microRNA-378 decreased the expressions of apoptosis-related genes. Changes of apoptosis-related genes under different conditions in the two experimental groups. Western blot analysis (A), (B) and quantitative real-time polymerase chain reaction (C), (D), (E), (F) were performed to explore the expressions of BCL-2, BAX, tumor necrosis factor alpha (TNFα) and TUSC-2 after cells of the two experimental groups were exposed to different conditions. **P < 0.01. GAPDH, glyceraldehyde 3-phosphate dehydrogenase; miRNA, microRNA; MSC, mesenchymal stem cell.