妊娠中のフッ化物曝露は,女性の子孫のSIRT1-ATF4軸経由で卵巣機能を損なう
Yannan Gu1, Yajun Shi2, Bin Wei3
1Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, China; Department of Obstetrics and Gynecology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, China; Department of Gynecology, Affiliated Matern & Child Care Hospital of Nantong University, Nantong, Jiangsu 226000, China.
Ecotoxicology and environmental safety
|February 13, 2026
まとめ
フッ化ナトリウム (NaF) の産前曝露は,卵泡の発達を妨害し,アポトーシスを促進することによって,雌の子孫の卵巣の準備を害します. レスベラトロールでSIRT1-ATF4シグナル伝達をターゲットにすることは,フッ素誘発性卵巣機能障害に対する潜在的な治療戦略を提供します.
科学分野:
- 繁殖性毒性学について
- 環境の健康 環境の健康
- 分子生物学は分子生物学である.
背景:
- 妊婦が妊娠中に環境要因に曝露することは,子孫の生殖健康に悪影響を及ぼす可能性があります.
- 産前フッ化物曝露は卵巣機能不全を引き起こす可能性があるが,そのメカニズムは完全に理解されていない.
研究 の 目的:
- 産前ナトリウムフッ化物 (NaF) の被曝が女性の子孫の卵巣機能に与える影響を調査する.
- フッ化物誘発性卵巣毒性の基礎にある分子機構を解明する.
- レスベラトロールを潜在的な治療的介入として評価する.
主な方法:
- ネズミのモデル (C57BL/6J) で,産前NaF暴露 (100 mg/L) を確立しました.
- 評価された卵巣の準備,卵泡の成熟,子孫におけるアポトーシス.
- ATF4,SIRT1,CHOP,BAX/BCL-2経路,およびH3K9acレベルを含む分子分析を行った.
- KGN細胞とレスベラトロール治療をメカニズム研究と治療的検証のために利用しました.
主要な成果:
- 産前NaF曝露は,卵巣の貯蔵量が減少し,卵泡の成熟が妨げられ,雌の子孫の卵泡縮が増加しました.
- NaF暴露はATF4とCHOPを上昇させ,SIRT1を低下させ,卵巣におけるBAX/BCL-2アポプトシス経路を活性化させた.
- NaFはATF4プロモーターでH3K9acを増加させ,SIRT1媒介の表遺伝子調節を示した.
- レスベラトロール治療はSIRT1の調節を向上させ,卵巣機能不全を緩和し,花粉細胞のアポトーシスを減少させた.
結論:
- SIRT1-ATF4シグナリングは,フッ化物による卵巣毒性の中心的なメカニズムです.
- 産前フッ化物曝露は,SIRT1依存のATF4調節によって媒介されるアポトーシスによる卵巣毒性を引き起こします.
- レスベラトロールは,フッ化物曝露によって引き起こされる環境性卵巣機能障害を緩和する治療的可能性を示しています.
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