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Lima MIS, Corrêa MBC, Moraes ECDS, Oliveira JDDD, de Souza Santos P, de Souza AG, Goulart IMB, Goulart LR. HSP60 mimetic peptides from Mycobacterium leprae as new antigens for immunodiagnosis of Leprosy. AMB Express 2023; 13:120. [PMID: 37891336 PMCID: PMC10611693 DOI: 10.1186/s13568-023-01625-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
The early diagnosis of leprosy serves as an important tool to reduce the incidence of this disease in the world. Phage display (PD) technology can be used for mapping new antigens to the development of immunodiagnostic platforms. Our objective was to identify peptides that mimic Mycobacterium leprae proteins as serological markers using phage display technology. The phages were obtained in the biopanning using negative and positive serum from household contacts and leprosy patients, respectively. Then, the peptides were synthesized and validated in silico and in vitro for detection of IgG from patients and contacts. To characterize the native protein of M. leprae, scFv antibodies were selected against the synthetic peptides by PD. The scFv binding protein was obtained by immunocapture and confirmed using mass spectrometry. We selected two phase-fused peptides, MPML12 and MPML14, which mimic the HSP60 protein from M. leprae. The peptides MPML12 and MPML14 obtained 100% and 92.85% positivity in lepromatous patients. MPML12 and MPM14 detect IgG, especially in the multibacillary forms. The MPML12 and MPML14 peptides had positivity of 11.1% and 16.6% in household contacts, respectively. There was no cross-reaction in patient's samples with visceral leishmaniasis, tuberculosis and other mycobacteriosis for both peptides. Given these results and the easy obtainment of mimetic antigens, our peptides are promising markers for application in the diagnosis of leprosy, especially in endemic and hyperendemic regions.
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Affiliation(s)
- Mayara Ingrid Sousa Lima
- Laboratory of Genetics and Molecular Biology, Department of Biology, Federal University of Maranhão, São Luís, MA, Brazil.
- Postgraduate Program on Health and Environment and Postgraduate Program on Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil.
| | | | | | | | - Paula de Souza Santos
- Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, MG, Brazil
| | - Aline Gomes de Souza
- Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, MG, Brazil
| | - Isabela Maria Bernardes Goulart
- National Reference Center in Sanitary Dermatology and Leprosy, School of Medicine, Clinics' Hospital, Federal University of Uberlandia, Uberlandia, MG, Brazil.
| | - Luiz Ricardo Goulart
- Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, MG, Brazil
- Department of Medical Microbiology and Immunology, University of California, Davis, CA, USA
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Barroso FAL, de Jesus LCL, de Castro CP, Batista VL, Ferreira Ê, Fernandes RS, de Barros ALB, Leclerq SY, Azevedo V, Mancha-Agresti P, Drumond MM. Intake of Lactobacillus delbrueckii (pExu: hsp65) Prevents the Inflammation and the Disorganization of the Intestinal Mucosa in a Mouse Model of Mucositis. Microorganisms 2021; 9:microorganisms9010107. [PMID: 33466324 PMCID: PMC7824804 DOI: 10.3390/microorganisms9010107] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/24/2020] [Accepted: 11/30/2020] [Indexed: 02/07/2023] Open
Abstract
5-Fluorouracil (5-FU) is an antineoplastic drug that causes, as a side effect, intestinal mucositis, acute inflammation in the small bowel. The Heat Shock Protein (Hsp) are highly expressed in inflammatory conditions, developing an important role in immune modulation. Thus, they are potential candidates for the treatment of inflammatory diseases. In the mucositis mouse model, the present study aimed to evaluate the beneficial effect of oral administration of milk fermented by Lactobacillus delbrueckii CIDCA 133 (pExu:hsp65), a recombinant strain. This approach showed increased levels of sIgA in the intestinal fluid, reducing inflammatory infiltrate and intestinal permeability. Additionally, the histological score was improved. Protection was associated with a reduction in the gene expression of pro-inflammatory cytokines such as Tnf, Il6, Il12, and Il1b, and an increase in Il10, Muc2, and claudin 1 (Cldn1) and 2 (Cldn2) gene expression in ileum tissue. These findings are corroborated with the increased number of goblet cells, the electronic microscopy images, and the reduction of intestinal permeability. The administration of milk fermented by this recombinant probiotic strain was also able to reverse the high levels of gene expression of Tlrs caused by the 5-FU. Thus, the rCIDCA 133:Hsp65 strain was revealed to be a promising preventive strategy for small bowel inflammation.
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Affiliation(s)
- Fernanda Alvarenga Lima Barroso
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de—Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (F.A.L.B.); (L.C.L.d.J.); (C.P.d.C.); (V.L.B.); (V.A.)
| | - Luís Cláudio Lima de Jesus
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de—Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (F.A.L.B.); (L.C.L.d.J.); (C.P.d.C.); (V.L.B.); (V.A.)
| | - Camila Prosperi de Castro
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de—Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (F.A.L.B.); (L.C.L.d.J.); (C.P.d.C.); (V.L.B.); (V.A.)
| | - Viviane Lima Batista
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de—Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (F.A.L.B.); (L.C.L.d.J.); (C.P.d.C.); (V.L.B.); (V.A.)
| | - Ênio Ferreira
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil;
| | - Renata Salgado Fernandes
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Campus da UFMG, Universidade Federal de Minas Gerais, Cidade Universitária, Belo Horizonte 31270-901, Brazil; (R.S.F.); (A.L.B.d.B.)
| | - André Luís Branco de Barros
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Campus da UFMG, Universidade Federal de Minas Gerais, Cidade Universitária, Belo Horizonte 31270-901, Brazil; (R.S.F.); (A.L.B.d.B.)
| | - Sophie Yvette Leclerq
- Laboratório de Inovação Biotecnológica, Fundação Ezequiel Dias (FUNED), Belo Horizonte 30510-010, Brazil;
| | - Vasco Azevedo
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de—Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (F.A.L.B.); (L.C.L.d.J.); (C.P.d.C.); (V.L.B.); (V.A.)
| | - Pamela Mancha-Agresti
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de—Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (F.A.L.B.); (L.C.L.d.J.); (C.P.d.C.); (V.L.B.); (V.A.)
- Faculdade de Minas-Faminas-BH, Medicina, Belo Horizonte 31744-007, Brazil
- Correspondence: (P.M.-A.); (M.M.D.); Tel.: +55-31-99817-5004 (P.M.-A.); +55-31-99222-2761 (M.M.D.)
| | - Mariana Martins Drumond
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de—Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (F.A.L.B.); (L.C.L.d.J.); (C.P.d.C.); (V.L.B.); (V.A.)
- Centro Federal de Educação Tecnológica de Minas Gerais (CEFET/MG), Departamento de Ciências Biológicas, Belo Horizonte 31421-169, Brazil
- Correspondence: (P.M.-A.); (M.M.D.); Tel.: +55-31-99817-5004 (P.M.-A.); +55-31-99222-2761 (M.M.D.)
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3
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Messe R, Barrera C, Gondouin A, Dalphin JC. [Hot tub lung: A retrospective analysis of 14 cases]. Rev Mal Respir 2020; 38:13-21. [PMID: 33303349 DOI: 10.1016/j.rmr.2020.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 09/16/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Hot tub lung (HTL) is a hypersensitivity pneumonitis (HP) related to inhalation of non-tuberculous mycobacteria (NTM) when exposed to ejected jet droplets from a jacuzzi. The aetiological debate is not completely settled in the literature. METHOD An observational study of 14 cases of HTL, diagnosed at the University Hospital of Besançon, France, between 2004 and 2018 according to the diagnostic criteria used in the clinic. RESULTS This cohort corresponds to type I HP (inflammatory), with one case of type II HP. Decrease of lung transfer for carbon monoxide was present in 86% of examinations (n=12/14). In total, 84% of bronchoalveolar lavages showed a lymphocytic cellular pattern≥30% (n=11/13). The environmental survey enabled the identification of NTM in 93% of cases (n=13/14), mainly Mycobacterium avium. Serum precipitins directed against NTM were found in 10% of the cases (n=2/20). Three cases received corticosteroid therapy and none received antibiotics. Antigenic eviction has improved the symptomatology in all cases. CONCLUSIONS Our cohort supports the hypothesis that HTL is predominantly a type I HP. Avoidance of the agent involved (NTM) is necessary. The diagnosis is difficult because serum precipitins against NTM are not easily demonstrable. An environmental survey could facilitate the identification of the NTM. Prevention of HTL depends on education of the clinician and the patient.
