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Apoptotic cell nuclei were stained with Hoechst 33342. Induction of autophagy was examined either by staining cells with monodansylcadaverine (MDC) or by Western blotting to detect conversion of microtuble-associated protein light chain 3 (MAP-LC3) (LC3-I) to the membrane-bound form (LC3-II). Cellular senescence markers including induction of senescence-associated beta-galactosidase (SA-beta-gal) were examined. The mean telomere length of irradiated cells was determined by Southern blot hybridization. Expression of tumor suppressor p53 and cyclin/cyclin-dependent kinase inhibitor p21(WAF1/CIP1) in the irradiated cells was analyzed by Western blotting. \nRESULTS: When NP-2 cells were irradiated with C-ions at 6 Gy, the major population of the cells died of apoptosis and autophagy. 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Irradiation with carbon ion beams induces apoptosis, autophagy, and cellular senescence in a human glioma-derived cell line
https://repo.qst.go.jp/records/45758
https://repo.qst.go.jp/records/45758f99402d2-4b02-42bf-89ce-22fa2fa9925e
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2010-02-26 | |||||
タイトル | ||||||
タイトル | Irradiation with carbon ion beams induces apoptosis, autophagy, and cellular senescence in a human glioma-derived cell line | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Jinno-Oue, Atsushi
× Jinno-Oue, Atsushi× Shimizu, Nobuaki× Hamada, Nobuyuki× Wada, Seiichi× Tanaka, Atsushi× Shinagawa, Masahiko× Ohtsuki, Takahiro× Mori, Takahisa× N., Saha Manujendra× S., Hoque Ariful× Islam, Salequl× Kogure, Kimitaka× Funayama, Tomoo× Kobayashi, Yasuhiko× Hoshino, Hiroo× 浜田 信行 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | PURPOSE: We examined biological responses of human glioma cells to irradiation with carbon ion beams (C-ions). METHODS AND MATERIALS: A human glioma-derived cell line, NP-2, was irradiated with C-ions. Apoptotic cell nuclei were stained with Hoechst 33342. Induction of autophagy was examined either by staining cells with monodansylcadaverine (MDC) or by Western blotting to detect conversion of microtuble-associated protein light chain 3 (MAP-LC3) (LC3-I) to the membrane-bound form (LC3-II). Cellular senescence markers including induction of senescence-associated beta-galactosidase (SA-beta-gal) were examined. The mean telomere length of irradiated cells was determined by Southern blot hybridization. Expression of tumor suppressor p53 and cyclin/cyclin-dependent kinase inhibitor p21(WAF1/CIP1) in the irradiated cells was analyzed by Western blotting. RESULTS: When NP-2 cells were irradiated with C-ions at 6 Gy, the major population of the cells died of apoptosis and autophagy. The residual fraction of attached cells (<1% of initially irradiated cells) could not form a colony: however, they showed a morphological phenotype consistent with cellular senescence, that is, enlarged and flattened appearance. The senescent nature of these attached cells was further indicated by staining for SA-beta-gal. The mean telomere length was not changed after irradiation with C-ions. Phosphorylation of p53 at serine 15 as well as the expression of p21(WAF1/CIP1) was induced in NP-2 cells after irradiation. Furthermore, we found that irradiation with C-ions induced cellular senescence in a human glioma cell line lacking functional p53. CONCLUSIONS: Irradiation with C-ions induced apoptosis, autophagy, and cellular senescence in human glioma cells. |
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書誌情報 |
International Journal of Radiation Oncology Biology Physics 巻 76, 号 1, p. 229-241, 発行日 2009-12 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0360-3016 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.ijrobp.2009.08.054 |