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Hiraga H, Chinda D, Maeda T, Murai Y, Ogasawara K, Muramoto R, Ota S, Hasui K, Sakuraba H, Ishiguro Y, Yoshida S, Asano K, Nakane A, Fukuda S. Vitamin A Promotes the Fusion of Autophagolysosomes and Prevents Excessive Inflammasome Activation in Dextran Sulfate Sodium-Induced Colitis. Int J Mol Sci 2023; 24:ijms24108684. [PMID: 37240022 DOI: 10.3390/ijms24108684] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/06/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
Vitamin A ensures intestinal homeostasis, impacting acquired immunity and epithelial barrier function; however, its role in innate immunity is mostly unknown. Here, we studied the impact of vitamin A in different dextran sulfate sodium (DSS)-induced colitis animal models. Interestingly, more severe DSS-induced colitis was observed in vitamin A-deficient (VAD) mice than in vitamin A-sufficient (VAS) mice; the same was observed in VAD severe combined immunodeficient mice lacking T/B cells. Remarkably, IL-1β production, LC3B-II expression, and inflammasome activity in the lamina propria were significantly elevated in VAD mice. Electron microscopy revealed numerous swollen mitochondria with severely disrupted cristae. In vitro, non-canonical inflammasome signaling-induced pyroptosis, LC3B-II and p62 expression, and mitochondrial superoxide levels were increased in murine macrophages (RAW 264.7) pretreated with retinoic acid receptor antagonist (Ro41-5253). These findings suggest that vitamin A plays a crucial role in the efficient fusion of autophagosomes with lysosomes in colitis.
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Affiliation(s)
- Hiroto Hiraga
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Daisuke Chinda
- Division of Endoscopy, Hirosaki University Hospital, Hirosaki 036-8563, Japan
| | - Takato Maeda
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Yasuhisa Murai
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Kohei Ogasawara
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Ryutaro Muramoto
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Shinji Ota
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Keisuke Hasui
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Hirotake Sakuraba
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Yoh Ishiguro
- Division of Gastroenterology and Hematology, Hirosaki National Hospital, National Hospital Organization, Hirosaki 036-8545, Japan
| | | | - Krisana Asano
- Department of Microbiology and Immunology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Akio Nakane
- Department of Microbiology and Immunology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Shinsaku Fukuda
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
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Britto AMA, Siqueira JD, Curty G, Goes LR, Policarpo C, Meyrelles AR, Furtado Y, Almeida G, Giannini ALM, Machado ES, Soares MA. Microbiome analysis of Brazilian women cervix reveals specific bacterial abundance correlation to RIG-like receptor gene expression. Front Immunol 2023; 14:1147950. [PMID: 37180114 PMCID: PMC10167488 DOI: 10.3389/fimmu.2023.1147950] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 04/12/2023] [Indexed: 05/15/2023] Open
Abstract
The relationship among microbiome, immunity and cervical cancer has been targeted by several studies, yet many questions remain unanswered. We characterized herein the virome and bacteriome from cervical samples and correlated these findings with innate immunity gene expression in a Brazilian convenience sample of HPV-infected (HPV+) and uninfected (HPV-) women. For this purpose, innate immune gene expression data were correlated to metagenomic information. Correlation analysis showed that interferon (IFN) is able to differentially modulate pattern recognition receptors (PRRs) expression based on HPV status. Virome analysis indicated that HPV infection correlates to the presence of Anellovirus (AV) and seven complete HPV genomes were assembled. Bacteriome results unveiled that vaginal community state types (CST) distribution was independent of HPV or AV status, although bacterial phyla distribution differed between groups. Furthermore, TLR3 and IFNαR2 levels were higher in the Lactobacillus no iners-dominated mucosa and we detected correlations among RIG-like receptors (RLR) associated genes and abundance of specific anaerobic bacteria. Collectively, our data show an intriguing connection between HPV and AV infections that could foster cervical cancer development. Besides that, TLR3 and IFNαR2 seem to create a protective milieu in healthy cervical mucosa (L. no iners-dominated), and RLRs, known to recognize viral RNA, were correlated to anaerobic bacteria suggesting that they might be related to dysbiosis.
