Fate of amnion-derived stem cells transplanted to the fetal rat brain: migration, survival and differentiation.
We have recently characterized a stem cell population isolated from the rodent amniotic membrane termed amnion-derived stem cells (ADSCs). In vitro ADSCs differentiate into cell types representing all three embryonic layers, including neural cells. In this study we evaluated the neuroectodermal potential of ADSCs in vivo after in utero transplantation into the developing rat brain. A clonal line of green fluorescent protein-expressing ADSCs were infused into the telencephalic ventricles of the developing embryonic day 15.5 rat brain. At E17.5 donor cells existed primarily as spheres in the ventricles with subsets fused to the ventricular walls, suggesting a mode of entry into the brain parenchyma. By E21.5 green fluorescent protein (GFP) ADSCs migrated to a number of brain regions. Examination at postnatal time points revealed that donor ADSCs expressed vimentin and nestin. Subsets of transplanted ADSCs attained neuronal morphologies, although there was no immunohistochemical evidence of neural or glial differentiation. Some donor cells migrated around blood vessels and differentiated into putative endothelial cells. Donor ADSCs transplanted in utero were present in recipients into adulthood with no evidence of immunological rejection or tumour formation. Long-term survival may suggest utility in the treatment of disorders where differentiation to a neural cell type is not required for clinical benefit.
Marcus
A J
AJ
The Ira B. Black Center for Stem Cell Research and the Department of Neuroscience and Cell Biology, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway NJ 08854-5635, USA. marcusak@umdnj.edu
Coyne
T M
TM
Black
I B
IB
Woodbury
D
D
D000650:Amnion / Q000166:cytology*; D000818:Animals; D000831:Animals, Newborn; D001921:Brain / Q000166:cytology*; D002454:Cell Differentiation; D002465:Cell Movement; D002470:Cell Survival; D004622:Embryo, Mammalian / Q000166:cytology; D005333:Fetus / Q000166:cytology*; D049452:Green Fluorescent Proteins / Q000378:metabolism; D019579:Neocortex / Q000166:cytology; D009474:Neurons / Q000166:cytology; D010641:Phenotype; D051381:Rats; D017207:Rats, Sprague-Dawley; D033581:Stem Cell Transplantation; D013234:Stem Cells / Q000166:cytology*; D013997:Time Factors
D049452:Green Fluorescent Proteins
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