神経細胞の成長コーンの崩壊と,酸化窒素によるタンパク質脂肪アシレーションの抑制
D T Hess1, S I Patterson, D S Smith
1Department of Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232.
Nature
|December 9, 1993
まとめ
酸化窒素 (NO) は,タンパク質の脂肪アシレーションに影響することによって,発達中のニューロンのニューライトの成長を阻害する. これは,NOがニューロンの発達と再構築を調節することを示唆しています.
科学分野:
- 神経科学は神経科学である.
- 細胞生物学 細胞生物学
- 発達生物学 発達生物学について
背景:
- 酸化窒素 (NO) は,成熟した中枢神経系におけるシグナル伝達分子として作用する.
- 理論的なモデルは,NOがニューロンの発達を調節する可能性があることを示唆しています.
- ニューロンの発達におけるNOの役割は完全に理解されていません.
研究 の 目的:
- ニューロンの接続の発達における酸化窒素の役割を調査する.
- 発達中のニューロンのニューライトの増殖に窒素酸化物の影響を決定する.
主な方法:
- ネズミの背根のギャングリアニューロンの体外培養.
- 酸化窒素ガスの曝露.
- ニューライトの増殖の分析.
- タンパク質脂肪アシレーションの評価.
主要な成果:
- 酸化窒素は,培養ニューロンにおけるニューライトの増殖を迅速かつ可逆的に抑制した.
- 酸化窒素への曝露は,神経細胞タンパク質のチオエステル結合の長鎖脂肪酸アシレーションを減少させた.
- 脂肪アシレーションの阻害は,システインチオルの改変によって発生する可能性があります.
結論:
- 酸化窒素は,ニューロンの発達中のニューライトの増殖を調節する役割を果たします.
- NOは,神経細胞の成長コンのタンパク質脂肪アシレーションを調節し,プロセスの改造に影響を与える可能性があります.
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