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Affiliation(s)
- R Messe
- Pôle cœur-poumon, service de pneumologie, CHU de Jean-Minjoz, Besançon, France; Service de pneumologie, hôpitaux universitaires de Genève, Genève, Suisse.
| | - C Barrera
- Pôle cœur-poumon, service de pneumologie, CHU de Jean-Minjoz, Besançon, France; Laboratoire de parasitologie mycologie, CHU de Jean-Minjoz, Besançon, France
| | - A Gondouin
- Pôle cœur-poumon, service de pneumologie, CHU de Jean-Minjoz, Besançon, France
| | - J-C Dalphin
- Pôle cœur-poumon, service de pneumologie, CHU de Jean-Minjoz, Besançon, France; UMR 6249 chrono-environnement, université de Franche-Comté, Besançon, France
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4
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de Lacerda LB, Rios WM, Masson AP, Brandão IT, Milani TM, Borges MC, Ramalho LNZ, Barbosa MCR, Miyoshi A, Silva CL. Oral administration of Hsp65-producing Lactococcus lactis attenuates allergic asthma in a murine model. J Appl Microbiol 2020; 130:2075-2086. [PMID: 33124086 DOI: 10.1111/jam.14913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 10/09/2020] [Accepted: 10/23/2020] [Indexed: 01/09/2023]
Abstract
AIMS Allergic asthma is a chronic inflammatory lung disease characterized by a Th2-type immune response pattern. The development of nonspecific immunotherapy is one of the primary goals for the control of this disease. METHODS AND RESULTS In this study, we evaluated the therapeutic effects of Lactococcus lactis-producing mycobacterial heat shock protein 65 (LLHsp65) in an ovalbumin (OVA)-induced allergic asthma model. OVA-challenged BALB/c mice were orally administrated with LLHsp65 for 10 consecutive days. The results demonstrate that LLhsp65 attenuates critical features of allergic inflammation, like airway hyperresponsiveness and mucus production. Likewise, the treatment decreases the pulmonary eosinophilia and the serum level of OVA-specific IgE. In addition to deviating immune responses towards Th1-cytokine profile, increase regulatory T cells, and cytokine levels, such as IL-6 and IL-10. CONCLUSIONS Our results reveal that the mucosal immunotherapy of LLHsp65 significantly reduces the overall burden of airway allergic inflammation, suggesting a promising therapeutic strategy for allergic asthma treatment. SIGNIFICANCE AND IMPACT OF THE STUDY This research reveals new perspectives on nonspecific immunotherapy based on the delivery of recombinant proteins by lactic acid bacteria to treat of allergic disorders.
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Affiliation(s)
- L B de Lacerda
- Department of Biochemistry and Immunology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - W M Rios
- Department of Biochemistry and Immunology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - A P Masson
- Department of Biochemistry and Immunology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - I T Brandão
- Department of Biochemistry and Immunology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - T M Milani
- Department of Internal Medicine, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - M C Borges
- Department of Internal Medicine, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - L N Z Ramalho
- Department of Pathology Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - M C R Barbosa
- Department of Biochemistry and Immunology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - A Miyoshi
- Department of Ecology, Genetics and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - C L Silva
- Department of Biochemistry and Immunology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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5
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Pagani TD, Guimarães ACR, Waghabi MC, Corrêa PR, Kalume DE, Berrêdo-Pinho M, Degrave WM, Mendonça-Lima L. Exploring the Potential Role of Moonlighting Function of the Surface-Associated Proteins From Mycobacterium bovis BCG Moreau and Pasteur by Comparative Proteomic. Front Immunol 2019; 10:716. [PMID: 31080447 PMCID: PMC6497762 DOI: 10.3389/fimmu.2019.00716] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 03/18/2019] [Indexed: 12/14/2022] Open
Abstract
Surface-associated proteins from Mycobacterium bovis BCG Moreau RDJ are important components of the live Brazilian vaccine against tuberculosis. They are important targets during initial BCG vaccine stimulation and modulation of the host's immune response, especially in the bacterial-host interaction. These proteins might also be involved in cellular communication, chemical response to the environment, pathogenesis processes through mobility, colonization, and adherence to the host cell, therefore performing multiple functions. In this study, the proteomic profile of the surface-associated proteins from M. bovis BCG Moreau was compared to the BCG Pasteur reference strain. The methodology used was 2DE gel electrophoresis combined with mass spectrometry techniques (MALDI-TOF/TOF), leading to the identification of 115 proteins. Of these, 24 proteins showed differential expression between the two BCG strains. Furthermore, 27 proteins previously described as displaying moonlighting function were identified, 8 of these proteins showed variation in abundance comparing BCG Moreau to Pasteur and 2 of them presented two different domain hits. Moonlighting proteins are multifunctional proteins in which two or more biological functions are fulfilled by a single polypeptide chain. Therefore, the identification of such proteins with moonlighting predicted functions can contribute to a better understanding of the molecular mechanisms unleashed by live BCG Moreau RDJ vaccine components.
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Affiliation(s)
- Talita Duarte Pagani
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Ana Carolina R Guimarães
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Mariana C Waghabi
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Paloma Rezende Corrêa
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Dário Eluan Kalume
- Laboratório Interdisciplinar de Pesquisas Médicas, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz-FIOCRUZ, Rio de Janeiro, Brazil.,Unidade de Espectrometria de Massas e Proteômica, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcia Berrêdo-Pinho
- Laboratório de Microbiologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Wim Maurits Degrave
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Leila Mendonça-Lima
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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Heat Shock Proteins as Immunomodulants. Molecules 2018; 23:molecules23112846. [PMID: 30388847 PMCID: PMC6278532 DOI: 10.3390/molecules23112846] [Citation(s) in RCA: 217] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 10/30/2018] [Accepted: 10/30/2018] [Indexed: 12/24/2022] Open
Abstract
Heat shock proteins (Hsps) are conserved molecules whose main role is to facilitate folding of other proteins. Most Hsps are generally stress-inducible as they play a particularly important cytoprotective role in cells exposed to stressful conditions. Initially, Hsps were generally thought to occur intracellulary. However, recent work has shown that some Hsps are secreted to the cell exterior particularly in response to stress. For this reason, they are generally regarded as danger signaling biomarkers. In this way, they prompt the immune system to react to prevailing adverse cellular conditions. For example, their enhanced secretion by cancer cells facilitate targeting of these cells by natural killer cells. Notably, Hsps are implicated in both pro-inflammatory and anti-inflammatory responses. Their effects on immune cells depends on a number of aspects such as concentration of the respective Hsp species. In addition, various Hsp species exert unique effects on immune cells. Because of their conservation, Hsps are implicated in auto-immune diseases. Here we discuss the various metabolic pathways in which various Hsps manifest immune modulation. In addition, we discuss possible experimental variations that may account for contradictory reports on the immunomodulatory function of some Hsps.
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7
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Savin Z, Kivity S, Yonath H, Yehuda S. Smoking and the intestinal microbiome. Arch Microbiol 2018; 200:677-684. [DOI: 10.1007/s00203-018-1506-2] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 03/07/2018] [Accepted: 03/23/2018] [Indexed: 12/21/2022]
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8
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Roberts G, Boyle R, Bryce PJ, Crane J, Hogan SP, Saglani S, Wickman M, Woodfolk JA. Developments in the field of allergy mechanisms in 2015 through the eyes of Clinical & Experimental Allergy. Clin Exp Allergy 2017; 46:1248-57. [PMID: 27682977 DOI: 10.1111/cea.12823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
In the first of two papers we described the development in the field of allergy mechanisms as described by Clinical and Experimental Allergy in 2015. Experimental models of allergic disease, basic mechanisms, clinical mechanisms and allergens are all covered. A second paper will cover clinical aspects.
