as well as immune response in the progress of acute kidney injury, renal fibrosis, diabetic nephropathy, immune nephropathy, and renal cell carcinoma.
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Affiliation(s)
- Yuxi Fan
- Department of Immunology, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, China
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Ye Xu
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
- Medical College of Guangxi University, Nanning, Guangxi 530004, China
| | - Zhi Huo
- Department of Immunology, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, China
| | - Hedong Zhang
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Longkai Peng
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Xin Jiang
- Department of Organ Transplantation, The Fifth Clinical Medical College of Henan University of Chinese Medicine (Zhengzhou People’s Hospital), Zhengzhou, Henan 450000, China
| | - Angus W. Thomson
- Department of Surgery, Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Helong Dai
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
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Bharadwaj S, Groza Y, Mierzwicka JM, Malý P. Current understanding on TREM-2 molecular biology and physiopathological functions. Int Immunopharmacol 2024; 134:112042. [PMID: 38703564 DOI: 10.1016/j.intimp.2024.112042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/05/2024] [Accepted: 04/05/2024] [Indexed: 05/06/2024]
Abstract
Triggering receptor expressed on myeloid cells 2 (TREM-2), a glycosylated receptor belonging to the immunoglobin superfamily and especially expressed in the myeloid cell lineage, is frequently explained as a reminiscent receptor for both adaptive and innate immunity regulation. TREM-2 is also acknowledged to influence NK cell differentiation via the PI3K and PLCγ signaling pathways, as well as the partial activation or direct inhibition of T cells. Additionally, TREM-2 overexpression is substantially linked to cell-specific functions, such as enhanced phagocytosis, reduced toll-like receptor (TLR)-mediated inflammatory cytokine production, increased transcription of anti-inflammatory cytokines, and reshaped T cell function. Whereas TREM-2-deficient cells exhibit diminished phagocytic function and enhanced proinflammatory cytokines production, proceeding to inflammatory injuries and an immunosuppressive environment for disease progression. Despite the growing literature supporting TREM-2+ cells in various diseases, such as neurodegenerative disorders and cancer, substantial facets of TREM-2-mediated signaling remain inadequately understood relevant to pathophysiology conditions. In this direction, herein, we have summarized the current knowledge on TREM-2 biology and cell-specific TREM-2 expression, particularly in the modulation of pivotal TREM-2-dependent functions under physiopathological conditions. Furthermore, molecular regulation and generic biological relevance of TREM-2 are also discussed, which might provide an alternative approach for preventing or reducing TREM-2-associated deformities. At last, we discussed the TREM-2 function in supporting an immunosuppressive cancer environment and as a potential drug target for cancer immunotherapy. Hence, summarized knowledge of TREM-2 might provide a window to overcome challenges in clinically effective therapies for TREM-2-induced diseases in humans.
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Affiliation(s)
- Shiv Bharadwaj
- Laboratory of Ligand Engineering, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV Research Center, Průmyslová 595, 252 50 Vestec, Czech Republic.
| | - Yaroslava Groza
- Laboratory of Ligand Engineering, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV Research Center, Průmyslová 595, 252 50 Vestec, Czech Republic
| | - Joanna M Mierzwicka
- Laboratory of Ligand Engineering, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV Research Center, Průmyslová 595, 252 50 Vestec, Czech Republic
| | - Petr Malý
- Laboratory of Ligand Engineering, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV Research Center, Průmyslová 595, 252 50 Vestec, Czech Republic.
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5
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Matos ADO, Dantas PHDS, Queiroz HAGDB, Silva-Sales M, Sales-Campos H. TREM-2: friend or foe in infectious diseases? Crit Rev Microbiol 2024; 50:1-19. [PMID: 36403150 DOI: 10.1080/1040841x.2022.2146481] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 11/07/2022] [Indexed: 11/21/2022]
Abstract
The triggering receptor expressed on myeloid cells-2 (TREM-2) is an immune receptor expressed on immune and non-immune cells, more frequently investigated in neurodegenerative disorders and considered a marker for microglia activation. In infectious diseases, the receptor was initially believed to be an anti-inflammatory molecule, opposing the inflammation triggered by TREM-1. Currently, TREM-2 is associated with different aspects in response to infectious stimuli, including the induction of bacterial phagocytosis and clearance, containment of exacerbated pro-inflammatory responses, induction of M2 differentiation and activation of Th1 lymphocytes, besides of neurological damage after viral infection. Here, we present and discuss results published in the last two decades regarding the expression, activation and functions of TREM-2 during the course of bacterial, viral, fungal and parasitic infections. A surprisingly plasticity was observed regarding the roles of the receptor in the aforementioned contexts, which largely varied according to the cell/organ and pathogen type, besides influencing disease outcome. Therefore, our review aimed to critically overview the role of TREM-2 in infectious diseases, highlighting its potential to be used as a clinical biomarker or therapeutic target.
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Affiliation(s)
| | | | | | - Marcelle Silva-Sales
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Brazil
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6
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Yang Z, Pan X, Wu X, Lin Q, Chen Y, Cai S, Zhang Y, Mai Z, Ahmad N, Ma D, Deng L. TREM-1 induces pyroptosis in cardiomyocytes by activating NLRP3 inflammasome through the SMC4/NEMO pathway. FEBS J 2023; 290:1549-1562. [PMID: 36181338 DOI: 10.1111/febs.16644] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 08/14/2022] [Accepted: 09/30/2022] [Indexed: 01/01/2023]
Abstract
Sepsis often causes cell death via pyroptosis and hence results in septic cardiomyopathy. Triggering receptors expressed in myeloid cells-1 (TREM-1) may initiate cellular cascade pathways and, in turn, induce cell death and vital organ dysfunction in sepsis, but the evidence is limited. We set to investigate the role of TREM-1 on nucleotide-binding oligomerization domain-like receptors with pyrin domain-3 (NLRP3) inflammasome activation and cardiomyocyte pyroptosis in sepsis models using cardiac cell line (HL-1) and mice. In this study, TREM-1 was found to be significantly increased in HL-1 cells challenged with lipopolysaccharide (LPS). Pyroptosis was also significantly increased in the HL-1 cells challenged with lipopolysaccharide and an NLRP3 inflammasome activator, nigericin. The close interaction between TREM-1 and structural maintenance of chromosome 4 (SMC4) was also identified. Furthermore, inhibition of TREM-1 or SMC4 prevented the upregulation of NLRP3 and decreased Gasdermin-D, IL-1β and caspase-1 cleavage. In mice subjected to caecal ligation and puncture, the TREM-1 inhibitor LR12 decreased the expression of NLRP3 and attenuated cardiomyocyte pyroptosis, leading to improved cardiac function and prolonged survival of septic mice. Our work demonstrates that, under septic conditions, TREM-1 plays a critical role in cardiomyocyte pyroptosis. Targeting TREM-1 and its associated molecules may therefore lead to novel therapeutic treatments for septic cardiomyopathy.
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Affiliation(s)
- Zilong Yang
- Department of Intensive Care Medicine, Affiliated Hospital of Guangdong Medical University, China
| | - Xiaoyan Pan
- Department of Intensive Care Medicine, Affiliated Hospital of Guangdong Medical University, China
| | - Xiaoxia Wu
- Department of Intensive Care Medicine, Affiliated Hospital of Guangdong Medical University, China
| | - Qiuyun Lin
- Department of Intensive Care Medicine, Affiliated Hospital of Guangdong Medical University, China
| | - Yongxia Chen
- Department of Intensive Care Medicine, Affiliated Hospital of Guangdong Medical University, China
| | - Shuting Cai
- Department of Intensive Care Medicine, Affiliated Hospital of Guangdong Medical University, China
| | - Yuanli Zhang
- Department of Intensive Care Medicine, Affiliated Hospital of Guangdong Medical University, China
| | - Zhenhua Mai
- Department of Intensive Care Medicine, Affiliated Hospital of Guangdong Medical University, China
| | - Niall Ahmad
- Division of Anaesthetics, Pain Medicine & Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - Daqing Ma
- Division of Anaesthetics, Pain Medicine & Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - Liehua Deng
- Department of Intensive Care Medicine, Affiliated Hospital of Guangdong Medical University, China
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7
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Zhang C, Kan X, Zhang B, Ni H, Shao J. The role of triggering receptor expressed on myeloid cells-1 (TREM-1) in central nervous system diseases. Mol Brain 2022; 15:84. [PMID: 36273145 PMCID: PMC9588203 DOI: 10.1186/s13041-022-00969-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 10/07/2022] [Indexed: 12/29/2022] Open
Abstract
Triggering receptor expressed on myeloid cells-1 (TREM-1) is a member of the immunoglobulin superfamily and is mainly expressed on the surface of myeloid cells such as monocytes, macrophages, and neutrophils. It plays an important role in the triggering and amplification of inflammatory responses, and it is involved in the development of various infectious and non-infectious diseases, autoimmune diseases, and cancers. In recent years, TREM-1 has also been found to participate in the pathological processes of several central nervous system (CNS) diseases. Targeting TREM-1 may be a promising strategy for treating these diseases. This paper aims to characterize TREM-1 in terms of its structure, signaling pathway, expression, regulation, ligands and pathophysiological role in CNS diseases.
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Affiliation(s)
- Chunyan Zhang
- Department of Neurology, The Third People’s Hospital of Zhangjiagang City, Suzhou, 215600 Jiangsu China
| | - Xugang Kan
- grid.417303.20000 0000 9927 0537Department of Neurobiology and Anatomy, XuzhouKeyLaboratoryofNeurobiology, Xuzhou Medical University, Xuzhou, 221004 Jiangsu China
| | - Baole Zhang
- grid.417303.20000 0000 9927 0537Department of Neurobiology and Anatomy, XuzhouKeyLaboratoryofNeurobiology, Xuzhou Medical University, Xuzhou, 221004 Jiangsu China
| | - Haibo Ni
- Department of Neurosurgery, The First People’s Hospital of Zhangjiagang City, Suzhou, 215600 Jiangsu China
| | - Jianfeng Shao
- Department of Neurology, The Third People’s Hospital of Zhangjiagang City, Suzhou, 215600 Jiangsu China
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8
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Chang C, Gao Q, Deng G, Luo K, Zhu H. Diagnostic and prognostic predictive values of triggering receptor expressed on myeloid cell-1 expression in neonatal sepsis: A meta-analysis and systematic review. Front Pediatr 2022; 10:929665. [PMID: 35935355 PMCID: PMC9354627 DOI: 10.3389/fped.2022.929665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 06/28/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The purpose of this systematic review was to explore the value of the expression level of the triggering receptor expressed on myeloid cell-1 (TREM-1) in the diagnosis and prognosis of neonatal sepsis. METHODS A comprehensive search was performed to identify the diagnostic and prognostic predictive values of the TREM-1 expression level in neonatal sepsis. Based on the retrieval strategy, Cochrane Library, Embase, Ovid, ProQuest, PubMed, Scopus, and Web of Science databases were searched from inception to February 2022. Studies were included if they assessed the accuracy of TREM-1 expression in the diagnosis of neonatal sepsis and distinguished survival and death in neonatal sepsis. Two authors independently evaluated the study and extracted the data, including the first author of the literature, country, total study population, basic population characteristics of the study group and the control group, study design (observational studies), type of sample, sepsis onset, type of biomarker, assay method, cut-off, sensitivity, specificity, true positives (TP), false positives (FP), false negatives (FN), and true negatives (TN). A third party will be consulted if disputed. The accuracy of TREM-1 expression in the diagnosis and prognostic prediction of neonatal sepsis was evaluated by a bivariate mixed-effects model. The source of heterogeneity was explored through meta-regression analysis. RESULTS Thirteen articles that met the research criteria were included in qualitative analysis, and 11 of them were included in quantitative analysis. The pooled sensitivity, specificity, positive likelihood ratio (PLR), negative likelihood ratio (NLR), diagnostic odds ratio (DOR), and the area under the summary receiver operator characteristic (SROC) curve of soluble TREM-1 (sTREM-1) were 0.94 (95% CI: 0.82, 0.98), 0.87 (95% CI: 0.70, 0.95), 7.36 (95% CI: 2.75, 19.74), 0.07 (95% CI: 0.02, 0.24), 111.71 (95% CI: 13.24, 942.92), and 0.96 (95% CI: 0.94, 0.98), respectively. Meta-regression and subgroup analysis were used to investigate the heterogeneity, owing to non-threshold effects caused by types of test sample and research design. sTREM-1 as a biomarker for distinguishing survival and death in neonates with sepsis had pooled sensitivity, specificity, area under the SROC curve, PLR, NLR, and DOR of 0.95 (95% CI: 0.83, 0.99), 0.98 (95% CI: 0.68, 1.00), 0.99 (95% CI: 0.97, 0.99), 39.28 (95% CI: 2.13, 723.99), 0.05 (95% CI: 0.01, 0.19), and 789.61 (95% CI: 17.53, 35,560.72), respectively. CONCLUSION The study showed that TREM-1 was a potential biomarker for the diagnosis and prognosis of neonatal sepsis. The biggest advantage of this study is that it is the first to comprehensively explore the role of TREM-1 expression in the diagnosis and prognosis of neonatal sepsis. However, there are some limitations in this study, such as the reduced number of clinical studies on TREM-1 expression as a biomarker of neonatal sepsis, regional bias, and differences in detection methods. Hence, more large-scale and high-quality studies are needed to improve diagnostic accuracy. SYSTEMATIC REVIEW REGISTRATION https://www.crd.york.ac.uk/PROSPERO/, identifier: CRD42022338041.
