Related Experiment Video
Updated: May 4, 2026
08:35
In Situ Immunofluorescent Staining of Autophagy in Muscle Stem Cells
Published on: June 12, 2017
10.0K
Autophagy coupling interplay: can improve cellular repair and aging?
Deepak Chhangani1, Sachin Chinchwadkar, Amit Mishra
1Cellular and Molecular Neurobiology Unit, Indian Institute of Technology, Jodhpur, Rajasthan, India, 342011.
Molecular Neurobiology
|January 4, 2014
Summary
Cellular protein degradation relies on autophagy and the ubiquitin-proteasome system (UPS). This review explores their crosstalk, how dysfunction causes aging and neurodegeneration, and potential therapeutic strategies.
Area of Science:
- Cellular Biology
- Molecular Biology
- Biochemistry
Background:
- Protein homeostasis is vital for cellular health, maintained by synthesis and degradation pathways.
- Misfolded proteins accumulate due to impaired degradation, contributing to cellular aging and neurodegenerative diseases.
- Autophagy and the ubiquitin-proteasome system (UPS) are key degradation pathways with unclear functional interconnections.
Purpose of the Study:
- To elucidate the functional crosstalk between autophagy and UPS.
- To understand how impaired autophagy or UPS contributes to cellular homeostasis disruption.
- To explore therapeutic strategies targeting these pathways for aging and neurodegenerative diseases.
Main Methods:
- Literature review focusing on functional interconnections of autophagy and UPS.
- Analysis of how loss of function in these pathways leads to protein aggregation.
- Enumeration and discussion of autophagy inducers and their intersection points with UPS.
Main Results:
- Loss of function in autophagy or UPS leads to the accumulation of misfolded proteins.
- Dysfunctional protein degradation contributes to cellular aging and neurodegeneration.
- Autophagy inducers show potential in mitigating age-related protein aggregation.
Conclusions:
- Understanding the interplay between autophagy and UPS is crucial for cellular health.
- Targeting these degradation pathways offers potential therapeutic avenues for aging and neurodegenerative disorders.
- Further research into their multifaceted interactions may yield novel treatment strategies.
Related Concept Videos
01:22Cellular Injury V: Apoptosis and Autophagy
99
Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...
99
01:27Autophagy
5.0K
Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
5.0K
01:36Delivery Pathways to the Lysosome
7.6K
Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
7.6K
01:18Autophagic Cell Death
3.3K
Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
3.3K
01:37Mitochondria
13.4K
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
13.4K
01:46Electron Transport Chain: Complex I and II
11.9K
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
ROS generation is regulated and maintained at moderate levels necessary...
11.9K