Expression data from surface airway epithelial basal cells, ciliated cells, and club cells.

To identify key genes that define surface airway epithelial (SAE) basal cells, we FACS isolated basal, ciliated, and club cell populations as previously reported (Zhao et al., 2014; PMID: 25043474) and performed microarray analysis on isolated mRNA. For fractionating SAE into basal, club, and ciliated populations, cells were stained with EpCAM-PECy7 (eBiosciences), GSIβ4-FITC (Sigma), SSEA1-Alexa Fluor® 647 (BioLegend), and CD24-PE (BD Pharmingen) for 30 minutes on ice as previously described (Zhao et al., 2014), prior to FACS. Basal cells were considered EpCAM+ and GSIβ4+. Secretory cells were considered EpCAM+ and SSEA1+. Ciliated cells were considered EpCAM+, GSIβ4- and CD24+. Primary SAE cells were harvested from C57BL/6 mice and sorted into basal, ciliated, and club cell populations for the purpose of identifying enrichment of transcripts specific to each cell type population. Total RNA from basal, ciliated, and club cell populations were isolated and assayed.