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高階染色体間ハブ 核における3Dゲノム組織
Sofia A Quinodoz1, Noah Ollikainen1, Barbara Tabak2
1Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
Cell
|June 12, 2018
まとめ
研究者は3Dゲノムをマッピングするための新しい方法,タグ拡張による相互作用の分割プール認識 (SPRITE) を開発しました. SPRITEは 核体が DNAの相互作用を 長い距離でどのように組織するかを明らかにし ゲノム包装の理解を向上させました
科学分野:
- ゲノミクス
- 分子生物学
- 細胞生物学
背景:
- ユカリオットのゲノムは 核内で3Dで編成されています
- 近接結合のような既存の方法は,核体が関与する長距離の相互作用と構造を検出する上で限界があります.
- ゲノム組織に関する現在の理解は,これらの限界のために不完全である.
研究 の 目的:
- 高次クロマチンの相互作用の全ゲノム検出のための新しい方法を開発する.
- 大規模なゲノム組織を捕捉する近接結合の限界を克服する.
- ゲノム構造における核体の役割を調査する.
主な方法:
- タグ拡張による相互作用の分割プール認識 (SPRITE) の開発.
- ゲノム全体の相互作用マッピングのためのSPRITEの適用.
- SPRITEの結果と既存の近接結合データとの比較
主要な成果:
- SPRITEは,近接結合で特定された既知のゲノム構造を成功裏に再現しました.
- SPRITEは新しい,長距離の染色体間の相互作用を検出しました.
- 核と核の斑点の周りに組織された2つの主要な染色体間の相互作用のハブを特定しました.
- これらの核体に相対的に優越性のあるゲノム組織を示した.
結論:
- SPRITEは3Dゲノム組織を 研究するための強力な新しい方法です
- 核体は染色体間の相互作用を組織するための重要なハブとして機能する.
- 原子核が核の全体的なDNA包装を形成するグローバルモデルが提案されています.
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