FIGURE 2.

The potential mechanisms of MSCs therapy for COVID‐19. MSCs have great therapeutic potential in immunomodulation and tissue repair through secretion of soluble paracrine protein factors and exosomes. MSCs can regulate the functions of a variety of immune cells, secrete several cytokines, promote tissue repair and regeneration, and may play important therapeutic roles in patients with COVID‐19. MSCs: mesenchymal stem cells; HGF, hepatocyte growth factor; VEGF, vascular endothelial growth factor; KGF, keratinocyte growth factor; FGF, fibroblast growth factor; TGF‐β, transforming growth factor‐β; TNF‐α, tumour necrosis factor‐α; MSC‐exo, exosomes