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Pulmonary fibrosis model using micro-CT analyzable human PSC–derived alveolar organoids containing alveolar macrophage-like cells

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Issue Date
2022-01
Publisher
Kluwer Academic Publishers
Citation
Cell Biology and Toxicology
Abstract
© 2022, The Author(s), under exclusive licence to Springer Nature B.V.Human lung organoids (hLOs) are useful for disease modelling and drug screening. However, a lack of immune cells in hLOs limits the recapitulation of in vivo cellular physiology. Here, we generated hLOs containing alveolar macrophage (AMφ)–like cells derived from pluripotent stem cells (PSC). To bridge hLOs with advanced human lung high-resolution X-ray computed tomography (CT), we acquired quantitative micro-CT images. Three hLO types were observed during differentiation. Among them, alveolar hLOs highly expressed not only lung epithelial cell markers but also AMφ-specific markers. Furthermore, CD68+ AMφ-like cells were spatially organized on the luminal epithelial surface of alveolar hLOs. Bleomycin-treated alveolar hLOs showed upregulated expression of fibrosis-related markers and extracellular matrix deposits in the alveolar sacs. Alveolar hLOs also showed structural alterations such as excessive tissue fraction under bleomycin treatment. Therefore, we suggest that micro-CT analyzable PSC-derived alveolar hLOs are a promising in vitro model to predict lung toxicity manifestations, including fibrosis. Graphical abstract: [Figure not available: see fulltext.]
ISSN
0742-2091
URI
https://hdl.handle.net/10371/184146
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College of Pharmacy (약학대학)Dept. of Pharmacy (약학과)Journal Papers (저널논문_약학과)
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