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Related Concept Videos

Overview of Cell Death01:30

Overview of Cell Death

Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the 20th century...
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
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Lysosomal Hydrolases01:22

Lysosomal Hydrolases

Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
Cellular Injury IlI: Cellular Death01:11

Cellular Injury IlI: Cellular Death

Cell death is the irreversible loss of cellular structure and function, representing the final stage of severe injury. It plays a key role in both normal physiology and disease.Types of Cell DeathThe two main types are necrosis and apoptosis, though others like necroptosis and pyroptosis also exist.Necrosis:Necrosis is an unregulated form of cell death caused by severe injury such as trauma, toxins, or ischemia. It is characterized by cell swelling, membrane loss, rupture, and leakage of...
Necrosis01:16

Necrosis

Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
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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.

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Related Experiment Video

Updated: May 11, 2026

Live-cell Imaging of Lysosomal Membrane Permeabilization During Necroptosis
05:30

Live-cell Imaging of Lysosomal Membrane Permeabilization During Necroptosis

Published on: November 14, 2025

Lysosomal cell death at a glance.

Sonja Aits1, Marja Jäättelä

  • 1Danish Cancer Society Research Center, Cell Death and Metabolism, Strandboulevarden 49, DK-2100 Copenhagen, Denmark.

Journal of Cell Science
|May 31, 2013
PubMed
Summary

Lysosomes, the cell

Area of Science:

  • Cell Biology
  • Biochemistry
  • Molecular Biology

Background:

  • Lysosomes function as cellular recycling centers, containing hydrolases to degrade macromolecules.
  • Lysosomal membrane permeabilization (LMP) causes content leakage into the cytosol, initiating cell death.
  • Lysosomal cell death involves cathepsin proteases and exhibits varied features (necrotic, apoptotic).

Purpose of the Study:

  • To summarize current knowledge on lysosomal cell death.
  • To emphasize upstream mechanisms driving lysosomal membrane permeabilization.

Main Methods:

  • Literature review and synthesis of existing research on lysosomal cell death.
  • Focus on molecular pathways leading to lysosomal membrane permeabilization.

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LPS and ATP-induced Death of PMA-differentiated THP-1 Macrophages and its Validation
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LPS and ATP-induced Death of PMA-differentiated THP-1 Macrophages and its Validation

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Use of LysoTracker to Detect Programmed Cell Death in Embryos and Differentiating Embryonic Stem Cells
12:44

Use of LysoTracker to Detect Programmed Cell Death in Embryos and Differentiating Embryonic Stem Cells

Published on: October 11, 2012

Related Experiment Videos

Last Updated: May 11, 2026

Live-cell Imaging of Lysosomal Membrane Permeabilization During Necroptosis
05:30

Live-cell Imaging of Lysosomal Membrane Permeabilization During Necroptosis

Published on: November 14, 2025

LPS and ATP-induced Death of PMA-differentiated THP-1 Macrophages and its Validation
06:12

LPS and ATP-induced Death of PMA-differentiated THP-1 Macrophages and its Validation

Published on: May 3, 2024

Use of LysoTracker to Detect Programmed Cell Death in Embryos and Differentiating Embryonic Stem Cells
12:44

Use of LysoTracker to Detect Programmed Cell Death in Embryos and Differentiating Embryonic Stem Cells

Published on: October 11, 2012

Main Results:

  • Lysosomal cell death is a significant cellular process mediated by cathepsins.
  • Upstream signaling pathways critically regulate lysosomal membrane permeabilization.
  • The outcome of lysosomal cell death is context-dependent.

Conclusions:

  • Understanding lysosomal cell death mechanisms is crucial for cellular homeostasis.
  • Further research into upstream regulators of LMP is warranted.
  • Lysosomal cell death pathways offer potential therapeutic targets.