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Ma J, Fu L, Lu Z, Sun Y. Evaluating the Causal Effects of Circulating Proteome on the Risk of Sepsis and Related Outcomes. ACS OMEGA 2024; 9:23864-23872. [PMID: 38854583 PMCID: PMC11154893 DOI: 10.1021/acsomega.4c01934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 05/09/2024] [Accepted: 05/17/2024] [Indexed: 06/11/2024]
Abstract
The current investigation deployed Mendelian randomization (MR) to elucidate the causal relationship between circulating proteins and sepsis. A rigorous two-sample MR analysis evaluated the effect of plasma proteins on the sepsis susceptibility. To affirm the integrity of MR findings, a suite of supplementary analyses, including Bayesian colocalization, Steiger filtering, the assessment of protein-altering polymorphisms, and the correlation between expression quantitative trait loci and protein quantitative trait loci (pQTLs), was employed. The study further integrated the examination of protein-protein interactions and pathway enrichment, along with the identification of pharmacologically actionable targets, to advance our comprehension and outline potential sepsis therapies. Subsequent analyses leveraging cis-pQTLs within MR studies unveiled noteworthy relationships: 94 specific proteins exhibited significant links with sepsis-related 28 day mortality, while 96 distinct proteins correlated with survival outcomes in sepsis. Furthermore, incorporating both cis- and trans-pQTLs in MR investigations revealed more comprehensive findings, associating 201 unique proteins with sepsis-related 28 day mortality and 199 distinct proteins with survival outcomes in sepsis. Markedly, colocalization analyses confirmed that eight of these proteins exhibited prominent evidence for colocalization, emphasizing their potential criticality in sepsis pathophysiology. Further in silico analyses were conducted to delineate putative regulatory networks and to highlight prospective drug targets among these proteins. Employing the MR methodology has shed light on plasma proteins implicated in the etiopathogenesis of sepsis. This novel approach unveiled numerous biomarkers and targets, providing a scientific rationale for the development of new therapeutic strategies and prophylactic measures against sepsis.
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Affiliation(s)
- Jiawei Ma
- The
First Department of Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
- Department
of Critical Care Medicine, Wuxi No. 2 People’s
Hospital, Wuxi 214002, China
- Department
of Critical Care Medicine, Aheqi County
People’s Hospital, Xinjiang 843599, China
| | - Lu Fu
- The
First Department of Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Zhonghua Lu
- The
First Department of Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Yun Sun
- The
First Department of Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
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2
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Tao L, Zhu Y, Wu L, Liu J. Comprehensive analysis of senescence-associated genes in sepsis based on bulk and single-cell sequencing data. Front Mol Biosci 2024; 10:1322221. [PMID: 38259686 PMCID: PMC10801732 DOI: 10.3389/fmolb.2023.1322221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
Background: Sepsis is a pathological state resulting from dysregulated immune response in host during severe infection, leading to persistent organ dysfunction and ultimately death. Senescence-associated genes (SAGs) have manifested their potential in controlling the proliferation and dissemination of a variety of diseases. Nevertheless, the correlation between sepsis and SAGs remains obscure and requires further investigation. Methods: Two RNA expression datasets (GSE28750 and GSE57065) specifically related to sepsis were employed to filter hub SAGs, based on which a diagnostic model predictive of the incidence of sepsis was developed. The association between the expression of the SAGs identified and immune-related modules was analyzed employing Cell-type Identification By Estimating Relative Subsets Of RNA Transcripts (CIBERSORT) and Microenvironment Cell Populations-counter (MCP-counter) analysis. The identified genes in each cohort were clustered by unsupervised agreement clustering analysis and weighted gene correlation network analysis (WGCNA). Results: A diagnostic model for sepsis established based on hub genes (IGFBP7, GMFG, IL10, IL18, ETS2, HGF, CD55, and MMP9) exhibited a strong clinical reliability (AUC = 0.989). Sepsis patients were randomly assigned and classified by WGCNA into two clusters with distinct immune statuses. Analysis on the single-cell RNA sequencing (scRNA-seq) data revealed high scores of SAGs in the natural killer (NK) cells of the sepsis cohort than the healthy cohort. Conclusion: These findings suggested a close association between SAGs and sepsis alterations. The identified hub genes had potential to serve as a viable diagnostic marker for sepsis.
