| Item type |
学術雑誌論文 / Journal Article_02(1) |
| 公開日 |
2009-03-11 |
| タイトル |
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タイトル |
A Novel Role of the NRF2 Transcription Factor in the Regulation of Arsenite-Mediated Keratin 16 Gene Expression in Human Keratinocytes |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ |
journal article |
| 著者 |
吉田, 貴彦
Endo, H
Sugioka, Y
Nakagi, Y
Saijo, Y
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| 著者 ローマ字 |
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Yoshida, Takahiko |
| 書誌情報 |
Environmental Health Perspectives
巻 116,
号 7,
p. 873-879,
発行日 2008-07-01
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| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0091-6765 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.1289/ehp.10696 |
| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
BACKGROUND: Inorganic sodium arsenite (iAs) is a ubiquitous environmental contaminant and is associated with an increased risk of skin hyperkeratosis and cancer. OBJECTIVES: We investigated the molecular mechanisms underlying the regulation of the keratin 16 (K16) gene by iAs in the human keratinocyte cell line HaCaT. METHODS: We performed reverse transcriptase polymerase chain reaction, luciferase assays, Western blots, and electrophoretic mobility shift assays to determine the transcriptional regulation of the K16 gene by iAs. We used gene overexpression approaches to elucidate the nuclear factor erythroidderived2 related factor 2 (NRF2) involved in the K16 induction. RESULTS: iAs induced the mRNA and protein expression of K16. We also found that the expression of K16 was transcriptionally induced by iAs through activator protein-1–like sites and an antioxidant response element (ARE) in its gene promoter region. Treatment with iAs also enhanced the production and translocation of the NRF2 transcription factor, an ARE-binding protein, into the nucleus without modification of its mRNA expression. In addition, iAs elongated the half-life of the NRF2 protein. When overexpressed in HaCaT cells, NRF2 was also directly involved in not only the up-regulation of the detoxification gene thioredoxin but also K16 gene expression.CONCLUSIONS: Our data clearly indicate that the K16 gene is a novel target of NRF2. Furthermore, our findings also suggest that NRF2 has opposing roles in the cell―in the activation of detoxification pathways and in promoting the development of skin disorders. |
| 注記 |
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内容記述タイプ |
Other |
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注記 |
Reproduced with permission from Environmental Health Perspectives
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| 資源タイプ |
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内容記述タイプ |
Other |
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資源タイプ |
text |
| 著者版フラグ |
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出版タイプ |
VoR |
| フォーマット |
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内容記述タイプ |
Other |
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内容記述 |
application/pdf |
| ID(XooNIps) |
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18629308 |
| 閲覧数(XooNIps) |
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| ダウンロード数(XooNIps) |
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859 |
1624.pdf (301.0 kB)