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Affiliation(s)
- G Roberts
- Clinical and Experimental Sciences and Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK. .,NIHR Southampton Respiratory Biomedical Research Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK. .,The David Hide Asthma and Allergy Research Centre, St Mary's Hospital, Isle of Wight, UK.
| | - R Boyle
- Paediatric Research Unit, Imperial College London, London, UK
| | - P J Bryce
- Division of Allergy-Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - J Crane
- Department of Medicine, University of Otago Wellington, Wellington, New Zealand
| | - S P Hogan
- Division of Allergy and Immunology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - S Saglani
- National Heart & Lung Institute, Imperial College London, London, UK
| | - M Wickman
- Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
| | - J A Woodfolk
- Allergy Division, Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA, USA
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9
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James PL, Cannon J, Barber CM, Crawford L, Hughes H, Jones M, Szram J, Cowman S, Cookson WOC, Moffatt MF, Cullinan P. Metal worker's lung: spatial association with Mycobacterium avium. Thorax 2017; 73:151-156. [PMID: 28851756 PMCID: PMC5801647 DOI: 10.1136/thoraxjnl-2017-210226] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 07/06/2017] [Accepted: 07/17/2017] [Indexed: 11/03/2022]
Abstract
BACKGROUND Outbreaks of hypersensitivity pneumonitis (HP) are not uncommon in workplaces where metal working fluid (MWF) is used to facilitate metal turning. Inhalation of microbe-contaminated MWF has been assumed to be the cause, but previous investigations have failed to establish a spatial relationship between a contaminated source and an outbreak. OBJECTIVES After an outbreak of five cases of HP in a UK factory, we carried out blinded, molecular-based microbiological investigation of MWF samples in order to identify potential links between specific microbial taxa and machines in the outbreak zone. METHODS Custom-quantitative PCR assays, microscopy and phylogenetic analyses were performed on blinded MWF samples to quantify microbial burden and identify potential aetiological agents of HP in metal workers. MEASUREMENTS AND MAIN RESULTS MWF from machines fed by a central sump, but not those with an isolated supply, was contaminated by mycobacteria. The factory sump and a single linked machine at the centre of the outbreak zone, known to be the workstation of the index cases, had very high levels of detectable organisms. Phylogenetic placement of mycobacterial taxonomic marker genes generated from these samples indicated that the contaminating organisms were closely related to Mycobacterium avium. CONCLUSIONS We describe, for the first time, a close spatial relationship between the abundance of a mycobacterium-like organism, most probably M. avium, and a localised outbreak of MWF-associated HP. The further development of sequence-based analytic techniques should assist in the prevention of this important occupational disease.
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Affiliation(s)
- Phillip L James
- Faculty of Medicine, National Heart and Lung Institute, Imperial College, London, UK.,Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | - Julie Cannon
- Royal Brompton and Harefield NHS Foundation Trust, London, UK.,Department of Occupational and Environmental Medicine, Royal Brompton Hospital and Imperial College (NHLI), London, UK
| | | | | | | | - Meinir Jones
- Department of Occupational and Environmental Medicine, Royal Brompton Hospital and Imperial College (NHLI), London, UK
| | - Joanna Szram
- Royal Brompton and Harefield NHS Foundation Trust, London, UK.,Department of Occupational and Environmental Medicine, Royal Brompton Hospital and Imperial College (NHLI), London, UK
| | - Steven Cowman
- Faculty of Medicine, National Heart and Lung Institute, Imperial College, London, UK.,Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | - William O C Cookson
- Faculty of Medicine, National Heart and Lung Institute, Imperial College, London, UK
| | - Miriam F Moffatt
- Faculty of Medicine, National Heart and Lung Institute, Imperial College, London, UK
| | - Paul Cullinan
- Royal Brompton and Harefield NHS Foundation Trust, London, UK.,Department of Occupational and Environmental Medicine, Royal Brompton Hospital and Imperial College (NHLI), London, UK.,MRC-PHE Centre for Environment and Health, St Mary's Campus, Imperial College, London, UK
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10
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Gelfand EW, Joetham A, Wang M, Takeda K, Schedel M. Spectrum of T-lymphocyte activities regulating allergic lung inflammation. Immunol Rev 2017; 278:63-86. [PMID: 28658551 PMCID: PMC5501488 DOI: 10.1111/imr.12561] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Despite advances in the treatment of asthma, optimization of symptom control remains an unmet need in many patients. These patients, labeled severe asthma, are responsible for a substantial fraction of the disease burden. In these patients, research is needed to define the cellular and molecular pathways contributing to disease which in large part are refractory to corticosteroid treatment. The causes of steroid-resistant asthma are multifactorial and result from complex interactions of genetics, environmental factors, and innate and adaptive immunity. Adaptive immunity, addressed here, integrates the activities of distinct T-cell subsets and by definition is dynamic and responsive to an ever-changing environment and the influences of epigenetic modifications. These T-cell subsets exhibit different susceptibilities to the actions of corticosteroids and, in some, corticosteroids enhance their functional activation. Moreover, these subsets are not fixed in lineage differentiation but can undergo transcriptional reprogramming in a bidirectional manner between protective and pathogenic effector states. Together, these factors contribute to asthma heterogeneity between patients but also in the same patient at different stages of their disease. Only by carefully defining mechanistic pathways, delineating their sensitivity to corticosteroids, and determining the balance between regulatory and effector pathways will precision medicine become a reality with selective and effective application of targeted therapies.
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Affiliation(s)
- Erwin W Gelfand
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO, USA
| | - Anthony Joetham
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO, USA
| | - Meiqin Wang
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO, USA
| | - Katsuyuki Takeda
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO, USA
| | - Michaela Schedel
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO, USA
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Prado RQ, Bertolini TB, Piñeros AR, Gembre AF, Ramos SG, Silva CL, Borges MC, Bonato VLD. Attenuation of experimental asthma by mycobacterial protein combined with CpG requires a TLR9-dependent IFN-γ-CCR2 signalling circuit. Clin Exp Allergy 2016; 45:1459-71. [PMID: 25944185 DOI: 10.1111/cea.12564] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 02/19/2015] [Accepted: 03/25/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND Allergic asthma is a chronic pulmonary disease characterized by a Th2 inflammatory response. The modulation of a Th2 immune response based on immune deviation to a Th1 pattern or induction and migration of regulatory T cells to the lungs constitutes one of the major therapeutic approaches that is being investigated for the treatment of allergic asthma. The potentials of Mycobacterium leprae 65-kD heat-shock protein or Toll-like receptor 9 ligand (CpG oligodeoxynucleotides) as immune modulators for the treatment of airway allergic disease have been studied individually. OBJECTIVE Mycobacterial protein combined with CpG was used as immunotherapy for airway allergy. METHODS Using an ovalbumin-induced asthma model, mice were sensitized and challenged, and then treated with mycobacterial heat-shock protein (Hsp65) combined with CpG. RESULTS The treatment of mice with established allergy led to the attenuation of eosinophilia, Th2 cytokines and airway hyperresponsiveness. Hsp65 plus CpG treatment also induced an increase in OVA-specific IFN-γ levels and in the frequency of lung inflammatory monocytes. Moreover, we show that the reduction of eosinophilia and the recruitment of inflammatory monocytes to the lungs required early triggering of TLR9, IFN-γ and CCR2 by immunotherapy components. CONCLUSION In addition to immune deviation to a Th1 response in the modulation of Th2 allergic inflammation, our findings also attribute an important role to the innate response mediated by TLR9, associated with the recruitment of CCR2-dependent monocytes. CLINICAL RELEVANCE Our findings show that the Hsp65/CpG treatment is a promising strategy for consideration in translational studies.
