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Wang Q, Chen Y, Chen Y, Lv J, Ding H, Huang J, Huang J, Huang Z, Yang B, Zhang W, Fang X. Improved cure rate of periprosthetic joint infection through targeted antibiotic therapy based on integrated pathogen diagnosis strategy. Front Cell Infect Microbiol 2024; 14:1388385. [PMID: 38836059 PMCID: PMC11148460 DOI: 10.3389/fcimb.2024.1388385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 04/18/2024] [Indexed: 06/06/2024] Open
Abstract
Objectives This study aimed to determine whether combined of pathogen detection strategies, including specimen acquisition, culture conditions, and molecular diagnostics, can improve treatment outcomes in patients with periprosthetic joint infections (PJI). Methods This retrospective study included suspected PJI cases from three sequential stages at our institution: Stage A (July 2012 to June 2015), Stage B (July 2015 to June 2018), and Stage C (July 2018 to June 2021). Cases were categorized into PJI and aseptic failure (AF) groups based on European Bone and Joint Infection Society (EBJIS) criteria. Utilization of pathogen diagnostic strategies, pathogen detection rates, targeted antibiotic prescription rates, and treatment outcomes were analyzed and compared across the three stages. Results A total of 165 PJI cases and 38 AF cases were included in this study. With the progressive implementation of the three optimization approaches across stages A, B and C, pathogen detection rates exhibited a gradual increase (χ2 = 8.282, P=0.016). Similarly, utilization of targeted antibiotic therapy increased stepwise from 57.1% in Stage A, to 82.3% in Stage B, and to 84% in Stage C (χ2 = 9.515, P=0.009). The 2-year infection control rate exceeded 90% in both stages B and C, surpassing stage A (71.4%) (χ2 = 8.317, P=0.011). Combined application of all three optimized protocols yielded the highest sensitivity of 91.21% for pathogen detection, while retaining higher specificity of 92.11%. Conclusion The utilization of combined pathogen diagnostic strategies in PJI can increase pathogen detection rates, improve targeted antibiotic prescription, reduce the occurrence of antibiotic complications, and achieve better treatment outcomes.
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Affiliation(s)
- Qijin Wang
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Provincial Institute of Orthopedics, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, The Affiliated Mindong Hospital of Fujian Medical University, Fuan, China
| | - Yongfa Chen
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Provincial Institute of Orthopedics, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Yang Chen
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Provincial Institute of Orthopedics, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Jianhua Lv
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Provincial Institute of Orthopedics, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Haiqi Ding
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Provincial Institute of Orthopedics, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Jiagu Huang
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Provincial Institute of Orthopedics, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Jiexin Huang
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Provincial Institute of Orthopedics, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Zida Huang
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Provincial Institute of Orthopedics, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Bin Yang
- Department of Laboratory Medicine, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Wenming Zhang
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Provincial Institute of Orthopedics, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Xinyu Fang
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Orthopaedic Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Provincial Institute of Orthopedics, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
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Cheng R, Zhou C, Zhao M, Zhang S, Wan W, Yu Y, Wen B, Jiao J, Xiong X, Xu Q, OuYang X. TRIM56-mediated production of type I interferon inhibits intracellular replication of Rickettsia rickettsii. Microbiol Spectr 2024; 12:e0369523. [PMID: 38358243 PMCID: PMC10986528 DOI: 10.1128/spectrum.03695-23] [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: 10/17/2023] [Accepted: 01/18/2024] [Indexed: 02/16/2024] Open
Abstract
Rickettsia rickettsii (R. rickettsii), the causative agent of Rocky Mountain spotted fever (RMSF), is the most pathogenic member among Rickettsia spp. Previous studies have shown that tripartite motif-containing 56 (TRIM56) E3 ligase-induced ubiquitination of STING is important for cytosolic DNA sensing and type I interferon production to induce anti-DNA viral immunity, but whether it affects intracellular replication of R. rickettsii remains uncharacterized. Here, we investigated the effect of TRIM56 on HeLa and THP-1 cells infected with R. rickettsii. We found that the expression of TRIM56 was upregulated in the R. rickettsii-infected cells, and the overexpression of TRIM56 inhibited the intracellular replication of R. rickettsii, while R. rickettsii replication was enhanced in the TRIM56-silenced host cells with the reduced phosphorylation of IRF3 and STING and the increased production of interferon-β. In addition, the mutation of the TRIM56 E3 ligase catalytic site impairs the inhibitory function against R. rickettsii in HeLa cells. Altogether, our study discovers that TRIM56 is a host restriction factor of R. rickettsii by regulating the cGAS-STING-mediated signaling pathway. This study gives new evidence for the role of TRIM56 in the innate immune response against intracellular bacterial infection and provides new therapeutic targets for RMSF. IMPORTANCE Given that Rickettsia rickettsii (R. rickettsii) is the most pathogenic member within the Rickettsia genus and serves as the causative agent of Rocky Mountain spotted fever, there is a growing need to explore host targets. In this study, we examined the impact of host TRIM56 on R. rickettsii infection in HeLa and THP-1 cells. We observed a significant upregulation of TRIM56 expression in R. rickettsii-infected cells. Remarkably, the overexpression of TRIM56 inhibited the intracellular replication of R. rickettsii, while silencing TRIM56 enhanced bacterial replication accompanied by reduced phosphorylation of IRF3 and STING, along with increased interferon-β production. Notably, the mutation of the TRIM56's E3 ligase catalytic site did not impede R. rickettsii replication in HeLa cells. Collectively, our findings provide novel insights into the role of TRIM56 as a host restriction factor against R. rickettsii through the modulation of the cGAS-STING signaling pathway.
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Affiliation(s)
- Ruxi Cheng
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Chunyu Zhou
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Mingliang Zhao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Shan Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Weiqiang Wan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yonghui Yu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Bohai Wen
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Jun Jiao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Xiaolu Xiong
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Qin Xu
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Xuan OuYang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
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3
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Serene LG, Webber K, Champion PA, Schorey JS. Mycobacterium tuberculosis SecA2-dependent activation of host Rig-I/MAVs signaling is not conserved in Mycobacterium marinum. PLoS One 2024; 19:e0281564. [PMID: 38394154 PMCID: PMC10889897 DOI: 10.1371/journal.pone.0281564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 11/02/2023] [Indexed: 02/25/2024] Open
Abstract
Retinoic acid inducible gene I (Rig-I) is a cytosolic pattern recognition receptor canonically described for its important role in sensing viral RNAs. Increasingly, bacterially-derived RNA from intracellular bacteria such as Mycobacterium tuberculosis, have been shown to activate the same host Rig-I/Mitochondrial antiviral sensing protein (MAVS) signaling pathway to drive a type-I interferon response that contributes to bacterial pathogenesis in vivo. In M. tuberculosis, this response is mediated by the protein secretion system SecA2, but little is known about whether this process is conserved in other pathogenic mycobacteria or the mechanism by which these nucleic acids gain access to the host cytoplasm. Because the M. tuberculosis and M. marinum SecA2 protein secretion systems share a high degree of genetic and functional conservation, we hypothesized that Rig-I/MAVS activation and subsequent induction of IFN-β secretion by host macrophages will also be conserved between these two mycobacterial species. To test this, we generated a ΔsecA2 M. marinum strain along with complementation strains expressing either the M. marinum or M. tuberculosis secA2 genes. Our results suggest that the ΔsecA2 strain has a growth defect in vitro but not in host macrophages. These intracellular growth curves also suggested that the calculation applied to estimate the number of bacteria added to macrophage monolayers in infection assays underestimates bacterial inputs for the ΔsecA2 strain. Therefore, to better examine secreted IFN-β levels when bacterial infection levels are equal across strains we plated bacterial CFUs at 2hpi alongside our ELISA based infections. This enabled us to normalize secreted levels of IFN-β to a standard number of bacteria. Applying this approach to both WT and MAVS-/- bone marrow derived macrophages we observed equal or higher levels of secreted IFN-β from macrophages infected with the ΔsecA2 M. marinum strain as compared to WT. Together our findings suggest that activation of host Rig-I/MAVS cytosolic sensors and subsequent induction of IFN-β response in a SecA2-dependent manner is not conserved in M. marinum under the conditions tested.
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Affiliation(s)
- Lindsay G. Serene
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, United States of America
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, United States of America
| | - Kylie Webber
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, United States of America
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, United States of America
| | - Patricia A. Champion
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, United States of America
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, United States of America
| | - Jeffrey S. Schorey
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, United States of America
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, United States of America
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Hoagland DA, Rodríguez-Morales P, Mann AO, Yu S, Lai A, Vazquez AB, Pope SD, Lim J, Li S, Zhang X, Li MO, Medzhitov R, Franklin RA. Macrophages control pathological interferon responses during viral respiratory infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.16.572019. [PMID: 38168230 PMCID: PMC10760173 DOI: 10.1101/2023.12.16.572019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Antiviral immune mediators, including interferons and their downstream effectors, are critical for host defense yet can become detrimental when uncontrolled. Here, we identify a macrophage-mediated anti-inflammatory mechanism that limits type I interferon (IFN-I) responses. Specifically, we found that cellular stress and pathogen recognition induce Oncostatin M (OSM) production by macrophages. OSM-deficient mice succumbed to challenge with influenza or a viral mimic due to heightened IFN-I activation. Macrophage-derived OSM restricted excessive IFN-I production by lung epithelial cells following viral stimulation. Furthermore, reconstitution of OSM in the respiratory tract was sufficient to protect mice lacking macrophage-derived OSM against morbidity, indicating the importance of local OSM production. This work reveals a host strategy to dampen inflammation in the lung through the negative regulation of IFN-I by macrophages.
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Affiliation(s)
| | | | | | - Shuang Yu
- Department of Immunobiology, Yale University School of Medicine; New Haven, CT, USA
| | - Alicia Lai
- Department of Immunology, Harvard Medical School; Boston, MA, USA
| | | | - Scott D. Pope
- Department of Immunobiology, Yale University School of Medicine; New Haven, CT, USA
| | - Jaechul Lim
- Department of Immunobiology, Yale University School of Medicine; New Haven, CT, USA
- Current affiliation: Laboratory of Immunology, College of Veterinary Medicine, Seoul National University; Seoul, Republic of Korea
| | - Shun Li
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center; New York, NY, USA
| | - Xian Zhang
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center; New York, NY, USA
| | - Ming O. Li
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center; New York, NY, USA
| | - Ruslan Medzhitov
- Department of Immunobiology, Yale University School of Medicine; New Haven, CT, USA
- Howard Hughes Medical Institute; New Haven, CT, USA
| | - Ruth A. Franklin
- Department of Immunology, Harvard Medical School; Boston, MA, USA
- Department of Stem Cell and Regenerative Biology, Harvard University; Cambridge, MA, USA
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5
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Degabriel M, Valeva S, Boisset S, Henry T. Pathogenicity and virulence of Francisella tularensis. Virulence 2023; 14:2274638. [PMID: 37941380 PMCID: PMC10653695 DOI: 10.1080/21505594.2023.2274638] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 10/18/2023] [Indexed: 11/10/2023] Open
Abstract
Tularaemia is a zoonotic disease caused by the Gram-negative bacterium, Francisella tularensis. Depending on its entry route into the organism, F. tularensis causes different diseases, ranging from life-threatening pneumonia to less severe ulceroglandular tularaemia. Various strains with different geographical distributions exhibit different levels of virulence. F. tularensis is an intracellular bacterium that replicates primarily in the cytosol of the phagocytes. The main virulence attribute of F. tularensis is the type 6 secretion system (T6SS) and its effectors that promote escape from the phagosome. In addition, F. tularensis has evolved a peculiar envelope that allows it to escape detection by the immune system. In this review, we cover tularaemia, different Francisella strains, and their pathogenicity. We particularly emphasize the intracellular life cycle, associated virulence factors, and metabolic adaptations. Finally, we present how F. tularensis largely escapes immune detection to be one of the most infectious and lethal bacterial pathogens.
