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Creating a graft-friendly environment for stem cells in diseased brains



Creating a graft-friendly environment for stem cells in diseased brains



Journal of Clinical Investigation 128(1): 116-119



Most of the adult CNS lacks regenerative activity in terms of both neuron birth and neurite outgrowth. While this regeneration-unfriendly environment of the adult CNS may preserve the existing neuronal circuitry that takes years to develop in higher organisms, it also poses a major obstacle for CNS repair later in life. In this issue of the JCI, Song et al. report on their development of a strategy that uses region-specific and molecularly engineered astrocytes to turn an unfavorable brain environment into a favorable one for engrafted neural stem/progenitor cells (NSC/NPCs). In a rat model of Parkinson's disease (PD), cografting NPCs with midbrain-derived astrocytes engineered to overexpress the transcription factors Nurr1 and Foxa2 promotes maturation and survival of the graft, resulting in therapeutic improvement. The results of this study raise the prospect of using modified astrocytes to improve the survival, maturation, and integration of engrafted NSC/NPCs as a restorative treatment for PD.

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Accession: 057215092

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PMID: 29227287


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