Osteogenic Differentiation of Noncultured Immunoisolated Bone Marrow-Derived CD105 super(+) Cells
The culture expansion of human mesenchymal stem cells (hMSCs) may alter their characteristics and is a costly and time-consuming stage. This study demonstrates for the first time that immunoisolated noncultured CD105-positive (CD105 super(+)) hMSCs are multipotent in vitro and exhibit the capacity t...
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Published in | Stem cells (Dayton, Ohio) Vol. 24; no. 7; pp. 1728 - 1737 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
01.07.2006
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Abstract | The culture expansion of human mesenchymal stem cells (hMSCs) may alter their characteristics and is a costly and time-consuming stage. This study demonstrates for the first time that immunoisolated noncultured CD105-positive (CD105 super(+)) hMSCs are multipotent in vitro and exhibit the capacity to form bone in vivo. hMSCs are recognized as promising tools for bone regeneration. However, the culture stage is a limiting step in the clinical setting. To establish a simple, efficient, and fast method for applying these cells for bone formation, a distinct population of CD105 super(+) hMSCs was isolated from bone marrow (BM) by using positive selection based on the expression of CD105 (endoglin). The immunoisolated CD105 super(+) cell fraction represented 2.3% plus or minus 0.45% of the mononuclear cells (MNCs). Flow cytometry analysis of freshly immunoisolated CD105 super(+) cells revealed a purity of 79.7% plus or minus 3.2%. In vitro, the CD105 super(+) cell fraction displayed significantly more colony-forming units-fibroblasts (CFU-Fs; 6.3 plus or minus 1.4) than unseparated MNCs (1.1 plus or minus 0.3; p < .05). Culture-expanded CD105 super(+) cells expressed CD105, CD44, CD29, CD90, and CD106 but not CD14, CD34, CD45, or CD31 surface antigens, and these cells were able to differentiate into osteogenic, chondrogenic, and adipogenic lineages. In addition, freshly immunoisolated CD105 super(+) cells responded in vivo to recombinant bone morphogenetic protein-2 by differentiating into chondrocytes and osteoblasts. Genetic engineering of freshly immunoisolated CD105 super(+) cells was accomplished using either adenoviral or lentiviral vectors. Based on these findings, it is proposed that noncultured BM-derived CD105 super(+) hMSCs are osteogenic cells that can be genetically engineered to induce tissue generation in vivo. |
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AbstractList | The culture expansion of human mesenchymal stem cells (hMSCs) may alter their characteristics and is a costly and time-consuming stage. This study demonstrates for the first time that immunoisolated noncultured CD105-positive (CD105 super(+)) hMSCs are multipotent in vitro and exhibit the capacity to form bone in vivo. hMSCs are recognized as promising tools for bone regeneration. However, the culture stage is a limiting step in the clinical setting. To establish a simple, efficient, and fast method for applying these cells for bone formation, a distinct population of CD105 super(+) hMSCs was isolated from bone marrow (BM) by using positive selection based on the expression of CD105 (endoglin). The immunoisolated CD105 super(+) cell fraction represented 2.3% plus or minus 0.45% of the mononuclear cells (MNCs). Flow cytometry analysis of freshly immunoisolated CD105 super(+) cells revealed a purity of 79.7% plus or minus 3.2%. In vitro, the CD105 super(+) cell fraction displayed significantly more colony-forming units-fibroblasts (CFU-Fs; 6.3 plus or minus 1.4) than unseparated MNCs (1.1 plus or minus 0.3; p < .05). Culture-expanded CD105 super(+) cells expressed CD105, CD44, CD29, CD90, and CD106 but not CD14, CD34, CD45, or CD31 surface antigens, and these cells were able to differentiate into osteogenic, chondrogenic, and adipogenic lineages. In addition, freshly immunoisolated CD105 super(+) cells responded in vivo to recombinant bone morphogenetic protein-2 by differentiating into chondrocytes and osteoblasts. Genetic engineering of freshly immunoisolated CD105 super(+) cells was accomplished using either adenoviral or lentiviral vectors. Based on these findings, it is proposed that noncultured BM-derived CD105 super(+) hMSCs are osteogenic cells that can be genetically engineered to induce tissue generation in vivo. |
Author | Gazit, Dan Zilberman, Yoram Gazit, Zulma Kandel, Leonid Liebergall, Meir Aslan, Hadi Oskouian, Rod J |
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Title | Osteogenic Differentiation of Noncultured Immunoisolated Bone Marrow-Derived CD105 super(+) Cells |
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