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Affiliation(s)
- Manon Degabriel
- CIRI, Centre International de Recherche en Infectiologie, Inserm U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Univ Lyon, LYON, France
| | - Stanimira Valeva
- CIRI, Centre International de Recherche en Infectiologie, Inserm U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Univ Lyon, LYON, France
| | - Sandrine Boisset
- CIRI, Centre International de Recherche en Infectiologie, Inserm U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Univ Lyon, LYON, France
- Univ. Grenoble Alpes, CHU Grenoble Alpes, CNRS, CEA, UMR5075, Institut de Biologie Structurale, Grenoble, France
| | - Thomas Henry
- CIRI, Centre International de Recherche en Infectiologie, Inserm U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Univ Lyon, LYON, France
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Jones LO, Willms RJ, Xu X, Graham RDV, Eklund M, Shin M, Foley E. Single-cell resolution of the adult zebrafish intestine under conventional conditions and in response to an acute Vibrio cholerae infection. Cell Rep 2023; 42:113407. [PMID: 37948182 DOI: 10.1016/j.celrep.2023.113407] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 10/08/2023] [Accepted: 10/24/2023] [Indexed: 11/12/2023] Open
Abstract
Vibrio cholerae is an aquatic bacterium that causes severe and potentially deadly diarrheal disease. Despite the impact on global health, our understanding of host mucosal responses to Vibrio remains limited, highlighting a knowledge gap critical for the development of effective prevention and treatment strategies. Using a natural infection model, we combine physiological and single-cell transcriptomic studies to characterize conventionally reared adult zebrafish guts and guts challenged with Vibrio. We demonstrate that Vibrio causes a mild mucosal immune response characterized by T cell activation and enhanced antigen capture; Vibrio suppresses host interferon signaling; and ectopic activation of interferon alters the course of infection. We show that the adult zebrafish gut shares similarities with mammalian counterparts, including the presence of Best4+ cells, tuft cells, and a population of basal cycling cells. These findings provide important insights into host-pathogen interactions and emphasize the utility of zebrafish as a natural model of Vibrio infection.
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Affiliation(s)
- Lena O Jones
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Reegan J Willms
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Xinyue Xu
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Ralph Derrick V Graham
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Mckenna Eklund
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Minjeong Shin
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Edan Foley
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada.
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Qu X, Wang X, Liu B, Chen M, Ning J, Liu H, Liu G, Xu X, Zhang X, Yu K, Xu H, Lu X, Wang C. Potential roles of IFI44 genes in high resistance to Vibrio in hybrids of Argopecten scallops. FISH & SHELLFISH IMMUNOLOGY 2023; 135:108702. [PMID: 36948367 DOI: 10.1016/j.fsi.2023.108702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/13/2023] [Accepted: 03/18/2023] [Indexed: 06/18/2023]
Abstract
Vibrio bacteria are often fatal to aquatic organisms and selection of Vibrio-resistant strains is warranted for aquaculture animals. In this study, we found that hybrids between bay scallops and Peruvian scallops exhibited significantly higher resistance to Vibrio challenge, but little is available on its mechanism. Interferon induced protein 44 (IFI44), a member of the type I interferon (IFN) family, plays an important role in the IFN immune response in invertebrates, which may also participate in the resistance to Vibrio in scallops. To explore the roles of IFI44 genes in the resistance to Vibrio, they were identified and characterized in the bay scallop (designated as AiIFI44), the Peruvian scallop (designated as ApIFI44), and their reciprocal hybrids (designated as AipIFI44 and ApiIFI44, respectively). Their open reading frame (ORF) sequences were all 1434 bp, encoding 477 amino acids, but with large variations among the four genes. The AipIFI44 and ApiIFI44 exhibited higher similarity with ApIFI44 than with AiIFI44. All four genes have a TLDc structural domain with significant variations in sequences among them. Predicted differences in conformation and posttranslational modifications may lead to altered protein activity. We further demonstrated that the AiIFI44, AipIFI44 and ApiIFI44 expressed in all the tested tissues, with the highest expression in the gills and hepatopancreas. In response to Vibrio anguillarum challenge, the profile of mRNA expression of IFI44 gene differed among the bay scallops and the two hybrids. In the bay scallops, it increased at 6 h but dramatically decreased after 12-48 h. However, the mRNA expression of both AipIFI44 and ApiIFI44 decreased at 6 h but continuously increased thereafter and reached the highest value at 48 h. The results in the present study suggest the immune responds of IFI44 in scallops and it may be related to the higher resistance to Vibrio bacterial in hybrids.
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Affiliation(s)
- Xiaoxu Qu
- College of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Xia Wang
- College of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Bo Liu
- College of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Min Chen
- Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China
| | - Junhao Ning
- Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China
| | - Haijun Liu
- Yantai Spring-Sea AquaSeed, Co., Ltd., Yantai, 264006, China
| | - Guilong Liu
- Yantai Spring-Sea AquaSeed, Co., Ltd., Yantai, 264006, China
| | - Xin Xu
- Yantai Spring-Sea AquaSeed, Co., Ltd., Yantai, 264006, China
| | - Xiaotong Zhang
- College of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Kai Yu
- College of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - He Xu
- Jiangsu Baoyuan Biotechnology Co., Ltd., Lianyungang, 222144, China; Jiangsu Haitai MariTech Co., Ltd., Lianyungang, 222144, China
| | - Xia Lu
- Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China.
| | - Chunde Wang
- College of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong, 266109, China; Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China.
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8
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Nakamura T, Shimizu T, Ikegaya R, Uda A, Watanabe K, Watarai M. Identification of pyrC gene as an immunosuppressive factor in Francisella novicida infection. Front Cell Infect Microbiol 2022; 12:1027424. [DOI: 10.3389/fcimb.2022.1027424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/13/2022] [Indexed: 11/13/2022] Open
Abstract
Francisella tularensis, a bacterial causative agent of the zoonosis tularemia, is highly pathogenic to humans. The pathogenicity of this bacterium is characterized by intracellular growth in immune cells, like macrophages, and host immune suppression. However, the detailed mechanism of immune suppression by F. tularensis is still unclear. To identify the key factors causing Francisella-mediated immunosuppression, large-scale screening using a transposon random mutant library containing 3552 mutant strains of F. tularensis subsp. novicida (F. novicida) was performed. Thirteen mutants that caused stronger tumor necrosis factor (TNF)-α production in infected U937 human macrophage cells than the wild-type F. novicida strain were isolated. Sequencing analysis of transposon insertion sites revealed 10 genes, including six novel genes, as immunosuppressive factors of Francisella. Among these, the relationship of the pyrC gene, which encodes dihydroorotase in the pyrimidine biosynthesis pathway, with Francisella-mediated immunosuppression was investigated. The pyrC deletion mutant strain (ΔpyrC) induced higher TNF-α production in U937 host cells than the wild-type F. novicida strain. The ΔpyrC mutant strain was also found to enhance host interleukin-1β and interferon (IFN)-β production. The heat-inactivated ΔpyrC mutant strain could not induce host TNF-α production. Moreover, the production of IFN-β resulting from ΔpyrC infection in U937 cells was repressed upon treatment with the stimulator of interferon genes (STING)-specific inhibitor, H-151. These results suggest that pyrC is related to the immunosuppressive activity and pathogenicity of Francisella via the STING pathway.
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Pellegrini JM, Gorvel JP, Mémet S. Immunosuppressive Mechanisms in Brucellosis in Light of Chronic Bacterial Diseases. Microorganisms 2022; 10:1260. [PMID: 35888979 PMCID: PMC9324529 DOI: 10.3390/microorganisms10071260] [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: 05/20/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 01/27/2023] Open
Abstract
Brucellosis is considered one of the major zoonoses worldwide, constituting a critical livestock and human health concern with a huge socio-economic burden. Brucella genus, its etiologic agent, is composed of intracellular bacteria that have evolved a prodigious ability to elude and shape host immunity to establish chronic infection. Brucella's intracellular lifestyle and pathogen-associated molecular patterns, such as its specific lipopolysaccharide (LPS), are key factors for hiding and hampering recognition by the immune system. Here, we will review the current knowledge of evading and immunosuppressive mechanisms elicited by Brucella species to persist stealthily in their hosts, such as those triggered by their LPS and cyclic β-1,2-d-glucan or involved in neutrophil and monocyte avoidance, antigen presentation impairment, the modulation of T cell responses and immunometabolism. Attractive strategies exploited by other successful chronic pathogenic bacteria, including Mycobacteria, Salmonella, and Chlamydia, will be also discussed, with a special emphasis on the mechanisms operating in brucellosis, such as granuloma formation, pyroptosis, and manipulation of type I and III IFNs, B cells, innate lymphoid cells, and host lipids. A better understanding of these stratagems is essential to fighting bacterial chronic infections and designing innovative treatments and vaccines.
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10
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Sharma BR, Karki R, Sundaram B, Wang Y, Vogel P, Kanneganti TD. The Transcription Factor IRF9 Promotes Colorectal Cancer via Modulating the IL-6/STAT3 Signaling Axis. Cancers (Basel) 2022; 14:cancers14040919. [PMID: 35205671 PMCID: PMC8869918 DOI: 10.3390/cancers14040919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/25/2022] [Accepted: 02/08/2022] [Indexed: 01/05/2023] Open
Abstract
Colorectal cancer (CRC) is a leading cause of cancer-related deaths worldwide, and innate immune responses and inflammation are known to affect the course of disease. Interferon (IFN) signaling in particular is critical for modulating inflammation-associated diseases including CRC. While the effects of IFN signaling in CRC have been studied, results have been conflicting. Furthermore, individual molecules in the IFN pathway that could be therapeutically targeted have distinct functions, with many of their diverse roles in CRC remaining unclear. Here, we found that IRF9 had an oncogenic effect in CRC; loss of IRF9 reduced tumorigenesis in both azoxymethane (AOM)/dextran sodium sulfate (DSS)-induced and spontaneous CRC models. IRF9 also reduced DSS-induced colitis and inflammation in the colon, but it had no effect on the NF-κB and MAPK signaling activation. Instead, IRF9 enhanced the transcription and production of the inflammatory cytokine IL-6. By promoting IL-6 release, IRF9 drove the activation of pro-oncogenic STAT3 signaling in the colon. Overall, our study found that IRF9 promoted the development of CRC via modulation of the IL-6/STAT3 signaling axis, identifying multiple potential targets and suggesting new therapeutic strategies for the treatment of CRC.
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Affiliation(s)
- Bhesh Raj Sharma
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (B.R.S.); (R.K.); (B.S.); (Y.W.)
| | - Rajendra Karki
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (B.R.S.); (R.K.); (B.S.); (Y.W.)
| | - Balamurugan Sundaram
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (B.R.S.); (R.K.); (B.S.); (Y.W.)
| | - Yaqiu Wang
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (B.R.S.); (R.K.); (B.S.); (Y.W.)
| | - Peter Vogel
- Animal Resources Center and the Veterinary Pathology Core, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA;
| | - Thirumala-Devi Kanneganti
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (B.R.S.); (R.K.); (B.S.); (Y.W.)
- Correspondence: ; Tel.: +1-901-595-3634; Fax: +1-901-595-5766
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11
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Zhang X, Lin X, Luo H, Zhi Y, Yi X, Wu X, Duan W, Cao Y, Pang J, Liu S, Zhou P. Pharmacological inhibition of K v1.3 channel impairs TLR3/4 activation and type I IFN response and confers protection against Listeria monocytogenes infection. Pharmacol Res 2022; 177:106112. [PMID: 35122955 DOI: 10.1016/j.phrs.2022.106112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/28/2022] [Accepted: 01/31/2022] [Indexed: 10/19/2022]
Abstract
Emerging data have demonstrated the critical roles of potassium efflux in the innate immune system. However, the role of potassium efflux in TLR3/4 activation and type I interferon (IFN) responses are not well elucidated. In the present study, we found potassium efflux is essential for TLR3/4 signaling, which mediates the expression of IFN and its inducible gene Cxcl10 and proinflammatory cytokine gene TNF-α. Furthermore, pharmacological inhibition of Kv1.3 channel (PAP-1), but not Kir2.1, KCa3.1 or TWIK2, attenuated TLR3/4 receptor activation in macrophages. Mechanistically, PAP-1 suppressed LPS-induced inflammatory function through marked suppressing the activation of JNK mitogen-activated protein kinase (MAPK) and p65 subunit of nuclear factor-kB (NF-kB). Notably, PAP-1 effectively protected mice against Listeria monocytogenes induced infection. Our findings reveal that potassium efflux mediated by the Kv1.3 channel is essential for TLR3/4 activation and suggest that pharmacological inhibition of Kv1.3 may help to treat type I IFN related autoimmune diseases and bacterial infections.
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Affiliation(s)
- Xin Zhang
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou (510515), China
| | - Xiulin Lin
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou (510515), China
| | - Hui Luo
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou (510515), China
| | - Yuanxing Zhi
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou (510515), China
| | - Xin Yi
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou (510515), China
| | - Xiaoyan Wu
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou (510515), China
| | - Wendi Duan
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Hangzhou (310024), China
| | - Ying Cao
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou (510515), China
| | - Jianxin Pang
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou (510515), China
| | - Shuwen Liu
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou (510515), China
| | - Pingzheng Zhou
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou (510515), China.
