容器発芽におけるPFKFB3駆動型糖解の役割
Katrien De Bock1, Maria Georgiadou, Sandra Schoors
1Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, Department of Oncology, University of Leuven, Leuven 3000, Belgium.
Cell
|August 6, 2013
まとめ
内皮細胞 (ECs) は,糖分解をエネルギー源として使用し,活性化剤PFKFB3は新しい血管形成に不可欠です. このグリコリート経路は,ECの増殖,移動,および血管の分岐を調節する.
科学分野:
- 細胞生物学 細胞生物学
- メタボリック・レギュレーション
- アンジオゲネシス (血管新生)
背景:
- 血管の芽生えは,発達と病気にとって不可欠です.
- Notchのような遺伝信号は,内皮細胞 (EC) の行動を調節する.
- EC駆動の血管新生における細胞代謝の役割は不明である.
研究 の 目的:
- 血管新生過程における内皮細胞機能の調節における細胞代謝,特に糖解の役割を調査する.
- 糖分解酵素PFKFB3がECの増殖,移動,および容器の芽生えに影響を与えているかどうかを判断する.
主な方法:
- ECにおけるATP生成を評価し,グリコロシスと酸化リン酸化を比較した.
- 遺伝子操作を用いて,ECにおけるPFKFB3濃度を変化させた.
- インビトロおよびインビボ発芽試験を実施しました.
- 運動突起におけるF-アクチンとPFKFB3の相互作用を調査した.
- PFKFB3とNotchのシグナリングの相互作用を調べました.
主要な成果:
- 内皮細胞は,ATP生産のために酸化性リン酸化よりも,好ましくグリコリシスを利用する.
- ECにおけるPFKFB3の喪失は,船の形成を著しく妨げました.
- PFKFB3は,ECの増殖,フィロポディア/ラメリポディアの形成,方向的移住を調節する.
- PFKFB3は,F-アクチンと分断され,細胞の動きに影響を及ぼします.
- PFKFB3の過剰発現は,Notch媒介のプロストーク活動を覆す可能性があります.
- PFKFB3欠乏症は,Notchシグナル伝達がブロックされたときに,尖端細胞の形成を妨げます.
結論:
- 糖分解は,血管新生を調節する重要な代謝経路です.
- PFKFB3は,内皮細胞の増殖,移動,および血管の芽生えの重要な代謝調節剤です.
- PFKFB3による代謝制御は,血管の分岐を制御するNotchのような遺伝経路と交差する.
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