Expansion of human bone marrow-derived mesenchymal stromal cells: serum-reduced medium is better than conventional medium.
OBJECTIVE
Human mesenchymal stromal cells (hMSC) are of enormous interest for various clinical applications. For the expansion of isolated hMSC to relevant numbers for clinical applications, 10% fetal bovine serum (FBS)-supplemented medium is commonly used. The main critical disadvantage of FBS is the possibility of transmission of infectious agents as well as the possibility of immune rejection of the transplanted cells in response to the bovine serum. Therefore, we tested a commercially available medium, Panserin 401, that was specifically developed for serum-free cell cultivation.


METHODS
hMSC were isolated from bone marrow (BM) and expanded in either Dulbecco's modified Eagle medium (DMEM) or Panserin 401 alone, or combined with FBS (2% or 10%), with or without supplementary growth factors. Cell proliferation and cytotoxicity were monitored twice a week for 3 weeks.


CONCLUSIONS
No proliferation was observed in any of the serum-free media. However, DMEM/10% FBS (the conventional culture medium for hMSC) and DMEM/2% FBS with growth factors revealed moderate proliferation. Interestingly, the best proliferation was obtained using Panserin 401 supplemented with 2% FBS and growth factors (as well as with 10% FBS). Analysis of cell growth in Panserin 401 supplemented with 2% FBS only or with growth factors only revealed no proliferation, demonstrating the necessity of the combination of 2% FBS and growth factors. Efficient isolation and expansion of hMSC from cancellous bone could also be performed using Panserin 401 with 2% FBS and growth factors. Furthermore, these isolated cultures maintained multipotency, as demonstrated by adipogenic and osteogenic differentiation.
Institute for Neuropathology, Aachen University Hospital, RWTH Aachen, Germany.
Katrin
K
Montzka
Tobias
T
Führmann
Michael
M
Wöltje
Gary A
GA
Brook
D000818:Animals; D001853:Bone Marrow / Q000473:pathology; D002417:Cattle; D018929:Cell Culture Techniques / Q000379:methods; D002454:Cell Differentiation; D049109:Cell Proliferation; D002478:Cells, Cultured; D016895:Culture Media, Serum-Free; D018562:Disease Transmission, Infectious / Q000517:prevention & control; D006084:Graft Rejection / Q000276:immunology / Q000517:prevention & control; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000276:immunology / Q000473:pathology*; D044967:Serum / Q000276:immunology*; D033581:Stem Cell Transplantation
D016895:Culture Media, Serum-Free