Investigating the role of aging and lung fibrosis in Endothelial Cells with ATAC sequencing

In order to elucidate the contribute of the pulmonary vasculature to lung fibrosis, we injured young and aged mice with bleomycine, to create a model of resolving versus persistent lung fibrosis. The animals were sacrificed 30 days after the injury (time point in which we observed a divergent resolving vs persistent lung fibrosis in young vs aged mice). Freshly isolated lung endothelial cells from young and aged mice either sham or after bleomycin were subjected to ATACseq analysis. A widespresd reduction in chromatin accessibility was found in aged lung endothelial cells, either sham or after bleomycin administration, compared to young endothelial cells.