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Dvl1が欠けているマウスの社会的相互作用と感覚運動ゲーティングの異常
N Lijam1, R Paylor, M P McDonald
1Laboratory of Genetic Disease Research, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.
Cell
|September 23, 1997
まとめ
Dvl1 が欠けているマウスは,重要な社会的行動欠陥と異常な感覚運動ゲーティングを示しており,精神疾患に関連する複雑な行動においてこの遺伝子の役割を示唆しています.
科学分野:
- 神経科学は神経科学である.
- 遺伝学 遺伝学とは
- 発達生物学 発達生物学とは
背景:
- 分割された (Dvl) タンパク質は,Wnt信号伝達経路において極めて重要です.
- Dvl1は,Drosophila Dishevelled遺伝子の哺乳類の3つの同類の1つである.
- 哺乳類の複雑な行動におけるDvl1の正確な役割は,ほとんど未知のままである.
研究 の 目的:
- Dvl1.1を完全に欠けているマウスの行動現象型を調査する.
- Dvl1が社会的相互作用と感知運動ゲートに潜在的に関与する可能性を調査する.
主な方法:
- 遺伝子ターゲティングは,Dvl1欠乏したマウスを生み出すために使われました.
- 行動評価には,社会的相互作用テスト,巣作りの測定,およびセンソモーターゲーティング (プレパルス阻害) 測定が含まれていました.
主要な成果:
- Dvl1欠乏したマウスは生存可能で,肥沃で,構造的に正常であった.
- 社会的行動における重大な欠陥が観察され,その中には,ひげの剪定の変化,巣づくりの障害,群れづくりの減少,従属的な反応などが含まれていた.
- 異常なセンソモーターゲーティングが顕著で,音声と触覚の衝撃のプレパルス阻害の欠陥がありました.
結論:
- Dvl1は,マウスの複雑な社会行動と感知運動ゲーティングを調節する上で重要な役割を果たしています.
- Dvl1欠乏症のマウスは,人間の精神疾患の側面を研究するための貴重なモデルです.
- これらの発見は,Dvl1が複雑な行動の根底にある遺伝的メカニズムに関与し,社会的および感覚運動機能の共有経路を示唆しています.
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