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Affiliation(s)
- Chenyang Chang
- The First Clinical Medical College of Gannan Medical University, Ganzhou, China
| | - Qiannan Gao
- Pediatric Internal Medicine, Children's Medical Center, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Guoping Deng
- Neonatal/Pediatric Intensive Care Unit, Children's Medical Center, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Kaiyuan Luo
- The First Clinical Medical College of Gannan Medical University, Ganzhou, China.,Pediatric Internal Medicine, Children's Medical Center, First Affiliated Hospital of Gannan Medical University, Ganzhou, China.,Neonatal/Pediatric Intensive Care Unit, Children's Medical Center, First Affiliated Hospital of Gannan Medical University, Ganzhou, China.,Institute of Children's Medical, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Huifang Zhu
- Neonatal/Pediatric Intensive Care Unit, Children's Medical Center, First Affiliated Hospital of Gannan Medical University, Ganzhou, China.,Institute of Children's Medical, First Affiliated Hospital of Gannan Medical University, Ganzhou, China.,Ganzhou Key Laboratory of Immunotherapeutic Drugs Developing for Childhood Leukemia, Ganzhou, China.,Basic Medical College of Gannan Medical University, Ganzhou, China.,Department of Pathogenic Biology, School of Basic Medical Sciences, Gannan Medical University, Ganzhou, China
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9
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sTREM-1 Predicts Disease Severity and Mortality in COVID-19 Patients: Involvement of Peripheral Blood Leukocytes and MMP-8 Activity. Viruses 2021; 13:v13122521. [PMID: 34960790 PMCID: PMC8708887 DOI: 10.3390/v13122521] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/01/2021] [Accepted: 12/10/2021] [Indexed: 01/08/2023] Open
Abstract
Uncontrolled inflammatory responses play a critical role in coronavirus disease (COVID-19). In this context, because the triggering-receptor expressed on myeloid cells-1 (TREM-1) is considered an intrinsic amplifier of inflammatory signals, this study investigated the role of soluble TREM-1 (sTREM-1) as a biomarker of the severity and mortality of COVID-19. Based on their clinical scores, we enrolled COVID-19 positive patients (n = 237) classified into mild, moderate, severe, and critical groups. Clinical data and patient characteristics were obtained from medical records, and their plasma inflammatory mediator profiles were evaluated with immunoassays. Plasma levels of sTREM-1 were significantly higher among patients with severe disease compared to all other groups. Additionally, levels of sTREM-1 showed a significant positive correlation with other inflammatory parameters, such as IL-6, IL-10, IL-8, and neutrophil counts, and a significant negative correlation was observed with lymphocyte counts. Most interestingly, sTREM-1 was found to be a strong predictive biomarker of the severity of COVID-19 and was related to the worst outcome and death. Systemic levels of sTREM-1 were significantly correlated with the expression of matrix metalloproteinases (MMP)-8, which can release TREM-1 from the surface of peripheral blood cells. Our findings indicated that quantification of sTREM-1 could be used as a predictive tool for disease outcome, thus improving the timing of clinical and pharmacological interventions in patients with COVID-19.
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10
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Wu D, Weng Y, Feng Y, Liang B, Wang H, Li L, Wang Z. Trem1 Induces Periodontal Inflammation via Regulating M1 Polarization. J Dent Res 2021; 101:437-447. [PMID: 34719965 DOI: 10.1177/00220345211044681] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Periodontitis is a chronic inflammatory condition characterized by destruction of nonmineralized and mineralized connective tissues. This study evaluated the role of Trem1 (triggering receptors expressed on myeloid cells 1) in periodontitis by influencing polarization of M1 macrophages through the STAT3/HIF-1α signaling pathway. Trem1 was significantly upregulated in the gingival tissues of patients with periodontitis, as identified by high-throughput RNA sequencing, and positively correlated with levels of M1 macrophage-associated genes. The results of flow cytometry, Western blotting, and reverse transcription quantitative polymerase chain reaction showed that knockdown of Trem1 in RAW 264.7 cells decreased polarization of M1 macrophages and increased polarization of M2 macrophages, while overexpression of Trem1 exerted an opposite effect. Furthermore, a mouse model of Trem1 knockout periodontitis exhibited limited infiltration of macrophages and decreased expression levels of M1 macrophage-associated genes in periodontitis lesions and bone marrow-derived macrophages. Importantly, we found that Trem1 could regulate polarization of M1 macrophages through STAT3/HIF-1α signaling as evidenced by RNA sequencing. Moreover, inhibition of Trem1 and HIF-1α could suppress the expression level of proinflammatory cytokine (interleukin 1β) and upregulate the expression level of anti-inflammatory cytokine (interleukin 10) in periodontitis. Collectively, we identified that the Trem1/STAT3/HIF-1α axis could regulate polarization of M1 macrophages and is a potential candidate in the treatment of periodontitis.
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Affiliation(s)
- D Wu
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai, China.,Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Y Weng
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai, China.,Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Y Feng
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai, China.,Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - B Liang
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai, China.,Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - H Wang
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai, China.,Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - L Li
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai, China.,Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Z Wang
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai, China.,Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
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11
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Kerget F, Kerget B, İba Yılmaz S, Kızıltunç A. Evaluation of the relationship between TREM-1/TREM-2 ratio and clinical course in COVID-19 pneumonia. Int J Clin Pract 2021; 75:e14697. [PMID: 34365706 PMCID: PMC8420347 DOI: 10.1111/ijcp.14697] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/02/2021] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVE The inflammatory/anti-inflammatory balance has an important role in the clinical course of SARS-CoV-2 infection (COVID-19), which has affected over 100 million people since it first appeared in China in December 2019. The aim of this study was to investigate the relationship between triggering receptor expressed on myeloid cells (TREM)-1/TREM-2 ratio and COVID-19 severity. METHODS A total of 171 individuals were included in the study: 121 patients who were admitted to the chest diseases department and intensive care unit of our hospital and diagnosed with COVID-19 by real-time PCR of nasopharyngeal swab samples from December 2020 to March 2021 and a control group consisting of 50 asymptomatic health workers in our hospital who had negative real-time PCR results during routine COVID-19 screening. RESULTS TREM-1 level was significantly higher in patients with severe disease compared with the moderate and control groups (P = .003, P = .001). TREM-2 levels did not differ significantly in moderate and severe patients (P = .36) but were significantly higher in both patient groups compared with the control group (P = .001 for both). TREM-1/TREM-2 ratio was significantly higher in the severe patient group than in the moderate and control groups (P = .001 for both). In receiver operating characteristic curve analysis of TREM-1/TREM-2 ratio in patients with moderate and severe COVID-19, the area under the curve was 0.723. Using a cut-off value of 0.125 for TREM-1/TREM-2 ratio in the Youden index calculation, the sensitivity was 60% and specificity was 71%. CONCLUSION Experience with the positive effects of medical treatments to restore inflammatory balance in the course of COVID-19 is steadily increasing. TREM-1 and TREM-2 have an important role in inflammation and may serve as biomarkers and therapeutic targets in the early treatment and follow-up of COVID-19.
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Affiliation(s)
- Ferhan Kerget
- Depertmant of Infection Diseases and Clinical MicrobiologyHealth Sciences University Erzurum Regional Education and Research HospitalErzurumTurkey
| | - Buğra Kerget
- Depertment of Pulmonary DiseasesAtaturk University School of MedicineErzurumTurkey
| | - Sibel İba Yılmaz
- Depertmant of Infection Diseases and Clinical MicrobiologyHealth Sciences University Erzurum Regional Education and Research HospitalErzurumTurkey
| | - Ahmet Kızıltunç
- Depertment of BiochemistryAtaturk University School of MedicineErzurumTurkey
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12
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Reduced uterine tissue damage during Chlamydia muridarum infection in TREM-1,3 deficient mice. Infect Immun 2021; 89:e0007221. [PMID: 34125599 DOI: 10.1128/iai.00072-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Genital infections with Chlamydia trachomatis can lead to uterine and oviduct tissue damage in the female reproductive tract. Neutrophils are strongly associated with tissue damage during chlamydial infection, while an adaptive CD4 T cell response is necessary to combat infection. Activation of triggering receptor expressed on myeloid cells-1 (TREM-1) on neutrophils has previously been shown to induce and/or enhance degranulation synergistically with TLR-signaling. Additionally, TREM-1 can promote neutrophil transepithelial migration. In this study, we sought to determine the contribution of TREM-1,3 in immunopathology in the female mouse genital tract during Chlamydia muridarum infection. Relative to control mice, trem1,3-/- mice had no difference in chlamydial burden or duration of lower genital tract infection. We also observed a similar incidence of oviduct hydrosalpinx 45 days post-infection in trem1,3-/- compared to WT mice. However, compared to WT, trem1,3-/- mice developed significantly fewer uterine horn hydrometra. Early in infection, trem1,3-/- mice displayed a notable decrease in the number of uterine glands containing polymorphonuclear cells and uterine horn lumens had fewer neutrophils, with increased G-CSF. Trem1,3-/- mice also had reduced erosion of the luminal epithelium. These data indicate TREM-1,3 contributes to transepithelial neutrophil migration in the uterus and uterine glands, promoting the development of uterine hydrometra in infected mice.
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13
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Shafi S, Singh A, Ibrahim AM, Alhajri N, Abu Izneid T, Pottoo FH. Role of triggering receptor expressed on myeloid cells 2 (TREM2) in neurodegenerative dementias. Eur J Neurosci 2021; 53:3294-3310. [PMID: 33786894 DOI: 10.1111/ejn.15215] [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: 06/15/2020] [Accepted: 03/22/2021] [Indexed: 01/04/2023]
Abstract
Neurodegeneration is a debilitating condition that causes nerve cell degeneration or death. Neurodegenerative diseases (NDDs) such as Alzheimer's disease (AD), Parkinson's disease (PD), frontotemporal dementia (FTD), and Lewy body dementia (LBD) are posing a larger population burden of dementia worldwide. Neurodegenerative dementia is one of the main challenges in public health with its main characteristics being permanent loss of memory, impairment in cognition, and impaired daily functions. The published literature about genetic studies of these disorders suggests genetic underpinning in the pathogenesis of neurodegenerative dementia. In the process of underlining the pathogenesis of NDD, growing evidence has related genetic variations in the triggering receptor expressed on myeloid cells 2 (TREM2). This review paper aims to provide a detailed information regarding the association of TREM2 and NDDs leading to dementia. A central consideration is AD that accounts for almost 50%-70% of all late-life dementias alone or in combination with other neurological disorders. Other prevalent neurodegenerative conditions that lead to dementia are also discussed. Such studies are important as they can give a comprehensive knowledge of TREM2's role in various NDDs, in order to maximize the potential for developing new therapeutic approaches.
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Affiliation(s)
- Sadat Shafi
- Pharmaceutical Medicine, Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Archu Singh
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Abdallah Mohammad Ibrahim
- Fundamentals of Nursing Department, College of Nursing, Imam Abdul Rahman Bin Faisal University, Dammam, Saudi Arabia
| | - Noora Alhajri
- Department of Epidemiology and Population Health, College of Medicine and Health Science, Khalifa University, Abu Dhabi, UAE
| | | | - Faheem Hyder Pottoo
- Department of Pharmacology, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Damman, Saudi Arabia
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14
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Sun XG, Zhang MM, Liu SY, Chu XH, Xue GQ, Zhang BC, Zhu JB, Godje Godje IS, Zhu LJ, Hu HY, Hai-Wang, Shen YJ, Wang GQ. Role of TREM-1 in the development of early brain injury after subarachnoid hemorrhage. Exp Neurol 2021; 341:113692. [PMID: 33727099 DOI: 10.1016/j.expneurol.2021.113692] [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: 01/01/2021] [Revised: 02/23/2021] [Accepted: 03/11/2021] [Indexed: 12/12/2022]
Abstract
Triggering receptor expressed on myeloid cells-1 (TREM-1) was found to be induced in the context of subarachnoid hemorrhage (SAH) before. This study further investigates its role in the development of SAH-induced early brain injury (EBI). Firstly, rats were randomly divided into Sham and SAH groups for analysis of temporal patterns and cellular localization of TREM-1. Secondly, TREM-1 intervention was administrated to produce Sham, vehicle, antagonist and agonist groups, for analyzing TREM-1, Toll-like receptor 4 (TLR4), myeloid differentiation factor 88 (MyD88) and NF-κB expressions at 24 h post-modeling, and EBI assessment at 24 h and 72 h. Thirdly, TLR4 inhibitor (TAK-242) was exploited to produce Sham, Sham+TAK-242, SAH, and SAH + TAK-242 groups to analyze the effects of TLR4 inhibition on TREM-1 induction and EBI evaluation at 72 h. Fourthly, the relationship of soluble TREM-1 (sTREM-1) levels in cerebrospinal fluid of SAH patients with Hunt-Hess grades were explored. The results showed that TREM-1 increased in the brain after experimental SAH (eSAH) early at 6 h and peaked at 48 h, which was found to be located in microglia and endothelial cells. TREM-1 inhibition attenuated EBI associated with TLR4/MyD88/NF-κB suppression, while enhancement had the opposite effects. Contrarily, TLR4 inhibition prevented TREM-1 induction and ameliorated EBI. In addition, sTREM-1 levels in SAH patients positively correlated with Hunt-Hess grades. Overall, the present study provides new evidence that TREM-1 increases dynamically in the brain after eSAH and it is located in microglia and endothelial cells, which may aggravate EBI by interacting with TLR4 pathway. And sTREM-1 in patients might act as a monitoring biomarker of EBI, providing new insights for future studies.
