完全なヒトX染色体のテロメア対テロメア組成
Karen H Miga1, Sergey Koren2, Arang Rhie2
1UC Santa Cruz Genomics Institute, University of California Santa Cruz, Santa Cruz, CA, USA. khmiga@ucsc.edu.
Nature
|July 15, 2020
まとめ
研究者はより完全なヒトゲノムアセンブリを作成し,現在の参照のギャップを埋めました. 完全に完成したヒトX染色体を含み 本当に完全なヒトゲノムへの道を開きます
科学分野:
- ゲノミクス
- 分子生物学
- 人間 の 遺伝子
背景:
- 現在のヒト参照ゲノム (GRCh38) は,未解決のギャップと不完全な染色体配列で,限界があります.
- 20年にわたる進歩にもかかわらず ヒトの染色体は 端から端まで完成していません
研究 の 目的:
- GRCh38の連続性を上回る ヒトゲノムアセンブリを提示する
- ゲープレスで テロメアからテロメアへの ヒト染色体の組み立てを実現するためです
- 複合的なゲノム領域を再構築し,メチル化パターンをマップする.
主な方法:
- CHM13ゲノムの 超長読取ナノポールの シーケンスを利用しました
- 品質の向上と検証のための補完的な技術を使用しました.
- ヒトのX染色体に焦点を当てて 残った隙間を埋める
主要な成果:
- GRCh38と比較して優れた連続性を持つヒトゲノムアセンブリを開発しました.
- ヒトX染色体の テロメアからテロメアへの ギャップレスアセンブリを達成しました
- セントロメリック衛星DNA配列を 再構築し,新しい配列を含む29のギャップを閉じました.
結論:
- 人類のゲノム全体を 完成させることは 今や可能なのです
- 提示されたデータと方法は,他のヒト染色体を完成させるのに役立ちます.
- 完全なX染色体の組み立てにより,複合的な繰り返しのメチル化パターンの分析が可能です.
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