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12
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Abdelhamid L, Luo XM. Diet and Hygiene in Modulating Autoimmunity During the Pandemic Era. Front Immunol 2022; 12:749774. [PMID: 35069526 PMCID: PMC8766844 DOI: 10.3389/fimmu.2021.749774] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 12/13/2021] [Indexed: 12/11/2022] Open
Abstract
The immune system is an efficiently toned machinery that discriminates between friends and foes for achieving both host defense and homeostasis. Deviation of immune recognition from foreign to self and/or long-lasting inflammatory responses results in the breakdown of tolerance. Meanwhile, educating the immune system and developing immunological memory are crucial for mounting defensive immune responses while protecting against autoimmunity. Still to elucidate is how diverse environmental factors could shape autoimmunity. The emergence of a world pandemic such as SARS-CoV-2 (COVID-19) not only threatens the more vulnerable individuals including those with autoimmune conditions but also promotes an unprecedented shift in people's dietary approaches while urging for extraordinary hygiene measures that likely contribute to the development or exacerbation of autoimmunity. Thus, there is an urgent need to understand how environmental factors modulate systemic autoimmunity to better mitigate the incidence and or severity of COVID-19 among the more vulnerable populations. Here, we discuss the effects of diet (macronutrients and micronutrients) and hygiene (the use of disinfectants) on autoimmunity with a focus on systemic lupus erythematosus.
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Affiliation(s)
- Leila Abdelhamid
- Department of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
- Department of Microbiology, College of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Xin M. Luo
- Department of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
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13
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Impact of STING Inflammatory Signaling during Intracellular Bacterial Infections. Cells 2021; 11:cells11010074. [PMID: 35011636 PMCID: PMC8750390 DOI: 10.3390/cells11010074] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/21/2021] [Accepted: 12/23/2021] [Indexed: 12/15/2022] Open
Abstract
The early detection of bacterial pathogens through immune sensors is an essential step in innate immunity. STING (Stimulator of Interferon Genes) has emerged as a key mediator of inflammation in the setting of infection by connecting pathogen cytosolic recognition with immune responses. STING detects bacteria by directly recognizing cyclic dinucleotides or indirectly by bacterial genomic DNA sensing through the cyclic GMP-AMP synthase (cGAS). Upon activation, STING triggers a plethora of powerful signaling pathways, including the production of type I interferons and proinflammatory cytokines. STING activation has also been associated with the induction of endoplasmic reticulum (ER) stress and the associated inflammatory responses. Recent reports indicate that STING-dependent pathways participate in the metabolic reprogramming of macrophages and contribute to the establishment and maintenance of a robust inflammatory profile. The induction of this inflammatory state is typically antimicrobial and related to pathogen clearance. However, depending on the infection, STING-mediated immune responses can be detrimental to the host, facilitating bacterial survival, indicating an intricate balance between immune signaling and inflammation during bacterial infections. In this paper, we review recent insights regarding the role of STING in inducing an inflammatory profile upon intracellular bacterial entry in host cells and discuss the impact of STING signaling on the outcome of infection. Unraveling the STING-mediated inflammatory responses can enable a better understanding of the pathogenesis of certain bacterial diseases and reveal the potential of new antimicrobial therapy.
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14
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Wiche Salinas TR, Gosselin A, Raymond Marchand L, Moreira Gabriel E, Tastet O, Goulet JP, Zhang Y, Vlad D, Touil H, Routy JP, Bego MG, El-Far M, Chomont N, Landay AL, Cohen ÉA, Tremblay C, Ancuta P. IL-17A reprograms intestinal epithelial cells to facilitate HIV-1 replication and outgrowth in CD4+ T cells. iScience 2021; 24:103225. [PMID: 34712922 PMCID: PMC8531570 DOI: 10.1016/j.isci.2021.103225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 08/09/2021] [Accepted: 10/01/2021] [Indexed: 12/25/2022] Open
Abstract
The crosstalk between intestinal epithelial cells (IECs) and Th17-polarized CD4+ T cells is critical for mucosal homeostasis, with HIV-1 causing significant alterations in people living with HIV (PLWH) despite antiretroviral therapy (ART). In a model of IEC and T cell co-cultures, we investigated the effects of IL-17A, the Th17 hallmark cytokine, on IEC ability to promote de novo HIV infection and viral reservoir reactivation. Our results demonstrate that IL-17A acts in synergy with TNF to boost IEC production of CCL20, a Th17-attractant chemokine, and promote HIV trans-infection of CD4+ T cells and viral outgrowth from reservoir cells of ART-treated PLWH. Importantly, the Illumina RNA-sequencing revealed an IL-17A-mediated pro-inflammatory and pro-viral molecular signature, including a decreased expression of type I interferon (IFN-I)-induced HIV restriction factors. These findings point to the deleterious features of IL-17A and raise awareness for caution when designing therapies aimed at restoring the paucity of mucosal Th17 cells in ART-treated PLWH. IL-17A acts in synergy with TNF to enhance CCL20 production in IEC exposed to HIV IL-17A/TNF-activated IEC efficiently promote HIV trans-infection of CD4+ T cells IL-17A reprograms IEC to boost HIV outgrowth from CD4+ T cells of ART-treated PLWH IL-17A decreases the expression of IFN-I-induced HIV restriction factors in IEC
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Affiliation(s)
- Tomas Raul Wiche Salinas
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
- Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
| | - Annie Gosselin
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
| | | | - Etiene Moreira Gabriel
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
- Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
| | - Olivier Tastet
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
| | | | - Yuwei Zhang
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
| | - Dragos Vlad
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
| | - Hanane Touil
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
- Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
| | - Jean-Pierre Routy
- Chronic Viral Illness Service and Division of Hematology, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Mariana G. Bego
- Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
- Institut de Recherches Cliniques de Montréal, Montréal, QC, Canada
| | - Mohamed El-Far
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
| | - Nicolas Chomont
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
- Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
| | - Alan L. Landay
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Éric A. Cohen
- Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
- Institut de Recherches Cliniques de Montréal, Montréal, QC, Canada
| | - Cécile Tremblay
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
- Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
| | - Petronela Ancuta
- CHUM-Research Centre, 900 rue Saint-Denis, Tour Viger R, room R09.416, Montreal, QC H2X 0A9, Canada
- Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
- Corresponding author
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15
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Extracts of Waste from Poplar Wood Processing Alleviate Experimental Dextran Sulfate-Induced Colitis by Ameliorating Oxidative Stress, Inhibiting the Th1/Th17 Response and Inducing Apoptosis in Inflammatory Lymphocytes. Antioxidants (Basel) 2021; 10:antiox10111684. [PMID: 34829556 PMCID: PMC8614834 DOI: 10.3390/antiox10111684] [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: 09/24/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 11/16/2022] Open
Abstract
As a fast-growing tree, poplar is widely planted and typically used for wood processing in China. During poplar wood processing, a large amount of poplar sawdust (PS) and poplar leaves (PL) are produced and abandoned. To make full use of poplar resources and clarify the use of poplar as a feed additive, the active ingredients in PS and PL were extracted and isolated, and the anti-inflammatory effects of the extracts on mice with dextran sulfate sodium (DSS)-induced colitis were investigated. In vitro anti-inflammatory experiments showed that the ethyl acetate extract of PS and PL (PSE and PLE, respectively) could significantly inhibit the proliferation of concanavalin A (Con A)-activated lymphocytes. Salicortin, tremulacin and salireposide were identified in both PSE and PLE. Oral administration of PSE and PLE rescued DSS-induced colonic shortening, repaired tissue damage, and decreased the disease activity index (DAI). The antioxidant capacity, including the increased activities of glutathione peroxidase (GSH-Px), total superoxide dismutase (T-SOD and catalase (CAT) and decreased activity of myeloperoxidase (MPO), in the colons of mice with colitis was enhanced through the activation of ERK after treatment with PSE and PLE. The ratio of Th1 to Th17 cells, which can lead to inflammation in the spleen, was significantly decreased by the administration of PSE and PLE, while the phosphorylation of related transcription factors (p65, STAT1, and STAT3) was inhibited. Furthermore, PSE and PLE could induce apoptosis in Con A-activated lymphocytes, which may be associated with the increase in p-TBK1, as the molecular docking results also indicated that salireposide in PSE and PLE could interact with the TBK1 protein. Overall, our study provides a promising feed additive for improving intestinal inflammation in animals and a method for the full utilization of poplar resources.
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16
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Babamale AO, Chen ST. Nod-like Receptors: Critical Intracellular Sensors for Host Protection and Cell Death in Microbial and Parasitic Infections. Int J Mol Sci 2021; 22:11398. [PMID: 34768828 PMCID: PMC8584118 DOI: 10.3390/ijms222111398] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/04/2021] [Accepted: 10/19/2021] [Indexed: 12/14/2022] Open
Abstract
Cell death is an essential immunological apparatus of host defense, but dysregulation of mutually inclusive cell deaths poses severe threats during microbial and parasitic infections leading to deleterious consequences in the pathological progression of infectious diseases. Nucleotide-binding oligomerization domain (NOD)-Leucine-rich repeats (LRR)-containing receptors (NLRs), also called nucleotide-binding oligomerization (NOD)-like receptors (NLRs), are major cytosolic pattern recognition receptors (PRRs), their involvement in the orchestration of innate immunity and host defense against bacteria, viruses, fungi and parasites, often results in the cleavage of gasdermin and the release of IL-1β and IL-18, should be tightly regulated. NLRs are functionally diverse and tissue-specific PRRs expressed by both immune and non-immune cells. Beyond the inflammasome activation, NLRs are also involved in NF-κB and MAPK activation signaling, the regulation of type I IFN (IFN-I) production and the inflammatory cell death during microbial infections. Recent advancements of NLRs biology revealed its possible interplay with pyroptotic cell death and inflammatory mediators, such as caspase 1, caspase 11, IFN-I and GSDMD. This review provides the most updated information that caspase 8 skews the NLRP3 inflammasome activation in PANoptosis during pathogen infection. We also update multidimensional roles of NLRP12 in regulating innate immunity in a content-dependent manner: novel interference of NLRP12 on TLRs and NOD derived-signaling cascade, and the recently unveiled regulatory property of NLRP12 in production of type I IFN. Future prospects of exploring NLRs in controlling cell death during parasitic and microbial infection were highlighted.
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Affiliation(s)
- Abdulkareem Olarewaju Babamale
- Taiwan International Graduate Program in Molecular Medicine, National Yang-Ming Chiao Tung University and Academia Sinica, Taipei 11266, Taiwan;
- Parasitology Unit, Faculty of Life Sciences, University of Ilorin, Ilorin 240003, Nigeria
| | - Szu-Ting Chen
- Taiwan International Graduate Program in Molecular Medicine, National Yang-Ming Chiao Tung University and Academia Sinica, Taipei 11266, Taiwan;
- Institute of Clinical Medicine, National Yang-Ming Chiao Tung University, Taipei 11266, Taiwan
- Cancer Progression Research Center, National Yang-Ming Chiao Tung University, Taipei 11266, Taiwan
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17
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Rajan DK, Mohan K, Zhang S, Ganesan AR. Dieckol: a brown algal phlorotannin with biological potential. Biomed Pharmacother 2021; 142:111988. [PMID: 34371307 DOI: 10.1016/j.biopha.2021.111988] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/24/2021] [Accepted: 07/30/2021] [Indexed: 12/21/2022] Open
Abstract
Dieckol [C36H22O18], is a naturally occurring phlorotannin found in some brown algal species. Dieckol is gaining more attention in the scientific community for its potential biological activities. It has been exhibited a broad spectrum of therapeutic functions including anti-bacterial, anti-cancer, anti-oxidant, anti-aging, anti-diabetic, neuroprotective, and other medicinal applications. Distinct emphasis has been given to extraction, purification, and biomedical applications of dieckol. This critical review comprises of in vitro, in vivo, and in silico biological properties of dieckol. An attempt has been made to evaluate the effectiveness, therapeutical application, and mechanism of dieckol against various diseases. The pharmacological significance, current status and the dosage of multifunctional dieckol and its mechanisms have been discussed in this review. Dieckol plays an important role in apoptosis induction via inhibiting the PI3K, AKT, mTOR and FAK signaling molecules. Dieckol remarkably inhibited the lipid accumulation in high fat diet induced animal models. Dieckol, a multifaceted compound will be beneficial in attenuating the action of various diseases and it could be a potential pharmaceutical and nutraceutical compound. Therefore, the combined effects of dieckol with existing drugs and natural compounds will be studied in future to optimize its benefits. Besides limited information on the toxicological action and dosage administration of dieckol on the human was reported to date. Overall, dieckol is a prospective health-promoting compound for the development of a novel drug against numerous diseases.
