Table 1.
Tissue | MSC niche | Cell subpopulations | MSC in vitro surface markers | Multipotentiality |
Bone marrow | Subendosteal and vascular | Osteoblasts, Endothelial progenitor and mature cells, Macrophages, MSCs | Positive: CD44, CD71, CD73, CD90, CD105, CD106, CD120a and | Adipogenic, Chondrogenic, and Osteogenic. Pre-committed into osteogenic lineage. |
Hematopoietic stem and progenitor cells, lymphocytes, megakaryocytes, erythrocytes, monocytes, neutrophils, basophils, eosinophils | CD124 | |||
Negative: CD14, CD34 and CD45 | ||||
Adipose tissue | Vascular | Adipocytes | Positive: CD13, CD29, | Adipogenic, Chondrogenic, and Osteogenic. Pre-committed into adipogenic lineage. |
CD44, CD73, CD34, CD36, CD90 and CD105 | ||||
SVF: Pre-adipocytes, endothelial progenitor and mature cells, macrophages, fibroblasts, MSCs | Negative: CD31, CD45, CD235a and CD106 |
MSCs: Mesenchymal stromal/stem cells; SVF: Stromal-vascular fraction.