イン・ヴィノ・ヴェリタス: 2人の姉妹の物語

Seung-Hoi Koo¹, Marc Montminy

¹Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, 300 Chunchun-dong, Jangan-gu, Suwon, 440-746, Gyeonggi-do, Korea.

Cell

|December 19, 2006

まとめ

ぶどうに含まれる化合物であるレスベラトロールは,寿命を延ばし,マウスの代謝を改善します. Sirt1酵素を活性化し,PGC-1αを脱酸化し,長寿とより良いグルコースコントロールを促進します.

科学分野:

バイオケミストリーバイオケミストリー
遺伝学遺伝学とは
老化に関する研究

背景:

レスベラトロールは,NAD (((+)) に依存したヒストン脱酸化酵素であるSirt1を活性化することが知られている.
Sirt1は細胞の調節と長寿に役割を果たしています.

研究の目的:

マウスにおける長寿を促進し,グルコースホメオスタシスを改善するレスベラトロールの役割を調査する.
レスベラトロールが効果を発揮するメカニズムを明らかにし,特にSirt1とPGC-1alphaに焦点を当てます.

主な方法:

ネズミにレスベラトロールを投与する.
寿命とグルコースホメオスタシスパラメータの測定.
Sirt1の活性とPGC-1α脱エチル化の分析.

主要な成果:

レスベラトロールはマウスの寿命を大幅に延長しました.
レスベラトロールは,グルコースホメオスタシスを改善しました.
観察された効果は,PGC-1alpha.のSirt1依存型脱エチル化によって媒介された.

結論:

レスベラトロールは長寿を促進し,マウスのグルコース代謝を高めます.
PGC-1alphaのSirt1媒介による脱エチル化は,レスベラトロールの有益な効果を支える重要なメカニズムです.

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