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Liu F, Schrack JA, Walston J, Mathias RA, Windham BG, Grams ME, Coresh J, Walker KA. Mid-life plasma proteins associated with late-life prefrailty and frailty: a proteomic analysis. GeroScience 2024; 46:5247-5265. [PMID: 38856871 PMCID: PMC11336072 DOI: 10.1007/s11357-024-01219-8] [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: 03/25/2024] [Accepted: 05/21/2024] [Indexed: 06/11/2024] Open
Abstract
Physical frailty is a syndrome that typically manifests in later life, although the pathogenic process causing physical frailty likely begins decades earlier. To date, few studies have examined the biological signatures in mid-life associated with physical frailty later in life. Among 4,189 middle-aged participants (57.8 ± 5.0 years, 55.8% women) from the Atherosclerosis Risk in Community (ARIC) study, we evaluated the associations of 4,955 plasma proteins (log 2-transformed and standardized) measured using the SomaScan platform with their frailty status approximately 20 years later. Using multinomial logistic regression models adjusting for demographics, health behaviors, kidney function, total cholesterol, and comorbidities, 12 and 221 proteins were associated with prefrailty and frailty in later life, respectively (FDR p < 0.05). Top frailty-associated proteins included neurocan core protein (NCAN, OR = 0.66), fatty acid-binding protein heart (FABP3, OR = 1.62) and adipocyte (FABP4, OR = 1.65), as well proteins involved in the contactin-1 (CNTN1), toll-like receptor 5 (TLR5), and neurogenic locus notch homolog protein 1 (NOTCH1) signaling pathway relevant to skeletal muscle regeneration, myelination, and inflammation. Pathway analyses suggest midlife dysregulation of inflammation, metabolism, extracellular matrix, angiogenesis, and lysosomal autophagy among those at risk for late-life frailty. After further adjusting for midlife body mass index (BMI) - an established frailty risk factor - only CNTN1 (OR = 0.75) remained significantly associated with frailty. Post-hoc analyses demonstrated that the top 41 midlife frailty-associated proteins mediate 32% of the association between mid-life BMI and late-life frailty. Our findings provide new insights into frailty etiology earlier in the life course, enhancing the potential for prevention.
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Affiliation(s)
- Fangyu Liu
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
| | - Jennifer A Schrack
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Center On Aging and Health, Johns Hopkins University, Baltimore, MD, USA
| | - Jeremy Walston
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Rasika A Mathias
- Genomics and Precision Health Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infection Disease, Bethesda, MD, USA
| | - B Gwen Windham
- Department of Medicine, MIND Center, University of Mississippi Medical Center, Jackson, MS, USA
| | - Morgan E Grams
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Division of Precision Medicine, New York University Grossman School of Medicine, New York, NY, USA
| | - Josef Coresh
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Population Health and Medicine, Optimal Aging Institute, New York University Grossman School of Medicine, New York, NY, USA
| | - Keenan A Walker
- Laboratory of Behavioral Neuroscience, National Institute On Aging, Baltimore, MD, USA
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Zhao T, Zhou Y, Zhang D, Han D, Ma J, Li S, Li T, Hu S, Li Z. Inhibition of TREM-1 alleviates neuroinflammation by modulating microglial polarization via SYK/p38MAPK signaling pathway after traumatic brain injury. Brain Res 2024; 1834:148907. [PMID: 38570153 DOI: 10.1016/j.brainres.2024.148907] [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: 01/25/2024] [Revised: 03/24/2024] [Accepted: 03/31/2024] [Indexed: 04/05/2024]
Abstract
BACKGROUND Traumatic brain injury (TBI), as a major public health problem, is characterized by high incidence rate, disability rate, and mortality rate. Neuroinflammation plays a crucial role in the pathogenesis of TBI. Triggering receptor expressed on myeloid cells-1 (TREM-1) is recognized as an amplifier of the inflammation in diseases of the central nervous system (CNS). However, the function of TREM-1 remains unclear post-TBI. This study aimed to investigate the function of TREM-1 in neuroinflammation induced by TBI. METHODS Brain water content (BWC), modified neurological severity score (mNSS), and Morris Water Maze (MWM) were measured to evaluate the effect of TREM-1 inhibition on nervous system function and outcome after TBI. TREM-1 expression in vivo was evaluated by Western blotting. The cellular localization of TREM-1 in the damaged region was observed via immunofluorescence staining. We also conducted Western blotting to examine expression of SYK, p-SYK and other downstream proteins. RESULTS We found that inhibition of TREM-1 reduced brain edema, decreased mNSS and improved neurobehavioral outcomes after TBI. It was further determined that TREM-1 was expressed on microglia and modulated subtype transition of microglia. Inhibition of TREM-1 alleviated neuroinflammation, which was associated with SYK/p38MAPK signaling pathway. CONCLUSIONS These findings suggest that TREM-1 can be a potential clinical therapeutic target for alleviating neuroinflammation after TBI.
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Affiliation(s)
- Tianqi Zhao
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China
| | - Yuxin Zhou
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China
| | - Dabing Zhang
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China
| | - Dong Han
- Laboratory of Emergency Medicine, Second Clinical Medical College of Xuzhou Medical University, Xuzhou, Jiangsu, China; Xuzhou Key Laboratory of Emergency Medicine, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Jingyuan Ma
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China
| | - Shanshan Li
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China
| | - Ting Li
- Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China; School of Life Sciences, Xuzhou Medical University, Xuzhou, Jiangsu, China.
| | - Shuqun Hu
- Laboratory of Emergency Medicine, Second Clinical Medical College of Xuzhou Medical University, Xuzhou, Jiangsu, China; Xuzhou Key Laboratory of Emergency Medicine, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China.
| | - Zhouru Li
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China.
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Ertel MV, da Silva ABA, de Sousa DF, Dos Santos CJ, da Silva TM, da Silva-Sales MFM, de Oliveira Matos A, Sales-Campos H. Who is who within the universe of TREM-like transcripts (TREML)? Life Sci 2024; 348:122696. [PMID: 38710279 DOI: 10.1016/j.lfs.2024.122696] [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: 11/16/2023] [Revised: 04/29/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024]
Abstract
The Triggering Receptor Expressed on Myeloid Cells (TREM) family of receptors plays a crucial role in the immune response across various species. Particularly, TREM-1 and TREM-2 have been extensively studied, both in terms of their applications and their expression sites and signaling pathways. However, the same is not observed for the other family members collectively known as TREM-like-transcripts (TREML). The TREML family consists of eight receptors, with TREML1-5 identified in humans and mice, TREML-6 exclusive found in mice, TREML-7 in dogs and horses, and TREML-8 in rabbits and opossums. Despite the limited data available on the TREML members, they have been implicated in different immune and non-immune activities, which have been proposed to display both pro and anti-inflammatory activities, and to influence fundamental biological processes such as coagulation, bone and neurological development. In this review, we have compiled available information regarding the already discovered members of the family and provided foundational framework for understanding the function, localization, and therapeutic potential of all TREML members. Additionally, we hope that this review may shed light on this family of receptors, whose underlying mechanisms are still awaiting elucidation, while emphasizing the need for future studies to explore their functions and potential therapeutic application.
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Affiliation(s)
- Márcia Verônica Ertel
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
| | | | - Daniel Francisco de Sousa
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
| | - Cairo José Dos Santos
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
| | - Tatiane Mendonça da Silva
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
| | | | - Amanda de Oliveira Matos
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
| | - Helioswilton Sales-Campos
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
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Li C, Cai C, Xu D, Chen X, Song J. TREM1: Activation, signaling, cancer and therapy. Pharmacol Res 2024; 204:107212. [PMID: 38749377 DOI: 10.1016/j.phrs.2024.107212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/12/2024] [Accepted: 05/09/2024] [Indexed: 06/01/2024]
Abstract
Triggering receptor expressed on myeloid cells 1 (TREM1) is a cell surface receptor expressed on neutrophils, monocytes and some tissue macrophages, where it functions as an immunoregulator that controls myeloid cell responses. The activation of TREM1 is suggested to be an upregulation-based, ligands-induced and structural multimerization-mediated process, in which damage- and pathogen-associated molecular patterns play important roles. Activated TREM1 initiates an array of downstream signaling pathways that ultimately result in the production of pro-inflammatory cytokines and chemokines, whereby it functions as an amplifier of inflammation and is implicated in the pathogenesis of many inflammation-associated diseases. Over the past decade, there has been growing evidence for the involvement of TREM1 overactivation in tumor stroma inflammation and cancer progression. Indeed, it was shown that TREM1 promotes tumor progression, immunosuppression, and resistance to therapy by activating tumor-infiltrating myeloid cells. TREM1-deficiency or blockade provide protection against tumors and reverse the resistance to anti-PD-1/PD-L1 therapy and arginine-deprivation therapy in preclinical models. Here, we first review the structure, activation modes and signaling pathways of TREM1 and emphasize the role of soluble TREM1 as a biomarker of infection and cancer. We then focus on the role of TREM1 in cancer and systematically summarize its expression patterns, upregulation mechanisms and functions in tumor development and progression. Lastly, we discuss the therapeutic prospects of TREM1 inhibition, via effective pharmacological inhibitors, in treating cancer and other diseases.
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Affiliation(s)
- Chenyang Li
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; Clinical Medicine Research Centre for Hepatic Surgery of Hubei Province, Wuhan, Hubei 430030, China; Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, Hubei 430030, China
| | - Chujun Cai
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; Key Laboratory of Cancer Invasion and Metastasis(Ministry of Education), Hubei Key Laboratory of Tumor Invasion and Metastasis, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Dafeng Xu
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; Clinical Medicine Research Centre for Hepatic Surgery of Hubei Province, Wuhan, Hubei 430030, China; Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, Hubei 430030, China
| | - Xiaoping Chen
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; Clinical Medicine Research Centre for Hepatic Surgery of Hubei Province, Wuhan, Hubei 430030, China; Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, Hubei 430030, China; Key Laboratory of Organ Transplantation, Ministry of Education, Wuhan, Hubei 430030, China; Key Laboratory of Organ Transplantation, National Health Commission, Wuhan, Hubei 430030, China; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, Hubei 430030, China.
| | - Jia Song
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; Clinical Medicine Research Centre for Hepatic Surgery of Hubei Province, Wuhan, Hubei 430030, China; Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, Hubei 430030, China.
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Mejia-Garcia A, Fernandez GJ, Echeverri LF, Balcazar N, Acin S. RNA-seq analysis reveals modulation of inflammatory pathways by an enriched-triterpene natural extract in mouse and human macrophage cell lines. Heliyon 2024; 10:e24382. [PMID: 38293365 PMCID: PMC10826738 DOI: 10.1016/j.heliyon.2024.e24382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/08/2024] [Accepted: 01/08/2024] [Indexed: 02/01/2024] Open
Abstract
Chronic inflammation is crucial in developing insulin resistance and type 2 diabetes. Previous studies have shown that a leaf extract of Eucalyptus tereticornis, with ursolic acid (UA), oleanolic acid (OA), and ursolic acid lactone (UAL) as the main molecules (78 %) mixed with unknown minor metabolites (22 %), provided superior anti-inflammatory, hypoglycemic, and hypolipidemic effects than reconstituted triterpenoid mixtures in macrophage cell lines and a pre-diabetic mouse model. Further identification of the molecular mechanisms of action of this mixture of triterpenes is required. This study aims to analyse the RNA expression profiles of mouse and human macrophage cell lines treated with the natural extract and its components. Activated macrophage cell lines were treated with the natural extract, UA, OA, UAL or a triterpene mixture (M1). RNA was extracted and sequenced using the DNBseq platform and the EnrichR software to perform gene enrichment analysis using the Gene Ontology database, Kyoto Encyclopedia of Genes and Genomes, and Reactome. To conduct clustering analysis, we standardised the normalised counts of each gene and applied k-means clustering. The combination of molecules in the natural extract has an additive or synergic effect that affects the expression of up-regulated genes by macrophage activation. Triterpenes (M1) regulated 76 % of human and 68 % of mouse genes, while uncharacterised minority molecules could regulate 24 % of human and 32 % of mouse genes. The extract inhibited the expression of many cytokines (IL6, IL1, OSM), chemokines (CXCL3), inflammatory mediators (MMP8 and MMP13) and the JAK-STAT signalling pathway in both models. The natural extract has a more powerful immunomodulatory effect than the triterpene mixture, increasing the number of genes regulated in mouse and human models. Our study shows that Eucalyptus tereticornis extract is a promising option for breaking the link between inflammation and insulin resistance.
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Affiliation(s)
- Alejandro Mejia-Garcia
- Grupo Genmol. Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Geysson Javier Fernandez
- Grupo Genmol. Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, Colombia
- Grupo Biología y Control de Enfermedades Infecciosas, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Luis Fernando Echeverri
- Grupo QOPN, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Norman Balcazar
- Grupo Genmol. Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, Colombia
- Facultad de Medicina, Departamento de fisiología y Bioquímica, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Sergio Acin
- Grupo Genmol. Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, Colombia
- Facultad de Medicina, Departamento de fisiología y Bioquímica, Universidad de Antioquia UdeA, Medellín, Colombia
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Theobald V, Schmitt FCF, Middel CS, Gaissmaier L, Brenner T, Weigand MA. Triggering receptor expressed on myeloid cells-1 in sepsis, and current insights into clinical studies. Crit Care 2024; 28:17. [PMID: 38191420 PMCID: PMC10775509 DOI: 10.1186/s13054-024-04798-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/04/2024] [Indexed: 01/10/2024] Open
Abstract
Triggering receptor expressed on myeloid cells-1 (TREM-1) is a pattern recognition receptor and plays a critical role in the immune response. TREM-1 activation leads to the production and release of proinflammatory cytokines, chemokines, as well as its own expression and circulating levels of the cleaved soluble extracellular portion of TREM-1 (sTREM-1). Because patients with sepsis and septic shock show elevated sTREM-1 levels, TREM-1 has attracted attention as an important contributor to the inadequate immune response in this often-deadly condition. Since 2001, when the first blockade of TREM-1 in sepsis was performed, many potential TREM-1 inhibitors have been established in animal models. However, only one of them, nangibotide, has entered clinical trials, which have yielded promising data for future treatment of sepsis, septic shock, and other inflammatory disease such as COVID-19. This review discusses the TREM-1 pathway and important ligands, and highlights the development of novel inhibitors as well as their clinical potential for targeted treatment of various inflammatory conditions.