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Affiliation(s)
- Xin-Gang Sun
- Department of Neurology, the Second Hospital Affiliated to Shanxi Medical University, Taiyuan, Shanxi 030000, People's Republic of China.
| | - Mi-Mi Zhang
- Shanxi Medical University, Taiyuan, Shanxi 030000, People's Republic of China
| | - Shao-Yu Liu
- Shanxi Medical University, Taiyuan, Shanxi 030000, People's Republic of China
| | - Xue-Hong Chu
- Shanxi Medical University, Taiyuan, Shanxi 030000, People's Republic of China
| | - Guo-Qiang Xue
- Department of Neurosurgery, Yuncheng Hospital Affiliated to Shanxi Medical University, Yuncheng, Shanxi 044000, People's Republic of China
| | - Bao-Chen Zhang
- Department of Neurosurgery, Yuncheng Hospital Affiliated to Shanxi Medical University, Yuncheng, Shanxi 044000, People's Republic of China
| | - Jia-Bao Zhu
- Department of Neurosurgery, Yuncheng Hospital Affiliated to Shanxi Medical University, Yuncheng, Shanxi 044000, People's Republic of China
| | | | - Li-Juan Zhu
- Shanxi Medical University, Taiyuan, Shanxi 030000, People's Republic of China
| | - Hui-Yu Hu
- Shanxi Medical University, Taiyuan, Shanxi 030000, People's Republic of China
| | - Hai-Wang
- Shanxi Medical University, Taiyuan, Shanxi 030000, People's Republic of China
| | - Ying-Jie Shen
- Shanxi Medical University, Taiyuan, Shanxi 030000, People's Republic of China
| | - Gai-Qing Wang
- Department of Neurology, the Second Hospital Affiliated to Shanxi Medical University, Taiyuan, Shanxi 030000, People's Republic of China
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15
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Singh H, Rai V, Nooti SK, Agrawal DK. Novel ligands and modulators of triggering receptor expressed on myeloid cells receptor family: 2015-2020 updates. Expert Opin Ther Pat 2021; 31:549-561. [PMID: 33507843 DOI: 10.1080/13543776.2021.1883587] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Introduction: Triggering receptors expressed on myeloid cells (TREMs) are inflammatory amplifiers with defined pathophysiological role in various infectious diseases, acute and chronic aseptic inflammations, and a variety of cancers, depicting TREMs as prominent therapeutic targets.Areas covered: Herein, updates from 2015 to 2020 are discussed to divulge the TREM ligands, as well as their peptide blockers, claimed to modulate their expression. The article also presents different strategies employed during the last five years to block interactions between TREMs and their ligands to treat various disease conditions by modulating their expression and activity.Expert opinion: There has been significant progress in the discovery of novel ligands and modulators of TREMs in the last five years that mainly revolved around the function of TREM molecules. A few peptides showed encouraging results to modulate the expression and activity of TREMs in preclinical studies, and these peptides are currently under clinical investigation. Based on the findings so far in several careful studies, we expect novel therapeutics in the near future which could have the ability to treat various disease conditions associated with TREM expression.
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Affiliation(s)
- Harbinder Singh
- Department of Translational Research, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences , Pomona, California, USA
| | - Vikrant Rai
- Department of Translational Research, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences , Pomona, California, USA
| | - Sunil K Nooti
- Department of Translational Research, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences , Pomona, California, USA
| | - Devendra K Agrawal
- Department of Translational Research, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences , Pomona, California, USA
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16
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Matos ADO, Dantas PHDS, Silva-Sales M, Sales-Campos H. TREM-1 isoforms in bacterial infections: to immune modulation and beyond. Crit Rev Microbiol 2021; 47:290-306. [PMID: 33522328 DOI: 10.1080/1040841x.2021.1878106] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The triggering receptor expressed on myeloid cells 1 (TREM-1) is an innate immunity receptor associated with the amplification of inflammation in sterile and non-sterile inflammatory disorders. Since its first description, the two isoforms of the receptor, membrane and soluble (mTREM-1 and sTREM-1, respectively) have been largely explored in the immunopathogenesis of several bacterial diseases and sepsis. The role of the receptor in these scenarios seems to be at least partly dependent on the source/type of bacteria, host and context. As uncontrolled inflammation is a result of several bacterial infections, the inhibition of the receptor has been considered as a promising approach to treat such conditions. Further, sTREM-1 has been explored as a biomarker for diagnosis and/or prognosis of several bacterial diseases. Therefore, this review aims to provide an updated insight into how the receptor influences and is influenced by bacterial infections, highlighting the advances regarding the use/manipulation of TREM-1 isoforms in biomedical research and clinical practice.
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Affiliation(s)
| | | | - Marcelle Silva-Sales
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil
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17
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Sun H, Feng J, Tang L. Function of TREM1 and TREM2 in Liver-Related Diseases. Cells 2020; 9:2626. [PMID: 33297569 PMCID: PMC7762355 DOI: 10.3390/cells9122626] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/01/2020] [Accepted: 12/03/2020] [Indexed: 02/07/2023] Open
Abstract
TREM1 and TREM2 are members of the triggering receptors expressed on myeloid cells (TREM) family. Both TREM1 and TREM2 are immunoglobulin superfamily receptors. Their main function is to identify foreign antigens and toxic substances, thereby adjusting the inflammatory response. In the liver, TREM1 and TREM2 are expressed on non-parenchymal cells, such as liver sinusoidal endothelial cells, Kupffer cells, and hepatic stellate cells, and cells which infiltrate the liver in response to injury including monocyte-derived macrophages and neutrophils. The function of TREM1 and TREM2 in inflammatory response depends on Toll-like receptor 4. TREM1 mainly augments inflammation during acute inflammation, while TREM2 mainly inhibits chronic inflammation to protect the liver from pathological changes. Chronic inflammation often induces metabolic abnormalities, fibrosis, and tumorigenesis. The above physiological changes lead to liver-related diseases, such as liver injury, nonalcoholic steatohepatitis, hepatic fibrosis, and hepatocellular carcinoma. Here, we review the function of TREM1 and TREM2 in different liver diseases based on inflammation, providing a more comprehensive perspective for the treatment of liver-related diseases.
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Affiliation(s)
- Huifang Sun
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China;
| | - Jianguo Feng
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Liling Tang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China;
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18
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Cioni B, Zaalberg A, van Beijnum JR, Melis MHM, van Burgsteden J, Muraro MJ, Hooijberg E, Peters D, Hofland I, Lubeck Y, de Jong J, Sanders J, Vivié J, van der Poel HG, de Boer JP, Griffioen AW, Zwart W, Bergman AM. Androgen receptor signalling in macrophages promotes TREM-1-mediated prostate cancer cell line migration and invasion. Nat Commun 2020; 11:4498. [PMID: 32908142 PMCID: PMC7481219 DOI: 10.1038/s41467-020-18313-y] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 06/29/2020] [Indexed: 12/14/2022] Open
Abstract
The androgen receptor (AR) is the master regulator of prostate cancer (PCa) development, and inhibition of AR signalling is the most effective PCa treatment. AR is expressed in PCa cells and also in the PCa-associated stroma, including infiltrating macrophages. Macrophages have a decisive function in PCa initiation and progression, but the role of AR in macrophages remains largely unexplored. Here, we show that AR signalling in the macrophage-like THP-1 cell line supports PCa cell line migration and invasion in culture via increased Triggering Receptor Expressed on Myeloid cells-1 (TREM-1) signalling and expression of its downstream cytokines. Moreover, AR signalling in THP-1 and monocyte-derived macrophages upregulates IL-10 and markers of tissue residency. In conclusion, our data suggest that AR signalling in macrophages may support PCa invasiveness, and blocking this process may constitute one mechanism of anti-androgen therapy. Anti-androgen therapy inhibits prostate cancer (PC) progression, and is thought to act directly on cancer cells. Here the authors show that androgen receptor is expressed on normal and PC-associated macrophages, and its stimulation alters macrophage secretome to promote migration of cultured PC cell lines.
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Affiliation(s)
- Bianca Cioni
- Divisions of Oncogenomics, The Netherlands Cancer Institute (NKI), Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Anniek Zaalberg
- Divisions of Oncogenomics, The Netherlands Cancer Institute (NKI), Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Judy R van Beijnum
- Angiogenesis laboratory, Medical Oncology, Amsterdam UMC, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Monique H M Melis
- Molecular Genetics, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | | | - Mauro J Muraro
- Hubrecht Institute - KNAW and University Medical Center Utrecht, Uppsalalaan 8, 3584CT, Utrecht, The Netherlands
| | - Erik Hooijberg
- Division of Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Dennis Peters
- Core Facility Molecular Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Ingrid Hofland
- Core Facility Molecular Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Yoni Lubeck
- Division of Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Jeroen de Jong
- Division of Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Joyce Sanders
- Division of Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Judith Vivié
- Hubrecht Institute - KNAW and University Medical Center Utrecht, Uppsalalaan 8, 3584CT, Utrecht, The Netherlands
| | - Henk G van der Poel
- Urology and Medical Oncology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Jan Paul de Boer
- Urology and Medical Oncology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Arjan W Griffioen
- Angiogenesis laboratory, Medical Oncology, Amsterdam UMC, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Wilbert Zwart
- Divisions of Oncogenomics, The Netherlands Cancer Institute (NKI), Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands. .,Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600MB, Eindhoven, The Netherlands. .,, Oncode Institute, The Netherlands.
| | - Andries M Bergman
- Divisions of Oncogenomics, The Netherlands Cancer Institute (NKI), Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands. .,Urology and Medical Oncology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands.
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19
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Tan C, Gurien SD, Royster W, Aziz M, Wang P. Extracellular CIRP Induces Inflammation in Alveolar Type II Cells via TREM-1. Front Cell Dev Biol 2020; 8:579157. [PMID: 32984356 PMCID: PMC7484489 DOI: 10.3389/fcell.2020.579157] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 08/12/2020] [Indexed: 01/27/2023] Open
Abstract
Extracellular cold-inducible RNA-binding protein (eCIRP) induces acute lung injury (ALI) in sepsis. Triggering receptor expressed on myeloid cells-1 (TREM-1) serves as a receptor for eCIRP to induce inflammation in macrophages and neutrophils. The effect of eCIRP on alveolar epithelial cells (AECs) remains unknown. We hypothesize that eCIRP induces inflammation in AECs through TREM-1. AECs were isolated from C57BL/6 mice and freshly isolated AECs were characterized as alveolar type II (ATII) cells by staining AECs with EpCAM, surfactant protein-C (SP-C), and T1 alpha (T1α) antibodies. AECs were stimulated with recombinant murine (rm) CIRP and assessed for TREM-1 by flow cytometry. ATII cells from WT and TREM-1-/- mice were stimulated with rmCIRP and assessed for interleukin-6 (IL-6) and chemokine (C-X-C motif) ligand 2 (CXCL2) in the culture supernatants. ATII cells from WT mice were pretreated with vehicle (PBS), M3 (TREM-1 antagonist), and LP17 (TREM-1 antagonist) and then after stimulating the cells with rmCIRP, IL-6 and CXCL2 levels in the culture supernatants were assessed. All of the freshly isolated AECs were ATII cells as they expressed EpCAM and SP-C, but not T1α (ATI cells marker). Treatment of ATII cells with rmCIRP significantly increased TREM-1 expression by 56% compared to PBS-treated ATII cells. Stimulation of WT ATII cells with rmCIRP increased IL-6 and CXCL2 expression, while the expression of IL-6 and CXCL2 in TREM-1-/- ATII cells were reduced by 14 and 23%, respectively. Pretreatment of ATII cells with M3 and LP17 significantly decreased the expression of IL-6 by 30 and 47%, respectively, and CXCL2 by 27 and 34%, respectively, compared to vehicle treated ATII cells after stimulation with rmCIRP. Thus, eCIRP induces inflammation in ATII cells via TREM-1 which implicates a novel pathophysiology of eCIRP-induced ALI and directs a possible therapeutic approach targeting eCIRP-TREM-1 interaction to attenuate ALI.
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Affiliation(s)
- Chuyi Tan
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
| | - Steven D Gurien
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, United States.,Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States
| | - William Royster
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, United States.,Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States
| | - Monowar Aziz
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
| | - Ping Wang
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, United States.,Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States
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20
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Price BR, Sudduth TL, Weekman EM, Johnson S, Hawthorne D, Woolums A, Wilcock DM. Therapeutic Trem2 activation ameliorates amyloid-beta deposition and improves cognition in the 5XFAD model of amyloid deposition. J Neuroinflammation 2020; 17:238. [PMID: 32795308 PMCID: PMC7427742 DOI: 10.1186/s12974-020-01915-0] [Citation(s) in RCA: 60] [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: 04/07/2020] [Accepted: 07/30/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Triggering receptor expressed on myeloid cell-2 (TREM2) is a lipid and lipoprotein binding receptor expressed by cells of myeloid origin. Homozygous TREM2 mutations cause early onset progressive presenile dementia while heterozygous, point mutations triple the risk of Alzheimer's disease (AD). Although human genetic findings support the notion that loss of TREM2 function exacerbates neurodegeneration, it is not clear whether activation of TREM2 in a disease state would result in therapeutic benefits. To determine the viability of TREM2 activation as a therapeutic strategy, we sought to characterize an agonistic Trem2 antibody (AL002a) and test its efficacy and mechanism of action in an aggressive mouse model of amyloid deposition. METHODS To determine whether agonism of Trem2 results in therapeutic benefits, we designed both intracranial and systemic administration studies. 5XFAD mice in the intracranial administration study were assigned to one of two injection groups: AL002a, a Trem2-agonizing antibody, or MOPC, an isotype-matched control antibody. Mice were then subject to a single bilateral intracranial injection into the frontal cortex and hippocampus and euthanized 72 h later. The tissue from the left hemisphere was histologically examined for amyloid-beta and microglia activation, whereas the tissue from the right hemisphere was used for biochemical analyses. Similarly, mice in the systemic administration study were randomized to one of the aforementioned injection groups and the assigned antibody was administered intraperitoneally once a week for 14 weeks. Mice underwent behavioral assessment between the 12- and 14-week timepoints and were euthanized 24 h after their final injection. The tissue from the left hemisphere was used for histological analyses whereas the tissue from the right hemisphere was used for biochemical analyses. RESULTS Here, we show that chronic activation of Trem2, in the 5XFAD mouse model of amyloid deposition, leads to reversal of the amyloid-associated gene expression signature, recruitment of microglia to plaques, decreased amyloid deposition, and improvement in spatial learning and novel object recognition memory. CONCLUSIONS These findings indicate that Trem2 activators may be effective for the treatment of AD and possibly other neurodegenerative disorders.
