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Ramalho T, Assis PA, Ojelabi O, Tan L, Carvalho B, Gardinassi L, Campos O, Lorenzi PL, Fitzgerald KA, Haynes C, Golenbock DT, Gazzinelli RT. Itaconate impairs immune control of Plasmodium by enhancing mtDNA-mediated PD-L1 expression in monocyte-derived dendritic cells. Cell Metab 2024; 36:484-497.e6. [PMID: 38325373 PMCID: PMC10940217 DOI: 10.1016/j.cmet.2024.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 10/27/2023] [Accepted: 01/14/2024] [Indexed: 02/09/2024]
Abstract
Severe forms of malaria are associated with systemic inflammation and host metabolism disorders; however, the interplay between these outcomes is poorly understood. Using a Plasmodium chabaudi model of malaria, we demonstrate that interferon (IFN) γ boosts glycolysis in splenic monocyte-derived dendritic cells (MODCs), leading to itaconate accumulation and disruption in the TCA cycle. Increased itaconate levels reduce mitochondrial functionality, which associates with organellar nucleic acid release and MODC restraint. We hypothesize that dysfunctional mitochondria release degraded DNA into the cytosol. Once mitochondrial DNA is sensitized, the activation of IRF3 and IRF7 promotes the expression of IFN-stimulated genes and checkpoint markers. Indeed, depletion of the STING-IRF3/IRF7 axis reduces PD-L1 expression, enabling activation of CD8+ T cells that control parasite proliferation. In summary, mitochondrial disruption caused by itaconate in MODCs leads to a suppressive effect in CD8+ T cells, which enhances parasitemia. We provide evidence that ACOD1 and itaconate are potential targets for adjunct antimalarial therapy.
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Affiliation(s)
- Theresa Ramalho
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA; Department of Molecular Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA.
| | - Patricia A Assis
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Ogooluwa Ojelabi
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Lin Tan
- Department of Bioinformatics and Computational Biology, University of Texas MD Cancer Center, Houston, TX, USA
| | - Brener Carvalho
- Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
| | - Luiz Gardinassi
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Brazil
| | - Osvaldo Campos
- Plataforma de Medicina Translacional, Fundação Oswaldo Cruz/Faculdade de Medicina de Ribeirao Preto, Ribeirao Preto, Sao Paulo, Brazil
| | - Philip L Lorenzi
- Department of Bioinformatics and Computational Biology, University of Texas MD Cancer Center, Houston, TX, USA
| | - Katherine A Fitzgerald
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Cole Haynes
- Department of Molecular Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Douglas T Golenbock
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Ricardo T Gazzinelli
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA; Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil; Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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Pereira M, Ramalho T, Andrade WA, Durso DF, Souza MC, Fitzgerald KA, Golenbock DT, Silverman N, Gazzinelli RT. The IRAK1/IRF5 axis initiates IL-12 response by dendritic cells and control of Toxoplasma gondii infection. Cell Rep 2024; 43:113795. [PMID: 38367238 DOI: 10.1016/j.celrep.2024.113795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/19/2023] [Accepted: 01/30/2024] [Indexed: 02/19/2024] Open
Abstract
Activation of endosomal Toll-like receptor (TLR) 7, TLR9, and TLR11/12 is a key event in the resistance against the parasite Toxoplasma gondii. Endosomal TLR engagement leads to expression of interleukin (IL)-12 via the myddosome, a protein complex containing MyD88 and IL-1 receptor-associated kinase (IRAK) 4 in addition to IRAK1 or IRAK2. In murine macrophages, IRAK2 is essential for IL-12 production via endosomal TLRs but, surprisingly, Irak2-/- mice are only slightly susceptible to T. gondii infection, similar to Irak1-/- mice. Here, we report that upon T. gondii infection IL-12 production by different cell populations requires either IRAK1 or IRAK2, with conventional dendritic cells (DCs) requiring IRAK1 and monocyte-derived DCs (MO-DCs) requiring IRAK2. In both populations, we identify interferon regulatory factor 5 as the main transcription factor driving the myddosome-dependent IL-12 production during T. gondii infection. Consistent with a redundant role of DCs and MO-DCs, mutations that affect IL-12 production in both cell populations show high susceptibility to infection in vivo.
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Affiliation(s)
- Milton Pereira
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA.
| | - Theresa Ramalho
- Department of Molecular, Cell, and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Warrison A Andrade
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Danielle F Durso
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Maria C Souza
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Katherine A Fitzgerald
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Douglas T Golenbock
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Neal Silverman
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Ricardo T Gazzinelli
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA; Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil.
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de Carvalho Ribeiro M, Iracheta-Vellve A, Babuta M, Calenda CD, Copeland C, Zhuang Y, Lowe PP, Hawryluk D, Catalano D, Cho Y, Barton B, Dasarathy S, McClain C, McCullough AJ, Mitchell MC, Nagy LE, Radaeva S, Lien E, Golenbock DT, Szabo G. Alcohol-induced extracellular ASC specks perpetuate liver inflammation and damage in alcohol-associated hepatitis even after alcohol cessation. Hepatology 2023; 78:225-242. [PMID: 36862512 DOI: 10.1097/hep.0000000000000298] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 12/19/2022] [Indexed: 03/03/2023]
Abstract
BACKGROUND AIMS Prolonged systemic inflammation contributes to poor clinical outcomes in severe alcohol-associated hepatitis (AH) even after the cessation of alcohol use. However, mechanisms leading to this persistent inflammation remain to be understood. APPROACH RESULTS We show that while chronic alcohol induces nucleotide-binding oligomerization domain-like receptor family, pyrin domain containing 3 (NLRP3) inflammasome activation in the liver, alcohol binge results not only in NLRP3 inflammasome activation but also in increased circulating extracellular apoptosis-associated speck-like protein containing a caspase recruitment domain (ex-ASC) specks and hepatic ASC aggregates both in patients with AH and in mouse models of AH. These ex-ASC specks persist in circulation even after the cessation of alcohol use. Administration of alcohol-induced-ex-ASC specks in vivo in alcohol-naive mice results in sustained inflammation in the liver and circulation and causes liver damage. Consistent with the key role of ex-ASC specks in mediating liver injury and inflammation, alcohol binge failed to induce liver damage or IL-1β release in ASC-deficient mice. Our data show that alcohol induces ex-ASC specks in liver macrophages and hepatocytes, and these ex-ASC specks can trigger IL-1β release in alcohol-naive monocytes, a process that can be prevented by the NLRP3 inhibitor, MCC950. In vivo administration of MCC950 reduced hepatic and ex-ASC specks, caspase-1 activation, IL-1β production, and steatohepatitis in a murine model of AH. CONCLUSIONS Our study demonstrates the central role of NLRP3 and ASC in alcohol-induced liver inflammation and unravels the critical role of ex-ASC specks in the propagation of systemic and liver inflammation in AH. Our data also identify NLRP3 as a potential therapeutic target in AH.
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Affiliation(s)
- Marcelle de Carvalho Ribeiro
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Arvin Iracheta-Vellve
- Monte Rosa Therapeutics, Boston, Massachusetts, 02210, USA
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Mrigya Babuta
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Charles D Calenda
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Christopher Copeland
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Yuan Zhuang
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Patrick P Lowe
- Brigham and Women's General Hospital, Boston, Massachusetts, USA
| | - Danielle Hawryluk
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Donna Catalano
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Yeonhee Cho
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Bruce Barton
- Department of Population and Quantitative Health Sciences, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Srinivasan Dasarathy
- Center for Microbiome and Human Health, Lerner Research Institute of the Cleveland Clinic, Cleveland, Ohio, USA
- Department of Inflammation and Immunity, Lerner Research Institute of the Cleveland Clinic, Cleveland, Ohio, USA
| | - Craig McClain
- Division of Gastroenterology, University of Louisville, Louisville, Kentucky, USA
| | - Arthur J McCullough
- Department of Gastroenterology, Hepatology and Nutrition, Cleveland Clinic, Cleveland, Ohio, USA
| | - Mack C Mitchell
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Laura E Nagy
- Center for Microbiome and Human Health, Lerner Research Institute of the Cleveland Clinic, Cleveland, Ohio, USA
- Department of Inflammation and Immunity, Lerner Research Institute of the Cleveland Clinic, Cleveland, Ohio, USA
| | - Svetlana Radaeva
- National Institute on Alcohol Abuse and Alcoholism, Bethesda, Maryland, USA
| | - Egil Lien
- Department of Medicine, Division of INfectious Diseases and Immunology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Douglas T Golenbock
- Department of Medicine, Division of INfectious Diseases and Immunology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Gyongyi Szabo
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
- Broad Institute of MIT and Harvard, Massachusetts, USA
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Torres K, Ferreira MU, Castro MC, Escalante AA, Conn JE, Villasis E, da Silva Araujo M, Almeida G, Rodrigues PT, Corder RM, Fernandes ARJ, Calil PR, Ladeia WA, Garcia-Castillo SS, Gomez J, do Valle Antonelli LR, Gazzinelli RT, Golenbock DT, Llanos-Cuentas A, Gamboa D, Vinetz JM. Malaria Resilience in South America: Epidemiology, Vector Biology, and Immunology Insights from the Amazonian International Center of Excellence in Malaria Research Network in Peru and Brazil. Am J Trop Med Hyg 2022; 107:168-181. [PMID: 36228921 PMCID: PMC9662219 DOI: 10.4269/ajtmh.22-0127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/28/2022] [Indexed: 11/07/2022] Open
Abstract
The 1990s saw the rapid reemergence of malaria in Amazonia, where it remains an important public health priority in South America. The Amazonian International Center of Excellence in Malaria Research (ICEMR) was designed to take a multidisciplinary approach toward identifying novel malaria control and elimination strategies. Based on geographically and epidemiologically distinct sites in the Northeastern Peruvian and Western Brazilian Amazon regions, synergistic projects integrate malaria epidemiology, vector biology, and immunology. The Amazonian ICEMR's overarching goal is to understand how human behavior and other sociodemographic features of human reservoirs of transmission-predominantly asymptomatically parasitemic people-interact with the major Amazonian malaria vector, Nyssorhynchus (formerly Anopheles) darlingi, and with human immune responses to maintain malaria resilience and continued endemicity in a hypoendemic setting. Here, we will review Amazonian ICEMR's achievements on the synergies among malaria epidemiology, Plasmodium-vector interactions, and immune response, and how those provide a roadmap for further research, and, most importantly, point toward how to achieve malaria control and elimination in the Americas.
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Affiliation(s)
- Katherine Torres
- Institute of Tropical Medicine Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Marcelo U. Ferreira
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
| | - Marcia C. Castro
- Department of Global Health and Population, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Ananias A. Escalante
- Department of Biology and Institute for Genomics and Evolutionary Medicine, Temple University, Philadelphia, Pennsylvania
| | - Jan E. Conn
- Department of Biomedical Sciences, School of Public Health, University at Albany, State University of New York, Albany, New York
- Wadsworth Center, New York State Department of Health, Albany, New York
| | - Elizabeth Villasis
- Institute of Tropical Medicine Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
| | | | - Gregorio Almeida
- Instituto de Pesquisas Rene Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
| | - Priscila T. Rodrigues
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
| | - Rodrigo M. Corder
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
| | - Anderson R. J. Fernandes
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
| | - Priscila R. Calil
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
| | - Winni A. Ladeia
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
| | - Stefano S. Garcia-Castillo
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Joaquin Gomez
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
| | | | - Ricardo T. Gazzinelli
- Instituto de Pesquisas Rene Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
- Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Douglas T. Golenbock
- Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Alejandro Llanos-Cuentas
- Institute of Tropical Medicine Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Dionicia Gamboa
- Institute of Tropical Medicine Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Joseph M. Vinetz
- Institute of Tropical Medicine Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
- Section of Infectious Diseases, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
- Address correspondence to Joseph M. Vinetz, Section of Infectious Diseases, Department of Internal Medicine, Yale School of Medicine, 25 York St., Winchester 403D, PO Box 802022, New Haven, CT 06520. E-mail:
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5
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Pereira M, Durso DF, Bryant CE, Kurt-Jones EA, Silverman N, Golenbock DT, Gazzinelli RT. The IRAK4 scaffold integrates TLR4-driven TRIF and MYD88 signaling pathways. Cell Rep 2022; 40:111225. [PMID: 35977521 PMCID: PMC9446533 DOI: 10.1016/j.celrep.2022.111225] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/17/2022] [Accepted: 07/26/2022] [Indexed: 11/15/2022] Open
Abstract
Interleukin-1 receptor-associated kinases (IRAKs) -4, -2, and -1 are involved in transducing signals from Toll-like receptors (TLRs) via the adaptor myeloid differentiation primary-response protein 88 (MYD88). How MYD88/IRAK4/2/1 complexes are formed, their redundancies, and potential non-enzymatic roles are subjects of debate. Here, we examine the hierarchical requirements for IRAK proteins in the context of TLR4 activation and confirmed that the kinase activity of IRAK4 is essential for MYD88 signaling. Surprisingly, the IRAK4 scaffold is required for activation of the E3 ubiquitin ligase TNF receptor-associated factor 6 (TRAF6) by both MYD88 and TIR domain-containing adaptor protein inducing IFN-β (TRIF), a unique adaptation in the TLR4 response. IRAK4 scaffold is, therefore, essential in integrating MYD88 and TRIF in TLR4 signaling.
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Affiliation(s)
- Milton Pereira
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA.
| | - Danielle F Durso
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Clare E Bryant
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Evelyn A Kurt-Jones
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Neal Silverman
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Douglas T Golenbock
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Ricardo T Gazzinelli
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA; Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Fundação Oswaldo Cruz, Belo Horizonte, MG, Brazil; Plataforma de Medicina Translacional, Fundação Oswaldo Cruz, Ribeirão Preto, SP, Brazil.
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6
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Crabtree JN, Caffrey DR, de Souza Silva L, Kurt-Jones EA, Dobbs K, Dent A, Fitzgerald KA, Golenbock DT. Lymphocyte crosstalk is required for monocyte-intrinsic trained immunity to Plasmodium falciparum. J Clin Invest 2022; 132:e139298. [PMID: 35642634 PMCID: PMC9151696 DOI: 10.1172/jci139298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 04/21/2022] [Indexed: 01/16/2023] Open
Abstract
Plasmodium falciparum (P. falciparum) induces trained innate immune responses in vitro, where initial stimulation of adherent PBMCs with P. falciparum-infected RBCs (iRBCs) results in hyperresponsiveness to subsequent ligation of TLR2. This response correlates with the presence of T and B lymphocytes in adherent PBMCs, suggesting that innate immune training is partially due to adaptive immunity. We found that T cell-depleted PBMCs and purified monocytes alone did not elicit hyperproduction of IL-6 and TNF-α under training conditions. Analysis of P. falciparum-trained PBMCs showed that DCs did not develop under control conditions, and IL-6 and TNF-α were primarily produced by monocytes and DCs. Transwell experiments isolating purified monocytes from either PBMCs or purified CD4+ T cells, but allowing diffusion of secreted proteins, enabled monocytes trained with iRBCs to hyperproduce IL-6 and TNF-α after TLR restimulation. Purified monocytes stimulated with IFN-γ hyperproduced IL-6 and TNF-α, whereas blockade of IFN-γ in P. falciparum-trained PBMCs inhibited trained responses. Assay for transposase-accessible chromatin with high-throughput sequencing (ATAC-Seq) on monocytes from patients with malaria showed persistently open chromatin at genes that appeared to be trained in vitro. Together, these findings indicate that the trained immune response of monocytes to P. falciparum is not completely cell intrinsic but depends on soluble signals from lymphocytes.