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Affiliation(s)
- Vivienne Theobald
- Department of Anesthesiology, Medical Faculty Heidelberg, Heidelberg University, Im Neuenheimer Feld 672, 69120, Heidelberg, Germany
| | - Felix Carl Fabian Schmitt
- Department of Anesthesiology, Medical Faculty Heidelberg, Heidelberg University, Im Neuenheimer Feld 672, 69120, Heidelberg, Germany
| | - Chiara Simone Middel
- Department of Anesthesiology, Medical Faculty Heidelberg, Heidelberg University, Im Neuenheimer Feld 672, 69120, Heidelberg, Germany
| | - Lena Gaissmaier
- Department of Anesthesiology, Medical Faculty Heidelberg, Heidelberg University, Im Neuenheimer Feld 672, 69120, Heidelberg, Germany
| | - Thorsten Brenner
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Markus Alexander Weigand
- Department of Anesthesiology, Medical Faculty Heidelberg, Heidelberg University, Im Neuenheimer Feld 672, 69120, Heidelberg, Germany.
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Wang Z, Hu D, Pei G, Zeng R, Yao Y. Identification of driver genes in lupus nephritis based on comprehensive bioinformatics and machine learning. Front Immunol 2023; 14:1288699. [PMID: 38130724 PMCID: PMC10733527 DOI: 10.3389/fimmu.2023.1288699] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
Background Lupus nephritis (LN) is a common and severe glomerulonephritis that often occurs as an organ manifestation of systemic lupus erythematosus (SLE). However, the complex pathological mechanisms associated with LN have hindered the progress of targeted therapies. Methods We analyzed glomerular tissues from 133 patients with LN and 51 normal controls using data obtained from the GEO database. Differentially expressed genes (DEGs) were identified and subjected to enrichment analysis. Weighted gene co-expression network analysis (WGCNA) was utilized to identify key gene modules. The least absolute shrinkage and selection operator (LASSO) and random forest were used to identify hub genes. We also analyzed immune cell infiltration using CIBERSORT. Additionally, we investigated the relationships between hub genes and clinicopathological features, as well as examined the distribution and expression of hub genes in the kidney. Results A total of 270 DEGs were identified in LN. Using weighted gene co-expression network analysis (WGCNA), we clustered these DEGs into 14 modules. Among them, the turquoise module displayed a significant correlation with LN (cor=0.88, p<0.0001). Machine learning techniques identified four hub genes, namely CD53 (AUC=0.995), TGFBI (AUC=0.997), MS4A6A (AUC=0.994), and HERC6 (AUC=0.999), which are involved in inflammation response and immune activation. CIBERSORT analysis suggested that these hub genes may contribute to immune cell infiltration. Furthermore, these hub genes exhibited strong correlations with the classification, renal function, and proteinuria of LN. Interestingly, the highest hub gene expression score was observed in macrophages. Conclusion CD53, TGFBI, MS4A6A, and HERC6 have emerged as promising candidate driver genes for LN. These hub genes hold the potential to offer valuable insights into the molecular diagnosis and treatment of LN.
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Affiliation(s)
- Zheng Wang
- Division of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Danni Hu
- Division of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guangchang Pei
- Division of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rui Zeng
- Division of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Organ Transplantation, Ministry of Education, Wuhan, China
- NHC Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
- Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
| | - Ying Yao
- Division of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Liu F, Austin TR, Schrack JA, Chen J, Walston J, Mathias RA, Grams M, Odden MC, Newman A, Psaty BM, Ramonfaur D, Shah AM, Windham BG, Coresh J, Walker KA. Late-life plasma proteins associated with prevalent and incident frailty: A proteomic analysis. Aging Cell 2023; 22:e13975. [PMID: 37697678 PMCID: PMC10652348 DOI: 10.1111/acel.13975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/06/2023] [Accepted: 08/16/2023] [Indexed: 09/13/2023] Open
Abstract
Proteomic approaches have unique advantages in the identification of biological pathways that influence physical frailty, a multifactorial geriatric syndrome predictive of adverse health outcomes in older adults. To date, proteomic studies of frailty are scarce, and few evaluated prefrailty as a separate state or examined predictors of incident frailty. Using plasma proteins measured by 4955 SOMAmers in the Atherosclerosis Risk in Community study, we identified 134 and 179 proteins cross-sectionally associated with prefrailty and frailty, respectively, after Bonferroni correction (p < 1 × 10-5 ) among 3838 older adults aged ≥65 years, adjusting for demographic and physiologic factors and chronic diseases. Among them, 23 (17%) and 82 (46%) were replicated in the Cardiovascular Health Study using the same models (FDR p < 0.05). Notably, higher odds of prefrailty and frailty were observed with higher levels of growth differentiation factor 15 (GDF15; pprefrailty = 1 × 10-15 , pfrailty = 2 × 10-19 ), transgelin (TAGLN; pprefrailty = 2 × 10-12 , pfrailty = 6 × 10-22 ), and insulin-like growth factor-binding protein 2 (IGFBP2; pprefrailty = 5 × 10-15 , pfrailty = 1 × 10-15 ) and with a lower level of growth hormone receptor (GHR, pprefrailty = 3 × 10-16 , pfrailty = 2 × 10-18 ). Longitudinally, we identified 4 proteins associated with incident frailty (p < 1 × 10-5 ). Higher levels of triggering receptor expressed on myeloid cells 1 (TREM1), TAGLN, and heart and adipocyte fatty-acid binding proteins predicted incident frailty. Differentially regulated proteins were enriched in pathways and upstream regulators related to lipid metabolism, angiogenesis, inflammation, and cell senescence. Our findings provide a set of plasma proteins and biological mechanisms that were dysregulated in both the prodromal and the clinical stage of frailty, offering new insights into frailty etiology and targets for intervention.
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Affiliation(s)
- Fangyu Liu
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
| | - Thomas R. Austin
- Department of EpidemiologyUniversity of WashingtonSeattleWashingtonUSA
| | - Jennifer A. Schrack
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
- Center on Aging and HealthJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Jingsha Chen
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
| | - Jeremy Walston
- Department of MedicineJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Rasika A. Mathias
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
- Department of MedicineJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Morgan Grams
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
- Division of Precision MedicineNew York University Grossman School of MedicineNew YorkNew YorkUSA
| | - Michelle C. Odden
- Department of Epidemiology and Population HealthStanford University School of MedicineStanfordCaliforniaUSA
| | - Anne Newman
- Department of EpidemiologyUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Bruce M. Psaty
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, and Health Systems and Population HealthUniversity of WashingtonSeattleWashingtonUSA
| | - Diego Ramonfaur
- Brigham and Women's Hospital, Harvard Medical School, Cardiovascular MedicineBostonMassachusettsUSA
| | - Amil M. Shah
- Brigham and Women's Hospital, Harvard Medical School, Cardiovascular MedicineBostonMassachusettsUSA
| | - B. Gwen Windham
- Department of Medicine, MIND CenterUniversity of Mississippi Medical CenterJacksonMississippiUSA
| | - Josef Coresh
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
| | - Keenan A. Walker
- Laboratory of Behavioral NeuroscienceNational Institute on AgingBaltimoreMarylandUSA
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9
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Juric V, Mayes E, Binnewies M, Lee T, Canaday P, Pollack JL, Rudolph J, Du X, Liu VM, Dash S, Palmer R, Jahchan NS, Ramoth ÅJ, Lacayo S, Mankikar S, Norng M, Brassell C, Pal A, Chan C, Lu E, Sriram V, Streuli M, Krummel MF, Baker KP, Liang L. TREM1 activation of myeloid cells promotes antitumor immunity. Sci Transl Med 2023; 15:eadd9990. [PMID: 37647386 DOI: 10.1126/scitranslmed.add9990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/02/2023] [Indexed: 09/01/2023]
Abstract
Myeloid cells in the tumor microenvironment (TME) can exist in immunosuppressive and immunostimulatory states that impede or promote antitumor immunity, respectively. Blocking suppressive myeloid cells or increasing stimulatory cells to enhance antitumor immune responses is an area of interest for therapeutic intervention. Triggering receptor expressed on myeloid cells-1 (TREM1) is a proinflammatory receptor that amplifies immune responses. TREM1 is expressed on neutrophils, subsets of monocytes and tissue macrophages, and suppressive myeloid populations in the TME, including tumor-associated neutrophils, monocytes, and tumor-associated macrophages. Depletion or inhibition of immunosuppressive myeloid cells, or stimulation by TREM1-mediated inflammatory signaling, could be used to promote an immunostimulatory TME. We developed PY159, an afucosylated humanized anti-TREM1 monoclonal antibody with enhanced FcγR binding. PY159 is a TREM1 agonist that induces signaling, leading to up-regulation of costimulatory molecules on monocytes and macrophages, production of proinflammatory cytokines and chemokines, and enhancement of T cell activation in vitro. An antibody against mouse TREM1, PY159m, promoted antitumor efficacy in syngeneic mouse tumor models. These results suggest that PY159-mediated agonism of TREM1 on tumoral myeloid cells can promote a proinflammatory TME and offer a promising strategy for immunotherapy.
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Affiliation(s)
- Vladislava Juric
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Erin Mayes
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Mikhail Binnewies
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Tian Lee
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Pamela Canaday
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Joshua L Pollack
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Joshua Rudolph
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Xiaoyan Du
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Victoria M Liu
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Subhadra Dash
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Rachael Palmer
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Nadine S Jahchan
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Åsa Johanna Ramoth
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Sergio Lacayo
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Shilpa Mankikar
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Manith Norng
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Chris Brassell
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Aritra Pal
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Christopher Chan
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Erick Lu
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Venkataraman Sriram
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Michel Streuli
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Matthew F Krummel
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Kevin P Baker
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
| | - Linda Liang
- Pionyr Immunotherapeutics, 2 Tower Place, Suite 800, South San Francisco, CA 94080, USA
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10
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Ma K, Guo Q, Zhang X, Li Y. High Expression of Triggering Receptor Expressed on Myeloid Cells 1 Predicts Poor Prognosis in Glioblastoma. Onco Targets Ther 2023; 16:331-345. [PMID: 37274309 PMCID: PMC10238274 DOI: 10.2147/ott.s407892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 05/23/2023] [Indexed: 06/06/2023] Open
Abstract
Background Glioblastoma (GBM) is a highly malignant tumor with poor prognosis, and new treatment strategies are urgently needed. Currently, the role of triggering receptor expressed on myeloid cells 1 (TREM-1) in tumors has been studied, but the role of TREM-1 in GBM remains unclear. Methods Immunohistochemical staining for TREM-1 was performed in 91 patients diagnosed with GBM. Clinicopathological characteristics and survival times were recorded. TREM-1 expression and its effect on prognosis were analyzed using online Gene Expression Profiling Interactive Analysis (GEPIA), The Cancer Genome Atlas (TCGA), and Chinese Glioma Genome Atlas (CGGA) databases. The expression profile of TCGA-GBM cohort was used to perform functional enrichment analysis. The CIBERSORT method and Tumor Immune Estimation Resource (TIMER) database were used to estimate the tumor-infiltrating immune cells (TIICs). The ESTIMATE algorithm was used to estimate the immune-stromal scores. Finally, the relationships of TREM-1 with TIICs, immune-stromal score, and immune checkpoint genes (ICGs) were analyzed. Results The expression of TREM-1 was upregulated in GBM, and high TREM-1 expression predicted a poor prognosis. TREM-1, surgical resection, postoperative radiotherapy, and temozolomide (TMZ) chemotherapy were associated with the survival time of patients with GBM, but only surgical resection and TREM-1 expression were independent prognostic factors. GBM with high TREM-1 expression exhibited increased neutrophil and macrophage infiltration. TREM-1 was positively associated with the immune-stromal score and multiple ICGs, and most of which were involved in immunosuppressive responses. Conclusion The present study revealed that high expression of TREM-1 in GBM is an independent poor prognosis factor and that TREM-1 is associated with the immunosuppressive microenvironment. Thus, blocking TREM-1 may be a strategy for enhancing the GBM immune response.
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Affiliation(s)
- Ke Ma
- Department of Medical Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, People’s Republic of China
| | - Qianqian Guo
- Department of Medical Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, People’s Republic of China
| | - Xianwei Zhang
- Department of Pathology, Henan Provincial People’s Hospital; People’s Hospital of Zhengzhou University; People’s Hospital of Henan University, Zhengzhou, Henan, 450003, People’s Republic of China
| | - Yanxin Li
- Department of Neurosurgery, Henan Provincial People’s Hospital; People’s Hospital of Zhengzhou University; People’s Hospital of Henan University, Zhengzhou, Henan, 450003, People’s Republic of China
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11
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Atre R, Sharma R, Vadim G, Solanki K, Wadhonkar K, Singh N, Patidar P, Khabiya R, Samaur H, Banerjee S, Baig MS. The indispensability of macrophage adaptor proteins in chronic inflammatory diseases. Int Immunopharmacol 2023; 119:110176. [PMID: 37104916 DOI: 10.1016/j.intimp.2023.110176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 04/06/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023]
Abstract
Adaptor proteins represent key signalling molecules involved in regulating immune responses. The host's innate immune system recognizes pathogens via various surface and intracellular receptors. Adaptor molecules are centrally involved in different receptor-mediated signalling pathways, acting as bridges between the receptors and other molecules. The presence of adaptors in major signalling pathways involved in the pathogenesis of various chronic inflammatory diseases has drawn attention toward the role of these proteins in such diseases. In this review, we summarize the importance and roles of different adaptor molecules in macrophage-mediated signalling in various chronic disease states. We highlight the mechanistic roles of adaptors and how they are involved in protein-protein interactions (PPI) via different domains to carry out signalling. Hence, we also provide insights into how targeting these adaptor proteins can be a good therapeutic strategy against various chronic inflammatory diseases.
