基礎前脳のグルタマタージックニューロンによる睡眠ホメオスタシス媒介体アデノシンの調節
Wanling Peng1,2, Zhaofa Wu3,4, Kun Song1,2
1Institute of Neuroscience, State Key Laboratory of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China.
Science (New York, N.Y.)
|September 5, 2020
まとめ
研究者達は 脳の活動が 睡眠の鍵となるアデノシンを 調節する方法を発見しました 基礎前脳のグルタマタージックニューロンはアデノシン放出に不可欠であり,睡眠ホメオスタシスに影響を与えます.
科学分野:
- 神経科学
- 睡眠科学
背景:
- 睡眠と覚醒はアデノシンを含むホメオスタティックメカニズムによって調節されます.
- 睡眠覚醒センターにおける神経活動によるアデノシン放出の正確な制御はよく理解されていません.
研究 の 目的:
- 基礎前脳 (BF) の神経活動がアデノシン放出にどのように影響するかを調査する.
- 活動依存のアデノシン放出と睡眠ホメオスタシスにおけるその役割に責任を負う特定のニューロン集団を決定する.
主な方法:
- 新しい遺伝子でコードされたアデノシンセンサの開発と応用.
- マウスにおけるBFニューロンのin vivo電気生理学および光遺伝的操作.
- BFのグルタマタージックニューロンの選択的消去
主要な成果:
- 活動に依存する細胞外アデノシンの急速な増加がマウスBFで観察されました.
- BFのコレリン性ニューロンとグルタマタージックニューロンの活動は,アデノシン濃度と相関しているが,グルタマタージックニューロンが主要因であった.
- BFのグルタマタージックニューロンの消去はアデノシン放出を減らし,睡眠ホメオスタシスを損なう.
結論:
- 細胞タイプ特有の神経活動,特にBFのグルタマタージックニューロンは,細胞外アデノシンレベルを動的に制御する.
- BFのグルタマタージックニューロンのこのダイナミックな制御は,睡眠ホメオスタシスの調節に重要な役割を果たします.
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