関連する実験動画
Updated: Jan 10, 2026
01:24
Nephrotic Syndrome I : Introduction
Published on: June 19, 2025
476
アデノウイルスによる細胞タンパク質合成の抑制には,キャップ結合タンパク質の不活性化が含まれます
1Kaplan Cancer Center, New York University Medical Center, New York 10016.
Cell
|April 19, 1991
まとめ
アデノウイルス感染症は,キャップ結合タンパク質 (CBP) 複合体を不活性化することによって宿主タンパク質合成を抑制し,ウイルスのmRNA翻訳を可能にします. このメカニズムは,CBP複合体を劣化させるポリオウイルスとは異なる.
科学分野:
- 分子生物学は分子生物学である.
- ウイルス学 ウイルス学 ウイルス学
- 細胞生物学 細胞生物学
背景:
- アデノウイルス (Ad) 感染症は,その後期段階で細胞タンパク質合成を阻害します.
- この抑制は,宿主細胞サイクル進行を制御するメカニズムと関連しています.
研究 の 目的:
- Adが宿主タンパク質合成を抑制するメカニズムを解明する.
- 広告がウイルス mRNA 翻訳を選択的に強化する方法を理解する.
主な方法:
- アドメディエートされた翻訳阻害におけるキャップ結合タンパク質 (CBP) 複合体の役割を調査した.
- Ad感染中にCBP複合体のリン酸化状態を分析した.
- Adのメカニズムとポリオウイルス誘発の翻訳阻害を比較した.
主要な成果:
- 広告感染は,ウイルス媒介の低リン酸化とCBP複合体の不活性化につながる.
- 不活性化CBP複合体は,キャップ依存のmRNA翻訳のために必要であり,それによって宿主タンパク質合成を阻害する.
- Late Ad mRNAは,CBP複合体の活性から独立して翻訳することができる.
- ポリオウイルスは,CBP複合体をタンパク質分解的に分解し,Adは機能的にそれを無効化する.
結論:
- アデノウイルスは,CBP複合体の不活性化によってタンパク質合成を抑制する細胞メカニズムを利用します.
- この戦略により,Adは宿主タンパク質合成を抑制し,自身の遅いmRNAの翻訳を向上させることができます.
- AdによるCBP複合体の機能不活性化は,ポリオウイルスのタンパク質分解と異なる.
関連する概念動画
Nephrotic Syndrome I : Introduction
476
Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
476
Glomerular Filtration
4.7K
The filtration membrane in the renal system is a highly specialized structure essential for filtering blood. It consists of glomerular capillaries and podocytes, forming a selective barrier that permits the passage of water and small solutes while restricting most plasma proteins and blood cells.
Components of the Filtration Membrane
The filtration process involves three key layers: the glomerular endothelial cells, the basement membrane, and the podocyte-formed filtration slits.
Components of the Filtration Membrane
The filtration process involves three key layers: the glomerular endothelial cells, the basement membrane, and the podocyte-formed filtration slits.
4.7K
Renal Corpuscle
6.9K
The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
6.9K
Confocal Fluorescence Microscopy
19.9K
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
19.9K
Nephrons
6.3K
The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma...
6.3K
Glomerular Filtration Rate and its Regulation
5.0K
The Glomerular Filtration Rate (GFR) is a measure of kidney function, reflecting the volume of filtrate formed per minute in the kidneys. On average, GFR is approximately 125 mL/min in males and 105 mL/min in females. Maintaining a relatively constant GFR is essential for the kidneys to effectively regulate body fluid homeostasis and maintain extracellular stability.
GFR regulation involves two primary intrinsic controls: the myogenic and tubuloglomerular feedback mechanisms.
The myogenic...
GFR regulation involves two primary intrinsic controls: the myogenic and tubuloglomerular feedback mechanisms.
The myogenic...
5.0K