Mechanisms of beneficial effects of human placenta MSC transplantation in rats with experimental ischemic stroke
Poster Sep 21, 2009
Human MSC transplantation significantly reduced the volume of experimental ischemic lesion in rat model. It also greatly stimulated stem and progenitor cell proliferation in the subventricular region and hippocampus and cell migration from these areas towards the ischemia site. Beneficial effects of MSC in rats with brain ischemia are likely to be associated with enhancement of host neural stem and progenitor cell proliferation and migration towards the affected area.
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
The presence of CelTOS mAb significantly inhibited oocyst development in mosquitoes in both in vivo and in vitro assays. Importantly, the experimental results with an innovative in vivo humanized mouse model confirmed that circulating anti-CelTOS antibody effectively inhibits P. falciparum ookinete development to oocyst in mosquitoes. These results support the development of CelTOS as a transmission blocking vaccine.