[Effects of propranolol on proliferation of hemangioma-derived mesenchymal stem cells ]

To explore the new mechanism of propranolol for treatment of hemangioma and the effects of propranolol on proliferation of hemangioma-derived mesenchymal stem cells ( Hem- MSCs).

We isolated Hem-MSCs from hemangioma in the proliferating phase by their selective adhesion to plastic culture dishes. Immunofluorescence staining was used to examine the expression of marker antigens in Hem-MSCs. Human umbilical vein endothelial cells(HUVECs) were used as control. Indiuction of multi-lineage differentiation including osteogenesis and adipogeneis was performed with appropriate medium to identify the multi-lineage differentiation potential. MTT cell counting was used to observe the effects of different concentrations of propranolol on proliferation of Hem-MSCs.

Hem- MSCs were fibroblast-like morphology. All of them expressed vimentin, most expressed α-SMA,CD133, some expressed Glutl, and none of them expressed VEGF. Osteogenic, adipogenic differentiations of Hem- MSCs were induced successfully. Effects of low concentration of propranolol on proliferation of Hem-MSCs were not obvious, while high concentration of propranolol can inhibit the proliferation of Hem-MSCs.

The cells we isolated from hemangioma are Hem-MSCs. High concentration of propranolol can inhibit the proliferation of Hem-MSCs.