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Updated: Aug 24, 2025

In vitro Cell Migration and Invasion Assays
Published on: June 1, 2014
ERK signaling for cell migration and invasion
Shiela C Samson1,2, Akib M Khan1,2, Michelle C Mendoza1,2
1Department of Oncological Sciences, University of Utah, Salt Lake City, UT, United States.
Abstract:
The RAS - Extracellular signal-regulated kinase (RAS-ERK) pathway plays a conserved role in promoting cell migration and invasion. Growth factors, adhesion, and oncogenes activate ERK. While historically studied with respect to its control of cell proliferation and differentiation, the signaling pattern and effectors specific for cell migration are now coming to light. New advances in pathway probes have revealed how steady-state ERK activity fluctuates within individual cells and propagates to neighboring cells. We review new findings on the different modes of ERK pathway stimulation and how an increased baseline level of activity promotes single cell and collective migration and invasion. We discuss how ERK drives actin polymerization and adhesion turnover for edge protrusion and how cell contraction stimulates cell movement and ERK activity waves in epithelial sheets. With the steady development of new biosensors for monitoring spatial and temporal ERK activity, determining how cells individually interpret the multiple in vivo signals to ERK is within reach.
Insights
The RAS-ERK pathway promotes cell migration and invasion. New biosensors reveal how ERK activity fluctuations drive cell movement and invasion, offering insights into cellular signaling.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- The RAS-Extracellular signal-regulated kinase (RAS-ERK) pathway is crucial for cell migration and invasion.
- ERK signaling historically linked to proliferation and differentiation, now recognized for roles in cell motility.
- Recent advances illuminate specific ERK signaling patterns and effectors governing cell migration.
Purpose of the Study:
- To review new findings on ERK pathway stimulation modes.
- To discuss how elevated ERK baseline activity influences single-cell and collective migration/invasion.
- To explore ERK's role in actin dynamics, adhesion turnover, and cell contraction-mediated signaling waves.
Main Methods:
- Review of recent literature on RAS-ERK pathway signaling.
- Analysis of new pathway probes and biosensor data.
- Discussion of experimental observations on ERK activity and cell behavior.
Main Results:
- Increased baseline ERK activity promotes cell migration and invasion.
- ERK drives actin polymerization and adhesion turnover for cell edge protrusion.
- Cell contraction generates ERK activity waves in epithelial sheets.
Conclusions:
- Understanding ERK's role in cell migration is advancing with new technologies.
- Spatial and temporal monitoring of ERK activity is key to deciphering cell signaling.
- Future research can determine how cells interpret diverse in vivo signals to ERK.
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