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Affiliation(s)
- Alan Messala A. Britto
- Departamento de Enfermagem Materno-Infantil (DEMI), Faculdade de Enfermagem (FEnf), Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
- Programa de Oncovirologia, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Infecção HIV/aids e Hepatites Virais, Hospital Universitário Gaffrée e Guinle (HUGG/Ebserh), Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Rio de Janeiro, Brazil
| | - Juliana D. Siqueira
- Programa de Oncovirologia, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
| | - Gislaine Curty
- Programa de Oncovirologia, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
| | - Livia R. Goes
- Programa de Oncovirologia, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
| | - Cintia Policarpo
- Laboratório de Genômica Funcional e Transdução de Sinal, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Angela R. Meyrelles
- Instituto de Ginecologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Yara Furtado
- Instituto de Ginecologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Escola de Medicina e Cirurgia da Universidade Federal do Estado do Rio de Janeiro, Universidade Federal do Rio de Janeiro (UNIRIO), Rio de Janeiro, Brazil
| | - Gutemberg Almeida
- Instituto de Ginecologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Lucia M. Giannini
- Laboratório de Genômica Funcional e Transdução de Sinal, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Elizabeth S. Machado
- Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcelo A. Soares
- Programa de Oncovirologia, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
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Johnson MB, Halman JR, Burmeister AR, Currin S, Khisamutdinov EF, Afonin KA, Marriott I. Retinoic acid inducible gene-I mediated detection of bacterial nucleic acids in human microglial cells. J Neuroinflammation 2020; 17:139. [PMID: 32357908 PMCID: PMC7195775 DOI: 10.1186/s12974-020-01817-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 04/16/2020] [Indexed: 12/13/2022] Open
Abstract
Background Bacterial meningitis and meningoencephalitis are associated with devastating neuroinflammation. We and others have demonstrated the importance of glial cells in the initiation of immune responses to pathogens invading the central nervous system (CNS). These cells use a variety of pattern recognition receptors (PRRs) to identify common pathogen motifs and the cytosolic sensor retinoic acid inducible gene-1 (RIG-I) is known to serve as a viral PRR and initiator of interferon (IFN) responses. Intriguingly, recent evidence indicates that RIG-I also has an important role in the detection of bacterial nucleic acids, but such a role has not been investigated in glia. Methods In this study, we have assessed whether primary or immortalized human and murine glia express RIG-I either constitutively or following stimulation with bacteria or their products by immunoblot analysis. We have used capture ELISAs and immunoblot analysis to assess human microglial interferon regulatory factor 3 (IRF3) activation and IFN production elicited by bacterial nucleic acids and novel engineered nucleic acid nanoparticles. Furthermore, we have utilized a pharmacological inhibitor of RIG-I signaling and siRNA-mediated knockdown approaches to assess the relative importance of RIG-I in such responses. Results We demonstrate that RIG-I is constitutively expressed by human and murine microglia and astrocytes, and is elevated following bacterial infection in a pathogen and cell type-specific manner. Additionally, surface and cytosolic PRR ligands are also sufficient to enhance RIG-I expression. Importantly, our data demonstrate that bacterial RNA and DNA both trigger RIG-I-dependent IRF3 phosphorylation and subsequent type I IFN production in human microglia. This ability has been confirmed using our nucleic acid nanoparticles where we demonstrate that both RNA- and DNA-based nanoparticles can stimulate RIG-I-dependent IFN responses in these cells. Conclusions The constitutive and bacteria-induced expression of RIG-I by human glia and its ability to mediate IFN responses to bacterial RNA and DNA and nucleic acid nanoparticles raises the intriguing possibility that RIG-I may be a potential target for therapeutic intervention during bacterial infections of the CNS, and that the use of engineered nucleic acid nanoparticles that engage this sensor might be a method to achieve this goal.
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Affiliation(s)
- M Brittany Johnson
- Department of Biological Sciences, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC, 28223, USA
| | - Justin R Halman
- Nanoscale Science Program, Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
| | - Amanda R Burmeister
- Center for Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI, 49503, USA
| | - Saralynn Currin
- Department of Biological Sciences, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC, 28223, USA
| | | | - Kirill A Afonin
- Nanoscale Science Program, Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
| | - Ian Marriott
- Department of Biological Sciences, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC, 28223, USA.
