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Liao SY, Atif SM, Mould K, Konigsberg IR, Fu R, Davidson E, Li L, Fontenot AP, Maier LA, Yang IV. Single-cell RNA sequencing identifies macrophage transcriptional heterogeneities in granulomatous diseases. Eur Respir J 2021; 57:13993003.03794-2020. [PMID: 33602861 DOI: 10.1183/13993003.03794-2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 02/08/2021] [Indexed: 12/25/2022]
Affiliation(s)
- Shu-Yi Liao
- Dept of Medicine, National Jewish Health, Denver, CO, USA
| | - Shaikh M Atif
- Dept of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Kara Mould
- Dept of Medicine, National Jewish Health, Denver, CO, USA
| | - Iain R Konigsberg
- Dept of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Rui Fu
- RNA Biosciences Initiative, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Elizabeth Davidson
- Dept of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Li Li
- Dept of Medicine, National Jewish Health, Denver, CO, USA.,Dept of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Andrew P Fontenot
- Dept of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.,Dept of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Lisa A Maier
- Dept of Medicine, National Jewish Health, Denver, CO, USA.,Dept of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.,Dept of Environmental and Occupational Health, Colorado School of Public Health, Aurora, CO, USA
| | - Ivana V Yang
- Dept of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA .,Dept of Epidemiology, Colorado School of Public Health, Aurora, CO, USA
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Schupp JC, Tchaptchet S, Lützen N, Engelhard P, Müller-Quernheim J, Freudenberg MA, Prasse A. Immune response to Propionibacterium acnes in patients with sarcoidosis--in vivo and in vitro. BMC Pulm Med 2015. [PMID: 26204953 PMCID: PMC4513400 DOI: 10.1186/s12890-015-0070-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Propionibacterium acnes was found in lungs and lymph nodes of patients with sarcoidosis and may induce hypersensitivity type granuloma formation. Data regarding the immune response to P. acnes of European sarcoid patients are scarce. METHODS We assessed the total IgG and IgA amount and specific antibodies to P. acnes and to Staphylococcus aureus, serving as a control, in BAL fluid of 64 patients with sarcoidosis and of 21 healthy volunteers. In a subcohort of sarcoid patients and controls, TNF-α and GM-CSF production of BAL cells stimulated with heat-killed P. acnes were measured. RESULTS In sarcoid patients, the total IgG and IgA levels in BAL fluid were significantly elevated compared to healthy volunteers. IgG and IgA titres against P. acnes and S. aureus were increased in sarcoid patients, yet based on the total amount of antibodies, only antibodies directed against P. acnes were relatively and significantly increased. Furthermore, BAL cells of sarcoid patients produced significantly more TNF-α and GM-CSF upon stimulation with heat-killed P. acnes compared to controls. CONCLUSIONS Patients with sarcoidosis had elevated levels of specific antibodies against P. acnes which suggest contact with this bacterium in the past. Furthermore, BAL cells of sarcoid patients produced inflammatory cytokines (TNF-α and GM-CSF) upon stimulation with P. acnes indicating potential involvement of this pathogen in the pathogenesis of sarcoidosis in some patients.
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Affiliation(s)
- Jonas Christian Schupp
- Department of Pneumology, University Medical Centre, Albert-Ludwigs University, Killianstr. 5, 79106, Freiburg, Germany.
| | - Sandrine Tchaptchet
- Department of Developmental Immunology, Max Planck Institute of Immunobiology und Epigenetics, Freiburg, Germany.
| | - Niklas Lützen
- Department of Pneumology, University Medical Centre, Albert-Ludwigs University, Killianstr. 5, 79106, Freiburg, Germany. .,Department of Radiology, University Medical Centre, Freiburg, Germany.
| | - Peggy Engelhard
- Department of Pneumology, University Medical Centre, Albert-Ludwigs University, Killianstr. 5, 79106, Freiburg, Germany. .,Faculty of Biology, University of Freiburg, Freiburg, Germany.
| | - Joachim Müller-Quernheim
- Department of Pneumology, University Medical Centre, Albert-Ludwigs University, Killianstr. 5, 79106, Freiburg, Germany.
| | - Marina A Freudenberg
- Department of Pneumology, University Medical Centre, Albert-Ludwigs University, Killianstr. 5, 79106, Freiburg, Germany. .,Department of Developmental Immunology, Max Planck Institute of Immunobiology und Epigenetics, Freiburg, Germany.
| | - Antje Prasse
- Department of Pneumology, University Medical Centre, Albert-Ludwigs University, Killianstr. 5, 79106, Freiburg, Germany. .,Department of Pneumology, Medical School, Hannover, Germany.
