To demonstrate the abovementioned potential approach for inhibiting PF progression, Ji et al. designed micelles generated by a graft copolymer of multiple PEGs modified branched PEI to deliver runt-related transcription factor-1 (RUNX1) siRNA (siRUNX1) to the lung-resident mesenchymal stem cells (LR-MSCs) in the lungs. This evidence concerns the gene RUNX1 and pemphigus foliaceus.