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Yang X, Yu D, Xue L, Li H, Du J. Probiotics modulate the microbiota-gut-brain axis and improve memory deficits in aged SAMP8 mice. Acta Pharm Sin B 2020; 10:475-487. [PMID: 32140393 PMCID: PMC7049608 DOI: 10.1016/j.apsb.2019.07.001] [Citation(s) in RCA: 191] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 05/08/2019] [Accepted: 05/15/2019] [Indexed: 12/12/2022] Open
Abstract
ProBiotic-4 is a probiotic preparation composed of Bifidobacterium lactis, Lactobacillus casei, Bifidobacterium bifidum, and Lactobacillus acidophilus. This study aims to investigate the effects of ProBiotic-4 on the microbiota–gut–brain axis and cognitive deficits, and to explore the underlying molecular mechanism using senescence-accelerated mouse prone 8 (SAMP8) mice. ProBiotic-4 was orally administered to 9-month-old SAMP8 mice for 12 weeks. We observed that ProBiotic-4 significantly improved the memory deficits, cerebral neuronal and synaptic injuries, glial activation, and microbiota composition in the feces and brains of aged SAMP8 mice. ProBiotic-4 substantially attenuated aging-related disruption of the intestinal barrier and blood–brain barrier, decreased interleukin-6 and tumor necrosis factor-α at both mRNA and protein levels, reduced plasma and cerebral lipopolysaccharide (LPS) concentration, toll-like receptor 4 (TLR4) expression, and nuclear factor-κB (NF-κB) nuclear translocation in the brain. In addition, not only did ProBiotic-4 significantly decreased the levels of γ-H2AX, 8-hydroxydesoxyguanosine, and retinoic-acid-inducible gene-I (RIG-I), it also abrogated RIG-I multimerization in the brain. These findings suggest that targeting gut microbiota with probiotics may have a therapeutic potential for the deficits of the microbiota–gut–brain axis and cognitive function in aging, and that its mechanism is associated with inhibition of both TLR4-and RIG-I-mediated NF-κB signaling pathway and inflammatory responses.
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Key Words
- 8-OHdG, 8-hydroxydesoxyguanosine
- AAMI, age-associated memory impairment
- AD, Alzheimer's disease
- BBB, blood–brain barrier
- CFU, colony-forming units
- Cognitive decline
- ELISA, enzyme-linked immunosorbent assay
- F/B, Firmicutes/Bacteroidetes
- GFAP, glial fibrillary acidic protein
- HE, hematoxylin and eosin
- IHC, immunohistochemistry
- IL-6, interleukin-6
- Iba-1, ionized calcium binding adaptor molecule-1
- LPS, lipopolysaccharide
- MCI, mild cognitive impairment
- Microbiota–gut–brain axis
- NF-κB
- NF-κB, nuclear factor-κB
- NMDS, non-metric multidimensional scaling
- OTU, operational taxonomic unit
- PAMP, pathogen-associated molecular pattern
- Probiotics
- RIG-I
- RIG-I, retinoic-acid-inducible gene-I
- SAMP8 mice
- SAMP8, senescence-accelerated mouse prone 8
- SYN, synaptophysin
- TEM, transmission electron microscopy
- TLR4
- TLR4, toll-like receptor 4
- TNF-α, tumor necrosis factor-α
- VE-cadherin, vascular endothelial-cadherin
- ZO-1, zona occluden-1
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5
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Boltjes A, Movita D, Boonstra A, Woltman AM. The role of Kupffer cells in hepatitis B and hepatitis C virus infections. J Hepatol 2014; 61:660-71. [PMID: 24798624 DOI: 10.1016/j.jhep.2014.04.026] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Revised: 04/04/2014] [Accepted: 04/25/2014] [Indexed: 12/12/2022]
Abstract
Globally, over 500 million people are chronically infected with the hepatitis B virus (HBV) or hepatitis C virus (HCV). These chronic infections cause liver inflammation, and may result in fibrosis/cirrhosis or hepatocellular carcinoma. Albeit that HBV and HCV differ in various aspects, clearance, persistence, and immunopathology of either infection depends on the interplay between the innate and adaptive responses in the liver. Kupffer cells, the liver-resident macrophages, are abundantly present in the sinusoids of the liver. These cells have been shown to be crucial players to maintain homeostasis, but also contribute to pathology. However, it is important to note that especially during pathology, Kupffer cells are difficult to distinguish from infiltrating monocytes/macrophages and other myeloid cells. In this review we discuss our current understanding of Kupffer cells, and assess their role in the regulation of anti-viral immunity and disease pathogenesis during HBV and HCV infection.
