A Number of Bone Marrow Mesenchymal Stem Cells but Neither Phenotype Nor Differentiation Capacities Changes with Age of Rats

  • Tokalov, Sergey V. (OncoRay - Center for Radiation Research in Oncology, Medical Faculty Carl Gustav Carus Dresden University of Technology) ;
  • Gruner, Susanne (OncoRay - Center for Radiation Research in Oncology, Medical Faculty Carl Gustav Carus Dresden University of Technology) ;
  • Schindler, Sebastian (OncoRay - Center for Radiation Research in Oncology, Medical Faculty Carl Gustav Carus Dresden University of Technology) ;
  • Iagunov, Alexey S. (Research Laboratory of the Late Radiation Pathology, Central Research Institute of Roentgenology and Radiology) ;
  • Baumann, Michael (OncoRay - Center for Radiation Research in Oncology, Medical Faculty Carl Gustav Carus Dresden University of Technology) ;
  • Abolmaali, Nasreddin D. (OncoRay - Center for Radiation Research in Oncology, Medical Faculty Carl Gustav Carus Dresden University of Technology)
  • Received : 2007.04.11
  • Accepted : 2007.06.19
  • Published : 2007.10.31

Abstract

Bone marrow (BM) derived mesenchymal stem cells (MSC) are pluripotent cells which can differentiate into osteogenic, adipogenic and other lineages. In spite of the broad interest, the information about the changes in BM cell composition, in particularly about the variation of MSC number and their properties in relation to the age of the donor is still controversial. The aim of this study was to investigate the age associated changes in variations of BM cell composition, phenotype and differentiation capacities of MSC using a rat model. Cell populations were characterized by flow cytometry using light scattering parameters, DNA content and a set of monoclonal antibodies. Single cell analysis was performed by conventional fluorescent microscopy. In vitro culture of MSC was established and their phenotype and capability for in vitro differentiation into osteogenic and adipogenic cells was shown. Age related changes in tibiae and femurs, amount of BM tissue, BM cell composition, proportions of separated MSC and yield of MSC in 2 weeks of in vitro culture were found. At the same time, neither change in phenotype no in differentiation capacities of MSC was registered. Age-related changes of the number of MSC should be taken into account whenever MSC are intended to be used for investigations.

Keywords

Age;Bone Marrow;Mesenchymal Stem Cells;Rats

Acknowledgement

Supported by : BMBF

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