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SVCT2 Is Expressed by Cerebellar Precursor Cells, Which Differentiate into Neurons in Response to Ascorbic Acid. | LitMetric
Ascorbic acid (AA) is a known antioxidant that participates in a wide range of processes, including stem cell differentiation. It enters the cell through the sodium-ascorbate co-transporter SVCT2, which is mainly expressed by neurons in the adult brain. Here, we have characterized SVCT2 expression in the postnatal cerebellum in situ, a model used for studying neurogenesis, and have identified its expression in granular precursor cells and mature neurons. We have also detected SVCT2 expression in the cerebellar cell line C17.2 and in postnatal cerebellum-derived neurospheres in vitro and have identified a tight relationship between SVCT2 expression and that of the stem cell-like marker nestin. AA supplementation potentiates the neuronal phenotype in cerebellar neural stem cells by increasing the expression of the neuronal marker β III tubulin. Stable over-expression of SVCT2 in C17.2 cells enhances β III tubulin expression, but it also increases cell death, suggesting that AA transporter levels must be finely tuned during neural stem cell differentiation.
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