In our data, in CB-MNC vs. BPD group, Sirt3 was among the significantly changed genes (log2FC 6.93, sheet CB-MNC vs. BPD group), while in UC-MSC, the changed Sirt family members were sirt2, and the expression level was downregulated (Chen Y. et al., 2020). Here, SIRT2 is linked to bronchopulmonary dysplasia.