1
|
Zhang L, Nie X, Luo Z, Wei B, Teng G. The Role of Human Leukocyte Antigen-DR in Regulatory T Cells in Patients with Virus-Induced Acute Exacerbation of Chronic Obstructive Pulmonary Disease. Med Sci Monit 2021; 27:e928051. [PMID: 33651771 PMCID: PMC7936470 DOI: 10.12659/msm.928051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background This study assessed the role of different immune phenotypes of T cells in virus-induced acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Material/Methods The study involved 103 participants, including individuals with virus-induced AECOPD (n=32), non-virus-induced AECOPD (n=31), and stable COPD (n=20) and individuals who were healthy smokers (n=20). The immune phenotypes of T cells in peripheral blood were evaluated via flow cytometry analysis, and the differences were analyzed. Results Patients with virus-induced AECOPD (virus group) had a higher COPD assessment test score on admission than those in the group with non-virus-induced AECOPD (nonvirus group; 25.6±3.8 vs 21.9±4.8, P=0.045). A lower CD4+ human leukocyte antigen-DR (HLA-DR)+ frequency was found in the peripheral blood of the virus group compared with the nonvirus group (2.2 vs 4.2, P=0.015), and the frequency of CD4+ CD25high CD127low HLA-DR+ in CD4+ in the virus group was lower than in the nonvirus group (1.1 vs 3.6, P=0.011). The CD3+, CD4+, CD8+, CD4+ central memory T cell, CD4+ effector memory T cell (Tem), CD4+ end-stage T cell, and CD8+ Tem levels in lymphocytes of peripheral blood were lower in exacerbation groups relative to those in the stable COPD and healthy smoking groups, but similar between exacerbation groups. Similar frequencies and levels of T cells between different stagings of COPD were also identified. Conclusions The expression of HLA-DR on the cell surface of CD4+ regulatory T cells (Tregs) was lower in the peripheral blood of patients with virus-induced AECOPD. The expression of HLA-DR in CD4+ Tregs suggested the effect of respiratory viruses on adaptive immunity of patients with AECOPD to some extent.
Collapse
Affiliation(s)
- Lin Zhang
- Department of Pulmonary and Critical Care Medicine, Xuanwu Hospital Capital Medical University, Beijing, China (mainland)
| | - Xiuhong Nie
- Department of Pulmonary and Critical Care Medicine, Xuanwu Hospital Capital Medical University, Beijing, China (mainland)
| | - Zhiming Luo
- Department of Pulmonary and Critical Care Medicine, Xuanwu Hospital Capital Medical University, Beijing, China (mainland)
| | - Bing Wei
- Department of Pulmonary and Critical Care Medicine, Xuanwu Hospital Capital Medical University, Beijing, China (mainland)
| | - Guojie Teng
- Department of Pulmonary and Critical Care Medicine, Xuanwu Hospital Capital Medical University, Beijing, China (mainland)
| |
Collapse
|
2
|
Wielgat P, Trofimiuk E, Czarnomysy R, Holownia A, Braszko JJ. Sialylation pattern in lung epithelial cell line and Siglecs expression in monocytic THP-1 cells as cellular indicators of cigarette smoke - induced pathology in vitro. Exp Lung Res 2018; 44:167-177. [PMID: 29781747 DOI: 10.1080/01902148.2018.1461959] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
PURPOSE Cellular response to cigarette smoke (CS) involves activation of recognition receptors resulting in changes in immune status, oxidative stress and cell turnover. We investigated the effects of CS on sialic acid-binding immunoglobulin type lectins (Siglecs) expression and their sialylated ligands in human immune and non-immune cells. METHODS Human monocytes (THP-1) and epithelial cells (A549) were cultured in CS-conditioned medium (CSM). Expression of Siglec-8 and Siglec-5/Siglec-14 was analysed in THP-1 cells using flow cytometry. The effects of CS on immune activity was evaluated flow cytometrically in these cells by assessment of phagocytosis and intracellular expression IL-1β and IL-10. Detection and differentiation of sialic acids was analyzed by dot blot, western blot and flow cytometry using plant lectins and antibodies. RESULTS Exposure to CS significantly increased expression of Siglec-8 and Siglec-5/Siglec-14 in THP-1 cells. These changes were accompanied by enhanced intracellular level of IL-1β and IL-10 but reduced phagocytic activity. In THP-1 and A549 cells, the level of α2,3-sialic acids, but not α2,6-sialic acid, was significantly increased when compared to naïve cells. The level of α2,8-sialic acids increased significantly in A549 cells, but not in THP-1 cells, after exposure to CS. CONCLUSION These results show that cellular response to CS involves changes in expression of Siglec receptors and sialylated ligands functionally associated with immunity.
