ドロソフィラの脳の視覚センターのパターンの形成:翼のないものは,頭脳麻痺経由で,ドロス・セントラル軸を特定するために行動する
1Department of Biochemistry and Molecular Biology, Harvard University, Cambridge, Massachusetts 02138.
Cell
|August 12, 1994
まとめ
翼のない (wg) 遺伝子はデカペンタプレジック (dpp) に信号を送り,ドロソフィラの視覚センターのパターンを示します. このシグナリングカスケードは,神経細胞の発達と脳内の軸索の誘導に不可欠です.
科学分野:
- 発達生物学 発達生物学とは
- 神経科学は神経科学である.
- 遺伝学 遺伝学とは
背景:
- ドロソフィラの脳の視覚センターは,精密な細胞分裂と運命決定を通じて発達します.
- ニューロン構造を導く分子機構を理解することは,発達神経科学にとって不可欠です.
研究 の 目的:
- ドロソフィラ大脳における網膜軸索の標的構造を形成する細胞-細胞相互作用の役割を調査する.
- 視覚センターのパターニングに関与するシグナル伝達経路を解明する.
主な方法:
- 遺伝子発現パターンの分析,特に翼のない (wg) とデカペンタプレジック (dpp).
- ニューロン発育と軸索誘導におけるwgとdppの必要性を決定する機能的研究.
主要な成果:
- 翼のない (wg) 遺伝子の分泌された製品は,標的構造の組み立てに不可欠な細胞間の相互作用を媒介する.
- wgは,隣接する領域におけるデカペンタプレジック (dpp) 発現を誘発し維持する.
- wgとdppの両方のシグナリングは,ターゲットフィールドニューロンが正しい運命を採用し,軸索を投影するために必要です.
結論:
- wgとdppによって開始された,拡散性分子を含むシグナリングカスケードは,ドロソフィラの脳の視覚センターのパターンを形成します.
- このカスケードは,ニューロンの構造を確立し,適切なニューロンの接続を確保するために重要です.
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