The comparition of biological characteristics and multilineage differentiation of bone marrow and adipose derived Mesenchymal stem cells.

We compared the two sources of adipose and bone marrow-derived mesenchymal stem cells (BMSCs and AMSCs ) in multiple differentiation capacity and biological characteristics to provide a theoretical basis for stem cells transplantation. We isolated bone marrow- and adipose-derived mesenchymal stem cells and compared their phenotype,cell doubling time, the secretion of factors and their ability of multi-differentiation. We also compared their differences in T lymphocyte activation, proliferation and suppression. BMSCs and AMSCs were similar in cell phenotype and the differences existed only in the expression of CD106. On the proliferation rate, AMSCs were faster than BMSCs (doubling time 28 vs. 39 h). In addition, both of these two sources of cells were able to differentiate into bone, fat and cartilage that proved their stem cells properties and the number of stem cell progenitors (CFU-F) from adipose tissue were 10 times larger than those from bone marrow. But AMSCs showed a diminished capacity for suppressing T lymphocyte proliferation and activation compared to BMSCs. Cell origin and abundance were decisive factors in stem cells applications and, in the same volume, with the same premise of AMSCs and BMSCs, adipose tissue is a more promising source of stem cells.