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Affiliation(s)
- Rajat Atre
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India
| | - Rahul Sharma
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India
| | - Gaponenko Vadim
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Kundan Solanki
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India
| | - Khandu Wadhonkar
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India
| | - Neha Singh
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India
| | - Pramod Patidar
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India
| | - Rakhi Khabiya
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India; School of Pharmacy, Devi Ahilya Vishwavidyalaya, Indore, India
| | - Harshita Samaur
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India
| | - Sreeparna Banerjee
- Department of Biological Sciences, Middle East Technical University, Ankara, Turkey.
| | - Mirza S Baig
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India.
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Moura RR, Brandão L, Moltrasio C, Agrelli A, Tricarico PM, Maronese CA, Crovella S, Marzano AV. Different molecular pathways are disrupted in Pyoderma gangrenosum patients and are associated with the severity of the disease. Sci Rep 2023; 13:4919. [PMID: 36966241 PMCID: PMC10039684 DOI: 10.1038/s41598-023-31914-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 03/20/2023] [Indexed: 03/27/2023] Open
Abstract
Pyoderma gangrenosum (PG) is a rare inflammatory skin disease classified within the spectrum of neutrophilic dermatoses. The pathophysiology of PG is yet incompletely understood but a prominent role of genetics facilitating immune dysregulation has been proposed. This study investigated the potential contribution of disrupted molecular pathways in determining the susceptibility and clinical severity of PG. Variant Enrichment Analysis, a bioinformatic pipeline applicable for Whole Exome Sequencing data was performed in unrelated PG patients. Eleven patients were enrolled, including 5 with unilesional and 6 with multilesional PG. Fourteen pathways were exclusively enriched in the "multilesional" group, mainly related to immune system (i.e., type I interferon signaling pathway), cell metabolism and structural functions. In the "unilesional" group, nine pathways were found to be exclusively enriched, mostly related to cell signaling and cell metabolism. Genetically altered pathways involved in immune system biology and wound repair appear to be nodal pathogenic drivers in PG pathogenesis.
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Affiliation(s)
- Ronald Rodrigues Moura
- Department of Advanced Diagnostics, Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", 34137, Trieste, Italy
| | - Lucas Brandão
- Department of Pathology, Federal University of Pernambuco, Recife, 50670-901, Brazil
| | - Chiara Moltrasio
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Almerinda Agrelli
- Laboratory of Nanostructured Materials (LMNANO), Center for Strategic Technologies Northeastern (CETENE), Av. Prof. Luís Freire, 1-Cidade Universitária, Recife, 50740-545, Brazil
| | - Paola Maura Tricarico
- Department of Advanced Diagnostics, Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", 34137, Trieste, Italy
| | - Carlo Alberto Maronese
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Physiopathology and Transplantation, Università Degli Studi Di Milano, Via Pace 9, 20122, Milan, Italy
| | - Sergio Crovella
- Biological Science Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, State of Qatar
| | - Angelo Valerio Marzano
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
- Department of Physiopathology and Transplantation, Università Degli Studi Di Milano, Via Pace 9, 20122, Milan, Italy.
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13
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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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14
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Persistently Elevated Soluble Triggering Receptor Expressed on Myeloid Cells 1 and Decreased Monocyte Human Leucocyte Antigen DR Expression Are Associated With Nosocomial Infections in Septic Shock Patients. Crit Care Explor 2023; 5:e0869. [PMID: 36861044 PMCID: PMC9970267 DOI: 10.1097/cce.0000000000000869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Abstract
Sepsis-acquired immunosuppression may play a major role in patients' prognosis through increased risk of secondary infections. Triggering receptor expressed on myeloid cells 1 (TREM-1) is an innate immune receptor involved in cellular activation. Its soluble form (sTREM-1) has been described as a robust marker of mortality in sepsis. The objective of this study was to evaluate its association with the occurrence of nosocomial infections alone or in combination with human leucocyte antigen-DR on monocytes (mHLA-DR). DESIGN Observational study. SETTING University Hospital in France. PATIENTS One hundred sixteen adult septic shock patients as a post hoc study from the IMMUNOSEPSIS cohort (NCT04067674). INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Plasma sTREM-1 and monocyte HLA-DR were measured at day 1 or 2 (D1/D2), D3/D4, and D6/D8 after admission. Associations with nosocomial infection were evaluated through multivariable analyses. At D6/D8, both markers were combined, and association with increased risk of nosocomial infection was evaluated in the subgroup of patients with most deregulated markers in a multivariable analysis with death as a competing risk. Significantly decreased mHLA-DR at D6/D8 and increased sTREM-1 concentrations were measured at all time points in nonsurvivors compared with survivors. Decreased mHLA-DR at D6/D8 was significantly associated with increased risk of secondary infections after adjustment for clinical parameters with a subdistribution hazard ratio of 3.61 (95% CI, 1.39-9.34; p = 0.008). At D6/D8, patients with persistently high sTREM-1 and decreased mHLA-DR presented with a significantly increased risk of infection (60%) compared with other patients (15.7%). This association remained significant in the multivariable model (subdistribution hazard ratio [95% CI], 4.65 [1.98-10.9]; p < 0.001). CONCLUSIONS In addition to its prognostic interest on mortality, sTREM-1, when combined with mHLA-DR, may help to better identify immunosuppressed patients at risk of nosocomial infections.
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15
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Zaidi SAH, Lemtalsi T, Xu Z, Santana I, Sandow P, Labazi L, Caldwell RW, Caldwell RB, Rojas MA. Role of acyl-coenzyme A: cholesterol transferase 1 (ACAT1) in retinal neovascularization. J Neuroinflammation 2023; 20:14. [PMID: 36691048 PMCID: PMC9869542 DOI: 10.1186/s12974-023-02700-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 01/13/2023] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND We have investigated the efficacy of a new strategy to limit pathological retinal neovascularization (RNV) during ischemic retinopathy by targeting the cholesterol metabolizing enzyme acyl-coenzyme A: cholesterol transferase 1 (ACAT1). Dyslipidemia and cholesterol accumulation have been strongly implicated in promoting subretinal NV. However, little is known about the role of cholesterol metabolism in RNV. Here, we tested the effects of inhibiting ACAT1 on pathological RNV in the mouse model of oxygen-induced retinopathy (OIR). METHODS In vivo studies used knockout mice that lack the receptor for LDL cholesterol (LDLR-/-) and wild-type mice. The wild-type mice were treated with a specific inhibitor of ACAT1, K604 (10 mg/kg, i.p) or vehicle (PBS) during OIR. In vitro studies used human microglia exposed to oxygen-glucose deprivation (OGD) and treated with the ACAT1 inhibitor (1 μM) or PBS. RESULTS Analysis of OIR retinas showed that increased expression of inflammatory mediators and pathological RNV were associated with significant increases in expression of the LDLR, increased accumulation of neutral lipids, and formation of toxic levels of cholesterol ester (CE). Deletion of the LDLR completely blocked OIR-induced RNV and significantly reduced the AVA. The OIR-induced increase in CE formation was accompanied by significant increases in expression of ACAT1, VEGF and inflammatory factors (TREM1 and MCSF) (p < 0.05). ACAT1 was co-localized with TREM1, MCSF, and macrophage/microglia makers (F4/80 and Iba1) in areas of RNV. Treatment with K604 prevented retinal accumulation of neutral lipids and CE formation, inhibited RNV, and decreased the AVA as compared to controls (p < 0.05). The treatment also blocked upregulation of LDLR, ACAT1, TREM1, MCSF, and inflammatory cytokines but did not alter VEGF expression. K604 treatment of microglia cells also blocked the effects of OGD in increasing expression of ACAT1, TREM1, and MCSF without altering VEGF expression. CONCLUSIONS OIR-induced RNV is closely associated with increases in lipid accumulation and CE formation along with increased expression of LDLR, ACAT1, TREM1, and MCSF. Inhibiting ACAT1 blocked these effects and limited RNV independently of alterations in VEGF expression. This pathway offers a novel strategy to limit vascular injury during ischemic retinopathy.
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Affiliation(s)
- Syed A H Zaidi
- Vascular Biology Center, Augusta University, 1460 Laney Walker Blvd, Augusta, GA, 30912-2500, USA.,Culver Vision Discovery Institute, Augusta University, Augusta, GA, USA
| | - Tahira Lemtalsi
- Vascular Biology Center, Augusta University, 1460 Laney Walker Blvd, Augusta, GA, 30912-2500, USA.,Culver Vision Discovery Institute, Augusta University, Augusta, GA, USA
| | - Zhimin Xu
- Vascular Biology Center, Augusta University, 1460 Laney Walker Blvd, Augusta, GA, 30912-2500, USA.,Culver Vision Discovery Institute, Augusta University, Augusta, GA, USA
| | - Isabella Santana
- Vascular Biology Center, Augusta University, 1460 Laney Walker Blvd, Augusta, GA, 30912-2500, USA
| | - Porsche Sandow
- Culver Vision Discovery Institute, Augusta University, Augusta, GA, USA.,Department of Pharmacology and Toxicology, Augusta University, Augusta, GA, USA
| | - Leila Labazi
- Vascular Biology Center, Augusta University, 1460 Laney Walker Blvd, Augusta, GA, 30912-2500, USA
| | - Robert W Caldwell
- Culver Vision Discovery Institute, Augusta University, Augusta, GA, USA.,Department of Pharmacology and Toxicology, Augusta University, Augusta, GA, USA
| | - Ruth B Caldwell
- Vascular Biology Center, Augusta University, 1460 Laney Walker Blvd, Augusta, GA, 30912-2500, USA. .,Culver Vision Discovery Institute, Augusta University, Augusta, GA, USA. .,Department of Cellular Biology and Anatomy, Augusta University, Augusta, GA, USA.
| | - Modesto A Rojas
- Vascular Biology Center, Augusta University, 1460 Laney Walker Blvd, Augusta, GA, 30912-2500, USA. .,Culver Vision Discovery Institute, Augusta University, Augusta, GA, USA. .,Department of Pharmacology and Toxicology, Augusta University, Augusta, GA, USA.
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16
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Panagopoulos A, Samant S, Bakhos JJ, Liu M, Khan B, Makadia J, Muhammad F, Kievit FM, Agrawal DK, Chatzizisis YS. Triggering receptor expressed on myeloid cells-1 (TREM-1) inhibition in atherosclerosis. Pharmacol Ther 2022; 238:108182. [DOI: 10.1016/j.pharmthera.2022.108182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 03/14/2022] [Accepted: 03/30/2022] [Indexed: 11/29/2022]
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17
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Shi X, Wei T, Hu Y, Wang M, Tang Y. The associations between plasma soluble Trem1 and neurological diseases: a Mendelian randomization study. J Neuroinflammation 2022; 19:218. [PMID: 36068612 PMCID: PMC9446564 DOI: 10.1186/s12974-022-02582-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/27/2022] [Indexed: 12/08/2022] Open
Abstract
Background Triggering receptor expressed on myeloid cell 1 (Trem1) is an important regulator of cellular inflammatory responses. Neuroinflammation is a common thread across various neurological diseases. Soluble Trem1 (sTrem1) in plasma is associated with the development of central nervous system disorders. However, the extent of any causative effects of plasma sTrem1 on the risk of these disorders is still unclear. Method Genetic variants for plasma sTrem1 levels were selected as instrumental variables. Summary-level statistics of neurological disorders, including Alzheimer’s disease (AD), Parkinson’s disease (PD), amyotrophic lateral sclerosis (ALS), multiple sclerosis (MS), epilepsy, cerebrovascular diseases, and migraine were collected from genome-wide association studies (GWASs). Whether plasma sTrem1 was causally associated with neurological disorders was assessed using a two-sample Mendelian randomization (MR) analysis, with false discovery rate (FDR)-adjusted methods applied. Results We inferred suggestive association of higher plasma sTrem1 with the risk of AD (odds ratio [OR] per one standard deviation [SD] increase = 1.064, 95% CI 1.012–1.119, P = 0.014, PFDR = 0.056). Moreover, there was significant association between plasma sTrem1 level and the risk of epilepsy (OR per one SD increase = 1.044, 95% CI 1.016–1.072, P = 0.002, PFDR = 0.032), with a modest statistical power of 41%. Null associations were found for plasma sTrem1 with other neurological diseases and their subtypes. Conclusions Taken together, this study indicates suggestive association between plasma sTrem1 and AD. Moreover, higher plasma sTrem1 was associated with the increased risk of epilepsy. The findings support the hypothesis that sTrem1 may be a vital element on the causal pathway to AD and epilepsy. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02582-z.
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Affiliation(s)
- Xiaolei Shi
- Geriatric Neuroscience Center, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China.,Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, China
| | - Tao Wei
- Innovation Center for Neurological Disorders, Department of Neurology, National Center for Neurological Disorders, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yachun Hu
- Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, China.,Department of Neurology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
| | - Meng Wang
- Innovation Center for Neurological Disorders, Department of Neurology, National Center for Neurological Disorders, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yi Tang
- Innovation Center for Neurological Disorders, Department of Neurology, National Center for Neurological Disorders, Xuanwu Hospital, Capital Medical University, Beijing, China. .,Neurodegenerative Laboratory of Ministry of Education of the Peoples Republic of China, Beijing, China.
