| BMMs | Bone marrow-derived macrophages |
| CM | conditioned media |
| FBS | fetal bovine serum |
| GAPDH | glyceraldehyde-3-phosphate dehydrogenase |
| HCC | hepatocellular carcinoma |
| IL-22 | interleukin 22 |
| IL-22R1 | interleukin-22 receptor 1 |
| MMP-2 | matrix metalloproteinase-2 |
| MMP-9 | matrix metalloproteinase-9 |
| MSCs | mesenchymal stem cells |
| MCP-1 | monocyte chemoattractant protein 1 |
| PBS | phosphate-buffered saline |
| S1P | sphingosine-1-phosphate |
| S1PR1 | sphingosine-1-phosphate receptor 1 |