Related Experiment Video
Updated: Jun 19, 2026
07:20
Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
Published on: January 31, 2025
Macroautophagy signaling and regulation.
Audrey Esclatine1, Magali Chaumorcel, Patrice Codogno
1INSERM U756, Université Paris-Sud 11, Faculté de Pharmacie, 5 rue Jean-Baptiste Clément, 92290 Châtenay-Malabry, France.
Current Topics in Microbiology and Immunology
|October 6, 2009
Summary
Macroautophagy, a cellular degradation process, involves signaling, autophagosome formation, and maturation. Manipulating this pathway offers therapeutic potential for diseases linked to autophagy.
Area of Science:
- Cellular Biology
- Molecular Biology
- Biochemistry
Background:
- Macroautophagy is a fundamental cellular process for degrading damaged components.
- This pathway terminates in the lysosome, involving complex molecular machinery.
- Dysregulation of macroautophagy is implicated in various human diseases.
Purpose of the Study:
- To summarize the regulatory mechanisms of macroautophagy.
- To discuss the manipulation of macroautophagy via pharmacological and genetic methods.
- To explore the therapeutic potential of modulating macroautophagy.
Main Methods:
- Review of existing literature on autophagy regulation.
- Analysis of signaling pathways upstream of autophagy.
- Examination of factors influencing autophagosome formation and maturation.
Main Results:
- Detailed overview of the multistep process of macroautophagy.
- Identification of key regulatory points in autophagy.
- Discussion of drug and genetic strategies to modulate autophagy.
Conclusions:
- Understanding macroautophagy regulation is crucial for therapeutic development.
- Targeting macroautophagy presents a promising strategy for treating diseases.
- Further research into modulating autophagy holds significant clinical potential.
Related Concept Videos
01:27Autophagy
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,...
01:18Autophagic Cell Death
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 pro-apoptotic...
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
01:36Delivery Pathways to the Lysosome
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...
01:22Cellular Injury V: Apoptosis and Autophagy
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...
03:03mTOR Signaling and Cancer Progression
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
03:03mTOR Signaling and Cancer Progression
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...