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Related Concept Videos

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.
Lysosomes01:31

Lysosomes

Lysosomes are membrane-enclosed spherical sacs derived from the Golgi apparatus. The most important function of the lysosome is degrading macromolecules and biological polymers that are released during membrane trafficking events such as the secretory, endocytic, autophagic, and phagocytic pathways. The degradation is carried out by several hydrolytic enzymes active in an acidic environment of the lysosomal lumen. These acid hydrolases are involved in cellular processes such as cell signaling,...
Lysosomes01:31

Lysosomes

Lysosomes are membrane-enclosed spherical sacs derived from the Golgi apparatus. The most important function of the lysosome is degrading macromolecules and biological polymers that are released during membrane trafficking events such as the secretory, endocytic, autophagic, and phagocytic pathways. The degradation is carried out by several hydrolytic enzymes active in an acidic environment of the lysosomal lumen. These acid hydrolases are involved in cellular processes such as cell signaling,...
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...
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...
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...

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Related Experiment Video

Updated: Jun 17, 2026

Detection and Isolation of Apoptotic Bodies to High Purity
12:17

Detection and Isolation of Apoptotic Bodies to High Purity

Published on: August 12, 2018

[Lysosomes and apoptosis].

Drazen Vikić-Topić1, Olga Carević

  • 1NMR Center, Ruder Bosković Institute, Zagreb, Hrvatska.

Acta Medica Croatica : Casopis Hravatske Akademije Medicinskih Znanosti
|December 17, 2009
PubMed
Summary

Lysosomes, key components of the cellular lysosomal system, are involved in numerous physiological and pathological processes. Understanding lysosomotropism is crucial for studying cellular damage and disease.

Area of Science:

  • Cell Biology
  • Biochemistry

Context:

  • Lysosomes, identified in 1955, are membrane-bound organelles containing acid hydrolases.
  • They are integral to the dynamic lysosomal system in eukaryotic cells, including endosomes and autophagosomes.

Purpose:

  • To elucidate the multifaceted roles of the lysosomal system in cellular functions and disease.
  • To define lysosomotropism and its implications for substance entry into lysosomes.

Summary:

  • The lysosomal system participates in macromolecule degradation, cellular component turnover, tissue regression, and hormone regulation.
  • It is implicated in pathological conditions like inflammation, ischemia, and specific lysosomal storage diseases.
  • Lysosomotropism describes the uptake of various substances into lysosomes, potentially causing toxicity or altering membrane properties.

More Related Videos

Live-cell Imaging of Lysosomal Membrane Permeabilization During Necroptosis
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Live-cell Imaging of Lysosomal Membrane Permeabilization During Necroptosis

Published on: November 14, 2025

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
09:18

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death

Published on: December 27, 2016

Related Experiment Videos

Last Updated: Jun 17, 2026

Detection and Isolation of Apoptotic Bodies to High Purity
12:17

Detection and Isolation of Apoptotic Bodies to High Purity

Published on: August 12, 2018

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

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
09:18

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death

Published on: December 27, 2016

Impact:

  • Provides a comprehensive overview of lysosome function in health and disease.
  • Highlights the significance of lysosomotropism in toxicology and pathology.
  • Establishes lysosomes as critical players in cellular homeostasis and disease pathogenesis.