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Affiliation(s)
- Durairaj Karthick Rajan
- Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608502, Tamil Nadu, India.
| | - Kannan Mohan
- PG and Research Department of Zoology, Sri Vasavi College, Erode 638316, Tamil Nadu, India.
| | - Shubing Zhang
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha, Hunan 410013, PR China
| | - Abirami Ramu Ganesan
- Group of Fermentation and Distillation, Laimburg Research Center, Laimburg 6, I-39040 Post Auer, BZ, Italy
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18
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Sumaria N, Martin S, Pennington DJ. Constrained TCRγδ-associated Syk activity engages PI3K to facilitate thymic development of IL-17A-secreting γδ T cells. Sci Signal 2021; 14:14/692/eabc5884. [PMID: 34285131 DOI: 10.1126/scisignal.abc5884] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Murine γδ17 cells, which are T cells that bear the γδ T cell receptor (TCRγδ) and secrete interleukin-17A (IL-17A), are generated in the thymus and are critical for various immune responses. Although strong TCRγδ signals are required for the development of interferon-γ (IFN-γ)-secreting γδ cells (γδIFN cells), the generation of γδ17 cells requires weaker TCRγδ signaling. Here, we demonstrated that constrained activation of the kinase Syk downstream of TCRγδ was required for the thymic development of γδ17 cells. Increasing or decreasing Syk activity by stimulating TCRγδ or inhibiting Syk, respectively, substantially reduced γδ17 cell numbers. This delimited Syk activity optimally engaged the phosphoinositide 3-kinase (PI3K)-Akt signaling pathway, which maintained the expression of master regulators of the IL-17 program, RORγt and c-Maf. Inhibition of PI3K not only abrogated γδ17 cell development but also augmented the development of a distinct, previously undescribed subset of γδ T cells. These CD8+Ly6a+ γδ T cells had a type-I IFN gene expression signature and expanded in response to stimulation with IFN-β. Collectively, these studies elucidate how weaker TCRγδ signaling engages distinct signaling pathways to specify the γδ17 cell fate and identifies a role for type-I IFNs in γδ T cell development.
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Affiliation(s)
- Nital Sumaria
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, London E1 2AT, UK
| | - Stefania Martin
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, London E1 2AT, UK
| | - Daniel J Pennington
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, London E1 2AT, UK.
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19
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Differential Immune Response Following Intranasal and Intradermal Infection with Francisella tularensis: Implications for Vaccine Development. Microorganisms 2021; 9:microorganisms9050973. [PMID: 33946283 PMCID: PMC8145380 DOI: 10.3390/microorganisms9050973] [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: 03/25/2021] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 11/17/2022] Open
Abstract
Francisella tularensis (Ft) is a Gram-negative, facultative intracellular coccobacillus that is the etiological agent of tularemia. Interestingly, the disease tularemia has variable clinical presentations that are dependent upon the route of infection with Ft. Two of the most likely routes of Ft infection include intranasal and intradermal, which result in pneumonic and ulceroglandular tularemia, respectively. While there are several differences between these two forms of tularemia, the most notable disparity is between mortality rates: the mortality rate following pneumonic tularemia is over ten times that of the ulceroglandular disease. Understanding the differences between intradermal and intranasal Ft infections is important not only for clinical diagnoses and treatment but also for the development of a safe and effective vaccine. However, the immune correlates of protection against Ft, especially within the context of infection by disparate routes, are not yet fully understood. Recent advances in different animal models have revealed new insights in the complex interplay of innate and adaptive immune responses, indicating dissimilar patterns in both responses following infection with Ft via different routes. Further investigation of these differences will be crucial to predicting disease outcomes and inducing protective immunity via vaccination or natural infection.
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20
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Alphonse N, Dickenson RE, Odendall C. Interferons: Tug of War Between Bacteria and Their Host. Front Cell Infect Microbiol 2021; 11:624094. [PMID: 33777837 PMCID: PMC7988231 DOI: 10.3389/fcimb.2021.624094] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 01/05/2021] [Indexed: 12/30/2022] Open
Abstract
Type I and III interferons (IFNs) are archetypally antiviral cytokines that are induced in response to recognition of foreign material by pattern recognition receptors (PRRs). Though their roles in anti-viral immunity are well established, recent evidence suggests that they are also crucial mediators of inflammatory processes during bacterial infections. Type I and III IFNs restrict bacterial infection in vitro and in some in vivo contexts. IFNs mainly function through the induction of hundreds of IFN-stimulated genes (ISGs). These include PRRs and regulators of antimicrobial signaling pathways. Other ISGs directly restrict bacterial invasion or multiplication within host cells. As they regulate a diverse range of anti-bacterial host responses, IFNs are an attractive virulence target for bacterial pathogens. This review will discuss the current understanding of the bacterial effectors that manipulate the different stages of the host IFN response: IFN induction, downstream signaling pathways, and target ISGs.
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Affiliation(s)
- Noémie Alphonse
- Department of Infectious Diseases, School of Immunology and Microbial Sciences, King’s College London, London, United Kingdom
- Immunoregulation Laboratory, Francis Crick Institute, London, United Kingdom
| | - Ruth E. Dickenson
- Department of Infectious Diseases, School of Immunology and Microbial Sciences, King’s College London, London, United Kingdom
| | - Charlotte Odendall
- Department of Infectious Diseases, School of Immunology and Microbial Sciences, King’s College London, London, United Kingdom
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21
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Type I IFNs facilitate innate immune control of the opportunistic bacteria Burkholderia cenocepacia in the macrophage cytosol. PLoS Pathog 2021; 17:e1009395. [PMID: 33684179 PMCID: PMC7971856 DOI: 10.1371/journal.ppat.1009395] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 03/18/2021] [Accepted: 02/16/2021] [Indexed: 12/20/2022] Open
Abstract
The mammalian immune system is constantly challenged by signals from both pathogenic and non-pathogenic microbes. Many of these non-pathogenic microbes have pathogenic potential if the immune system is compromised. The importance of type I interferons (IFNs) in orchestrating innate immune responses to pathogenic microbes has become clear in recent years. However, the control of opportunistic pathogens-and especially intracellular bacteria-by type I IFNs remains less appreciated. In this study, we use the opportunistic, Gram-negative bacterial pathogen Burkholderia cenocepacia (Bc) to show that type I IFNs are capable of limiting bacterial replication in macrophages, preventing illness in immunocompetent mice. Sustained type I IFN signaling through cytosolic receptors allows for increased expression of autophagy and linear ubiquitination mediators, which slows bacterial replication. Transcriptomic analyses and in vivo studies also show that LPS stimulation does not replicate the conditions of intracellular Gram-negative bacterial infection as it pertains to type I IFN stimulation or signaling. This study highlights the importance of type I IFNs in protection against opportunistic pathogens through innate immunity, without the need for damaging inflammatory responses.
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22
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Peignier A, Parker D. Impact of Type I Interferons on Susceptibility to Bacterial Pathogens. Trends Microbiol 2021; 29:823-835. [PMID: 33546974 DOI: 10.1016/j.tim.2021.01.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 12/30/2022]
Abstract
Interferons (IFNs) are a broad class of cytokines that have multifaceted roles. Type I IFNs have variable effects when it comes to host susceptibility to bacterial infections, that is, the resulting outcomes can be either protective or deleterious. The mechanisms identified to date have been wide and varied between pathogens. In this review, we discuss recent literature that provides new insights into the mechanisms of how type I IFN signaling exerts its effects on the outcome of infection from the host's point of view.
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Affiliation(s)
- Adeline Peignier
- Department of Pathology, Immunology, and Laboratory Medicine, Center for Immunity and Inflammation, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Dane Parker
- Department of Pathology, Immunology, and Laboratory Medicine, Center for Immunity and Inflammation, Rutgers New Jersey Medical School, Newark, NJ, USA.
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Abstract
There remains to this day a great gap in understanding as to the role of B cells and their products-antibodies and cytokines-in mediating the protective response to Francisella tularensis, a Gram-negative coccobacillus belonging to the group of facultative intracellular bacterial pathogens. We previously have demonstrated that Francisella interacts directly with peritoneal B-1a cells. Here, we demonstrate that, as early as 12 h postinfection, germ-free mice infected with Francisella tularensis produce infection-induced antibody clones reacting with Francisella tularensis proteins having orthologs or analogs in eukaryotic cells. Production of some individual clones was limited in time and was influenced by virulence of the Francisella strain used. The phylogenetically stabilized defense mechanism can utilize these early infection-induced antibodies both to recognize components of the invading pathogens and to eliminate molecular residues of infection-damaged self cells.
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24
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Yirsaw A, Baldwin CL. Goat γδ T cells. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 114:103809. [PMID: 32795585 DOI: 10.1016/j.dci.2020.103809] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 07/06/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
Goats are important food animals and are disseminated globally because of their high adaptability to varying environmental conditions and feeding regimes that provide them with a comparative advantage. Productivity is impacted by infectious diseases; this then contributes to societal poverty, food insecurity, and international trade restrictions. Since γδ T cells have been shown to have vital roles in immune responses in other mammals we reviewed the literature regarding what is known about their functions, distribution in tissues and organs and their responses to a variety of infections in goats. It has been shown that caprine γδ T cells produce interferon-γ and IL-17, are found in a variety of lymphoid and nonlymphoid tissues and constitute a significant population of blood mononuclear cells. Their representation in tissues and their functional responses may be altered concomitant with infection. This review summarizes caprine γδ T cell responses to Brucella melitensis, Fasciola hepatica, Mycobacterium avium paratuberculosis, caprine arthritis encephalitis virus (CAEV), and Schistosoma bovis in infected or vaccinated goats. Caprine γδ T cells have also been evaluated in goats infected with M. caprae, Ehrilichia ruminantium, Haemonchus contortus and peste des petits ruminants (PPR) virus but found to have an unknown or limited response or role in either protective immunity or immunopathogenesis in those cases.
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Affiliation(s)
- Alehegne Yirsaw
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003, USA.
| | - Cynthia L Baldwin
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003, USA.
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25
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Khan M, Harms JS, Liu Y, Eickhoff J, Tan JW, Hu T, Cai F, Guimaraes E, Oliveira SC, Dahl R, Cheng Y, Gutman D, Barber GN, Splitter GA, Smith JA. Brucella suppress STING expression via miR-24 to enhance infection. PLoS Pathog 2020; 16:e1009020. [PMID: 33108406 PMCID: PMC7647118 DOI: 10.1371/journal.ppat.1009020] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 11/06/2020] [Accepted: 10/01/2020] [Indexed: 12/12/2022] Open
Abstract
Brucellosis, caused by a number of Brucella species, remains the most prevalent zoonotic disease worldwide. Brucella establish chronic infections within host macrophages despite triggering cytosolic innate immune sensors, including Stimulator of Interferon Genes (STING), which potentially limit infection. In this study, STING was required for control of chronic Brucella infection in vivo. However, early during infection, Brucella down-regulated STING mRNA and protein. Down-regulation occurred post-transcriptionally, required live bacteria, the Brucella type IV secretion system, and was independent of host IRE1-RNase activity. STING suppression occurred in MyD88-/- macrophages and was not induced by Toll-like receptor agonists or purified Brucella lipopolysaccharide (LPS). Rather, Brucella induced a STING-targeting microRNA, miR-24-2, in a type IV secretion system-dependent manner. Furthermore, STING downregulation was inhibited by miR-24 anti-miRs and in Mirn23a locus-deficient macrophages. Failure to suppress STING expression in Mirn23a-/- macrophages correlated with diminished Brucella replication, and was rescued by exogenous miR-24. Mirn23a-/- mice were also more resistant to splenic colonization one week post infection. Anti-miR-24 potently suppressed replication in wild type, but much less in STING-/- macrophages, suggesting most of the impact of miR-24 induction on replication occurred via STING suppression. In summary, Brucella sabotages cytosolic surveillance by miR-24-dependent suppression of STING expression; post-STING activation “damage control” via targeted STING destruction may enable establishment of chronic infection. Cytosolic pattern recognition receptors, such as the nucleotide-activated STING molecule, play a critical role in the innate immune system by detecting the presence of intracellular invaders. Brucella bacterial species establish chronic infections in macrophages despite initially activating STING. STING participates in the control of Brucella infection, as mice or cells lacking STING show a higher burden of Brucella infection. However, we have found that early following infection, Brucella upregulates a microRNA, miR-24, that targets the STING messenger RNA, resulting in lower STING levels. Dead bacteria or bacteria lacking a functional type IV secretion system were defective at upregulating miR-24 and STING suppression, suggesting an active bacteria-driven process. Failure to upregulate miR-24 and suppress STING greatly compromised the capacity of Brucella to replicate inside macrophages and in mice. Thus, although Brucella initially activate STING during infection, the ensuing STING downregulation serves as a “damage control” mechanism, enabling intracellular infection. Viruses have long been known to target immune sensors such as STING. Our results indicate that intracellular bacterial pathogens also directly target innate immune receptors to enhance their infectious success.
