4.5 Review

Extracellular vesicles and chronic obstructive pulmonary disease (COPD): a systematic review

Journal

RESPIRATORY RESEARCH
Volume 23, Issue 1, Pages -

Publisher

BMC
DOI: 10.1186/s12931-022-01984-0

Keywords

COPD; Chronic Obstructive Pulmonary Disease; Extracellular vesicles; Exovesicles

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This systematic review examines the role of extracellular vesicles (EVs) in the pathogenesis and diagnosis of Chronic Obstructive Pulmonary Disease (COPD). The research found that EVs are involved in the mechanism of COPD pathogenesis, derived from various cell types and containing modified levels of miRNAs. The findings suggest that EVs could be a potential method for COPD diagnosis and progress monitoring.
Background Chronic Obstructive Pulmonary Disease (COPD) is a common inflammatory disease of the airways characterized by irreversible airflow limitation, ranking the third highest cause of death worldwide. Extracellular vesicles (EVs) are important intercellular communication mediators released by cells into their extracellular environment with the capacity to transfer biological signals. EVs involved in COPD hold great potential to understand disease pathogenesis and identify important biomarkers. This systematic review aims to examine all available research on EVs in the pathogenesis and diagnosis of COPD to identify existing knowledge and support further research within the field. Methods Publications were searched using PubMed and EMBASE with the search terms (Exosomes or extracellular vesicles or microvesicles or microparticles or ectosomes) AND (chronic obstructive pulmonary disease or COPD or emphysema or bronchitis). Results Initial search yielded 512 papers of which 142 were manually selected for review and 43 were eligible for analyses. The studies were divided into groups according to the role of EVs in pathogenesis, EV origin and cargo, their role in COPD exacerbations and their diagnostic utility. EVs were found to be involved in the mechanism of pathogenesis of COPD, derived from various cell types, as well as containing modified levels of miRNAs. EVs also varied according to the pathophysiological status of disease, therefore presenting a possible method for COPD diagnosis and progress monitoring. Conclusion The current findings show the limited but good quality research looking at the role of EVs in COPD, demonstrating the need for more studies to better define and provide further insight into the functional characteristics of EV in COPD pathogenesis.

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