Mesenchymal stem cells isolated from the human bone marrow: cultivation, phenotypic analysis and changes in proliferation kinetics.
Acta medica (Hradec Králové) / Universitas Carolina, Facultas Medica Hradec Králové(2006)
Abstract
Mesenchymal Stem Cells (MSCs) are rare elements living in various organs (e.g., bone marrow), able to differentiate into specialized tissues, such as bone, cartilage, tendon, and myocardium. Since the first description of MSCs by Fridenshtein, several investigators have shown that these cells can also differentiate into chondrocytes, adipocytes, and, at least, in rodents into skeletal myoblasts. Later on, more primitive progenitor cells were characterized, able to give rise not only to limb-bud mesoderm, but also to cells of visceral mesoderm. Those cells were named mesodermal progenitor cells (MPCs). The aim of our study was to characterize and compare the biological properties and spontaneous differentiation potential of two different cell types (MSCs and MPCs) isolated from the human vertebral body bone marrow. The results of our experiments proved that the MPCs can be expanded beyond Hayflick's limit and differed from MSCs in morphology, biological and phenotypic characteristics. Because of their high proliferative and differentiation potential, MPCs can become more attractive source of adult stem cells for therapeutic purposes.
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Key words
Bone marrow stromal cells,Mesenchymal stem cells,Mesodermal progenitor cells,Long-term culture,Osteogenesis,Chondrogenesis
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