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Affiliation(s)
- Juliet N Crabtree
- Program in Innate Immunity and
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Daniel R Caffrey
- Program in Innate Immunity and
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Leandro de Souza Silva
- Program in Innate Immunity and
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Evelyn A Kurt-Jones
- Program in Innate Immunity and
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | | | - Arlene Dent
- Case Western University, Cleveland, Ohio, USA
| | - Katherine A Fitzgerald
- Program in Innate Immunity and
- Division of Innate Immunity, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Douglas T Golenbock
- Program in Innate Immunity and
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
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7
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Morales Y, Miller EA, Shecter I, Fitzgerald KA, Golenbock DT, Stadecker MJ, Kalantari P. NLRP3 and AIM2 inflammasome-triggered Th17 cell response promotes severe immunopathology in schistosomiasis. The Journal of Immunology 2021. [DOI: 10.4049/jimmunol.206.supp.112.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Abstract
Infection with the helminth Schistosoma mansoni can cause exacerbated morbidity and mortality via a pathogenic host CD4 T cell-mediated immune response directed against parasite egg antigens, with T helper (Th) 17 cells playing a major role in the development of increased granulomatous hepatic immunopathology. A role of inflammasomes in intensifying disease has been reported, however, neither the types of inflammasomes involved, nor their impact on the Th17 response are known. Here we show that the observed enhanced egg-induced IL-1β secretion and pyroptotic cell death required both NLRP3 and AIM2 inflammasome activation. Schistosome genomic DNA activated AIM2, whereas reactive oxygen species, as well as potassium efflux, were the major activators of NLRP3. In addition, dual activation of caspase-1 and caspase-8 was required for egg-induced IL17 production. NLRP3 and AIM2 deficiency led to a significant reduction in Th17 responses, suggesting that both play a crucial role in triggering inflammation. We also determined that inflammasome-induced IL-1β promotes the anti-inflammatory Th2 cytokine IL-4. Our findings establish NLRP3 and AIM2 inflammasomes as central inducers of pathogenic Th17 responses in schistosomiasis.
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8
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Chen X, Yang X, de Anda J, Huang J, Li D, Xu H, Shields KS, Džunková M, Hansen J, Patel IJ, Yee EU, Golenbock DT, Grant MA, Wong GCL, Kelly CP. Clostridioides difficile Toxin A Remodels Membranes and Mediates DNA Entry Into Cells to Activate Toll-Like Receptor 9 Signaling. Gastroenterology 2020; 159:2181-2192.e1. [PMID: 32841647 PMCID: PMC8720510 DOI: 10.1053/j.gastro.2020.08.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/31/2020] [Accepted: 08/18/2020] [Indexed: 01/05/2023]
Abstract
BACKGROUND & AIMS Clostridioides difficile toxin A (TcdA) activates the innate immune response. TcdA co-purifies with DNA. Toll-like receptor 9 (TLR9) recognizes bacterial DNA to initiate inflammation. We investigated whether DNA bound to TcdA activates an inflammatory response in murine models of C difficile infection via activation of TLR9. METHODS We performed studies with human colonocytes and monocytes and macrophages from wild-type and TLR9 knockout mice incubated with TcdA or its antagonist (ODN TTAGGG) or transduced with vectors encoding TLR9 or small-interfering RNAs. Cytokine production was measured with enzyme-linked immunosorbent assay. We studied a transduction domain of TcdA (TcdA57-80), which was predicted by machine learning to have cell-penetrating activity and confirmed by synchrotron small-angle X-ray scattering. Intestines of CD1 mice, C57BL6J mice, and mice that express a form of TLR9 that is not activated by CpG DNA were injected with TcdA, TLR9 antagonist, or both. Enterotoxicity was estimated based on loop weight to length ratios. A TLR9 antagonist was tested in mice infected with C difficile. We incubated human colon explants with an antagonist of TLR9 and measured TcdA-induced production of cytokines. RESULTS The TcdA57-80 protein transduction domain had membrane remodeling activity that allowed TcdA to enter endosomes. TcdA-bound DNA entered human colonocytes. TLR9 was required for production of cytokines by cultured cells and in human colon explants incubated with TcdA. TLR9 was required in TcdA-induced mice intestinal secretions and in the survival of mice infected by C difficile. Even in a protease-rich environment, in which only fragments of TcdA exist, the TcdA57-80 domain organized DNA into a geometrically ordered structure that activated TLR9. CONCLUSIONS TcdA from C difficile can bind and organize bacterial DNA to activate TLR9. TcdA and TcdA fragments remodel membranes, which allows them to access endosomes and present bacterial DNA to and activate TLR9. Rather than inactivating the ability of DNA to bind TLR9, TcdA appears to chaperone and organize DNA into an inflammatory, spatially periodic structure.
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Affiliation(s)
- Xinhua Chen
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.
| | - Xiaotong Yang
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA,Institute of Microbiology and Immunology, College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Jaime de Anda
- Department of Bioengineering, Department of Chemistry and Biochemistry, California Nano Systems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jun Huang
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA,Department of Colorectal Surgery, the 6th Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Dan Li
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Hua Xu
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Kelsey S. Shields
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Mária Džunková
- DOE Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Joshua Hansen
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | | | - Eric U. Yee
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Douglas T. Golenbock
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Marianne A. Grant
- Division of Molecular and Vascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Gerard C. L. Wong
- Department of Bioengineering, Department of Chemistry and Biochemistry, California Nano Systems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA,Corresponding Authors: Xinhua Chen, PhD, , or Gerard C. L. Wong, PhD,
| | - Ciarán P. Kelly
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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9
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Ising C, Venegas C, Zhang S, Scheiblich H, Schmidt SV, Vieira‐Saecker A, Schwartz S, Albasset S, McManus RM, Tejera D, Griep A, Santarelli F, Brosseron F, Opitz S, Stunden J, Kayed R, Golenbock DT, Blum D, Latz E, Buee L, Heneka MT. Innate immune activation of the NLRP3 inflammasome pathway drives tau pathology. Alzheimers Dement 2020. [DOI: 10.1002/alz.039815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Christina Ising
- Clinic for Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Bonn Germany
- German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
| | - Carmen Venegas
- Clinic for Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Bonn Germany
| | - Shuangshuang Zhang
- Clinic for Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Bonn Germany
- German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
| | - Hannah Scheiblich
- Clinic for Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Bonn Germany
- German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
| | | | - Ana Vieira‐Saecker
- Clinic for Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Bonn Germany
- German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
| | - Stephanie Schwartz
- Clinic for Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Bonn Germany
- German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
| | - Shadi Albasset
- Clinic for Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Bonn Germany
| | - Roisin M. McManus
- Clinic for Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Bonn Germany
- German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
| | - Dario Tejera
- German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
| | - Angelika Griep
- German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
| | | | | | - Sabine Opitz
- Clinic for Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Bonn Germany
| | | | - Rakez Kayed
- University of Texas Medical Branch Galveston TX USA
| | - Douglas T. Golenbock
- Division of Infectious Diseases and Immunology University of Massachusetts Medical School Worcester MA USA
| | - David Blum
- University of Lille Inserm UMR‐ S1172 Lille France
| | - Eicke Latz
- German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
- Institute of Innate Immunity University Hospital Bonn Bonn Germany
| | - Luc Buee
- University of Lille Inserm UMR‐ S1172 Lille France
| | - Michael T. Heneka
- German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
- Department for Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Bonn Germany
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10
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Pereira LMN, Assis PA, de Araújo NM, Durso DF, Junqueira C, Ataíde MA, Pereira DB, Lien E, Fitzgerald KA, Zamboni DS, Golenbock DT, Gazzinelli RT. Caspase-8 mediates inflammation and disease in rodent malaria. Nat Commun 2020; 11:4596. [PMID: 32929083 PMCID: PMC7490701 DOI: 10.1038/s41467-020-18295-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 08/08/2020] [Indexed: 12/18/2022] Open
Abstract
Earlier studies indicate that either the canonical or non-canonical pathways of inflammasome activation have a limited role on malaria pathogenesis. Here, we report that caspase-8 is a central mediator of systemic inflammation, septic shock in the Plasmodium chabaudi-infected mice and the P. berghei-induced experimental cerebral malaria (ECM). Importantly, our results indicate that the combined deficiencies of caspases-8/1/11 or caspase-8/gasdermin-D (GSDM-D) renders mice impaired to produce both TNFα and IL-1β and highly resistant to lethality in these models, disclosing a complementary, but independent role of caspase-8 and caspases-1/11/GSDM-D in the pathogenesis of malaria. Further, we find that monocytes from malaria patients express active caspases-1, -4 and -8 suggesting that these inflammatory caspases may also play a role in the pathogenesis of human disease. Inflammasome activation plays a role in malaria pathogenesis, but details aren’t well understood. Here, the authors show that caspase-8 is a central mediator of systemic inflammation in rodent malaria and that monocytes from malaria patients express active caspases-1, -4 and -8.
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Affiliation(s)
- Larissa M N Pereira
- Instituto Rene Rachou, FIOCRUZ-MG, Belo Horizonte, MG, 30190-002, Brazil.,Departamento de Bioquímica e Imunologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.,Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Patrícia A Assis
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Natalia M de Araújo
- Instituto Rene Rachou, FIOCRUZ-MG, Belo Horizonte, MG, 30190-002, Brazil.,Departamento de Bioquímica e Imunologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Danielle F Durso
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Caroline Junqueira
- Instituto Rene Rachou, FIOCRUZ-MG, Belo Horizonte, MG, 30190-002, Brazil
| | - Marco Antônio Ataíde
- Instituto Rene Rachou, FIOCRUZ-MG, Belo Horizonte, MG, 30190-002, Brazil.,Departamento de Bioquímica e Imunologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Dhelio B Pereira
- Centro de Pesquisas em Medicina Tropical, FIOCRUZ-RO, Porto Velho, RO, 76812-329, Brazil
| | - Egil Lien
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Katherine A Fitzgerald
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Dario S Zamboni
- Departamento de Biologia Celular Molecular e Bioagentes Patogenicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, 14049-900, Brazil
| | - Douglas T Golenbock
- Instituto Rene Rachou, FIOCRUZ-MG, Belo Horizonte, MG, 30190-002, Brazil.,Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Ricardo T Gazzinelli
- Instituto Rene Rachou, FIOCRUZ-MG, Belo Horizonte, MG, 30190-002, Brazil. .,Departamento de Bioquímica e Imunologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil. .,Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA. .,Plataforma de Medicina Translacional, Fundação Oswaldo Cruz/Faculdade de Medicina de Ribeirão Preto, Ribeirão Preto, SP, 14049-900, Brazil.
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11
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Ising C, Venegas C, Zhang S, Scheiblich H, Schmidt SV, Vieira-Saecker A, Schwartz S, Albasset S, McManus RM, Tejera D, Griep A, Santarelli F, Brosseron F, Opitz S, Stunden J, Merten M, Kayed R, Golenbock DT, Blum D, Latz E, Buée L, Heneka MT. NLRP3 inflammasome activation drives tau pathology. Nature 2019; 575:669-673. [PMID: 31748742 DOI: 10.1038/s41586-019-1769-z] [Citation(s) in RCA: 690] [Impact Index Per Article: 138.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 10/02/2019] [Indexed: 12/21/2022]
Abstract
Alzheimer's disease is characterized by the accumulation of amyloid-beta in plaques, aggregation of hyperphosphorylated tau in neurofibrillary tangles and neuroinflammation, together resulting in neurodegeneration and cognitive decline1. The NLRP3 inflammasome assembles inside of microglia on activation, leading to increased cleavage and activity of caspase-1 and downstream interleukin-1β release2. Although the NLRP3 inflammasome has been shown to be essential for the development and progression of amyloid-beta pathology in mice3, the precise effect on tau pathology remains unknown. Here we show that loss of NLRP3 inflammasome function reduced tau hyperphosphorylation and aggregation by regulating tau kinases and phosphatases. Tau activated the NLRP3 inflammasome and intracerebral injection of fibrillar amyloid-beta-containing brain homogenates induced tau pathology in an NLRP3-dependent manner. These data identify an important role of microglia and NLRP3 inflammasome activation in the pathogenesis of tauopathies and support the amyloid-cascade hypothesis in Alzheimer's disease, demonstrating that neurofibrillary tangles develop downstream of amyloid-beta-induced microglial activation.
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Affiliation(s)
- Christina Ising
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany.,German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Carmen Venegas
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany
| | - Shuangshuang Zhang
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany.,German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Hannah Scheiblich
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany.,German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Susanne V Schmidt
- Institute of Innate Immunity, University Hospital Bonn, Bonn, Germany
| | - Ana Vieira-Saecker
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany.,German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Stephanie Schwartz
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany.,German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Shadi Albasset
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany.,German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Róisín M McManus
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany.,German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Dario Tejera
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Angelika Griep
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | | | | | - Sabine Opitz
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany.,German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | | | - Maximilian Merten
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany
| | - Rakez Kayed
- Mitchell Center for Neurodegenerative Diseases and Departments of Neurology, Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX, USA
| | - Douglas T Golenbock
- Divison of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
| | - David Blum
- University of Lille, Inserm, CHU-Lille, UMR-S 1172, "Alzheimer & Tauopathies", Labex DISTALZ, Lille, France
| | - Eicke Latz
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.,Institute of Innate Immunity, University Hospital Bonn, Bonn, Germany.,Divison of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Luc Buée
- University of Lille, Inserm, CHU-Lille, UMR-S 1172, "Alzheimer & Tauopathies", Labex DISTALZ, Lille, France
| | - Michael T Heneka
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital of Bonn, Bonn, Germany. .,German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany. .,Divison of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA.
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12
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Antonelli LR, Junqueira C, Vinetz JM, Golenbock DT, Ferreira MU, Gazzinelli RT. The immunology of Plasmodium vivax malaria. Immunol Rev 2019; 293:163-189. [PMID: 31642531 DOI: 10.1111/imr.12816] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 09/10/2019] [Indexed: 12/13/2022]
Abstract
Plasmodium vivax infection, the predominant cause of malaria in Asia and Latin America, affects ~14 million individuals annually, with considerable adverse effects on wellbeing and socioeconomic development. A clinical hallmark of Plasmodium infection, the paroxysm, is driven by pyrogenic cytokines produced during the immune response. Here, we review studies on the role of specific immune cell types, cognate innate immune receptors, and inflammatory cytokines on parasite control and disease symptoms. This review also summarizes studies on recurrent infections in individuals living in endemic regions as well as asymptomatic infections, a serious barrier to eliminating this disease. We propose potential mechanisms behind these repeated and subclinical infections, such as poor induction of immunological memory cells and inefficient T effector cells. We address the role of antibody-mediated resistance to P. vivax infection and discuss current progress in vaccine development. Finally, we review immunoregulatory mechanisms, such as inhibitory receptors, T regulatory cells, and the anti-inflammatory cytokine, IL-10, that antagonizes both innate and acquired immune responses, interfering with the development of protective immunity and parasite clearance. These studies provide new insights for the clinical management of symptomatic as well as asymptomatic individuals and the development of an efficacious vaccine for vivax malaria.
