SOX17は人間の原始生殖細胞の運命を決定する重要な特異因子です
Naoko Irie1, Leehee Weinberger2, Walfred W C Tang1
1Wellcome Trust Cancer Research UK Gurdon Institute, Tennis Court Road, University of Cambridge, Cambridge CB2 1QN, UK; Department of Physiology, Development and Neuroscience, Downing Street, University of Cambridge, Cambridge CB2 3EG, UK; Wellcome Trust-Medical Research Council Stem Cell Institute, Tennis Court Road, University of Cambridge, Cambridge CB2 3EG, UK.
Cell
|December 29, 2014
まとめ
研究者は,多能幹幹細胞からヒト原始生殖細胞のような細胞 (hPGCLCs) を生み出した. SOX17とBLIMP1は重要な調節体であり,マウスの生殖細胞発達の違いを明らかにしています.
科学分野:
- 発達生物学 発達生物学について
- 幹細胞生物学 幹細胞生物学
- 生殖生物学 生殖生物学
背景:
- 原始生殖細胞 (PGC) は,生殖に不可欠なトーティポテンスの状態を開始します.
- 人間のPGC (hPGC) の仕様を規定する正確なメカニズムは,実験モデルが不足しているため,完全に理解されていません.
研究 の 目的:
- 人間のPGC仕様を研究するための処理可能な実験モデルを確立する.
- hPGCの仕様に関与する重要な分子調節体を特定する.
- 人間のPGC特異化メカニズムを,マウスなどの他の種における特異化メカニズムと比較する.
主な方法:
- ヒトのPGC型細胞 (hPGCLCs) を生殖系統に適した多能幹幹細胞から採取した細胞の仕様.
- hPGCLCsの特徴付け,胚のhPGCsと生殖細胞腫瘍と比較する.
- 細胞表面マーカーCD38を基準としてSOX17およびBLIMP1を含む主要な転写因子の分析.
主要な成果:
- 成功して生成されたhPGCLCは,胚のhPGCsと生殖線セミノーマと一致する特性を示す.
- SOX17を,hPGCLCの運命を促進する重要な調節体として特定した.
- BLIMP1の機能は,hPGCLCの特異化中に内皮および体内遺伝子発現を抑制することを実証し,マウスのPGC発達と比較して種特有の違いを強調しました.
結論:
- この研究は,ヒトの生殖系統の発達とPGCの仕様を調査するための基本的モデルを提供します.
- SOX17とBLIMP1は,ヒトとマウスのPGCの仕様において,重要な役割を果たし,潜在的に異なる役割を果たしています.
- この研究は,hPGCLCsとhPGCsの epigenetic reprogrammingについて,トーティポテンシーを達成するための将来の研究のための舞台を設定します.
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