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Affiliation(s)
- Arjan Boltjes
- Dept. of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Dowty Movita
- Dept. of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - André Boonstra
- Dept. of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Andrea M Woltman
- Dept. of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.
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6
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Du Z, Yang H, Tan Y, Tian G, Zhang Q, Cui Y, Yanfeng Yan, Wu X, Chen Z, Cao S, Bi Y, Han Y, Wang X, Song Y, Yang R. Transcriptomic response to Yersinia pestis: RIG-I like receptor signaling response is detrimental to the host against plague. J Genet Genomics 2014; 41:379-96. [PMID: 25064677 DOI: 10.1016/j.jgg.2014.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 05/09/2014] [Accepted: 05/14/2014] [Indexed: 02/07/2023]
Abstract
Bacterial pathogens have evolved various mechanisms to modulate host immune responses for successful infection. In this study, RNA-sequencing technology was used to analyze the responses of human monocytes THP1 to Yersinia pestis infection. Over 6000 genes were differentially expressed over the 12 h infection. Kinetic responses of pathogen recognition receptor signaling pathways, apoptosis, antigen processing, and presentation pathway and coagulation system were analyzed in detail. Among them, RIG-I-like receptor (RLR) signaling pathway, which was established for antiviral defense, was significantly affected. Mice lacking MAVS, the adaptor of the RLR signaling pathway, were less sensitive to infection and exhibited lower IFN-β production, higher Th1-type cytokines IFN-γ and IL-12 production, and lower Th2-type cytokines IL-4 and IL-13 production in the serum compared with wild-type mice. Moreover, infection of pathogenic bacteria other than Y. pestis also altered the expression of the RLR pathway, suggesting that the response of RLR pathway to bacterial infection is a universal mechanism.
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Affiliation(s)
- Zongmin Du
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China.
| | - Huiying Yang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yafang Tan
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Guang Tian
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Qingwen Zhang
- Qinghai Institute for Endemic Disease Prevention and Control of Qinghai Province, Xining 811602, China
| | - Yujun Cui
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yanfeng Yan
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Xiaohong Wu
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | | | - Shiyang Cao
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yujing Bi
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yanping Han
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Xiaoyi Wang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yajun Song
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Ruifu Yang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China.
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7
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Kupffer Cells in Health and Disease. MACROPHAGES: BIOLOGY AND ROLE IN THE PATHOLOGY OF DISEASES 2014. [PMCID: PMC7121975 DOI: 10.1007/978-1-4939-1311-4_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Kupffer cells (KC), the resident macrophages of the liver, represent the largest population of mononuclear phagocytes in the body. Phenotypic, developmental, and functional aspects of these cells in steady state and in different diseases are the focus of this review. Recently it has become evident that KC precursors seed the liver already early in fetal development, and the population can be maintained independently from circulating monocytes. However, inflammatory conditions allow rapid differentiation of monocytes into mature cells that are indistinguishable from genuine KC. KC are located in the lumen of sinusoids that receive blood both from the portal vein, carrying nutrients and microbial products from the gut, and from the hepatic artery. This positions KC ideally for their prime function, namely surveillance and clearance of the circulation. As such, they are important in iron recycling by phagocytosing effete erythrocytes, for instance. The immunophenotype of KC, characterized by a wide variety of endocytic receptors, is indicative of this scavenger function. In maintaining homeostasis, KC have an ambivalent response to exogenous triggers. On the one hand, their surveillance function requires alert responses to potentially hazardous substances. On the other hand, continuous exposure of the cells to the trigger-rich content of blood originating from the gut dampens their responsiveness to further stimuli. This ambivalence is also reflected in their diverse roles in disease pathogenesis. For the latter, we sketch the contribution of KC by giving examples of their role in metabolic disease, infections, and liver injury.
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8
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Stavru F, Archambaud C, Cossart P. Cell biology and immunology of Listeria monocytogenes infections: novel insights. Immunol Rev 2011; 240:160-84. [DOI: 10.1111/j.1600-065x.2010.00993.x] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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9
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Abstract
Antiviral innate immunity is triggered by sensing viral nucleic acids. RIG-I (retinoic acid-inducible gene-I) is an intracellular molecule that responds to viral nucleic acids and activates downstream signaling, resulting in the induction of members of the type I interferon (IFN) family, which are regarded among the most important effectors of the innate immune system. Although RIG-I is expressed ubiquitously in the cytoplasm, its levels are subject to transcriptional and post-transcriptional regulation. RIG-I belongs to the IFN-stimulated gene (ISG) family, but certain cells regulate its expression through IFN-independent mechanisms. Several lines of evidence indicate that deregulated RIG-I signaling is associated with autoimmune disorders. Further studies suggest that RIG-I has functions in addition to those directly related to its role in RNA sensing and host defense. We have much to learn and discover regarding this interesting cytoplasmic sensor so that we can capitalize on its properties for the treatment of viral infections, immune disorders, cancer, and perhaps other conditions.