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Affiliation(s)
- Lis R Antonelli
- Instituto de Pesquisas Rene Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
| | - Caroline Junqueira
- Instituto de Pesquisas Rene Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
| | - Joseph M Vinetz
- Section of Infectious Diseases, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Douglas T Golenbock
- Division of Infectious Disease and immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Marcelo U Ferreira
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Ricardo T Gazzinelli
- Instituto de Pesquisas Rene Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil.,Division of Infectious Disease and immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA.,Plataforma de Medicina Translacional, Fundação Oswaldo Cruz, Ribeirão Preto, Brazil
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13
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Deng M, Guo H, Tam JW, Johnson BM, Brickey WJ, New JS, Lenox A, Shi H, Golenbock DT, Koller BH, McKinnon KP, Beutler B, Ting JPY. Platelet-activating factor (PAF) mediates NLRP3-NEK7 inflammasome induction independently of PAFR. J Exp Med 2019; 216:2838-2853. [PMID: 31558613 PMCID: PMC6888982 DOI: 10.1084/jem.20190111] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 07/09/2019] [Accepted: 09/04/2019] [Indexed: 12/22/2022] Open
Abstract
Platelet-activating factor (PAF) can drive pathophysiological inflammation, but the mechanism remains incompletely understood. Here, Deng et al. report that PAF activates the canonical NLRP3 inflammasome independently of its receptor PAFR. The role of lipids in inflammasome activation remains underappreciated. The phospholipid, platelet-activating factor (PAF), exerts multiple physiological functions by binding to a G protein–coupled seven-transmembrane receptor (PAFR). PAF is associated with a number of inflammatory disorders, yet the molecular mechanism underlying its proinflammatory function remains to be fully elucidated. We show that multiple PAF isoforms and PAF-like lipids can activate the inflammasome, resulting in IL-1β and IL-18 maturation. This is dependent on NLRP3, ASC, caspase-1, and NEK7, but not on NLRC4, NLRP1, NLRP6, AIM2, caspase-11, or GSDMD. Inflammasome activation by PAF also requires potassium efflux and calcium influx but not lysosomal cathepsin or mitochondrial reactive oxygen species. PAF exacerbates peritonitis partly through inflammasome activation, but PAFR is dispensable for PAF-induced inflammasome activation in vivo or in vitro. These findings reveal that PAF represents a damage-associated signal that activates the canonical inflammasome independently of PAFR and provides an explanation for the ineffectiveness of PAFR antagonist in blocking PAF-mediated inflammation in the clinic.
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Affiliation(s)
- Meng Deng
- Oral and Craniofacial Biomedicine PhD Program, University of North Carolina at Chapel Hill, Chapel Hill, NC.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Haitao Guo
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Jason W Tam
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Brandon M Johnson
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - W June Brickey
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - James S New
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL
| | - Austin Lenox
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL
| | - Hexin Shi
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX
| | - Douglas T Golenbock
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA
| | - Beverly H Koller
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Karen P McKinnon
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Bruce Beutler
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX
| | - Jenny P-Y Ting
- Oral and Craniofacial Biomedicine PhD Program, University of North Carolina at Chapel Hill, Chapel Hill, NC .,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC
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14
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Skjesol A, Yurchenko M, Bösl K, Gravastrand C, Nilsen KE, Grøvdal LM, Agliano F, Patane F, Lentini G, Kim H, Teti G, Kumar Sharma A, Kandasamy RK, Sporsheim B, Starheim KK, Golenbock DT, Stenmark H, McCaffrey M, Espevik T, Husebye H. The TLR4 adaptor TRAM controls the phagocytosis of Gram-negative bacteria by interacting with the Rab11-family interacting protein 2. PLoS Pathog 2019; 15:e1007684. [PMID: 30883606 PMCID: PMC6438586 DOI: 10.1371/journal.ppat.1007684] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 03/28/2019] [Accepted: 03/07/2019] [Indexed: 02/06/2023] Open
Abstract
Phagocytosis is a complex process that eliminates microbes and is performed by specialised cells such as macrophages. Toll-like receptor 4 (TLR4) is expressed on the surface of macrophages and recognizes Gram-negative bacteria. Moreover, TLR4 has been suggested to play a role in the phagocytosis of Gram-negative bacteria, but the mechanisms remain unclear. Here we have used primary human macrophages and engineered THP-1 monocytes to show that the TLR4 sorting adapter, TRAM, is instrumental for phagocytosis of Escherichia coli as well as Staphylococcus aureus. We find that TRAM forms a complex with Rab11 family interacting protein 2 (FIP2) that is recruited to the phagocytic cups of E. coli. This promotes activation of the actin-regulatory GTPases Rac1 and Cdc42. Our results show that FIP2 guided TRAM recruitment orchestrates actin remodelling and IRF3 activation, two events that are both required for phagocytosis of Gram-negative bacteria. The Gram-negative bacteria E. coli is the most common cause of severe human pathological conditions like sepsis. Sepsis is a clinical syndrome defined by pathological changes due to systemic inflammation, resulting in paralysis of adaptive T-cell immunity with IFN-β as a critical factor. TLR4 is a key sensing receptor of lipopolysaccharide on Gram-negative bacteria. Inflammatory signalling by TLR4 is initiated by the use of alternative pair of TIR-adapters, MAL-MyD88 or TRAM-TRIF. MAL-MyD88 signaling occurs mainly from the plasma membrane giving pro-inflammatory cytokines like TNF, while TRAM-TRIF signaling occurs from vacuoles like endosomes and phagosomes to give type I interferons like IFN-β. It has previously been shown that TLR4 can control phagocytosis and phagosomal maturation through MAL-MyD88 in mice, however, these data have been disputed and published before the role of TRAM was defined in the induction of IFN-β. A role for TRAM or TRIF in phagocytosis has not previously been reported. Here we describe a novel mechanism where TRAM and its binding partner Rab11-FIP2 control phagocytosis of E. coli and regulate IRF3 dependent production of IFN-β. The significance of these results is that we define Rab11-FIP2 as a potential target for modulation of TLR4-dependent signalling in different pathological states.
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Affiliation(s)
- Astrid Skjesol
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Mariia Yurchenko
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Korbinian Bösl
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Caroline Gravastrand
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Kaja Elisabeth Nilsen
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Lene Melsæther Grøvdal
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Federica Agliano
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - Francesco Patane
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - Germana Lentini
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - Hera Kim
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Giuseppe Teti
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - Aditya Kumar Sharma
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Richard K. Kandasamy
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Bjørnar Sporsheim
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Kristian K. Starheim
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Douglas T. Golenbock
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, United States of America
| | - Harald Stenmark
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Oslo, Norway
- Department for Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Oslo Norway
| | - Mary McCaffrey
- Molecular Cell Biology Laboratory, Biochemistry Department, Biosciences Institute, University College Cork, Cork, Ireland
| | - Terje Espevik
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- The Central Norway Regional Health Authority, St. Olavs Hospital HF, Trondheim, Norway
| | - Harald Husebye
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- The Central Norway Regional Health Authority, St. Olavs Hospital HF, Trondheim, Norway
- * E-mail:
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15
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Schrum JE, Crabtree JN, Dobbs KR, Kiritsy MC, Reed GW, Gazzinelli RT, Netea MG, Kazura JW, Dent AE, Fitzgerald KA, Golenbock DT. Cutting Edge: Plasmodium falciparum Induces Trained Innate Immunity. J Immunol 2018; 200:1243-1248. [PMID: 29330325 DOI: 10.4049/jimmunol.1701010] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 12/04/2017] [Indexed: 11/19/2022]
Abstract
Malarial infection in naive individuals induces a robust innate immune response. In the recently described model of innate immune memory, an initial stimulus primes the innate immune system to either hyperrespond (termed training) or hyporespond (tolerance) to subsequent immune challenge. Previous work in both mice and humans demonstrated that infection with malaria can both serve as a priming stimulus and promote tolerance to subsequent infection. In this study, we demonstrate that initial stimulation with Plasmodium falciparum-infected RBCs or the malaria crystal hemozoin induced human adherent PBMCs to hyperrespond to subsequent ligation of TLR2. This hyperresponsiveness correlated with increased H3K4me3 at important immunometabolic promoters, and these epigenetic modifications were also seen in Kenyan children naturally infected with malaria. However, the use of epigenetic and metabolic inhibitors indicated that the induction of trained immunity by malaria and its ligands may occur via a previously unrecognized mechanism(s).
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Affiliation(s)
- Jacob E Schrum
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Juliet N Crabtree
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Katherine R Dobbs
- Department of Pediatrics, Rainbow Babies and Children's Hospital, Cleveland, OH 44106
| | - Michael C Kiritsy
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - George W Reed
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605.,Corrona, LLC, Southborough, MA 01772
| | - Ricardo T Gazzinelli
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605.,Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 41270-901, Brazil.,Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais 30190-002, Brazil
| | - Mihai G Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands; and
| | - James W Kazura
- Center for Global Health and Disease, Case Western Reserve University, Cleveland, OH 44106
| | - Arlene E Dent
- Department of Pediatrics, Rainbow Babies and Children's Hospital, Cleveland, OH 44106.,Center for Global Health and Disease, Case Western Reserve University, Cleveland, OH 44106
| | | | - Douglas T Golenbock
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605;
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16
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Gallego-Marin C, Schrum JE, Andrade WA, Shaffer SA, Giraldo LF, Lasso AM, Kurt-Jones EA, Fitzgerald KA, Golenbock DT. Cyclic GMP-AMP Synthase Is the Cytosolic Sensor of Plasmodium falciparum Genomic DNA and Activates Type I IFN in Malaria. J Immunol 2017; 200:768-774. [PMID: 29212905 DOI: 10.4049/jimmunol.1701048] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 11/06/2017] [Indexed: 01/04/2023]
Abstract
Innate immune receptors have a key role in the sensing of malaria and initiating immune responses. As a consequence of infection, systemic inflammation emerges and is directly related to signs and symptoms during acute disease. We have previously reported that plasmodial DNA is the primary driver of systemic inflammation in malaria, both within the phagolysosome and in the cytosol of effector cells. In this article, we demonstrate that Plasmodium falciparum genomic DNA delivered to the cytosol of human monocytes binds and activates cyclic GMP-AMP synthase (cGAS). Activated cGAS synthesizes 2'3'-cGAMP, which we subsequently can detect using liquid chromatography-tandem mass spectrometry. 2'3'-cGAMP acts as a second messenger for STING activation and triggers TBK1/IRF3 activation, resulting in type I IFN production in human cells. This induction of type I IFN was independent of IFI16. Access of DNA to the cytosolic compartment is mediated by hemozoin, because incubation of purified malaria pigment with DNase abrogated IFN-β induction. Collectively, these observations implicate cGAS as an important cytosolic sensor of P. falciparum genomic DNA and reveal the role of the cGAS/STING pathway in the induction of type I IFN in response to malaria parasites.
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Affiliation(s)
- Carolina Gallego-Marin
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605.,Centro Internacional de Entrenamiento e Investigaciones Medicas, Cali 760001, Colombia
| | - Jacob E Schrum
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Warrison A Andrade
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Scott A Shaffer
- Proteomics and Mass Spectrometry Facility, University of Massachusetts Medical School, Shrewsbury, MA 01545; and.,Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605
| | - Lina F Giraldo
- Centro Internacional de Entrenamiento e Investigaciones Medicas, Cali 760001, Colombia
| | - Alvaro M Lasso
- Centro Internacional de Entrenamiento e Investigaciones Medicas, Cali 760001, Colombia
| | - Evelyn A Kurt-Jones
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Katherine A Fitzgerald
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Douglas T Golenbock
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605;
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17
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Scheiblich H, Schlütter A, Golenbock DT, Latz E, Martinez-Martinez P, Heneka MT. Activation of the NLRP3 inflammasome in microglia: the role of ceramide. J Neurochem 2017; 143:534-550. [DOI: 10.1111/jnc.14225] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 08/29/2017] [Accepted: 08/30/2017] [Indexed: 02/04/2023]
Affiliation(s)
- Hannah Scheiblich
- Department of Neurodegenerative Disease and Gerontopsychiatry/Neurology; University of Bonn - Medical Center; Bonn Germany
| | - Anna Schlütter
- Department of Neurodegenerative Disease and Gerontopsychiatry/Neurology; University of Bonn - Medical Center; Bonn Germany
- Department of Neuroscience; Maastricht University; Maastricht The Netherlands
| | - Douglas T. Golenbock
- Department of Infectious Diseases and Immunology; University of Massachusetts Medical School; Worcester Massachusetts USA
| | - Eicke Latz
- Department of Infectious Diseases and Immunology; University of Massachusetts Medical School; Worcester Massachusetts USA
- Institute of Innate Immunity; University of Bonn; Bonn Germany
- German Center for Neurodegenerative Diseases (DZNE); Bonn Germany
| | - Pilar Martinez-Martinez
- Department of Infectious Diseases and Immunology; University of Massachusetts Medical School; Worcester Massachusetts USA
| | - Michael T. Heneka
- Department of Neurodegenerative Disease and Gerontopsychiatry/Neurology; University of Bonn - Medical Center; Bonn Germany
- Department of Infectious Diseases and Immunology; University of Massachusetts Medical School; Worcester Massachusetts USA
- German Center for Neurodegenerative Diseases (DZNE); Bonn Germany
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18
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Andrade WA, Firon A, Schmidt T, Hornung V, Fitzgerald KA, Kurt-Jones EA, Trieu-Cuot P, Golenbock DT, Kaminski PA. Group B Streptococcus Degrades Cyclic-di-AMP to Modulate STING-Dependent Type I Interferon Production. Cell Host Microbe 2017; 20:49-59. [PMID: 27414497 DOI: 10.1016/j.chom.2016.06.003] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 04/29/2016] [Accepted: 06/06/2016] [Indexed: 11/16/2022]
Abstract
Induction of type I interferon (IFN) in response to microbial pathogens depends on a conserved cGAS-STING signaling pathway. The presence of DNA in the cytoplasm activates cGAS, while STING is activated by cyclic dinucleotides (cdNs) produced by cGAS or from bacterial origins. Here, we show that Group B Streptococcus (GBS) induces IFN-β production almost exclusively through cGAS-STING-dependent recognition of bacterial DNA. However, we find that GBS expresses an ectonucleotidase, CdnP, which hydrolyzes extracellular bacterial cyclic-di-AMP. Inactivation of CdnP leads to c-di-AMP accumulation outside the bacteria and increased IFN-β production. Higher IFN-β levels in vivo increase GBS killing by the host. The IFN-β overproduction observed in the absence of CdnP is due to the cumulative effect of DNA sensing by cGAS and STING-dependent sensing of c-di-AMP. These findings describe the importance of a bacterial c-di-AMP ectonucleotidase and suggest a direct bacterial mechanism that dampens activation of the cGAS-STING axis.
