完ぺきな神経回路における遺伝的に標的化された光学電気生理学
Guan Cao1, Jelena Platisa, Vincent A Pieribone
1Department of Cellular and Molecular Physiology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06520, USA.
Cell
|August 13, 2013
まとめ
新しい遺伝子でコードされた光電圧インジケータ (GEVI) であるArcLightは,無傷の果物ハエの脳における電気活動を記録することに成功しました. この突破は,複雑な神経回路におけるニューロン膜ポテンシャルを同時に光学的にモニタリングすることを可能にします.
科学分野:
- 神経科学は神経科学である.
- オプティカル・イメージング
- 遺伝学 遺伝学とは
背景:
- 神経系は,情報を処理するために,統合された神経細胞の電気的活動に依存しています.
- 遺伝的にコードされた光電圧指標 (GEVIs) を使用したニューロン膜ポテンシャルの光学モニタリングは,ニューラル回路の研究に不可欠です.
- 既存のGEVIsは,多ニューロン同時記録のための,無傷の脳組織における堅固な信号検出が欠けている.
研究 の 目的:
- 完ぺきな神経回路におけるニューロン電気活動のモニタリングのためのArcLight GEVIの有効性を評価する.
- 遺伝的に標的となるニューロンにおける値以下イベントとアクションポテンシャルを検出するArcLightの能力を実証する.
- 無傷のドロソフィラの脳における膜ポテンシャルの光学測定を可能にするために.
主な方法:
- 無傷のドロソフィラフルーツフライの脳内の遺伝子的に標的化されたニューロンにArcLight GEVIを利用しました.
- ニューロンの膜ポテンシャルを同時に光学的にモニタリングした.
- 値以下の電気的イベントとアクションポテンシャルの両方を記録しました.
主要な成果:
- ArcLightは,無傷のドロソフィラの脳で強力な信号検出を証明しました.
- 遺伝子的に標的にされたニューロンにおける値以下イベントとアクションポテンシャルを成功裏に記録した.
- ニューライトの枝内の電気信号を明らかにし,詳細な回路の洞察を提供しました.
結論:
- ArcLightは,完ぺきな神経回路における膜ポテンシャルを光学的に測定するための強力なツールを提供します.
- このGEVIは,複数のニューロンにおける電気的イベントの信頼性の高い同時記録を可能にします.
- ArcLightは,Ca(2+) センサーに類似したニューロン情報処理の研究に革命をもたらす可能性があります.
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