感覚ニューロン特異的なGPCR Mrgprsは,クロロクイン誘発のを媒介するの受容体である
Qin Liu1, Zongxiang Tang, Lenka Surdenikova
1The Solomon H. Snyder Department of Neuroscience, Center for Sensory Biology, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA.
Cell
|December 17, 2009
まとめ
クロロクイン誘発のは,感覚神経細胞の受容体の新しいクラスであるMrgprsによって媒介されます. これらの受容体は,かゆみの感覚を治療するための新しい治療目標を提供します.
科学分野:
- 神経科学は神経科学である.
- 分子生物学は分子生物学である.
- 薬理学 薬理学とは
背景:
- ヒスタミンに依存しないのメカニズムは十分に理解されていません.
- 抗マラリア薬であるクロロクイン (CQ) は,通常,副作用としてを引き起こします.
研究 の 目的:
- クロロクイン誘発のの原因となる分子標的を特定する.
- マス関連Gタンパク質結合受容体 (Mrgprs) がを媒介する役割を調査する.
主な方法:
- 特定のMrgpr遺伝子クラスターが欠けているノックアウトマウスを利用しました.
- ニューロンの活性化との反応を評価するために,in vivoおよびin vitro試験を実施した.
- MrgprA3.3の機能喪失と機能獲得に関する研究.
主要な成果:
- Mrgpr遺伝子を欠いたマウスは,CQに対するの反応が低下したが,ヒスタミンはなかった.
- CQは,Mrgprに依存した方法で,感覚神経細胞を直接活性化する.
- MrgprA3は,マウスのCQ誘発性の主要な受容体として特定され,ヒスタミンにも反応した.
結論:
- Mrgprsは,特にヒスタミンに依存しないかゆりに対して,重要なかゆり受容体として機能する.
- MrgprA3は,クロロクインによって引き起こされるの特定の受容体です.
- Mrgprsは,新しい抗治療の開発のための有望な治療目標を表しています.
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