ネズミと人間の新皮質における局所的な接続性とシナプス動態

Luke Campagnola¹, Stephanie C Seeman¹, Thomas Chartrand¹

¹Allen Institute for Brain Science, Seattle, WA, USA.

Science (New York, N.Y.)

|March 10, 2022

まとめ

マウスと人間の脳のシナプス機能に細胞の種類がどう影響するかを明らかにしましたシナプスの強さと変化性は,細胞の種類や種によって異なります.

科学分野:

神経科学
コンピュータ生物学
シナプス生理学

背景:

神経細胞の種類とそのシナプス特性との関係を理解することは脳回路の解読に不可欠です
既存のデータセットには,異なる細胞タイプと種でシナプス生理学を包括的に分析するためのスケールと詳細が欠けていることが多い.

研究の目的:

シナプス生理学的分析のための新しい,広範囲な,オープンなプラットフォームを導入します.
哺乳類の皮質における細胞タイプ,シナプス特性,および内膜回路組織の関係を支配する基本的原理を明らかにする.
マウスとヒトの皮質回路のシナプスダイナミクスを比較する

主な方法:

独特のシナプス生理分析プラットフォームの開発と応用
強度と可変性を含むシナプス特性の分析
マウスとヒトの皮質層におけるシナプス動態の比較分析.

主要な成果:

刺激性シナプスのシナプスダイナミクスは,ポストシナプス細胞サブクラスと相関する.
阻害性シナプスダイナミクスは,プレシナプス細胞サブクラスと部分的な相関関係を示し,かなりの重複を示しています.
シナプス属性は,細胞サブクラス内および細胞サブクラス間の強さと多様性を示します.
人間の刺激性-刺激性シナプスダイナミクスはマウスと異なり,層2/3でラミナルの変化を示します.

結論:

細胞タイプはシナプス特性の重要な決定因子ですが,サブクラス内に異質性があります.
シナプスの強さと変化性は,異質性の主要な軸を表しています.
皮質のシナプスダイナミクス,特に人間の皮質には種特有の有意な違いがある.
開発されたプラットフォームは将来の神経科学の研究に貴重なリソースを提供します.

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