Furthermore, a comprehensive miRNAs analysis, performed in bleomycin-induced lung fibrosis, explored the relationship between miRNAs and apoptosis, Wnt signaling, Toll like receptor (TLR) signaling and TGF-β signaling pathway and showed that the miRNAs and the identified potential target genes may contribute to the understanding of the complex transcriptional program of lung fibrosis[14]. This evidence concerns the gene TGFB1 and pulmonary fibrosis.