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Related Concept Videos

Autophagy01:27

Autophagy

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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,...
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Delivery Pathways to the Lysosome01:36

Delivery Pathways to the Lysosome

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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...
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Autophagic Cell Death01:18

Autophagic Cell Death

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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...
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Translocation of Proteins into the Mitochondria01:19

Translocation of Proteins into the Mitochondria

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Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
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Phagocytosis of Apoptotic Cells01:17

Phagocytosis of Apoptotic Cells

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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...
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The Proteasome01:13

The Proteasome

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Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
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Related Experiment Video

Updated: Nov 24, 2025

Visualizing Mitophagy with Fluorescent Dyes for Mitochondria and Lysosome
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Visualizing Mitophagy with Fluorescent Dyes for Mitochondria and Lysosome

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Mitophagy and the Brain.

Natalie S Swerdlow1, Heather M Wilkins1,2,3

  • 1University of Kansas Alzheimer's Disease Center, University of Kansas, Kansas City, KS 66160, USA.

International Journal of Molecular Sciences
|December 23, 2020
PubMed
Summary
This summary is machine-generated.

Mitophagy, a cellular cleanup process, is crucial for neuronal health and preventing neurodegeneration. Its dysfunction is linked to diseases, prompting research into mitophagy-targeting therapies.

Keywords:
Alzheimer’s Diseaseagingmitochondriamitophagyneurodegeneration

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Biochemistry

Background:

  • Cellular stress contributes to neuronal loss and neurodegenerative diseases via pathways like bioenergetic failure, neuroinflammation, and proteostasis loss.
  • Cells possess compensatory mechanisms, including mitophagy, to counteract stress and prevent cell death.
  • Mitophagy, a selective form of macroautophagy, removes damaged mitochondria through lysosomal degradation.

Purpose of the Study:

  • To review mitophagy pathways and their role in neurodegeneration.
  • To discuss potential therapeutic strategies targeting mitophagy.
  • To highlight the need for further research in this area.

Main Methods:

  • Literature review of mitophagy pathways.
  • Analysis of mitophagy's role in neurodegenerative disease pathogenesis.
  • Examination of current and future therapeutic interventions.

Main Results:

  • Mitophagy dysregulation is implicated in various neurodegenerative conditions.
  • Targeting mitophagy pathways presents a promising therapeutic avenue.
  • Clinical trials are actively investigating mitophagy-based treatments.

Conclusions:

  • Mitophagy is a critical cellular process with significant implications for neurodegenerative diseases.
  • Further investigation into mitophagy mechanisms and therapeutic potential is warranted.
  • Developing effective mitophagy-modulating drugs could offer new treatments for neurodegeneration.