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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

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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.
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Cellular Injury V: Apoptosis and Autophagy01:22

Cellular Injury V: Apoptosis and Autophagy

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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...
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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.
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Aging01:26

Aging

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
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Mitochondria01:37

Mitochondria

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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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Related Experiment Video

Updated: May 6, 2026

In Situ Immunofluorescent Staining of Autophagy in Muscle Stem Cells
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The Interplay between Autophagy and Aging.

Jong-Ok Pyo1, Seung-Min Yoo, Yong-Keun Jung

  • 1Bio-MAX Institute, Seoul National University School of Biological Sciences, Seoul, Korea.

Diabetes & Metabolism Journal
|November 8, 2013
PubMed
Summary
This summary is machine-generated.

Autophagy, a cellular cleanup process, is linked to aging. This review explores how autophagy protects cells from aging-related stressors and promotes longevity.

Keywords:
AgingAutophagyCaloric restrictionMitochondriaStress

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Area of Science:

  • Cellular Biology
  • Gerontology
  • Molecular Biology

Background:

  • Aging is a complex process involving cellular maintenance failure and accumulated damage.
  • Autophagy, a cellular degradation pathway, is increasingly implicated in aging.
  • The precise relationship between autophagy and aging requires further elucidation.

Purpose of the Study:

  • To summarize the current understanding of the link between autophagy and aging.
  • To explore the cytoprotective roles of autophagy in the context of aging.

Main Methods:

  • Literature review of studies on autophagy and aging.
  • Analysis of autophagy's role in cellular stress responses.
  • Examination of autophagy's involvement in clearing damaged cellular components.

Main Results:

  • Autophagy mitigates stress from starvation, reactive oxygen species, and protein aggregation.
  • Autophagy facilitates the removal of damaged mitochondria (mitophagy).
  • Lysosomal degradation is a key mechanism in autophagy-mediated cellular maintenance.

Conclusions:

  • Autophagy plays a crucial cytoprotective role against aging-related cellular damage.
  • Understanding autophagy mechanisms is vital for addressing aging processes.
  • Further research is needed to fully define the autophagy-aging relationship.