Collapse
Affiliation(s)
- Przemyslaw Wielgat
- a Department of Clinical Pharmacology , Medical University of Bialystok , Bialystok , Poland
| | - Emil Trofimiuk
- a Department of Clinical Pharmacology , Medical University of Bialystok , Bialystok , Poland
| | - Robert Czarnomysy
- b Department of Synthesis and Technology of Drugs , Medical University of Bialystok , Bialystok , Poland
| | - Adam Holownia
- c Department of Pharmacology , Medical University of Bialystok , Bialystok , Poland
| | - Jan J Braszko
- a Department of Clinical Pharmacology , Medical University of Bialystok , Bialystok , Poland
| |
Collapse
|
3
|
Gaido CM, Granland C, Laing IA, Souëf PNL, Thomas WR, Currie AJ, Hales BJ. T-cell responses against rhinovirus species A and C in asthmatic and healthy children. IMMUNITY INFLAMMATION AND DISEASE 2017; 6:143-153. [PMID: 29124902 PMCID: PMC5818445 DOI: 10.1002/iid3.206] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/13/2017] [Accepted: 10/18/2017] [Indexed: 12/28/2022]
Abstract
Background Infections by rhinovirus (RV) species A and C are the most common causes of exacerbations of asthma and a major cause of exacerbations of other acute and chronic respiratory diseases. Infections by both species are prevalent in pre‐school and school‐aged children and, particularly for RV‐C, can cause severe symptoms and a need for hospitalization. While associations between RV infection and asthma are well established, the adaptive immune‐mechanisms by which RV infections influence asthma exacerbations are yet to be defined. Objective The aim of this study was to characterize and compare T‐cell responses between RV‐A and RV‐C and to test the hypothesis that T‐cell responses would differ between asthmatic children and healthy controls. Methods A multi‐parameter flow cytometry assay was used to characterize the in vitro recall T‐cell response against RV‐A and RV‐C in PBMCs from children with acute asthma (n = 22) and controls (n = 26). The responses were induced by pools of peptides containing species‐specific VP1 epitopes of RV‐A and RV‐C. Results Regardless of children's clinical status, all children that responded to the in vitro stimulation (>90%) had a similar magnitude of CD4+ T‐cell responses to RV‐A and RV‐C. However, asthmatic children had a significantly lower number of circulating regulatory T cells (Tregs), and healthy controls had significantly more Tregs induced by RV‐A than RV‐C. Conclusions and Clinical Relevance The comparable recall memory T‐cell responses in asthmatic and control children to both RV‐A and RV‐C show that differences in the antibody and inflammatory responses previously described are likely to be due to regulation, with a demonstrated candidate being reduced regulatory T‐cells. The reduced Treg numbers demonstrated here could explain the asthmatic's inability to appropriately control immunopathological responses to RV infections.
