Journal
TISSUE ENGINEERING
Volume 12, Issue 7, Pages 1891-1901Publisher
MARY ANN LIEBERT INC
DOI: 10.1089/ten.2006.12.1891
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Funding
- NCRR NIH HHS [C06 RR-14489] Funding Source: Medline
- NIAMS NIH HHS [R01 AR49684-01] Funding Source: Medline
- NIDCR NIH HHS [R01 DE13420] Funding Source: Medline
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Human, rat, and mouse studies have demonstrated the existence of a population of adipose-derived adult stem (ADAS) cells that can undergo multilineage differentiation in vitro. However, it remains unclear whether these cells maintain their multilineage potential in vivo. The aim of this study was to examine the in vitro and in vivo characteristics and behavior of a potential population of murine ADAS (muADAS) cells isolated from the visceral fat of the abdominal cavity of C57BL/10J mice. We used flow cytometry to examine the cells' expression of CD29, CD31, CD45, CD34, CD44, CD144, CD146, Flk1, and Sca-1. The isolated cell population was CD45 negative, which precludes contamination by hematopoietic cells, but was partially positive for Sca-1 and CD34: 2 stem-cell markers. After induction in conditioned medium, the muADAS cells gained the ability to undergo adipogenic, osteogenic, chondrogenic, myogenic, and hematopoietic differentiation in vitro. The muADAS cells readily differentiated to form bone and cartilage in vivo for up to 24 weeks, but their ability to regenerate muscle or reconstitute bone marrow was found to be limited.
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