Minimal criteria for defining multipotent mesenchymal stromal cells. The International Society for Cellular Therapy position statement

Published on Jan 1, 2006in Cytotherapy4.218
· DOI :10.1080/14653240600855905
Massimo Dominici51
Estimated H-index: 51
(University of Modena and Reggio Emilia),
K. Le Blanc26
Estimated H-index: 26
(Karolinska University Hospital)
+ 7 AuthorsEdwin M. Horwitz31
Estimated H-index: 31
(St. Jude Children's Research Hospital)
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Abstract
The considerable therapeutic potential of human multipotent mesenchymal stromal cells (MSC) has generated markedly increasing interest in a wide variety of biomedical disciplines. However, investigators report studies of MSC using different methods of isolation and expansion, and different approaches to characterizing the cells. Thus it is increasingly difficult to compare and contrast study outcomes, which hinders progress in the field. To begin to address this issue, the Mesenchymal and Tissue Stem Cell Committee of the International Society for Cellular Therapy proposes minimal criteria to define human MSC. First, MSC must be plastic-adherent when maintained in standard culture conditions. Second, MSC must express CD105, CD73 and CD90, and lack expression of CD45, CD34, CD14 or CD11b, CD79α or CD19 and HLA-DR surface molecules. Third, MSC must differentiate to osteoblasts, adipocytes and chondroblasts in vitro . While these criteria will probably require modification as new knowledge unfolds, we believe this minimal set of standard criteria will foster a more uniform characterization of MSC and facilitate the exchange of data among investigators.
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