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慣性ピコバランスは,哺乳類の細胞の急速な質量変動を明らかにする
David Martínez-Martín1, Gotthold Fläschner1, Benjamin Gaub1
1Eidgenössische Technische Hochschule (ETH) Zürich, Department of Biosystems Science and Engineering, 4058 Basel, Switzerland.
Nature
|October 27, 2017
まとめ
ATP合成や水分輸送のような 根本的なプロセスに結びついています この発見は 細胞質量調節と病気に関する 新たな洞察をもたらします
科学分野:
- 細胞生物学
- バイオ物理学
- 生理学
背景:
- 細胞のサイズ,体積,質量調節は生理学的機能にとって重要であり,代謝,増殖,遺伝子発現に関連しています.
- 細胞質量の不調は様々な病気に寄与する.
- 既存の技術は,高速な細胞動態を観察するために必要な解像度で,付着した細胞質量を追跡するために苦労しています.
研究 の 目的:
- 高解像度で粘着した細胞質を追跡するための新しい技術を開発する.
- 生理学的条件下における個々の粘着細胞の動的質量変動を調査する.
- 細胞質量変動と細胞過程の関係を探求する.
主な方法:
- 光学的に刺激されたマイクロレゾナータを用いた"ピコバランス"の開発.
- 高解像度測定 (ピコグラムの感度,ミリ秒の解像度) を長期にわたって行います.
- 細胞過程の同時観察のための光顕微鏡との互換性.
主要な成果:
- 生きた哺乳類の細胞は,細胞サイクル全体で2番目の時間スケールで1〜4%の固有の質量変動を示します.
- これらの変動はATPの合成と水輸送に関連しています.
- ワクチンウイルスによる細胞感染は,成長と細胞周期の進行を停止しますが,細胞死に至るまで質量変動は起こしません.
結論:
- 全ての細胞は 細胞サイクルの中で 素早く微妙な質量変動を 呈しています
- 開発された"ピコバランス"技術は 細胞質量動態に関する前例のない洞察を可能にします
- このアプローチは,生理学,がん,幹細胞の分化,薬剤発見における細胞質の調節を理解する上で広範な応用がある.
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