1
|
Unravelling the molecular mechanisms underlying chronic respiratory diseases for the development of novel therapeutics via in vitro experimental models. Eur J Pharmacol 2022; 919:174821. [DOI: 10.1016/j.ejphar.2022.174821] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 02/01/2022] [Accepted: 02/09/2022] [Indexed: 12/11/2022]
|
2
|
Feldman C, Shaddock E. Epidemiology of lower respiratory tract infections in adults. Expert Rev Respir Med 2018; 13:63-77. [DOI: 10.1080/17476348.2019.1555040] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Charles Feldman
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Erica Shaddock
- Division of Pulmonology, Department of Internal Medicine, Charlotte Maxeke Johannesburg Academic Hospital and Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| |
Collapse
|
3
|
Bell TJ, Brand OJ, Morgan DJ, Salek-Ardakani S, Jagger C, Fujimori T, Cholewa L, Tilakaratna V, Östling J, Thomas M, Day AJ, Snelgrove RJ, Hussell T. Defective lung function following influenza virus is due to prolonged, reversible hyaluronan synthesis. Matrix Biol 2018; 80:14-28. [PMID: 29933044 PMCID: PMC6548309 DOI: 10.1016/j.matbio.2018.06.006] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/15/2018] [Accepted: 06/15/2018] [Indexed: 11/16/2022]
Abstract
Little is known about the impact of viral infections on lung matrix despite its important contribution to mechanical stability and structural support. The composition of matrix also indirectly controls inflammation by influencing cell adhesion, migration, survival, proliferation and differentiation. Hyaluronan is a significant component of the lung extracellular matrix and production and degradation must be carefully balanced. We have discovered an imbalance in hyaluronan production following resolution of a severe lung influenza virus infection, driven by hyaluronan synthase 2 from epithelial cells, endothelial cells and fibroblasts. Furthermore hyaluronan is complexed with inter-α-inhibitor heavy chains due to elevated TNF-stimulated gene 6 expression and sequesters CD44-expressing macrophages. We show that intranasal administration of exogenous hyaluronidase is sufficient to release inter-α-inhibitor heavy chains, reduce lung hyaluronan content and restore lung function. Hyaluronidase is already used to facilitate dispersion of co-injected materials in the clinic. It is therefore feasible that fibrotic changes following severe lung infection and inflammation could be overcome by targeting abnormal matrix production. Influenza causes prolonged changes in hyaluronan due to increased synthase activity Influenza induces persistent hyaluronan cross-linking by inter-alpha-inhibitor heavy chains Pockets of persistent hyaluronan are associated with CD44-expressing macrophages Digestion of hyaluronan with intranasal hyaluronidase restores lung function but upon cessation of treatment post-viral complications return
Collapse
Affiliation(s)
- Thomas J Bell
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, UK; Inflammation, Repair and Development, National Heart and Lung Institute, Imperial College London, UK
| | - Oliver J Brand
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, UK
| | - David J Morgan
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, UK
| | - Samira Salek-Ardakani
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, UK
| | - Christopher Jagger
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, UK
| | - Toshifumi Fujimori
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, UK
| | - Lauren Cholewa
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, UK
| | - Viranga Tilakaratna
- Wellcome Trust Centre for Cell-Matrix Research, Division of Cell-Matrix Biology & Regenerative Medicine, School of Biology, Faculty of Biology, Medicine & Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Jörgen Östling
- Respiratory, Inflammation & Autoimmunity IMED, AstraZeneca, Gothenburg, Sweden
| | - Matt Thomas
- Respiratory, Inflammation & Autoimmunity IMED, AstraZeneca, Gothenburg, Sweden
| | - Anthony J Day
- Wellcome Trust Centre for Cell-Matrix Research, Division of Cell-Matrix Biology & Regenerative Medicine, School of Biology, Faculty of Biology, Medicine & Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Robert J Snelgrove
- Inflammation, Repair and Development, National Heart and Lung Institute, Imperial College London, UK
| | - Tracy Hussell
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, UK.
| |
Collapse
|