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18
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Gilbert NM, O’Brien VP, Waller C, Batourina E, Mendelsohn CL, Lewis AL. Gardnerella Exposures Alter Bladder Gene Expression and Augment Uropathogenic Escherichia coli Urinary Tract Infection in Mice. Front Cell Infect Microbiol 2022; 12:909799. [PMID: 35782131 PMCID: PMC9245024 DOI: 10.3389/fcimb.2022.909799] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/05/2022] [Indexed: 12/29/2022] Open
Abstract
The anaerobic actinobacterium Gardnerella was first isolated from the bladder by suprapubic aspiration more than 50 years ago. Since then, Gardnerella has been increasingly recognized as a common and often abundant member of the female urinary microbiome (urobiome). Some studies even suggest that the presence of Gardnerella is associated with urological disorders in women. We recently reported that inoculation of Gardnerella into the bladders of mice results in urothelial exfoliation. Here, we performed whole bladder RNA-seq in our mouse model to identify additional host pathways involved in the response to Gardnerella bladder exposure. The transcriptional response to Gardnerella reflected the urothelial turnover that is a consequence of exfoliation while also illustrating the activation of pathways involved in inflammation and immunity. Additional timed exposure experiments in mice provided further evidence of a potentially clinically relevant consequence of bladder exposure to Gardnerella-increased susceptibility to subsequent UTI caused by uropathogenic Escherichia coli. Together, these data provide a broader picture of the bladder's response to Gardnerella and lay the groundwork for future studies examining the impact of Gardnerella on bladder health.
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Affiliation(s)
- Nicole M. Gilbert
- Department of Pediatrics, Division of Infectious Diseases, Washington University in St. Louis School of Medicine, St. Louis, MO, United States,*Correspondence: Nicole M. Gilbert,
| | - Valerie P. O’Brien
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Chevaughn Waller
- Department of Urology, Columbia University Irving Medical Center, New York, NY, United States
| | - Ekatherina Batourina
- Department of Urology, Columbia University Irving Medical Center, New York, NY, United States
| | - Cathy Lee Mendelsohn
- Department of Urology, Columbia University Irving Medical Center, New York, NY, United States
| | - Amanda L. Lewis
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Diego, San Diego, CA, United States
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Ondigo BN, Hamilton RE, Magomere EO, Onkanga IO, Mwinzi PN, Odiere MR, Ganley-Leal L. Potential Utility of Systemic Plasma Biomarkers for Evaluation of Pediatric Schistosomiasis in Western Kenya. Front Immunol 2022; 13:887213. [PMID: 35603171 PMCID: PMC9121796 DOI: 10.3389/fimmu.2022.887213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/08/2022] [Indexed: 01/13/2023] Open
Abstract
Introduction Current diagnostic tools for schistosomiasis are limited, and new tests are necessary to enhance disease diagnosis and surveillance. Identification of novel disease-specific biomarkers may facilitate the development of such tests. We evaluated a panel of biomarkers used in sepsis and parasitic diseases for their potential suitability in the diagnosis of schistosomiasis. Objective The study evaluated the levels of systemic plasma biomarkers in relation to Schistosoma mansoni infection and parasite burden. Methods Six biomarkers were measured in the plasma of children from schistosomiasis-endemic regions using ELISA. The concentration of soluble CD23 (sCD23) and lipopolysaccharide (LPS) was tested in 199 and 124 plasma samples, respectively, while interleukin-6 (IL-6), soluble triggering receptor expressed on myeloid (sTREM) cells, eotaxin-1, and fatty acid-binding protein (FABP) concentrations were tested in 30 plasma samples. Results The concentration of IL-6, eotaxin-1, FABP, and LPS was similar between schistosome-infected and uninfected children. The schistosome-infected children had higher median levels of sTREM and sCD23 as compared to uninfected children, 119.0 (29.9-208.9) versus 10.7 (0.0-73.4) (p = 0.046) and 2,549.0 (1,899.0-3,356.0) vs. 2,035.0 (1,448.0-2,939.0) (p = 0.05), respectively. In addition, sTREM was positively correlated with egg density (p = 0.017). Conclusion Our data show that active schistosomiasis per se is associated with elevated levels of sTREM and sCD23. sTREM has potential diagnostic and prognostic values. However, these biomarkers did not distinguish between children with low egg burden and uninfected children.
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Affiliation(s)
- Bartholomew N. Ondigo
- Department of Biochemistry and Molecular Biology, Faculty of Science, Egerton University, Egerton, Kenya,*Correspondence: Bartholomew N. Ondigo,
| | - Rachael E. Hamilton
- School of Public Health, Boston University, Boston, MA, United States,Global Development, Elegance Biotechnologies, Wayne, PA, United States
| | - Edwin O. Magomere
- Department of Biochemistry and Molecular Biology, Faculty of Science, Egerton University, Egerton, Kenya
| | - Isaac O. Onkanga
- Centre for Global Health Research, Kenya Medical Research Institute (KEMRI), Kisumu, Kenya
| | - Pauline N. Mwinzi
- Regional Office for Africa, World Health Organization, Brazzaville, Democratic Republic of Congo
| | - Maurice R. Odiere
- Centre for Global Health Research, Kenya Medical Research Institute (KEMRI), Kisumu, Kenya
| | - Lisa Ganley-Leal
- Global Development, Elegance Biotechnologies, Wayne, PA, United States
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20
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Ahmadzadeh K, Vanoppen M, Rose CD, Matthys P, Wouters CH. Multinucleated Giant Cells: Current Insights in Phenotype, Biological Activities, and Mechanism of Formation. Front Cell Dev Biol 2022; 10:873226. [PMID: 35478968 PMCID: PMC9035892 DOI: 10.3389/fcell.2022.873226] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/17/2022] [Indexed: 12/21/2022] Open
Abstract
Monocytes and macrophages are innate immune cells with diverse functions ranging from phagocytosis of microorganisms to forming a bridge with the adaptive immune system. A lesser-known attribute of macrophages is their ability to fuse with each other to form multinucleated giant cells. Based on their morphology and functional characteristics, there are in general three types of multinucleated giant cells including osteoclasts, foreign body giant cells and Langhans giant cells. Osteoclasts are bone resorbing cells and under physiological conditions they participate in bone remodeling. However, under pathological conditions such as rheumatoid arthritis and osteoporosis, osteoclasts are responsible for bone destruction and bone loss. Foreign body giant cells and Langhans giant cells appear only under pathological conditions. While foreign body giant cells are found in immune reactions against foreign material, including implants, Langhans giant cells are associated with granulomas in infectious and non-infectious diseases. The functionality and fusion mechanism of osteoclasts are being elucidated, however, our knowledge on the functions of foreign body giant cells and Langhans giant cells is limited. In this review, we describe and compare the phenotypic aspects, biological and functional activities of the three types of multinucleated giant cells. Furthermore, we provide an overview of the multinucleation process and highlight key molecules in the different phases of macrophage fusion.
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Affiliation(s)
- Kourosh Ahmadzadeh
- Laboratory of Immunobiology, Department Microbiology and Immunology, Rega Institute, KU Leuven – University of Leuven, Leuven, Belgium
- *Correspondence: Kourosh Ahmadzadeh, ; Carine Helena Wouters,
| | - Margot Vanoppen
- Laboratory of Immunobiology, Department Microbiology and Immunology, Rega Institute, KU Leuven – University of Leuven, Leuven, Belgium
| | - Carlos D. Rose
- Division of Pediatric Rheumatology Nemours Children’s Hospital, Thomas Jefferson University, Philadelphia, PA, United States
| | - Patrick Matthys
- Laboratory of Immunobiology, Department Microbiology and Immunology, Rega Institute, KU Leuven – University of Leuven, Leuven, Belgium
| | - Carine Helena Wouters
- Laboratory of Immunobiology, Department Microbiology and Immunology, Rega Institute, KU Leuven – University of Leuven, Leuven, Belgium
- Division Pediatric Rheumatology, UZ Leuven, Leuven, Belgium
- European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases (RITA) at University Hospital Leuven, Leuven, Belgium
- *Correspondence: Kourosh Ahmadzadeh, ; Carine Helena Wouters,
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21
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Ex Vivo Generation of CAR Macrophages from Hematopoietic Stem and Progenitor Cells for Use in Cancer Therapy. Cells 2022; 11:cells11060994. [PMID: 35326445 PMCID: PMC8947001 DOI: 10.3390/cells11060994] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 03/11/2022] [Indexed: 12/21/2022] Open
Abstract
Chimeric antigen receptor (CAR) T-cell therapies have shown impressive results in patients with hematological malignancies; however, little success has been achieved in the treatment of solid tumors. Recently, macrophages (MΦs) were identified as an additional candidate for the CAR approach, and initial proof of concept studies using peripheral blood-derived monocytes showed antigen-redirected activation of CAR MΦs. However, some patients may not be suitable for monocyte-apheresis, and prior cancer treatment regimens may negatively affect immune cell number and functionality. To address this problem, we here introduce primary human hematopoietic stem and progenitor cells (HSPCs) as a cell source to generate functional CAR MΦs ex vivo. Our data showed successful CAR expression in cord blood (CB)-derived HSPCs, with considerable cell expansion during differentiation to CAR MΦs. HSPC-derived MΦs showed typical MΦ morphology, phenotype, and basic anti-bacterial functionality. CAR MΦs targeting the carcinoembryonic antigen (CEA) and containing either a DAP12- or a CD3ζ-derived signaling domain showed antigen redirected activation as they secreted pro-inflammatory cytokines specifically upon contact with CEA+ target cells. In addition, CD3ζ-expressing CAR MΦs exhibited significantly enhanced phagocytosis of CEA+ HT1080 cells. Our data establish human HSPCs as a suitable cell source to generate functional CAR MΦs and further support the use of CAR MΦs in the context of solid tumor therapy.
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22
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RNA sequencing of chronic GVHD skin lesions defines shared and unique inflammatory pathways characterizing lichen planus and morphea. Blood Adv 2022; 6:2805-2811. [PMID: 35008096 PMCID: PMC9092416 DOI: 10.1182/bloodadvances.2021004707] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 12/12/2021] [Indexed: 11/20/2022] Open
Abstract
Cutaneous involvement of chronic graft-versus-host disease (cGVHD) has a wide range of manifestations including a lichenoid form with a currently assumed mixed Th1/Th17 signature and a sclerotic form with Th1 signature. Despite substantial heterogeneity of innate and adaptive immune cells recruited to the skin and of the different clinical manifestations, treatment depends mainly on the severity of the skin involvement, and relies on systemic, high-dose glucocorticoids alone or in combination with a calcineurin inhibitor. We performed the first study using RNAseq to profile and compare the transcriptome of lichen planus cGVHD (n=8), morphea cGVHD (n=5), and healthy controls (n=6). Our findings revealed shared and unique inflammatory pathways to each cGVHD subtype that are both pathogenic and targetable. In particular, the deregulation of IFN signaling pathway was strongly associated with cutaneous cGVHD, whereas the triggering receptor expressed on myeloid cells-1 (TREM-1) pathway was found to be specific of lichen planus and likely contributes to its pathogenesis. The results were confirmed at a protein level by performing immunohistochemistry staining and at a transcriptomic level using Real-Time quantitative PCR.
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23
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Duc Nguyen H, Hoang NMH, Jo WH, Ham JR, Lee MK, Kim MS. Associations among the TREM-1 Pathway, Tau Hyperphosphorylation, Prolactin Expression, and Metformin in Diabetes Mice. Neuroimmunomodulation 2022; 29:359-368. [PMID: 35130556 DOI: 10.1159/000521013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 11/08/2021] [Indexed: 01/06/2023] Open
Abstract
INTRODUCTION Diabetes mellitus (DM) is a risk factor for Alzheimer's disease (AD). Increasing evidence indicates that the triggering receptor expressed on myeloid cells (TREM)-1 amplifies chronic inflammation, as well as the roles of prolactin (PRL) and metformin (MET) in tau hyperphosphorylation. However, the associations among TREM-1, tau hyperphosphorylation, PRL expression, and MET in DM remain unclear. METHODS Streptozotocin was used to induce experimental DM in C57BL/6N mice. MET was orally administered at a dose of 400 mg/kg body weight for 6 weeks prior to hippocampal collection in DM mice. Various parameters pertaining to the TREM-1 pathway, tau hyperphosphorylation, PRL, and related factors were analyzed. RESULTS Quantitative polymerase chain reaction and Western blot analysis demonstrated that the expression levels of TREM-1, DAP12, casp1, interleukin-1β, Cox2, inducible nitric oxide synthase, pituitary transcriptional factor-1 (Pit-1), and PRL were significantly increased in the hippocampus of DM mice; the expression levels of these pro-inflammatory mediators, PRL receptor (PRLR) short or long (PRLR-S and PRLR-L), and PRL regulatory element-binding (Preb) protein in DM mice treated with MET (DM + MET) were significantly decreased compared with those in control (CON) mice. The levels of p-Tau and glycogen synthase kinase-3 in the DM group were significantly higher than those in the CON group and significantly lower than those in the DM + MET group. CONCLUSION We confirmed the therapeutic potential of MET for both DM and neurodegeneration. Our findings shed new light on the effects of DM on the pathophysiology of AD via the TREM-1 pathway and PRL expression. Thus, an improved understanding of the TREM-1 pathway in hyperglycemic conditions, as well as PRL, Preb, Pit-1, PRLR-L, and PRLR-S gene expression in the liver, brain, and other sites, may help unravel the pathogenesis of insulin resistance and neurodegeneration.
