自閉症遺伝子Ube3aと発作は,VTA Cbln1を抑制することで,社交性を損なう
Vaishnav Krishnan1, David C Stoppel1,2,3, Yi Nong1,2
1Department of Neurology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, Massachusetts 02115, USA.
Nature
|March 16, 2017
まとめ
母親の15q11-13重複は,Cbln1をダウンレギュレーションすることによって,UBE3Aを増加させ,社交性に影響を与える. 発作は自閉症に関連したこれらの欠陥を悪化させ,VTAグルタミン酸ニューロンを標的にすることで逆転させることができます.
科学分野:
- 神経遺伝学
- 自閉症スペクトル障害の研究
- シナプスの可塑性
背景:
- 母親から受け継がれる15q11−13染色体三重化は自閉症の頻繁な原因である.
- UBE3A (ユビキチンリガゼ) の遺伝子投与量増加は,これらの自閉症症例と関連しています.
- UBE3Aはトランスクリプションの調節に作用する.
研究 の 目的:
- UBE3Aが社交性とグルタマタージックシナプスに与える影響を調査する.
- UBE3A,発作,そして社会的行動の相互作用を探求する.
- UBE3A関連自閉症の潜在的治療標的を特定する.
主な方法:
- UBE3Aの投与効果を研究するために,マウスの体内の遺伝学.
- Cbln1レベルとグルタマタージックシナプス機能の評価
- ベントラル・テグメンタル領域 (VTA) のグルタマタージックニューロンの役割を調査する.
- 治療のためのウイルスベクトルベースの化学遺伝子の利用
主要な成果:
- 核のUBE3Aの増加は,マウスの社交性にとって不可欠なシナプスタンパク質Cbln1をダウンレギュレーションします.
- 発作はUBE3A値が上昇したマウスの社会性障害を悪化させる.
- このUBE3A発作の相互作用は,VTAのグルタマタージックニューロンに局限しています.
- VTAニューロンのCbln1欠失は,社交性とグルタマタージック伝播を阻害する.
結論:
- VTAのグルタマタージックニューロンの遺伝子と発作の相互作用は,Cbln1のダウンレギュレーションによって社会性を損なう.
- UBE3Aと発作は,Cbln1を通して社会的な行動に影響を与えます.
- VTAのグルタマタージックニューロンとCbln1をターゲットにすることで,自閉症に関連する社会的欠陥の治療の可能性が示されています.
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