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Affiliation(s)
- Mike Khan
- Cellular and Molecular Pathology Training Program, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Jerome S. Harms
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Yiping Liu
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Jens Eickhoff
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Jin Wen Tan
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Tony Hu
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Fengwei Cai
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Erika Guimaraes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte-Minas Gerais, Brazil
- Programa de Pós-Graduação em Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sergio Costa Oliveira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte-Minas Gerais, Brazil
| | - Richard Dahl
- Department of Microbiology and Immunology, Indiana University School of Medicine, South Bend, Indiana, United States of America
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana, United States of America
| | - Yong Cheng
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana, United States of America
| | - Delia Gutman
- Department of Cell Biology, University of Miami, Miami, Florida, United States of America
| | - Glen N. Barber
- Department of Cell Biology, University of Miami, Miami, Florida, United States of America
| | - Gary A. Splitter
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Judith A. Smith
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
- * E-mail:
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26
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Rippee-Brooks MD, Marcinczyk RN, Lupfer CR. What came first, the virus or the egg: Innate immunity during viral coinfections. Immunol Rev 2020; 297:194-206. [PMID: 32761626 DOI: 10.1111/imr.12911] [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: 06/19/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/13/2022]
Abstract
Infections with any pathogen can be severe and present with numerous complications caused by the pathogen or the host immune response to the invading microbe. However, coinfections, also called polymicrobial infections or secondary infections, can further exacerbate disease. Coinfections are more common than is often appreciated. In this review, we focus specifically on coinfections between viruses and other viruses, bacteria, parasites, or fungi. Importantly, innate immune signaling and innate immune cells that facilitate clearance of the initial viral infection can affect host susceptibility to coinfections. Understanding these immune imbalances may facilitate better diagnosis, prevention, and treatment of such coinfections.
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27
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Inflammasome-mediated antagonism of type I interferon enhances Rickettsia pathogenesis. Nat Microbiol 2020; 5:688-696. [PMID: 32123346 PMCID: PMC7239376 DOI: 10.1038/s41564-020-0673-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 01/21/2020] [Indexed: 12/11/2022]
Abstract
The innate immune system fights infection with inflammasomes and interferons. Facultative bacterial pathogens that inhabit the host cytosol avoid inflammasomes1–6 and are often insensitive to type I interferons (IFN-I), but are restricted by IFN-γ7–11. However, it remains unclear how obligate cytosolic bacterial pathogens, including Rickettsia species, interact with innate immunity. Here, we report that the human pathogen Rickettsia parkeri is sensitive to IFN-I and benefits from inflammasome-mediated host cell death that antagonizes IFN-I. R. parkeri-induced cell death requires the cytosolic lipopolysaccharide (LPS) receptor caspase-11 and antagonizes IFN-I production mediated by the DNA sensor cGAS. The restrictive effects of IFN-I require the interferon regulatory factor IRF5, which upregulates genes encoding guanylate binding proteins (GBPs) and inducible nitric oxide synthase (iNOS), which we found to inhibit R. parkeri. Mice lacking both IFN-I and IFN-γ receptors succumb to R. parkeri, revealing critical and overlapping roles for these cytokines in vivo. The interactions of R. parkeri with inflammasomes and interferons are similar to those of viruses, which can exploit the inflammasome to avoid IFN-I12, are restricted by IFN-I via IRF513,14, and are controlled by IFN-I and IFN-γ in vivo15–17. Our results suggest that the innate immune response to an obligate cytosolic pathogen lies at the intersection of anti-bacterial and anti-viral responses.
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28
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Detrimental Type I Interferon Signaling Dominates Protective AIM2 Inflammasome Responses during Francisella novicida Infection. Cell Rep 2019; 22:3168-3174. [PMID: 29562174 DOI: 10.1016/j.celrep.2018.02.096] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 01/29/2018] [Accepted: 02/23/2018] [Indexed: 01/18/2023] Open
Abstract
Interferons (IFNs) and inflammasomes are essential mediators of anti-microbial immunity. Type I IFN signaling drives activation of the AIM2 inflammasome in macrophages; however, the relative contribution of IFNs and inflammasome responses in host defense is less understood. We report intact AIM2 inflammasome responses in mice lacking type I IFN signaling during infection with F. novicida. Lack of type I IFN signaling conferred protection to F. novicida infection in contrast to the increased susceptibility in AIM2-deficient mice. Mice lacking both AIM2 and IFNAR2 were protected against the infection. The detrimental effects of type I IFN signaling were due to its ability to induce activation of apoptotic caspases and cell death. These results demonstrate the contrasting effects of type I IFN signaling and AIM2 during F. novicida infection in vivo and indicate a dominant role for type I IFNs in mediating detrimental responses despite the protective AIM2 inflammasome responses.
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29
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Baldwin CL, Yirsaw A, Gillespie A, Le Page L, Zhang F, Damani-Yokota P, Telfer JC. γδ T cells in livestock: Responses to pathogens and vaccine potential. Transbound Emerg Dis 2019; 67 Suppl 2:119-128. [PMID: 31515956 DOI: 10.1111/tbed.13328] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 04/30/2019] [Accepted: 07/26/2019] [Indexed: 01/01/2023]
Abstract
The immediate objective of our research is to understand the molecular mechanisms underlying activation and potentiation of the protective functional response of WC1+ γδ T cells to pathogens afflicting livestock species. The long-term goal is to incorporate stimulation of these cells into the next generation of vaccine constructs. γδ T cells have roles in the immune response to many infectious diseases including viral, bacterial, protozoan and worm infections, and their functional responses overlap with those of canonical αβ T cells, for example they produce cytokines including interferon-γ and IL-17. Stimulation of non-conventional lymphocytes including γδ T cells and αβ natural killer T (NKT) cells has been shown to contribute to protective immunity in mammals, bridging the gap between the innate and adaptive immune responses. Because of their innate-like early response, understanding how to engage γδ T-cell responses has the potential to optimize strategies of those that aim to induce pro-inflammatory responses as discussed here.
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Affiliation(s)
- Cynthia L Baldwin
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Alehegne Yirsaw
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Alexandria Gillespie
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Lauren Le Page
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Fengqiu Zhang
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Payal Damani-Yokota
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Janice C Telfer
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
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30
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Shaabani N, Honke N, Nguyen N, Huang Z, Arimoto KI, Lazar D, Loe TK, Lang KS, Prinz M, Knobeloch KP, Zhang DE, Teijaro JR. The probacterial effect of type I interferon signaling requires its own negative regulator USP18. Sci Immunol 2019; 3:3/27/eaau2125. [PMID: 30266866 DOI: 10.1126/sciimmunol.aau2125] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 08/29/2018] [Indexed: 12/15/2022]
Abstract
Type I interferon (IFN-I) signaling paradoxically impairs host immune responses during many primary and secondary bacterial infections. Lack of IFN-I receptor reduces bacterial replication and/or bacterial persistence during infection with several bacteria. However, the mechanisms that mediate the adverse IFN-I effect are incompletely understood. Here, we show that Usp18, an interferon-stimulated gene that negatively regulates IFN-I signaling, is primarily responsible for the deleterious effect of IFN-I signaling during infection of mice with Listeria monocytogenes or Staphylococcus aureus Mechanistically, USP18 promoted bacterial replication by inhibiting antibacterial tumor necrosis factor-α (TNF-α) signaling. Deleting IFNAR1 or USP18 in CD11c-Cre+ cells similarly reduced bacterial titers in multiple organs and enhanced survival. Our results demonstrate that inhibiting USP18 function can promote control of primary and secondary bacterial infection by enhancing the antibacterial effect of TNF-α, which correlates with induction of reactive oxygen species (ROS). These findings suggest that USP18 could be targeted therapeutically in patients to ameliorate disease caused by serious bacterial infections.
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Affiliation(s)
- Namir Shaabani
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, USA. .,Institute of Immunology, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany
| | - Nadine Honke
- Institute of Immunology, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany.,Department of Rheumatology, Hiller Research Center Rheumatology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Nhan Nguyen
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Zhe Huang
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Kei-Ichiro Arimoto
- Moores UCSD Cancer Center, University of California San Diego, La Jolla, CA 92093, USA
| | - Daniel Lazar
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Taylor K Loe
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Karl S Lang
- Institute of Immunology, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany
| | - Marco Prinz
- Institute of Neuropathology, Medical Faculty, University of Freiburg, Freiburg, Germany.,BIOSS Centre for Biological Signaling Studies, University of Freiburg, Freiburg, Germany
| | - Klaus-Peter Knobeloch
- Institute of Neuropathology, Medical Faculty, University of Freiburg, Freiburg, Germany
| | - Dong-Er Zhang
- Moores UCSD Cancer Center, University of California San Diego, La Jolla, CA 92093, USA.,Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA.,Division of Biological Science, University of California San Diego, La Jolla, CA 92093, USA
| | - John R Teijaro
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, USA.
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31
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Yang S, Yin Y, Xu W, Zhang X, Gao Y, Liao H, Hu X, Wang J, Wang H. Type I interferon induced by DNA of nontypeable Haemophilus influenza modulates inflammatory cytokine profile to promote susceptibility to this bacterium. Int Immunopharmacol 2019; 74:105710. [PMID: 31255879 DOI: 10.1016/j.intimp.2019.105710] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 06/15/2019] [Accepted: 06/18/2019] [Indexed: 12/18/2022]
Abstract
Type I interferon (IFN) is indispensable for antiviral immunity, but its role in bacterial infections is controversial and not fully described. Nontypeable Haemophilus influenzae (NTHi) is one of the most common bacterial pathogens in patients with chronic obstructive pulmonary disease (COPD). NTHi-DNA activates type I IFN production in macrophages, but the function of type I IFN in host-pathogen interactions, in the context of NTHi infection, is still unclear. Here, we showed that type I IFN, induced by NTHi-DNA, restrained bacterial killing in vitro and promoted COPD development in vivo in response to NTHi. Mice deficient for type I IFN receptor (IFNAR) exhibited improved resistance to NTHi infection. Moreover, similar to exogenous IFN-β, NTHi-DNA-induced type I IFN increased the production of IL-6, IL-1β, IL-12 and CXCL10 via p38 MAPK activation. Our findings demonstrated that NTHi-DNA-induced type I IFN signaling played a negative role in host defense against NTHi infection and identified potential targets for future therapeutic management of COPD.
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Affiliation(s)
- Shenghui Yang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China; School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Yibing Yin
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China; School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Wenchun Xu
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China; School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Xuemei Zhang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China; School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Yue Gao
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China; School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Hongyi Liao
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China; School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Xuexue Hu
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China; School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Jian Wang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China; School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Hong Wang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China; School of Laboratory Medicine, Chongqing Medical University, Chongqing, China.
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32
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Nandakumar R, Tschismarov R, Meissner F, Prabakaran T, Krissanaprasit A, Farahani E, Zhang BC, Assil S, Martin A, Bertrams W, Holm CK, Ablasser A, Klause T, Thomsen MK, Schmeck B, Howard KA, Henry T, Gothelf KV, Decker T, Paludan SR. Intracellular bacteria engage a STING-TBK1-MVB12b pathway to enable paracrine cGAS-STING signalling. Nat Microbiol 2019; 4:701-713. [PMID: 30804548 PMCID: PMC6433288 DOI: 10.1038/s41564-019-0367-z] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 01/10/2019] [Indexed: 12/11/2022]
Abstract
The innate immune system is crucial for eventual control of infections, but may also contribute to pathology. Listeria monocytogenes is an intracellular Gram-positive bacteria and a major cause of food-borne disease. However, important knowledge on the interactions between L. monocytogenes and the immune system is still missing. Here, we report that Listeria DNA is sorted into extracellular vesicles (EVs) in infected cells and delivered to bystander cells to stimulate the cyclic guanosine monophosphate-adenosine monophosphate synthase (cGAS)-stimulator of interferon genes (STING) pathway. This was also observed during infections with Francisella tularensis and Legionella pneumophila. We identify the multivesicular body protein MVB12b as a target for TANK-binding kinase 1 phosphorylation, which is essential for the sorting of DNA into EVs and stimulation of bystander cells. EVs from Listeria-infected cells inhibited T-cell proliferation, and primed T cells for apoptosis. Collectively, we describe a pathway for EV-mediated delivery of foreign DNA to bystander cells, and suggest that intracellular bacteria exploit this pathway to impair antibacterial defence.
