Sokreine Suon

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Our ability to use human embryonic stem (hES) cells in cell replacement therapy for Parkinson's disease depends on the discovery of ways to simply and reliably differentiate a dopaminergic (DA) phenotype in these cells. Although several protocols exist for the differentiation of DA traits in hES, they involve the prolonged use of complex media with(More)
A DNA fragment of about 13 kb containing the human tyrosine hydroxylase (TH) promoter was previously isolated from a genomic DNA library and sequenced. The 11 kb from the transcription start of the human TH promoter was successively joined to the green fluorescent protein (GFP) to generate a transgenic mouse model. High levels of GFP expression could be(More)
A previous study on the human tyrosine hydroxylase (TH) promoter revealed remarkable differences in the mechanism of TH gene regulation between the human and murine models. Indeed, a low degree of homology was observed in the sequence of TH promoters among human, mouse, and rat systems. Only five short conserved regions (CRs) could be identified among the(More)
Studies on rodent bone marrow stromal cells (MSCs) have revealed a capacity, for at least a portion of cells, to express neuron-like traits after differentiation in culture. Little, however, is known about the ability of human MSCs in this regard. We show here that incubation with certain differentiation cocktails, particularly those that include reagents(More)
Adult human bone marrow stromal cells (hMSCs) grown in suspension culture gave rise to spheres of neural progenitor (NP) cells, capable of expressing both dopaminergic (DA) and GABAergic (GABA) traits. After transplantation into the Parkinsonian rat, human NPs and neurons were present at 2 weeks. Although no DA neurons appeared to survive transplantation,(More)
Cell replacement therapy in Parkinson's disease depends on a reliable source of purified dopamine (DA) neurons (PDN) and the identification of factors relevant to their survival. Our goal was to genetically tag and purify by flow cytometry embryonic midbrain DA neurons from a transgenic mouse line carrying 11 kb of human tyrosine hydroxylase promoter(More)
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