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Affiliation(s)
- R Q Prado
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - T B Bertolini
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - A R Piñeros
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - A F Gembre
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - S G Ramos
- Department of Pathology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - C L Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - M C Borges
- Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - V L D Bonato
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
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12
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Abstract
We are rapidly returning to a world in which bacterial infections are a major health issue. Pathogenic bacteria are able to colonize and cause pathology due to the possession of virulence factors such as adhesins, invasins, evasins and toxins. These are generally specifically evolved proteins with selective actions. It is, therefore, surprising that most human bacterial pathogens employ moonlighting proteins as virulence factors. Currently, >90 bacterial species employ one or more moonlighting protein families to aid colonization and induce disease. These organisms employ 90 moonlighting bacterial protein families and these include enzymes of the glycolytic pathway, tricarboxylic acid (TCA) cycle, hexosemonophosphate shunt, glyoxylate cycle and a range of other metabolic enzymes, proteases, transporters and, also, molecular chaperones and protein-folding catalysts. These proteins have homologues in eukaryotes and only a proportion of the moonlighting proteins employed are solely bacterial in origin. Bacterial moonlighting proteins can be divided into those with single moonlighting functions and those with multiple additional biological actions. These proteins contribute significantly to the population of virulence factors employed by bacteria and some are obvious therapeutic targets. Where examined, bacterial moonlighting proteins bind to target ligands with high affinity. A major puzzle is the evolutionary mechanism(s) responsible for bacterial protein moonlighting and a growing number of highly homologous bacterial moonlighting proteins exhibit widely different moonlighting actions, suggesting a lack in our understanding of the mechanism of evolution of protein active sites.
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13
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Hu Y, Coates AR, Liu A, Lund PA, Henderson B. Identification of the monocyte activating motif in Mycobacterium tuberculosis chaperonin 60.1. Tuberculosis (Edinb) 2013; 93:442-7. [DOI: 10.1016/j.tube.2013.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 03/27/2013] [Accepted: 04/03/2013] [Indexed: 10/26/2022]
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Henderson B, Fares MA, Lund PA. Chaperonin 60: a paradoxical, evolutionarily conserved protein family with multiple moonlighting functions. Biol Rev Camb Philos Soc 2013; 88:955-87. [DOI: 10.1111/brv.12037] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Revised: 02/20/2013] [Accepted: 03/04/2013] [Indexed: 02/07/2023]
Affiliation(s)
- Brian Henderson
- Department of Microbial Diseases, UCL-Eastman Dental Institute; University College London; London WC1X 8LD U.K
| | - Mario A. Fares
- Department of Genetics; University of Dublin, Trinity College Dublin; Dublin 2 Ireland
- Department of Abiotic Stress; Instituto de Biologia Molecular y Celular de Plantas, Consejo Superior de Investigaciones Cientificas (CSIC-UPV); Valencia 46022 Spain
| | - Peter A. Lund
- School of Biosciences; University of Birmingham; Birmingham B15 2TT U.K
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15
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Shin YS, Takeda K, Shiraishi Y, Jeong YY, Domenico J, Jia Y, Han J, Spallek R, Singh M, Lucas JJ, Gelfand EW. Microbial heat shock protein 65 attenuates airway hyperresponsiveness and inflammation by modulating the function of dendritic cells. THE JOURNAL OF IMMUNOLOGY 2012; 189:3404-10. [PMID: 22933632 DOI: 10.4049/jimmunol.1201138] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Heat shock proteins (HSPs), produced in response to stress, are suppressive in disease models. We previously showed that Mycobacterium leprae HSP65 prevented development of airway hyperresponsiveness and inflammation in mice. Our goal in this study was to define the mechanism responsible for the suppressive effects of HSP. In one in vivo approach, BALB/c mice were sensitized to OVA, followed by primary OVA challenges. Several weeks later, HSP65 was administered prior to a single, provocative secondary challenge. In a second in vivo approach, the secondary challenge was replaced by intratracheal instillation of allergen-pulsed bone marrow-derived dendritic cells (BMDCs). The in vitro effects of HSP65 on BMDCs were examined in coculture experiments with CD4(+) T cells. In vivo, HSP65 prevented the development of airway hyperresponsiveness and inflammation. Additionally, Th1 cytokine levels in bronchoalveolar lavage fluid were increased. In vitro, HSP65 induced Notch receptor ligand Delta1 expression on BMDCs, and HSP65-treated BMDCs skewed CD4(+) T cells to Th1 cytokine production. Thus, HSP65-induced effects on allergen-induced airway hyperresponsiveness and inflammation were associated with increased Delta1 expression on dendritic cells, modulation of dendritic cell function, and CD4(+) Th1 cytokine production.
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Affiliation(s)
- Yoo Seob Shin
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA
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16
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Tomasello G, Bellavia M, Damiano G, Gioviale MC, Lo Monte AI. Possible relation between gut microflora composition and oncogenic risk. ACTA ACUST UNITED AC 2012. [DOI: 10.1097/mrm.0b013e328353f49c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Aalberse JA, Prakken BJ, Kapitein B. HSP: Bystander Antigen in Atopic Diseases? Front Immunol 2012; 3:139. [PMID: 22666223 PMCID: PMC3364480 DOI: 10.3389/fimmu.2012.00139] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Accepted: 05/14/2012] [Indexed: 12/22/2022] Open
Abstract
Over the last years insight in the complex interactions between innate and adaptive immunity in the regulation of an inflammatory response has increased enormously. This has revived the interest in stress proteins; proteins that are expressed during cell stress. As these proteins can attract and trigger an immunological response they can act as important mediators in this interaction. In this respect, of special interest are proteins that may act as modulators of both innate and adaptive immunity. Heat shock proteins (HSPs) are stress proteins that have these, and more, characteristics. More than two decades of studies on HSPs has revealed that they are part of intrinsic, “natural” mechanisms that steer inflammation. This has provoked comprehensive explorations of the role of HSPs in various human inflammatory diseases. Most studies have focused on classical autoimmune diseases. This has led to the development of clinical studies with HSPs that have shown promise in Phase II/III clinical trials. Remarkably, only very little is yet known of the role of HSPs in atopic diseases. In allergic disease a number of studies have investigated the possibility that allergen-specific regulatory T cell (Treg) function is defective in individuals with allergic diseases. This raises the question whether methods can be identified to improve the Treg repertoire. Studies from other inflammatory diseases have suggested HSPs may have such a beneficial effect on the T cell repertoire. Based on the immune mechanisms of atopic diseases, in this review we will argue that, as in other human inflammatory conditions, understanding immunity to HSPs is likely also relevant for atopic diseases. Specifically, we will discuss why certain HSPs such as HSP60 connect the immune response to environmental antigens with regulation of the inflammatory response. Thus they provide a molecular link that may eventually even help to better understand the immune pathological basis of the hygiene hypothesis.
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Affiliation(s)
- Joost A Aalberse
- Department of Pediatric Immunology, Center for Molecular and Cellular Intervention, Wilhelmina Children's Hospital, University Medical Center Utrecht, Netherlands
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18
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Klingenberg R, Ketelhuth DF, Strodthoff D, Gregori S, Hansson GK. Subcutaneous immunization with heat shock protein-65 reduces atherosclerosis in Apoe−/− mice. Immunobiology 2012; 217:540-7. [DOI: 10.1016/j.imbio.2011.06.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Accepted: 06/19/2011] [Indexed: 10/18/2022]
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19
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Changchun H, Haijin Z, Wenjun L, Zhenyu L, Dan Z, Laiyu L, Wancheng T, Shao-xi C, Fei Z. Increased heat shock protein 70 levels in induced sputum and plasma correlate with severity of asthma patients. Cell Stress Chaperones 2011; 16:663-71. [PMID: 21643870 PMCID: PMC3220390 DOI: 10.1007/s12192-011-0271-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Revised: 05/15/2011] [Accepted: 05/18/2011] [Indexed: 11/25/2022] Open
Abstract
Damage-associated molecular pattern molecules such as high-mobility group box 1 protein (HMGB1) and heat shock protein 70 (HSP70) have been implicated in the pathogenesis of asthma. The aim of our study was to examine the induced sputum and plasma concentrations of HSP70 in asthmatic patients to determine their relationship with airway obstruction. Thirty-four healthy controls and 56 patients with persistent bronchial asthma matched for gender and age were enrolled in this study. Spirometry measurements were performed before sputum induction. HSP70 levels in induced sputum and plasma were measured using the ELISA Kit. Sputum and plasma concentrations of HSP70 in asthmatics patients were significantly higher than that in control subjects (sputum, (0.88 ng/ml (0.27-1.88 ng/ml) versus 0.42 ng/ml (0.18-0.85 ng/ml), p < 0.001); plasma, (0.46 ng/ml (0.20-0.98 ng/ml) versus 0.14 ng/ml (0.11-0.37 ng/ml), p < 0.001) and were significantly negatively correlated with forced expiratory volume in 1 s (FEV1), FEV1 (percent predicted), and FEV1/FVC in all 90 participants and 56 patients with asthma. There were no significant differences in HSP70 levels between patients with eosinophilic and non-eosinophilic asthma. HSP70 levels in plasma were positively correlated with neutrophil count, and HSP70 levels in induced sputum were positively correlated with lymphocyte count. In multivariate analysis, independent predictors of sputum HSP70 were diseases and disease severity but not smoking, age, or gender, and independent predictors of plasma HSP70 were also diseases and disease severity. In conclusion, this study indicates that induced sputum and plasma HSP70 could serve as a useful marker for assessing the degree of airway obstruction in patients with asthma. However, further investigation is needed to establish the role of circulating and sputum HSP70 in the pathogenesis of asthma.