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Affiliation(s)
| | - Roland Tschismarov
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, University of Vienna, Vienna, Austria
| | - Felix Meissner
- Experimental Systems Immunology, Max Planck Institute of Biochemistry, Munich, Germany
| | | | - Abhichart Krissanaprasit
- Department of Chemistry, Aarhus University, Aarhus, Denmark
- Center for DNA Nanotechnology, Aarhus University, Aarhus, Denmark
- Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| | - Ensieh Farahani
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Bao-Cun Zhang
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Sonia Assil
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Amandine Martin
- CIRI, Inserm, CNRS, Ecole Normale Supérieure Lyon and University Claude Bernard Lyon 1, Lyon, France
| | - Wilhelm Bertrams
- Institute for Lung Research, German Center for Lung Research, Universities of Giessen and Marburg Lung Centre, Philipps-University Marburg, Marburg, Germany
| | | | - Andrea Ablasser
- Global Health Institute, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Tanja Klause
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | | | - Bernd Schmeck
- Institute for Lung Research, German Center for Lung Research, Universities of Giessen and Marburg Lung Centre, Philipps-University Marburg, Marburg, Germany
| | - Kenneth A Howard
- Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Thomas Henry
- CIRI, Inserm, CNRS, Ecole Normale Supérieure Lyon and University Claude Bernard Lyon 1, Lyon, France
| | - Kurt V Gothelf
- Department of Chemistry, Aarhus University, Aarhus, Denmark
- Center for DNA Nanotechnology, Aarhus University, Aarhus, Denmark
- Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| | - Thomas Decker
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, University of Vienna, Vienna, Austria
| | - Søren R Paludan
- Department of Biomedicine, Aarhus University, Aarhus, Denmark.
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Luo F, Liu H, Yang S, Fang Y, Zhao Z, Hu Y, Jin Y, Li P, Gao T, Cao C, Liu X. Nonreceptor Tyrosine Kinase c-Abl- and Arg-Mediated IRF3 Phosphorylation Regulates Innate Immune Responses by Promoting Type I IFN Production. THE JOURNAL OF IMMUNOLOGY 2019; 202:2254-2265. [PMID: 30842273 DOI: 10.4049/jimmunol.1800461] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 02/15/2019] [Indexed: 01/03/2023]
Abstract
The nonreceptor tyrosine kinase c-Abl plays important roles in T cell development and immune responses; however, the mechanism is poorly understood. IFN regulatory factor 3 (IRF3) is a key transcriptional regulator of type I IFN-dependent immune responses against DNA and RNA viruses. The data in this study show that IRF3 is physically associated with c-Abl in vivo and directly binds to c-Abl in vitro. IRF3 is phosphorylated by c-Abl and c-Abl-related kinase, Arg, mainly at Y292. The inhibitor AMN107 inhibits IFN-β production induced by poly(dA:dT), poly(I:C), and Sendai virus in THP-1 and mouse bone marrow-derived macrophage cells. IRF3-induced transcription of IFN-β is significantly reduced by the mutation of Y292 to F. Moreover, AMN107 suppresses gene expression of absent in melanoma 2 (AIM2) and subsequently reduces inflammasome activation induced by cytosolic bacteria, dsDNA, and DNA viruses. Consistent with this finding, Francisella tularensis subsp. holarctica live vaccine strain (Ft LVS), which is known as an activator of AIM2 inflammasome, induces death in significantly more C57BL/6 mice treated with the Abl inhibitor AMN107 or c-Abl/Arg small interfering RNA than in untreated mice. This study provides new insight into the function of c-Abl and Arg in regulating immune responses and AIM2 inflammasome activation, especially against Ft LVS infection.
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Affiliation(s)
- Fengyan Luo
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - Hainan Liu
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - Shasha Yang
- Institute of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China; and
| | - Yi Fang
- 307 Hospital, Beijing 100850, China
| | - Zhihu Zhao
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - Yong Hu
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - Yanwen Jin
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - Ping Li
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - Ting Gao
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - Cheng Cao
- Beijing Institute of Biotechnology, Beijing 100850, China;
| | - Xuan Liu
- Beijing Institute of Biotechnology, Beijing 100850, China;
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Zhu Q, Zheng M, Balakrishnan A, Karki R, Kanneganti TD. Gasdermin D Promotes AIM2 Inflammasome Activation and Is Required for Host Protection against Francisella novicida. THE JOURNAL OF IMMUNOLOGY 2018; 201:3662-3668. [PMID: 30404813 DOI: 10.4049/jimmunol.1800788] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 10/15/2018] [Indexed: 12/12/2022]
Abstract
The DNA sensor absent in melanoma 2 (AIM2) forms an inflammasome complex with ASC and caspase-1 in response to Francisella tularensis subspecies novicida infection, leading to maturation of IL-1β and IL-18 and pyroptosis. AIM2 is critical for host protection against F. novicida infection in vivo; however, the role of pyroptosis downstream of the AIM2 inflammasome is unknown. Recent studies have identified gasdermin D (GSDMD) as the molecule executing pyroptosis by forming pores on the plasma membrane following activation by inflammatory caspase-1 and -11. In this study, we report that GSDMD-deficient mice were susceptible to F. novicida infection compared with wild type mice. Interestingly, we observed that GSDMD is required for optimal caspase-1 activation and pyroptotic cell death in F. novicida-infected bone marrow-derived macrophages. Furthermore, caspase-1 activation was compromised in bone marrow-derived macrophages lacking GSDMD stimulated with other AIM2 inflammasome triggers, including poly(dA:dT) transfection and mouse CMV infection. Overall, our study highlights a function, to our knowledge previously unknown, for GSDMD in promoting caspase-1 activation by AIM2 inflammasome.
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Affiliation(s)
- Qifan Zhu
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105; and.,Integrated Biomedical Sciences Program, University of Tennessee Health Science Center, Memphis, TN 38163
| | - Min Zheng
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105; and
| | - Arjun Balakrishnan
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105; and
| | - Rajendra Karki
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105; and
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Perkins DJ, Richard K, Hansen AM, Lai W, Nallar S, Koller B, Vogel SN. Autocrine-paracrine prostaglandin E 2 signaling restricts TLR4 internalization and TRIF signaling. Nat Immunol 2018; 19:1309-1318. [PMID: 30397349 PMCID: PMC6240378 DOI: 10.1038/s41590-018-0243-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 09/14/2018] [Indexed: 12/12/2022]
Abstract
The unique cell biology of Toll-like receptor 4 (TLR4) allows it to initiate two signal transduction cascades: a Mal (TIRAP)–MyD88-dependent signal from the cell surface that regulates proinflammatory cytokines and a TRAM–TRIF-dependent signal from endosomes that drives type I interferon production. Negative feedback circuits to limit TLR4 signals from both locations are necessary to balance the inflammatory response. We describe a negative feedback loop driven by autocrine-paracrine prostaglandin E2 (PGE2), and the PGE2 receptor, EP4, which restricted TRIF-dependent signals and IFN-β induction through regulation of TLR4 trafficking. Inhibition of PGE2 production or EP4 antagonism increased the rate of TLR4 endosomal translocation, and amplified TRIF-dependent IRF3 and caspase 8 activation. This PGE2-driven mechanism restricted TLR4-TRIF signaling in vitro upon infection of macrophages by Gram-negative pathogens Escherichia coli and Citrobacter rodentium and protected mice against Salmonella enteritidis serovar Typhimurium (ST)-induced mortality. Thus, PGE2 restricts TLR4-TRIF signaling specifically in response to lipopolysaccharide.
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Affiliation(s)
- Darren J Perkins
- Department of Microbiology and Immunology, University of Maryland, Baltimore, School of Medicine, Baltimore, MD, USA.
| | - Katharina Richard
- Department of Microbiology and Immunology, University of Maryland, Baltimore, School of Medicine, Baltimore, MD, USA
| | - Anne-Marie Hansen
- Department of Microbiology and Immunology, University of Maryland, Baltimore, School of Medicine, Baltimore, MD, USA
| | - Wendy Lai
- Department of Microbiology and Immunology, University of Maryland, Baltimore, School of Medicine, Baltimore, MD, USA
| | - Shreeram Nallar
- Department of Microbiology and Immunology, University of Maryland, Baltimore, School of Medicine, Baltimore, MD, USA
| | - Beverly Koller
- Department of Genetics, UNC School of Medicine, Chapel Hill, NC, USA
| | - Stefanie N Vogel
- Department of Microbiology and Immunology, University of Maryland, Baltimore, School of Medicine, Baltimore, MD, USA.
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36
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Lee AJ, Ashkar AA. The Dual Nature of Type I and Type II Interferons. Front Immunol 2018; 9:2061. [PMID: 30254639 PMCID: PMC6141705 DOI: 10.3389/fimmu.2018.02061] [Citation(s) in RCA: 421] [Impact Index Per Article: 70.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/21/2018] [Indexed: 12/31/2022] Open
Abstract
Type I and type II interferons (IFN) are central to both combating virus infection and modulating the antiviral immune response. Indeed, an absence of either the receptor for type I IFNs or IFN-y have resulted in increased susceptibility to virus infection, including increased virus replication and reduced survival. However, an emerging area of research has shown that there is a dual nature to these cytokines. Recent evidence has demonstrated that both type I and type II IFNs have immunoregulatory functions during infection and type II immune responses. In this review, we address the dual nature of type I and type II interferons and present evidence that both antiviral and immunomodulatory functions are critical during virus infection to not only limit virus replication and initiate an appropriate antiviral immune response, but to also negatively regulate this response to minimize tissue damage. Both the activating and negatively regulatory properties of type I and II IFNs work in concert with each other to create a balanced immune response that combats the infection while minimizing collateral damage.
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Affiliation(s)
- Amanda J Lee
- Department of Pathology and Molecular Medicine, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Ali A Ashkar
- Department of Pathology and Molecular Medicine, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
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37
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Banerjee I, Behl B, Mendonca M, Shrivastava G, Russo AJ, Menoret A, Ghosh A, Vella AT, Vanaja SK, Sarkar SN, Fitzgerald KA, Rathinam VAK. Gasdermin D Restrains Type I Interferon Response to Cytosolic DNA by Disrupting Ionic Homeostasis. Immunity 2018; 49:413-426.e5. [PMID: 30170814 DOI: 10.1016/j.immuni.2018.07.006] [Citation(s) in RCA: 178] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 04/18/2018] [Accepted: 07/12/2018] [Indexed: 10/28/2022]
Abstract
Inflammasome-activated caspase-1 cleaves gasdermin D to unmask its pore-forming activity, the predominant consequence of which is pyroptosis. Here, we report an additional biological role for gasdermin D in limiting cytosolic DNA surveillance. Cytosolic DNA is sensed by Aim2 and cyclic GMP-AMP synthase (cGAS) leading to inflammasome and type I interferon responses, respectively. We found that gasdermin D activated by the Aim2 inflammasome suppressed cGAS-driven type I interferon response to cytosolic DNA and Francisella novicida in macrophages. Similarly, interferon-β (IFN-β) response to F. novicida infection was elevated in gasdermin D-deficient mice. Gasdermin D-mediated negative regulation of IFN-β occurred in a pyroptosis-, interleukin-1 (IL-1)-, and IL-18-independent manner. Mechanistically, gasdermin D depleted intracellular potassium (K+) via membrane pores, and this K+ efflux was necessary and sufficient to inhibit cGAS-dependent IFN-β response. Thus, our findings have uncovered an additional interferon regulatory module involving gasdermin D and K+ efflux.