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Affiliation(s)
- Hai Duc Nguyen
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Ngoc Minh Hong Hoang
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Won Hee Jo
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Ju Ri Ham
- Department of Food and Nutrition, Sunchon National University, Suncheon, Republic of Korea
- Mokpo Marine Food-Industry Research Center, Mokpo, Jeonam, Republic of Korea
| | - Mi-Kyung Lee
- Department of Food and Nutrition, Sunchon National University, Suncheon, Republic of Korea
| | - Min Sun Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
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24
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Zeng M, Li Q, Chen J, Huang W, Liu J, Wang C, Huang M, Li H, Zhou S, Xie M, Zeng K. The Fgl2 interaction with Tyrobp promotes the proliferation of cutaneous squamous cell carcinoma by regulating ERK-dependent autophagy. Int J Med Sci 2022; 19:195-204. [PMID: 34975313 PMCID: PMC8692121 DOI: 10.7150/ijms.66929] [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: 09/08/2021] [Accepted: 11/30/2021] [Indexed: 11/05/2022] Open
Abstract
Human fibroleukin 2 (Fgl2), a member of the fibrinogen superfamily, can cleave prothrombin to generate thrombin or is secreted in a soluble form as a new type of effector of Tregs with immunomodulatory functions. However, there is little research on the role of Fgl2 in cutaneous squamous cell carcinoma (CSCC) growth. We examined the expression of Fgl2 in samples from CSCC patients and CSCC cell lines. Then, the effect of Fgl2 on CSCC was evaluated in vitro and in animals. Regulation of autophagy by Fgl2 was explored in CSCC. Coimmunoprecipitation (Co-IP) and immunofluorescence colocalization experiments were conducted to identify the regulatory effect of Fgl2 on the downstream protein Tyrobp. Then, gain- or loss-of-function analyses and evaluation of Tyrobp expression were performed to validate its role in autophagy and proliferation promoted by Fgl2. Here, our study demonstrated that Fgl2 promoted the proliferation of CSCC cells in vitro and in vivo. Knocking down Fgl2 reduced CSCC cell proliferation and inhibited autophagy in CSCC. Mechanistically, Fgl2 interacted with Tyrobp and promoted ERK-dependent autophagy, resulting in the proliferation of CSCC cells. Our study suggested that Fgl2 could be a promising prognostic biomarker and useful therapeutic target for CSCC.
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Affiliation(s)
- Mei Zeng
- Department of Dermatology, Huizhou Municipal Central Hospital, Huizhou 516000, Guangdong, People's Republic of China.,Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong, People's Republic of China
| | - Qingxiang Li
- Department of Dermatology, Huizhou Municipal Central Hospital, Huizhou 516000, Guangdong, People's Republic of China
| | - Junzhao Chen
- Department of Dermatology, Huizhou Municipal Central Hospital, Huizhou 516000, Guangdong, People's Republic of China
| | - Wenfu Huang
- Department of Dermatology, Huizhou Municipal Central Hospital, Huizhou 516000, Guangdong, People's Republic of China
| | - Jinhua Liu
- Department of Dermatology, Huizhou Municipal Central Hospital, Huizhou 516000, Guangdong, People's Republic of China
| | - Cuiyan Wang
- Department of Dermatology, Huizhou Municipal Central Hospital, Huizhou 516000, Guangdong, People's Republic of China
| | - Manni Huang
- Department of Dermatology, Huizhou Municipal Central Hospital, Huizhou 516000, Guangdong, People's Republic of China
| | - Hui Li
- Department of Dermatology, Huizhou Municipal Central Hospital, Huizhou 516000, Guangdong, People's Republic of China
| | - Shu Zhou
- Department of Dermatology, Huizhou Municipal Central Hospital, Huizhou 516000, Guangdong, People's Republic of China
| | - Miaoying Xie
- Department of Dermatology, Huizhou Municipal Central Hospital, Huizhou 516000, Guangdong, People's Republic of China
| | - Kang Zeng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong, People's Republic of China
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25
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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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26
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Li J, Yang S, Liu S, Chen Y, Liu H, Su Y, Liu R, Cui Y, Song Y, Teng Y, Wang T. Transcriptomic Profiling Reveals a Role for TREM-1 Activation in Enterovirus D68 Infection-Induced Proinflammatory Responses. Front Immunol 2021; 12:749618. [PMID: 34887856 PMCID: PMC8650217 DOI: 10.3389/fimmu.2021.749618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 11/04/2021] [Indexed: 11/18/2022] Open
Abstract
Increasing cases related to the pathogenicity of Enterovirus D68 (EV-D68) have made it a growing worldwide public health concern, especially due to increased severe respiratory illness and acute flaccid myelitis (AFM) in children. There are currently no vaccines or medicines to prevent or treat EV-D68 infections. Herein, we performed genome-wide transcriptional profiling of EV-D68-infected human rhabdomyosarcoma (RD) cells to investigate host-pathogen interplay. RNA sequencing and subsequent experiments revealed that EV-D68 infection induced a profound transcriptional dysregulation of host genes, causing significantly elevated inflammatory responses and altered antiviral immune responses. In particular, triggering receptor expressed on myeloid cells 1 (TREM-1) is involved in highly activated TREM-1 signaling processes, acting as an important mediator in EV-D68 infection, and it is related to upregulation of interleukin 8 (IL-8), IL-6, IL-12p70, IL-1β, and tumor necrosis factor alpha (TNF-α). Further results demonstrated that NF-κB p65 was essential for EV-D68-induced TREM-1 upregulation. Moreover, inhibition of the TREM1 signaling pathway by the specific inhibitor LP17 dampened activation of the p38 mitogen-activated protein kinase (MAPK) signaling cascade, suggesting that TREM-1 mainly transmits activation signals to phosphorylate p38 MAPK. Interestingly, treatment with LP17 to inhibit TREM-1 inhibited viral replication and infection. These findings imply the pathogenic mechanisms of EV-D68 and provide critical insight into therapeutic intervention in enterovirus diseases.
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Affiliation(s)
- Jinyu Li
- School of Life Sciences, Tianjin University, Tianjin, China.,State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Shan Yang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Sihua Liu
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Yulu Chen
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Hongyun Liu
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Yazhi Su
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Ruicun Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yujun Cui
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yajun Song
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yue Teng
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Tao Wang
- School of Life Sciences, Tianjin University, Tianjin, China.,Institute of Tianjin Key Laboratory of Function and Application of Biological Macromolecular Structures, Tianjin, China
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27
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Balaji S, Cholan PK, Victor DJ. Evaluation of "soluble triggering receptor expressed on myeloid cells-1 (sTREM-1), interleukin-1β, and matrix metalloproteinase-8" as a short panel of salivary biomarkers in patients with and without stage III/IV periodontitis and type 2 diabetes mellitus. J Oral Biol Craniofac Res 2021; 12:33-37. [PMID: 34745862 DOI: 10.1016/j.jobcr.2021.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 10/04/2021] [Indexed: 12/20/2022] Open
Abstract
Background and aim Periodontitis involves a dynamic disease process, demanding the identification of biomarkers to diagnose the current state of disease activity. Therefore this study assessed the potential of "sTREM-1, IL-1β, and MMP-8" as a short panel of biomarkers of host biological process indicating the inflammatory burden in periodontium and thereby serving as a panel of diagnostic markers in periodontal disease. Methods Sixty eight patients were recruited and allotted into four groups comprising of subjects with clinically healthy gingiva and Stage III/IV Periodontitis with and without type 2 diabetes with HbA1c levels in the range of 6.5-7.9%. Periodontal parameters were measured and full mouth radiographic assessment was done. Whole saliva (unstimulated) samples were collected from all patients and estimation of the levels of markers was done employing ELISA. Results All the three biomarkers were noted to be the lowest in group I (sTREM-1: 75.63 ± 13.77; IL-1β: 15.67 ± 3.39; MMP-8: 85.83 ± 22.32) and highest in group IV (sTREM-1: 138.83 ± 14.89; IL-1β: 39.19 ± 7.20; MMP-8: 201.15 ± 50.32) with statistically significant difference. The difference observed between groups II and III for all the biomarkers assessed were statistically insignificant. The clinical parameters and HbA1c levels had positive correlation with the levels of biomarkers which was statistically significant. Conclusion This study unveils the potential of the short panel of biomarkers ("sTREM-1, IL-1β, and MMP-8") to be used as diagnostic and possible prognostic markers for Periodontitis. It further corroborates the role of type 2 diabetes mellitus in amplifying the diverse processes that result in periodontal destruction.
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Affiliation(s)
- Saranya Balaji
- Department of Periodontics, SRM Dental College, Ramapuram, Chennai, India
| | - Priyanka K Cholan
- Department of Periodontics, SRM Dental College, Ramapuram, Chennai, India
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Wu X, Zeng H, Xu C, Chen H, Fan L, Zhou H, Yu Q, Fu X, Peng Y, Yan F, Yu X, Chen G. TREM1 Regulates Neuroinflammatory Injury by Modulate Proinflammatory Subtype Transition of Microglia and Formation of Neutrophil Extracellular Traps via Interaction With SYK in Experimental Subarachnoid Hemorrhage. Front Immunol 2021; 12:766178. [PMID: 34721438 PMCID: PMC8548669 DOI: 10.3389/fimmu.2021.766178] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 09/28/2021] [Indexed: 11/13/2022] Open
Abstract
Neuroinflammation is a key process in the pathogenesis of subarachnoid hemorrhage (SAH) and contributes to poor outcome in patients. The purpose of this study is to explore the effect of triggering receptor expressed on myeloid cells 1 (TREM1) in the SAH, as well as its potential mechanism. In our study, plasma levels of soluble TREM1 was increased significantly after SAH and correlated to SAH severity and serum C-reactiveprotein. TREM1 inhibitory peptide LP17 alleviated the neurological deficits, attenuated brain water content, and reduced neuronal damage after SAH. Meanwhile, TREM1 inhibitory peptide decreased neuroinflammation (evidenced by the decreased levels of markers including IL-6, IL-1β, TNF-α) by attenuating proinflammatory subtype transition of microglia (evidenced by the decreased levels of markers including CD68, CD16, CD86) and decreasing the formation of neutrophil extracellular traps (evidenced by the decreased levels of markers including CitH3, MPO, and NE). Further mechanistic study identified that TREM1 can activate downstream proinflammatory pathways through interacting with spleen tyrosine kinase (SYK). In conclusion, inhibition of TREM1 alleviates neuroinflammation by attenuating proinflammatory subtype transition of microglia and decreasing the formation of neutrophil extracellular traps through interacting with SYK after SAH. TREM1 may be a a promising therapeutic target for SAH.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Xiaobo Yu
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Gao Chen
- Department of Neurological Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Abstract
Triggering Receptor Expressed on Myeloid Cells 1 (TREM-1) amplifies the immune response, operating synergistically with Toll-Like Receptors (TLRs) in the production of inflammatory mediators. TREM-1 signaling depends on the adapter protein DAP12, which results in the activation of NFkB, the expression of inflammatory genes, and the release of antimicrobial peptides, such as Beta-defensin 2. We evaluated the activation of the TREM-1 signaling pathways in Cutaneous Leishmaniasis (CL) caused by Leishmania braziliensis and linage human keratinocytes exposed to these parasites since the host immune response against Leishmania plays a critical role in promoting parasite killing but also participates in inflammation and tissue damage. We analyzed publicly available transcriptome data from the lesions of CL patients. In the CL biopsies, we found increased expression of the molecules involved in the TREM-1 pathway. We then validated these findings with RT-qPCR and immunohistochemistry in newly obtained biopsies. Surprisingly, we found a strong labeling of TREM-1 in keratinocytes, prompting the hypothesis that increased TREM-1 activation may be the result of tissue damage. However, increased TREM-1 expression was only seen in human lineage keratinocytes following parasite stimulation. Moreover, no up-regulation of TREM-1 expression was observed in the skin lesions caused by other non-infectious inflammatory diseases. Together, these findings indicate that L. braziliensis (Lb) induces the expression of the TREM-1 receptor in tissue keratinocytes regardless of tissue damage, suggesting that non-immune skin cells may play a role in the inflammatory response of CL.
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Tornai D, Vitalis Z, Jonas A, Janka T, Foldi I, Tornai T, Sipeki N, Csillag A, Balogh B, Sumegi A, Foldesi R, Papp M, Antal-Szalmas P. Increased sTREM-1 levels identify cirrhotic patients with bacterial infection and predict their 90-day mortality. Clin Res Hepatol Gastroenterol 2021; 45:101579. [PMID: 33773436 DOI: 10.1016/j.clinre.2020.11.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 10/06/2020] [Accepted: 11/06/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Patients with cirrhosis are susceptible to bacterial infections (BIs) that are major causes of specific complications and mortality. However, the diagnosis of BIs can often be difficult in advanced disease stage since their symptoms may overlap with the ones of acute decompensation (AD). Soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) is released from monocytes/macrophages and neutrophils during activation and has been reported to correlate with activity of various inflammatory processes. We investigated its diagnostic and prognostic performance in patients with cirrhosis and BI. METHODS Sera of 269 patients were assayed for sTREM-1 by ELISA (172 outpatients and 97 patients with AD of whom 56 had BI). We investigated capacity of sTREM-1 to identify patients with BI and conducted a 90-day follow-up observational study to assess its possible association with short-term mortality. RESULTS sTREM-1 levels were significantly higher in patients with more severe liver disease, BI, and acute-on-chronic liver failure than in patients without these conditions. sTREM-1 had similar accuracy to CRP identifying BI [sTREM-1: AUROC (95%CI) 0.804 (0.711-0.897), p < 0.0001; CRP: 0.791 (0.702-0.881), p < 0.0001)] among AD patients. The combination of these two molecules and the presence of ascites into a composite score significantly increased their discriminative power (AUROC: 0.878, 95%CI: 0.812-0.944, p < 0.0001). High sTREM-1 level (>660 pg/mL) was an independent predictor of 90-day mortality in patients with BI [HR: 2.941, (95%CI: 1.009-8.573), p = 0.048] in our multivariate model. CONCLUSIONS Use of sTREM-1 could increase the recognition of BIs in cirrhosis and help clinicians in mortality risk assessment of these patients.
