WEKO3
アイテム
Bystin in human cancer cells : intracellular localization and function in ribosome biogenesis
http://hdl.handle.net/2237/9306
http://hdl.handle.net/2237/9306117a733c-51ca-41e2-bc3d-1da07032abb8
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
BJ2007.pdf (2.6 MB)
|
|
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-01-16 | |||||
| タイトル | ||||||
| タイトル | Bystin in human cancer cells : intracellular localization and function in ribosome biogenesis | |||||
| 言語 | en | |||||
| 著者 |
MIYOSHI, Masaya
× MIYOSHI, Masaya× OKAJIMA, Tetsuya× MATSUDA, Tsukasa× FUKUDA, Michiko N.× NADANO, Daita |
|||||
| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | BYSL | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | cancer | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | embryo implantation | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | nucleolar stress | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | ribosomal RNA processing | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | ribosome biogenesis | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | While bystin has been identified as a protein potentially involved in human embryo implantation-a process unique to mammals-the bystin gene is evolutionarily conserved from yeast to humans. DNA microarray data indicates that bystin is overexpressed in human cancers, suggesting that it promotes cell growth. We undertook RT-PCR and immunoblotting and confirmed that bystin mRNA and protein, respectively, is expressed in human cancer cell lines, including HeLa. Subcellular fractionation identified bystin protein as nuclear and cytoplasmic, and immunofluorescence showed that nuclear bystin localizes mainly in the nucleolus. Sucrose gradient ultracentrifugation of total cytoplasmic ribosomes revealed preferential association of bystin with the 40s subunit fractions. To analyze its function, bystin expression in cells was suppressed by RNA interference. Pulse-chase analysis of ribosomal RNA processing suggested that bystin knockdown delays processing of 18s ribosomal RNA, a component of the 40s submit. Furthermore, this knockdown significantly inhibited cell proliferation. Our findings suggest that bystin may promote cell proliferation by facilitating ribosome biogenesis, specifically in the production of the 40s subunit. Localization of bystin to the nucleolus, the site of ribosome biogenesis, was blocked by low concentrations of actinomycin D, a reagent causing nucleolar stress. when bystin was transiently overexpressed in HeLa cells subjected to nucleolar stress, nuclear bystin was included in particles different from the nuclear stress granules induced by heat shock. By contrast, cytoplasmic bystin was barely affected by nucleolar stress. These results suggest that, while bystin may play multiple roles in mammalian cells, a conserved function is to facilitate ribosome biogenesis required for cell growth. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | Biochemical Society | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1042/BJ20061597 | |||||
| 書誌情報 |
en : Biochemical journal 巻 404, 号 3, p. 373-381, 発行日 2007-06 |
|||||
| フォーマット | ||||||
| 値 | application/pdf | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/9306 | |||||
| 識別子タイプ | HDL | |||||