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Affiliation(s)
- Linfeng Tao
- Gusu School of Nanjing Medical University, Department of Critical Care Medicine, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou Clinical Medical Center of Critical Care Medicine, Suzhou, China
| | - Yue Zhu
- Department of Breast and Thyroid Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China
| | - Lifang Wu
- Department of Critical Care Medicine of Kunshan Third People’s Hospital, Suzhou, China
| | - Jun Liu
- Gusu School of Nanjing Medical University, Department of Critical Care Medicine, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou Clinical Medical Center of Critical Care Medicine, Suzhou, China
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3
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Jeong D, Woo YD, Chung DH. Invariant natural killer T cells in lung diseases. Exp Mol Med 2023; 55:1885-1894. [PMID: 37696892 PMCID: PMC10545712 DOI: 10.1038/s12276-023-01024-x] [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: 03/08/2023] [Accepted: 04/12/2023] [Indexed: 09/13/2023] Open
Abstract
Invariant natural killer T (iNKT) cells are a subset of T cells that are characterized by a restricted T-cell receptor (TCR) repertoire and a unique ability to recognize glycolipid antigens. These cells are found in all tissues, and evidence to date suggests that they play many immunological roles in both homeostasis and inflammatory conditions. The latter include lung inflammatory diseases such as asthma and infections: the roles of lung-resident iNKT cells in these diseases have been extensively researched. Here, we provide insights into the biology of iNKT cells in health and disease, with a particular focus on the role of pulmonary iNKT cells in airway inflammation and other lung diseases.
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Affiliation(s)
- Dongjin Jeong
- Laboratory of Immune Regulation in Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Yeon Duk Woo
- Laboratory of Immune Regulation in Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Doo Hyun Chung
- Laboratory of Immune Regulation in Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea.
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea.
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4
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Gálvez NMS, Bohmwald K, Pacheco GA, Andrade CA, Carreño LJ, Kalergis AM. Type I Natural Killer T Cells as Key Regulators of the Immune Response to Infectious Diseases. Clin Microbiol Rev 2021; 34:e00232-20. [PMID: 33361143 PMCID: PMC7950362 DOI: 10.1128/cmr.00232-20] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The immune system must work in an orchestrated way to achieve an optimal response upon detection of antigens. The cells comprising the immune response are traditionally divided into two major subsets, innate and adaptive, with particular characteristics for each type. Type I natural killer T (iNKT) cells are defined as innate-like T cells sharing features with both traditional adaptive and innate cells, such as the expression of an invariant T cell receptor (TCR) and several NK receptors. The invariant TCR in iNKT cells interacts with CD1d, a major histocompatibility complex class I (MHC-I)-like molecule. CD1d can bind and present antigens of lipid nature and induce the activation of iNKT cells, leading to the secretion of various cytokines, such as gamma interferon (IFN-γ) and interleukin 4 (IL-4). These cytokines will aid in the activation of other immune cells following stimulation of iNKT cells. Several molecules with the capacity to bind to CD1d have been discovered, including α-galactosylceramide. Likewise, several molecules have been synthesized that are capable of polarizing iNKT cells into different profiles, either pro- or anti-inflammatory. This versatility allows NKT cells to either aid or impair the clearance of pathogens or to even control or increase the symptoms associated with pathogenic infections. Such diverse contributions of NKT cells to infectious diseases are supported by several publications showing either a beneficial or detrimental role of these cells during diseases. In this article, we discuss current data relative to iNKT cells and their features, with an emphasis on their driving role in diseases produced by pathogenic agents in an organ-oriented fashion.