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Affiliation(s)
- David Tornai
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary; Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Zsuzsanna Vitalis
- Department of Gastroenterology, Institute of Internal Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Alexa Jonas
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Tamas Janka
- Department of Gastroenterology, Institute of Internal Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Ildiko Foldi
- Department of Gastroenterology, Institute of Internal Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Tamas Tornai
- Department of Gastroenterology, Institute of Internal Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Nora Sipeki
- Department of Gastroenterology, Institute of Internal Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Aniko Csillag
- Department of Gastroenterology, Institute of Internal Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Boglarka Balogh
- Department of Gastroenterology, Institute of Internal Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Andrea Sumegi
- HAS-UD Vascular Biology and Myocardial Pathophysiology Research Group, Hungarian Academy of Sciences, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Roza Foldesi
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Maria Papp
- Department of Gastroenterology, Institute of Internal Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary
| | - Peter Antal-Szalmas
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt, H-4032 Debrecen, Hungary.
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Duramaz BB, Ankay N, Yesilbas O, Kihtir HS, Yozgat CY, Petmezci MT, Gedikbasi A, Sevketoglu E. Role of soluble triggering receptor expressed in myeloid cells-1 in distinguishing SIRS, sepsis, and septic shock in the pediatric intensive care unit. Arch Pediatr 2021; 28:567-572. [PMID: 34393025 DOI: 10.1016/j.arcped.2021.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 12/14/2020] [Accepted: 06/13/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Research into new markers has been intensified for early diagnosis, prognosis, and differentiation of SIRS, sepsis, and septic shock in recent years. This study aimed to investigate the role of soluble triggering receptor expressed in myeloid cells-1 (sTREM-1) and interleukin (IL)-6 in distinguishing between systemic inflammatory response syndrome (SIRS), sepsis, and septic shock in pediatric intensive care unit (PICU) patients. METHODS Between June 2014 and July 2015, 90 consecutive patients who were treated in the PICU were included in this prospective observational study. Patients were divided into four groups: control (n = 23), SIRS (n = 22), sepsis (n = 23), and septic shock (n = 22). All patients were evaluated for white blood cell (WBC), serum C-reactive protein (CRP), procalcitonin (PCT), IL-6, and sTREM-1 levels at 0, 24, and 72 h of admission. The prognostic evaluations were made using the Pediatric Risk of Mortality III (PRISM III) and Pediatric Logistic Organ Dysfunction (PELOD) scores. Patients were evaluated in terms of age, gender, prognosis, pathogen growth in culture, PRISM III and PELOD score, WBC, CRP, PCT, IL-6, and sTREM-1 levels and a comparison was made between groups. RESULTS There was no significant difference between all groups in terms of the 0-, 24-, and 72-h sTREM-1 values (p = 0.761, p = 0.360, and p = 0.822, respectively). CRP and PCT values did not differ between the septic shock, sepsis, and SIRS groups at 0, 24, and 72 h. In the septic shock group, the 0-h IL-6 value was significantly higher than that of the SIRS group (p = 0.025). The 24-h IL-6 value in the septic shock group was significantly higher than the values of the sepsis and SIRS groups (p = 0.048 and p = 0.043, respectively). No significant difference was detected between the septic shock, sepsis, and SIRS groups in terms of IL-6 values at 72 h. CONCLUSION sTREM-1 is not useful for the diagnosis of infection and for distinguishing between sepsis, septic shock, and SIRS since it does not offer a clear diagnostic value for PICU patients, unlike other reliable markers such as WBC, CRP, and PCT. Elevated IL-6 levels may indicate septic shock in PICU patients. More research on sTREM-1 is needed in this setting.
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Affiliation(s)
- Burcu Bursal Duramaz
- Department of Pediatric Infectious Diseases, University of Health Sciences, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Nermin Ankay
- Department of Pediatrics, Near East University, Lefkosa, Cyprus
| | - Osman Yesilbas
- Department of Pediatric Intensive Care Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Hasan Serdar Kihtir
- Department of Pediatric Intensive Care Medicine, Antalya Training and Research Hospital, Antalya, Turkey
| | | | - Mey Talip Petmezci
- Department of Pediatric Intensive Care Medicine, Okmeydani Training and Research Hospital, Istanbul, Turkey
| | - Asuman Gedikbasi
- Institute of Child Health Department of Pediatric Basic Sciences, Division of Medical Genetics, Istanbul University, Istabul Medical Faculty, Istanbul, Turkey
| | - Esra Sevketoglu
- Department of Pediatric Intensive Care Medicine, Bakırköy Sadi Konuk Training and Research Hospital, Istanbul, Turkey
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Hsp70 Interacts with the TREM-1 Receptor Expressed on Monocytes and Thereby Stimulates Generation of Cytotoxic Lymphocytes Active against MHC-Negative Tumor Cells. Int J Mol Sci 2021; 22:ijms22136889. [PMID: 34206968 PMCID: PMC8267615 DOI: 10.3390/ijms22136889] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/09/2021] [Accepted: 06/23/2021] [Indexed: 02/07/2023] Open
Abstract
The search for and analysis of new ligands for innate immunity receptors are of special significance for understanding the regulatory mechanisms of immune response. Here we show that the major heat shock protein 70 (Hsp70) can bind to and activate TREM-1, the innate immunity receptor expressed on monocytes. The Hsp70-TREM-1 interaction activates expression of TNFα and IFNγ mRNAs in monocytes and stimulates IL-2 secretion by PBMCs. Moreover, incubation of PBMCs with Hsp70 leads to an appearance of cytotoxic lymphocyte subpopulations active against the MHC-negative tumor cells. In addition, both the CD4+ T-lymphocytes and CD14+ monocytes are necessary for the Hsp70 signal transduction and a consequent activation of the cytotoxic lymphocytes. We believe that data presented in this study will broaden the views on the involvement of Hsp70 in the antitumor immunity.
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Ji Z, Zhang R, Yang M, Zuo W, Yao Y, Qu Y, Su Y, Liu Z, Gu Z, Ma G. Accuracy of triggering receptor expressed on myeloid cells 1 in diagnosis and prognosis of acute myocardial infarction: a prospective cohort study. PeerJ 2021; 9:e11655. [PMID: 34221733 PMCID: PMC8231339 DOI: 10.7717/peerj.11655] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/31/2021] [Indexed: 12/20/2022] Open
Abstract
Background Acute myocardial infarction (AMI) is one of the fatal cardiac emergencies. The detection of triggering receptor expressed on myeloid cells 1 (TREM1), a cell surface immunoglobulin that amplifies pro-inflammatory responses, screened by bioinformatics was shown to be significant in diagnosing and predicting the prognosis of AMI. Methods GSE66360, GSE61144 and GSE60993 were downloaded from the Gene Expression Omnibus (GEO) database to explore the differentially expressed genes (DEGs) between AMI and control groups using R software. A total of 147 patients in total were prospectively enrolled from October 2018 to June 2019 and divided into two groups, the normal group (n = 35) and the AMI group (n = 112). Plasma was collected from each patient at admission and all patients received 6-month follow-up care. Results According to bioinformatic analysis, TREM1 was an important DEG in patients with AMI. Compared with the normal group, TREM1 expression was markedly increased in the AMI group (p < 0.001). TREM1 expression was positively correlated with fasting plasma glucose (FPG), glycosylated hemoglobin (HbAC), and the number of lesion vessels, although it had no correlation with Gensini score. TREM1 expression in the triple-vessels group was significantly higher than that of the single-vessel group (p < 0.05). Multiple linear regression showed that UA and HbAC were two factors influencing TREM1 expression. The ROC curve showed that TREM1 had a diagnostic significance in AMI (p < 0.001), especially in AMI patients without diabetes. Cox regression showed increased TREM1 expression was closely associated with 6-month major adverse cardiac events (MACEs) (p < 0.001). Conclusions TREM1 is a potentially significant biomarker for the diagnosis of AMI and may be closely associated with the severity of coronary lesions and diabetes. TREM1 may also be helpful in predicting the 6-month MACEs after AMI.
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Affiliation(s)
- Zhenjun Ji
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, Jiangsu, China
| | - Rui Zhang
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, Jiangsu, China
| | - Mingming Yang
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, Jiangsu, China
| | - Wenjie Zuo
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, Jiangsu, China
| | - Yuyu Yao
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, Jiangsu, China
| | - Yangyang Qu
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, Jiangsu, China
| | - Yamin Su
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, Jiangsu, China
| | - Zhuyuan Liu
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, Jiangsu, China
| | - Ziran Gu
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, Jiangsu, China
| | - Genshan Ma
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, Jiangsu, China
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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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TREM1 rs2234237 (Thr25Ser) Polymorphism in Patients with Cutaneous Leishmaniasis Caused by Leishmania guyanensis: A Case-Control Study in the State of Amazonas, Brazil. Pathogens 2021; 10:pathogens10040498. [PMID: 33924130 PMCID: PMC8074324 DOI: 10.3390/pathogens10040498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/06/2021] [Accepted: 04/14/2021] [Indexed: 01/21/2023] Open
Abstract
Background: Leishmaniasis is an infectious disease caused by Leishmania parasites. A Th1 immune response is necessary in the acute phase to control the pathogen. The triggering receptor expressed on myeloid cells (TREM)-1 is a potent amplifier of inflammation. Our aim is to identify whether the TREM1 variant rs2234237 A/T (Thr25Ser) is associated with the disease development of cutaneous leishmaniasis (CL) in Leishmania guyanensis-infected individuals. The effects of the rs2234237 genotypes on plasma cytokines IL-1β, IL-6, IL-8, IL-10, MCP-1 and TNF-α are also investigated. Methods: 838 patients with CL and 818 healthy controls (HCs) living in the same endemic areas were genotyped by Polymerase Chain Reaction-Restriction Fragment Length Polymorphism. Plasma cytokines were assayed in 400 patients with CL and 400 HCs using the BioPlex assay. Results: The genotypes’ and alleles’ frequencies were similar in both patients with CL (AA = 618, 74%; AT = 202, 24%; TT = 18, 2%) and in HCs (AA = 580, 71%; AT = 220, 27%; TT = 18, 2%). Rs2234237 showed a modest effect on plasma IL-10 that disappeared when correction of the p-value was applied. Plasma IL-10 by rs2234237 genotypes were (mean ± SEM; AA = 2.91 pg/mL ± 0.14; AT = 2.35 pg/mL ± 0.12; TT = 3.14 pg/mL ± 0.56; p = 0.05). Conclusion: The TREM1 rs2234237 (Thr25Ser) seems to have no influence on the susceptibility or resistance to L. guyanensis infections.
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Hoang NMH, Kim S, Nguyen HD, Kim M, Kim J, Kim BC, Park D, Lee S, Yu BP, Chung HY, Kim MS. Age-Dependent Sensitivity to the Neurotoxic Environmental Metabolite, 1,2-Diacetylbenzene. Biomol Ther (Seoul) 2021; 29:399-409. [PMID: 33820880 PMCID: PMC8255141 DOI: 10.4062/biomolther.2020.208] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/13/2021] [Accepted: 02/10/2021] [Indexed: 01/15/2023] Open
Abstract
1,2-Diacetylbenzene (DAB) is a metabolite of 1,2-diethylbenzene, which is commonly used in the manufacture of plastics and gasoline. We examined the neurotoxic effects of DAB in young and old rats, particularly its effects on hippocampus. Previously, we reported DAB impairs hippocampal neurogenesis but that the underlying mechanism remained unclear. In this study, we evaluate the toxicities exhibited by DAB in the hippocampi of 6-month-old (young) and 20-month-old (old) male SD rats by treating animals intraperitoneally with DAB at 3 mg/kg/day for 1 week. Hippocampal areas were dissected from brains and RNA was extracted and subjected to RNA-seq analysis. RNA results showed animals exhibited age-dependent sensitivity to the neurotoxic effects of DAB. We observed that inflammatory pathways were up-regulated in old rats but that metabolism- and detoxification-related pathways were up-regulated in young rats. This result in old rats, especially upregulation of the TREM1 signaling pathway (an inflammatory response involved in Alzheimer’s disease (AD)) was confirmed by RT-PCR. Our study results provide a better understanding of age-dependent responses to DAB and new insight into the association between DAB and AD.
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Affiliation(s)
- Ngoc Minh Hong Hoang
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Sungjin Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Hai Duc Nguyen
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Minjo Kim
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Jin Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Byoung-Chul Kim
- Systems Toxicology Research Center, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Daeui Park
- Systems Toxicology Research Center, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Sujun Lee
- Department of Pharmacology, College of Medicine, Inje University, Busan 47392, Republic of Korea
| | - Byung Pal Yu
- Department of Physiology, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Hae Young Chung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Min-Sun Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 57922, Republic of Korea
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Kimmoun A, Duarte K, Harjola VP, Tarvasmäki T, Levy B, Mebazaa A, Gibot S. Soluble triggering receptor expressed on myeloid cells-1 is a marker of organ injuries in cardiogenic shock: results from the CardShock Study. Clin Res Cardiol 2021; 111:604-613. [PMID: 33677708 DOI: 10.1007/s00392-021-01823-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/16/2021] [Indexed: 12/01/2022]
Abstract
AIMS Optimal outcome after cardiogenic shock (CS) depends on a coordinated healing response in which both debris removal and extracellular matrix tissue repair play a crucial role. Excessive inflammation can perpetuate a vicious circle, positioning leucocytes as central protagonists and potential therapeutic targets. High levels of circulating Triggering Receptor Expressed on Myeloid cells-1 (TREM-1), were associated with death in acute myocardial infarction confirming excessive inflammation as determinant of bad outcome. The present study aims to describe the association of soluble TREM-1 with 90-day mortality and with various organ injuries in patients with CS. METHODS AND RESULTS This is a post-hoc study of CardShock, a prospective, multicenter study assessing the clinical presentation and management in patients with CS. At the time of this study, 87 patients had available plasma samples at either baseline, and/or 48 h and/or 96-120 h for soluble TREM-1 (sTREM-1) measurements. Plasma concentration of sTREM-1 was higher in 90-day non-survivors than survivors at baseline [median: 1392 IQR: (724-2128) vs. 621 (525-1233) pg/mL, p = 0.008), 48 h (p = 0.019) and 96-120 h (p = 0.029). The highest tertile of sTREM-1 at baseline (threshold: 1347 pg/mL) was associated with 90-day mortality with an unadjusted HR 3.08 CI 95% (1.48-6.42). sTREM-1 at baseline was not associated to hemodynamic parameters (heart rate, blood pressure, use of vasopressors or inotropes) but rather with organ injury markers: renal (estimated glomerular filtration rate, p = 0.0002), endothelial (bio-adrenomedullin, p = 0.018), myocardial (Suppression of Tumourigenicity 2, p = 0.002) or hepatic (bilirubin, p = 0.008). CONCLUSION In CS patients TREM-1 pathway is highly activated and gives an early prediction of vital organ injuries and outcome.