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Affiliation(s)
- Brittani R Price
- Sanders-Brown Center on Aging, College of Medicine, University of Kentucky, 800 S Limestone St, Lexington, KY, 40536, USA
- Department of Physiology, University of Kentucky, Lexington, KY, 40536, USA
| | - Tiffany L Sudduth
- Sanders-Brown Center on Aging, College of Medicine, University of Kentucky, 800 S Limestone St, Lexington, KY, 40536, USA
| | - Erica M Weekman
- Sanders-Brown Center on Aging, College of Medicine, University of Kentucky, 800 S Limestone St, Lexington, KY, 40536, USA
- Department of Physiology, University of Kentucky, Lexington, KY, 40536, USA
| | - Sherika Johnson
- Sanders-Brown Center on Aging, College of Medicine, University of Kentucky, 800 S Limestone St, Lexington, KY, 40536, USA
| | - Danielle Hawthorne
- Sanders-Brown Center on Aging, College of Medicine, University of Kentucky, 800 S Limestone St, Lexington, KY, 40536, USA
| | - Abigail Woolums
- Sanders-Brown Center on Aging, College of Medicine, University of Kentucky, 800 S Limestone St, Lexington, KY, 40536, USA
- Department of Physiology, University of Kentucky, Lexington, KY, 40536, USA
| | - Donna M Wilcock
- Sanders-Brown Center on Aging, College of Medicine, University of Kentucky, 800 S Limestone St, Lexington, KY, 40536, USA.
- Department of Physiology, University of Kentucky, Lexington, KY, 40536, USA.
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21
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Dantas PHDS, Matos ADO, da Silva Filho E, Silva-Sales M, Sales-Campos H. Triggering receptor expressed on myeloid cells-1 (TREM-1) as a therapeutic target in infectious and noninfectious disease: a critical review. Int Rev Immunol 2020; 39:188-202. [PMID: 32379561 DOI: 10.1080/08830185.2020.1762597] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The triggering receptor expressed on myeloid cells-1 (TREM-1) is an innate immune receptor found in the surface of several immune and non-immune cells. Since its first description in 2000, this molecule and its soluble form (sTREM-1) have been implicated in many diseases with infectious and noninfectious origins. As an amplifier of inflammation, the membrane-associated TREM-1 (mTREM-1) isoform induces the production of pro-inflammatory mediators, thus contributing to the pathogenesis of diseases such as sepsis, arthritis, colitis and infections. In this context, many studies have used molecules capable of inhibiting TREM-1 activity as anti-inflammatory drugs. In this regard, a few peptides have been showing promising results in the amelioration of detrimental immune responses. Some commercially available drugs, including corticosteroids and antibiotics, with known anti-inflammatory effects, have also shown activity in TREM-1 signaling. Therefore, considering the potential of this receptor as a therapeutic target, the present review encompasses the main compounds explored so far in TREM-1 modulation, highlighting and critically discussing its effects and major drawbacks of such approaches.
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Affiliation(s)
| | - Amanda de Oliveira Matos
- Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiânia, Goiás, Brazil
| | - Ernandes da Silva Filho
- Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiânia, Goiás, Brazil
| | - Marcelle Silva-Sales
- Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiânia, Goiás, Brazil
| | - Helioswilton Sales-Campos
- Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiânia, Goiás, Brazil
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de Oliveira Matos A, Dos Santos Dantas PH, Figueira Marques Silva-Sales M, Sales-Campos H. The role of the triggering receptor expressed on myeloid cells-1 (TREM-1) in non-bacterial infections. Crit Rev Microbiol 2020; 46:237-252. [PMID: 32326783 DOI: 10.1080/1040841x.2020.1751060] [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] [Indexed: 02/07/2023]
Abstract
The triggering receptor expressed on myeloid cells 1 (TREM-1) is a receptor of the innate immune system, expressed mostly by myeloid cells and primarily associated with pro- inflammatory responses. Although the exact nature of its ligands has not yet been fully elucidated, many microorganisms or danger signals have been proposed as inducers of its activation or the secretion of sTREM-1, the soluble form with putative anti-inflammatory effects. In the course of the 20 years since its first description, several studies have investigated the involvement of TREM-1 in bacterial infections. However, the number of studies describing the role of TREM-1 in fungal, viral and parasite-associated infections has only increased in the last few years, showing a diverse contribution of the receptor in these scenarios, with beneficial or detrimental activities depending on the context. Therefore, this review aims to discuss how TREM-1 may influence viral, fungal and parasitic infection outcomes, highlighting its potential as a therapeutic target and biomarker for diagnosis and prognosis of non-bacterial infectious diseases.
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Singh AK, Mishra G, Maurya A, Awasthi R, Kumari K, Thakur A, Rai A, Rai GK, Sharma B, Kulkarni GT, Singh SK. Role of TREM2 in Alzheimer's Disease and its Consequences on β- Amyloid, Tau and Neurofibrillary Tangles. Curr Alzheimer Res 2020; 16:1216-1229. [DOI: 10.2174/1567205016666190903102822] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/21/2019] [Accepted: 08/21/2019] [Indexed: 11/22/2022]
Abstract
:
Alzheimer's Disease (AD) is age-related neurodegenerative disorder recognized by a steadily
gradual cognitive decline that has devastating personal and socioeconomic implications. Recently, some
genetic factors for AD have been identified which attracted wide attention of researchers in different
areas of AD biology and possible new therapeutic targets. Alternative forms of triggering receptor expressed
on myeloid cells 2 (TREM2) genes are examples of such risk factors, which contribute higher
risk for developing AD. Comprehending TREM2 function pledge to provide salient insight into how
neuroinflammation contributes to AD pathology. The dearth of microglial TREM2 shepherd to augmented
tau pathology is couple with frequent enhancement of activated neuronal stress kinases. The involvement
of TREM2 in the regulation of tau-associated innate immune response of the CNS has clearly
demonstrated through these findings. However, whether decrease level of TREM2 assists pathology of
tau through changed clearance and pathological escalation of tau or through direct contact between microglia
and neuron and any alternative possible mechanisms need to examine. This review briefly summarizes
distinct functional roles of TREM2 in AD pathology and highlights the TREM2 gene regulation.
We have also addressed the impact of TREM2 on β-amyloid plaques and tau pathology in Alzheimer’s
disease.
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Affiliation(s)
- Anurag K. Singh
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
| | - Gaurav Mishra
- Department of Pharmacy, School of Chemical Sciences & Pharmacy, Central University of Rajasthan, Bandar Sindri, Kishangarh, Ajmer-305817, Rajasthan, India
| | - Anand Maurya
- Department of Pharmacy, School of Chemical Sciences & Pharmacy, Central University of Rajasthan, Bandar Sindri, Kishangarh, Ajmer-305817, Rajasthan, India
| | - Rajendra Awasthi
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University Uttar Pradesh, Sector 125, Noida - 201303, India
| | - Komal Kumari
- Department of Pharmacy, School of Chemical Sciences & Pharmacy, Central University of Rajasthan, Bandar Sindri, Kishangarh, Ajmer-305817, Rajasthan, India
| | - Abhimanyu Thakur
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China
| | - Arati Rai
- Hygia Institute of Pharmaceutical Education & Research, Lucknow-226020, Uttar Pradesh, India
| | - Gopal Kumar Rai
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi- 221005, Uttar Pradesh, India
| | - Bhupesh Sharma
- Department of Pharmacology, Amity Institute of Pharmacy, Amity University Uttar Pradesh, Sector 125, Noida - 201303, India
| | - Giriraj T Kulkarni
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University Uttar Pradesh, Sector 125, Noida - 201303, India
| | - Santosh Kumar Singh
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
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Syed MA, Shah D, Das P, Andersson S, Pryhuber G, Bhandari V. TREM-1 Attenuates RIPK3-mediated Necroptosis in Hyperoxia-induced Lung Injury in Neonatal Mice. Am J Respir Cell Mol Biol 2019; 60:308-322. [PMID: 30281332 DOI: 10.1165/rcmb.2018-0219oc] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hyperoxia-induced injury to the developing lung, impaired alveolarization, and dysregulated vascularization are critical factors in the pathogenesis of bronchopulmonary dysplasia (BPD); however, mechanisms for hyperoxia-induced development of BPD are not fully known. In this study, we show that TREM-1 (triggering receptor expressed on myeloid cells 1) is upregulated in hyperoxia-exposed neonatal murine lungs as well as in tracheal aspirates and lungs of human neonates with respiratory distress syndrome and BPD as an adaptive response to survival in hyperoxia. Inhibition of TREM-1 function using an siRNA approach or deletion of the Trem1 gene in mice showed enhanced lung inflammation, alveolar damage, and mortality of hyperoxia-exposed neonatal mice. The treatment of hyperoxia-exposed neonatal mice with agonistic TREM-1 antibody decreased lung inflammation, improved alveolarization, and was associated with diminished necroptosis-regulating protein RIPK3 (receptor-interacting protein kinase 3). Mechanistically, we show that TREM-1 activation alleviates lung inflammation and improves alveolarization through downregulating RIPK3-mediated necroptosis and NLRP3 (nucleotide-binding oligomerization domain-like receptor containing pyrin domain 3) inflammasome activation in hyperoxia-exposed neonatal mice. These data show that activating TREM-1, enhancing angiopoietin 1 signaling, or blocking the RIPK3-mediated necroptosis pathway may be used in new therapeutic interventions to control adverse effects of hyperoxia in the development of BPD.
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Affiliation(s)
- Mansoor Ali Syed
- 1 Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Dilip Shah
- 1 Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Pragnya Das
- 1 Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Sture Andersson
- 2 Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; and
| | - Gloria Pryhuber
- 3 Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Vineet Bhandari
- 1 Drexel University College of Medicine, Philadelphia, Pennsylvania
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Gibot S, Jolly L, Lemarié J, Carrasco K, Derive M, Boufenzer A. Triggering Receptor Expressed on Myeloid Cells-1 Inhibitor Targeted to Endothelium Decreases Cell Activation. Front Immunol 2019; 10:2314. [PMID: 31632399 PMCID: PMC6779727 DOI: 10.3389/fimmu.2019.02314] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 09/12/2019] [Indexed: 12/21/2022] Open
Abstract
TREM-1 (Triggering Receptor Expressed on Myeloid cells-1) is an immunoreceptor expressed on neutrophils, monocytes/macrophages, and endothelial cells. It amplifies the inflammatory response driven by Toll-Like Receptors (TLR) engagement. The pharmacological inhibition of TREM-1 confers protection in several pre-clinical models of acute inflammation. In this study, we aimed to investigate the role of TREM-1 in endothelial cells using a sneaking ligand construct (SLC) inhibiting TREM-1 in the endothelium. The SLC was made of 3 modules: an E-selectin targeting domain, a Pseudomonas aeruginosa exotoxin a translocation domain, and a 7 aa peptide (LSKSLVF) that contains the interaction site between TREM-1 and its adaptor protein DAP-12. SLC peptide was effectively picked up by endothelial cells following LPS stimulation. It decreased LPS induced TREM-1 up-regulation and cell activation, neutrophils extravasation, and improved median survival time during experimental peritonitis in mice. We reported that a targeted endothelial TREM-1 inhibition is able to dampen cell activation and to confer protection during septic shock in mice. The use of such cell-specific, ligand- independent TREM-1 inhibitors deserve further investigations during acute or chronic inflammatory disorders.
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Affiliation(s)
- Sébastien Gibot
- INSERM UMRS-1116, Faculté de Médecine Nancy, Université de Lorraine, Nancy, France.,CHRU Nancy, Hôpital Central, Service de Réanimation Médicale, Nancy, France
| | | | - Jérémie Lemarié
- INSERM UMRS-1116, Faculté de Médecine Nancy, Université de Lorraine, Nancy, France.,CHRU Nancy, Hôpital Central, Service de Réanimation Médicale, Nancy, France
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Kim SM, Kim EM, Ji KY, Lee HY, Yee SM, Woo SM, Yi JW, Yun CH, Choi H, Kang HS. TREM2 Acts as a Tumor Suppressor in Colorectal Carcinoma through Wnt1/ β-catenin and Erk Signaling. Cancers (Basel) 2019; 11:cancers11091315. [PMID: 31489935 PMCID: PMC6770495 DOI: 10.3390/cancers11091315] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 08/30/2019] [Accepted: 09/05/2019] [Indexed: 01/22/2023] Open
Abstract
TREM2 (triggering receptor expressed on myeloid cells) is involved in the development of malignancies. However, the function of TREM2 in colorectal cancer has not been clearly elucidated. Here, we investigated TREM2 function for the first time in colorectal epithelial cancer cells and demonstrated that TREM2 is a novel tumor suppressor in colorectal carcinoma. Blockade of TREM2 significantly promoted the proliferation of HT29 colorectal carcinoma cells by regulating cell cycle-related factors, such as p53 phosphorylation and p21 and cyclin D1 protein levels. HT29 cell migration was also increased by TREM2 inhibition via MMP9 (matrix metalloproteinase 9) expression upregulation. Furthermore, we found that the tumor suppressor effects of TREM2 were associated with Wnt/β-catenin and extracellular signal-regulated kinase (ERK) signaling. Importantly, the effect of TREM2 in the suppression of tumor development was demonstrated by in vivo and in vitro assays, as well as in human colon cancer patient tissue arrays. Overall, our results identify TREM2 as a potential prognostic biomarker and therapeutic target for colorectal cancer.
