NOTCH1とNRG1による心臓ゼリーダイナミクスの制御は,トラベキュレーションのビルプランを定義します
Gonzalo Del Monte-Nieto1,2, Mirana Ramialison3, Arne A S Adam4
1Developmental and Stem Cell Biology Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia. g.delmonte@victorchang.edu.au.
Nature
|May 11, 2018
まとめ
心臓の発達に不可欠な心室内経路形成は,細胞外マトリックス (ECM) の分解を促進するNOTCH1と,ECMの合成を促進するニューレグリン (NRG) を含む. この研究はこれらの経路をモデル化しています
科学分野:
- 心血管生物学
- 発達生物学
- 分子心臓科
背景:
- 心臓の機能に不可欠なスポンジ状の心筋細胞のネットワークを形成します
- トラベキュレーションの欠陥は胚死亡または非収縮性心筋病 (NCC) を引き起こす.
- トラベキュレーションにおける初期の分子調節と細胞外マトリックス (ECM) ダイナミクスは,ほとんど未調査のままである.
研究 の 目的:
- 初期のマウス心臓の トラベキュレーションをモデル化し ダイナミックな細胞行動と ECM リモデリングを統合する
- トラベキュラー形成とその相互接続を制御するシグナル伝達経路を解明する.
- 先天性心臓病の 病理生理学に関する新しい洞察を明らかにします 特にNCCについてです
主な方法:
- 内心と心筋の細胞動態を統合したマウスモデルの開発.
- トラベキュレーション中の細胞外マトリックス (ECM) の再構成分析.
- NOTCH1とニューレグリン (NRG) 信号伝達経路との間にあるエピスタティックな関係を調査する.
主要な成果:
- NOTCH1のシグナリングは,心内投影形成のためのECMの分解を促進します.
- NRG1のシグナリングは,心筋 ECMの合成を刺激し,気管管の再配置と成長を促します.
- NRG1はVegfaを制御し,トラベーカルの構造を形作るために敵対的に作用する経路を結ぶ.
結論:
- NOTCH1とNRG1のシグナル伝達経路は,管構造を調節するために敵対的に作用する.
- この研究は トラベキュレーションの新しいモデルを提供し 重要な分子相互作用を明らかにしています
- ECMのダイナミクスとシグナル伝達に関する洞察は,先天性心疾患のメカニズムに関する新しい視点を提供します.
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