TACANは,機械的な痛みを感知するイオンチャネルです
Lou Beaulieu-Laroche1, Marine Christin1, Annmarie Donoghue2
1Department of Physiology and Cell Information Systems, McGill University, Montreal, QC, Canada; Alan Edwards Center for Research on Pain, McGill University, Montreal, QC, Canada.
Cell
|February 22, 2020
まとめ
科学者は機械的な痛みを感知するのに重要な新しいイオンチャネルであるTACAN (Tmem120A) を発見しました この発見は 痛みのメカニズムの理解を深め 痛みの治療の標的を 特定しています
科学分野:
- 神経科学
- 分子生物学
- 生理学
背景:
- 触覚,聴覚,痛みといった感覚に不可欠な 細胞信号に変換します
- 機械的な痛みの感覚における 特定の分子の役割は ほとんど特定されていません
研究 の 目的:
- 機械的な痛みを感知する 新しい分子成分を特定する
- 痛みの経路における特定されたイオンチャネルの機能と役割を特徴付ける.
主な方法:
- TACAN (Tmem120A) を特定するために遺伝子スクリーニングと分子生物学技術を活用した.
- チャンネル機能を評価するために,細胞系における異質発現の研究を行った.
- イオンチャネル活性を確認するために,合成脂質にTACANを浄化し,再構成する.
- ノシセプター特有の誘導ノックアウトモデルを生成し,in vivo機能を評価する.
主要な成果:
- 痛みを感知するニューロン (ノシセプター) のサブセットで表現される新しいイオンチャネルとしてTacan (Tmem120A) を特定した.
- 機械的に誘発された電流を増強することが示された.
- 溶解時に機能的なイオンチャネルを形成することが確認された.
- 熱や触覚の反応に影響を及ぼさず,痛覚受容体の機械感受性と行動反応を低下させることが示された.
結論:
- TACAN (Tmem120A) は機械的な痛みの感覚に寄与する重要なイオンチャネルです.
- この発見は 痛みの感知の分子の基礎について 新たな洞察をもたらします
- TACANは,機械的な痛み状態の管理のための潜在的な治療目標です.
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