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Affiliation(s)
- Su-Man Kim
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 500-757, Korea.
| | - Eun-Mi Kim
- Korea Institute of Toxicology, Daejeon, 34114, Korea.
| | - Kon-Young Ji
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea.
| | - Hwa-Youn Lee
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 701-310, Korea.
| | - Su-Min Yee
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 500-757, Korea.
| | - Su-Min Woo
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 500-757, Korea.
| | - Ja-Woon Yi
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 500-757, Korea.
| | - Chul-Ho Yun
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 500-757, Korea.
| | - Harim Choi
- Department of Nursing, Nambu University, Gwangju 506-706, Korea.
| | - Hyung-Sik Kang
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 500-757, Korea.
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Jolly L, Carrasco K, Derive M, Lemarié J, Boufenzer A, Gibot S. Targeted endothelial gene deletion of triggering receptor expressed on myeloid cells-1 protects mice during septic shock. Cardiovasc Res 2019; 114:907-918. [PMID: 29361046 DOI: 10.1093/cvr/cvy018] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 01/18/2018] [Indexed: 12/21/2022] Open
Abstract
Aims TREM-1 (Triggering Receptor Expressed on Myeloid cells-1) is an immunoreceptor expressed on neutrophils and monocytes/macrophages whose role is to amplify the inflammatory response driven by Toll-Like Receptors engagement. The pharmacological inhibition of TREM-1 confers protection in several pre-clinical models of acute inflammation. In this study, we aimed to decipher the role of TREM-1 on the endothelium. Methods and results We first showed by qRT-PCR, flow cytometry and confocal microscopy that TREM-1 was expressed in human pulmonary microvascular endothelial cells as well as in mouse vasculature (aorta, mesenteric artery, and pulmonary vessels). TREM-1 expression was upregulated following septic insult. We next observed that TREM-1 engagement impaired mouse vascular reactivity and promoted vascular inflammation. The pharmacological inhibition of TREM-1 (using the synthetic inhibitory peptide LR12) prevented these disorders both in vitro and in vivo. We generated endothelium-conditional Trem-1 ko mice (EndoTREM-1-/-) and submitted them to a caecal ligation and puncture-induced septic shock. As compared with wild-type littermates, targeted endothelial Trem-1 deletion conferred protection during septic shock in modulating inflammatory cells mobilization and activation, in restoring vasoreactivity, and in improving the survival. Conclusion We reported that TREM-1 is expressed and inducible in endothelial cells and plays a direct role in vascular inflammation and dysfunction. The targeted deletion of endothelial Trem-1 conferred protection during septic shock in modulating inflammatory cells mobilization and activation, restoring vasoreactivity, and improving survival. The effect of TREM-1 on vascular tone, while impressive, deserves further investigations including the design of endothelium-specific TREM-1 inhibitors.
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Affiliation(s)
- Lucie Jolly
- INSERM UMRS-1116, Faculté de Médecine Nancy, Université de Lorraine, Nancy, France.,INOTREM SA, Nancy, France
| | - Kevin Carrasco
- INSERM UMRS-1116, Faculté de Médecine Nancy, Université de Lorraine, Nancy, France
| | | | - Jérémie Lemarié
- INSERM UMRS-1116, Faculté de Médecine Nancy, Université de Lorraine, Nancy, France.,CHRU Nancy, Service de Réanimation Médicale, Hôpital Central, 29 Avenue de Lattre de Tassigny, Nancy Cedex 54035, France
| | | | - Sébastien Gibot
- INSERM UMRS-1116, Faculté de Médecine Nancy, Université de Lorraine, Nancy, France.,CHRU Nancy, Service de Réanimation Médicale, Hôpital Central, 29 Avenue de Lattre de Tassigny, Nancy Cedex 54035, France
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Perugorria MJ, Esparza-Baquer A, Oakley F, Labiano I, Korosec A, Jais A, Mann J, Tiniakos D, Santos-Laso A, Arbelaiz A, Gawish R, Sampedro A, Fontanellas A, Hijona E, Jimenez-Agüero R, Esterbauer H, Stoiber D, Bujanda L, Banales JM, Knapp S, Sharif O, Mann DA. Non-parenchymal TREM-2 protects the liver from immune-mediated hepatocellular damage. Gut 2019; 68:533-546. [PMID: 29374630 PMCID: PMC6580759 DOI: 10.1136/gutjnl-2017-314107] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 12/26/2017] [Accepted: 12/28/2017] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Liver injury impacts hepatic inflammation in part via Toll-like receptor (TLR) signalling. Triggering receptor expressed on myeloid cells 2 (TREM-2) modulates TLR4-mediated inflammation in bone marrow (BM)-derived macrophages but its function in liver injury is unknown. Here we hypothesised that the anti-inflammatory effects of TREM-2 on TLR signalling may limit hepatic injury. DESIGN TREM-2 expression was analysed in livers of humans with various forms of liver injury compared with control individuals. Acute and chronic liver injury models were performed in wild type and Trem-2-/- mice. Primary liver cells from both genotypes of mice were isolated for in vitro experiments. RESULTS TREM-2 was expressed on non-parenchymal hepatic cells and induced during liver injury in mice and man. Mice lacking TREM-2 exhibited heightened liver damage and inflammation during acute and repetitive carbon tetrachloride and acetaminophen (APAP) intoxication, the latter of which TREM-2 deficiency was remarkably associated with worsened survival. Liver damage in Trem-2-/- mice following chronic injury and APAP challenge was associated with elevated hepatic lipid peroxidation and macrophage content. BM transplantation experiments and cellular reactive oxygen species assays revealed effects of TREM-2 in the context of chronic injury depended on both immune and resident TREM-2 expression. Consistent with effects of TREM-2 on inflammation-associated injury, primary hepatic macrophages and hepatic stellate cells lacking TREM-2 exhibited augmented TLR4-driven proinflammatory responses. CONCLUSION Our data indicate that by acting as a natural brake on inflammation during hepatocellular injury, TREM-2 is a critical regulator of diverse types of hepatotoxic injury.
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Affiliation(s)
- Maria J Perugorria
- Newcastle Fibrosis Research Group, Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- Department of Liver and Gastrointestinal Diseases, Biodonostia Research Institute, Donostia University Hospital, University of the Basque Country (UPV-EHU), San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
- CIBERehd, Instituto de Salud Carlos III, San Sebastián, Spain
| | - Aitor Esparza-Baquer
- Department of Liver and Gastrointestinal Diseases, Biodonostia Research Institute, Donostia University Hospital, University of the Basque Country (UPV-EHU), San Sebastian, Spain
| | - Fiona Oakley
- Newcastle Fibrosis Research Group, Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Ibone Labiano
- Department of Liver and Gastrointestinal Diseases, Biodonostia Research Institute, Donostia University Hospital, University of the Basque Country (UPV-EHU), San Sebastian, Spain
| | - Ana Korosec
- CeMM, Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria
| | - Alexander Jais
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Jelena Mann
- Newcastle Fibrosis Research Group, Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Dina Tiniakos
- Newcastle Fibrosis Research Group, Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Alvaro Santos-Laso
- Department of Liver and Gastrointestinal Diseases, Biodonostia Research Institute, Donostia University Hospital, University of the Basque Country (UPV-EHU), San Sebastian, Spain
| | - Ander Arbelaiz
- Department of Liver and Gastrointestinal Diseases, Biodonostia Research Institute, Donostia University Hospital, University of the Basque Country (UPV-EHU), San Sebastian, Spain
| | - Riem Gawish
- CeMM, Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria
| | - Ana Sampedro
- Hepatology Programme, CIMA, University of Navarra, Pamplona, Spain
| | | | - Elizabeth Hijona
- Department of Liver and Gastrointestinal Diseases, Biodonostia Research Institute, Donostia University Hospital, University of the Basque Country (UPV-EHU), San Sebastian, Spain
- CIBERehd, Instituto de Salud Carlos III, San Sebastián, Spain
| | - Raul Jimenez-Agüero
- Department of Liver and Gastrointestinal Diseases, Biodonostia Research Institute, Donostia University Hospital, University of the Basque Country (UPV-EHU), San Sebastian, Spain
| | - Harald Esterbauer
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Dagmar Stoiber
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria
| | - Luis Bujanda
- Department of Liver and Gastrointestinal Diseases, Biodonostia Research Institute, Donostia University Hospital, University of the Basque Country (UPV-EHU), San Sebastian, Spain
- CIBERehd, Instituto de Salud Carlos III, San Sebastián, Spain
| | - Jesus María Banales
- Department of Liver and Gastrointestinal Diseases, Biodonostia Research Institute, Donostia University Hospital, University of the Basque Country (UPV-EHU), San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
- CIBERehd, Instituto de Salud Carlos III, San Sebastián, Spain
| | - Sylvia Knapp
- CeMM, Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria
| | - Omar Sharif
- CeMM, Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria
| | - Derek A Mann
- Newcastle Fibrosis Research Group, Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
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Gao S, Yi Y, Xia G, Yu C, Ye C, Tu F, Shen L, Wang W, Hua C. The characteristics and pivotal roles of triggering receptor expressed on myeloid cells-1 in autoimmune diseases. Autoimmun Rev 2018; 18:25-35. [PMID: 30408584 DOI: 10.1016/j.autrev.2018.07.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 07/09/2018] [Indexed: 01/13/2023]
Abstract
Triggering receptor expressed on myeloid cells-1 (TREM-1) engagement can directly trigger inflammation or amplify an inflammatory response by synergizing with TLRs or NLRs. Autoimmune diseases are a family of chronic systemic inflammatory disorders. The pivotal role of TREM-1 in inflammation makes it important to explore its immunological effects in autoimmune diseases. In this review, we summarize the structural and functional characteristics of TREM-1. Particularly, we discuss recent findings on TREM-1 pathway regulation in various autoimmune diseases, including rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), inflammatory bowel disease (IBD), type 1 diabetes (T1D), and psoriasis. This receptor may potentially be manipulated to alter the inflammatory response to chronic inflammation and possible therapies are explored in this review.
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Affiliation(s)
- Sheng Gao
- Laboratory Animal Center, Wenzhou Medical University, Wenzhou 325035, Zhejiang Province, China
| | - Yongdong Yi
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China
| | - Guojun Xia
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China
| | - Chengyang Yu
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China
| | - Chenmin Ye
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China
| | - Fuyang Tu
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China
| | - Leibin Shen
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China
| | - Wenqian Wang
- Department of Breast Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China.
| | - Chunyan Hua
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang Province, China.
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30
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Otto PI, Guimarães SEF, Verardo LL, Azevedo ALS, Vandenplas J, Soares ACC, Sevillano CA, Veroneze R, de Fatima A Pires M, de Freitas C, Prata MCA, Furlong J, Verneque RS, Martins MF, Panetto JCC, Carvalho WA, Gobo DOR, da Silva MVGB, Machado MA. Genome-wide association studies for tick resistance in Bos taurus × Bos indicus crossbred cattle: A deeper look into this intricate mechanism. J Dairy Sci 2018; 101:11020-11032. [PMID: 30243625 DOI: 10.3168/jds.2017-14223] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 05/29/2018] [Indexed: 01/12/2023]
Abstract
Rhipicephalus (Boophilus) microplus is the main cattle ectoparasite in tropical areas. Gir × Holstein crossbred cows are well adapted to different production systems in Brazil. In this context, we performed genome-wide association study (GWAS) and post-GWAS analyses for R. microplus resistance in an experimental Gir × Holstein F2 population. Single nucleotide polymorphisms (SNP) identified in GWAS were used to build gene networks and to investigate the breed of origin for its alleles. Tick artificial infestations were performed during the dry and rainy seasons. Illumina BovineSNP50 BeadChip (Illumina Inc., San Diego, CA) and single-step BLUP procedure was used for GWAS. Post-GWAS analyses were performed by gene ontology terms enrichment and gene transcription factors networks, generated from enriched transcription factors, identified from the promoter sequences of selected gene sets. The genetic origin of marker alleles in the F2 population was assigned using the breed of origin of alleles approach. Heritability estimates for tick counts were 0.40 ± 0.11 in the rainy season and 0.54 ± 0.11 in the dry season. The top ten 0.5-Mbp windows with the highest percentage of genetic variance explained by SNP markers were found in chromosomes 10 and 23 for both the dry and rainy seasons. Gene network analyses allowed the identification of genes involved with biological processes relevant to immune system functions (TREM1, TREM2, and CD83). Gene-transcription factors network allowed the identification of genes involved with immune functions (MYO5A, TREML1, and PRSS16). In resistant animals, the average proportion of animals showing significant SNPs with paternal and maternal alleles originated from Gir breed was 44.8% whereas the proportion of animals with both paternal and maternal alleles originated from Holstein breed was 11.3%. Susceptible animals showing both paternal and maternal alleles originated from Holstein breed represented 44.6% on average, whereas both paternal and maternal alleles originated from Gir breed animals represented 9.3%. This study allowed us to identify candidate genes for tick resistance in Gir × Holstein crossbreds in both rainy and dry seasons. According to the origin of alleles analysis, we found that most animals classified as resistant showed 2 alleles from Gir breed, while the susceptible ones showed alleles from Holstein. Based on these results, the identified genes may be thoroughly investigated in additional experiments aiming to validate their effects on tick resistance phenotype in cattle.