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Affiliation(s)
- Antoine Kimmoun
- Université de Lorraine, CHRU de Nancy, Médecine Intensive et Réanimation Brabois, INSERM U942 and U1116, F-CRIN-INIC RCT, Vandœuvre-lès-Nancy, France
| | - Kevin Duarte
- Université de Lorraine, CHRU de Nancy, INSERM CIC-P 1433, INSERM, F-CRIN-INI CRCT, Vandœuvre-lès-Nancy, France
| | - Veli-Pekka Harjola
- Emergency Medicine, Department of Emergency Medicine and Services, University of Helsinki, Helsinki University Hospital, Helsinki, Finland
| | - Tuukka Tarvasmäki
- Cardiology, Heart and Lung Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Bruno Levy
- Université de Lorraine, CHRU de Nancy, Médecine Intensive et Réanimation Brabois, INSERM U942 and U1116, F-CRIN-INIC RCT, Vandœuvre-lès-Nancy, France
| | - Alexandre Mebazaa
- Département d'Anesthésie et Réanimation, Université de Paris, AP-HP, CHU Lariboisière, INSERM U942, F-CRIN-INI CRCT, Paris, France
| | - Sebastien Gibot
- Université de Lorraine, CHRU de Nancy, Médecine Intensive et Réanimation Central, INSERM U1116, Nancy, France.
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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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Chu CY, Lee YC, Hsieh CH, Yeh CT, Chao TY, Chen PH, Lin IH, Hsieh TH, Shih JW, Cheng CH, Chang CC, Lin PS, Huang YL, Chen TM, Yen Y, Ann DK, Kung HJ. Genome-wide CRISPR/Cas9 knockout screening uncovers a novel inflammatory pathway critical for resistance to arginine-deprivation therapy. Theranostics 2021; 11:3624-3641. [PMID: 33664852 PMCID: PMC7914361 DOI: 10.7150/thno.51795] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 01/01/2021] [Indexed: 12/24/2022] Open
Abstract
Arginine synthesis deficiency due to the suppressed expression of ASS1 (argininosuccinate synthetase 1) represents one of the most frequently occurring metabolic defects of tumor cells. Arginine-deprivation therapy has gained increasing attention in recent years. One challenge of ADI-PEG20 (pegylated ADI) therapy is the development of drug resistance caused by restoration of ASS1 expression and other factors. The goal of this work is to identify novel factors conferring therapy resistance. Methods: Multiple, independently derived ADI-resistant clones including derivatives of breast (MDA-MB-231 and BT-549) and prostate (PC3, CWR22Rv1, and DU145) cancer cells were developed. RNA-seq and RT-PCR were used to identify genes upregulated in the resistant clones. Unbiased genome-wide CRISPR/Cas9 knockout screening was used to identify genes whose absence confers sensitivity to these cells. shRNA and CRISPR/Cas9 knockout as well as overexpression approaches were used to validate the functions of the resistant genes both in vitro and in xenograft models. The signal pathways were verified by western blotting and cytokine release. Results: Based on unbiased CRISPR/Cas9 knockout screening and RNA-seq analyses of independently derived ADI-resistant (ADIR) clones, aberrant activation of the TREM1/CCL2 axis in addition to ASS1 expression was consistently identified as the resistant factors. Unlike ADIR, MDA-MB-231 overexpressing ASS1 cells achieved only moderate ADI resistance both in vitro and in vivo, and overexpression of ASS1 alone does not activate the TREM1/CCL2 axis. These data suggested that upregulation of TREM1 is an independent factor in the development of strong resistance, which is accompanied by activation of the AKT/mTOR/STAT3/CCL2 pathway and contributes to cell survival and overcoming the tumor suppressive effects of ASS1 overexpression. Importantly, knockdown of TREM1 or CCL2 significantly sensitized ADIR toward ADI. Similar results were obtained in BT-549 breast cancer cell line as well as castration-resistant prostate cancer cells. The present study sheds light on the detailed mechanisms of resistance to arginine-deprivation therapy and uncovers novel targets to overcome resistance. Conclusion: We uncovered TREM1/CCL2 activation, in addition to restored ASS1 expression, as a key pathway involved in full ADI-resistance in breast and prostate cancer models.
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Wang Z, Chi H, Sun Y, Teng J, Feng T, Liu H, Cheng X, Ye J, Shi H, Hu Q, Jia J, Liu T, Wan L, Zhou Z, Qiao X, Yang C, Su Y. Serum sTREM-1 in adult-onset Still's disease: a novel biomarker of disease activity and a potential predictor of the chronic course. Rheumatology (Oxford) 2021; 59:3293-3302. [PMID: 32276274 PMCID: PMC7590420 DOI: 10.1093/rheumatology/keaa135] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/22/2020] [Indexed: 01/07/2023] Open
Abstract
Objectives Triggering receptor expressed on myeloid cells-1 (TREM-1) is an amplifier of inflammatory signals. Recently, a soluble form of TREM-1 (sTREM-1) was described. This study aimed to investigate the role of serum sTREM-1 in patients with adult-onset Still’s disease (AOSD). Methods Serum sTREM-1 levels were detected in 108 AOSD patients, 88 RA patients and 112 healthy controls (HC). The correlations of sTREM-1 with disease activity, clinical characteristics and laboratory parameters in AOSD patients were analysed by the Spearman correlation test. Risk factors for the chronic course of AOSD were evaluated by multivariate logistic regression analysis. Results AOSD patients had significantly higher serum sTREM-1 levels than RA patients and HC, and serum sTREM-1 levels were correlated with the systemic score, ferritin, leucocyte count, CRP, IL-1β and IL-6. The elevation in the initial sTREM-1 level by itself could discriminate patients developing the chronic course from patients developing the nonchronic course. Moreover, an elevated sTREM-1 level (> 526.4475 pg/ml) was an independent risk factor for the chronic course in active AOSD patients. Furthermore, interfering with TREM-1 engagement led to reductions in the secretion of pro-inflammatory cytokines, such as IL-1β, IL-6 and TNF-α, in neutrophils and monocytes from active AOSD patients. Conclusion Serum sTREM-1 levels are correlated with disease activity, and an elevation in the initial serum sTREM-1 level is a potential predictor of the chronic course in AOSD patients, which currently provides the best predictive model for identifying patients prone to developing the chronic course of AOSD.
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Affiliation(s)
- Zhihong Wang
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Huihui Chi
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Yue Sun
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Jialin Teng
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Tienan Feng
- Clinical Research Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Honglei Liu
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Xiaobing Cheng
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Junna Ye
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Hui Shi
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Qiongyi Hu
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Jinchao Jia
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Tingting Liu
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Liyan Wan
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Zhuochao Zhou
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Xin Qiao
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Chengde Yang
- Department of Rheumatology and Immunology, Ruijin Hospital
| | - Yutong Su
- Department of Rheumatology and Immunology, Ruijin Hospital
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Huang Z, Yang R, Zhang L, Zhu M, Zhang C, Wen J, Li H. BRD4 inhibition alleviates mechanical stress-induced TMJ OA-like pathological changes and attenuates TREM1-mediated inflammatory response. Clin Epigenetics 2021; 13:10. [PMID: 33446277 PMCID: PMC7809762 DOI: 10.1186/s13148-021-01008-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 01/07/2021] [Indexed: 12/17/2022] Open
Abstract
The aim of this paper was to investigate the protective effects of bromodomain containing 4 (BRD4) inhibition on the temporomandibular joint osteoarthritis (TMJ OA) induced by compressive mechanical stress and to explore the underlying mechanism. In vivo, a rat model of TMJ compressive loading device was used and BRD4 inhibitor was injected into the TMJ region. HE staining and micro-CT analysis were used for histological and radiographic assessment. Immunohistochemistry and qPCR were performed to detect inflammatory cytokines expressions. High-throughput ChIP-sequencing screening was performed to compare the BRD4 and H3K27ac binding patterns between condylar cartilage from control and mechanical force groups. In vitro, the mandibular condylar chondrocytes were treated with IL-1β. Small Interference RNA (siRNA) infection was used to silencing BRD4 or TREM1. qPCR was performed to detect inflammatory cytokines expressions. Our study showed that BRD4 inhibition can alleviate the thinning of condylar cartilage and subchondral bone resorption, as well as decrease the inflammatory factors expression both in vivo and in vitro. ChIP-seq analysis showed that BRD4 was more enriched in the promoter region of genes related to the stress and inflammatory pathways under mechanical stress in vivo. Trem1, a pro-inflammatory gene, was screened out from the overlapped BRD4 and H3K27ac increased binding sites, and Trem1 mRNA was found to be regulated by BRD4 inhibition both in vivo and in vitro. TREM1 inhibition reduced the expression of inflammatory factors induced by IL-1β in vitro. In summary, we concluded that BRD4 inhibition can protect TMJ OA-like pathological changes induced by mechanical stress and attenuate TREM1-mediated inflammatory response.
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Affiliation(s)
- Ziwei Huang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Ren Yang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Lu Zhang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Mengjiao Zhu
- Department of Orthodontics, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Caixia Zhang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Juan Wen
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Huang Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, 30 Central Road, Nanjing, 210008, China.
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Potentiation of NETs release is novel characteristic of TREM-1 activation and the pharmacological inhibition of TREM-1 could prevent from the deleterious consequences of NETs release in sepsis. Cell Mol Immunol 2021; 18:452-460. [PMID: 33420354 PMCID: PMC8026640 DOI: 10.1038/s41423-020-00591-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 11/08/2020] [Indexed: 12/27/2022] Open
Abstract
During sepsis, neutrophil activation induces endothelial cell (EC) dysfunction partly through neutrophil extracellular trap (NET) release. The triggering receptor expressed on myeloid cell-1 (TREM-1) is an orphan immune receptor that amplifies the inflammatory response mediated by Toll-like receptor-4 (TLR4) engagement. Although the key role of TLR4 signaling in NETosis is known, the role of TREM-1 in this process has not yet been investigated. Here, we report that TREM-1 potentiates NET release by human and murine neutrophils and is a component of the NET structure. In contrast, pharmacologic inhibition or genetic ablation of TREM-1 decreased NETosis in vitro and during experimental septic shock in vivo. Moreover, isolated NETs were able to activate ECs and impair vascular reactivity, and these deleterious effects were dampened by TREM-1 inhibition. TREM-1 may, therefore, constitute a new therapeutic target to prevent NETosis and associated endothelial dysfunction.
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Serum Levels of Soluble Triggering Receptor Expressed on Myeloid Cells-1 Associated with the Severity and Outcome of Acute Ischemic Stroke. J Clin Med 2020; 10:jcm10010061. [PMID: 33375339 PMCID: PMC7795761 DOI: 10.3390/jcm10010061] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/14/2020] [Accepted: 12/22/2020] [Indexed: 12/15/2022] Open
Abstract
Stroke is a neurological emergency, where the mechanism of the blood supply to the brain is impaired, resulting in brain cell ischemia and death. Neuroinflammation is a key component in the ischemic cascade that results in cell damage and death after cerebral ischemia. The triggering receptor expressed on myeloid cells-1 (TREM-1) modulates neuroinflammation after acute ischemic stroke. In the present study, 60 patients with acute ischemic stroke, who had been subjected to neurological examinations and National Institutes of Health Stroke Scale (NIHSS) and brain magnetic resonance imaging studies, were enrolled in the emergency room of Kaohsiung Chang Gung Memorial Hospital. Twenty-four healthy volunteers were recruited as controls. The serum levels of soluble TREM-1 (sTREM-1), human S100 calcium-binding protein B (S100B), and proinflammatory cytokines and chemokines, including tumor necrosis α (TNF-α), interleukin 1β, interleukin 6 (IL-6), interleukin 8, and interferon-γ were measured immediately after acute ischemic stroke. The serum levels of sTREM-1, TNFα, IL-6, and S100B were correlated with the stroke volume and NIHSS, after acute ischemic stroke. Additionally, the serum levels of sTREM-1 were significantly positively correlated with S100B. The functional outcomes were evaluated 6 months after ischemic stroke by the Barthel index, which was correlated with the age and levels of sTREM-1 and S100B. We suggest that acute ischemic stroke induces neuroinflammation by the activation of the TREM-1 signaling pathway and the downstream inflammatory machinery that modulates the inflammatory response and ischemic neuronal cell death. From a translational perspective, our results may allow for the development of a new therapeutic strategy for acute ischemic stroke by targeting the TREM-1 signaling pathway.
