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核の位置づけは,アミーボイドの移動を 抵抗の最小の経路に沿って促進する
Jörg Renkawitz1,2, Aglaja Kopf3, Julian Stopp3
1Institute of Science and Technology Austria (IST Austria), Klosterneuburg, Austria. joerg.renkawitz@med.uni-muenchen.de.
Nature
|April 5, 2019
まとめ
白血球は毛穴の大きさを感知して 密度の高い組織を移動し 原子核を 最小抵抗の経路を見つける 機械的な計測器として使います この戦略は細胞の移動と 組織の移動に不可欠です
科学分野:
- 細胞生物学
- バイオ物理学
- 免疫学
背景:
- 細胞は発達,免疫監視,がんの過程で 複雑な3Dマイクロ環境を移動します
- メセンキマル細胞と上皮細胞はタンパク質分解を用い,白血球のようなアミーボイド細胞は非破壊的運動を行います.
- 密度の高い組織を移動する アミーボイド細胞の仕組みは不明です
研究 の 目的:
- 白血球が 混雑した3次元マイクロ環境で 移動する方法を調べるため
- アミーボイド細胞の移動における細胞構造の役割を理解する.
- 細胞の極性と移動戦略の関係を解明する.
主な方法:
- 3Dマトリックスでの白血球移動の生細胞イメージング
- 微小管の動力学と核の位置づけの混乱
- 細胞環境の相互作用と毛穴の大きさの差別の分析
主要な成果:
- 白血球は 周囲の毛穴を積極的に採取し より大きな穴を持つ経路を選びます
- 原子核はメカニカルゲージとして機能し,孔を通過すると細胞プラズマの突起が引き戻されます.
- ダイナミックなマイクロチューブルが 収縮を調整し その破壊は細胞の断片化につながります
結論:
- 白血球は効率的な組織ナビゲーションのために"最も抵抗の少ない経路"戦略を採用します.
- 前方核の位置づけは,アミボイドの移動における毛穴の大きさの差別に不可欠です.
- 細胞の極性,特に核の位置づけは,アミーボイドの移動戦略と密接に関連しています.
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