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Affiliation(s)
- Pamela I Otto
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG, 36570-977 Brazil
| | - Simone E F Guimarães
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG, 36570-977 Brazil
| | - Lucas L Verardo
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG, 36570-977 Brazil
| | | | - Jeremie Vandenplas
- Wageningen University & Research Animal Breeding and Genomics, 6700 AH Wageningen, the Netherlands
| | - Aline C C Soares
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG, 36570-977 Brazil
| | - Claudia A Sevillano
- Wageningen University & Research Animal Breeding and Genomics, 6700 AH Wageningen, the Netherlands; Topigs Norsvin Research Center, 6640 AA Beuningen, the Netherlands
| | - Renata Veroneze
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG, 36570-977 Brazil
| | | | - Célio de Freitas
- EMBRAPA, Dairy Cattle Research Center, Juiz de Fora, MG, 36038-330 Brazil
| | | | - John Furlong
- EMBRAPA, Dairy Cattle Research Center, Juiz de Fora, MG, 36038-330 Brazil
| | - Rui S Verneque
- EMBRAPA, Dairy Cattle Research Center, Juiz de Fora, MG, 36038-330 Brazil
| | | | | | - Wanessa A Carvalho
- EMBRAPA, Dairy Cattle Research Center, Juiz de Fora, MG, 36038-330 Brazil
| | - Diego O R Gobo
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG, 36570-977 Brazil
| | | | - Marco A Machado
- EMBRAPA, Dairy Cattle Research Center, Juiz de Fora, MG, 36038-330 Brazil.
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Zhao Y, Guo Y, Jiang Y, Zhu X, Zhang X. Vitamin D suppresses macrophage infiltration by down-regulation of TREM-1 in diabetic nephropathy rats. Mol Cell Endocrinol 2018; 473:44-52. [PMID: 29331667 DOI: 10.1016/j.mce.2018.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 01/02/2018] [Accepted: 01/04/2018] [Indexed: 01/30/2023]
Abstract
This study intends to investigate the effect of active vitamin D (VD) on the expression of triggering receptor expressed on myeloid cells-1 (TREM-1) in the renal tissues of diabetic nephropathy (DN) rats and to explore the impact of TREM-1 on macrophage adhesion and migration. We find that the expressions of TREM-1 and CD68 protein are higher in DN rats compared with rats in the normal control group and that these changes are decreased in the DN + VD group. In vitro, the capacity for macrophage adhesion and migration and the expression of TREM-1 are increased under high-glucose conditions, but VD inhibits this progress. TREM-1 siRNA decreases high-glucose-induced macrophage adhesion and migration, whereas over-expression of TREM-1 inhibits its action. However, VD cannot suppress high glucose-induced TREM-1 expression and macrophage adhesion and migration when TREM-1 is over-expressed. These results demonstrate that VD can suppress macrophage adhesion and migration by reducing the expression of TREM-1.
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Affiliation(s)
- Yu Zhao
- Institute of Nephrology, Zhong Da Hospital, Southeast University, School of Medicine, Nanjing, Jiangsu, 210009, China
| | - Yinfeng Guo
- Institute of Nephrology, Zhong Da Hospital, Southeast University, School of Medicine, Nanjing, Jiangsu, 210009, China
| | - Yuteng Jiang
- Institute of Nephrology, Zhong Da Hospital, Southeast University, School of Medicine, Nanjing, Jiangsu, 210009, China
| | - Xiaodong Zhu
- Institute of Nephrology, Zhong Da Hospital, Southeast University, School of Medicine, Nanjing, Jiangsu, 210009, China
| | - Xiaoliang Zhang
- Institute of Nephrology, Zhong Da Hospital, Southeast University, School of Medicine, Nanjing, Jiangsu, 210009, China.
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Kuemmel A, Alflen A, Schmidt LH, Sebastian M, Wiewrodt R, Schulze AB, Buhl R, Radsak M. Soluble Triggering Receptor Expressed on Myeloid Cells 1 in lung cancer. Sci Rep 2018; 8:10766. [PMID: 30018308 PMCID: PMC6050254 DOI: 10.1038/s41598-018-28971-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 07/02/2018] [Indexed: 01/18/2023] Open
Abstract
Soluble Triggering Receptor Expressed on Myeloid Cells 1 (sTREM-1) can be found in the sera of patients with infectious, autoimmune and malignant diseases. The primary objective of this study was to investigate the prognostic significance of sTREM-1 in lung cancer patients. We analyzed the sera of 164 patients with lung cancer of all histologies and all stages at the time of diagnosis. We employed an ELISA using the anti-TREM-1 clone 6B1.1G12 mAb and recombinant human TREM-1. Patient data was collected retrospectively by chart review. In ROC-analysis, a sTREM-1 serum level of 163.1 pg/ml showed the highest Youden-Index. At this cut-off value sTREM-1 was a marker of short survival in patients with NSCLC (median survival 8.5 vs. 13.3 months, p = 0.04). A Cox regression model showed stage (p < 0.001) and sTREM-1 (p = 0.011) to indicate short survival. There were no differences in sTREM-1 serum values among patients with or without infection, pleural effusion or COPD. sTREM-1 was not associated with metastasis at the time of diagnosis and was not a predictor of subsequent metastasis. In SCLC patients sTREM-1 levels were lower than in NSCLC patients (p = 0.001) and did not predict survival. sTREM-1 did not correlate with CRP or the number of neutrophils. In non-small cell lung cancer patients, sTREM-1 in serum has prognostic significance.
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Affiliation(s)
- Andreas Kuemmel
- Department of Hematology, Medical Oncology & Pneumology, University Medical Center Mainz, 55131, Mainz, Germany.
| | - Astrid Alflen
- Department of Hematology, Medical Oncology & Pneumology, University Medical Center Mainz, 55131, Mainz, Germany
| | - Lars Henning Schmidt
- Department of Medicine A, Hematology, Oncology and Pulmonary Medicine, University Hospital Medical Center Muenster, 48149, Muenster, Germany
| | - Martin Sebastian
- Medical Clinic II, University Hospital Frankfurt, Goethe University Frankfurt, 60590, Frankfurt am Main, Germany
| | - Rainer Wiewrodt
- Department of Medicine A, Hematology, Oncology and Pulmonary Medicine, University Hospital Medical Center Muenster, 48149, Muenster, Germany
| | - Arik Bernard Schulze
- Department of Medicine A, Hematology, Oncology and Pulmonary Medicine, University Hospital Medical Center Muenster, 48149, Muenster, Germany
| | - Roland Buhl
- Department of Hematology, Medical Oncology & Pneumology, University Medical Center Mainz, 55131, Mainz, Germany
| | - Markus Radsak
- Department of Hematology, Medical Oncology & Pneumology, University Medical Center Mainz, 55131, Mainz, Germany
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Tammaro A, Derive M, Gibot S, Leemans JC, Florquin S, Dessing MC. TREM-1 and its potential ligands in non-infectious diseases: from biology to clinical perspectives. Pharmacol Ther 2017; 177:81-95. [PMID: 28245991 DOI: 10.1016/j.pharmthera.2017.02.043] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Triggering receptor expressed on myeloid cells-1 (TREM-1) is expressed on the majority of innate immune cells and to a lesser extent on parenchymal cells. Upon activation, TREM-1 can directly amplify an inflammatory response. Although it was initially demonstrated that TREM-1 was predominantly associated with infectious diseases, recent evidences shed new light into its role in sterile inflammatory diseases. Indeed, TREM-1 receptor and its signaling pathways contribute to the pathology of several non-infectious acute and chronic inflammatory diseases, including atherosclerosis, ischemia reperfusion-induced tissue injury, colitis, fibrosis and cancer. This review, aims to give an extensive overview of TREM-1 in non-infectious diseases, with the focus on the therapeutic potential of TREM-1 intervention strategies herein. In addition, we provide the reader with a functional enrichment analysis of TREM-1 signaling pathway and potential TREM-1 ligands in these diseases, obtained via in silico approach. We discuss pre-clinical studies which show that TREM-1 inhibition, via synthetic soluble TREM-1 protein mimickers, is effective in treating (preventing) specific inflammatory disorders, without significant effects on antibacterial response. Further research aimed at identifying specific TREM-1 ligands, in different inflammatory disorders, is required to further unravel the role of this receptor, and explore new avenues to modulate its function.
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Affiliation(s)
- Alessandra Tammaro
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | | | - Sebastien Gibot
- Medical Intensive Care Unit, Hôpital Central, CHU Nancy, Nancy, France; Inserm UMR_S1116, Faculté de Médecine, Université de Lorraine, Nancy, France
| | - Jaklien C Leemans
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Sandrine Florquin
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Pathology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
| | - Mark C Dessing
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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Yeh FL, Hansen DV, Sheng M. TREM2, Microglia, and Neurodegenerative Diseases. Trends Mol Med 2017; 23:512-533. [DOI: 10.1016/j.molmed.2017.03.008] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 02/15/2017] [Accepted: 03/26/2017] [Indexed: 01/17/2023]
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Effect of TREM-1 blockade and single nucleotide variants in experimental renal injury and kidney transplantation. Sci Rep 2016; 6:38275. [PMID: 27928159 PMCID: PMC5143803 DOI: 10.1038/srep38275] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 11/07/2016] [Indexed: 12/18/2022] Open
Abstract
Renal ischemia reperfusion (IR)-injury induces activation of innate immune response which sustains renal injury and contributes to the development of delayed graft function (DGF). Triggering receptor expressed on myeloid cells-1 (TREM-1) is a pro-inflammatory evolutionary conserved pattern recognition receptor expressed on a variety of innate immune cells. TREM-1 expression increases following acute and chronic renal injury. However, the function of TREM-1 in renal IR is still unclear. Here, we investigated expression and function of TREM-1 in a murine model of renal IR using different TREM-1 inhibitors: LP17, LR12 and TREM-1 fusion protein. In a human study, we analyzed the association of non-synonymous single nucleotide variants in the TREM1 gene in a cohort comprising 1263 matching donors and recipients with post-transplant outcomes, including DGF. Our findings demonstrated that, following murine IR, renal TREM-1 expression increased due to the influx of Trem1 mRNA expressing cells detected by in situ hybridization. However, TREM-1 interventions by means of LP17, LR12 and TREM-1 fusion protein did not ameliorate IR-induced injury. In the human renal transplant cohort, donor and recipient TREM1 gene variant p.Thr25Ser was not associated with DGF, nor with biopsy-proven rejection or death-censored graft failure. We conclude that TREM-1 does not play a major role during experimental renal IR and after kidney transplantation.
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Tu C, Wang S, Hu X, Wang W, Dong Y, Xiao S, Wang X. Lipopolysaccharide induces TREM-1-dependent HIF-1α expression in human keratinocyte cell line. Cell Biol Int 2016; 40:1357-1365. [PMID: 27743451 DOI: 10.1002/cbin.10693] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 10/12/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Chen Tu
- Department of Dermatology; Second Affiliated Hospital of Xi'an Jiaotong University; Xi'an Shaanxi 710004 China
| | - Shuang Wang
- Department of Dermatology; Second Affiliated Hospital of Xi'an Jiaotong University; Xi'an Shaanxi 710004 China
| | - Xiao Hu
- Department of Dermatology; Second Affiliated Hospital of Xi'an Jiaotong University; Xi'an Shaanxi 710004 China
| | - Wenju Wang
- Department of Dermatology; Second Affiliated Hospital of Lanzhou University; Lanzhou Gansu 730030 China
| | - Yingying Dong
- Department of Dermatology; Second Affiliated Hospital of Xi'an Jiaotong University; Xi'an Shaanxi 710004 China
| | - Shengxiang Xiao
- Department of Dermatology; Second Affiliated Hospital of Xi'an Jiaotong University; Xi'an Shaanxi 710004 China
| | - Xiaopeng Wang
- Department of Dermatology; Second Affiliated Hospital of Xi'an Jiaotong University; Xi'an Shaanxi 710004 China
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Chen SS, Wang K, Zhao J, Wu WC, Wu YF, Zhao L. Increased expression of triggering receptor expressed on myeloid cells 1 and 2 in inflamed human gingiva. J Periodontal Res 2016; 52:512-521. [PMID: 27624412 DOI: 10.1111/jre.12417] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2016] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND OBJECTIVE Periodontitis is an infectious disease in which the host immune and inflammatory responses play essential roles in resistance to bacterial infection, as well as the induction of tissue destruction if the immune response is dysregulated. The triggering receptor expressed on myeloid cells (TREMs) modulates inflammatory and innate immune signaling. TREM-1 is considered as an amplifier of the immune response, while TREM-2 is a negative regulator that has yet to be explored in periodontal disease before. We hypothesized that TREMs participated in the innate immune responses during the pathogenesis of periodontitis. Therefore, the aim of this study was to evaluate TREM-1 and TREM-2 expression in the gingival tissues from patients with chronic periodontitis and healthy subjects as well as their correlation with clinical periodontal parameters. This study is the first to identify TREM-2 in periodontal tissue, as well as the protein expression changes of TREM-1 and TREM-2 in periodontal tissues. MATERIAL AND METHODS Gingival tissue sections were collected from 31 healthy subjects and 53 patients with chronic periodontitis. Immunohistochemistry and quantitative real-time polymerase chain reaction were employed to evaluate the protein and mRNA expression of these receptors in gingival tissues. The recorded clinical parameters were probing depth, clinical attachment loss, plaque index and bleeding on probing. RESULTS In addition to myeloid cells in gingival connective tissues, TREM-1 and TREM-2 were also found expressed in gingival epithelial cells. In particular, TREM-1 was detected in almost all gingival epithelium from both healthy and inflamed biopsies. The expression levels of TREM-1 and TREM-2 were significantly increased in the periodontitis group compared to the healthy group. Increased levels of these receptors are to be positively correlated with site-specific periodontal parameters. CONCLUSION The increased expression of TREM-1 and TREM-2 levels in periodontitis may confer diagnostic and potential therapeutic targets as well as indicating their association with the clinical severity of the disease.