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Affiliation(s)
- Hou Changchun
- Department of Respiration, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
- Department of Internal Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021 China
| | - Zhao Haijin
- Department of Respiration, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Li Wenjun
- School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, 510515 China
| | - Liang Zhenyu
- Department of Respiration, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Zhang Dan
- Department of Respiration, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Liu Laiyu
- Department of Respiration, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Tong Wancheng
- Department of Respiration, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Cai Shao-xi
- Department of Respiration, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Zou Fei
- School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, 510515 China
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20
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Ohue R, Hashimoto K, Nakamoto M, Furukawa Y, Masuda T, Kitabatake N, Tani F. Bacterial heat shock protein 60, GroEL, can induce the conversion of naïve T cells into a CD4 CD25(+) Foxp3-expressing phenotype. J Innate Immun 2011; 3:605-13. [PMID: 21893964 DOI: 10.1159/000330786] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Accepted: 07/13/2011] [Indexed: 12/21/2022] Open
Abstract
Recent publications report that heat shock proteins (HSPs) can endow regulatory responses to the systemic immune system when administered via the mucosal route, leading to an amelioration of atherosclerosis and allergy. However, it remains poorly understood if HSP antigens exist in the luminal contents of the gastrointestinal tract and which types of HSP induce regulatory responses. Here we addressed these problems, considering that numerous gut microflora and foods are natural sources of HSPs. SDS-PAGE and immunoblotting with the anti-HSP60 antibody demonstrated the intact and degraded forms of HSP60 mainly in appendix and large intestine of the gastrointestinal tract. No reactivity with this antibody was observed for any of the luminal contents derived from germ-free animals, suggesting gut microflora to be a source of the intestinal HSPs because of lack of HSPs in animal chow diet. GroEL, a typical member of bacterial HSP60, showed a tendency to stimulate splenocytes in germ-free mice, compared to that in conventional mice, suggesting that resident commensal bacterial GroEL may stimulate HSP-reactive T cells as regulatory cells in conventional animals. Importantly, GroEL, but not mouse-derived HSP60, caused naïve T cells to differentiate into CD4(+) CD25(+) Foxp3(+) T cells, indicating that the production of regulatory T cells depends on the type of HSP. Thus, HSPs derived from commensal microbes can be utilized to stimulate immunoregulatory pathways for the maintenance of intestinal homeostasis.
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Affiliation(s)
- Ryuji Ohue
- Laboratory of Food Environmental Science, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
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21
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Fonseca DM, Wowk PF, Paula MO, Campos LW, Gembre AF, Turato WM, Ramos SG, Dias-Baruffi M, Barboza R, Gomes E, Silva CL, Russo M, Bonato VLD. Recombinant DNA immunotherapy ameliorate established airway allergy in a IL-10 dependent pathway. Clin Exp Allergy 2011; 42:131-43. [DOI: 10.1111/j.1365-2222.2011.03845.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Revised: 06/07/2011] [Accepted: 07/01/2011] [Indexed: 01/02/2023]
Affiliation(s)
- D. M. Fonseca
- Department of Biochemistry and Immunology; School of Medicine of Ribeirão Preto; University of São Paulo; Riberão Preto; Brazil
| | - P. F. Wowk
- Department of Biochemistry and Immunology; School of Medicine of Ribeirão Preto; University of São Paulo; Riberão Preto; Brazil
| | - M. O. Paula
- Department of Biochemistry and Immunology; School of Medicine of Ribeirão Preto; University of São Paulo; Riberão Preto; Brazil
| | - L. W. Campos
- Department of Biochemistry and Immunology; School of Medicine of Ribeirão Preto; University of São Paulo; Riberão Preto; Brazil
| | - A. F. Gembre
- Department of Biochemistry and Immunology; School of Medicine of Ribeirão Preto; University of São Paulo; Riberão Preto; Brazil
| | - W. M. Turato
- Department of Biochemistry and Immunology; School of Medicine of Ribeirão Preto; University of São Paulo; Riberão Preto; Brazil
| | - S. G. Ramos
- Department of Pathology; School of Medicine of Ribeirão Preto; University of São Paulo; Riberão Preto; Brazil
| | - M. Dias-Baruffi
- Department of Clinical, Toxicological, Bromatological Analyses; School of Pharmaceutical Sciences of Ribeirão Preto; University of São Paulo; Riberão Preto; Brazil
| | - R. Barboza
- Department of Immunology; Institute of Biomedical Sciences; University of São Paulo; Riberão Preto; Brazil
| | - E. Gomes
- Department of Immunology; Institute of Biomedical Sciences; University of São Paulo; Riberão Preto; Brazil
| | - C. L. Silva
- Department of Biochemistry and Immunology; School of Medicine of Ribeirão Preto; University of São Paulo; Riberão Preto; Brazil
| | - M. Russo
- Department of Immunology; Institute of Biomedical Sciences; University of São Paulo; Riberão Preto; Brazil
| | - V. L. D. Bonato
- Department of Biochemistry and Immunology; School of Medicine of Ribeirão Preto; University of São Paulo; Riberão Preto; Brazil
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22
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Bacterial virulence in the moonlight: multitasking bacterial moonlighting proteins are virulence determinants in infectious disease. Infect Immun 2011; 79:3476-91. [PMID: 21646455 DOI: 10.1128/iai.00179-11] [Citation(s) in RCA: 347] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Men may not be able to multitask, but it is emerging that proteins can. This capacity of proteins to exhibit more than one function is termed protein moonlighting, and, surprisingly, many highly conserved proteins involved in metabolic regulation or the cell stress response have a range of additional biological actions which are involved in bacterial virulence. This review highlights the multiple roles exhibited by a range of bacterial proteins, such as glycolytic and other metabolic enzymes and molecular chaperones, and the role that such moonlighting activity plays in the virulence characteristics of a number of important human pathogens, including Staphylococcus aureus, Streptococcus pyogenes, Streptococcus pneumoniae, Helicobacter pylori, and Mycobacterium tuberculosis.
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23
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Henderson B, Martin A. Bacterial Moonlighting Proteins and Bacterial Virulence. Curr Top Microbiol Immunol 2011; 358:155-213. [DOI: 10.1007/82_2011_188] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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24
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Henderson B, Pockley AG. Molecular chaperones and protein-folding catalysts as intercellular signaling regulators in immunity and inflammation. J Leukoc Biol 2010; 88:445-62. [PMID: 20445014 DOI: 10.1189/jlb.1209779] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
This review critically examines the hypothesis that molecular chaperones and protein-folding catalysts from prokaryotes and eukaryotes can be secreted by cells and function as intercellular signals, principally but not exclusively, for leukocytes. A growing number of molecular chaperones have been reported to function as ligands for selected receptors and/or receptors for specific ligands. Molecular chaperones initially appeared to act primarily as stimulatory signals for leukocytes and thus, were seen as proinflammatory mediators. However, evidence is now emerging that molecular chaperones can have anti-inflammatory actions or, depending on the protein and concentration, anti- and proinflammatory functions. Recasting the original hypothesis, we propose that molecular chaperones and protein-folding catalysts are "moonlighting" proteins that function as homeostatic immune regulators but may also under certain circumstances, contribute to tissue pathology. One of the key issues in the field of molecular chaperone biology relates to the role of microbial contaminants in their signaling activity; this too will be evaluated critically. The most fascinating aspect of molecular chaperones probably relates to evidence for their therapeutic potential in human disease, and ongoing studies are evaluating this potential in a range of clinical settings.