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Affiliation(s)
- Tomoh Matsumiya
- Department of Vascular Biology, Institute of Brain Science, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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10
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Luber CA, Cox J, Lauterbach H, Fancke B, Selbach M, Tschopp J, Akira S, Wiegand M, Hochrein H, O'Keeffe M, Mann M. Quantitative proteomics reveals subset-specific viral recognition in dendritic cells. Immunity 2010; 32:279-89. [PMID: 20171123 DOI: 10.1016/j.immuni.2010.01.013] [Citation(s) in RCA: 447] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2009] [Revised: 12/18/2009] [Accepted: 01/26/2010] [Indexed: 02/07/2023]
Abstract
Dendritic cell (DC) populations consist of multiple subsets that are essential orchestrators of the immune system. Technological limitations have so far prevented systems-wide accurate proteome comparison of rare cell populations in vivo. Here, we used high-resolution mass spectrometry-based proteomics, combined with label-free quantitation algorithms, to determine the proteome of mouse splenic conventional and plasmacytoid DC subsets to a depth of 5,780 and 6,664 proteins, respectively. We found mutually exclusive expression of pattern recognition pathways not previously known to be different among conventional DC subsets. Our experiments assigned key viral recognition functions to be exclusively expressed in CD4(+) and double-negative DCs. The CD8alpha(+) DCs largely lack the receptors required to sense certain viruses in the cytoplasm. By avoiding activation via cytoplasmic receptors, including retinoic acid-inducible gene I, CD8alpha(+) DCs likely gain a window of opportunity to process and present viral antigens before activation-induced shutdown of antigen presentation pathways occurs.
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Affiliation(s)
- Christian A Luber
- Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, D-82152 Martinsried, Germany
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Philbin VJ, Levy O. Developmental biology of the innate immune response: implications for neonatal and infant vaccine development. Pediatr Res 2009; 65:98R-105R. [PMID: 19918215 PMCID: PMC2795575 DOI: 10.1203/pdr.0b013e31819f195d] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Molecular characterization of mechanisms by which human pattern recognition receptors (PRRs) detect danger signals has greatly expanded our understanding of the innate immune system. PRRs include Toll-like receptors, nucleotide oligomerization domain-like receptors, retinoic acid inducible gene-like receptors, and C-type lectin receptors. Characterization of the developmental expression of these systems in the fetus, newborn, and infant is incomplete but has yielded important insights into neonatal susceptibility to infection. Activation of PRRs on antigen-presenting cells enhances costimulatory function, and thus PRR agonists are potential vaccine adjuvants, some of which are already in clinical use. Thus, study of PRRs has also revealed how previously mysterious immunomodulators are able to mediate their actions, including the vaccine adjuvant aluminum hydroxide that activates a cytosolic protein complex known as the Nacht domain leucine-rich repeat and pyrin domain-containing protein 3 inflammasome leading to interleukin-1beta production. Progress in characterizing PRRs is thus informing and expanding the design of improved adjuvants. This review summarizes recent developments in the field of innate immunity emphasizing developmental expression in the fetus, newborn, and infant and its implications for the design of more effective neonatal and infant vaccines.
