The impact of the immune system on lung injury and regeneration in COPD.
Eur. Respir. J. 62:14 (2023)
COPD is a devastating respiratory condition that manifests via persistent inflammation, emphysema development and small airway remodelling. Lung regeneration is defined as the ability of the lung to repair itself after injury by the proliferation and differentiation of progenitor cell populations, and becomes impaired in the COPD lung as a consequence of cell intrinsic epithelial stem cell defects and signals from the micro-environment. Although the loss of structural integrity and lung regenerative capacity are critical for disease progression, our understanding of the cellular players and molecular pathways that hamper regeneration in COPD remains limited. Intriguingly, despite being a key driver of COPD pathogenesis, the role of the immune system in regulating lung regenerative mechanisms is understudied. In this review, we summarise recent evidence on the contribution of immune cells to lung injury and regeneration. We focus on four main axes: 1) the mechanisms via which myeloid cells cause alveolar degradation; 2) the formation of tertiary lymphoid structures and the production of autoreactive antibodies; 3) the consequences of inefficient apoptotic cell removal; and 4) the effects of innate and adaptive immune cell signalling on alveolar epithelial proliferation and differentiation. We finally provide insight on how recent technological advances in omics technologies and human ex vivo lung models can delineate immune cell-epithelium cross-talk and expedite precision pro-regenerative approaches toward reprogramming the alveolar immune niche to treat COPD.
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Publication type
Article: Journal article
Document type
Scientific Article
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Keywords
Obstructive Pulmonary-disease; Smoke-induced Emphysema; Cell-activating Factor; Macrophage Phagocytic Function; Human Neutrophil Elastase; Cigarette-smoke; Alveolar Macrophages; Apoptotic Neutrophils; Tissue Inhibitor; Growth-factor
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Language
english
Publication Year
2023
Prepublished in Year
0
HGF-reported in Year
2023
ISSN (print) / ISBN
0903-1936
e-ISSN
1399-3003
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Volume: 62,
Issue: 4,
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Article Number: 14
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European Respiratory Society
Publishing Place
Sheffield
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Reviewing status
Peer reviewed
POF-Topic(s)
30202 - Environmental Health
Research field(s)
Lung Research
PSP Element(s)
G-501600-005
G-501600-004
G-505000-007
Grants
Bundesinstitut fur Risikoforschung (Federal Institute for Risk Assessment)
Deutsche Forschungsgemeinschaft (German Research Foundation)
German Center for Lung Research
Copyright
Erfassungsdatum
2023-11-28