ヒトのESとiPSの細胞変異の参照マップは,多能細胞系の高通量特徴を可能にします
Christoph Bock1, Evangelos Kiskinis, Griet Verstappen
1Broad Institute, Cambridge, MA 02142, USA.
Cell
|February 8, 2011
まとめ
人間の多能幹細胞 (ESおよびiPS細胞) は,研究有用性に影響を与える重要な変化を示しています. この研究は,彼らの表遺伝学と遺伝子発現をマッピングして,差別化の効率を予測し,特徴付けスコアカードを作成します.
科学分野:
- 幹細胞生物学 幹細胞生物学とは
- エピジェネティクス エピジェネティクス
- ゲノミクスゲノミクスとは
背景:
- 胚性幹細胞 (ES) や誘発性多能幹細胞 (iPS) を含むヒト多能幹細胞は,疾患に関連する細胞種を生成する見込みがある.
- 異なる多能細胞系の間には大きな変動があり,研究用途と臨床安全性に影響を及ぼす可能性があります.
- 細胞系特異性の違いをより深く理解することは,信頼性の高い翻訳研究に不可欠です.
研究 の 目的:
- 人間のESおよびiPS細胞系におけるDNAメチル化および遺伝子発現の包括的な全ゲノム参照マップを確立する.
- ES細胞とiPS細胞の表遺伝的および転写的類似性と違いを評価する.
- プラリポテント細胞系のインビトロ分化傾向を予測する方法を開発する.
主な方法:
- 20人のヒトESと12人のヒトiPS細胞系のための全ゲノムにわたるDNAメチル化と遺伝子発現の参照マップの生成.
- インビトロ分化試験では,これらの細胞系の分化可能性を測定します.
- 生体情報分析は,表遺伝的および転写的プロフィールを比較し,それらを差異化効率と相関させます.
主要な成果:
- ヒトの多能幹幹細胞の大きなコホートについて,参照のエピジェノミクスとトランスクリプトミクスマップを確立した.
- ES 細胞と iPS 細胞の類似性を評価するためのこれらのマップの有用性を実証しました.
- 分子プロファイルに基づいて個々の細胞系統の分化効率の予測モデルを開発した.
結論:
- 開発されたリソースは,多能細胞系を包括的に特徴付けるためのスコアカードを提供します.
- 細胞系特異的な表遺伝子および転写の景観を理解することは,その分化可能性を予測し,最適化するための鍵です.
- この研究は,生物医学研究および翻訳的応用におけるヒトESおよびiPS細胞の信頼性の高い使用を促進します.
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