相关实验视频
Updated: Jun 5, 2025

04:45
Mouse Model of Oleic Acid-Induced Acute Respiratory Distress Syndrome
Published on: June 2, 2022
2.2K
在急性肺损伤和肺纤维化时,内质网膜应激
Zhiheng Sun1,2, Wanyu He1,2, Huiwen Meng1,2
1College of Life Science, Institute of Biomedical Science, Henan Normal University, Xinxiang, Henan, China.
概括
细胞内膜网膜 (ER) 的压力通过破坏蛋白质稳态和激活细胞反应,导致肺纤维化 (PF). 了解肺损伤和纤维化中的ER压力可能会揭示新的治疗点.
科学领域:
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
- 分子病理学分子病理学
背景情况:
- 肺纤维化 (PF) 是一种进展性肺病,预后不佳,往往导致呼吸衰竭.
- 由蛋白质稳态中断引起的内质网膜 (ER) 压力与PF的发展有关.
- 急性肺损伤 (ALI) 是PF之前的一个关键事件,ER压力在其进展中发挥着作用.
研究的目的:
- 审查ER应激在急性肺损伤 (ALI) 和肺纤维化 (PF) 中的作用.
- 探索ER压力在肺细胞中激活的分子机制和信号通路.
- 要突出ER应激在PF上皮质细胞,纤维细胞和巨细胞的参与.
主要方法:
- 文献综述侧重于内质网膜 (ER) 应激和未折叠蛋白质反应 (UPR).
- 分析信号通路和分子机制,将ER压力与ALI和PF联系起来.
- 检查ER应激对参与肺纤维化关键细胞类型的影响.
主要成果:
- ER压力会破坏蛋白质平衡,导致错误折叠的蛋白质的积累.
- 展开的蛋白质反应 (UPR) 被激活以应对ER压力.
- ER压力影响肺上皮细胞,纤维细胞和巨细胞的功能和行为.
结论:
- ER压力是ALI和PF的病变发生的一个关键因素.
- 在特定的肺细胞中准ER应激通路为PF提供了潜在的治疗策略.
- 对UPR调节的进一步研究可能会为肺纤维化带来新的治疗方法.
相关概念视频
Acute Respiratory Failure-II
174
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
174
Regulation of the Unfolded Protein Response
2.4K
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
2.4K
The Unfolded Protein Response
4.4K
The ER is the hub of protein synthesis in a cell. It has robust systems to quality control protein folding and also for degradation of terminally misfolded proteins. Under normal conditions, a small proportion of misfolded proteins that cannot be salvaged need to be transported to the cytoplasm by the ER-associated degradation or ERAD pathways. However, if the ERAD cannot handle the misfolded proteins, the cell activates the unfolded protein response or UPR to adjust the protein folding...
4.4K
Acute Respiratory Failure-I
167
Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
167
Role of ER in the Secretory Pathway
5.2K
Eukaryotic cells have a special pathway that enables communication between various intracellular membrane-bound compartments and also with the extracellular environment. This pathway is termed as the secretory pathway.
Components of the secretory pathway
About a third of proteins synthesized in the cell are sorted via the secretory route. They shuffle between different compartments in membrane-bound vesicles until they reach their final destination. The main intracellular compartments involved...
Components of the secretory pathway
About a third of proteins synthesized in the cell are sorted via the secretory route. They shuffle between different compartments in membrane-bound vesicles until they reach their final destination. The main intracellular compartments involved...
5.2K
Smooth Endoplasmic Reticulum
5.6K
Smooth endoplasmic reticulum or smooth ER is a sub-organelle with specialized functions in animal cells and plant cells. It is often associated with the tubule morphology of the endoplasmic reticulum.
The ER provides optimal conditions for synthesizing steroid hormones and lipids, such as phospholipids and triglycerides. Traditionally, lipid metabolism was considered to be a smooth ER function. However, there is no direct evidence to prove that rough ER is completely excluded from lipid...
The ER provides optimal conditions for synthesizing steroid hormones and lipids, such as phospholipids and triglycerides. Traditionally, lipid metabolism was considered to be a smooth ER function. However, there is no direct evidence to prove that rough ER is completely excluded from lipid...
5.6K

