非変異性発がん剤は,酵母菌の染色体内再結合を誘発する
1Department of Biology, University of Rochester, New York 14627.
Nature
|January 19, 1989
まとめ
新しい酵母ベースのスクリーニングは,エイムズ分析で見逃された環境発がん物質を検出します. この検査は,遺伝子毒性物質を特定し,公衆衛生の保護のために有害化学物質の検出を改善します.
科学分野:
- 環境科学 環境科学
- 遺伝学 遺伝学とは
- 毒理学 毒理学 毒理学
背景:
- エイムス検定を含む現在の短期試験では,ヒトおよび動物の特定の発癌物質を検出することができません.
- 既存の変異性測定では見逃されている環境発がん物質の特定にはギャップがあります.
研究 の 目的:
- 環境発がん物質を検出するための新しいスクリーニングシステムを開発し,評価する.
- アメス検定やその他の標準的な短期検査で検出できない発がん物質を特定する.
主な方法:
- 新しいスクリーニングシステムがSaccharomyces cerevisiaeで開発され,ゲノム再編成につながる染色体内再結合を検出しました.
- このシステムは,さまざまな既知の発がん物質を検出する能力によって評価されました.
主要な成果:
- 開発された酵母システムは,さまざまな発癌物質を成功裏に検出しました.
- これらの検出された発癌物質は,以前はエイムズ測定法やその他の短期的変異性検査で検出できませんでした.
結論:
- 新しい酵母ベースのスクリーニングシステムは,従来の測定では見逃された環境発がん物質を効果的に識別します.
- このシステムは,遺伝子毒性物質を検出するための有望なツールを提供し,以前は不適切な試験方法により誤って分類されていた"非遺伝子毒性発がん物質"を含む可能性があります.
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