Ascorbic acid responsive genes during neuronal differentiation of embryonic stem cells

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Abstract
Ascorbic acid has been reported to enhance differentiation of embryonic stem (ES) cells into neurons, however, the specific functions of ascorbic acid have not been defined yet. To address this issue, gene expression profiling was performed using cDNA microarray. Ascorbic acid increased the expressions of genes involved in neurogenesis, maturation, and neurotransmission. Furthermore, statistical analysis using Fisher's exact test revealed ascorbic acid significantly modulated the genes involved in cell adhesion and development category. These results provide information on the role for ascorbic acid during neuronal differentiation of ES cells and might contribute to large-scale generation of neurons for future clinical treatment.