食中のウロリチンAは,腸内微生物媒介による自己消化活性化によって肺がんを抑制する
Jiayin Zhang1, Rong Zhang1, Lemei Sun1
1College of Enology, Northwest A&F University, Yangling, 712100, China.
The Journal of nutritional biochemistry
|August 23, 2025
まとめ
腸内微生物のメタボリートであるウロリチンAは 細胞死経路を誘発し 腸内細菌を変えることで 肺がんの成長を抑制します このメタボリットは,オートファジーと腸内微生物群を調節することで,肺がん治療に有望であることが示されています.
科学分野:
- 腫瘍学
- 微生物学
- メタボロミクス
背景:
- 腸内微生物群によって生成されるエルラギン酸の代謝物であるウロリチンA (UA) は,抗腫瘍作用の可能性を示している.
- 肺がんへの介入におけるその特定の役割とメカニズムは十分に理解されていません.
研究 の 目的:
- 肺がん細胞に対するウロリチンAの抗癌効果を調査する.
- オートファジーと腸内微生物群の調節を含む 根本的なメカニズムを解明する.
主な方法:
- 細胞増殖検査とオートファジーマーカー (LC3-II) のウェスタン・ブロッティング
- UAの影響を受ける分子経路を特定するためのトランスクリプトーム分析.
- H1975 異種移植マウスモデルを用いた in vivo 研究
- 腸内微生物群の分析と遺伝子発現との相関性のための16S rRNA配列決定.
主要な成果:
- ウロリチンAは肺がん細胞の増殖を投与量と時間によって抑制した.
- UAはPI3K/ AKT/ mTOR経路を阻害することでオートファギーを誘発した.
- In vivoでは,UAは腫瘍の成長を減らし,オートファギーを強化し,腸内微生物群を調節し,ラクトバチルスを増加させ,デスルフォビブリオを減少させた.
- 微生物群のシフトは,オートファジーに関連する遺伝子発現と相関しています.
結論:
- ウロリチンAは,インビトロとインビボの両方で,肺がんに対する有意な活性を示しています.
- 抗腫瘍効果は,オートファギーの誘導と腸内微生物群の改造によって媒介されます.
- UAは,細胞経路と腸内微生物群への二重作用により,肺がん介入の潜在的な治療薬です.
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