Journal: Scientific Reports
Article Title: High-throughput human primary cell-based airway model for evaluating influenza, coronavirus, or other respiratory viruses in vitro
doi: 10.1038/s41598-021-94095-7
Figure Lengend Snippet: Healthy PREDICT96-ALI airway model. ( A ) Schematic illustrating the configuration of the biomimetic airway model within the PREDICT96-ALI platform with associated microenvironmental features including differentiated cell populations (ciliated, goblet, basal and club cells) of the mature tissue, apical mucus and periciliary fluid present on mature human airway, and basolateral fluid flow to recirculate nutrients, remove waste products, and oxygenate the media. ( B ) Timeline detailing proliferation, differentiation, inoculation and processing (sample collection, fixation, imaging, etc.) of the PREDICT96-ALI airway tissue over 4–6 weeks. ( C ) Stains of ciliated (acetylated-tubulin, green; β-tubulin, red), basal (CK5, green), and goblet (Muc5ac, green) cells counterstained for nucleic acids (DAPI, blue) and actin (phalloidin, grey) at ×40 magnification shown, with a 50 µm scale bar. Donor B is featured as representative. ( D ) High-resolution confocal microscopy ×40 z-stack orthogonal image of the pseudostratified epithelium with approximately 4 cell layers and 50 µm thickness established after culture at 28 days at an ALI. Donor B is featured as representative. ( E ) Transepithelial electrical resistance (TEER) plotted over time for three human primary epithelial cell donor populations, showing that the same ultimate level of barrier function is reached, although the kinetics of barrier resistance are different.
Article Snippet: To seed PREDICT96-ALI plates, NHBEs were thawed, counted, re-suspended in complete small airway epithelial cell growth media (SAGM; Lonza), 100 U/mL penicillin–streptomycin (Thermo Fisher), 5 μM ROCKi (Tocris), 1 μM A-83-01 (Tocris), 0.2 μM DMH-1 (Tocris), 0.5 μM CHIR99021 (Tocris) as described elsewhere (hereafter referred to as SAGM + 4i), and plated at 10,000 cells per device in a 3 μL volume directly onto the membrane.
Techniques: Imaging, Confocal Microscopy