健康 と 病気 に 関する 老化
Shenghui He1, Norman E Sharpless1
1Departments of Medicine and Genetics, University of North Carolina School of Medicine, Chapel Hill, NC 27599-7295, USA; The Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599-7295, USA.
Cell
|June 3, 2017
まとめ
細胞の老化は 細胞の循環停止という状態で 有益な役割を果たしますが 年齢とともに蓄積されます 老化細胞を浄化することで,年齢関連の疾患や 分子老化を減らすことができます.
科学分野:
- 細胞生物学
- 老化に関する研究
- 免疫学
背景:
- 細胞のストレスは,p16INK4aの発現によって特徴づけられる超複製状態である老化を誘発する.
- 衰老は 発達,治癒,免疫,腫瘍抑制に 有益な役割を果たします
- 蓄積された老化細胞は 老化に関連した病気や炎症に寄与します
研究 の 目的:
- 細胞の老化の二重な役割を調査する
- 細胞の老化と 分子老化の関係を探るため
- 老化細胞のクリアランスの可能性を評価し,老化に関連した病理を緩和する.
主な方法:
- p16INK4a表現を含む老化マーカーの分析
- 衰老細胞の蓄積を in vivo で評価する
- 老化によって影響される生理学的および病理学的過程の評価.
- 老化マーカーに対する老化細胞クリアランスの影響を調査する.
主要な成果:
- 衰老は細胞のストレスによって活性化され,p16INK4aが関与する.
- 衰えていく細胞は 生涯にわたって 有益な影響も有害な影響も及ぼします
- 累積した老化細胞は 分子老化と炎症と相関しています
- 衰える細胞の負荷は 分子年齢を予測する
結論:
- 細胞の衰老は複雑なプロセスで 歳をとる過程には文脈に依存する役割があります
- 衰老細胞の蓄積は 老化による衰退の重要な要因です
- 衰老細胞のクリアランスは 老化と関連する病気を緩和する有望な結果を示しています
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