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Overview of Cell Death

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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.
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Apoptosis

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Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size reduction of the tissue.

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Normal cells contain receptors that prevent them from being recognized by phagocytes.

Autophagic Cell Death

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Related Experiment Video

Updated: May 12, 2026

Strategies for Tracking Anastasis, A Cell Survival Phenomenon that Reverses Apoptosis

Strategies for Tracking Anastasis, A Cell Survival Phenomenon that Reverses Apoptosis

Published on: February 16, 2015

Apoptosis: controlled demolition at the cellular level.

Rebecca C Taylor¹, Sean P Cullen, Seamus J Martin

¹Molecular Cell Biology Laboratory, Department of Genetics, The Smurfit Institute, Trinity College, Dublin 2, Ireland.

Nature Reviews. Molecular Cell Biology

|December 13, 2007

Summary

This summary is machine-generated.

Apoptosis involves cellular changes for cell death and removal, orchestrated by caspase proteases. These enzymes precisely degrade proteins, preventing cell damage and immune reactions.

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Area of Science:

Cell Biology
Biochemistry
Immunology

Background:

Apoptosis, or programmed cell death, involves significant cellular restructuring.
This process is crucial for development and tissue homeostasis.
It prevents inflammation and ensures efficient removal of dying cells.

Purpose of the Study:

To elucidate the role of caspases in the demolition phase of apoptosis.
To understand how caspases control protein degradation during cell death.
To highlight the mechanisms preventing immune responses during apoptosis.

Main Methods:

Analysis of cellular architecture changes during apoptosis.
Identification of caspase targets through proteomic studies.
Investigation of molecular mechanisms preventing immunostimulation.

Main Results:

Caspase proteases orchestrate the demolition phase of apoptosis.
Specific protein targets are identified for controlled proteolysis.
Mechanisms are revealed that minimize cellular damage and prevent immune activation.

Conclusions:

Caspase-mediated proteolysis is essential for controlled apoptosis.
This process ensures efficient cell removal without triggering inflammation.
Understanding these pathways is vital for various biological and medical applications.