Syed et al. reported that miR-34a modulates inflammatory responses, angiogenesis, proliferation, and apoptosis-related proteins, including Sirt1, Ang1, Akt, Dll1, Notch1/Notch2, and Bcl2 in AT2 cells in a mouse model of BPD [19]. Here, DLL1 is linked to bronchopulmonary dysplasia.