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Affiliation(s)
- Brian Henderson
- Department of Microbial Diseases, UCL-Eastman Dental Institute, University College London, 256 Gray's Inn Rd., London, WC1X 8LD, UK.
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25
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Multiple moonlighting functions of mycobacterial molecular chaperones. Tuberculosis (Edinb) 2010; 90:119-24. [PMID: 20338810 DOI: 10.1016/j.tube.2010.01.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 01/14/2010] [Accepted: 01/26/2010] [Indexed: 10/19/2022]
Abstract
Molecular chaperones and protein folding catalysts are normally thought of as intracellular proteins involved in protein folding quality control. However, in the mycobacteria there is increasing evidence to support the hypothesis that molecular chaperones are also secreted intercellular signalling molecules or can control actions at the cell wall or indeed control the composition of the cell wall. The most recent evidence for protein moonlighting in the mycobacteria is the report that chaperonin 60.2 of Mycobacterium tuberculosis is important in the key event in tuberculosis - the entry of the bacterium into the macrophage. This brief overview highlights the potential importance of the moonlighting functions of molecular chaperones in the biology and pathobiology of the mycobacteria.
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26
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Henderson B, Calderwood SK, Coates ARM, Cohen I, van Eden W, Lehner T, Pockley AG. Caught with their PAMPs down? The extracellular signalling actions of molecular chaperones are not due to microbial contaminants. Cell Stress Chaperones 2010; 15:123-41. [PMID: 19731087 PMCID: PMC2866984 DOI: 10.1007/s12192-009-0137-6] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2009] [Revised: 07/15/2009] [Accepted: 07/31/2009] [Indexed: 12/25/2022] Open
Abstract
In recent years, it has been hypothesised that a new signalling system may exist in vertebrates in which secreted molecular chaperones form a dynamic continuum between the cellular stress response and corresponding homeostatic physiological mechanisms. This hypothesis seems to be supported by the finding that many molecular chaperones are released from cells and act as extracellular signals for a range of cells. However, this nascent field of biological research seems to suffer from an excessive criticism that the biological activities of molecular chaperones are due to undefined components of the microbial expression hosts used to generate recombinant versions of these proteins. In this article, a number of the proponents of the cell signalling actions of molecular chaperones take this criticism head-on. They show that sufficient evidence exists to support fully the hypothesis that molecular chaperones have cell-cell signalling actions that are likely to be part of the homeostatic mechanism of the vertebrate.
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Affiliation(s)
- Brian Henderson
- UCL-Eastman Dental Institute, University College London, UK.
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27
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Henderson B, Henderson S. Unfolding the relationship between secreted molecular chaperones and macrophage activation states. Cell Stress Chaperones 2009; 14:329-41. [PMID: 18958583 PMCID: PMC2728268 DOI: 10.1007/s12192-008-0087-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Revised: 10/01/2008] [Accepted: 10/02/2008] [Indexed: 02/07/2023] Open
Abstract
Over the last 20 years, it has emerged that many molecular chaperones and protein-folding catalysts are secreted from cells and function, somewhat in the manner of cytokines, as pleiotropic signals for a variety of cells, with much attention being focused on the macrophage. During the last decade, it has become clear that macrophages respond to bacterial, protozoal, parasitic and host signals to generate phenotypically distinct states of activation. These activation states have been termed 'classical' and 'alternative' and represent not a simple bifurcation in response to external signals but a range of cellular phenotypes. From an examination of the literature, the hypothesis is propounded that mammalian molecular chaperones are able to induce a wide variety of alternative macrophage activation states, and this may be a system for relating cellular or tissue stress to appropriate macrophage responses to restore homeostatic equilibrium.
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Affiliation(s)
- Brian Henderson
- Division of Microbial Diseases, UCL Eastman Dental Institute, University College London, London, UK.
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28
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Van Hove CL, Maes T, Joos GF, Tournoy KG. Chronic inflammation in asthma: a contest of persistence vs resolution. Allergy 2008; 63:1095-109. [PMID: 18616676 DOI: 10.1111/j.1398-9995.2008.01772.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Recent investigations have highlighted that endogenous anti-inflammatory mediators and immune regulating mechanisms are important for the resolution of inflammatory processes. A disruption of these mechanisms can be causally related not only to the initiation of unnecessary inflammation, but also to the persistence of several chronic inflammatory diseases. In asthma, chronic Th-2 driven eosinophilic inflammation of the airways is one of the central abnormalities. To date, elucidating the role of the different pro-inflammatory mediators involved in orchestrating the inflammatory processes in asthma has been the subject of intense research in both humans and animal models. However, the counter-regulatory mechanisms that co-determine the outcome in the contest of resolution vs persistence of the eosinophilic airway inflammation remain poorly understood. These are currently being investigated in animal models of chronic asthma. Elucidating these mechanisms is of relevance, since it can give rise to a new therapeutic approach in the treatment of chronic airway inflammation in asthmatics. This novel concept of treatment involves the stimulation of endogenous anti-inflammatory pathways, rather than solely antagonising the various pro-inflammatory mediators. Here, we review and discuss the current knowledge about these endogenous anti-inflammatory mediators in clinical and experimental asthma.
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Affiliation(s)
- C L Van Hove
- Department of Respiratory Medicine, Laboratory of Translational Research in Obstructive Pulmonary Diseases, Ghent University, Ghent, Belgium
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29
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Kierstein S, Krytska K, Sharma S, Amrani Y, Salmon M, Panettieri RA, Zangrilli J, Haczku A. Ozone inhalation induces exacerbation of eosinophilic airway inflammation and hyperresponsiveness in allergen-sensitized mice. Allergy 2008; 63:438-46. [PMID: 18315731 DOI: 10.1111/j.1398-9995.2007.01587.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Ozone (O(3)) exposure evokes asthma exacerbations by mechanisms that are poorly understood. We used a murine model to characterize the effects of O(3) on allergic airway inflammation and hyperresponsiveness and to identify factors that might contribute to the O(3)-induced exacerbation of asthma. METHODS BALB/c mice were sensitized and challenged with Aspergillus fumigatus (Af). A group of sensitized and challenged mice was exposed to 3.0 ppm of O(3) for 2 h and studied 12 h later (96 h after Af challenge). Naive mice and mice exposed to O(3) alone were used as controls. Bronchoalveolar lavage (BAL) cellular and cytokine content, lung function [enhanced pause (P(enh))], isometric force generation by tracheal rings and gene and protein expression of Fas and FasL were assessed. Apoptosis of eosinophils was quantified by FACS. RESULTS In sensitized mice allergen challenge induced a significant increase of P(enh) and contractile force in tracheal rings that peaked 24 h after challenge and resolved by 96 h. O(3) inhalation induced an exacerbation of airway hyperresponsiveness accompanied by recurrence of neutrophils and enhancement of eosinophils 96 h after allergen challenge. The combination of allergen and O(3) exposure inhibited Fas and FasL gene and protein expression and eosinophil apoptosis and increased interleukin-5 (IL-5), granulocyte-macrophage-colony stimulating factor (GM-CSF) and G-CSF protein levels. CONCLUSIONS O(3) affects airway responsiveness of allergen-primed airways indirectly by increasing viability of eosinophils and eosinophil-mediated pathological changes.
