Related Experiment Video
Updated: May 20, 2025
10:12
Author Spotlight: Exploring the Role of Unfolded Protein Response in HIV-1 Replication and Infectivity
Published on: June 14, 2024
1.2K
Advances in Endoplasmic Reticulum Stress Research-Insights from the Special Issue "Endoplasmic Reticulum Stress and
1Institute of Molecular Biology, Semmelweis University, H-1094 Budapest, Hungary.
International Journal of Molecular Sciences
|March 27, 2025
Summary
The endoplasmic reticulum (ER) maintains cell balance by managing protein folding and calcium levels. Disruptions in ER function are linked to various diseases, highlighting its critical cellular role.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- The endoplasmic reticulum (ER) is a crucial organelle for maintaining cellular homeostasis.
- It plays a vital role in protein synthesis, folding, modification, and calcium storage.
- Dysfunction of the ER is implicated in numerous human diseases.
Discussion:
- This study explores the multifaceted roles of the ER in cellular processes.
- It examines the consequences of ER stress and its contribution to disease pathogenesis.
- The findings underscore the importance of ER function for overall cell health.
Key Insights:
- The ER's ability to regulate protein folding and calcium homeostasis is essential for cell survival.
- ER stress triggers adaptive responses, but chronic stress leads to cell damage.
- Targeting ER pathways offers potential therapeutic strategies for diseases associated with ER dysfunction.
Outlook:
- Further research into ER-associated degradation (ERAD) pathways could reveal new therapeutic targets.
- Investigating the interplay between the ER and other organelles may provide a more holistic understanding of cellular health.
- Developing novel strategies to alleviate ER stress could combat diseases like neurodegenerative disorders and diabetes.
More Related Videos
10:50Molecular Modulation by Lentivirus-Delivered Specific shRNAs in Endoplasmic Reticulum Stressed Neurons
Published on: April 24, 2021
933
06:44Quantitative Analysis of Mitochondria-Associated Endoplasmic Reticulum Membrane (MAM) Stabilization in a Neural Model of Alzheimer's Disease (AD)
Published on: January 10, 2025
412
Related Concept Videos
01:17Role of ER in the Secretory Pathway
5.1K
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...
5.1K
01:39Endoplasmic Reticulum
93.4K
The Endoplasmic Reticulum (ER) in eukaryotic cells is a substantial network of interconnected membranes with diverse functions, from calcium storage to biomolecule synthesis. A primary component of the endomembrane system, the ER manufactures phospholipids critical for membrane function throughout the cell. Additionally, the two distinct regions of the ER specialize in the manufacture of specific lipids and proteins.
93.4K
01:32Export of Misfolded Proteins out of the ER
3.4K
After folding, the ER assesses the quality of secretory and membrane proteins. The correctly folded proteins are cleared by the calnexin cycle for transport to their final destination, while misfolded proteins are held back in the ER lumen. The ER chaperones attempt to unfold and refold the misfolded proteins but sometimes fail to achieve the correct native conformation. Such terminally misfolded proteins are then exported to the cytosol by ER-associated degradation or ERAD pathway for...
3.4K
01:31Regulation 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
01:37The Unfolded Protein Response
4.3K
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...
4.3K
01:43The Endoplasmic Reticulum
9.7K
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,...
9.7K