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Lemoine L, Dieckmann R, Al Dahouk S, Vincze S, Luch A, Tralau T. Microbially competent 3D skin: a test system that reveals insight into host-microbe interactions and their potential toxicological impact. Arch Toxicol 2020; 94:3487-3502. [PMID: 32681188 PMCID: PMC7502063 DOI: 10.1007/s00204-020-02841-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 07/09/2020] [Indexed: 02/06/2023]
Abstract
The skin`s microbiome is predominantly commensalic, harbouring a metabolic potential far exceeding that of its host. While there is clear evidence that bacteria-dependent metabolism of pollutants modulates the toxicity for the host there is still a lack of models for investigating causality of microbiome-associated pathophysiology or toxicity. We now report on a biologically characterised microbial-skin tissue co-culture that allows studying microbe-host interactions for extended periods of time in situ. The system is based on a commercially available 3D skin model. In a proof-of-concept, this model was colonised with single and mixed cultures of two selected skin commensals. Two different methods were used to quantify the bacteria on the surface of the skin models. While Micrococcus luteus established a stable microbial-skin tissue co-culture, Pseudomonas oleovorans maintained slow continuous growth over the 8-day cultivation period. A detailed skin transcriptome analysis showed bacterial colonisation leading to up to 3318 significant changes. Additionally, FACS, ELISA and Western blot analyses were carried out to analyse secretion of cytokines and growth factors. Changes found in colonised skin varied depending on the bacterial species used and comprised immunomodulatory functions, such as secretion of IL-1α/β, Il-6, antimicrobial peptides and increased gene transcription of IL-10 and TLR2. The colonisation also influenced the secretion of growth factors such as VFGFA and FGF2. Notably, many of these changes have already previously been associated with the presence of skin commensals. Concomitantly, the model gained first insights on the microbiome's influence on skin xenobiotic metabolism (i.e., CYP1A1, CYP1B1 and CYP2D6) and olfactory receptor expression. The system provides urgently needed experimental access for assessing the toxicological impact of microbiome-associated xenobiotic metabolism in situ.
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Affiliation(s)
- Lisa Lemoine
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany.
- Department of Biology, Chemistry, Pharmacy, Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany.
| | - Ralf Dieckmann
- Department of Biological Safety, German Federal Institute for Risk Assessment (BfR), Diedersdorfer Weg 1, 12277, Berlin, Germany
| | - Sascha Al Dahouk
- Department of Biological Safety, German Federal Institute for Risk Assessment (BfR), Diedersdorfer Weg 1, 12277, Berlin, Germany
| | - Szilvia Vincze
- Department of Biological Safety, German Federal Institute for Risk Assessment (BfR), Diedersdorfer Weg 1, 12277, Berlin, Germany
| | - Andreas Luch
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
- Department of Biology, Chemistry, Pharmacy, Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Tewes Tralau
- Department of Food Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
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TREM-1 Exacerbates Neuroinflammatory Injury via NLRP3 Inflammasome-Mediated Pyroptosis in Experimental Subarachnoid Hemorrhage. Transl Stroke Res 2020; 12:643-659. [PMID: 32862402 DOI: 10.1007/s12975-020-00840-x] [Citation(s) in RCA: 126] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 06/04/2020] [Accepted: 08/13/2020] [Indexed: 12/22/2022]
Abstract
Neuroinflammation contributes to the pathogenesis of early brain injury induced by subarachnoid hemorrhage (SAH). Previous reports have demonstrated that triggering receptor expressed on myeloid cells 1 (TREM-1) regulates inflammatory response caused by ischemic stroke or myocardial infarction. However, whether TREM-1 could modulate neuroinflammation after SAH remains largely unknown. Here, using a mouse model of SAH, we found that the expression of TREM-1 was mainly located in microglia cells and increased to peak at 24 h following SAH. Then, TREM-1 antagonist or mimic was intranasally administrated to investigate its effect on SAH. TREM-1 inhibition with LP17 improved neurological deficits, mitigated brain water content, and preserved brain-blood barrier integrity 24 h after SAH, whereas recombinant TREM-1, a mimic of TREM-1, deteriorated these outcomes. In addition, LP17 administration restored long-term sensorimotor coordination and cognitive deficits. Pharmacological blockade of TREM-1 reduced TUNEL-positive and FJC-positive neurons, and CD68-stained microglia in ipsilateral cerebral cortex. Neutrophil invasion was inhibited as protein level of myeloperoxidase (MPO), and MPO-positive cells were both decreased. Moreover, we found that LP17 treatment ameliorated microglial pyroptosis by diminishing levels of N-terminal fragment of GSDMD (GSDMD-N) and IL-1β production. Mechanistically, both in vivo and in vitro, we depicted that TREM-1 can trigger microglial pyroptosis via activating NLRP3 inflammasome. In conclusion, our results revealed the critical role of TREM-1 in neuroinflammation following SAH, suggesting that TREM-1 inhibition might be a potential therapeutic approach for SAH.
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Dubar M, Frippiat JP, Remen T, Boufenzer A, Alauzet C, Baumann C, Gibot S, Bisson C. Comparison of sTREM-1 and associated periodontal and bacterial factors before/after periodontal therapy, and impact of psychosocial factors. J Clin Periodontol 2020; 47:1064-1078. [PMID: 32602969 DOI: 10.1111/jcpe.13339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 05/11/2020] [Accepted: 06/18/2020] [Indexed: 01/11/2023]
Abstract
AIM The immune receptor triggering receptor expressed on myeloid cell-1 (TREM-1) is responsible for an amplification of the immuno-inflammatory response in inflammatory diseases. Its role in the aetiopathogenesis of periodontitis is underexplored. The aim of this case-control and before-after study was to determine the evolution of soluble form of TREM-1 (sTREM-1) concentrations after scaling and root planing (SRP), and its prognostic value and evaluate associated microbial, periodontal and psychosocial factors. METHODS Gingival crevicular fluid was collected in two pathological sites (periodontal pocket depth (PPD) ≥ 5 mm) and one healthy site (PPD ≤ 3 mm) from thirty periodontitis patients (before/after SRP), and in one healthy site from thirty controls (patients without periodontal disease). Each patient filled-in stress/anxiety self-assessment questionnaires and provided a saliva sample. Diseased patients were followed for a total of 13-15 weeks in initial periodontal treatment. sTREM-1 and salivary cortisol levels were determined by ELISA and periodontopathogens by PCR. RESULTS Before SRP, higher crevicular sTREM-1 levels were positively associated with some increased clinical parameters (Plaque Index, tooth mobility, bleeding on probing, p < .05) and inversely with Aggregatibacter actinomycetemcomitans abundance (p = .03). No correlation with psychological factors nor cortisol was found with salivary sTREM-1 concentrations. After SRP, crevicular sTREM-1 levels decreased (p < .001) and were not linked to a PPD decrease but remained higher in pathological than in healthy sites (p < .001). Higher concentrations were also found out in unimproved sites (no change or increase in PPD) compared to improved ones (p = .02). Higher sTREM-1 levels were associated with Porphyromonas gingivalis, Treponema denticola and Campylobacter rectus in pathological sites after SRP (p < .05). CONCLUSION Crevicular sTREM-1 level decreased after SRP but did not appear to be a site outcome predictive factor of periodontal healing and remained an inflammatory parameter.
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Affiliation(s)
- Marie Dubar
- Department of Periodontology, School of Dentistry, Lille University Hospital, Lille, France.,Laboratory of Stress Immunity Pathogens, EA 7300, Faculty of Medicine, University of Lorraine, Vandoeuvre-lès-Nancy, France
| | - Jean-Pol Frippiat
- Laboratory of Stress Immunity Pathogens, EA 7300, Faculty of Medicine, University of Lorraine, Vandoeuvre-lès-Nancy, France
| | - Thomas Remen
- Clinical Research Support Facility PARC, UMDS, Nancy University Hospital, Vandoeuvre-lès-Nancy, France
| | | | - Corentine Alauzet
- Laboratory of Stress Immunity Pathogens, EA 7300, Faculty of Medicine, University of Lorraine, Vandoeuvre-lès-Nancy, France.,Laboratory of Bacteriology, Nancy University Hospital, University of Lorraine, Vandoeuvre-Lès-Nancy, France
| | - Cedric Baumann
- Clinical Research Support Facility PARC, UMDS, Nancy University Hospital, Vandoeuvre-lès-Nancy, France
| | - Sebastien Gibot
- Medical Intensive Care Unit, Hôpital Central, Nancy University Hospital, Nancy, France.,Department de Periodontology, Nancy University Hospital, University of Lorraine, Nancy, France
| | - Catherine Bisson
- Laboratory of Stress Immunity Pathogens, EA 7300, Faculty of Medicine, University of Lorraine, Vandoeuvre-lès-Nancy, France.,Department of Periodontology, University Hospital and University of Lorraine, Nancy, France
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Diagnostic and Prognostic Value of IL-6 and sTREM-1 in SIRS and Sepsis in Children. Mediators Inflamm 2020; 2020:8201585. [PMID: 32655314 PMCID: PMC7327583 DOI: 10.1155/2020/8201585] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/22/2020] [Accepted: 06/06/2020] [Indexed: 12/25/2022] Open
Abstract
Purpose The aim of this study was to evaluate the diagnostic and prognostic value of IL-6 and sTREM-1 in the course of SIRS and sepsis in children with reference to routinely used CRP and PCT. Methods A prospective study included 180 patients at the ages from 2 months to 18 years hospitalized due to fever from November 2015 to January 2017. Forty-nine children without fever hospitalized due to noninfectious causes formed the control group. IL-6 and sTREM-1 serum concentrations were assessed with the enzyme-linked immunosorbent assay method. Results The mean serum concentrations of all the analyzed biomarkers were statistically significantly higher in the study group compared to the control group. Mean IL-6, sTREM-1, and PCT serum concentrations were statistically significantly higher in the group of patients with SIRS/sepsis compared to the group of feverish patients without diagnosed SIRS (N-SIRS). Based on the ROC curve analysis, it was shown that of all the biomarkers tested, only two—IL-6 and procalcitonin—had potential usefulness in the diagnosis of SIRS/sepsis in children with fever. Conclusion Elevated levels of IL-6 and PCT are important risk factors for the development of SIRS/sepsis in children with fever. It seems that elevated IL-6 baseline serum level may predict a more severe course of febrile illness in children, because based on the ROC curve analysis, it was found that IL-6 is a statistically significant prognostic marker of prolonged fever ≥ 3 days and prolonged hospitalization > 10 days. The assessment of the usefulness of sTREM-1 in the diagnosis of SIRS/sepsis in feverish children requires further research.
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Raggi F, Bosco MC. Targeting Mononuclear Phagocyte Receptors in Cancer Immunotherapy: New Perspectives of the Triggering Receptor Expressed on Myeloid Cells (TREM-1). Cancers (Basel) 2020; 12:cancers12051337. [PMID: 32456204 PMCID: PMC7281211 DOI: 10.3390/cancers12051337] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/18/2020] [Accepted: 05/22/2020] [Indexed: 12/14/2022] Open
Abstract
Inflammatory cells are major players in the onset of cancer. The degree of inflammation and type of inflammatory cells in the tumor microenvironment (TME) are responsible for tilting the balance between tumor progression and regression. Cancer-related inflammation has also been shown to influence the efficacy of conventional therapy. Mononuclear phagocytes (MPs) represent a major component of the inflammatory circuit that promotes tumor progression. Despite their potential to activate immunosurveillance and exert anti-tumor responses, MPs are subverted by the tumor to support its growth, immune evasion, and spread. MP responses in the TME are dictated by a network of stimuli integrated through the cross-talk between activatory and inhibitory receptors. Alterations in receptor expression/signaling can create excessive inflammation and, when chronic, promote tumorigenesis. Research advances have led to the development of new therapeutic strategies aimed at receptor targeting to induce a tumor-infiltrating MP switch from a cancer-supportive toward an anti-tumor phenotype, demonstrating efficacy in different human cancers. This review provides an overview of the role of MP receptors in inflammation-mediated carcinogenesis and discusses the most recent updates regarding their targeting for immunotherapeutic purposes. We focus in particular on the TREM-1 receptor, a major amplifier of MP inflammatory responses, highlighting its relevance in the development and progression of several types of inflammation-associated malignancies and the promises of its inhibition for cancer immunotherapy.
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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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Chang W, Peng F, Meng SS, Xu JY, Yang Y. Diagnostic value of serum soluble triggering expressed receptor on myeloid cells 1 (sTREM-1) in suspected sepsis: a meta-analysis. BMC Immunol 2020; 21:2. [PMID: 31931717 PMCID: PMC6958609 DOI: 10.1186/s12865-020-0332-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 01/07/2020] [Indexed: 02/07/2023] Open
Abstract
Background We aim to synthesize the up-to-date studies to investigate the diagnostic value of serum soluble triggering expressed receptor on myeloid cells 1 (sTREM-1) in suspected sepsis. Results A total of 19 studies with 2418 patients were finally enrolled in the meta-analysis. The pooled sensitivity was 0.82 (95% CI 0.73 to 0.89), specificity 0.81 (95% CI 0.75 to 0.86), positive likelihood ratio 4.3 (95% CI 3.02 to 6.12), negative likelihood ratio 0.22 (95% CI 0.24 to 0.35), diagnostic odds ratio 20 (95% CI 9 to 41) and AuROC 0.88 (95% CI 0.85 to 0.91). The meta-regression analysis revealed that the sample size, reference standard description, prevalence of sepsis in the trials and consecution of patient recruitment might be the source of heterogeneity. Conclusions The serum sTREM-1 had a moderate ability in diagnosis in suspected sepsis based on the current studies. However, more large-scale studies were needed to further evaluate the diagnostic accuracy of sTREM-1.
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Affiliation(s)
- Wei Chang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Fei Peng
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Shan-Shan Meng
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Jing-Yuan Xu
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Yi Yang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China.
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