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Affiliation(s)
- S Kierstein
- Pulmonary, Allergy and Critical Care Division, Department of Medicine, University of Pennsylvania, Philadelphia, PA 19104-3403, USA
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A Mycobacterium tuberculosis mutant lacking the groEL homologue cpn60.1 is viable but fails to induce an inflammatory response in animal models of infection. Infect Immun 2008; 76:1535-46. [PMID: 18227175 DOI: 10.1128/iai.01078-07] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The causative agent of tuberculosis, Mycobacterium tuberculosis, has two chaperonin (Cpn60) proteins and one cochaperonin (Cpn10) protein. We show here that cpn60.2 and cpn10, but not cpn60.1, are essential for cell survival. A mutant lacking Cpn60.1 was indistinguishable from the wild-type organism in plate and broth culture and within murine macrophages, although it showed increased sensitivity to high temperature (55 degrees C). However, infection of mice with the Deltacpn60.1 mutant revealed a major difference from the wild-type organism. In spite of having equal numbers of bacteria in infected sites, the Deltacpn60.1 mutant failed to produce granulomatous inflammation in either mice or guinea pigs. This was associated with reduced cytokine expression in infected animals and macrophages. Cell wall lipid acid composition was not altered in the mutant strain. Thus, it appears that Cpn60.1 is an important agent in the regulation of the cytokine-dependent granulomatous response in M. tuberculosis infection.
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Van Eden W, Wick G, Albani S, Cohen I. Stress, Heat Shock Proteins, and Autoimmunity: How Immune Responses to Heat Shock Proteins Are to Be Used for the Control of Chronic Inflammatory Diseases. Ann N Y Acad Sci 2007; 1113:217-37. [PMID: 17584980 DOI: 10.1196/annals.1391.020] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Especially since the (re-)discovery of T cell subpopulations with specialized regulatory activities, mechanisms of anti-inflammatory T cell regulation are studied very actively and are expected to lead to the development of novel immunotherapeutic approaches, especially in chronic inflammatory diseases. Heat shock proteins (Hsp) are possible targets for regulatory T cells due to their enhanced expression in inflamed (stressed) tissues and the evidence that Hsp induce anti-inflammatory immunoregulatory T cell responses. Initial evidence for an immunoregulatory role of Hsp in chronic inflammation was obtained through analysis of T cell responses in the rat model of adjuvant arthritis and the findings that Hsp immunizations protected against the induction of various forms of autoimmune arthritis in rat and mouse models. Since then, immune reactivity to Hsp was found to result from inflammation in various disease models and human inflammatory conditions, such as rheumatoid arthritis (RA), type 1 diabetes, and atherosclerosis. Now, also in the light of a growing interest in T cell regulation, it is of interest to further explore the mechanisms through which Hsp can be utilized to trigger immunoregulatory pathways, capable of suppressing such a wide and diversified spectrum of inflammatory diseases.
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Affiliation(s)
- Willem Van Eden
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Yalelaan 1, Utrecht University, 3584CL Utrecht, the Netherlands.
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Henderson B, Allan E, Coates ARM. Stress wars: the direct role of host and bacterial molecular chaperones in bacterial infection. Infect Immun 2006; 74:3693-706. [PMID: 16790742 PMCID: PMC1489680 DOI: 10.1128/iai.01882-05] [Citation(s) in RCA: 115] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Affiliation(s)
- Brian Henderson
- Division of Microbial Diseases, UCL Eastman Dental Institute, University College London, 256 Gray's Inn Road, London WC1X, United Kingdom.
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Eden WV. Immunoregulatory T-Cell Response to Heat Shock Proteins and Suppression of Experimental Autoimmunity. Transfus Med Hemother 2005. [DOI: 10.1159/000089129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Koya T, Kodama T, Takeda K, Miyahara N, Yang ES, Taube C, Joetham A, Park JW, Dakhama A, Gelfand EW. Importance of myeloid dendritic cells in persistent airway disease after repeated allergen exposure. Am J Respir Crit Care Med 2005; 173:42-55. [PMID: 16192450 PMCID: PMC2662981 DOI: 10.1164/rccm.200505-783oc] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
RATIONALE There is conflicting information about the development and resolution of airway inflammation and airway hyperresponsiveness (AHR) after repeated airway exposure to allergen in sensitized mice. METHODS Sensitized BALB/c and C57BL/6 mice were exposed to repeated allergen challenge on 3, 7, or 11 occasions. Airway function in response to inhaled methacholine was monitored; bronchoalveolar lavage fluid inflammatory cells were counted; and goblet cell metaplasia, peribronchial fibrosis, and smooth muscle hypertrophy were quantitated on tissue sections. Bone marrow-derived dendritic cells were generated after differentiation of bone marrow cells in the presence of growth factors. RESULTS Sensitization to ovalbumin (OVA) in alum, followed by three airway exposures to OVA, induced lung eosinophilia, goblet cell metaplasia, mild peribronchial fibrosis, and peribronchial smooth muscle hypertrophy; increased levels of interleukin (IL)-4, IL-5, IL-13, granulocyte-macrophage colony-stimulating factor, transforming growth factor-beta(1), eotaxin-1, RANTES (regulated on activation, normal T-cell expressed and secreted), and OVA-specific IgG1 and IgE; and resulted in AHR. After seven airway challenges, development of AHR was markedly decreased as was the production of IL-4, IL-5, and IL-13. Levels of IL-10 in both strains and the level of IL-12 in BALB/c mice increased. After 11 challenges, airway eosinophilia and peribronchial fibrosis further declined and the cytokine and chemokine profiles continued to change. At this time point, the number of myeloid dendritic cells and expression of CD80 and CD86 in lungs were decreased compared with three challenges. After 11 challenges, intratracheal instillation of bone marrow-derived dendritic cells restored AHR and airway eosinophilia. CONCLUSIONS These data suggest that repeated allergen exposure leads to progressive decreases in AHR and allergic inflammation, through decreases in myeloid dendritic cell numbers.
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Affiliation(s)
- Toshiyuki Koya
- National Jewish Medical and Research Center, 1400 Jackson Street, Denver, CO 80206, USA
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Qamra R, Mande SC, Coates ARM, Henderson B. The unusual chaperonins of Mycobacterium tuberculosis. Tuberculosis (Edinb) 2005; 85:385-94. [PMID: 16253564 DOI: 10.1016/j.tube.2005.08.014] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Heat shock proteins (Hsps), also known as molecular chaperones, are a diverse set of proteins that mediate the correct folding, assembly, transport and degradation of other proteins. In addition, Hsps have been shown to play a variety of important roles in immunity, thereby representing prominent antigens in the humoral and cellular immune response. Chaperonins form a sub-group of molecular chaperones that are found in all domains of life. Chaperonins in all bacteria are encoded by the essential groEL and groES genes, also called cpn60 and cpn10 arranged on the bicistronic groESL operon. Interestingly, Mycobacterium tuberculosis contains two copies of the cpn60 genes. The existence of a duplicate set of cpn60 genes in M. tuberculosis, however, has been perplexing. Cpn10 and Cpn60s of M. tuberculosis have been shown to be highly antigenic in nature, eliciting strong B- and T-cell immune responses. Recent work has shown intriguing structural, biochemical and signaling properties of the M. tuberculosis chaperonins. This review details the recent developments in the study of the M. tuberculosis chaperonins.
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Affiliation(s)
- Rohini Qamra
- Centre for DNA Fingerprinting and Diagnostics, ECIL Road, Nacharam, Hyderabad 500 076, India
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van Eden W, van der Zee R, Prakken B. Heat-shock proteins induce T-cell regulation of chronic inflammation. Nat Rev Immunol 2005; 5:318-30. [PMID: 15803151 DOI: 10.1038/nri1593] [Citation(s) in RCA: 390] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Immune responses to certain heat-shock proteins (HSPs) develop in almost all inflammatory diseases; however, the significance of such responses is only now becoming clear. In experimental disease models, HSPs can prevent or arrest inflammatory damage, and in initial clinical trials in patients with chronic inflammatory disease, HSP-derived peptides have been shown to promote the production of anti-inflammatory cytokines, indicating that HSPs have immunoregulatory potential. In this Review, we discuss the unique characteristics of HSPs that endow them with these immunoregulatory qualities.
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Affiliation(s)
- Willem van Eden
- Division of Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584CL Utrecht, The Netherlands.
