Modeling lung cell development using human pluripotent stem cells
Ngan, Z.; Quach, H.; Dierolf, J.; Lee, J.-A.; Huang, E. N.; Wong, A. P.
Show abstract
Human pluripotent stem cells (hPSC) differentiations can capture developmental phenotypes and processes. They are useful for studying fundamental biological mechanisms driving tissue morphogenesis and cell lineage development. Here, we show temporal development of lung cell lineages using hPSC that recapitulate developmental milestones observed in primary tissue, the generation of renewable fetal lung epithelial spheroids, and the functional utility of the lung models at different differentiation stages for cystic fibrosis disease modeling. We first show the presence of hPSC-derived lung progenitor cells reminiscent of early trimester lung development and containing basal stem cells that generate renewable airway spheroids. Maturation and polarization in air liquid interface (ALI) generates additional epithelial cell lineages found in adult airways, including pulmonary neuroendocrine, brush, mature basal, ciliated and secretory cell types. Finally, pseudotime and RNA velocity analyses of the integrated datasets from fetal and ALI stages reveal both previously identified and new cell lineage relationships. Overall, hPSC differentiation can capture aspects of human lung development and potentially provide important insight into congenital causes of diseases.
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