Table 2.

Biological function of soluble factor secreted by MSCs.

Soluble factors	Biological function
IDO	Suppressing proliferation and effect of immune cells
TSG6	Anti-inflammatory effect
NO	Suppressing proliferation and modulation of T cell, promoting apoptosis of immune cells
IL-10	Suppressing apoptosis of immune cells
CCL2	Suppressing activation and migration of TH17 cells, promoting migration of monocyte
PGE2	Suppressing generation and migration of TNF, proliferation of T cell, and cytolytic activity of NK cell