ロコモット細胞の先導ラメリポディアにグリコタンパク質を輸送する
D F Kucik1, E L Elson, M P Sheetz
1Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, Missouri 63110.
Nature
|July 27, 1989
まとめ
魚の細胞は,ラメリポディアの表面粒子の急速で活発な前向き輸送を示します. 移動する細胞で観察されたこの新しいメカニズムは,細胞の移動と粘着を促進する可能性があります.
科学分野:
- 細胞生物学 細胞生物学
- バイオフィジックス 生物物理学
- 細胞骨格のダイナミクス
背景:
- 活性な後方粒子輸送は,機関車細胞で知られている.
- 細胞表面での前方粒子の輸送は,以前報告されていませんでした.
研究 の 目的:
- 細胞表面上の前方粒子輸送の可能性を調査する.
- 魚の表皮の角球細胞における前方粒子輸送のメカニズムと影響を特徴づける.
主な方法:
- 表面の動きを追跡するためにコンカナヴァリンAコーティングの金粒子を利用しました.
- 魚の表皮ケラトサイトにおけるラメリポディアの背面上の粒子の移動を観察した.
- 細胞移動状態とサイトカラーシンD治療の効果を調査した.
主要な成果:
- ラメリポディアで素粒子の迅速で活発な前進輸送が実証されています.
- 前進輸送は,移動する細胞のみで発生し,シトカラーシンDによって抑制された.
- 輸送率は後方輸送とセル移動率を上回りました.
結論:
- この研究は,細胞表面グリコプロテインのための新しい活性前向き輸送機構を明らかにしています.
- このメカニズムは,粘着タンパク質を輸送することによって,細胞の移動に寄与する可能性がある.
- 前方への粒子の輸送は伸縮力を発生させ,細胞の動きに影響を与える可能性があります.
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