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Affiliation(s)
- S S Chen
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - K Wang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China.,Department of Stomatology, University of Electronic Science and Technology of China Hospital, Chengdu, Sichuan, China
| | - J Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Curtin University, Perth, WA, Australia
| | - W C Wu
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Y F Wu
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - L Zhao
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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Dai D, Xiong W, Fan Q, Wang H, Chen Q, Shen W, Zhang R, Ding F, Lu L, Tao R. Association of decreased serum sTREM-1 level with the severity of coronary artery disease: Inhibitory effect of sTREM-1 on TNF-α- and oxLDL-induced inflammatory reactions in endothelial cells. Medicine (Baltimore) 2016; 95:e4693. [PMID: 27631216 PMCID: PMC5402559 DOI: 10.1097/md.0000000000004693] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Soluble triggering receptor expressed on myeloid cells 1 (sTREM-1) is closely involved in autoimmune diseases and inflammatory reactions. We aimed to investigate whether serum sTREM-1 is related to coronary artery disease (CAD) and to evaluate the biological effects of sTREM-1 in cell experiments.This cross-sectional study included 263 consecutive patients with angiographically documented CAD, who were admitted for diagnosis and interventional treatment of CAD (CAD group), with 162 participants without CAD serving as controls (control group). Serum levels of sTREM-1 and high sensitivity C reactive protein (hsCRP) were determined in all participants. In cell experiments, the influence of sTREM-1 on tumor necrosis factor-α (TNF-α)- or oxidized low-density lipoprotein (oxLDL)-induced inflammatory reactions was evaluated in human umbilical vein endothelial cells (HUVECs).Serum level of sTREM-1 was significantly lower in CAD patients than in controls (P < 0.001). sTREM-1 values were related to the number of diseased coronary arteries (Spearman r = -0.413, P < 0.001) and the severity represented by Gensini score (Pearson r = -0.336, P < 0.001). Multivariable logistic regression analysis revealed that decreased sTREM-1 were independent determinants of CAD (OR = 0.428, P < 0.001). In cell experiments, recombinant sTREM-1 protein concentration-dependently inhibited the expression of IL-1β, IL-6, TNF-α, VCAM-1, and ICAM-1 induced by TNF-α or oxLDL in HUVECs.This study demonstrates that decreased serum sTREM-1 level is significantly associated with the presence and severity of CAD. sTREM-1 restrains inflammatory reaction in endothelial cells, suggesting that it might be a potential vascular protective factor.
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Affiliation(s)
| | | | - Qin Fan
- Department of Cardiology, Rui Jin Hospital
| | - Haibo Wang
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Qiujing Chen
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | | | | | | | - Lin Lu
- Department of Cardiology, Rui Jin Hospital
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
- Correspondence: Rong Tao, Lin Lu, Department of Cardiology, Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China (e-mail: , )
| | - Rong Tao
- Department of Cardiology, Rui Jin Hospital
- Correspondence: Rong Tao, Lin Lu, Department of Cardiology, Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China (e-mail: , )
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Attenuated viral hepatitis in Trem1-/- mice is associated with reduced inflammatory activity of neutrophils. Sci Rep 2016; 6:28556. [PMID: 27328755 PMCID: PMC4916511 DOI: 10.1038/srep28556] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 05/20/2016] [Indexed: 12/22/2022] Open
Abstract
TREM1 (Triggering Receptor Expressed on Myeloid Cells 1) is a pro-inflammatory receptor expressed by phagocytes, which can also be released as a soluble molecule (sTREM1). The roles of TREM1 and sTREM1 in liver infection and inflammation are not clear. Here we show that patients with hepatitis B virus (HBV) or hepatitis C virus (HCV) infection manifest elevated serum levels of sTREM1. In mice, experimental viral hepatitis induced by infection with Lymphocytic Choriomeningitis Virus (LCMV)-WE was likewise associated with increased sTREM1 in serum and urine, and with increased TREM1 and its associated adapter molecule DAP12 in the liver. Trem1−/− mice showed accelerated clearance of LCMV-WE and manifested attenuated liver inflammation and injury. TREM1 expression in the liver of wild-type mice was mostly confined to infiltrating neutrophils, which responded to LCMV by secretion of CCL2 and TNF-α, and release of sTREM1. Accordingly, the production of CCL2 and TNF-α was decreased in the livers of LCMV-infected Trem1−/− mice, as compared to LCMV-infected wildtype mice. These findings indicate that TREM1 plays a role in viral hepatitis, in which it seems to aggravate the immunopathology associated with viral clearance, mainly by increasing the inflammatory activity of neutrophils.
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Abdel-Aziz H, Schneider M, Neuhuber W, Meguid Kassem A, Khailah S, Müller J, Gamal Eldeen H, Khairy A, T Khayyal M, Shcherbakova A, Efferth T, Ulrich-Merzenich G. GPR84 and TREM-1 Signaling Contribute to the Pathogenesis of Reflux Esophagitis. Mol Med 2016; 21:1011-1024. [PMID: 26650186 DOI: 10.2119/molmed.2015.00098] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 11/23/2015] [Indexed: 01/01/2023] Open
Abstract
Gastro-esophageal reflux disease (GERD) is one of the most common disorders in gastroenterology. Patients present with or without increased acid exposure indicating a nonuniform etiology. Thus, the common treatment with proton pump inhibitors (PPIs) fails to control symptoms in up to 40% of patients. To further elucidate the pathophysiology of the condition and explore new treatment targets, transcriptomics, proteomics and histological methods were applied to a surgically induced subchronic reflux esophagitis model in Wistar rats after treatment with either omeprazole (PPI) or STW5, a herbal preparation shown to ameliorate esophagitis without affecting refluxate pH. The normal human esophageal squamous cell line HET-1A and human endoscopic biopsies were used to confirm our findings to the G-protein-coupled receptor (GPR) 84 in human tissue. Both treatments reduced reflux-induced macroscopic and microscopic lesions of the esophagi as well as known proinflammatory cytokines. Proteomic and transcriptomic analyses identified CINC1-3, MIP-1/3α, MIG, RANTES and interleukin (IL)-1β as prominent mediators in GERD. Most regulated cyto-/chemokines are linked to the TREM-1 signaling pathway. The fatty acid receptor GPR84 was upregulated in esophagitis but significantly decreased in treated groups, a finding supported by Western blot and immunohistochemistry in both rat tissue and HET-1A cells. GPR84 was also found to be significantly upregulated in patients with grade B reflux esophagitis. The expression of GPR84 in esophageal tissue and its potential involvement in GERD are reported for the first time. IL-8 (CINC1-3) and the TREM-1 signaling pathway are proposed, besides GPR84, to play an important role in the pathogenesis of GERD.org.
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Affiliation(s)
- Heba Abdel-Aziz
- Department of Pharmacology, Institute of Pharmaceutical Chemistry, Westfalian Wilhelms University, Münster, Germany
| | - Mathias Schneider
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany
| | - Winfried Neuhuber
- Institute of Anatomy, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Abdel Meguid Kassem
- Tropical Medicine Department and Gastrointestinal Endoscopy Unit, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Saleem Khailah
- Tropical Medicine Department and Gastrointestinal Endoscopy Unit, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Jürgen Müller
- Scientific Department, Steigerwald Arzneimittelwerk GmbH, Darmstadt, Germany
| | - Hadeel Gamal Eldeen
- Tropical Medicine Department and Gastrointestinal Endoscopy Unit, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Ahmed Khairy
- Tropical Medicine Department and Gastrointestinal Endoscopy Unit, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Mohamed T Khayyal
- Department of Pharmacology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Anastasiia Shcherbakova
- Medical Clinic III, University Clinic Centre, Rheinische Friedrich-Wilhelms University, Bonn, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany
| | - Gudrun Ulrich-Merzenich
- Medical Clinic III, University Clinic Centre, Rheinische Friedrich-Wilhelms University, Bonn, Germany
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TREM-1, a negative regulator of human osteoclastogenesis. Immunol Lett 2016; 171:50-9. [DOI: 10.1016/j.imlet.2016.02.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/16/2016] [Accepted: 02/02/2016] [Indexed: 11/23/2022]
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Dou ZF, Guo YR, Liu JC, Li N, Chai B, Li XQ, Fu R, Wang XJ. Ameliorative effects of glycine in an experimental nonalcoholic steatohepatitis and its correlation between TREM-1 and TREM-2. Am J Transl Res 2016; 8:284-297. [PMID: 27158326 PMCID: PMC4846883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 01/05/2016] [Indexed: 06/05/2023]
Abstract
Inflammation plays an important role in Nonalcoholic Steatohepatitis (NASH), triggering receptor expressed on myeloid cells-1 and 2 (TREM-1 and TREM-2) modulates inflammatory and innate immune, they have been investigated in various inflammatory diseases, but not in NASH. Meanwhile we added glycine in HFO (HFOG) to investigate if the liver pathologic relief is related with TREM-1 and TREM-2. Liver tissue staining and serum indexes showed that the NASH was successful from the 4(th) weekend and glycine can improved many features of NASH. Results from Q-PCR and ELISA study showed that compareaded with control, TREM-1 is upregulated and TREM-2 is downregulated respectively in 4 and 8-week NASH model (TREM-1: p < 0.001; TREM-2: p < 0.001).Compared with HFO group, HFOG group with an extra 5% Glycine into the diet of NASH, we found that all model liver pathologic and serum indexes ameliorated in this group. Furthermore, Results from Q-PCR and ELISA study showed that compareaded with HFO group, TREM-2 of this group is upregulated and TREM-1 is downregulated respectively from the 4(th) weekend, which is more significant at the 8(th) weekend (TREM-1: p <0.001; TREM-2: p =0.048). Pearson correlation showed that TREM-1 and TREM-2 were closely associated with serum ET, TNF-α, TLR-4 and PC III. Besides, using multiple-stepwise regression analysis, we found that the ameliorative effects of glycine in HFOG was mainly related to its counteraction of PC III, TREM-1 and upregulation of TREM-2. Furthermore, we detected the expression of TREM-1 and TREM-2 in gall stone patients without drinking excessively before undergoing cholecystectomy, and found that the rise of TREM-1 and reduction of TREM-2 was close associated with the severity of fatty liver. To conclude, our results support the concept that TREM-1 and TREM-2 were close strongly linked to NASH and NALFD. Glycine can relieve NASH by its anti-fibrosis effect, and this ameliorative effect is related to the expression change of TREM-1/2 to some extent.
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Affiliation(s)
- Zhang-Feng Dou
- Department of Gastroenterology, First hospital of Shanxi Medical UniversityTaiyuan, Shanxi Province, China
| | - Ya-Rong Guo
- Department of Gastroenterology, First hospital of Shanxi Medical UniversityTaiyuan, Shanxi Province, China
| | - Jin-Chun Liu
- Department of Gastroenterology, First hospital of Shanxi Medical UniversityTaiyuan, Shanxi Province, China
| | - Ning Li
- Department of Gastroenterology, First hospital of Shanxi Medical UniversityTaiyuan, Shanxi Province, China
| | - Bao Chai
- Department of Gastroenterology, Shanxi Academy of Medical Science, Shanxi DaYi HospitalTaiyuan, Shanxi Province, China
| | - Xiu-Qing Li
- Department of Gastroenterology, First hospital of Shanxi Medical UniversityTaiyuan, Shanxi Province, China
| | - Rong Fu
- The Shanxi Key Laboratory of Otorhinolaryngology Head and Neck CancerTaiyuan, Shanxi Province, China
| | - Xiao-Juan Wang
- Department of Gastroenterology, Taiyuan Municipal People’s HospitalTaiyuan, Shanxi Province, China
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Osteoimmunology: Major and Costimulatory Pathway Expression Associated with Chronic Inflammatory Induced Bone Loss. J Immunol Res 2015; 2015:281287. [PMID: 26064999 PMCID: PMC4433696 DOI: 10.1155/2015/281287] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 12/10/2014] [Indexed: 12/28/2022] Open
Abstract
The field of osteoimmunology has emerged in response to the range of evidences demonstrating the close interrelationship between the immune system and bone metabolism. This is pertinent to immune-mediated diseases, such as rheumatoid arthritis and periodontal disease, where there are chronic inflammation and local bone erosion. Periprosthetic osteolysis is another example of chronic inflammation with associated osteolysis. This may also involve immune mediation when occurring in a patient with rheumatoid arthritis (RA). Similarities in the regulation and mechanisms of bone loss are likely to be related to the inflammatory cytokines expressed in these diseases. This review highlights the role of immune-related factors influencing bone loss particularly in diseases of chronic inflammation where there is associated localized bone loss. The importance of the balance of the RANKL-RANK-OPG axis is discussed as well as the more recently appreciated role that receptors and adaptor proteins involved in the immunoreceptor tyrosine-based activation motif (ITAM) signaling pathway play. Although animal models are briefly discussed, the focus of this review is on the expression of ITAM associated molecules in relation to inflammation induced localized bone loss in RA, chronic periodontitis, and periprosthetic osteolysis, with an emphasis on the soluble and membrane bound factor osteoclast-associated receptor (OSCAR).
