Mesenchymal Stem Cells: Coming of Age?
Poster Jun 16, 2006
Alexandra Stolzing and Andy Scutt
AbstractThe effects of aging on human mesenchymal stem cells, (MSC) were investigated. MSC were isolated from patients of different ages and the different parameters of aging were measured either immediately after isolation or after long-term cultivation in vitro. Markers of senescence were investigated, including p21, p53 and beta-galactosidase levels. Antioxidative defense capacity of the MSC were tested together with markers of oxidative damage and antioxidative enzyme activities. Also the changes in differential potential and numbers of MSC were investigated.
We found a distinct subpopulation of Tregs within BMSCs. Tregs and BMSCs in co-culture conferred neuroprotection that varied in a dose-dependent manner. Tregs minimized stem cell production of IL-6, a pro-inflammatory cytokine, and inhibited BMSC secretion of FGF-beta, a cytokine related to BMSC proliferation and differentiation. The ratio of Tregs found natively in BMSCs is optimally adapted to provide the maximum neuroprotective benefit of stem cell treatment after ischemic stroke.READ MORE