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Affiliation(s)
- Nicolás M S Gálvez
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Karen Bohmwald
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gaspar A Pacheco
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Catalina A Andrade
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Leandro J Carreño
- Millennium Institute on Immunology and Immunotherapy, Programa de Inmunología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Alexis M Kalergis
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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5
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Lu Y, Yang Y, Peng Z, Xie L, Zhong X, Liang F, Yuan C, Lu B. Silencing IFNγ inhibits A1 astrocytes and attenuates neurogenesis decline and cognitive impairment in endotoxemia. Biochem Biophys Res Commun 2020; 533:1519-1526. [PMID: 33158480 DOI: 10.1016/j.bbrc.2020.10.084] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 10/26/2020] [Indexed: 11/30/2022]
Abstract
Cognitive impairment, acute or long-term, is a common complication in patients with severe bacterial infection. However, the underlying mechanisms are not fully verified and effective medicine is not available in clinics. Interferon gamma (IFNγ) is a pivotal cytokine against infection and is believed to be a tune in homeostasis of cognitive function. Here, we collected blood and cerebrospinal fluid (CF) from human subjects and mice, and found that plasma and CF levels of IFNγ were significantly increased in septic patients and endotoxin-challenged mice when compared with healthy controls. IFNγ signaling was boosted in the hippocampus of mice after a challenge of lipopolysaccharide (LPS), which was accompanied with cognitive impairment and decline of neurogenesis. Deficiency of IFNγ or its receptor (IFNγR) dramatically attenuated microglia-induced A1 astrocytes and consequently restored neurogenesis and cognitive function in endotoxemia mice model. Using primary microglia, astrocytes and neurons, we found that IFNγ remarkably increased LPS-mediated release of TNFα and IL-1α in microglia and consequently induced the transformation of astrocyte to A1 subtype, which ultimately resulted in neuron damage. Thus, IFNγ promotes cognitive impairment in endotoxemia by enhancing microglia-induced A1 astrocytes. Targeting IFNγ would be a novel strategy for preventing or treating cognitive dysfunction in patients with Gram-negative infection.
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Affiliation(s)
- Yanyan Lu
- Department of Hematology, The 3rd Xiangya Hospital, Central South University, Changsha, 410000, PR China
| | - Yanliang Yang
- Department of Hematology, The 3rd Xiangya Hospital, Central South University, Changsha, 410000, PR China
| | - Zhouyangfan Peng
- Department of Hematology, The 3rd Xiangya Hospital, Central South University, Changsha, 410000, PR China
| | - Lingli Xie
- Department of Hematology, The 3rd Xiangya Hospital, Central South University, Changsha, 410000, PR China; Department of Pathophysiology, Hunan University of Chinese Medicine, Changsha, 410000, PR China
| | - Xiaoli Zhong
- Department of Hematology, The 3rd Xiangya Hospital, Central South University, Changsha, 410000, PR China
| | - Fang Liang
- Department of Hematology, The 3rd Xiangya Hospital, Central South University, Changsha, 410000, PR China
| | - Chuang Yuan
- Department of Hematology, The 3rd Xiangya Hospital, Central South University, Changsha, 410000, PR China.
| | - Ben Lu
- Department of Hematology, The 3rd Xiangya Hospital, Central South University, Changsha, 410000, PR China; Department of Pathophysiology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, 410000, PR China; Key Laboratory of Sepsis Translational Medicine of Hunan, Central South University, Changsha, Hunan Province, 410000, PR China.
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6
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Crosstalk between Dendritic Cells and Immune Modulatory Agents against Sepsis. Genes (Basel) 2020; 11:genes11030323. [PMID: 32197507 PMCID: PMC7140865 DOI: 10.3390/genes11030323] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/06/2020] [Accepted: 03/16/2020] [Indexed: 12/22/2022] Open
Abstract
Dendritic cells (DCs) play a critical role in the immune system which sense pathogens and present their antigens to prime the adaptive immune responses. As the progression of sepsis occurs, DCs are capable of orchestrating the aberrant innate immune response by sustaining the Th1/Th2 responses that are essential for host survival. Hence, an in-depth understanding of the characteristics of DCs would have a beneficial effect in overcoming the obstacle occurring in sepsis. This paper focuses on the role of DCs in the progression of sepsis and we also discuss the reverse sepsis-induced immunosuppression through manipulating the DC function. In addition, we highlight some potent immunotherapies that could be used as a novel strategy in the early treatment of sepsis.
