徳島大学 教育・研究者情報データベース(EDB)

1. 徳島大学.大学院ヘルスバイオサイエンス研究部.生体システム栄養科学部門.摂食機能制御学講座(2004年4月1日〜2015年3月31日)

1. (英) Nakamura Keiko

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2. (英) Morimoto Yasuhiro

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3. 森本 景之

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4. (英) Kobayashi Shigeru

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5. (英) Kido Hirofumi

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6. (英) Morikawa Masao

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7. 羽地 達次

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(英) Prilocaine induces apoptosis in osteoblastic cells.

(英) To determine whether prilocaine, a local anesthetic, induces apoptosis in osteoblastic cells. After reaching subconfluence, human osteoblastic Saos-2 and MG63 cells and mouse osteoblastic MC3T3-E1 cells were exposed for 48 hr to varying concentrations of prilocaine up to 10 mM and the cytotoxicity of the cells was analyzed by phase-contrast microscopy and WST-1 assay. Saos-2 cells treated for 48 hr with 5 mM prilocaine were stained with Hoechst 33342 and nuclear fragmentation was examined under a fluorescence microscope. DNA was extracted from the cells treated with 5 mM prilocaine and DNA ladder formation (a hallmark of apoptosis) was analyzed by agarose gel electrophoresis. Prilocaine induced cell death in Saos-2 cells in a dose- and time-dependent manner up to the concentration of 10 mM. Marked nuclear condensation and fragmentation of chromatin were observed in the prilocaine-treated cells. DNA ladder formation also was induced by prilocaine treatment. Prilocaine-induced DNA ladder formation was dose-dependent with maximal effect at a concentration of 5 mM and was time-dependent from 12 to 48 hr. DNA ladder formation was also induced by prilocaine treatment in human osteoblastic MG63 cells and mouse osteoblastic MC3T3-E1 cells. Cycloheximide prevented prilocaine-induced apoptosis in Saos-2 cells in a dose-dependent fashion up to 20 microM as determined by WST-1 assay and DNA ladder formation in agarose gel electrophoresis. Osteoblastic cells treated with prilocaine exhibit both morphological and biochemical features indicative of apoptosis. The apoptotic mechanisms involve transcriptional regulation of specific proteins or protein synthesis.

1. (英) Anesthetics, Local
2. (英) Animals
3. アポトーシス(apoptosis)
4. (英) Cell Nucleus
5. (英) Cell Survival
6. (英) Cycloheximide
7. (英) DNA Fragmentation
8. (英) Dose-Response Relationship, Drug
9. (英) Humans
10. (英) Mice
11. (英) Osteoblasts
12. (英) Prilocaine
13. (英) Tumor Cells, Cultured

1. (英) Article.PublicationTypeList.PublicationType: Journal Article

2. (英) Article.PublicationTypeList.PublicationType: Research Support, Non-U.S. Gov't