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概日リズムとマルチオミクスが腸肝軸における高脂血症の調節異常を明らかにする
Jinxing Su1, Shangquan Jiang1, Min Chu1
1Center for Stem Cell and Translational Medicine, School of Life Sciences and Medical Engineering, Anhui University, Hefei 230601, Anhui, China; Traditional Chinese Medicine Research Centre, School of Life Sciences and Medical Engineering, Anhui University, Hefei 230601, Anhui, China.
Genomics
|January 10, 2026
まとめ
高脂肪食は体内時計を破壊し、腸内細菌叢と肝臓の遺伝子発現を変化させることで高脂血症を引き起こす。この研究は、代謝疾患における腸肝軸の役割を強調し、新しい治療法の標的を提供する。
科学分野:
- 概日生物学と代謝疾患の研究。
- 食事、概日リズム、および生理学的プロセス間の相互作用の調査。
- 代謝の健康における腸肝軸の探求。
背景:
- 慢性的な高脂肪食摂取は、肥満および高脂血症と関連しています。
- 概日リズムは、重要な心血管および代謝機能を調節します。
- 食事パターンの破壊は、体内時計の脱同期を引き起こす可能性があります。
研究 の 目的:
- 高脂血症マウスモデルにおける肝臓と腸の日周リズムの影響を調査すること。
- 概日代謝調節に関与する主要な遺伝子と微生物分類群を同定すること。
- 食事誘発性代謝調節不全における腸肝軸の役割を解明すること。
主な方法:
- 肝臓および腸のトランスクリプトーム、メタゲノム、メタボロームプロファイリング。
- 日周リズムの影響を研究するために高脂血症マウスモデルを使用しました。
- 遺伝子発現、腸内細菌叢の組成、および代謝物質プロファイルを分析しました。
主要な成果:
- 腸肝軸を介して代謝物質を調節する主要な肝臓の概日時計調節遺伝子(例:CD36、Hmgcs1)を同定しました。
- 腸内消化と代謝を調整する腸内細菌叢の日周リズムを観察しました。
- 高脂血症が肝臓と腸の概日調節を破壊し、脂質代謝に影響を与えることを実証しました。
結論:
- 高脂肪食は異常な脂質代謝遺伝子発現を引き起こし、腸内細菌叢の概日リズムを乱します。
- 代謝物質は、腸肝軸を介して肝臓の脂質代謝遺伝子を調節するシグナル分子として作用します。
- リズムのある代謝物質分泌の喪失は、概日遺伝子発現を破壊し、高脂血症に寄与します。
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