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Updated: Aug 11, 2026
08:02
Analysis of Cell Migration within a Three-dimensional Collagen Matrix
Published on: October 5, 2014
Changes in cell three-dimensional locomotory characteristics upon expression of the EJ-ras oncogene
P B Noble1, E D Shields, P A Walton
1Department of Oral Biology, Faculty of Dentistry, McGill University, Montreal, Canada.
Invasion & Metastasis
|January 1, 1993
Summary
Ras oncogene activation in cells increases speed and prolongs locomotion, showing cyclic patterns. This research explores cell migration changes linked to ras activation and pseudopod dynamics.
Area of Science:
- Cell Biology
- Oncology
- Biophysics
Background:
- The ras oncogene plays a role in cell membrane ruffling and locomotion.
- Ras activation is linked to cancer cell invasion.
- Understanding ras-mediated cell migration is crucial for cancer research.
Purpose of the Study:
- To investigate the effects of ras activation on cell locomotion.
- To analyze the three-dimensional migration patterns of cells in a collagen matrix.
- To explore the cyclic nature of cell movement.
Main Methods:
- Utilized a novel system to track cell trajectories in 3D.
- Cultured a specific cell line (212) with activated ras.
- Quantified cell speed, locomotion duration, and movement periodicity within collagen lattices.
Main Results:
- Ras activation led to a statistically significant increase in cell speed.
- Locomotory periods were prolonged in ras-activated cells.
- Observed cyclic locomotory behavior with a periodicity of approximately 30 minutes.
Conclusions:
- Ras activation alters cell migration dynamics, increasing speed and duration.
- The cyclic nature of locomotion suggests underlying regulatory mechanisms.
- Findings provide insights into pseudopod kinetics and ras-driven cell invasion.
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