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7
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Increased TLR4 Expression Aggravates Sepsis by Promoting IFN- γ Expression in CD38 -/- Mice. J Immunol Res 2019; 2019:3737890. [PMID: 30915370 PMCID: PMC6399547 DOI: 10.1155/2019/3737890] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/07/2018] [Accepted: 12/02/2018] [Indexed: 12/23/2022] Open
Abstract
Gram-negative bacterial sepsis accounts for up to 50% worldwide sepsis that causes hospital mortality. Acute kidney injury (AKI), a common complication of Gram-negative bacterial sepsis, is caused by Toll-like receptor 4 (TLR4) activation. Lipopolysaccharide (LPS) is an endotoxin in Gram-negative bacteria and is recognized specifically by TLR4, which initiates innate immune response. Also, TLR4 signaling pathway activation is essential in response to LPS infection. CD38 is one of the well-known regulators of innate immunity, whose dysregulation contributes to sepsis. Many studies have proven that an attenuated Gram-positive bacterium induces sepsis in a CD38-blocking model. However, the pathogenesis of Gram-negative bacteria-induced sepsis in a CD38−/− mouse model remains unclear. The aim of this study is to investigate whether kidney injury is still attenuated in a LPS-induced CD38−/− sepsis model and identify the potential mechanism. We assess the severity of kidney injury related to proinflammatory cytokine expressions (IFN-γ, TNF-α, IL-1β, and IL-6) in WT and CD38−/− mice. Our results showed more aggravated kidney damage in CD38−/− mice than in WT mice, accompanied with an increase of proinflammatory cytokine expression. In addition, compared with CD38−/−TLR4mut mice, we found an increase of TLR4 expression and mRNA expression of these cytokines in the kidney of CD38−/− mice, although only increased IFN-γ level was detected in the serum. Taken together, these results demonstrated that an increased TLR4 expression in CD38−/− mice could contribute to the aggravation of AKI through boosting of the production of IFN-γ.
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8
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Kim EY, Oldham WM. Innate T cells in the intensive care unit. Mol Immunol 2019; 105:213-223. [PMID: 30554082 PMCID: PMC6331274 DOI: 10.1016/j.molimm.2018.09.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/22/2018] [Accepted: 09/29/2018] [Indexed: 12/15/2022]
Abstract
Rapid onset of acute inflammation is a hallmark of critical illnesses that bring patients to the intensive care unit (ICU). In critical illness, innate T cells rapidly reach full activation and drive a robust acute inflammatory response. As "cellular adjuvants," innate T cells worsen inflammation and mortality in several common critical illnesses including sepsis, ischemia-reperfusion injury, stroke, and exacerbations of respiratory disease. Interestingly, innate T cell subsets can also promote a protective and anti-inflammatory response in sepsis, ischemia-reperfusion injury, and asthma. Therapies that target innate T cells have been validated in several models of critical illness. Here, we review the role of natural killer T (NKT) cells, mucosal-associated invariant T (MAIT) cells and γδ T cells in clinical and experimental critical illness.
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Affiliation(s)
- Edy Yong Kim
- Brigham and Women's Hospital, Pulmonary and Critical Care Medicine, Boston, MA, 02115, United States; Harvard Medical School, Boston, MA, 02115, United States.
| | - William M Oldham
- Brigham and Women's Hospital, Pulmonary and Critical Care Medicine, Boston, MA, 02115, United States; Harvard Medical School, Boston, MA, 02115, United States
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9
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Imbrechts M, Avau A, Vandenhaute J, Malengier-Devlies B, Put K, Mitera T, Berghmans N, Burton O, Junius S, Liston A, de Somer L, Wouters C, Matthys P. Insufficient IL-10 Production as a Mechanism Underlying the Pathogenesis of Systemic Juvenile Idiopathic Arthritis. THE JOURNAL OF IMMUNOLOGY 2018; 201:2654-2663. [PMID: 30266771 DOI: 10.4049/jimmunol.1800468] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 08/24/2018] [Indexed: 12/22/2022]
Abstract
Systemic juvenile idiopathic arthritis (sJIA) is a childhood-onset immune disorder of unknown cause. One of the concepts is that the disease results from an inappropriate control of immune responses to an initially harmless trigger. In the current study, we investigated whether sJIA may be caused by defects in IL-10, a key cytokine in controlling inflammation. We used a translational approach, with an sJIA-like mouse model and sJIA patient samples. The sJIA mouse model relies on injection of CFA in IFN-γ-deficient BALB/c mice; corresponding wild type (WT) mice only develop a subtle and transient inflammatory reaction. Diseased IFN-γ-deficient mice showed a defective IL-10 production in CD4+ regulatory T cells, CD19+ B cells, and CD3-CD122+CD49b+ NK cells, with B cells as the major source of IL-10. In addition, neutralization of IL-10 in WT mice resulted in a chronic immune inflammatory disorder clinically and hematologically reminiscent of sJIA. In sJIA patients, IL-10 plasma levels were strikingly low as compared with proinflammatory mediators. Furthermore, CD19+ B cells from sJIA patients showed a decreased IL-10 production, both ex vivo and after in vitro stimulation. In conclusion, IL-10 neutralization in CFA-challenged WT mice converts a transient inflammatory reaction into a chronic disease and represents an alternative model for sJIA in IFN-γ-competent mice. Cell-specific IL-10 defects were observed in sJIA mice and patients, together with an insufficient IL-10 production to counterbalance their proinflammatory cytokines. Our data indicate that a defective IL-10 production contributes to the pathogenesis of sJIA.
