プラリポテンシーの遺伝的および表遺伝的調節因子
M Azim Surani1, Katsuhiko Hayashi, Petra Hajkova
1Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QN, UK. as10021@mole.bio.cam.ac.uk
Cell
|February 27, 2007
まとめ
エピジェネティックメカニズムは,ジゴットから多能細胞,そしてそれ以上の細胞の発達を導く. これらのプロセスを理解することで,成人体細胞から多能細胞の直接的な生成が可能になる.
科学分野:
- 発達生物学 発達生物学とは
- エピジェネティクス エピジェネティクス
- 幹細胞生物学 幹細胞生物学
背景:
- 細胞の発達には,精密な遺伝的および表遺伝的調節が含まれています.
- 初期の胚に見られる多能細胞は,様々な細胞タイプに微分化することができる.
- エピジェネティック・モディフィケーションは,細胞の運命を決定し,再プログラムするために極めて重要です.
研究 の 目的:
- 哺乳類の発達初期における細胞移行を制御する遺伝的および表遺伝的メカニズムを解明する.
- プラリポテンシーを支えるエピジェネティック状態を理解するために,in vitro.
- ソマティック細胞からトーティポテンシーを再生し,プラリポテンツ細胞を作成する可能性を調査する.
主な方法:
- ネズミのブラストシストにおける遺伝的および表遺伝的調節体の分析.
- プラリポテント細胞のインビトロ増殖.
- 胚芽細胞の発達と体細胞の分化過程における表遺伝的変化の調査.
主要な成果:
- 微分化と生殖細胞の特異性を制御する重要なエピジェネティック・モディファイヤーを特定した.
- 生殖細胞の発達には,体プログラム抑制と表遺伝的消去が必要であることが示された.
- 胚細胞のトーティポテンシー再生中に多能性遺伝子の再発現を示した.
結論:
- エピジェネティック再プログラミングは,生殖細胞の発達と完全能力に不可欠です.
- これらのメカニズムに関する知識は,体細胞を多能細胞に直接再プログラムする可能性を高めます.
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