ゴルギ後膀のエクソサイトーシスは,内皮細胞機構の構成要素によって調節される
関連する実験動画
Updated: Jun 22, 2026

04:50
Imaging FITC-dextran as a Reporter for Regulated Exocytosis
Published on: June 20, 2018
Jyoti K Jaiswal1, Victor M Rivera, Sanford M Simon
1The Rockefeller University, 1230 York Avenue, Box 304, New York, NY 10065, USA. jaiswaj@rockefeller.edu
Cell
|July 1, 2009
まとめ
ポスト・ゴルギ・ベシクルは主に,カルシウム誘発による融合ではなく,キス・アンド・ラン・エクソシトーシスを用いて,細胞表面に負荷を運ぶ. このプロセスは,内細胞機構によって調節され,膀の内容物の部分的または完全な放出を可能にします.
科学分野:
- 細胞生物学 細胞生物学
- メンブラン取引 メンブラン取引
- エキゾサイトーシス (exocytosis) とは
背景:
- ポスト・ゴルギの膀は,生物合成物質を細胞表面に運ぶ.
- これらの膀の融合を制御する分子機構は,ほとんど不明のままである.
研究 の 目的:
- ゴルギ後核融合と貨物放出のメカニズムを調査する.
- これらの膀のエクソサイトーシスの主要モードを決定する.
主な方法:
- 個々の膀から発するルミナルと膜の荷物の放出を同時に監視するシステムを開発した.
- 膀の融合現象を観察し,貨物の放出パターンを分析した.
主要な成果:
- ゴルギ後の膀エクソサイトーシスは,カルシウムによって引き起こされるものではありません.
- キス・アンド・ラン・エクソサイトーシス (キス・アンド・ラン・エクソサイトーシス) は,膜の負荷が部分的に放出されるか,全く放出されないのが特徴で,その主なモードである.
- クラトリン,アクチン,ダイナミンによって調節される早期の融合孔閉塞は,部分的な貨物放出を引き起こします.
結論:
- キス・アンド・ラン・エクソサイトーシスは,ゴルギ後膀融合の主要なメカニズムである.
- 細胞内機械の構成要素は,エクソサイトーシス中の貨物の配送の範囲を調節する.
- これらの発見は,生物合成貨物の輸送と配送における新しいメカニズムを明らかにしています.
関連する概念動画
Overview of Secretory Vesicles
Secretory vesicles, also known as dense core vesicles (DCVs), are membrane-bound vesicles that transport secretory proteins, such as hormones or neurotransmitters. Regulated secretory vesicles transport proteins from the trans-Golgi network to the exterior of the cell. Proteins present in regulated secretory vesicles are required to be rapidly exocytosed in large amounts upon a specific stimulus.
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
Golgi Apparatus
As they leave the Endoplasmic Reticulum (ER), properly folded and assembled proteins are selectively packaged into vesicles. These vesicles are transported by microtubule-based motor proteins and fuse together to form vesicular tubular clusters, subsequently arriving at the Golgi apparatus, a eukaryotic endomembrane organelle that often has a distinctive ribbon-like appearance.The Golgi apparatus is a major sorting and dispatch station for the products of the ER. Newly arriving vesicles enter...
Golgi Apparatus
Properly folded and assembled proteins are selectively packaged into vesicles that exit the ER. Motor proteins transport these vesicles to the Golgi apparatus for adding modifications that make these proteins functional at their destination.
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...
Golgi Apparatus
Properly folded and assembled proteins are selectively packaged into vesicles that exit the ER. Motor proteins transport these vesicles to the Golgi apparatus for adding modifications that make these proteins functional at their destination.
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...
Exocytosis
Exocytosis is used to release material from cells. Like other bulk transport mechanisms, exocytosis requires energy.
Exocytosis
Exocytosis is a process that releases molecules outside the cell. Like other bulk transport mechanisms, exocytosis requires energy.
Exocytosis is the opposite of endocytosis, which brings molecules inside the cell. Sometimes, the released materials are signaling molecules. For example, neurons typically use exocytosis to release neurotransmitters. Cells also use exocytosis to insert proteins such as ion channels into their cell membranes, secrete proteins for use in the extracellular matrix, or...
Exocytosis is the opposite of endocytosis, which brings molecules inside the cell. Sometimes, the released materials are signaling molecules. For example, neurons typically use exocytosis to release neurotransmitters. Cells also use exocytosis to insert proteins such as ion channels into their cell membranes, secrete proteins for use in the extracellular matrix, or...