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Affiliation(s)
- Maya Imbrechts
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Anneleen Avau
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Jessica Vandenhaute
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Bert Malengier-Devlies
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Karen Put
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Tania Mitera
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Nele Berghmans
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Oliver Burton
- KU Leuven, Laboratory of Genetics of Autoimmunity, VIB Center for Brain and Disease Research, 3000 Leuven, Belgium; and
| | - Steffie Junius
- KU Leuven, Laboratory of Genetics of Autoimmunity, VIB Center for Brain and Disease Research, 3000 Leuven, Belgium; and
| | - Adrian Liston
- KU Leuven, Laboratory of Genetics of Autoimmunity, VIB Center for Brain and Disease Research, 3000 Leuven, Belgium; and
| | - Lien de Somer
- University Hospital Leuven, Laboratory of Pediatric Immunology, 3000 Leuven, Belgium
| | - Carine Wouters
- University Hospital Leuven, Laboratory of Pediatric Immunology, 3000 Leuven, Belgium
| | - Patrick Matthys
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium;
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10
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Imbrechts M, De Samblancx K, Fierens K, Brisse E, Vandenhaute J, Mitera T, Libert C, Smets I, Goris A, Wouters C, Matthys P. IFN-γ stimulates CpG-induced IL-10 production in B cells via p38 and JNK signalling pathways. Eur J Immunol 2018; 48:1506-1521. [DOI: 10.1002/eji.201847578] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/28/2018] [Accepted: 06/30/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Maya Imbrechts
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
| | | | - Karlien Fierens
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
| | - Ellen Brisse
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
| | | | - Tania Mitera
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
| | - Claude Libert
- VIB Center for Inflammation Research; Ghent Belgium
- Department of Biomedical Molecular Biology; Ghent University; Ghent Belgium
| | - Ide Smets
- KU Leuven; Department of Neurosciences; Laboratory for Neuroimmunology; Leuven Belgium
- Department of Neurology; University Hospitals Leuven; Leuven Belgium
| | - An Goris
- KU Leuven; Department of Neurosciences; Laboratory for Neuroimmunology; Leuven Belgium
| | - Carine Wouters
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
- Laboratory of Paediatric Immunology; University Hospitals Leuven; Leuven Belgium
| | - Patrick Matthys
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
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11
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Lee SW, Park HJ, Van Kaer L, Hong S, Hong S. Graphene oxide polarizes iNKT cells for production of TGFβ and attenuates inflammation in an iNKT cell-mediated sepsis model. Sci Rep 2018; 8:10081. [PMID: 29973666 PMCID: PMC6031608 DOI: 10.1038/s41598-018-28396-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 06/19/2018] [Indexed: 12/12/2022] Open
Abstract
Graphene oxide (GO) modulates the functions of antigen-presenting cells including dendritic cells (DCs). Although carbon nanotubes affect expression of the MHC class I-like CD1d molecule, whether GO can influence immune responses of CD1d-dependent invariant natural killer T (iNKT) cells remains unclear. Here, we investigated the impact of GO on inflammatory responses mediated by α-galactosylceramide (α-GalCer), an iNKT cell agonist. We found that in vivo GO treatment substantially inhibited the capacity of α-GalCer to induce the iNKT cell-mediated trans-activation of and cytokine production by innate and innate-like cells, including DCs, macrophages, NK cells, and γδ T cells. Such effects of GO on α-GalCer-induced inflammatory responses closely correlated with iNKT cell polarization towards TGFβ production, which also explains the capacity of GO to expand regulatory T cells. Interestingly, the absence of TLR4, a receptor for GO, failed to downregulate, and instead partially enhanced the anti-inflammatory activity of GO against α-GalCer-elicited responses, implying negative effects of TLR4 signaling on the anti-inflammatory properties of GO. By employing an α-GalCer-induced sepsis model, we further demonstrated that GO treatment significantly protected mice from α-GalCer-induced lethality. Taken together, we provide strong evidence that GO holds promise as an adjuvant to modulate iNKT cell responses for immunotherapy.
