関連する実験動画
Updated: Jul 10, 2026

10:24
Visualization of Endoplasmic Reticulum Localized mRNAs in Mammalian Cells
Published on: December 17, 2012
まとめ
特定の光染料は,細胞内のエンドプラズマの網膜 (ER) と呼ばれる網状の構造を明らかにします. この ER 構造は,この ER 構造です.
科学分野:
- 細胞生物学 細胞生物学
- 顕微鏡による顕微鏡検査
- 分子生物学は分子生物学である.
背景:
- 光染料は,ミトコンドリアのような細胞器官を視覚化するために一般的に使用されます.
- 以前の研究では,オルガネル特異的なラベリングのために光染料を使用しています.
研究 の 目的:
- 高い濃度で特定の光染料の局所化を調査する.
- 顕微鏡技術を用いて,新たに観察された細胞構造を特定し,特徴づけること.
主な方法:
- 生体細胞と固定細胞 (グルタラルデヒド,パルマンガン酸カリウム) に光顕微鏡を用いた.
- フェーズコントラスト顕微鏡とホールマウント電子顕微鏡を使用しています.
- 特定された構造物の様々な化学物質に対する感受性をテストした.
主要な成果:
- より高い濃度では,特定の光染料は細胞内の連続した網状の構造をマークします.
- 主に管状のこの網状構造は,複数の顕微鏡法を使用して可視化されました.
- 構造の組織は,コルキシンとロテノンに敏感であることが判明したが,他の試験剤には敏感ではなかった.
結論:
- 観察された網状構造は,おそらくエンドプラズマ網膜 (ER) である.
- ERの組織は動的に調節され,特定の細胞効果因子に対して敏感です.
- この発見は,ERを視覚化し,その動態を研究するための新しい方法を提供します.
関連する概念動画
Endoplasmic Reticulum
Endoplasmic ReticulumThe endoplasmic reticulum (ER) is an extensive network of membranous sacs and tubules in eukaryotic cells, continuous with the outer membrane of the nucleus. This structural continuity integrates nuclear and cytoplasmic processes and facilitates efficient intracellular transport. This allows mRNA to move directly from the nucleus to ribosomes for efficient protein synthesis. As a result, the ER serves as a central site for the synthesis, processing, and distribution of...
The Endoplasmic Reticulum
The endoplasmic reticulum or ER makes up for more than half of the membranes in a cell and accounts for 10% of total cell volume. It is also the primary protein and lipid synthesis factory for most cell organelles, such as the Golgi apparatus, lysosomes, secretory vesicles, and the plasma membrane. Despite being the most extensive and functionally complex subcellular organelle, ER was the last to be discovered. After years of deliberation, Keith Porter and George Palade in the year 1954,...
Protein Dynamics in Living Cells
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Immunogold Electron Microscopy
Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and tissues. The procedure provides insights into the distribution and quantification of protein under different stimulation conditions offering clues about their functions. Conjugating highly electron-dense gold particles with primary or secondary antibodies allow antigen detection on and within cells, with high resolution and specificity.

