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Title

Cryopreservation of GABAergic neuronal precursors for cell-based therapy

AuthorsRodríguez Martínez, Daniel ; Martínez-Losa, Magdalena ; Álvarez-Dolado, Manuel
Issue Date2017
PublisherPublic Library of Science
CitationPLoS ONE 12(1): e0170776 (2017)
AbstractCryopreservation protocols are essential for stem cells storage in order to apply them in the clinic. Here we describe a new standardized cryopreservation protocol for GABAergic neural precursors derived from the medial glanglionic eminence (MGE), a promising source of GABAergic neuronal progenitors for cell therapy against interneuron-related pathologies. We used 10% Me2 SO as cryoprotectant and assessed the effects of cell culture amplification and cellular organization, as in toto explants, neurospheres, or individualized cells, on post-thaw cell viability and retrieval. We confirmed that in toto cryopreservation of MGE explants is an optimal preservation system to keep intact the interneuron precursor properties for cell transplantation, together with a high cell viability (>80%) and yield (>70%). Postthaw proliferation and self-renewal of the cryopreserved precursors were tested in vitro. In addition, their migration capacity, acquisition of mature neuronal morphology, and potency to differentiate into multiple interneuron subtypes were also confirmed in vivo after transplantation. The results show that the cryopreserved precursor features remained intact and were similar to those immediately transplanted after their dissection from the MGE. We hope this protocol will facilitate the generation of biobanks to obtain a permanent and reliable source of GABAergic precursors for clinical application in cell-based therapies against interneuronopathies.
Publisher version (URL)https://doi.org/10.1371/journal.pone.0170776
URIhttp://hdl.handle.net/10261/165478
Identifiersdoi: 10.1371/journal.pone.0170776
e-issn: 1932-6203
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