量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum and Radiological Science and Technology.
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Radiation exposure during the fetal period leads to disturbances in development of the brain and can induce microcephaly. It suggests that X-irradiation may affect proliferation of the neural stem cells during early neural development. Here we investigated the effects of the irradiation on the neural stem cells, prepared from mouse embryonic stem (ES) cells by the Neural Stem Sphere (NSS) method. The proliferation of the neural stem cells cultured with fibroblast growth factor-2 (FGF-2) was dose-dependently inhibited by X-irradiation. Although X-irradiation also induced process elongation of the cells in a dose-dependent manner, gene expression of the marker genes for the neural stem cells, nestin, musashi-1, was maintained. This work was partly supported by a grant of LRI by JCIA and Selective Research Fund of Tokyo Metropolitan University.
マウス胚性幹細胞由来神経幹細胞の増殖と維持に対するＸ線照射の影響
