Related Experiment Video
Updated: Oct 19, 2025
07:13
A Planarian Motility Assay to Gauge the Biomodulating Properties of Natural Products
Published on: May 30, 2020
6.0K
Detection of Cell Death in Planarians
Nídia De Sousa1,2, Teresa Adell1,2
1Department of Genetics, Microbiology and Statistics and Institute of Biomedicine, Universitat de Barcelona, Barcelona, Catalunya, Spain.
Bio-Protocol
|September 17, 2021
Summary
Planarians regenerate by balancing cell proliferation and death. This study details two key molecular methods, Caspase-3 activity and TUNEL assay, for quantifying cell death in these remarkable flatworms.
Area of Science:
- Regenerative biology
- Stem cell biology
- Molecular biology
Background:
- Planarians exhibit remarkable regeneration and body size control.
- These processes depend on adult stem cells and regulated cell renewal.
- Cell renewal involves a balance between cell proliferation, differentiation, and cell death.
Purpose of the Study:
- To present optimized molecular protocols for detecting cell death in planarians.
- To provide methods for quantifying cell death, a crucial process in planarian biology.
- To highlight techniques essential for understanding planarian regeneration and homeostasis.
Main Methods:
- Quantification of Caspase-3 activity.
- Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay.
- Application of these molecular techniques in planarian research.
Main Results:
- Established Caspase-3 activity assay for cell death detection.
- Validated TUNEL assay for quantifying cell death in planarians.
- Provided a comparative overview of these two primary methods.
Conclusions:
- Caspase-3 activity and TUNEL assay are vital tools for studying planarian cell death.
- Accurate quantification of cell death is essential for understanding planarian regeneration and growth.
- These methods facilitate research into the molecular mechanisms governing planarian stem cell dynamics.
Related Concept Videos
01:33Whole Body Regeneration
3.6K
Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
3.6K
01:30Overview of Cell Death
8.1K
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...
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...
8.1K