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Affiliation(s)
- Warrison A Andrade
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA; Program in Innate Immunity, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Arnaud Firon
- Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, 75724 Paris, France; Centre National de la Recherche Scientifique (CNRS) ERL 3526, 75724 Paris, France
| | - Tobias Schmidt
- Institute of Molecular Medicine, Universitätsklinikum Bonn, Bonn 53127, Germany
| | - Veit Hornung
- Institute of Molecular Medicine, Universitätsklinikum Bonn, Bonn 53127, Germany
| | - Katherine A Fitzgerald
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA; Program in Innate Immunity, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Evelyn A Kurt-Jones
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA; Program in Innate Immunity, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Patrick Trieu-Cuot
- Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, 75724 Paris, France; Centre National de la Recherche Scientifique (CNRS) ERL 3526, 75724 Paris, France.
| | - Douglas T Golenbock
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA; Program in Innate Immunity, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA.
| | - Pierre-Alexandre Kaminski
- Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, 75724 Paris, France; Centre National de la Recherche Scientifique (CNRS) ERL 3526, 75724 Paris, France
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19
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Kalantari P, Harandi OF, Agarwal S, Rus F, Kurt-Jones EA, Fitzgerald KA, Caffrey DR, Golenbock DT. miR-718 represses proinflammatory cytokine production through targeting phosphatase and tensin homolog (PTEN). J Biol Chem 2017; 292:5634-5644. [PMID: 28209713 DOI: 10.1074/jbc.m116.749325] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 02/10/2017] [Indexed: 01/04/2023] Open
Abstract
Bacterial sepsis involves a complex interaction between the host immune response and bacterial LPS. LPS binds Toll-like receptor (TLR) 4, which leads to the release of proinflammatory cytokines that are essential for a potent innate immune response against pathogens. The innate immune system is tightly regulated, as excessive inflammation can lead to organ failure and death. MicroRNAs have recently emerged as important regulators of the innate immune system. Here we determined the function of miR-718, which is conserved across mammals and overlaps with the 5' UTR of the interleukin 1 receptor-associated kinase (IRAK1) gene. As IRAK1 is a key component of innate immune signaling pathways that are downstream of most TLRs, we hypothesized that miR-718 helps regulate the innate immune response. Activation of TLR4, but not TLR3, induced the expression of miR-718 in macrophages. miR-718 expression was also induced in the spleens of mice upon LPS injection. miR-718 modulates PI3K/Akt signaling by directly down-regulating phosphatase and tensin homolog (PTEN), thereby promoting phosphorylation of Akt, which leads to a decrease in proinflammatory cytokine production. Phosphorylated Akt induces let-7e expression, which, in turn, down-regulates TLR4 and further diminishes TLR4-mediated proinflammatory signals. Decreased miR-718 expression is associated with bacterial burden during Neisseria gonorrhoeae infection and alters the infection dynamics of N. gonorrhoeae in vitro Furthermore, miR-718 regulates the induction of LPS tolerance in macrophages. We propose a role for miR-718 in controlling TLR4 signaling and inflammatory cytokine signaling through a negative feedback regulation loop involving down-regulation of TLR4, IRAK1, and NF-κB.
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Affiliation(s)
- Parisa Kalantari
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Omid F Harandi
- the Department of Medicine, Division of Hematology/Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215
| | - Sarika Agarwal
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Florentina Rus
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Evelyn A Kurt-Jones
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Katherine A Fitzgerald
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Daniel R Caffrey
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Douglas T Golenbock
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
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20
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Abstract
Non-methylated CpG-motifs in bacterial or viral DNA are recognized by TLR9 as foreign. The activation of TLR9 by microbial DNA or synthetic oligonucleotides based on these motifs leads to the induction of innate immune responses. We have compared the subcellular localization of fluorescent versions of TLR9 and TLR4 and found that TLR9 is expressed in the endoplasmic reticulum while TLR4 is expressed on the plasma membrane. Fluorescently tagged bacterial DNA or CpG-DNA was observed to traffic to a tubular lysosomal compartment in human pDCs. In stimulated cells, TLR9 translocated to CpG-DNA or microbial DNA containing structures in the endosome, where TLR9 binds to DNA and initiates signaling.
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Affiliation(s)
- Eicke Latz
- Division of Infectious Diseases, University of Massachusetts Medical School, Worcester, Massachusetts, USA,
| | - Alberto Visintin
- Division of Infectious Diseases, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Terje Espevik
- Norwegian University of Science and Technology, Trondheim, Norway
| | - Douglas T. Golenbock
- Division of Infectious Diseases, University of Massachusetts Medical School, Worcester, Massachusetts, USA
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21
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Abstract
Members of the Toll-like receptor (TLR) family have been shown to be important in the activation of cells by a variety of microbial ligands. TLRs are thought to mediate the `recognition event' that follows an encounter between a mammalian cell and a microbial agent. In the case of the response to bacterial lipopolysaccharide (LPS), it is clear that the ability of these cell surface proteins to initiate the events necessary for activation of cells to produce cytokines is dependent upon `accessory proteins' such as the pattern recognition protein CD14 and the lipopolysaccharide binding protein (LBP). While the role of these proteins in the LPS-specific response is defined, their role in other TLR responses has not been defined, but it is important in understanding these events and, potentially, in designing new therapeutic strategies. Here we report on the role of these proteins in the response to yeast zymosan. The requirements for this response (which unlike the response to LPS is a response to a particulate antigen) and the role of other serum proteins are defined.
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Affiliation(s)
- Robert W. Finberg
- Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA,
| | - Fabio Re
- Department of Adult Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Lana Popova
- Department of Adult Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Douglas T. Golenbock
- Maxwell Finland Laboratory for Infectious Diseases, Boston University School of Medicine, Boston Medical Center, Boston, Massachusetts, USA
| | - Evelyn A. Kurt-Jones
- Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA
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22
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Abstract
Streptococcus pneumoniae and Streptococcus agalactiae cause distinct infectious diseases in small children. Similarly, these bacteria elicit very different host-cell responses in vitro. Inactivated S. agalactiae by far exceeds S. pneumoniae in the activation of inflammatory cytokines and upstream signaling intermediates such as the MAP kinase JNK. The inflammatory response to both Streptococcus spp. is mediated by MyD88, an essential adapter protein of Toll-like receptors (TLRs), although the specific TLRs that are involved have not been fully resolved. Furthermore, during logarithmic growth, S. pneumoniae releases pneumolysin that interacts with TLR4 whereas S. agalactiae releases diacylated molecules that interact with TLR2/6. Interaction of these soluble bacterial products with their cognate TLRs is critical for limiting bacterial dissemination and and systemic inflammation in mice. This might be due, in part, to TLR-mediated apoptosis induced by these factors. In conclusion related streptococcal species induce specific events in TLR-mediated signal transduction. Comparative analysis of the host-cell response to these bacteria reveals molecules such as JNK as valuable targets for adjunctive sepsis therapy.
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Affiliation(s)
| | - Douglas T. Golenbock
- Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Philipp Henneke
- Division of Infectious Diseases, Children's Hospital, Freiburg, Germany, philipp.henneke@ uniklinik-freiburg.de
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23
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Vogel SN, Bhat N, Carboni JM, Mayadas TN, Blanco J, Perera PY, Golenbock DT. Identification of CD18 as a novel Taxol binding/signaling protein in murine macrophage membranes. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/09680519990050030101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The anti-tumor agent, Taxol, is a potent LPS mimetic in murine macrophages, an activity that is dissociable from its well-characterized anti-mitotic activity which is mediated by microtubule hyperstabilization. A photoactivatable Taxol analog was used to identify components of a putative, shared LPS signaling apparatus in murine macrophage membranes. We report here that CD18, the β chain of the β2-integrin, Mac-1, represents a major Taxol binding protein in murine macrophages.
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Affiliation(s)
- Stefanie N. Vogel
- Department of Microbiology and Immunology, USUHS, Bethesda, Maryland, USA
| | - Nayantara Bhat
- Department of Microbiology and Immunology, USUHS, Bethesda, Maryland, USA
| | - Joan M. Carboni
- Oncology Drug Discovery, Bristol-Myers Squibb, Princeton, New Jersey, USA
| | - Tanya N. Mayadas
- Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Jorge Blanco
- Department of Microbiology and Immunology, USUHS, Bethesda, Maryland, USA
| | - Pin-Yu Perera
- Department of Microbiology and Immunology, USUHS, Bethesda, Maryland, USA
| | - Douglas T. Golenbock
- The Maxwell Finland Laboratory for Infectious Diseases, Boston Univ. School of Medicine, Boston, Massachusetts, USA
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24
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Ingalls RR, Lien E, Golenbock DT. Differential roles of TLR2 and TLR4 in the host response to Gram-negative bacteria: lessons from a lipopolysaccharide-deficient mutant of Neisseria meningitidis. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/09680519000060050301] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The inflammatory response to bacterial infections plays an important role in the detection and elimination of invading micro-organisms. Various components of the bacterial cell wall are capable of activating this pro-inflammatory response. In the case of Gram-negative bacteria, lipopolysaccharide (LPS) is the dominant trigger, although other bacterial factors are also capable of activating this systemic inflammatory response. Recently, Toll-like receptors (TLRs) have been implicated in host responses to bacterial pathogens. Specifically, TLR4 mediates LPS responses while TLR2 plays a broader role in the recognition of a variety of bacteria and bacterial antigens. The experiments in this study were designed to examine the role of Gram-negative cell wall components, other than LPS, and their cellular receptors in the host response to infection using an LPS-deficient mutant of Neisseria meningitidis. Although less potent than the parental strain, we found the LPS-deficient mutant to be a capable inducer of the inflammatory response in a variety of cell types. Moreover, cellular activation by this mutant required expression of CD14 and TLR2.
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Affiliation(s)
- Robin R. Ingalls
- Boston Medical Center and Boston University School of Medicine, Boston, Massachusetts, USA,
| | - Egil Lien
- Boston Medical Center and Boston University School of Medicine, Boston, Massachusetts, USA
| | - Douglas T. Golenbock
- Boston Medical Center and Boston University School of Medicine, Boston, Massachusetts, USA
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25
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Tzeng TC, Schattgen S, Monks B, Wang D, Cerny A, Latz E, Fitzgerald K, Golenbock DT. A Fluorescent Reporter Mouse for Inflammasome Assembly Demonstrates an Important Role for Cell-Bound and Free ASC Specks during In Vivo Infection. Cell Rep 2016; 16:571-582. [PMID: 27346360 DOI: 10.1016/j.celrep.2016.06.011] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 04/05/2015] [Accepted: 05/26/2016] [Indexed: 11/24/2022] Open
Abstract
Inflammasome activation is associated with numerous diseases. However, in vivo detection of the activated inflammasome complex has been limited by a dearth of tools. We have developed transgenic mice that ectopically express the fluorescent adaptor protein, apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC) and characterized the formation of assembled inflammasome complexes ("specks") in primary cells and tissues. In addition to hematopoietic cells, we have found that a stromal population in the lung tissues formed specks during the early phase of influenza infection, whereas myeloid cells showed speck formation after 2 days. In a peritonitis and group B streptococcus infection model, a higher percentage of neutrophils formed specks at early phases of infection, while dendritic cells formed specks at later time points. Furthermore, speck-forming cells underwent pyroptosis and extensive release of specks to the extracellular milieu in vivo. These data underscore the importance of free specks during inflammatory processes in vivo.
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Affiliation(s)
- Te-Chen Tzeng
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Stefan Schattgen
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Brian Monks
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA; Institute of Innate Immunity, University of Bonn, Sigmund-Freud-Strasse 25, 53127 Bonn, Germany
| | - Donghai Wang
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Anna Cerny
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Eicke Latz
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA; Institute of Innate Immunity, University of Bonn, Sigmund-Freud-Strasse 25, 53127 Bonn, Germany
| | - Katherine Fitzgerald
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Douglas T Golenbock
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
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26
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Akula MK, Shi M, Jiang Z, Foster CE, Miao D, Li AS, Zhang X, Gavin RM, Forde SD, Germain G, Carpenter S, Rosadini CV, Gritsman K, Chae JJ, Hampton R, Silverman N, Gravallese EM, Kagan JC, Fitzgerald KA, Kastner DL, Golenbock DT, Bergo MO, Wang D. Control of the innate immune response by the mevalonate pathway. Nat Immunol 2016; 17:922-9. [PMID: 27270400 PMCID: PMC4955724 DOI: 10.1038/ni.3487] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 05/05/2016] [Indexed: 02/08/2023]
Abstract
Deficiency of mevalonate kinase (MVK) causes systemic inflammation. However, the molecular mechanisms linking the mevalonate pathway to inflammation remain obscure. Geranylgeranyl pyrophosphate (GGPP), a non-sterol intermediate of the mevalonate pathway, is the substrate for protein geranylgeranylation, protein post-translational modification catalyzed by protein geranylgeranyl transferase I (GGTase I). Pyrin is an innate immune sensor that forms an active inflammasome in response to bacterial toxins. Mutations in MEFV (encoding human PYRIN) cause autoinflammatory Familial Mediterranean Fever (FMF) syndrome. Here, we show that protein geranylgeranylation enables Toll-like receptor (TLR)-induced phosphatidylinositol-3-OH kinase PI(3)K) activation by promoting the interaction between the small GTPase Kras and the PI(3)K catalytic subunit p110δ. Macrophages deficient for GGTase I or p110δ exhibited constitutive interleukin-1β release that was MEFV-dependent, but NLRP3-, AIM2- and NLRC4- inflammasome independent. In the absence of protein geranylgeranylation, compromised PI(3)K activity allows for an unchecked TLR-induced inflammatory responses and constitutive activation of the Pyrin inflammasome.
