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Shank3発現の成人の回復は,選択的な自閉症のような現象型を救う
Yuan Mei1, Patricia Monteiro1,2,3, Yang Zhou1
1McGovern Institute for Brain Research, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Nature
|February 18, 2016
まとめ
成人マウスのShank3遺伝子を再活性化することで,シナプス機能が改善され,自閉症に関連するいくつかの行動が回復し,神経発達障害における成人の脳の可塑性の可能性を示唆した.
科学分野:
- 神経科学
- 遺伝学
- 発達生物学
背景:
- 自閉症スペクトル障害 (ASD) は神経発達障害で 3歳前に診断される.
- Shank3遺伝子はシナプス構造と機能において重要な役割を果たし,その障害はASDに関連しています.
- 成人のASD病変の可逆性を調査することは,治療の開発に不可欠です.
研究 の 目的:
- 成人マウスの発達中のShank3の役割と再活性化の可能性を調査する.
- 成人期にShank3の発現を回復させることで,Shank3欠乏症に関連したシナプスおよび行動的欠陥を改善できるかどうかを判断する.
主な方法:
- 新しいShank3条件付きノックインマウスモデルの生成.
- 成人マウスのShank3遺伝子の再発
- シナプスタンパク質の組成,脊椎の密度,神経機能の評価
- 行動テストは 社会的交流,繰り返しの行動,不安,運動調整を評価するものです
主要な成果:
- 成人マウスのShank3の再発は,シナプスタンパク質の組成と脊椎の密度の改善につながった.
- シャンク3再発の後に神経機能が強化された.
- 社会的交流の欠陥や 繰り返しの美容行為が 部分的に回復しました
- 成人期には不安や運動調整の欠陥が回復しなかった.
結論:
- 発達後のShank3発現は,大人の脳の神経機能に有意な影響を及ぼします.
- これらの発見は,成人の脳における一定程度の継続的な可塑性を示し,Shank3に関連する障害に対する潜在的な治療の機会を提供します.
- いくつかの欠陥は回復可能ですが,他の欠陥には早期の介入が必要であり,神経発達障害の複雑さを強調しています.
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