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Review

Epithelial Cells and Inflammation in Pulmonary Wound Repair

University of Edinburgh Centre for Inflammation Research, Queen’s Medical Research Institute, Edinburgh Bioquarter, Edinburgh EH16 4TJ, UK
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Academic Editor: János G. Filep
Cells 2021, 10(2), 339; https://doi.org/10.3390/cells10020339
Received: 18 November 2020 / Revised: 15 January 2021 / Accepted: 30 January 2021 / Published: 5 February 2021
Respiratory diseases are frequently characterised by epithelial injury, airway inflammation, defective tissue repair, and airway remodelling. This may occur in a subacute or chronic context, such as asthma and chronic obstructive pulmonary disease, or occur acutely as in pathogen challenge and acute respiratory distress syndrome (ARDS). Despite the frequent challenge of lung homeostasis, not all pulmonary insults lead to disease. Traditionally thought of as a quiescent organ, emerging evidence highlights that the lung has significant capacity to respond to injury by repairing and replacing damaged cells. This occurs with the appropriate and timely resolution of inflammation and concurrent initiation of tissue repair programmes. Airway epithelial cells are key effectors in lung homeostasis and host defence; continual exposure to pathogens, toxins, and particulate matter challenge homeostasis, requiring robust defence and repair mechanisms. As such, the epithelium is critically involved in the return to homeostasis, orchestrating the resolution of inflammation and initiating tissue repair. This review examines the pivotal role of pulmonary airway epithelial cells in initiating and moderating tissue repair and restitution. We discuss emerging evidence of the interactions between airway epithelial cells and candidate stem or progenitor cells to initiate tissue repair as well as with cells of the innate and adaptive immune systems in driving successful tissue regeneration. Understanding the mechanisms of intercellular communication is rapidly increasing, and a major focus of this review includes the various mediators involved, including growth factors, extracellular vesicles, soluble lipid mediators, cytokines, and chemokines. Understanding these areas will ultimately identify potential cells, mediators, and interactions for therapeutic targeting. View Full-Text
Keywords: epithelium; lung; regeneration; repair; inflammation; injury; resolution epithelium; lung; regeneration; repair; inflammation; injury; resolution
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MDPI and ACS Style

Croasdell Lucchini, A.; Gachanja, N.N.; Rossi, A.G.; Dorward, D.A.; Lucas, C.D. Epithelial Cells and Inflammation in Pulmonary Wound Repair. Cells 2021, 10, 339. https://doi.org/10.3390/cells10020339

AMA Style

Croasdell Lucchini A, Gachanja NN, Rossi AG, Dorward DA, Lucas CD. Epithelial Cells and Inflammation in Pulmonary Wound Repair. Cells. 2021; 10(2):339. https://doi.org/10.3390/cells10020339

Chicago/Turabian Style

Croasdell Lucchini, Amanda, Naomi N. Gachanja, Adriano G. Rossi, David A. Dorward, and Christopher D. Lucas. 2021. "Epithelial Cells and Inflammation in Pulmonary Wound Repair" Cells 10, no. 2: 339. https://doi.org/10.3390/cells10020339

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