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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...

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Related Experiment Video

Updated: Jun 10, 2026

Studying Cell Death Initiation Using a Digital Microscope
06:06

Studying Cell Death Initiation Using a Digital Microscope

Published on: November 10, 2023

Development of Non-invasive Methods to Study Cell Death.

G Imreh1, M Beckman, K Iverfeldt

  • 1Department of Biochemistry, Stockholm, Sweden.

Toxicology in Vitro : an International Journal Published in Association with BIBRA
|July 27, 2010
PubMed
Summary
This summary is machine-generated.

Researchers developed a new non-invasive marker for monitoring apoptosis in living cells. This method uses green fluorescent protein (GFP) to detect early nuclear changes during programmed cell death, distinguishing it from necrosis.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Apoptosis, or programmed cell death, is crucial for development and tissue homeostasis.
  • Distinguishing apoptosis from necrosis is vital for understanding disease mechanisms.
  • Current methods for monitoring apoptosis can be invasive or lack specificity.

Purpose of the Study:

  • To establish a novel, non-invasive marker for real-time monitoring of apoptosis in living cells.
  • To utilize nuclear envelope dynamics as an indicator of early apoptotic events.
  • To differentiate apoptotic cell death from necrotic cell death using a specific cellular marker.

Main Methods:

  • Generation of a human neuroblastoma cell line expressing GFP-tagged nuclear pore membrane protein.
  • Utilizing fluorescence microscopy to observe nuclear envelope dynamics in intact cell cultures.
  • Comparing GFP fluorescence changes during apoptosis versus necrosis.

Main Results:

  • A stable cell line allowing visualization of nuclear envelope dynamics was established.
  • Disappearance of GFP fluorescence at the nuclear rim was observed during apoptosis.
  • This fluorescence loss precedes nucleosomal DNA fragmentation, a hallmark of late apoptosis.
  • No significant change in GFP fluorescence was observed during necrosis.

Conclusions:

  • The GFP-tagged nuclear pore membrane protein serves as an early and specific marker for apoptosis.
  • This non-invasive method allows for convenient diagnosis of apoptotic development in cell cultures.
  • The technique offers a valuable tool for studying apoptosis in various biological contexts.