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Affiliation(s)
- Murali K Akula
- Division of Rheumatology and Immunology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA.,Department of Immunology, Duke University School of Medicine, Durham, North Carolina, USA.,Sahlgrenska Cancer Center, Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Man Shi
- Division of Rheumatology and Immunology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA.,Department of Immunology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Zhaozhao Jiang
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Celia E Foster
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - David Miao
- Division of Rheumatology and Immunology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA.,Department of Immunology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Annie S Li
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Xiaoman Zhang
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Ruth M Gavin
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Sorcha D Forde
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Gail Germain
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Susan Carpenter
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Charles V Rosadini
- Division of Gastroenterology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Kira Gritsman
- Department of Medicine, Albert Einstein College of Medicine, New York City, New York, USA.,Department of Cell Biology, Albert Einstein College of Medicine, New York City, New York, USA
| | - Jae Jin Chae
- Inflammatory Disease Section, Metabolic, Cardiovascular and Inflammatory Disease Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Randolph Hampton
- Division of Biology, University of California San Diego, La Jolla, California, USA
| | - Neal Silverman
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Ellen M Gravallese
- Division of Rheumatology, Department of Medicine, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Jonathan C Kagan
- Division of Gastroenterology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Katherine A Fitzgerald
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Daniel L Kastner
- Inflammatory Disease Section, Metabolic, Cardiovascular and Inflammatory Disease Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Douglas T Golenbock
- Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Martin O Bergo
- Sahlgrenska Cancer Center, Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Donghai Wang
- Division of Rheumatology and Immunology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA.,Department of Immunology, Duke University School of Medicine, Durham, North Carolina, USA.,Division of Infectious Diseases and Immunology, the University of Massachusetts Medical School, Worcester, Massachusetts, USA
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27
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Andrade WA, Agarwal S, Mo S, Shaffer SA, Dillard JP, Schmidt T, Hornung V, Fitzgerald KA, Kurt-Jones EA, Golenbock DT. Type I Interferon Induction by Neisseria gonorrhoeae: Dual Requirement of Cyclic GMP-AMP Synthase and Toll-like Receptor 4. Cell Rep 2016; 15:2438-48. [PMID: 27264171 DOI: 10.1016/j.celrep.2016.05.030] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 03/28/2016] [Accepted: 05/05/2016] [Indexed: 12/29/2022] Open
Abstract
The innate immune system is the first line of defense against Neisseria gonorrhoeae (GC). Exposure of cells to GC lipooligosaccharides induces a strong immune response, leading to type I interferon (IFN) production via TLR4/MD-2. In addition to living freely in the extracellular space, GC can invade the cytoplasm to evade detection and elimination. Double-stranded DNA introduced into the cytosol binds and activates the enzyme cyclic-GMP-AMP synthase (cGAS), which produces 2'3'-cGAMP and triggers STING/TBK-1/IRF3 activation, resulting in type I IFN expression. Here, we reveal a cytosolic response to GC DNA that also contributes to type I IFN induction. We demonstrate that complete IFN-β induction by live GC depends on both cGAS and TLR4. Type I IFN is detrimental to the host, and dysregulation of iron homeostasis genes may explain lower bacteria survival in cGAS(-/-) and TLR4(-/-) cells. Collectively, these observations reveal cooperation between TLRs and cGAS in immunity to GC infection.
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Affiliation(s)
- Warrison A Andrade
- Division of Infectious Diseases, University of Massachusetts Medical School, Worcester, MA 01605, USA; Program in Innate Immunity, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Sarika Agarwal
- Division of Infectious Diseases, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Shunyan Mo
- Proteomics and Mass Spectrometry Facility, University of Massachusetts Medical School, Worcester, MA 01605, USA; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Scott A Shaffer
- Proteomics and Mass Spectrometry Facility, University of Massachusetts Medical School, Worcester, MA 01605, USA; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Joseph P Dillard
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Tobias Schmidt
- Institute of Molecular Medicine, Universitätsklinikum Bonn, Bonn 53127, Germany
| | - Veit Hornung
- Institute of Molecular Medicine, Universitätsklinikum Bonn, Bonn 53127, Germany
| | - Katherine A Fitzgerald
- Division of Infectious Diseases, University of Massachusetts Medical School, Worcester, MA 01605, USA; Program in Innate Immunity, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA; Centre of Molecular Inflammation Research and Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, 7489 Trondheim, Norway
| | - Evelyn A Kurt-Jones
- Division of Infectious Diseases, University of Massachusetts Medical School, Worcester, MA 01605, USA; Program in Innate Immunity, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Douglas T Golenbock
- Division of Infectious Diseases, University of Massachusetts Medical School, Worcester, MA 01605, USA; Program in Innate Immunity, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA; Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG 30190-002, Brazil.
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Shaughnessy J, Gulati S, Agarwal S, Unemo M, Ohnishi M, Su XH, Monks BG, Visintin A, Madico G, Lewis LA, Golenbock DT, Reed GW, Rice PA, Ram S. A Novel Factor H-Fc Chimeric Immunotherapeutic Molecule against Neisseria gonorrhoeae. J Immunol 2016; 196:1732-40. [PMID: 26773149 DOI: 10.4049/jimmunol.1500292] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 12/07/2015] [Indexed: 01/10/2023]
Abstract
Neisseria gonorrhoeae, the causative agent of the sexually transmitted infection gonorrhea, has developed resistance to almost every conventional antibiotic. There is an urgent need to develop novel therapies against gonorrhea. Many pathogens, including N. gonorrhoeae, bind the complement inhibitor factor H (FH) to evade complement-dependent killing. Sialylation of gonococcal lipooligosaccharide, as occurs in vivo, augments binding of human FH through its domains 18-20 (FH18-20). We explored the use of fusing FH18-20 with IgG Fc (FH18-20/Fc) to create a novel anti-infective immunotherapeutic. FH18-20 also binds to select host glycosaminoglycans to limit unwanted complement activation on host cells. To identify mutation(s) in FH18-20 that eliminated complement activation on host cells, yet maintained binding to N. gonorrhoeae, we created four mutations in domains 19 or 20 described in atypical hemolytic uremic syndrome that prevented binding of mutated fH to human erythrocytes. One of the mutant proteins (D to G at position 1119 in domain 19; FHD1119G/Fc) facilitated complement-dependent killing of gonococci similar to unmodified FH18-20/Fc but, unlike FH18-20/Fc, did not lyse human erythrocytes. FHD1119G/Fc bound to all (100%) of 15 sialylated clinical N. gonorrhoeae isolates tested (including three contemporary ceftriaxone-resistant strains), mediated complement-dependent killing of 10 of 15 (67%) strains, and enhanced C3 deposition (≥10-fold above baseline levels) on each of the five isolates not directly killed by complement. FHD1119G/Fc facilitated opsonophagocytic killing of a serum-resistant strain by human polymorphonuclear neutrophils. FHD1119G/Fc administered intravaginally significantly reduced the duration and burden of gonococcal infection in the mouse vaginal colonization model. FHD1119G/Fc represents a novel immunotherapeutic against multidrug-resistant N. gonorrhoeae.
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Affiliation(s)
- Jutamas Shaughnessy
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester MA 01605
| | - Sunita Gulati
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester MA 01605
| | - Sarika Agarwal
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester MA 01605
| | - Magnus Unemo
- World Health Organization Collaborating Centre for Gonorrhoea and Other Sexually Transmitted Infections, Department of Laboratory Medicine and Microbiology, Orebro University Hospital, SE-701 85 Orebro, Sweden
| | - Makoto Ohnishi
- National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Xia-Hong Su
- Institute of Dermatology, Chinese Academy of Medical Sciences, Peking Union Medical College, Nanjing 210042, China
| | - Brian G Monks
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester MA 01605; Institute of Innate Immunity, University Hospital, University of Bonn, 53127 Bonn, Germany
| | - Alberto Visintin
- Centers for Therapeutic Innovation, Pfizer, Inc., Cambridge, MA 02139
| | - Guillermo Madico
- Section of Infectious Diseases, Boston Medical Center, Boston, MA 02118; and
| | - Lisa A Lewis
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester MA 01605
| | - Douglas T Golenbock
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester MA 01605
| | - George W Reed
- Preventive and Behavioral Medicine, University of Massachusetts Medical School, Worcester MA 01605
| | - Peter A Rice
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester MA 01605
| | - Sanjay Ram
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester MA 01605;
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29
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Tamehiro N, Park MH, Hawxhurst V, Nagpal K, Adams ME, Zannis VI, Golenbock DT, Fitzgerald ML. LXR Agonism Upregulates the Macrophage ABCA1/Syntrophin Protein Complex That Can Bind ApoA-I and Stabilized ABCA1 Protein, but Complex Loss Does Not Inhibit Lipid Efflux. Biochemistry 2015; 54:6931-41. [PMID: 26506427 DOI: 10.1021/acs.biochem.5b00894] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Macrophage ABCA1 effluxes lipid and has anti-inflammatory activity. The syntrophins, which are cytoplasmic PDZ protein scaffolding factors, can bind ABCA1 and modulate its activity. However, many of the data assessing the function of the ABCA1-syntrophin interaction are based on overexpression in nonmacrophage cells. To assess endogenous complex function in macrophages, we derived immortalized macrophages from Abca1(+/+) and Abca1(-/-) mice and show their phenotype recapitulates primary macrophages. Abca1(+/+) lines express the CD11B and F4/80 macrophage markers and markedly upregulate cholesterol efflux in response to LXR nuclear hormone agonists. In contrast, immortalized Abca1(-/-) macrophages show no efflux to apoA-I. In response to LPS, Abca1(-/-) macrophages display pro-inflammatory changes, including an increased level of expression of cell surface CD14, and 11-26-fold higher levels of IL-6 and IL-12 mRNA. Given recapitulation of phenotype, we show with these lines that the ABCA1-syntrophin protein complex is upregulated by LXR agonists and can bind apoA-I. Moreover, in immortalized macrophages, combined α1/β2-syntrophin loss modulated ABCA1 cell surface levels and induced pro-inflammatory gene expression. However, loss of all three syntrophin isoforms known to bind ABCA1 did not impair lipid efflux in immortalized or primary macrophages. Thus, the ABCA1-syntrophin protein complex is not essential for ABCA1 macrophage lipid efflux but does directly interact with apoA-I and can modulate the pool of cell surface ABCA1 stabilized by apoA-I.
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Affiliation(s)
- Norimasa Tamehiro
- Lipid Metabolism Unit, Massachusetts General Hospital (MGH), Center for Computational & Integrative Biology (CCIB), Richard B. Simches Research Center , 185 Cambridge Street, 7th Floor #7150, Boston, Massachusetts 02114, United States
| | - Min Hi Park
- Lipid Metabolism Unit, Massachusetts General Hospital (MGH), Center for Computational & Integrative Biology (CCIB), Richard B. Simches Research Center , 185 Cambridge Street, 7th Floor #7150, Boston, Massachusetts 02114, United States
| | - Victoria Hawxhurst
- Lipid Metabolism Unit, Massachusetts General Hospital (MGH), Center for Computational & Integrative Biology (CCIB), Richard B. Simches Research Center , 185 Cambridge Street, 7th Floor #7150, Boston, Massachusetts 02114, United States
| | - Kamalpreet Nagpal
- Department of Medicine, Division of Infectious Diseases and Immunology, University of Massachusetts Medical School , Worcester, Massachusetts 01605, United States
| | - Marv E Adams
- University of Washington , 1705 Northeast Pacific Street, H-418 HSB Campus Box 357290, Seattle, Washington 98195, United States
| | - Vassilis I Zannis
- Whitaker Cardiovascular Institute, Boston University School of Medicine , 700 Albany Street, W509, Boston, Massachusetts 02118, United States
| | - Douglas T Golenbock
- Department of Medicine, Division of Infectious Diseases and Immunology, University of Massachusetts Medical School , Worcester, Massachusetts 01605, United States
| | - Michael L Fitzgerald
- Lipid Metabolism Unit, Massachusetts General Hospital (MGH), Center for Computational & Integrative Biology (CCIB), Richard B. Simches Research Center , 185 Cambridge Street, 7th Floor #7150, Boston, Massachusetts 02114, United States
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30
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Heneka MT, Carson MJ, El Khoury J, Landreth GE, Brosseron F, Feinstein DL, Jacobs AH, Wyss-Coray T, Vitorica J, Ransohoff RM, Herrup K, Frautschy SA, Finsen B, Brown GC, Verkhratsky A, Yamanaka K, Koistinaho J, Latz E, Halle A, Petzold GC, Town T, Morgan D, Shinohara ML, Perry VH, Holmes C, Bazan NG, Brooks DJ, Hunot S, Joseph B, Deigendesch N, Garaschuk O, Boddeke E, Dinarello CA, Breitner JC, Cole GM, Golenbock DT, Kummer MP. Neuroinflammation in Alzheimer's disease. Lancet Neurol 2015; 14:388-405. [PMID: 25792098 DOI: 10.1016/s1474-4422(15)70016-5] [Citation(s) in RCA: 3561] [Impact Index Per Article: 395.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Increasing evidence suggests that Alzheimer's disease pathogenesis is not restricted to the neuronal compartment, but includes strong interactions with immunological mechanisms in the brain. Misfolded and aggregated proteins bind to pattern recognition receptors on microglia and astroglia, and trigger an innate immune response characterised by release of inflammatory mediators, which contribute to disease progression and severity. Genome-wide analysis suggests that several genes that increase the risk for sporadic Alzheimer's disease encode factors that regulate glial clearance of misfolded proteins and the inflammatory reaction. External factors, including systemic inflammation and obesity, are likely to interfere with immunological processes of the brain and further promote disease progression. Modulation of risk factors and targeting of these immune mechanisms could lead to future therapeutic or preventive strategies for Alzheimer's disease.
