Abstract
Neurogenesis persists in the adult mammalian hippocampus. To identify and isolate neuronal progenitor cells of the adult human hippocampus, we transfected ventricular zone-free dissociates of surgically-excised dentate gyrus with DNA encoding humanized green fluorescent protein (hGFP), placed under the control of either the nestin enhancer (E/nestin) or the Tα1 tubulin promoter (P/Tα1), two regulatory regions that direct transcription in neural progenitor cells. The resultant P/Tα1:hGFP+ and E/nestin:enhanced (E)GFP+ cells expressed βIII-tubulin or microtubule-associated protein-2; many incorporated bromodeoxyuridine, indicating their genesis in vitro. Using fluorescence-activated cell sorting, the E/nestin:EGFP+ and P/Tα1:hGFP+ cells were isolated to near purity, and matured antigenically and physiologically as neurons. Thus, the adult human hippocampus contains mitotically competent neuronal progenitors that can be selectively extracted. The isolation of these cells may provide a cellular substrate for re-populating the damaged or degenerated adult hippocampus.
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Acknowledgements
We thank H.M. Keyoung for comments on the manuscript. This work was supported by the National Multiple Sclerosis Society, the Aitken Charitable Trust, the G. Harold and Leila Y. Mathers Charitable Foundation, the Human Frontiers Scientific Program, and National Institute of Neurological Disorders and Stroke grants R01NS29813 and R01NS33106.
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Roy, N., Wang, S., Jiang, L. et al. In vitro neurogenesis by progenitor cells isolated from the adult human hippocampus. Nat Med 6, 271–277 (2000). https://doi.org/10.1038/73119
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DOI: https://doi.org/10.1038/73119
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