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Sentinel p16INK4a+ cells in the basement membrane form a reparative niche in the lung [RNA-Seq]

ABSTRACT: We collected freshly sorted mesenchyme (live CD45-Epcam-CD31-PDGFRa+GFP- or GFP+) from dissociated lung tissue of INKBRITE animals to characterize the transcriptome difference between p16INK4a+ vs p16INK4a- cells at homeostasis and during injury. We used fluorescence activated cell sorting (FACS) to exclude immune (CD45+), epithelial (Epcam+), and endothelial (CD31+) cells and positively select for PDGFRa+ mesenchyme. Cells were sequenced at a depth of average of 45 million reads/sample. The results revealed an increase of senescence associated secretory phenotype (SASP) signature in p16INK4+ cells that becomes refined after injury. We found the expression of an epithelial growth factor epiregulin (ereg) increased in p16INK4a+ cells after injury suggesting a possible role of p16INK4a+ senescence during regeneration of lung epithelium.

ORGANISM(S): Mus musculus

PROVIDER: GSE140654 | GEO | 2022/11/02

REPOSITORIES: GEO

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