神経調節器の信号伝達は,人間のシナプスの膀数を双方向的に制御する

Christopher Patzke¹, Marisa M Brockmann², Jinye Dai³

¹Department of Molecular and Cellular Physiology, Stanford University School of Medicine, 265 Campus Drive, Stanford, CA 94305, USA.

Cell

|October 5, 2019

まとめ

研究者らは,神経調節剤は,シナプシン-1のリン酸化を調節することによって,ヒトの神経細胞のシナプス膀数を制御することを発見した. このメカニズムは神経伝達物質の放出とシナプス通信に影響します.

科学分野:

神経科学
細胞生物学
分子生物学

背景:

神経調節剤はGタンパク質結合受容体 (GPCRs) に作用し,細胞内循環AMP (cAMP) とCa2+レベルを変化させます.
これらのプロセスは脳の機能に不可欠であり神経学的障害にも関わっています

研究の目的:

ニューロンのシナプス通信を制御する新しいシナプス前メカニズムを発見すること
神経調節剤がシナプス膀の動態を制御する役割を明らかにする.

主な方法:

人間のニューロンにおける神経調節受容体の活性化について研究した.
シナプス胞数とシナプシン- 1のリン酸化を測定した.
シナプシン-1の役割の評価に条件付きの消去を用いた.

主要な成果:

神経調節器受容体の活性化は双方向に制御されたシナプス胞数です.
cAMP依存タンパク質キナーゼA (PKA) 媒介のシナプシン-1酸化と相関するシナプス膀の調節.
神経調節器による膀数の制御は,主にシナプシン-1に依存した.

結論:

シナプシン-1を含む新種のプレシナプスメカニズムは,シナプス胞数と神経伝達物質の放出を調節する.
非リン酸化シナプシン-1は膀を閉じ込めており,リン酸化はそれらを放出し,双方向制御を示しています.
シナプシン-1は人間のニューロンにおける神経調節信号の鍵となるエフェクタとして作用する.

キーワード:

cAMP についてグアンファシン高圧凍結EM 人間のシナプス神経調節器ノレピネフリン古い人間のニューロンセロトニンシナプシン-1 シナプスベシクル

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