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Affiliation(s)
- Michael T Heneka
- Department of Neurology, University Hospital Bonn, University of Bonn, Bonn, Germany; German Center for Neurodegnerative Diseases (DZNE), Bonn, Germany.
| | - Monica J Carson
- Division of Biomedical Sciences, Center for Glial-Neuronal Interactions, University of California, Riverside, CA, USA
| | - Joseph El Khoury
- Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Gary E Landreth
- Alzheimer Research Laboratory, Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | | | | | - Andreas H Jacobs
- Department of Geriatrics, Johanniter Hospital, Bonn, Germany; European Institute for Molecular Imaging (EIMI) at the Westfalian Wilhelms University (WWU), Münster, Germany
| | - Tony Wyss-Coray
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA; Center for Tissue Regeneration, Repair, and Restoration, VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Javier Vitorica
- Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocio, Consejo Superior de Investigaciones Cientificas Universidad de Sevilla, Sevilla, Spain
| | - Richard M Ransohoff
- Department of Neuroscience, Neuroinflammation Research Center, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Karl Herrup
- Division of Life Science, Hong Kong University of Science and Technology, Hong Kong
| | - Sally A Frautschy
- Department of Neurology, David Geffen School of Medicine at the University of California, Los Angeles, the Geriatric, Research, and Clinical Center, Greater Los Angeles Veterans Affairs Healthcare System, Los Angeles, CA, USA
| | - Bente Finsen
- Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Guy C Brown
- Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - Alexei Verkhratsky
- Faculty of Life Sciences, The University of Manchester, Manchester, UK; Achucarro Center for Neuroscience, Basque Foundation for Science (IKERBASQUE), Bilbao, Spain; Department of Neurosciences, University of the Basque Country UPV/EHU (Euskal Herriko Unibertsitatea/Universidad del País Vasco) and CIBERNED (Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas), Leioa, Spain
| | - Koji Yamanaka
- Research Institute of Environmental Medicine, Nagoya University/RIKEN Brain Science Institute, Wako-shi, Japan
| | - Jari Koistinaho
- Department of Neurobiology, AI Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Eicke Latz
- German Center for Neurodegnerative Diseases (DZNE), Bonn, Germany; Institute of Innate Immunity, University of Bonn, Bonn, Germany; Department of InfectiousDiseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Annett Halle
- Max-Planck Research Group Neuroimmunology, Center of Advanced European Studies and Research (CAESAR), Bonn, Germany
| | - Gabor C Petzold
- Department of Neurology, University Hospital Bonn, University of Bonn, Bonn, Germany; German Center for Neurodegnerative Diseases (DZNE), Bonn, Germany
| | - Terrence Town
- Zilkha Neurogenetic Institute, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Dave Morgan
- Department of Molecular Pharmacology and Physiology, Byrd Alzheimer's Institute, University of South Florida College of Medicine, Tampa, FL, USA
| | - Mari L Shinohara
- Department of Immunology, Duke University Medical Center, Durham, NC, USA
| | - V Hugh Perry
- School of Biological Sciences, Southampton General Hospital, Southampton, UK
| | - Clive Holmes
- Clinical and Experimental Science, University of Southampton, Southampton, UK; Memory Assessment and Research Centre, Moorgreen Hospital, Southern Health Foundation Trust, Southampton, UK
| | - Nicolas G Bazan
- Louisiana State University Neuroscience Center of Excellence, Louisiana State University Health Sciences Center School of Medicine in New Orleans, LA, USA
| | - David J Brooks
- Division of Experimental Medicine, Imperial College London, Hammersmith Hospital, London, UK
| | - Stéphane Hunot
- Centre National de la Recherche Scientifique (CNRS), UMR 7225, Experimental Therapeutics of Neurodegeneration, Paris, France
| | - Bertrand Joseph
- Department of Oncology Pathology, Cancer Centrum Karolinska, Karolinska Institutet, Stockholm, Sweden
| | - Nikolaus Deigendesch
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Berlin, Germany
| | - Olga Garaschuk
- Institute of Physiology II, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Erik Boddeke
- Department of Neuroscience, University of Groningen, University Medical Centre Groningen, Groningen, Netherlands
| | | | - John C Breitner
- Centre for Studies on Prevention of Alzheimer's Disease, Douglas Mental Health University Institute, and the McGill University Faculty of Medicine, Montreal, Quebec, Canada
| | - Greg M Cole
- Department of Neurology, David Geffen School of Medicine at the University of California, Los Angeles, the Geriatric, Research, and Clinical Center, Greater Los Angeles Veterans Affairs Healthcare System, Los Angeles, CA, USA
| | - Douglas T Golenbock
- Department of InfectiousDiseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Markus P Kummer
- Department of Neurology, University Hospital Bonn, University of Bonn, Bonn, Germany
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31
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Abstract
Alzheimer's disease (AD) is the world's most common dementing illness, affecting over 150 million patients. Classically AD has been viewed as a neurodegenerative disease of the elderly, characterized by the extracellular deposition of misfolded amyloid-β (Aβ) peptide and the intracellular formation of neurofibrillary tangles. Only recently has neuroinflammation emerged as an important component of AD pathology. Experimental, genetic and epidemiological data now indicate a crucial role for activation of the innate immune system as a disease-promoting factor. The sustained formation and deposition of Aβ aggregates causes chronic activation of the immune system and disturbance of microglial clearance functions. Here we review advances in the molecular understanding of the inflammatory response in AD that point to novel therapeutic approaches for the treatment of this devastating disease.
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Affiliation(s)
- Michael T Heneka
- 1] Clinical Neuroscience, Department of Neurology, University of Bonn, Bonn, Germany. [2] Department of Medicine, Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, USA. [3] German Center for Neurodegenerative Diseases, Bonn, Germany
| | - Douglas T Golenbock
- Department of Medicine, Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Eicke Latz
- 1] Department of Medicine, Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, USA. [2] German Center for Neurodegenerative Diseases, Bonn, Germany. [3] Institute of Innate Immunology, University of Bonn, Bonn, Germany
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32
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Dowling JK, Tate MD, Golenbock DT, Mansell A. 39. Cytokine 2014. [DOI: 10.1016/j.cyto.2014.07.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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33
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Abstract
Innate immune receptors have a key role in immune surveillance by sensing microorganisms and initiating protective immune responses. However, the innate immune system is a classic 'double-edged sword' that can overreact to pathogens, which can have deleterious effects and lead to clinical manifestations. Recent studies have unveiled the complexity of innate immune receptors that function as sensors of Plasmodium spp. in the vertebrate host. This Review highlights the cellular and molecular mechanisms by which Plasmodium infection is sensed by different families of innate immune receptors. We also discuss how these events mediate both host resistance to infection and the pathogenesis of malaria.
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Affiliation(s)
- Ricardo T Gazzinelli
- 1] Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, 01605-02324 Worcester, Massachusetts, USA. [2] Laboratório de Imunopatologia, Centro de Pesquisa René Rachou, Fundação Oswaldo Cruz, 30190-002 Belo Horizonte, Minas Gerais, Brazil. [3] Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Parisa Kalantari
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, 01605-02324 Worcester, Massachusetts, USA
| | - Katherine A Fitzgerald
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, 01605-02324 Worcester, Massachusetts, USA
| | - Douglas T Golenbock
- 1] Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, 01605-02324 Worcester, Massachusetts, USA. [2] Laboratório de Imunopatologia, Centro de Pesquisa René Rachou, Fundação Oswaldo Cruz, 30190-002 Belo Horizonte, Minas Gerais, Brazil
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34
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Antonelli LRV, Leoratti FMS, Costa PAC, Rocha BC, Diniz SQ, Tada MS, Pereira DB, Teixeira-Carvalho A, Golenbock DT, Gonçalves R, Gazzinelli RT. The CD14+CD16+ inflammatory monocyte subset displays increased mitochondrial activity and effector function during acute Plasmodium vivax malaria. PLoS Pathog 2014; 10:e1004393. [PMID: 25233271 PMCID: PMC4169496 DOI: 10.1371/journal.ppat.1004393] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 08/11/2014] [Indexed: 01/22/2023] Open
Abstract
Infection with Plasmodium vivax results in strong activation of monocytes, which are important components of both the systemic inflammatory response and parasite control. The overall goal of this study was to define the role of monocytes during P. vivax malaria. Here, we demonstrate that P. vivax-infected patients display significant increase in circulating monocytes, which were defined as CD14(+)CD16- (classical), CD14(+)CD16(+) (inflammatory), and CD14loCD16(+) (patrolling) cells. While the classical and inflammatory monocytes were found to be the primary source of pro-inflammatory cytokines, the CD16(+) cells, in particular the CD14(+)CD16(+) monocytes, expressed the highest levels of activation markers, which included chemokine receptors and adhesion molecules. Morphologically, CD14(+) were distinguished from CD14lo monocytes by displaying larger and more active mitochondria. CD14(+)CD16(+) monocytes were more efficient in phagocytizing P. vivax-infected reticulocytes, which induced them to produce high levels of intracellular TNF-α and reactive oxygen species. Importantly, antibodies specific for ICAM-1, PECAM-1 or LFA-1 efficiently blocked the phagocytosis of infected reticulocytes by monocytes. Hence, our results provide key information on the mechanism by which CD14(+)CD16(+) cells control parasite burden, supporting the hypothesis that they play a role in resistance to P. vivax infection.
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Affiliation(s)
- Lis R. V. Antonelli
- Laboratório de Immunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
- * E-mail:
| | - Fabiana M. S. Leoratti
- Laboratório de Immunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
| | - Pedro A. C. Costa
- Laboratório de Immunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
| | - Bruno C. Rocha
- Laboratório de Immunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Suelen Q. Diniz
- Laboratório de Immunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
| | - Mauro S. Tada
- Centro de Pesquisas em Medicina Tropical de Rondônia, Porto Velho, Rondônia, Brazil
| | - Dhelio B. Pereira
- Centro de Pesquisas em Medicina Tropical de Rondônia, Porto Velho, Rondônia, Brazil
| | - Andrea Teixeira-Carvalho
- Laboratório de Biomarcadores de Diagnóstico e Monitoração, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
| | - Douglas T. Golenbock
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Ricardo Gonçalves
- Departamento de Patologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ricardo T. Gazzinelli
- Laboratório de Immunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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35
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Davaro F, Forde SD, Garfield M, Jiang Z, Halmen K, Tamburro ND, Kurt-Jones E, Fitzgerald KA, Golenbock DT, Wang D. 3-Hydroxyl-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor (statin)-induced 28-kDa interleukin-1β interferes with mature IL-1β signaling. J Biol Chem 2014; 289:16214-22. [PMID: 24790079 DOI: 10.1074/jbc.m114.571505] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Multiple clinical trials have shown that the 3-hydroxyl-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitors known as statins have anti-inflammatory effects. However, the underlying molecular mechanism remains unclear. The proinflammatory cytokine interleukin-1β (IL-1β) is synthesized as a non-active precursor. The 31-kDa pro-IL-1β is processed into the 17-kDa active form by caspase-1-activating inflammasomes. Here, we report a novel signaling pathway induced by statins, which leads to processing of pro-IL-1β into an intermediate 28-kDa form. This statin-induced IL-1β processing is independent of caspase-1- activating inflammasomes. The 28-kDa form of IL-1β cannot activate interleukin-1 receptor-1 (IL1R1) to signal inflammatory responses. Instead, it interferes with mature IL-1β signaling through IL-1R1 and therefore may dampen inflammatory responses initiated by mature IL-1β. These results may provide new clues to explain the anti-inflammatory effects of statins.
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Affiliation(s)
- Facundo Davaro
- From the Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Sorcha D Forde
- From the Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Mark Garfield
- NIAID, National Institutes of Health, Rockville, Maryland 20852
| | - Zhaozhao Jiang
- From the Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Kristen Halmen
- From the Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Nelsy Depaula Tamburro
- From the Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Evelyn Kurt-Jones
- From the Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Katherine A Fitzgerald
- From the Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Douglas T Golenbock
- From the Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
| | - Donghai Wang
- From the Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605 and
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36
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Gupta R, Ghosh S, Monks B, DeOliveira RB, Tzeng TC, Kalantari P, Nandy A, Bhattacharjee B, Chan J, Ferreira F, Rathinam V, Sharma S, Lien E, Silverman N, Fitzgerald K, Firon A, Trieu-Cuot P, Henneke P, Golenbock DT. RNA and β-hemolysin of group B Streptococcus induce interleukin-1β (IL-1β) by activating NLRP3 inflammasomes in mouse macrophages. J Biol Chem 2014; 289:13701-5. [PMID: 24692555 DOI: 10.1074/jbc.c114.548982] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The inflammatory cytokine IL-1β is critical for host responses against many human pathogens. Here, we define Group B Streptococcus (GBS)-mediated activation of the Nod-like receptor-P3 (NLRP3) inflammasome in macrophages. NLRP3 activation requires GBS expression of the cytolytic toxin, β-hemolysin, lysosomal acidification, and leakage. These processes allow the interaction of GBS RNA with cytosolic NLRP3. The present study supports a model in which GBS RNA, along with lysosomal components including cathepsins, leaks out of lysosomes and interacts with NLRP3 to induce IL-1β production.
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Affiliation(s)
- Rahul Gupta
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Shubhendu Ghosh
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Brian Monks
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Rosane B DeOliveira
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Te-Chen Tzeng
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Parisa Kalantari
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Anubhab Nandy
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Bornali Bhattacharjee
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Jennie Chan
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Fabianno Ferreira
- the Laboratório de Inflamação e Imunidade, Departamento de Imunologia, Instituto de Microbiologia, Universidade Federal do Rio de Janeiro (UFRJ), 21941-902 Rio de Janeiro, Brazil, and
| | - Vijay Rathinam
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Shruti Sharma
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Egil Lien
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Neal Silverman
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Katherine Fitzgerald
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Arnaud Firon
- the Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, 75724 Paris Cedex 15, France
| | - Patrick Trieu-Cuot
- the Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, 75724 Paris Cedex 15, France
| | - Philipp Henneke
- the Center of Chronic Immunodeficiency and Center of Pediatrics and Adolescent Medicine, University Medical Center Freiburg, 79106 Freiburg im Breisgau, Germany
| | - Douglas T Golenbock
- From the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01605,
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37
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Janssen E, Ozcan E, Liadaki K, Jabara HH, Manis J, Ullas S, Akira S, Fitzgerald KA, Golenbock DT, Geha RS. TRIF signaling is essential for TLR4-driven IgE class switching. J Immunol 2014; 192:2651-8. [PMID: 24532577 DOI: 10.4049/jimmunol.1300909] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The TLR4 ligand LPS causes mouse B cells to undergo IgE and IgG1 isotype switching in the presence of IL-4. TLR4 activates two signaling pathways mediated by the adaptor molecules MyD88 and Toll/IL-IR domain-containing adapter-inducing IFN-β (TRIF)-related adaptor molecule (TRAM), which recruits TRIF. Following stimulation with LPS plus IL-4, Tram(-/-) and Trif(-/-) B cells completely failed to express Cε germline transcripts (GLT) and secrete IgE. In contrast, Myd88(-/-) B cells had normal expression of Cε GLT but reduced IgE secretion in response to LPS plus IL-4. Following LPS plus IL-4 stimulation, Cγ1 GLT expression was modestly reduced in Tram(-/-) and Trif(-/-) B cells, whereas Aicda expression and IgG1 secretion were reduced in Tram(-/-), Trif(-/-), and Myd88(-/-) B cells. B cells from all strains secreted normal amounts of IgE and IgG1 in response to anti-CD40 plus IL-4. Following stimulation with LPS plus IL-4, Trif(-/-) B cells failed to sustain NF-κB p65 nuclear translocation beyond 3 h and had reduced binding of p65 to the Iε promoter. Addition of the NF-κB inhibitor, JSH-23, to wild-type B cells 15 h after LPS plus IL-4 stimulation selectively blocked Cε GLT expression and IgE secretion but had little effect on Cγ1 GLT expression and IgG secretion. These results indicate that sustained activation of NF-κB driven by TRIF is essential for LPS plus IL-4-driven activation of the Cε locus and class switching to IgE.