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Affiliation(s)
- Ishita Banerjee
- Department of Immunology, UConn Health School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Bharat Behl
- Department of Immunology, UConn Health School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Morena Mendonca
- Department of Immunology, UConn Health School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA; Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Ashley J Russo
- Department of Immunology, UConn Health School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Antoine Menoret
- Department of Immunology, UConn Health School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Arundhati Ghosh
- Cancer Virology Program, University of Pittsburgh Cancer Institute, Pittsburgh, PA 15213, USA
| | - Anthony T Vella
- Department of Immunology, UConn Health School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Sivapriya Kailasan Vanaja
- Department of Immunology, UConn Health School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Saumendra N Sarkar
- Cancer Virology Program, University of Pittsburgh Cancer Institute, Pittsburgh, PA 15213, USA
| | - Katherine A Fitzgerald
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA; Centre for Molecular Inflammation Research, Department of Cancer Research and Molecular Medicine, NTNU, 7491 Trondheim, Norway
| | - Vijay A K Rathinam
- Department of Immunology, UConn Health School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA.
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38
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Li F, Li Y, Liang H, Xu T, Kong Y, Huang M, Xiao J, Chen X, Xia H, Wu Y, Zhou Z, Guo X, Hu C, Yang C, Cheng X, Chen C, Qi X. HECTD3 mediates TRAF3 polyubiquitination and type I interferon induction during bacterial infection. J Clin Invest 2018; 128:4148-4162. [PMID: 29920190 DOI: 10.1172/jci120406] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 06/14/2018] [Indexed: 02/06/2023] Open
Abstract
Lysine-63-linked (K63-linked) polyubiquitination of TRAF3 coordinates the engagement of pattern-recognition receptors with recruited adaptor proteins and downstream activator TBK1 in pathways that induce type I IFN. Whether autoubiquitination or other E3 ligases mediate K63-linked TRAF3 polyubiquitination remains unclear. We demonstrated that mice deficient in the E3 ligase gene Hectd3 remarkably increased host defense against infection by intracellular bacteria Francisella novicida, Mycobacterium, and Listeria by limiting bacterial dissemination. In the absence of HECTD3, type I IFN response was impaired during bacterial infection both in vivo and in vitro. HECTD3 regulated type I IFN production by mediating K63-linked polyubiquitination of TRAF3 at residue K138. The catalytic domain of HECTD3 regulated TRAF3 K63 polyubiquitination, which enabled TRAF3-TBK1 complex formation. Our study offers insights into mechanisms of TRAF3 modulation and provides potential therapeutic targets against infections by intracellular bacteria and inflammatory diseases.
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Affiliation(s)
- Fubing Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and
| | - Yang Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and.,Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Huichun Liang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and
| | - Tao Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and.,Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Yanjie Kong
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and
| | - Maobo Huang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and
| | - Ji Xiao
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xi Chen
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and
| | - Houjun Xia
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and
| | - Yingying Wu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and
| | - Zhongmei Zhou
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and
| | - Xiaomin Guo
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and.,Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Chunmiao Hu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and.,Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Chuanyu Yang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and
| | - Xu Cheng
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Ceshi Chen
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and
| | - Xiaopeng Qi
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, and.,Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
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39
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Che Mat NF, Siddiqui S, Mehta D, Seaver K, Banete A, Alothaimeen T, Gee K, Basta S. Lymphocytic choriomeningitis virus infection of dendritic cells interferes with TLR-induced IL-12/IL-23 cytokine production in an IL-10 independent manner. Cytokine 2018; 108:105-114. [PMID: 29602153 DOI: 10.1016/j.cyto.2018.03.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 02/25/2018] [Accepted: 03/15/2018] [Indexed: 11/25/2022]
Abstract
Dendritic cells produce IL-12 and IL-23 in response to viral and bacterial infection and these cytokines are responsible for successful pathogen clearance. How sequential viral and bacterial infections affect the production of IL-12 and IL-23 is currently not known. Our study demonstrates that in dendritic cells infected with Lymphocytic choriomeningitis virus (LCMV), TLR activation with bacterial PAMPs resulted in reduced IL-12 and IL-23 expression compared to non-infected cells. Furthermore, expression of other proinflammatory cytokines, TNF-α and IL-6, were not inhibited under these conditions. We discovered that TLR-induced phosphorylation of p38 was significantly inhibited in LCMV-infected cells. We detected enhanced expression of suppressor of cytokine signalling (SOCS)-3 and IL-10. Yet, neutralizing IL-10 did not restore IL-12/IL-23 expression. Taken together, these results show that virus infection interferes with the magnitude of TLR-mediated inflammatory responses by repressing specific cytokine expression.
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Affiliation(s)
- Nor Fazila Che Mat
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada
| | - Sarah Siddiqui
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada
| | - Divya Mehta
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada
| | - Kyle Seaver
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada
| | - Andra Banete
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada
| | - Torki Alothaimeen
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada
| | - Katrina Gee
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada.
| | - Sameh Basta
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada.
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40
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Zhong J, Peng L, Wang B, Zhang H, Li S, Yang R, Deng Y, Huang H, Yuan J. Tacrolimus interacts with voriconazole to reduce the severity of fungal keratitis by suppressing IFN-related inflammatory responses and concomitant FK506 and voriconazole treatment suppresses fungal keratitis. Mol Vis 2018; 24. [PMID: 29527115 PMCID: PMC5836723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
PURPOSE To investigate the expression and roles of type I and II interferons (IFNs) in fungal keratitis, as well as the therapeutic effects of tacrolimus (FK506) and voriconazole on this condition. METHODS The mRNA and protein expression levels of type I (IFN-α/β) and II (IFN-γ) IFNs, as well as of related downstream inflammatory cytokines (interleukin (IL)-1α, IL-6, IL-12, and IL-17), were detected in macrophages, neutrophils, lymphocytes, and corneal epithelial cells (A6(1) cells) stimulated with zymosan (10 mg/ml) for 8 or 24 h. A fungal keratitis mouse model was generated through intrastromal injection of Aspergillus fumigatus, and the mice were then divided into four groups: group I, the PBS group; group II, the voriconazole group; group III, the FK506 group; and group IV, the voriconazole plus 0.05% FK506 group. Corneal damage was evaluated with clinical scoring and histological examination. In addition, the mRNA and protein expression levels of type I (IFN-α/β) and type II (IFN-γ) IFNs, as well as related inflammatory cytokines, were determined at different time points using quantitative real-time PCR (qRT-PCR) and western blotting. RESULTS After zymosan stimulation of mouse neutrophils, lymphocytes, macrophages, and A6(1) cells, the IFN mRNA and protein expression levels were markedly increased until 24 h, peaking at 8 h (p<0.001). The mRNA and protein expression levels of inflammatory cytokines (IL-1α, IL-6, IL-12, and IL-17) were also upregulated after zymosan stimulation. Moreover, type I (IFN-α/β) and type II (IFN-γ) IFN expression levels were increased and positively correlated with the progression of fungal keratitis in vivo. FK506 administered with voriconazole reduced the pathological infiltration of inflammatory cells into the cornea and downregulated the expression levels of IFNs and related inflammatory cytokines. CONCLUSIONS In conclusion, this study demonstrated that type I and II IFN levels were markedly increased in fungal keratitis and that FK506 combined with voriconazole decreased the severity of fungal keratitis by suppressing type I and II IFNs and their related inflammatory responses.
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41
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Li Y, Guo X, Hu C, Du Y, Guo C, Di Wang, Zhao W, Huang G, Li C, Lu Q, Lai R, Xu T, Qi X. Type I IFN operates pyroptosis and necroptosis during multidrug-resistant A. baumannii infection. Cell Death Differ 2018; 25:1304-1318. [PMID: 29352265 DOI: 10.1038/s41418-017-0041-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 11/13/2017] [Accepted: 11/15/2017] [Indexed: 01/12/2023] Open
Abstract
Multidrug-resistant Acinetobacter baumannii, a common pathogen responsible for nosocomial infections, is the main cause for outbreaks of infectious diseases, such as pneumonia, meningitis, and bacteremia, especially among critically ill patients. Epidemic A. baumannii is a growing public health concern as it is resistant to all existing antimicrobial agents, thereby necessitating the development of new therapeutic approaches to mount an effective immune response against this bacterial pathogen. In this study, we identified a critical role for type I interferon (IFN) in epigenetic regulation during A. baumannii infection and established a central role for it in multiple cell death pathways. A. baumannii infection induced mixed cell death constituted of apoptosis, pyroptosis, and necroptosis. Mechanically, A. baumannii triggered TRIF-dependent type I IFN production, which in turn induced the expression of genes Zbp1, Mlkl, caspase-11, and Gsdmd via KAT2B-mediated and P300-mediated H3K27ac modification, leading to NLRP3 inflammasome activation, and potentially contributed to GSDMD-mediated pyroptosis and MLKL-dependent necroptosis. Our study offers novel insights into the mechanisms of type I IFN and provides potential therapeutic targets for infectious and inflammatory diseases.
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Affiliation(s)
- Yang Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, 650223, Kunming, Yunnan, China
| | - Xiaomin Guo
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, 650223, Kunming, Yunnan, China
| | - Chunmiao Hu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, 650223, Kunming, Yunnan, China
| | - Yan Du
- Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, 650032, Kunming, Yunnan, China
| | - Chuansheng Guo
- Institute of Immunology, Zhejiang University School of Medicine, 310058, Hangzhou, China
| | - Di Wang
- Institute of Immunology, Zhejiang University School of Medicine, 310058, Hangzhou, China
| | - Weiheng Zhao
- Shanghai Institute of Immunology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Gonghua Huang
- Shanghai Institute of Immunology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chunliang Li
- Cancer Biology Program, Department of Tumor Cell Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Qiumin Lu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, 650223, Kunming, Yunnan, China
| | - Ren Lai
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, 650223, Kunming, Yunnan, China.
| | - Tao Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, 650223, Kunming, Yunnan, China.
| | - Xiaopeng Qi
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, 650223, Kunming, Yunnan, China.
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42
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Ivin M, Dumigan A, de Vasconcelos FN, Ebner F, Borroni M, Kavirayani A, Przybyszewska KN, Ingram RJ, Lienenklaus S, Kalinke U, Stoiber D, Bengoechea JA, Kovarik P. Natural killer cell-intrinsic type I IFN signaling controls Klebsiella pneumoniae growth during lung infection. PLoS Pathog 2017; 13:e1006696. [PMID: 29112952 PMCID: PMC5675380 DOI: 10.1371/journal.ppat.1006696] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 10/16/2017] [Indexed: 12/20/2022] Open
Abstract
Klebsiella pneumoniae is a significant cause of nosocomial pneumonia and an alarming pathogen owing to the recent isolation of multidrug resistant strains. Understanding of immune responses orchestrating K. pneumoniae clearance by the host is of utmost importance. Here we show that type I interferon (IFN) signaling protects against lung infection with K. pneumoniae by launching bacterial growth-controlling interactions between alveolar macrophages and natural killer (NK) cells. Type I IFNs are important but disparate and incompletely understood regulators of defense against bacterial infections. Type I IFN receptor 1 (Ifnar1)-deficient mice infected with K. pneumoniae failed to activate NK cell-derived IFN-γ production. IFN-γ was required for bactericidal action and the production of the NK cell response-amplifying IL-12 and CXCL10 by alveolar macrophages. Bacterial clearance and NK cell IFN-γ were rescued in Ifnar1-deficient hosts by Ifnar1-proficient NK cells. Consistently, type I IFN signaling in myeloid cells including alveolar macrophages, monocytes and neutrophils was dispensable for host defense and IFN-γ activation. The failure of Ifnar1-deficient hosts to initiate a defense-promoting crosstalk between alveolar macrophages and NK cell was circumvented by administration of exogenous IFN-γ which restored endogenous IFN-γ production and restricted bacterial growth. These data identify NK cell-intrinsic type I IFN signaling as essential driver of K. pneumoniae clearance, and reveal specific targets for future therapeutic exploitations.