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Affiliation(s)
- Sung Won Lee
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul, 05006, Korea
- Graphene Research Institute, Sejong University, Seoul, 05006, Korea
| | - Hyun Jung Park
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul, 05006, Korea
| | - Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
| | - Suklyun Hong
- Graphene Research Institute, Sejong University, Seoul, 05006, Korea.
- Department of Physics, Sejong University, Seoul, 05006, Korea.
| | - Seokmann Hong
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul, 05006, Korea.
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12
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Xu R, Lin F, Bao C, Wang FS. Mechanism of C5a-induced immunologic derangement in sepsis. Cell Mol Immunol 2017; 14:792-793. [PMID: 28782758 PMCID: PMC5596250 DOI: 10.1038/cmi.2017.68] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 06/27/2017] [Indexed: 11/09/2022] Open
Affiliation(s)
- Ruonan Xu
- Treatment and Research Centre for Infectious Disease, Beijing 100039, China
| | - Fang Lin
- The Institute of Intensive Care Unit, Beijing 100039, China
| | - Chunmei Bao
- The Institute of Clinical Examination Centre, Beijing 100039, China
| | - Fu-Sheng Wang
- Treatment and Research Centre for Infectious Disease, Beijing 100039, China
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13
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Mingomataj EÇ, Bakiri AH. Regulator Versus Effector Paradigm: Interleukin-10 as Indicator of the Switching Response. Clin Rev Allergy Immunol 2016; 50:97-113. [PMID: 26450621 DOI: 10.1007/s12016-015-8514-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The interleukin-10 (IL-10) is generally considered as the most important cytokine with anti-inflammatory properties and one of the key cytokines preventing inflammation-mediated tissue damage. In this respect, IL-10 producing cells play a crucial role in the outcome of infections, allergy, autoimmune reactions, tumor development, and transplant tolerance. Based on recent findings with regard to the mentioned clinical conditions, this review attempts to shed some light on the IL-10 functions, considering this cytokine as inherent inducer of the switching immunity. While acute infections and vaccinations are associated by IL-10 enhanced during few weeks, chronic parasitoses, tumor diseases, allergen-specific immunotherapy, transplants, and use of immune-suppressor drugs show an increased IL-10 level along months or years. With regard to autoimmune pathologies, the IL-10 increase is prevalently observed during early stages, whereas the successive stages are characterized by reaching of immune equilibrium independently to disease's activity. Together, these findings indicate that IL-10 is mainly produced during transient immune conditions and the persistent IL-10-related effect is the indication/prediction (and maybe effectuation) of the switching immunity. Actual knowledge emphasizes that any manipulation of the IL-10 response for treatment purposes should be considered very cautiously due to its potential hazards to the immune system. Probably, the IL-10 as potential switcher of immunity response should be used in association with co-stimulatory immune effectors that are necessary to determine the appropriate deviation during treatment of respective pathologies. Hopefully, further findings would open new avenues to study the biology of this "master switch" cytokine and its therapeutic potential.
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Affiliation(s)
- Ervin Ç Mingomataj
- Department of Allergy & Clinical Immunology, "Mother Theresa" School of Medicine, Tirana, Albania. .,Faculty of Technical Medical Sciences, Department of Preclinical Disciplines, University of Medicine, Tirana, Albania.
| | - Alketa H Bakiri
- Hygeia Hospital Tirana, Outpatients Service, Allergology Consulting Room, Tirana, Albania.,Faculty of Medical Sciences, Department of Preclinical Disciplines, Albanian University, Tirana, Albania
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Ligocki AJ, Niederkorn JY. Natural Killer T Cells Contribute to Neutrophil Recruitment and Ocular Tissue Damage in a Model of Intraocular Tumor Rejection. Invest Ophthalmol Vis Sci 2016; 57:813-23. [PMID: 26934137 PMCID: PMC4777277 DOI: 10.1167/iovs.15-18786] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
PURPOSE Immune privilege of the eye protects the nonregenerative ocular tissues from innate and adaptive immune-mediated inflammation. In the case of intraocular tumors, immune privilege can be arrested to allow for immune-mediated rejection. Activation of innate immune cells can contribute to necrosis of the intraocular tumor and bystander ocular tissue. Identifying the cellular components of the innate immune system that contribute to ocular destruction, but are not needed for tumor rejection, provides insights into the immunopathological sequelae in intraocular tumor rejection. METHODS Wild-type (WT), Jα18 knockout (KO) mice lacking type I natural killer T (NKT) cells, and CD1d KO mice lacking all NKT cells, were used to identify the role of type II NKT cells in intraocular tumor rejection immunopathology. RESULTS CD1d KO mice had significantly lowered rates of necrotic eye destruction during tumor rejection compared to WT or Jα18 KO mice. Transcriptome and protein analyses revealed that CD1d KO mice had significantly lower expression of CXCL3 compared to WT or Jα18 KO mice, and this was associated with decreased neutrophil recruitment. The presence of type II NKT cells in WT or Jα18 KO mice led to increased CXCL3, which attracted neutrophils to the intraocular tumor and culminated in destruction of the eye. CONCLUSIONS We found that type II NKT cells are critical in initiating a damaging inflammatory antitumor response involving the recruitment of neutrophils that compromises the integrity of the eye. Loss of type II NKT cells or depleting neutrophils allows for a productive intraocular tumor response that converts the rejection phenotype to preserve the eye.