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Affiliation(s)
- Erin Janssen
- Division of Immunology, Boston Children's Hospital, Boston, MA 02115
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Ataide MA, Andrade WA, Zamboni DS, Wang D, Souza MDC, Franklin BS, Elian S, Martins FS, Pereira D, Reed G, Fitzgerald KA, Golenbock DT, Gazzinelli RT. Malaria-induced NLRP12/NLRP3-dependent caspase-1 activation mediates inflammation and hypersensitivity to bacterial superinfection. PLoS Pathog 2014; 10:e1003885. [PMID: 24453977 PMCID: PMC3894209 DOI: 10.1371/journal.ppat.1003885] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 11/29/2013] [Indexed: 12/20/2022] Open
Abstract
Cyclic paroxysm and high fever are hallmarks of malaria and are associated with high levels of pyrogenic cytokines, including IL-1β. In this report, we describe a signature for the expression of inflammasome-related genes and caspase-1 activation in malaria. Indeed, when we infected mice, Plasmodium infection was sufficient to promote MyD88-mediated caspase-1 activation, dependent on IFN-γ-priming and the expression of inflammasome components ASC, P2X7R, NLRP3 and/or NLRP12. Pro-IL-1β expression required a second stimulation with LPS and was also dependent on IFN-γ-priming and functional TNFR1. As a consequence of Plasmodium-induced caspase-1 activation, mice produced extremely high levels of IL-1β upon a second microbial stimulus, and became hypersensitive to septic shock. Therapeutic intervention with IL-1 receptor antagonist prevented bacterial-induced lethality in rodents. Similar to mice, we observed a significantly increased frequency of circulating CD14+CD16−Caspase-1+ and CD14dimCD16+Caspase-1+ monocytes in peripheral blood mononuclear cells from febrile malaria patients. These cells readily produced large amounts of IL-1β after stimulation with LPS. Furthermore, we observed the presence of inflammasome complexes in monocytes from malaria patients containing either NLRP3 or NLRP12 pyroptosomes. We conclude that NLRP12/NLRP3-dependent activation of caspase-1 is likely to be a key event in mediating systemic production of IL-1β and hypersensitivity to secondary bacterial infection during malaria. Together Plasmodium falciparum and P. vivax infect approximately 250 million individuals, reaping life of near one million children every year. Extensive research on malaria pathogenesis has funneled into the consensus that the clinical manifestations are often a consequence of the systemic inflammation. Importantly, secondary bacterial and viral infections potentiate this inflammatory reaction being important co-factors for the development of severe disease. One of the hallmarks of malaria syndrome is the paroxysm, which is characterized by high fever associated with peak of parasitemia. In this study we dissected the mechanisms of induction and the importance of the pyrogenic cytokine, IL-1β in the pathogenesis of malaria. Our results demonstrate the critical role of the innate immune receptors named Toll-Like Receptors and inflammasome on induction, processing and release of active form of IL-1β during malaria. Importantly, we provide evidences that bacterial superinfection further potentiates the Plasmodium-induced systemic inflammation, leading to the release of bulk amounts of IL-1β and severe disease. Hence, this study uncovers new checkpoints that could be targeted for preventing systemic inflammation and severe malaria.
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MESH Headings
- Animals
- Bacterial Infections/genetics
- Bacterial Infections/immunology
- Bacterial Infections/metabolism
- Carrier Proteins/genetics
- Carrier Proteins/immunology
- Carrier Proteins/metabolism
- Caspase 1/genetics
- Caspase 1/immunology
- Caspase 1/metabolism
- Female
- Humans
- Inflammasomes/genetics
- Inflammasomes/immunology
- Inflammasomes/metabolism
- Inflammation/genetics
- Inflammation/immunology
- Inflammation/metabolism
- Inflammation/pathology
- Interleukin-1beta/genetics
- Interleukin-1beta/immunology
- Intracellular Signaling Peptides and Proteins/genetics
- Intracellular Signaling Peptides and Proteins/immunology
- Intracellular Signaling Peptides and Proteins/metabolism
- Malaria, Vivax/immunology
- Malaria, Vivax/metabolism
- Malaria, Vivax/microbiology
- Malaria, Vivax/pathology
- Male
- Mice
- Mice, Knockout
- Monocytes/immunology
- Monocytes/metabolism
- Monocytes/pathology
- NLR Family, Pyrin Domain-Containing 3 Protein
- Plasmodium chabaudi/immunology
- Plasmodium chabaudi/metabolism
- Plasmodium vivax/immunology
- Plasmodium vivax/metabolism
- Shock, Septic/genetics
- Shock, Septic/immunology
- Shock, Septic/metabolism
- Shock, Septic/pathology
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Affiliation(s)
- Marco A. Ataide
- Laboratório de Imunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Warrison A. Andrade
- Laboratório de Imunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Dario S. Zamboni
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Donghai Wang
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Maria do Carmo Souza
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Bernardo S. Franklin
- Laboratório de Imunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
| | - Samir Elian
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Flaviano S. Martins
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Dhelio Pereira
- Centro de Pesquisas em Medicina Tropical, Porto Velho, Rondônia, Brazil
| | - George Reed
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Katherine A. Fitzgerald
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Douglas T. Golenbock
- Laboratório de Imunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Ricardo T. Gazzinelli
- Laboratório de Imunopatologia, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- * E-mail:
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39
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Kalantari P, DeOliveira RB, Chan J, Corbett Y, Rathinam V, Stutz A, Latz E, Gazzinelli RT, Golenbock DT, Fitzgerald KA. Dual engagement of the NLRP3 and AIM2 inflammasomes by plasmodium-derived hemozoin and DNA during malaria. Cell Rep 2014; 6:196-210. [PMID: 24388751 DOI: 10.1016/j.celrep.2013.12.014] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Revised: 11/12/2013] [Accepted: 12/10/2013] [Indexed: 12/19/2022] Open
Abstract
Hemozoin (Hz) is the crystalline detoxification product of hemoglobin in Plasmodium-infected erythrocytes. We previously proposed that Hz can carry plasmodial DNA into a subcellular compartment that is accessible to Toll-like receptor 9 (TLR9), inducing an inflammatory signal. Hz also activates the NLRP3 inflammasome in primed cells. We found that Hz appears to colocalize with DNA in infected erythrocytes, even before RBC rupture or phagolysosomal digestion. Using synthetic Hz coated in vitro with plasmodial genomic DNA (gDNA) or CpG oligodeoxynucleotides, we observed that DNA-complexed Hz induced TLR9 translocation, providing a priming and an activation signal for inflammasomes. After phagocytosis, Hz and DNA dissociate. Hz subsequently induces phagolysosomal destabilization, allowing phagolysosomal contents access to the cytosol, where DNA receptors become activated. Similar observations were made with Plasmodium-infected RBCs. Finally, infected erythrocytes activated both the NLRP3 and AIM2 inflammasomes. These observations suggest that Hz and DNA work together to induce systemic inflammation during malaria.
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Affiliation(s)
- Parisa Kalantari
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Rosane B DeOliveira
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Jennie Chan
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Yolanda Corbett
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università Degli Studi di Milano, Via Pascal 36, Milano 20133, Italy
| | - Vijay Rathinam
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Andrea Stutz
- Institute of Innate Immunity, Biomedical Center, 1G008, University Hospitals, University of Bonn, Sigmund-Freud-Strasse 25, Bonn 53127, Germany
| | - Eicke Latz
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA; Institute of Innate Immunity, Biomedical Center, 1G008, University Hospitals, University of Bonn, Sigmund-Freud-Strasse 25, Bonn 53127, Germany
| | - Ricardo T Gazzinelli
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA; Department of Parasitology and Department of Biochemistry and Immunology, Biological Sciences Institute, Federal University of Minas Gerais, Avenida Antonio Carlos 6627, Belo Horizonte, MG 31270, Brazil
| | - Douglas T Golenbock
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Katherine A Fitzgerald
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
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40
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Liehl P, Zuzarte-Luís V, Chan J, Zillinger T, Baptista F, Carapau D, Konert M, Hanson KK, Carret C, Lassnig C, Müller M, Kalinke U, Saeed M, Chora AF, Golenbock DT, Strobl B, Prudêncio M, Coelho LP, Kappe SH, Superti-Furga G, Pichlmair A, Vigário AM, Rice CM, Fitzgerald KA, Barchet W, Mota MM. Host-cell sensors for Plasmodium activate innate immunity against liver-stage infection. Nat Med 2013; 20:47-53. [PMID: 24362933 DOI: 10.1038/nm.3424] [Citation(s) in RCA: 201] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 11/08/2013] [Indexed: 12/15/2022]
Abstract
Before they infect red blood cells and cause malaria, Plasmodium parasites undergo an obligate and clinically silent expansion phase in the liver that is supposedly undetected by the host. Here, we demonstrate the engagement of a type I interferon (IFN) response during Plasmodium replication in the liver. We identified Plasmodium RNA as a previously unrecognized pathogen-associated molecular pattern (PAMP) capable of activating a type I IFN response via the cytosolic pattern recognition receptor Mda5. This response, initiated by liver-resident cells through the adaptor molecule for cytosolic RNA sensors, Mavs, and the transcription factors Irf3 and Irf7, is propagated by hepatocytes in an interferon-α/β receptor-dependent manner. This signaling pathway is critical for immune cell-mediated host resistance to liver-stage Plasmodium infection, which we find can be primed with other PAMPs, including hepatitis C virus RNA. Together, our results show that the liver has sensor mechanisms for Plasmodium that mediate a functional antiparasite response driven by type I IFN.
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Affiliation(s)
- Peter Liehl
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
| | - Vanessa Zuzarte-Luís
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
| | - Jennie Chan
- 1] Department of Medicine, Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, USA. [2]
| | - Thomas Zillinger
- 1] Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital of Bonn, Bonn, Germany. [2]
| | - Fernanda Baptista
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
| | - Daniel Carapau
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
| | - Madlen Konert
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
| | - Kirsten K Hanson
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
| | - Céline Carret
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
| | - Caroline Lassnig
- Institute of Animal Breeding and Genetics and Biomodels, Austria University of Veterinary Medicine Vienna, Vienna, Austria
| | - Mathias Müller
- Institute of Animal Breeding and Genetics and Biomodels, Austria University of Veterinary Medicine Vienna, Vienna, Austria
| | - Ulrich Kalinke
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, Hannover Medical School and Helmholtz Centre for Infection Research, Hannover, Germany
| | - Mohsan Saeed
- Laboratory of Virology and Infectious Diseases, Center for the Study of Hepatitis C, The Rockefeller University, New York, New York, USA
| | - Angelo Ferreira Chora
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
| | - Douglas T Golenbock
- Department of Medicine, Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Birgit Strobl
- Institute of Animal Breeding and Genetics and Biomodels, Austria University of Veterinary Medicine Vienna, Vienna, Austria
| | - Miguel Prudêncio
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
| | - Luis P Coelho
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
| | - Stefan H Kappe
- Seattle Biomedical Research Institute, Seattle, Washington, USA
| | - Giulio Superti-Furga
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Andreas Pichlmair
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Ana M Vigário
- 1] Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal. [2] Unidade de Ciências Médicas, Centro de compentência de ciências da vida, Universidade da Madeira, Funchal, Portugal
| | - Charles M Rice
- Laboratory of Virology and Infectious Diseases, Center for the Study of Hepatitis C, The Rockefeller University, New York, New York, USA
| | - Katherine A Fitzgerald
- Department of Medicine, Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Winfried Barchet
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital of Bonn, Bonn, Germany
| | - Maria M Mota
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal
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41
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Kishimoto M, Yoshimura A, Naito M, Okamoto K, Yamamoto K, Golenbock DT, Hara Y, Nakayama K. Gingipains Inactivate a Cell Surface Ligand onPorphyromonas gingivalisThat Induces TLR2- and TLR4-Independent Signaling. Microbiol Immunol 2013; 50:315-25. [PMID: 16625053 DOI: 10.1111/j.1348-0421.2006.tb03799.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Arginine-specific gingipain and lysine-specific gingipain are two major cysteine proteinases produced by Porphyromonas gingivalis. To clarify the role of gingipains in the interaction between P. gingivalis and the innate immune system, CHO reporter cells expressing TLR2 or TLR4 were stimulated with wildtype or gingipain-deficient P. gingivalis cells and activation of nuclear factor-kappaB in these cells was examined. While CHO/CD14 cells and 7.19 cells, an MD-2-defective mutant derived from CHO/CD14 cells, failed to respond to wild-type P. gingivalis, they responded to gingipain-deficient P. gingivalis. On the other hand, CHO/CD14/TLR2 cells responded to both wild-type and gingipain-deficient P. gingivalis. These results suggested that gingipains have no effects on TLR2-dependent signaling from P. gingivalis but have inhibitory effects on TLR2-and TLR4-independent signaling in CHO cells. Indeed, the activity of gingipain-deficient P. gingivalis to induce the activation of 7.19 cells was diminished after treatment of the bacterial cells with gingipains. We next partially purified bacterial cell components activating 7.19 cells from gingipain-deficient P. gingivalis. The activity of the partially purified components was diminished by treatment with heat or gingipains. It is also noteworthy that anti-CD14 mAb inhibited the activation of 7.19 cells induced by the partially purified components. These results indicated that the components of P. gingivalis that were able to induce TLR2-and TLR4-independent signaling were inactivated by gingipains before being recognized by CD14. The inactivation of the components would be helpful for P. gingivalis to escape from the innate immune system.
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Affiliation(s)
- Mami Kishimoto
- Division of Periodontology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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42
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Sheedy FJ, Grebe A, Rayner KJ, Kalantari P, Ramkhelawon B, Carpenter SB, Becker CE, Ediriweera HN, Mullick AE, Golenbock DT, Stuart LM, Latz E, Fitzgerald KA, Moore KJ. CD36 coordinates NLRP3 inflammasome activation by facilitating intracellular nucleation of soluble ligands into particulate ligands in sterile inflammation. Nat Immunol 2013; 14:812-20. [PMID: 23812099 PMCID: PMC3720827 DOI: 10.1038/ni.2639] [Citation(s) in RCA: 660] [Impact Index Per Article: 60.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 05/09/2013] [Indexed: 12/23/2022]
Abstract
Particulate ligands including cholesterol crystals and amyloid fibrils induce NLRP3-dependent production of interleukin-1β (IL-1β) in atherosclerosis, Alzheimer's disease and diabetes. Soluble endogenous ligands including oxidized-LDL, amyloid-β and amylin peptides accumulate in these diseases. Here we identify a CD36-mediated endocytic pathway that coordinates the intracellular conversion of these soluble ligands to crystals or fibrils, resulting in lysosomal disruption and NLRP3-inflammasome activation. Consequently, macrophages lacking CD36 failed to elicit IL-1β production in response to these ligands and targeting CD36 in atherosclerotic mice reduced serum IL-1β and plaque cholesterol crystal accumulation. Collectively, these findings highlight the importance of CD36 in the accrual and nucleation of NLRP3 ligands from within the macrophage and position CD36 as a central regulator of inflammasome activation in sterile inflammation.
