Mechanisms of Selective Autophagy
1College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China.
Advances in Experimental Medicine and Biology
|July 14, 2021
Summary
Selective autophagy precisely targets cellular components for degradation. Understanding cargo-receptor interactions is key to unlocking the mechanisms of this vital process for disease treatment.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Autophagy is a cellular degradation process essential for nutrient and energy supply during starvation.
- Selective autophagy specifically targets cellular components for degradation via a lysosome-dependent pathway.
- Receptor proteins are crucial for identifying and guiding specific cargo to the core autophagy machinery.
Purpose of the Study:
- To explore the mechanisms of cargo recognition in selective autophagy.
- To investigate the interactions between cargo and receptor proteins.
- To elucidate the precise functions of receptor protein complexes in selective autophagy subtypes.
Main Methods:
- Analysis of receptor protein complexes involved in selective autophagy.
- Investigating the role of ubiquitination and phosphorylation in modulating cargo-receptor affinity.
- Review of current literature on selective autophagy mechanisms.
Main Results:
- Selective autophagy relies on specific cargo recognition mediated by receptor proteins.
- Ubiquitination and phosphorylation are key post-translational modifications influencing cargo-receptor interactions.
- While core processes are known, precise cargo recognition mechanisms remain largely unelucidated.
Conclusions:
- Understanding cargo-receptor interactions is fundamental to deciphering selective autophagy.
- Further mechanistic insights into selective autophagy are vital for disease treatment and drug development.
- Targeting selective autophagy pathways holds therapeutic potential.
Related Concept Videos
Autophagy
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
Delivery Pathways to the Lysosome
8.2K
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...
8.2K
Autophagic Cell Death
3.7K
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...
3.7K
Phagocytosis of Apoptotic Cells
4.1K
Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or immature dendritic cells. Non-professional phagocytes such as epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes.
Normal cells contain receptors that prevent them from being recognized...
Normal cells contain receptors that prevent them from being recognized...
4.1K
Regulated Protein Degradation
8.0K
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
8.0K
Maturation of Endosomes
4.9K
The early endosome containing internalized molecules matures through transformations in its location, morphology, intraluminal pH, and membrane protein composition. Together, these changes result in a more acidic late endosome that contains multiple intraluminal vesicles; therefore, the late endosome is also called a multivesicular body (MVB).
Changes in location
The maturing endosome moves along microtubules from the periphery of the cell towards the perinuclear region. This movement of the...
Changes in location
The maturing endosome moves along microtubules from the periphery of the cell towards the perinuclear region. This movement of the...
4.9K