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Gawish R, Martins R, Böhm B, Wimberger T, Sharif O, Lakovits K, Schmidt M, Knapp S. Triggering receptor expressed on myeloid cells-2 fine-tunes inflammatory responses in murine Gram-negative sepsis. FASEB J 2014; 29:1247-57. [PMID: 25477281 DOI: 10.1096/fj.14-260067] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 11/13/2014] [Indexed: 12/18/2022]
Abstract
During infections, TLR-mediated responses require tight regulation to allow for pathogen removal, while preventing overwhelming inflammation and immunopathology. The triggering receptor expressed on myeloid cells (TREM)-2 negatively regulates inflammation by macrophages and impacts on phagocytosis, but the function of endogenous TREM-2 during infections is poorly understood. We investigated TREM-2's role in regulating TLR4-mediated inflammation by studying wild-type and TREM-2(-/-) mice challenged with LPS and found TREM-2 to dampen early inflammation. Augmented early inflammation in TREM-2(-/-) animals was followed by an accelerated resolution and ultimately improved survival, associated with the induction of the negative regulator A20. Upon infection with Escherichia coli, the otherwise beneficial effect of an exaggerated early immune response in TREM-2(-/-) animals was counteracted by a 50% reduction in bacterial phagocytosis. In line with this, TREM-2(-/-) peritoneal macrophages (PMs) exhibited augmented inflammation following TLR4 stimulation, demonstrating the presence and negative regulatory functionality of TREM-2 on primary PMs. Significantly, we identified a high turnover rate because TREM-2 RNA is 25-fold down-regulated and the protein proteasomally degraded upon LPS encounter, thus ensuring a tightly regulated and versatile system that modulates inflammation. Our results illustrate TREM-2's effects on infection-triggered inflammation and identify TREM-2 as a potential target to prevent overwhelming inflammation while preserving antibacterial-effector functions.
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Affiliation(s)
- Riem Gawish
- *Ce-M-M-, Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria; and National Food Institute, Division for Epidemiology and Microbial Genomics, Technical University of Denmark, Lyngby, Denmark
| | - Rui Martins
- *Ce-M-M-, Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria; and National Food Institute, Division for Epidemiology and Microbial Genomics, Technical University of Denmark, Lyngby, Denmark
| | - Benedikta Böhm
- *Ce-M-M-, Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria; and National Food Institute, Division for Epidemiology and Microbial Genomics, Technical University of Denmark, Lyngby, Denmark
| | - Terje Wimberger
- *Ce-M-M-, Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria; and National Food Institute, Division for Epidemiology and Microbial Genomics, Technical University of Denmark, Lyngby, Denmark
| | - Omar Sharif
- *Ce-M-M-, Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria; and National Food Institute, Division for Epidemiology and Microbial Genomics, Technical University of Denmark, Lyngby, Denmark
| | - Karin Lakovits
- *Ce-M-M-, Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria; and National Food Institute, Division for Epidemiology and Microbial Genomics, Technical University of Denmark, Lyngby, Denmark
| | - Mariane Schmidt
- *Ce-M-M-, Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria; and National Food Institute, Division for Epidemiology and Microbial Genomics, Technical University of Denmark, Lyngby, Denmark
| | - Sylvia Knapp
- *Ce-M-M-, Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria; and National Food Institute, Division for Epidemiology and Microbial Genomics, Technical University of Denmark, Lyngby, Denmark
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Duan M, Wang ZC, Wang XY, Shi JY, Yang LX, Ding ZB, Gao Q, Zhou J, Fan J. TREM-1, an inflammatory modulator, is expressed in hepatocellular carcinoma cells and significantly promotes tumor progression. Ann Surg Oncol 2014; 22:3121-9. [PMID: 25465376 DOI: 10.1245/s10434-014-4191-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND Triggering receptors expressed on myeloid cells 1 (TREM-1) is a novel molecule that modulates inflammatory responses. Hepatocellular carcinoma (HCC) is a well-known type of inflammation-related cancer. However, TREM-1 expression and its direct effects on HCC cells have not been previously determined. METHODS Western blotting, quantitative reverse transcription-PCR (qRT-PCR), and immunofluorescence were used to detect TREM-1 expression. TREM-1 upregulation by pcDNA (mammalian expression vector with the CMV promoter) and its downregulation by shRNA (short hairpin RNA) were used to determine the function of this molecule. Transwell, CCK-8, cell cycle, and apoptosis assays were used to detect the effects of TREM-1 on HCC cells. Immunohistochemical staining of samples from a cohort of 322 HCC patients was used to determine the prognostic value of TREM-1. RESULTS TREM-1 investigation through Western blot, qRT-PCR, and immunofluorescence analyses revealed that TREM-1 was expressed in HCC cells and tumor tissues. Functional experiments suggested that TREM-1 significantly promoted proliferation, invasion, and inhibited apoptosis of HCC cells. Inflammatory cytokine profiles under TREM-1 up- or downregulation indicated the majority of proinflammation cytokines significantly and positively correlated with TREM-1 expression, including IL-1β, TNF-α, and MCP-1. Western blot analyses revealed that p65, STAT3, ERK, and AKT might be the downstream effectors of TREM-1 signal transduction. High TREM-1 expression correlated significantly with increased recurrence and poorer survival in HCC patients, and it was an independent prognostic factor for recurrence (P = 0.009). CONCLUSIONS TREM-1 was found to be expressed in HCC cells and to be a prognostic factor for the clinical outcome of HCC.
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Affiliation(s)
- Meng Duan
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
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Roe K, Gibot S, Verma S. Triggering receptor expressed on myeloid cells-1 (TREM-1): a new player in antiviral immunity? Front Microbiol 2014; 5:627. [PMID: 25505454 PMCID: PMC4244588 DOI: 10.3389/fmicb.2014.00627] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 11/03/2014] [Indexed: 11/25/2022] Open
Abstract
The triggering receptor expressed on myeloid cells (TREM) family of protein receptors is rapidly emerging as a critical regulator of a diverse array of cellular functions, including amplification of inflammation. Although the ligand(s) for TREM have not yet been fully identified, circumstantial evidence indicates that danger- and pathogen-associated molecular patterns (DAMPs and PAMPs) can induce cytokine production via TREM-1 activation. The discovery of novel functions of TREM, such as regulation of T-cell proliferation and activation of antigen-presenting cells, suggests a larger role of TREM proteins in modulation of host immune responses to microbial pathogens, such as bacteria and fungi. However, the significance of TREM signaling in innate immunity to virus infections and the underlying mechanisms remain largely unclear. The nature and intensity of innate immune responses, specifically production of type I interferon and inflammatory cytokines is a crucial event in dictating recovery vs. adverse outcomes from virus infections. In this review, we highlight the emerging roles of TREM-1, including synergy with classical pathogen recognition receptors. Based on the literature using viral PAMPs and other infectious disease models, we further discuss how TREM-1 may influence host-virus interactions and viral pathogenesis. A deeper conceptual understanding of the mechanisms associated with pathogenic and/or protective functions of TREM-1 in antiviral immunity is essential to develop novel therapeutic strategies for the control of virus infection by modulating innate immune signaling.
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Affiliation(s)
- Kelsey Roe
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa Honolulu, HI, USA
| | - Sébastien Gibot
- Service de Réanimation Médicale, University Hospital of Nancy Nancy, France
| | - Saguna Verma
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa Honolulu, HI, USA
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Pelham CJ, Pandya AN, Agrawal DK. Triggering receptor expressed on myeloid cells receptor family modulators: a patent review. Expert Opin Ther Pat 2014; 24:1383-95. [PMID: 25363248 DOI: 10.1517/13543776.2014.977865] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Triggering receptor expressed on myeloid cells (TREM) receptors and TREM-like transcript (TLT; or TREML) receptors of the immunoglobulin superfamily are known as key modulators of host immune responses. TREM-1 (CD354) and TREM-2 share the transmembrane adaptor DNAX-activation protein of 12 kDa (DAP12), but they possess separate stimulatory and inhibitory functional roles, especially in myeloid cells. AREAS COVERED This review covers findings related to TREMs and TLTs published in patent applications from their discovery in 2000 to the present. New roles for TREM-1, TREM-2, TLT-1 and TLT-2 in maladies ranging from acute and chronic inflammatory disorders to cardiovascular diseases and cancers are discussed. Putative endogenous ligands and novel synthetic peptide blockers are also discussed. EXPERT OPINION So far, therapeutic use of activators/blockers specific for TREMs and TLTs has been limited to preclinical animal models. TREM-1 is an immediate therapeutic target for acute and chronic inflammatory conditions, especially sepsis. Certain mutations in DAP12 and TREM-2 manifest into a disorder named polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy, and newly identified TREM-2 variants confer a significant increase in risk of developing Alzheimer's disease. This makes TREM-2 an attractive therapeutic target for neurodegenerative diseases.
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Affiliation(s)
- Christopher J Pelham
- Creighton University School of Medicine, Department of Biomedical Sciences and Center for Clinical & Translational Science , Omaha, NE 68178 , USA
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48
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Genua M, Rutella S, Correale C, Danese S. The triggering receptor expressed on myeloid cells (TREM) in inflammatory bowel disease pathogenesis. J Transl Med 2014; 12:293. [PMID: 25347935 PMCID: PMC4231187 DOI: 10.1186/s12967-014-0293-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 10/09/2014] [Indexed: 01/29/2023] Open
Abstract
The Triggering Receptors Expressed on Myeloid cells (TREM) are a family of cell-surface molecules that control inflammation, bone homeostasis, neurological development and blood coagulation. TREM-1 and TREM-2, the best-characterized receptors so far, play divergent roles in several infectious diseases. In the intestine, TREM-1 is highly expressed by macrophages, contributing to inflammatory bowel disease (IBD) pathogenesis. Contrary to current understanding, TREM-2 also promotes inflammation in IBD by fueling dendritic cell functions. This review will focus specifically on recent insights into the role of TREM proteins in IBD development, and discuss opportunities for novel treatment approaches.
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Affiliation(s)
- Marco Genua
- IBD Center, Humanitas Clinical and Research Hospital, Rozzano, Italy.
| | - Sergio Rutella
- Division of Translational Medicine, Research Branch, Sidra Medical & Research Center, Doha, Qatar.
| | - Carmen Correale
- IBD Center, Humanitas Clinical and Research Hospital, Rozzano, Italy.
| | - Silvio Danese
- IBD Center, Humanitas Clinical and Research Hospital, Rozzano, Italy.
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Li WW, Tang GD, Liang ZH, Zhan Y, Fang CY. Role of triggering receptor expressed on myeloid cells-1 in liver injury in rats with acute necrotizing pancreatitis. Shijie Huaren Xiaohua Zazhi 2014; 22:4223-4230. [DOI: 10.11569/wcjd.v22.i28.4223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the expression of triggering receptor expressed on myeloid cells-1 (TREM-1) in liver injury with acute necrotizing pancreatitis (ANP) and to explore the correlation between TREM-1 expression and liver injury in rats with ANP.
METHODS: Forty-eight male Sprague-Dawley rats were randomly divided into two groups: a control group and an ANP group. ANP was induced by retrograde injection of 5% sodium taurocholate into the biliary pancreatic duct. Rats were sacrificed at 3, 6, 12 and 24 h after treatment. Serum amylase (AMY), alanine aminotransferase (ALT), aspartate aminotransferase (AST), sTREM-1 and interleukin-1β (IL-1β) were measured. The pathologic changes of the pancreatic and hepatic tissues were observed and graded under a microscope. The expression of TREM-1 mRNA in the liver was detected by real-time quantitative (qRT) PCR.
RESULTS: The levels of serum amylase, sTREM-1 and IL-1β began to increase at 3 h after sodium taurocholate injection, and were then maintained at high levels at all subsequent time points, significantly higher than those in the control group (P < 0.05). The level of sTREM-1 in the ANP group was correlated with Schmidt score (r = 0.481, P < 0.05). Serum ALT and AST concentrations at 6, 12 and 24 h, the pathologic scores of pancreatic and liver tissues, and the expression of TREM-1 mRNA (3 h: 1.96 ± 0.63 vs 0.94 ± 0.23; 6 h: 4.46 ± 1.42 vs 0.95 ± 0.24; 12 h: 2.59 ± 1.14 vs 1.10 ± 0.33; 24 h: 2.56 ± 1.08 vs 0.85 ± 0.27) in the liver were significantly higher in the ANP group than in the control group (P < 0.05 for all).
CONCLUSION: The expression of TREM-1 mRNA in liver tissue and the level of serum sTREM-1 increase significantly in rats with ANP, suggesting that TREM-1 may play an important role in ANP with liver injury.
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Sato T, Yamano Y, Tomaru U, Shimizu Y, Ando H, Okazaki T, Nagafuchi H, Shimizu J, Ozaki S, Miyazawa T, Yudoh K, Oka H, Suzuki N. Serum level of soluble triggering receptor expressed on myeloid cells-1 as a biomarker of disease activity in relapsing polychondritis. Mod Rheumatol 2014; 24:129-36. [PMID: 24261769 DOI: 10.3109/14397595.2013.852854] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES We aimed to identify a serum biomarker for evaluating the disease activity of relapsing polychondritis (RP). METHODS We measured and compared serum levels of 28 biomarkers potentially associated with this disease, including soluble triggering receptor expressed on myeloid cells-1 (sTREM-1), high-sensitivity C-reactive protein (hs-CRP), and cartilage oligomeric matrix protein (COMP), in 15 RP patients and 16 healthy donors (HDs). We divided the 15 RP patients into active RP (n = 8) and inactive RP (n = 7) groups, depending on the extent of the disease, and compared candidate markers between groups. The localization of membrane-bound TREM-1 in the affected tissue was examined by immunohistochemistry. RESULTS Serum levels of sTREM-1, interferon-γ, chemokine (C-C motif) ligand 4, vascular endothelial growth factor, and matrix metalloproteinases-3 were significantly higher in RP patients than HDs. Among these markers, sTREM-1 had the highest sensitivity and specificity (86.7 and 86.7 %, respectively). Furthermore, the serum level of sTREM-1 was significantly higher in active RP patients than inactive RP patients (p = 0.0403), but this was not true for hs-CRP or COMP. TREM-1 was expressed on endothelial cells in RP lesions. CONCLUSIONS The serum level of sTREM-1 may be a useful marker of disease activity in RP.
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Affiliation(s)
- Tomoo Sato
- Institute of Medical Science, St. Marianna University School of Medicine , 2-16-1 Sugao, Miyamae-ku, Kawasaki 216-8512 , Japan
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