ヒッポの経路活動は,肝細胞の運命を左右する
Dean Yimlamai1, Constantina Christodoulou2, Giorgio G Galli2
1The Stem Cell Program, Boston Children's Hospital, Boston, MA 02115, USA; Division of Gastroenterology and Nutrition, Department of Medicine, Boston Children's Hospital, Boston, MA 02115, USA.
Cell
|June 7, 2014
まとめ
ヒッポシグナル伝達経路は,成熟した肝細胞の同一性を維持する. それを無効化すると,成人の肝細胞が原始細胞のような細胞に戻り,可塑性と肝臓再生への影響を明らかにします.
科学分野:
- 細胞生物学 細胞生物学
- 発達生物学 発達生物学とは
- 肝臓病理学 肝臓病理学
背景:
- ヒッポシグナル伝達経路は,臓器のサイズと細胞増殖を調節する.
- 細胞の運命を決定する,特に肝細胞の制御におけるその役割は,ほとんど未知のままである.
研究 の 目的:
- ヘパトサイトの分化と細胞運命を維持するヒッポシグナル伝達経路の機能を調査する.
- 成熟した肝細胞が原始状態に戻る可能性を調査する.
主な方法:
- 血統をたどる トレーシング
- クローナル分析 クローン分析
- In vivo オーガノイド培養で培養する.
- ヒッポの信号伝達経路の急性無効化
主要な成果:
- ヒッポ経路の活動は,成人肝細胞の分化状態を維持するために不可欠です.
- ヒッポ経路の急性無活性化 in vivoは,肝細胞をプロジェンター型の細胞に無差別化することを効率的に誘導します.
- これらの誘発性原始細胞は,自己再生と単細胞移植の能力を発揮します.
- NOTCHシグナル伝達経路は,ヒッポの経路トランスデューサーであるYAPの主要な下流エフェクタとして特定されました.
結論:
- Hippo/YAPシグナリングは,肝細胞の運命を制御する上で重要な役割を果たします.
- 成熟した肝細胞は,有意な現象性可塑性を持ち,親細胞に分化することができる.
- これらの発見は,肝臓の再生メカニズムと潜在的な治療戦略に関する新しい洞察を提供します.
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