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Affiliation(s)
- Frederick J Sheedy
- Department of Medicine, Marc and Ruti Bell Program for Vascular Biology and Disease, The Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, New York, USA
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43
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Cywes-Bentley C, Skurnik D, Zaidi T, Roux D, DeOliveira RB, Garrett WS, Lu X, O’Malley J, Kinzel K, Zaidi T, Rey A, Perrin C, Fichorova RN, Kayatani AKK, Maira-Litràn T, Gening ML, Tsvetkov YE, Nifantiev NE, Bakaletz LO, Pelton SI, Golenbock DT, Pier GB. Antibody to a conserved antigenic target is protective against diverse prokaryotic and eukaryotic pathogens. Proc Natl Acad Sci U S A 2013; 110:E2209-18. [PMID: 23716675 PMCID: PMC3683766 DOI: 10.1073/pnas.1303573110] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Microbial capsular antigens are effective vaccines but are chemically and immunologically diverse, resulting in a major barrier to their use against multiple pathogens. A β-(1→6)-linked poly-N-acetyl-d-glucosamine (PNAG) surface capsule is synthesized by four proteins encoded in genetic loci designated intercellular adhesion in Staphylococcus aureus or polyglucosamine in selected Gram-negative bacterial pathogens. We report that many microbial pathogens lacking an identifiable intercellular adhesion or polyglucosamine locus produce PNAG, including Gram-positive, Gram-negative, and fungal pathogens, as well as protozoa, e.g., Trichomonas vaginalis, Plasmodium berghei, and sporozoites and blood-stage forms of Plasmodium falciparum. Natural antibody to PNAG is common in humans and animals and binds primarily to the highly acetylated glycoform of PNAG but is not protective against infection due to lack of deposition of complement opsonins. Polyclonal animal antibody raised to deacetylated glycoforms of PNAG and a fully human IgG1 monoclonal antibody that both bind to native and deacetylated glycoforms of PNAG mediated complement-dependent opsonic or bactericidal killing and protected mice against local and/or systemic infections by Streptococcus pyogenes, Streptococcus pneumoniae, Listeria monocytogenes, Neisseria meningitidis serogroup B, Candida albicans, and P. berghei ANKA, and against colonic pathology in a model of infectious colitis. PNAG is also a capsular polysaccharide for Neisseria gonorrhoeae and nontypable Hemophilus influenzae, and protects cells from environmental stress. Vaccination targeting PNAG could contribute to immunity against serious and diverse prokaryotic and eukaryotic pathogens, and the conserved production of PNAG suggests that it is a critical factor in microbial biology.
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Affiliation(s)
- Colette Cywes-Bentley
- Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA 02115
| | - David Skurnik
- Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA 02115
| | - Tanweer Zaidi
- Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA 02115
| | - Damien Roux
- Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA 02115
| | - Rosane B. DeOliveira
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Wendy S. Garrett
- Departments of Immunology and Infectious Diseases, Genetics and Complex Diseases, Dana–Farber Cancer Institute, Harvard School of Public Health, Boston, MA 02115
| | - Xi Lu
- Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA 02115
| | - Jennifer O’Malley
- Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA 02115
| | - Kathryn Kinzel
- Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA 02115
| | - Tauqeer Zaidi
- Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA 02115
| | - Astrid Rey
- Sanofi Research and Development, Therapeutic Strategic Unit, Infectious Disease, 31270 Toulouse, France
| | - Christophe Perrin
- Sanofi Research and Development, Therapeutic Strategic Unit, Infectious Disease, 31270 Toulouse, France
| | - Raina N. Fichorova
- Laboratory of Genital Tract Biology, Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women's Hospital/Harvard Medical School, Boston, MA 02115
| | - Alexander K. K. Kayatani
- Vaccine Branch, Military Malaria Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910
| | - Tomas Maira-Litràn
- Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA 02115
| | - Marina L. Gening
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Moscow 119991, Russia
| | - Yury E. Tsvetkov
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Moscow 119991, Russia
| | - Nikolay E. Nifantiev
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Moscow 119991, Russia
| | - Lauren O. Bakaletz
- The Research Institute at Nationwide Children's Hospital and The Ohio State University College of Medicine, Columbus, OH 43205; and
| | - Stephen I. Pelton
- Department of Pediatric Infectious Diseases, Boston University Medical Center, Boston, MA 02118
| | - Douglas T. Golenbock
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Gerald B. Pier
- Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA 02115
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Firon A, Tazi A, Da Cunha V, Brinster S, Sauvage E, Dramsi S, Golenbock DT, Glaser P, Poyart C, Trieu-Cuot P. The Abi-domain protein Abx1 interacts with the CovS histidine kinase to control virulence gene expression in group B Streptococcus. PLoS Pathog 2013; 9:e1003179. [PMID: 23436996 PMCID: PMC3578759 DOI: 10.1371/journal.ppat.1003179] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Accepted: 12/19/2012] [Indexed: 12/20/2022] Open
Abstract
Group B Streptococcus (GBS), a common commensal of the female genital tract, is the leading cause of invasive infections in neonates. Expression of major GBS virulence factors, such as the hemolysin operon cyl, is regulated directly at the transcriptional level by the CovSR two-component system. Using a random genetic approach, we identified a multi-spanning transmembrane protein, Abx1, essential for the production of the GBS hemolysin. Despite its similarity to eukaryotic CaaX proteases, the Abx1 function is not involved in a post-translational modification of the GBS hemolysin. Instead, we demonstrate that Abx1 regulates transcription of several virulence genes, including those comprising the hemolysin operon, by a CovSR-dependent mechanism. By combining genetic analyses, transcriptome profiling, and site-directed mutagenesis, we showed that Abx1 is a regulator of the histidine kinase CovS. Overexpression of Abx1 is sufficient to activate virulence gene expression through CovS, overcoming the need for an additional signal. Conversely, the absence of Abx1 has the opposite effect on virulence gene expression consistent with CovS locked in a kinase-competent state. Using a bacterial two-hybrid system, direct interaction between Abx1 and CovS was mapped specifically to CovS domains involved in signal processing. We demonstrate that the CovSR two-component system is the core of a signaling pathway integrating the regulation of CovS by Abx1 in addition to the regulation of CovR by the serine/threonine kinase Stk1. In conclusion, our study reports a regulatory function for Abx1, a member of a large protein family with a characteristic Abi-domain, which forms a signaling complex with the histidine kinase CovS in GBS. The gram-positive Streptococcus genus includes three major human pathogens that are members of the normal microflora: Streptococcus pneumoniae (also known as the pneumococcus), Streptococcus pyogenes (Group A Streptococcus), and Streptococcus agalactiae (Group B Streptococcus). Their carriage in the population is highly dynamic and mostly asymptomatic. However, each of these species can cause a wide spectrum of diseases, from local infections to systemic and fatal infections including septicemia and meningitis. Expression of streptococcal virulence-associated genes is tightly regulated at the transcriptional level. However, the signal(s) and the precise molecular events controlling the switch from commensalism to virulence are not yet understood. In this study, we identified and characterized a bacterial protein essential for virulence gene expression in Group B Streptococcus, the main pathogen of neonates. We show that this transmembrane protein, named Abx1, interacts with the histidine kinase CovS to modulate the activity of the major regulator of virulence CovR. We define how a core set of four proteins, Abx1, CovS, CovR, and the serine/threonine kinase Stk1, interact to control the expression of virulence genes in S. agalactiae. We propose that Abx1-like proteins, that are widespread in bacteria, might be part of a conserved mechanism of two-component system regulation.
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Affiliation(s)
- Arnaud Firon
- Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, Paris, France.
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Wang D, Höing S, Patterson HC, Ahmad UM, Rathinam VAK, Rajewsky K, Fitzgerald KA, Golenbock DT. Inflammation in mice ectopically expressing human Pyogenic Arthritis, Pyoderma Gangrenosum, and Acne (PAPA) Syndrome-associated PSTPIP1 A230T mutant proteins. J Biol Chem 2013; 288:4594-601. [PMID: 23293022 DOI: 10.1074/jbc.m112.443077] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Pyogenic Arthritis, Pyoderma Gangrenosum, and Acne Syndrome (PAPA syndrome) is an autoinflammatory disease caused by aberrant production of the proinflammatory cytokine interleukin-1. Mutations in the gene encoding proline serine threonine phosphatase-interacting protein-1 (PSTPIP1) have been linked to PAPA syndrome. PSTPIP1 is an adaptor protein that interacts with PYRIN, the protein encoded by the Mediterranean Fever (MEFV) gene whose mutations cause Familial Mediterranean Fever (FMF). However, the pathophysiological function of PSTPIP1 remains to be elucidated. We have generated mouse strains that either are PSTPIP1 deficient or ectopically express mutant PSTPIP1. Results from analyzing these mice suggested that PSTPIP1 is not an essential regulator of the Nlrp3, Aim2, or Nlrc4 inflammasomes. Although common features of human PAPA syndrome such as pyogenic arthritis and skin inflammation were not recapitulated in the mouse model, ectopic expression of the mutant but not the wild type PSTPIP1 in mice lead to partial embryonic lethality, growth retardation, and elevated level of circulating proinflammatory cytokines.
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Affiliation(s)
- Donghai Wang
- Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA.
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Andrade WA, Souza MDC, Ramos-Martinez E, Nagpal K, Dutra MS, Melo MB, Bartholomeu DC, Ghosh S, Golenbock DT, Gazzinelli RT. Combined action of nucleic acid-sensing Toll-like receptors and TLR11/TLR12 heterodimers imparts resistance to Toxoplasma gondii in mice. Cell Host Microbe 2013; 13:42-53. [PMID: 23290966 DOI: 10.1016/j.chom.2012.12.003] [Citation(s) in RCA: 140] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 11/05/2012] [Accepted: 12/13/2012] [Indexed: 11/16/2022]
Abstract
"Triple-defective" (3d) mice carrying a mutation in UNC93B1, a chaperone for the endosomal nucleic acid-sensing (NAS) Toll-like receptors TLR3, TLR7, and TLR9, are highly susceptible to Toxoplasma gondii infection. However, none of the single or even the triple NAS-TLR-deficient animals recapitulated the 3d susceptible phenotype to experimental toxoplasmosis. Investigating this further, we found that while parasite RNA and DNA activate innate immune responses via TLR7 and TLR9, TLR11 and TLR12 working as heterodimers are required for sensing and responding to Toxoplasma profilin. Consequently, the triple TLR7/TLR9/TLR11-deficient mice are highly susceptible to T. gondii infection, recapitulating the phenotype of 3d mice. Humans lack functional TLR11 and TLR12 genes. Consistently, human cells produce high levels of proinflammatory cytokines in response to parasite-derived RNA and DNA, but not to Toxoplasma profilin, supporting a more critical role for NAS-TLRs in human toxoplasmosis.
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Heneka MT, Kummer MP, Stutz A, Delekate A, Schwartz S, Vieira-Saecker A, Griep A, Axt D, Remus A, Tzeng TC, Gelpi E, Halle A, Korte M, Latz E, Golenbock DT. NLRP3 is activated in Alzheimer's disease and contributes to pathology in APP/PS1 mice. Nature 2012; 493:674-8. [PMID: 23254930 PMCID: PMC3812809 DOI: 10.1038/nature11729] [Citation(s) in RCA: 1817] [Impact Index Per Article: 151.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Accepted: 10/30/2012] [Indexed: 01/22/2023]
Abstract
Alzheimer´s Disease (AD) is the world’s most common dementing illness. Deposition of amyloid beta peptide (Aβ) drives cerebral neuroinflammation by activating microglia1,2. Indeed, Aβ activation of the NLRP3 inflammasome in microglia is fundamental for IL-1β maturation and subsequent inflammatory events3. However, it remains unknown whether NLRP3 activation contributes to AD in vivo. Here, we demonstrate strongly enhanced active caspase-1 expression in human MCI and AD brains suggesting a role for the inflammasome in this neurodegenerative disease. NLRP3−/− or caspase-1−/− mice carrying mutations associated with familiar AD were largely protected from loss of spatial memory and other AD-associated sequelae and demonstrated reduced brain caspase-1 and IL-1β activation as well as enhanced Aβ clearance. Furthermore, NLRP3 inflammasome deficiency skewed microglial cells to an M2 phenotype and resulted in the decreased deposition of Aβ in the APP/PS1 model of Alzheimer’s disease. These results reveal an important role for the NLRP3 / caspase-1 axis in AD pathogenesis, and suggest that NLRP3 inflammasome inhibition represents a novel therapeutic intervention for AD.
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Affiliation(s)
- Michael T Heneka
- Clinical Neuroscience Unit, Department of Neurology, University of Bonn, Sigmund-Freud-Strasse 25, 53127 Bonn, Germany.
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48
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Basset A, Zhang F, Benes C, Sayeed S, Herd M, Thompson C, Golenbock DT, Camilli A, Malley R. Toll-like receptor (TLR) 2 mediates inflammatory responses to oligomerized RrgA pneumococcal pilus type 1 protein. J Biol Chem 2012; 288:2665-75. [PMID: 23233677 DOI: 10.1074/jbc.m112.398875] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The pneumococcal type 1 pilus is an inflammatory and adherence-promoting structure associated with increased virulence in mouse models. We show that RrgA, an ancillary pilus subunit devoid of a lipidation motif, particularly when presented as part of an oligomer, is a TLR2 agonist. The surface-exposed domain III, and in particular a 49-amino acid sequence (P3), of the protein is responsible for the TLR2 activity of RrgA. A pneumococcal mutant carrying RrgA with a deletion of the P3 region was significantly reduced in its ability to activate TLR2 and induce TNF-α responses after mouse intraperitoneal infection, whereas no such difference could be noted when TLR2(-/-) mice were challenged, further implicating this region in recognition by TLR2. Thus, we conclude that the type 1 pneumococcal pilus can activate cells via TLR2, and the ancillary pilus subunit RrgA is a key component of this activation.
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Affiliation(s)
- Alan Basset
- Division of Infectious Diseases, Department of Medicine, Boston Children's Hospital, Boston, Massachusetts 02115, USA
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49
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Ramirez A, Rathinam V, Fitzgerald KA, Golenbock DT, Mathew A. Defective pro-IL-1β responses in macrophages from aged mice. Immun Ageing 2012; 9:27. [PMID: 23228123 PMCID: PMC3545921 DOI: 10.1186/1742-4933-9-27] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Accepted: 12/05/2012] [Indexed: 12/22/2022]
Abstract
Background Cytokines regulated by the inflammasome pathway have been extensively implicated in various age-related immune pathologies. We set out to elucidate the contribution of the nod-like receptor protein 3 (NLRP3) inflammasome pathway to the previously described deficiencies in IL-1β production by macrophages from aged mice. We examined the production of pro-IL-1β and its conversion into IL-1β as two separate steps and compared these cytokine responses in bone marrow derived macrophages from young (6–8 weeks) and aged (18–24 months) C57BL/6 mice. Findings Relative to macrophages from young mice, macrophages from aged mice produced less pro-IL-1β after TLR4 stimulation with LPS. However upon activation of the NLRP3 inflammasome with ATP, macrophages from young and aged mice were able to efficiently convert and secrete intracellular pro-cytokines as functional cytokines. Conclusions Lower levels of IL-1β production are a result of slower and lower overall production of pro-IL-1β in macrophages from aged mice.
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Affiliation(s)
- Alejandro Ramirez
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, S6-862, 55 Lake Avenue North, Worcester, MA, 01655, USA.
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Abstract
Although a great public heath success, vaccines provide suboptimal protection in some patient populations and are not available to protect against many infectious diseases. Insights from innate immunity research have led to a better understanding of how existing vaccines work and have informed vaccine development. New adjuvants and delivery systems are being designed based upon their capacity to stimulate innate immune sensors and target antigens to dendritic cells, the cells responsible for initiating adaptive immune responses. Incorporating these adjuvants and delivery systems in vaccines can beneficially alter the quantitative and qualitative nature of the adaptive immune response, resulting in enhanced protection.
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Affiliation(s)
- Stuart M Levitz
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA.
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