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Affiliation(s)
- Victoria Jane Philbin
- Department of Medicine, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts 02115, USA
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12
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Imaizumi T, Matsumiya T, Yoshida H, Naraoka T, Uesato R, Ishibashi Y, Ota K, Toh S, Fukuda S, Satoh K. Tumor-necrosis factor-alpha induces retinoic acid-inducible gene-I in rheumatoid fibroblast-like synoviocytes. Immunol Lett 2009; 122:89-93. [PMID: 19126414 DOI: 10.1016/j.imlet.2008.12.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2008] [Revised: 12/01/2008] [Accepted: 12/06/2008] [Indexed: 10/21/2022]
Abstract
Tumor-necrosis factor-alpha (TNF-alpha) is a potent proinflammtory cytokine and a key molecule in the pathogenesis of rheumatoid arthritis (RA). Retinoic acid-inducible gene-I (RIG-I) is a DExH box protein, which is known to play a role in the inflammatory and immune reactions. We previously reported about potential involvement of RIG-I in synovial inflammation in RA. In the present study, we demonstrated the expression of RIG-I in fibroblast-like synoviocytes stimulated with TNF-alpha. RNA interference against interferon (IFN)-beta abolished the TNF-alpha-induced RIG-I expression. In addition, knockdown of RIG-I partially inhibited the TNF-alpha-induced expression of CC chemokine ligand (CCL) 5, a chemokine with chemotactic activity toward lymphocytes and monocytes. These findings suggest that the TNF-alpha/IFN-beta/RIG-I/CCL5 pathway may be involved in the pathogenesis of synovial inflammation in RA.
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Affiliation(s)
- Tadaatsu Imaizumi
- Department of Vascular Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
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13
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Yuzawa E, Imaizumi T, Matsumiya T, Yoshida H, Fukuhara R, Kimura H, Fukui A, Tanji K, Mori F, Wakabayashi K, Fujii S, Mizunuma H, Satoh K. Retinoic acid-inducible gene-I is induced by interferon-gamma and regulates CXCL11 expression in HeLa cells. Life Sci 2008; 82:670-5. [PMID: 18258269 DOI: 10.1016/j.lfs.2007.12.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2007] [Revised: 12/06/2007] [Accepted: 12/20/2007] [Indexed: 01/21/2023]
Abstract
Retinoic acid-inducible gene-I (RIG-I) is a member of the DExH box family proteins, which have diverse roles in the regulation of gene expression and cellular functions. RIG-I is one of the factors regulated by interferon (IFN)-gamma and regarded as an intracellular signaling molecule for IFN-gamma. IFN-gamma is a major cytokine and also suggested to be involved in embryonal implantation and pregnancy. It is demonstrated that IFN-gamma stimulates endometrial epithelial cells to produce CXCL11, which is implicated in implantation. The aim of the present study was to investigate the effect of IFN-gamma on RIG-I expression in HeLa cells, a cell line derived from human uterine carcinoma. We found that RIG-I mRNA and protein were expressed in HeLa cells stimulated with IFN-gamma. The effect of IFN-gamma was observed in concentration- and time-dependent manners. The RNA interference against RIG-I resulted in the suppression of the IFN-gamma-induced CXCL11 expression. Immunohistochemical studies revealed the RIG-I expression in the normal human endometrium, suggesting a possible role of RIG-I in human reproductive organs.
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Affiliation(s)
- Ei Yuzawa
- Department of Obstetrics and Gynecology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan.
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Sato F, Imaizumi T, Sashinami H, Yoshida H, Kusumi T, Mori F, Wakabayashi K, Nakane A, Satoh K, Kijima H. Upregulation of vascular endothelial growth factor by heat-killed Listeria monocytogenes in macrophages. Biochem Biophys Res Commun 2007; 354:608-12. [PMID: 17240354 DOI: 10.1016/j.bbrc.2007.01.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2006] [Accepted: 01/07/2007] [Indexed: 11/28/2022]
Abstract
We investigated the effect of heat-killed Listeria monocytogenes (HKLM) on the expression of vascular endothelial growth factor (VEGF) in RAW264.7 macrophage-like cells. The expression of VEGF was induced in RAW264.7 cells treated with HKLM. Pretreatment of cells with cycloheximide, a protein synthesis inhibitor, inhibited the induction of VEGF mRNA by HKLM. Induction of VEGF by HKLM was partially inhibited by treatment of cells with SB203580, a p38 mitogen-activated protein kinase (MAPK) inhibitor, or a neutralizing antibody against tumor necrosis factor-alpha (TNF-alpha). In addition, HKLM induced phosphorylation of p38 MAPK. These results suggest that p38 MAPK and TNF-alpha are involved in the VEGF expression induced by HKLM in RAW264.7 cells. We confirmed that increased VEGF expression is immunohistochemically detected in splenic macrophages of mice infected with L. monocytogenes (L. monocytogenes). VEGF is thought to be involved in inflammatory reactions induced by L. monocytogenes infection.
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Affiliation(s)
- Fuyuki Sato
- Department of Pathology, Hirosaki University School of Medicine, Hirosaki 036-8562, Japan.
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