p16Ink4a陽性老化細胞のクリアランスは,老化に関連した疾患を遅らせます
Darren J Baker1, Tobias Wijshake, Tamar Tchkonia
1Department of Pediatric and Adolescent Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA.
Nature
|November 4, 2011
まとめ
細胞衰老は老化の特徴であり,老化に関連した疾患を誘発する. ネズミの老化細胞 (p16Ink4a陽性) を除去することで,老化現象を遅らせ,健康期間を延長し,老化における老化の因果的な役割を示している.
科学分野:
- ゲロントロジーはゲロントロジーの学科です.
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
背景:
- 高齢は慢性疾患や機能低下の主な危険因子です.
- 細胞衰老は,不可逆的な細胞循環停止の状態であり,老化に関与しています.
- 衰老細胞は年齢とともに蓄積し,組織機能に障害を与える可能性があります.
研究 の 目的:
- 年齢関連の機能障害における細胞老化の因果的役割を調査する.
- 衰老細胞の除去によって,老化現象を予防または逆転させることができるかどうかを判断する.
- 健康期間延長のための老化細胞を標的とした治療の可能性を評価する.
主な方法:
- p16Ink4a陽性老化細胞の誘導性除去のための新しいトランスゲン (INK-ATTAC) を開発した.
- INK-ATTACシステムをテストするために,プロゲロイドマウスモデル (BubR1) を利用しました.
- 衰老細胞のクリアランスを誘発するために生涯にわたって投与される薬剤,または人生の終わりに.
主要な成果:
- INK-ATTACは,薬物治療を受けたマウスのp16Ink4a陽性老化細胞を成功裏に除去しました.
- 衰老細胞の生涯の除去は,脂肪組織,骨格筋,眼などの組織における年齢関連の病理を遅らせました.
- 衰老細胞の終末期クリアランスは,既にある年齢関連の疾患の進行を弱めた.
結論:
- 細胞老化は,年齢に関連する現象型の発達に因果的に関与しています.
- 老化細胞の標的を絞った除去は,年齢に関連する組織機能障害を予防または遅らせることができます.
- 衰老細胞の除去は,健康の寿命を延ばし,老化に関連する病気を軽減する有望な結果をもたらします.
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