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Affiliation(s)
- Masa Ivin
- Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter (VBC), Vienna, Austria
| | - Amy Dumigan
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
| | - Filipe N. de Vasconcelos
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
| | - Florian Ebner
- Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter (VBC), Vienna, Austria
| | - Martina Borroni
- Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter (VBC), Vienna, Austria
| | - Anoop Kavirayani
- Vienna Biocenter Core Facilities, Histopathology Facility, Dr. Bohr-Gasse 3, Vienna, Austria
| | - Kornelia N. Przybyszewska
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
| | - Rebecca J. Ingram
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
| | - Stefan Lienenklaus
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
| | - Ulrich Kalinke
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
| | - Dagmar Stoiber
- Institute of Pharmacology, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria
| | - Jose A. Bengoechea
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
| | - Pavel Kovarik
- Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter (VBC), Vienna, Austria
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43
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Patin EC, Soulard D, Fleury S, Hassane M, Dombrowicz D, Faveeuw C, Trottein F, Paget C. Type I IFN Receptor Signaling Controls IL7-Dependent Accumulation and Activity of Protumoral IL17A-Producing γδT Cells in Breast Cancer. Cancer Res 2017; 78:195-204. [PMID: 29070614 DOI: 10.1158/0008-5472.can-17-1416] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 09/06/2017] [Accepted: 10/20/2017] [Indexed: 11/16/2022]
Abstract
The protumoral activity of γδT17 cells has recently emerged in a wide variety of solid malignancies, including breast cancer. These cells exert their detrimental functions by promoting tumor growth, angiogenesis, and subsequent metastasis development. However, the intratumoral factors that regulate the biology of γδT17cells within the tumor microenvironment are less well understood. Here, using two experimental models of breast cancer, we reinforced the concept that tumor-infiltrating γδT17 cells are endowed with protumoral functions, which promote tumor progression and metastasis development. More importantly, we demonstrated a critical role for type I IFN signaling in controlling the preferential accumulation in the tumor bed of a peculiar subset of γδT17 cells displaying a CD27- CD3bright phenotype (previously associated with the invariant Vγ6Vδ1+ TCR). Interestingly, this effect was indirect and partially relied on the IFNAR1-dependent control of IL7 secretion, a factor that triggers proliferation and activating functions of deleterious γδT17 cells. Our work therefore identifies a key role of the type I IFN/IL7 axis in the regulation of intratumoral γδT17-cell functions and in the development of primary breast tumor growth and metastasis.Significance: Tumor-derived IL7 can represent a therapeutic target to prevent accumulation of immune cells endowed with potent protumoral activities. Cancer Res; 78(1); 195-204. ©2017 AACR.
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Affiliation(s)
- Emmanuel C Patin
- Université de Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, France
| | - Daphnée Soulard
- Université de Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, France
| | - Sébastien Fleury
- Université de Lille, INSERM, Institut Pasteur de Lille, CHU Lille, U1011, EGID, Lille, France.,European Genomic Institute of Diabetes, Lille, France
| | - Maya Hassane
- Université de Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, France.,Laboratoire Microbiologie Santé et Environnement, Ecole doctorale en Sciences et Technologies/Faculté de Santé Publique, Université Libanaise, Tripoli, Liban
| | - David Dombrowicz
- Université de Lille, INSERM, Institut Pasteur de Lille, CHU Lille, U1011, EGID, Lille, France.,European Genomic Institute of Diabetes, Lille, France
| | - Christelle Faveeuw
- Université de Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, France
| | - François Trottein
- Université de Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, France
| | - Christophe Paget
- Université de Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, France. .,Université de Tours, INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France
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44
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Luo XM, Edwards MR, Reilly CM, Mu Q, Ahmed SA. Diet and Microbes in the Pathogenesis of Lupus. Lupus 2017. [DOI: 10.5772/68110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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45
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Abstract
The interleukin-17 (IL-17) family cytokines, such as IL-17A and IL-17F, play
important protective roles in host immune response to a variety of infections
such as bacterial, fungal, parasitic, and viral. The IL-17R signaling and
downstream pathways mediate induction of proinflammatory molecules which
participate in control of these pathogens. However, the production of IL-17 can
also mediate pathology and inflammation associated with infections. In this
review, we will discuss the yin-and-yang roles of IL-17 in host immunity to
pathogens.
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Affiliation(s)
- Shibali Das
- Department of Molecular Microbiology, Washington University in St. Louis, St Louis, MO, USA
| | - Shabaana Khader
- Department of Molecular Microbiology, Washington University in St. Louis, St Louis, MO, USA
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46
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Eshleman EM, Delgado C, Kearney SJ, Friedman RS, Lenz LL. Down regulation of macrophage IFNGR1 exacerbates systemic L. monocytogenes infection. PLoS Pathog 2017; 13:e1006388. [PMID: 28542482 PMCID: PMC5457163 DOI: 10.1371/journal.ppat.1006388] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 06/02/2017] [Accepted: 04/27/2017] [Indexed: 12/21/2022] Open
Abstract
Interferons (IFNs) target macrophages to regulate inflammation and resistance to microbial infections. The type II IFN (IFNγ) acts on a cell surface receptor (IFNGR) to promote gene expression that enhance macrophage inflammatory and anti-microbial activity. Type I IFNs can dampen macrophage responsiveness to IFNγ and are associated with increased susceptibility to numerous bacterial infections. The precise mechanisms responsible for these effects remain unclear. Type I IFNs silence macrophage ifngr1 transcription and thus reduce cell surface expression of IFNGR1. To test how these events might impact macrophage activation and host resistance during bacterial infection, we developed transgenic mice that express a functional FLAG-tagged IFNGR1 (fGR1) driven by a macrophage-specific promoter. Macrophages from fGR1 mice expressed physiologic levels of cell surface IFNGR1 at steady state and responded equivalently to WT C57Bl/6 macrophages when treated with IFNγ alone. However, fGR1 macrophages retained cell surface IFNGR1 and showed enhanced responsiveness to IFNγ in the presence of type I IFNs. When fGR1 mice were infected with the bacterium Listeria monocytogenes their resistance was significantly increased, despite normal type I and II IFN production. Enhanced resistance was dependent on IFNγ and associated with increased macrophage activation and antimicrobial function. These results argue that down regulation of myeloid cell IFNGR1 is an important mechanism by which type I IFNs suppress inflammatory and anti-bacterial functions of macrophages.
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Affiliation(s)
- Emily M. Eshleman
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO United States of America
| | - Christine Delgado
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO United States of America
| | - Staci J. Kearney
- Department of Biomedical Sciences, National Jewish Health, Denver, CO United States of America
| | - Rachel S. Friedman
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO United States of America
- Department of Biomedical Sciences, National Jewish Health, Denver, CO United States of America
| | - Laurel L. Lenz
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO United States of America
- Department of Biomedical Sciences, National Jewish Health, Denver, CO United States of America
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47
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Snyder DT, Hedges JF, Jutila MA. Getting "Inside" Type I IFNs: Type I IFNs in Intracellular Bacterial Infections. J Immunol Res 2017; 2017:9361802. [PMID: 28529959 PMCID: PMC5424489 DOI: 10.1155/2017/9361802] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 03/20/2017] [Accepted: 03/27/2017] [Indexed: 12/23/2022] Open
Abstract
Type I interferons represent a unique and complex group of cytokines, serving many purposes during innate and adaptive immunity. Discovered in the context of viral infections, type I IFNs are now known to have myriad effects in infectious and autoimmune disease settings. Type I IFN signaling during bacterial infections is dependent on many factors including whether the infecting bacterium is intracellular or extracellular, as different signaling pathways are activated. As such, the repercussions of type I IFN induction can positively or negatively impact the disease outcome. This review focuses on type I IFN induction and downstream consequences during infection with the following intracellular bacteria: Chlamydia trachomatis, Listeria monocytogenes, Mycobacterium tuberculosis, Salmonella enterica serovar Typhimurium, Francisella tularensis, Brucella abortus, Legionella pneumophila, and Coxiella burnetii. Intracellular bacterial infections are unique because the bacteria must avoid, circumvent, and even co-opt microbial "sensing" mechanisms in order to reside and replicate within a host cell. Furthermore, life inside a host cell makes intracellular bacteria more difficult to target with antibiotics. Because type I IFNs are important immune effectors, modulating this pathway may improve disease outcomes. But first, it is critical to understand the context-dependent effects of the type I IFN pathway in intracellular bacterial infections.
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Affiliation(s)
- Deann T. Snyder
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, USA
| | - Jodi F. Hedges
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, USA
| | - Mark A. Jutila
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, USA
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48
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Kotredes KP, Thomas B, Gamero AM. The Protective Role of Type I Interferons in the Gastrointestinal Tract. Front Immunol 2017; 8:410. [PMID: 28428788 PMCID: PMC5382159 DOI: 10.3389/fimmu.2017.00410] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 03/22/2017] [Indexed: 12/18/2022] Open
Abstract
The immune system of the gastrointestinal (GI) tract manages the significant task of recognizing and eliminating pathogens while maintaining tolerance of commensal bacteria. Dysregulation of this delicate balance can be detrimental, resulting in severe inflammation, intestinal injury, and cancer. Therefore, mechanisms to relay important signals regulating cell growth and immune reactivity must be in place to support GI homeostasis. Type I interferons (IFN-I) are a family of pleiotropic cytokines, which exert a wide range of biological effects including promotion of both pro- and anti-inflammatory activities. Using animal models of colitis, investigations into the regulation of intestinal epithelium inflammation highlight the role of IFN-I signaling during fine modulation of the immune system. The intestinal epithelium of the gut guides the immune system to differentiate between commensal and pathogenic microbiota, which relies on intimate links with the IFN-I signal-transduction pathway. The current paradigm depicts an IFN-I-induced antiproliferative state in the intestinal epithelium enabling cell differentiation, cell maturation, and proper intestinal barrier function, strongly supporting its role in maintaining baseline immune activity and clearance of damaged epithelia or pathogens. In this review, we will highlight the importance of IFN-I in intestinal homeostasis by discussing its function in inflammation, immunity, and cancer.
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Affiliation(s)
- Kevin P Kotredes
- Department of Medical Genetics and Molecular Biochemistry, Temple University School of Medicine, Philadelphia, PA, USA
| | - Brianna Thomas
- Department of Medical Genetics and Molecular Biochemistry, Temple University School of Medicine, Philadelphia, PA, USA
| | - Ana M Gamero
- Department of Medical Genetics and Molecular Biochemistry, Temple University School of Medicine, Philadelphia, PA, USA
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49
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Mayer-Barber KD, Yan B. Clash of the Cytokine Titans: counter-regulation of interleukin-1 and type I interferon-mediated inflammatory responses. Cell Mol Immunol 2017; 14:22-35. [PMID: 27264686 PMCID: PMC5214938 DOI: 10.1038/cmi.2016.25] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 04/25/2016] [Accepted: 04/26/2016] [Indexed: 02/07/2023] Open
Abstract
Over the past decades the notion of 'inflammation' has been extended beyond the original hallmarks of rubor (redness), calor (heat), tumor (swelling) and dolor (pain) described by Celsus. We have gained a more detailed understanding of the cellular players and molecular mediators of inflammation which is now being applied and extended to areas of biomedical research such as cancer, obesity, heart disease, metabolism, auto-inflammatory disorders, autoimmunity and infectious diseases. Innate cytokines are often central components of inflammatory responses. Here, we discuss how the type I interferon and interleukin-1 cytokine pathways represent distinct and specialized categories of inflammatory responses and how these key mediators of inflammation counter-regulate each other.
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Affiliation(s)
- Katrin D Mayer-Barber
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Bo Yan
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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50
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Kovarik P, Castiglia V, Ivin M, Ebner F. Type I Interferons in Bacterial Infections: A Balancing Act. Front Immunol 2016; 7:652. [PMID: 28082986 PMCID: PMC5183637 DOI: 10.3389/fimmu.2016.00652] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 12/14/2016] [Indexed: 01/21/2023] Open
Abstract
Defense against bacterial infections requires activation of the immune response as well as timely reestablishment of tissue and immune homeostasis. Instauration of homeostasis is critical for tissue regeneration, wound healing, and host recovery. Recent studies revealed that severe infectious diseases frequently result from failures in homeostatic processes rather than from inefficient pathogen eradication. Type I interferons (IFN) appear to play a key role in such processes. Remarkably, the involvement of type I IFNs in the regulation of immune and tissue homeostasis upon bacterial insult may have beneficial or detrimental consequences for the host. The reasons for such ambivalent function of type I IFNs are not understood. The disparate effects of type I IFNs on bacterial infections are in marked contrast to their well-established protective roles in most viral infections. In this review, we will focus on type I IFN effector mechanisms which balance processes involved in immune and tissue homeostasis during specific bacterial infections and highlight the most important missing links in our understanding of type I IFN functions.
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Affiliation(s)
- Pavel Kovarik
- Max F. Perutz Laboratories, University of Vienna, Vienna, Austria
| | | | - Masa Ivin
- Max F. Perutz Laboratories, University of Vienna, Vienna, Austria
| | - Florian Ebner
- Max F. Perutz Laboratories, University of Vienna, Vienna, Austria
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