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Grunewald J, Eklund A, Wahlström J. CD4+ T cells in sarcoidosis: targets and tools. Expert Rev Clin Immunol 2010; 2:877-86. [PMID: 20476976 DOI: 10.1586/1744666x.2.6.877] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Activated pulmonary T-helper type 1 lymphocytes are essential for the inflammatory process in sarcoidosis. Both the T cells and their mediators promoting inflammation may constitute possible targets for immunotherapy. A particular T-cell subset, the T-cell receptor AV2S3(+) CD4(+) T cells, are found at dramatically increased levels in the bronchoalveolar lavage fluid of a subpopulation of sarcoidosis patients with active disease. This particular T-cell subset may be used as a tool to reveal a sarcoidosis-specific antigen. Recent studies of natural killer T cells and T regulatory cells from patients with sarcoidosis have described abnormalities that may be relevant for the inflammatory process in this disease. These findings are exciting news and may be of help for designing new treatment strategies.
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Affiliation(s)
- Johan Grunewald
- Karolinska Institutet/Karolinska University Hospital, Lung Research Laboratory L4:01 Respiratory Medicine Unit, Department of Medicine, 171 76 Stockholm, Sweden.
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Löfdahl JM, Wahlström J, Sköld CM. Different inflammatory cell pattern and macrophage phenotype in chronic obstructive pulmonary disease patients, smokers and non-smokers. Clin Exp Immunol 2006; 145:428-37. [PMID: 16907910 PMCID: PMC1809704 DOI: 10.1111/j.1365-2249.2006.03154.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Smokers exhibit airway inflammation and increased number of alveolar macrophages (AM), but not all develop chronic obstructive pulmonary disease (COPD). We hypothesized that AMs in COPD patients have an altered functional capacity mirrored in a different phenotype. Sixteen steroid-naive COPD patients [forced expiratory volume in 1 s (FEV(1)) < 70% of predicted] underwent bronchoalveolar lavage (BAL). Age- and smoking-matched non-obstructive smokers (n = 10) and healthy non-smokers (n = 9) served as controls. Nine COPD patients had a BAL cell yield sufficient for flow cytometry analysis, where expression of AM cell surface markers reflecting various functions was determined. AMs from COPD patients showed decreased expression of CD86 (co-stimulation) and CD11a (adhesion) compared to smokers' AMs (P < 0.05). Furthermore, smokers' AMs showed lower (P < 0.05) expression of CD11a compared to non-smokers. AM expression of CD11c was higher in the COPD and smokers groups compared to non-smokers (P < 0.05). The expression of CD54 (adhesion) was lower in smokers' AMs compared to non-smokers (P < 0.05), whereas CD16 was lower (P < 0.05) in COPD patients compared to non-smokers. The AM expression of CD11b, CD14, CD58, CD71, CD80 and human leucocyte antigen (HLA) Class II did not differ between the three groups. The AM phenotype is altered in COPD and further research may develop disease markers. The lower AM expression of CD86 and CD11a in COPD implies a reduced antigen-presenting function. Some alterations were found in smokers compared to non-smokers, thus indicating that changes in AM phenotype may be associated with smoking per se. The functional relevance of our findings remains to be elucidated.
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Affiliation(s)
- J M Löfdahl
- Department of Medicine, Division of Respiratory Medicine, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
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Agostini C, Facco M, Chilosi M, Semenzato G. Alveolar macrophage-T cell interactions during Th1-type sarcoid inflammation. Microsc Res Tech 2001; 53:278-87. [PMID: 11340673 DOI: 10.1002/jemt.1094] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Sarcoidosis is an immunomediated, multisystem disorder of unknown cause(s) characterized by a heightened Th1 immune response that leads to an uncontrolled granuloma formation at sites of disease activity. The past few years have seen outstanding advances in the understanding of immunological and molecular events involved in the pathogenesis of this disease. The idea is that several cytokines and chemokines, which are secreted at sites of disease activity, participate in granuloma formation. This paper describes recent data that have clarified some of the events that govern the development of the hypersensitivity reaction during sarcoidosis. In particular, we will review recent evidence indicating that a complex relationship exists between the macrophage/lymphocyte cellular axis and the tissue networks of cytokines.
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Affiliation(s)
- C Agostini
- Department of Clinical and Experimental Medicine, Clinical Immunology Branch, Padua University School of Medicine, Padua, Italy
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