Figure 7

The signaling pathway for miR-503 playing its EMT-suppressive role in silica-induced pulmonary fibrosis. Silica treatment resulted in the enhanced expression of lncRNA MALAT1, which competitively binding to miR-503 and depressed its expression. When miR-503 was silenced, PI3K p85 binding to miR-503 was released and thereby activated the downstream molecules, thus causing intensified process of EMT.