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Yang M, Wu T, Cheng L, Wang F, Wei Q, Tanguay RM. Plasma antibodies against heat shock protein 70 correlate with the incidence and severity of asthma in a Chinese population. Respir Res 2005; 6:18. [PMID: 15710045 PMCID: PMC549531 DOI: 10.1186/1465-9921-6-18] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2004] [Accepted: 02/14/2005] [Indexed: 11/10/2022] Open
Abstract
Background The heat shock proteins (Hsps) are induced by stresses such as allergic factors and inflammatory responses in bronchi epithelial cells and therefore may be detectable in patients with asthma. However, the etiologic link between anti-Hsps and asthma (its severity and related inflammatory responses such as interleukin-4 and immunoglobulin E) has not been established. We determined whether antibodies against Hsp60 and Hsp70 were present in patients with asthma and evaluated their associations with risk and severity of asthma. Methods We determined the levels of anti-Hsp60 and anti-Hsp70 by immunoblot and their associations with risk and symptom severity of asthma in 95 patients with asthma and 99 matched non-symptomatic controls using multivariate logistic regression analysis. Results Compared to the controls, asthma patients were more likely to have detectable anti-Hsp60 (17.2% vs 5.1%) and anti-Hsp70 (33.7% vs 8.1%) (p ≤ 0.001). In particular, the presence of anti-Hsp70 was associated with a greater than 2 fold risk for asthma (adjusted OR = 2.21; 95% CI = 1.35~3.59). Furthermore, both anti-Hsp60 and anti-Hsp70 levels were positively correlated with symptom severity (p < 0.05) as well as interleukin-4 and immunoglobulin E (p < 0.05). Individuals with antibodies against anti-Hsp60 and anti-Hsp70 were more likely to have a family history of asthma (p < 0.001) and higher plasma concentrations of total immunoglobulin E (p = 0.001) and interleukin-4 (p < 0.05) than those without antibodies. Conclusions These data suggest that anti-Hsp60 and especially anti-Hsp70 correlate with the attacks and severity of asthma. The underlying molecular mechanisms linking antibodies to heat shock proteins and asthma remain to be investigated.
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Affiliation(s)
- Miao Yang
- Institute of Occupational Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tangchun Wu
- Institute of Occupational Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Longxian Cheng
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Feng Wang
- Institute of Occupational Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qingyi Wei
- Institute of Occupational Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Robert M Tanguay
- Laboratory of Cell and Developmental Genetics, Dept Medicine, Faculty of Medicine, Pav. C.E. Marchand, Université Laval, Québec, G1K 7P4, Canada
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Zosky GR, von Garnier C, Stumbles PA, Holt PG, Sly PD, Turner DJ. The pattern of methacholine responsiveness in mice is dependent on antigen challenge dose. Respir Res 2004; 5:15. [PMID: 15385057 PMCID: PMC521690 DOI: 10.1186/1465-9921-5-15] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2004] [Accepted: 09/23/2004] [Indexed: 11/30/2022] Open
Abstract
Background Considerable variation exists in the protocols used to induce hyperresponsiveness in murine models of allergic sensitisation. We examined the effect of varying the number of antigen exposures at challenge on the development of methacholine responsiveness in systemically sensitised mice. Methods BALB/c mice were sensitised with ovalbumin (OVA), challenged with 1, 3 or 6 OVA aerosols. Lung function was measured using low frequency forced oscillations and partitioned into components representing the airways (Raw) and lung parenchyma (tissue damping (G) and tissue elastance (H)). Responsiveness to inhaled methacholine (MCh), inflammatory cell profile and circulating IgE were assessed 24 and 48 hours after challenge. The threshold dose of MCh required to elicit a detectable response (sensitivity) and response to 30 mg.mL-1 (maximal response) were determined for each compartment. Results Sensitivity; All three OVA protocols resulted in an increased sensitivity to MCh in Raw but not in G or H. These responses where present at 24 and 48 hrs, except 1 OVA aerosol in which changes had resolved by 48 hrs. Maximal response; 1 OVA aerosol increased maximal responses in Raw, G and H at 24 hrs, which was gone by 48 hrs. Three OVA aerosols increased responses in H at 48 hrs only. Six OVA challenges caused increases in Raw, G and H at both 24 and 48 hrs. Eosinophils increased with increasing antigen challenges. IgE was elevated by OVA sensitisation but not boosted by OVA aerosol challenge. Conclusions The pattern of eosinophilia, IgE and MCh responsiveness in mice was determined by antigen dose at challenge. In this study, increased sensitivity to MCh was confined to the airways whereas increases in maximal responses occurred in both the airway and parenchymal compartments. The presence of eosinophilia and IgE did not always coincide with increased responsiveness to inhaled MCh. These findings require further systematic study to determine whether different mechanisms underlie airway and parenchymal hyperresponsiveness post antigen challenge.
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Affiliation(s)
- Graeme R Zosky
- Telethon Institute for Child Health Research, West Perth, 6872, Australia
- Centre for Child Health Research, University of Western Australia, Crawley, 6009, Australia
| | - Christophe von Garnier
- Telethon Institute for Child Health Research, West Perth, 6872, Australia
- Centre for Child Health Research, University of Western Australia, Crawley, 6009, Australia
| | - Philip A Stumbles
- Telethon Institute for Child Health Research, West Perth, 6872, Australia
- Centre for Child Health Research, University of Western Australia, Crawley, 6009, Australia
| | - Patrick G Holt
- Telethon Institute for Child Health Research, West Perth, 6872, Australia
- Centre for Child Health Research, University of Western Australia, Crawley, 6009, Australia
| | - Peter D Sly
- Telethon Institute for Child Health Research, West Perth, 6872, Australia
- Centre for Child Health Research, University of Western Australia, Crawley, 6009, Australia
| | - Debra J Turner
- Telethon Institute for Child Health Research, West Perth, 6872, Australia
- Centre for Child Health Research, University of Western Australia, Crawley, 6009, Australia
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Takeda K, Miyahara N, Rha YH, Taube C, Yang ES, Joetham A, Kodama T, Balhorn AM, Dakhama A, Duez C, Evans AJ, Voelker DR, Gelfand EW. Surfactant protein D regulates airway function and allergic inflammation through modulation of macrophage function. Am J Respir Crit Care Med 2003; 168:783-9. [PMID: 12882759 DOI: 10.1164/rccm.200304-548oc] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The lung collectin surfactant protein D (SP-D) is an important component of the innate immune response but is also believed to play a role in other regulatory aspects of immune and inflammatory responses within the lung. The role of SP-D in the development of allergen-induced airway inflammation and hyperresponsiveness (AHR) is not well defined. SP-D levels progressively increased up to 48 hours after allergen challenge of sensitized mice and then subsequently decreased. The levels of SP-D paralleled the development of airway eosinophilia and AHR. To determine if this association was functionally relevant, mice were administered rat SP-D (rSP-D) intratracheally. When given to sensitized mice before challenge, AHR and eosinophilia were reduced by rSP-D in a dose-dependent manner but not by mutant rSP-D. rSP-D administration resulted in increased levels of interleukin (IL)-10, IL-12, and IFN-gamma in bronchoalveolar lavage fluid and reduced goblet cell hyperplasia. Culture of alveolar macrophages together with SP-D and allergen resulted in increased production of IL-10, IL-12, and IFN-gamma. These results indicate that SP-D can (negatively) regulate the development of AHR and airway inflammation after airway challenge of sensitized mice, at least in part, by modulating the function of alveolar macrophages.
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Affiliation(s)
- Katsuyuki Takeda
- Program in Cell Biology, Department of Pediatrics, National Jewish Medical and Research Center, Denver, Colorado, USA
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Abstract
Environmental opportunistic mycobacteria, including Mycobacterium avium, M. terrae, and the new species M. immunogenum, have been implicated in outbreaks of hypersensitivity pneumonitis or respiratory problems in a wide variety of settings. One common feature of the outbreaks has been exposure to aerosols. Aerosols have been generated from metalworking fluid during machining and grinding operations as well as from indoor swimming pools, hot tubs, and water-damaged buildings. Environmental opportunistic mycobacteria are present in drinking water, resistant to disinfection, able to provoke inflammatory reactions, and readily aerosolized. In all outbreaks, the water sources of the aerosols were disinfected. Disinfection may select for the predominance and growth of mycobacteria. Therefore, mycobacteria may be responsible, in part, for many outbreaks of hypersensitivity pneumonitis and other respiratory problems in the workplace and home.
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Affiliation(s)
- Joseph O Falkinham
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA.
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