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Related Concept Videos

Phagocytosis00:41

Phagocytosis

Cells pull particles inward and engulf them in spherical vesicles in an energy-requiring process called endocytosis. Phagocytosis (“cellular eating”) is one of three major types of endocytosis. Cells use phagocytosis to take in large objects—such as other cells (or their debris), bacteria, and even viruses.The objective of phagocytosis is often destruction. Cells use phagocytosis to eliminate unwelcome visitors, like pathogens (e.g., viruses and bacteria). It is perhaps unsurprising, that many...
Delivery Pathways to the Lysosome01:36

Delivery 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...
Autophagy01:27

Autophagy

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,...
Phagocytosis of Apoptotic Cells01:17

Phagocytosis of Apoptotic Cells

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 by phagocytes.
Autophagic Cell Death01:18

Autophagic 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...
Cellular Injury V: Apoptosis and Autophagy01:22

Cellular 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...

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Related Experiment Video

Updated: Jun 18, 2026

Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry
11:39

Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry

Published on: July 21, 2017

Autophagy fights disease through cellular self-digestion.

Noboru Mizushima1, Beth Levine, Ana Maria Cuervo

  • 1Department of Physiology and Cell Biology, Tokyo Medical and Dental University, Tokyo 113-8519, Japan.

Nature
|February 29, 2008
PubMed
Summary

Autophagy, the cell's self-cleaning process, is crucial for health and disease, impacting aging, cancer, and neurodegeneration. Understanding this pathway could lead to new treatments for various human conditions.

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Related Experiment Videos

Last Updated: Jun 18, 2026

Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry
11:39

Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry

Published on: July 21, 2017

Analyzing Starvation-Induced Autophagy in the Drosophila melanogaster Larval Fat Body
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Analyzing Starvation-Induced Autophagy in the Drosophila melanogaster Larval Fat Body

Published on: August 4, 2022

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
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Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy

Published on: January 31, 2025

Area of Science:

  • Cellular Biology
  • Molecular Biology
  • Physiology

Background:

  • Autophagy, or cellular self-digestion, is a fundamental cellular process responsible for degrading damaged proteins and organelles.
  • Dysregulation of autophagy is implicated in numerous human diseases, including cancer, neurodegenerative disorders, infections, and aging.
  • While primarily protective, autophagy can paradoxically contribute to cell death under certain conditions.

Purpose of the Study:

  • To elucidate the multifaceted role of autophagy in human health and disease.
  • To explore the connections between autophagic dysfunction and various pathological conditions.
  • To investigate the potential of targeting autophagy for therapeutic interventions.

Main Methods:

  • Literature review and synthesis of current research on autophagy.
  • Analysis of the molecular mechanisms underlying autophagic processes.
  • Examination of the physiological and pathological implications of autophagy.

Main Results:

  • Autophagy plays a critical role in maintaining cellular homeostasis and responding to stress.
  • Aberrant autophagy is a common feature in diseases such as cancer and neurodegeneration.
  • The dual role of autophagy in cell survival and cell death highlights its complexity.

Conclusions:

  • A comprehensive understanding of autophagy is essential for deciphering its role in human health.
  • Targeting autophagy presents a promising therapeutic strategy for a range of diseases.
  • Further research into autophagy mechanisms may unlock novel approaches to improve human health and longevity.