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Dihydrotestosterone synthesis pathways from inactive androgen 5α-androstane-3β,17β-diol in prostate cancer cells: Inhibition of intratumoural 3β-hydroxysteroid dehydrogenase activities by abiraterone.
http://hdl.handle.net/10191/47581
http://hdl.handle.net/10191/47581db9a179e-849b-42a5-9cb2-3ff86423fc03
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本文 (1.1 MB)
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要旨 (199.6 kB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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| 公開日 | 2018-09-11 | |||||
| タイトル | ||||||
| タイトル | Dihydrotestosterone synthesis pathways from inactive androgen 5α-androstane-3β,17β-diol in prostate cancer cells: Inhibition of intratumoural 3β-hydroxysteroid dehydrogenase activities by abiraterone. | |||||
| タイトル | ||||||
| タイトル | Dihydrotestosterone synthesis pathways from inactive androgen 5α-androstane-3β,17β-diol in prostate cancer cells: Inhibition of intratumoural 3β-hydroxysteroid dehydrogenase activities by abiraterone. | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_46ec | |||||
| タイプ | thesis | |||||
| その他のタイトル | ||||||
| その他のタイトル | 前立腺がん細胞内における非活性型アンドロゲン5α-androstane-3β,17β-diolからのジヒドロテストステロン合成：アビラテロンによるがん細胞内3β-水酸化ステロイド脱水素酵素阻害 | |||||
| 著者 |
Ando, Takashi
× Ando, Takashi |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 50960 | |||||
| 姓名 | 安藤, 嵩 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Intratumoural dihydrotestosterone (DHT) synthesis could be an explanation for castration resistance\nin prostate cancer (PC). By using liquid chromatography-mass spectrometry, we evaluated the\nintratumoral DHT synthesis from 5α-androstane-3β,17β-diol (3β-diol), which is inactive androgen metabolized from DHT. 3β-diol had biochemical potential to be converted to DHT via three metabolic pathways and could stimulate PC cell growth. Especially, 3β-diol was not only converted back to upstream androgens such as dehydroepiandrosterone (DHEA) or Δ5-androstenediol but also converted directly to DHT which is the main pathway from 3β-diol to DHT. Abiraterone had a significant influence on the metabolism of DHEA, epiandrosterone and 3β-diol, by the inhibition of the intratumoural 3β-hydroxysteroid dehydrogenase (3β-HSD) activities which is one of key catalysts in androgen metabolic pathway. The direct-conversion of 3β-diol to DHT was catalysed by 3β-HSD and abiraterone could inhibit this activity of 3β-HSD. These results suggest that PC had a mechanism of intratumoural androgen metabolism to return inactive androgen to active androgen and intratumoural DHT synthesis from 3β-diol is important as one of the mechanisms of castration resistance in PC. Additionally, the inhibition of intratumoural 3β-HSD activity could be a new approach to castration-resistant prostate\ncancer treatment. | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 学位の種類: 博士（医学）. 報告番号: 甲第4250号. 学位記番号: 新大院博（医）甲第728号. 学位授与年月日: 平成29年3月23日 | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Scientific Reports 6 Article number 32198,2016 | |||||
| 書誌情報 | 発行日 2017-03-23 | |||||
| 出版者 | ||||||
| 出版者 | 新潟大学 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1038/srep32198 | |||||
| 著者版フラグ | ||||||
| 値 | ETD | |||||
| 学位名 | ||||||
| 学位名 | 博士（医学） | |||||
| 学位授与機関 | ||||||
| 学位授与機関名 | 新潟大学 | |||||
| 学位授与年月日 | ||||||
| 学位授与年月日 | 2017-03-23 | |||||
| 学位授与番号 | ||||||
| 学位授与番号 | 13101甲第4250号 | |||||
| 学位記番号 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 新大院博（医）甲第728号 | |||||
