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Related Concept Videos

Mitochondria01:37

Mitochondria

15.6K
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,...
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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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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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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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Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

15.3K
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...
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Updated: Oct 10, 2025

In Vitro and In Vivo Detection of Mitophagy in Human Cells, C. Elegans, and Mice
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In Vitro and In Vivo Detection of Mitophagy in Human Cells, C. Elegans, and Mice

Published on: November 22, 2017

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Mitophagy in aging and longevity.

Jing Guo1, Wei-Chung Chiang1

  • 1Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Taipei, Taiwan.

IUBMB Life
|December 10, 2021
PubMed
Summary
This summary is machine-generated.

Mitophagy, the cell's cleanup of damaged mitochondria, is crucial for health and preventing diseases like Parkinson's and Alzheimer's. This process is vital for longevity and healthy aging.

Keywords:
aginglongevitymitophagy

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Sensitive Measurement of Mitophagy by Flow Cytometry Using the pH-dependent Fluorescent Reporter mt-Keima
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Visualizing Mitophagy with Fluorescent Dyes for Mitochondria and Lysosome

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Area of Science:

  • Cellular Biology
  • Molecular Biology
  • Gerontology

Background:

  • Mitophagy is a critical mitochondrial quality control process essential for cellular homeostasis.
  • Defects in mitophagy are linked to neurodegenerative diseases (e.g., Parkinson's, Alzheimer's), cancer, and other disorders.
  • Mitochondria influence organismal healthspan and lifespan through pathways like senescence and inflammation.

Purpose of the Study:

  • To review current understanding of mitophagy mechanisms.
  • To explore the role of mitochondria in aging and age-related diseases.
  • To examine genetic evidence supporting mitophagy as a pro-longevity mechanism.

Main Methods:

  • Literature review of recent research on mitophagy.
  • Analysis of mitochondrial functions and their relation to aging.
  • Examination of genetic studies linking mitophagy to lifespan.

Main Results:

  • Mitophagy is a key regulator of cellular and organismal health.
  • Dysfunctional mitophagy contributes to the pathogenesis of various age-related diseases.
  • Evidence suggests mitophagy plays a significant role in promoting longevity.

Conclusions:

  • Mitophagy is a fundamental mechanism for maintaining cellular and organismal health.
  • Enhancing mitophagy may offer therapeutic strategies against age-related degenerative diseases.
  • Mitophagy is a crucial pro-longevity pathway with implications for healthy aging.