カデリン/カテニン複合体の脊椎間の競争によって調整された脊椎の剪定と成熟
Wen-Jie Bian1, Wan-Ying Miao2, Shun-Ji He2
1Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Cell
|August 11, 2015
まとめ
脳の発達に欠かせない 脊髄の縮は 細胞結合分子と 感覚経験によって制御されます この研究は,ベータカテニンの獲得競争が 脊椎の成熟と除去をどのように導いているかを明らかにしています.
科学分野:
- 神経科学
- 細胞生物学
- 発達生物学
背景:
- 刺激性シナプスの重要な構成要素であるデンドリティック・スピンは,神経発達の過程で動的変化を示し,剪定を含む.
- 自閉症のような神経発達障害に 結びついているため 分子機構の理解が 必要とされています
研究 の 目的:
- ネズミの体感皮質における脊椎の切り抜きと成熟を調整する分子機構を調査する.
- これらのプロセスを調節するカデリン/カテニン細胞粘着複合体と感覚経験の役割を探求する.
主な方法:
- マウスモデルと in vivo 画像技術を使用した.
- カデリン/カテニン依存的粘着を操作し,アクソンの光遺伝的刺激 (チャネルロドプシン) を使用した.
- 実験的介入に対する 脊椎の動態と運命を分析した.
主要な成果:
- 脊椎の剪定と成熟はカデリン/カテニン複合体によって調整され,感覚経験によって調節されます.
- 細胞粘着の強化や軸索刺激により,カデリン/カテニンのシグナル伝達に依存する脊椎が安定し,隣接する脊椎が消滅した.
- 脊椎間の差異的な粘着が 脊椎間の競争を示し,体内での運命を影響した.
結論:
- 活動によって誘発されるベータカテニンの競争は, dendritic spines の成熟と除去を決定する.
- この競争は神経回路の精細化過程で 脊椎の精細化を 分子的に制御する上で 極めて重要です
- 脊椎の異常に関連した神経発達障害の 分子基盤についての洞察を 提供しています
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