Collapse
Affiliation(s)
- Cibele M Gaido
- Telethon Kids Institute, The University of Western Australia, Perth, Australia.,School of Paediatrics and Child Health, The University of Western Australia, Perth, Australia
| | - Caitlyn Granland
- Telethon Kids Institute, The University of Western Australia, Perth, Australia.,School of Paediatrics and Child Health, The University of Western Australia, Perth, Australia
| | - Ingrid A Laing
- Telethon Kids Institute, The University of Western Australia, Perth, Australia.,School of Paediatrics and Child Health, The University of Western Australia, Perth, Australia
| | - Peter N Le Souëf
- School of Paediatrics and Child Health, The University of Western Australia, Perth, Australia.,Princess Margaret Hospital for Children, Perth, Australia
| | - Wayne R Thomas
- Telethon Kids Institute, The University of Western Australia, Perth, Australia
| | - Andrew J Currie
- School of Paediatrics and Child Health, The University of Western Australia, Perth, Australia.,School of Veterinary & Life Sciences, Murdoch University, Perth, Australia
| | - Belinda J Hales
- Telethon Kids Institute, The University of Western Australia, Perth, Australia
| |
Collapse
|
4
|
Beeh KM, Burgel PR, Franssen FME, Lopez-Campos JL, Loukides S, Hurst JR, Fležar M, Ulrik CS, Di Marco F, Stolz D, Valipour A, Casserly B, Ställberg B, Kostikas K, Wedzicha JA. How Do Dual Long-Acting Bronchodilators Prevent Exacerbations of Chronic Obstructive Pulmonary Disease? Am J Respir Crit Care Med 2017; 196:139-149. [PMID: 27922741 DOI: 10.1164/rccm.201609-1794ci] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Decreasing the frequency and severity of exacerbations is one of the main goals of treatment for patients with chronic obstructive pulmonary disease. Several studies have documented that long-acting bronchodilators can reduce exacerbation rate and/or severity, and others have shown that combinations of long-acting β2-adrenergic agonists (LABAs) and long-acting muscarinic antagonists (LAMAs) provide greater reductions in exacerbation frequency than either their monocomponents or LABA/inhaled corticosteroid combinations in patients at low and high risk for these events. In this review, small groups of experts critically evaluated mechanisms potentially responsible for the increased benefit of LABA/LAMA combinations over single long-acting bronchodilators or LABA/inhaled corticosteroids in decreasing exacerbation. These included effects on lung hyperinflation and mechanical stress, inflammation, excessive mucus production with impaired mucociliary clearance, and symptom severity. The data assembled and analyzed by each group were reviewed by all authors and combined into this manuscript. Available clinical results support the possibility that effects of LABA/LAMA combinations on hyperinflation, mucociliary clearance, and symptom severity may all contribute to decreasing exacerbations. Although preclinical studies suggest LABAs and LAMAs have antiinflammatory effects, such effects have not been demonstrated yet in patients with chronic obstructive pulmonary disease.
Collapse
Affiliation(s)
- Kai M Beeh
- 1 insaf Respiratory Research Institute, Wiesbaden, Germany
| | - Pierre-Regis Burgel
- 2 Department of Respiratory Diseases and Adult Cystic Fibrosis Centre, Hôpital Cochin, AP-HP and Paris Descartes University, Paris, France
| | - Frits M E Franssen
- 3 Department of Research and Education, Centre of Expertise for Chronic Organ Failure, Horn, the Netherlands
| | - Jose Luis Lopez-Campos
- 4 Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío, Sevilla, Spain.,5 Centro de Investigación Biomédica en Red de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Stelios Loukides
- 6 2nd Respiratory Medicine Department, National and Kapodistrian University of Athens Medical School, Attiko University Hospital, Athens, Greece
| | - John R Hurst
- 7 University College London Respiratory, University College London, London, United Kingdom
| | - Matjaž Fležar
- 8 University Clinic of Respiratory and Allergic Diseases, Golnik, Slovenia
| | | | - Fabiano Di Marco
- 10 Dipartimento di Scienze della Salute, Università degli Studi di Milano, Ospedale San Paolo, Milan, Italy
| | - Daiana Stolz
- 11 Clinic of Respiratory Medicine and Pulmonary Cell Research, University Hospital Basel, Basel, Switzerland
| | - Arschang Valipour
- 12 Ludwig-Boltzmann-Institute for Chronic Obstructive Pulmonary Disease and Respiratory Epidemiology, Otto-Wagner-Spital, Vienna, Austria
| | - Brian Casserly
- 13 University Hospital, Limerick, Ireland.,14 Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| | - Björn Ställberg
- 15 Department of Public Health and Caring Science, Family Medicine and Preventive Medicine, Uppsala University, Uppsala, Sweden
| | | | - Jadwiga A Wedzicha
- 17 Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| |
Collapse
|