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Hill TM, Gilchuk P, Cicek BB, Osina MA, Boyd KL, Durrant DM, Metzger DW, Khanna KM, Joyce S. Border Patrol Gone Awry: Lung NKT Cell Activation by Francisella tularensis Exacerbates Tularemia-Like Disease. PLoS Pathog 2015; 11:e1004975. [PMID: 26068662 PMCID: PMC4465904 DOI: 10.1371/journal.ppat.1004975] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 05/26/2015] [Indexed: 12/19/2022] Open
Abstract
The respiratory mucosa is a major site for pathogen invasion and, hence, a site requiring constant immune surveillance. The type I, semi-invariant natural killer T (NKT) cells are enriched within the lung vasculature. Despite optimal positioning, the role of NKT cells in respiratory infectious diseases remains poorly understood. Hence, we assessed their function in a murine model of pulmonary tularemia—because tularemia is a sepsis-like proinflammatory disease and NKT cells are known to control the cellular and humoral responses underlying sepsis. Here we show for the first time that respiratory infection with Francisella tularensis live vaccine strain resulted in rapid accumulation of NKT cells within the lung interstitium. Activated NKT cells produced interferon-γ and promoted both local and systemic proinflammatory responses. Consistent with these results, NKT cell-deficient mice showed reduced inflammatory cytokine and chemokine response yet they survived the infection better than their wild type counterparts. Strikingly, NKT cell-deficient mice had increased lymphocytic infiltration in the lungs that organized into tertiary lymphoid structures resembling induced bronchus-associated lymphoid tissue (iBALT) at the peak of infection. Thus, NKT cell activation by F. tularensis infection hampers iBALT formation and promotes a systemic proinflammatory response, which exacerbates severe pulmonary tularemia-like disease in mice. NKT cells are innate-like lymphocytes with a demonstrated role in a wide range of diseases. Often cited for their ability to rapidly produce a variety of cytokines upon activation, they have long been appreciated for their ability to “jump-start” the immune system and to shape the quality of both the innate and adaptive response. This understanding of their function has been deduced from in vitro experiments or through the in vivo administration of highly potent, chemically synthesized lipid ligands, which may not necessarily reflect a physiologically relevant response as observed in a natural infection. Using a mouse model of pulmonary tularemia, we report that intranasal infection with the live vaccine strain of F. tularensis rapidly activates NKT cells and promotes systemic inflammation, increased tissue damage, and a dysregulated immune response resulting in increased morbidity and mortality in infected mice. Our data highlight the detrimental effects of NKT cell activation and identify a potential new target for therapies against pulmonary tularemia.
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Affiliation(s)
- Timothy M. Hill
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Pavlo Gilchuk
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- Veterans Administration Tennessee Valley Healthcare System, Nashville, Tennessee, United States of America
| | - Basak B. Cicek
- Department of Immunology, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Maria A. Osina
- Department of Psychology and Human Development, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Kelli L. Boyd
- Veterans Administration Tennessee Valley Healthcare System, Nashville, Tennessee, United States of America
| | - Douglas M. Durrant
- Center for Immunology and Microbial Disease, Albany Medical College, Albany, New York, United States of America
| | - Dennis W. Metzger
- Center for Immunology and Microbial Disease, Albany Medical College, Albany, New York, United States of America
| | - Kamal M. Khanna
- Department of Immunology, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Sebastian Joyce
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- Veterans Administration Tennessee Valley Healthcare System, Nashville, Tennessee, United States of America
- * E-mail:
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