人間の細胞分裂のダイナミックなタンパク質アトラスの実験的・計算的枠組み
Yin Cai1,2, M Julius Hossain1, Jean-Karim Hériché1
1European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.
Nature
|September 12, 2018
まとめ
研究者らは,生細胞画像とミトーシスの正規モデルを統合することで,ヒト細胞分裂のダイナミックなタンパク質アトラスを作成した. このアトラスはタンパク質の相互作用とダイナミクスをマップし 細胞分裂やその他の細胞機能の研究に役立ちます
科学分野:
- 細胞生物学
- 分子生物学
- バイオ物理学
背景:
- ミトーシスのような細胞機能には 多くのタンパク質の 精密な空間時間的な調整が必要です
- タンパク質の局所化,相互作用のタイミング,構造の変化は タンパク質複合体の構成,機能,調節に不可欠です
- 生きている細胞の画像は タンパク質のダイナミクスに関する洞察を提供しますが 総合的なモデリングのための定量的なデータは依然として困難です
研究 の 目的:
- 4次元画像データを用いてヒト細胞ミトーシスの正規モデルを開発する.
- 動的3次元タンパク質濃度データをこのモデルに統合する.
- 細胞分裂中の分子相互作用を分析するためのダイナミックなタンパク質アトラスを作成する.
主な方法:
- ヒト細胞の4次元の画像データからミトス進行の正規モデルを生成した.
- 光で標識されたミトーシスタンパク質の 3D 集積濃度データ
- タンパク質のイメージングのために,光相関スペクトロスコーピーの校正顕微鏡を用いた.
主要な成果:
- ヒト細胞ミトーシスの量的な統合モデルを確立した.
- ダイナミックなタンパク質アトラスを生成し,時間とともにミトタンパク質の局所化と濃度を詳細に記述した.
- 変化する細胞境界内の動的タンパク質の相互作用を分析する方法を実証した.
結論:
- 開発されたアプローチは,細胞分裂のダイナミックなタンパク質アトラスを作成するための一般的な方法を提供します.
- このアトラスは 細胞分裂を駆動する タンパク質の局所化ネットワークの 体系的なマッピングと採掘を可能にします
- この方法論は,ミトーシス以外の細胞機能にも適用できる.
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