2フォトン顕微鏡のために進化した高速インジケーターを使用して,持続的な深層組織電圧記録
Zhuohe Liu1, Xiaoyu Lu2, Vincent Villette3
1Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA.
Cell
|August 19, 2022
まとめ
2フォトン顕微鏡の性能を大幅に改善し 更に深く精密な神経活動監視を可能にしました
科学分野:
- 神経科学
- バイオテクノロジー
- 顕微鏡検査
背景:
- 遺伝的にコードされた電圧指標 (GEVIs) は,セル型特異的な電圧ダイナミクスの監視に不可欠です.
- 現在のGEVIは,特に2フォトン顕微鏡で,深層組織の神経記録を阻害する性能の限界を示しています.
研究 の 目的:
- 2フォトン顕微鏡で性能を向上させるためにGEVIを最適化します.
- 速度,明るさ,感度,光安定性を改善した新しいGEVI,JEDI-2Pを開発する.
主な方法:
- GEVIの最適化のための多パラメータ高通量プラットフォームの開発.
- JEDI-2Pの識別と特徴付けのためのプラットフォームの適用.
- ドロソフィラ,マウスの網膜,そして目覚めたマウスのJEDI-2Pのin vivoおよびex vivo検証.
主要な成果:
- JEDI-2Pは,既存の指標と比較して優れた速度,明るさ,感度,および光安定性を示しています.
- ドロソフィラ内ニューロンとマウスの網膜のアマクリン細胞で,光誘発反応が報告されました.
- 覚醒したマウスの個々の皮質ニューロンの長期の光学記録を,共振スキャンとULoVE顕微鏡を用いて可能にしました.
- JEDI-2PによるULoVE記録は,深さ400μm以上のピークを検出し,神経電圧の相関を明らかにした.
結論:
- JEDI-2Pは,2光子顕微鏡のためのGEVIの重要な進歩を表しています.
- このインジケータは,深部神経回路における高解像度の電圧イメージングを容易にする.
- JEDI-2Pは,神経回路の機能を研究するための新しい道を開きます.
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