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Updated: Aug 23, 2025
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Spatial and Temporal Analysis of Active ERK in the C. elegans Germline
Published on: November 29, 2016
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Relating individual cell division events to single-cell ERK and Akt activity time courses
Alan D Stern1, Gregory R Smith2, Luis C Santos1
1Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Scientific Reports
|October 27, 2022
Summary
Single-cell analysis reveals that ERK and Akt pathway activities are crucial throughout the cell cycle, not just before the restriction point, influencing cell division outcomes.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Understanding cell cycle regulation is key to cancer research.
- ERK and Akt pathways are vital hubs in cell cycle progression and drug targets.
- Single-cell dynamics of these pathways remain poorly understood.
Purpose of the Study:
- To investigate the single-cell dynamics of ERK and Akt pathways in relation to cell division.
- To determine the role of these pathways throughout the mammalian cell cycle.
- To identify potential differences in pathway activity between dividing and non-dividing cells.
Main Methods:
- Utilized the non-transformed MCF10A epithelial cell line.
- Monitored single-cell dynamics of ERK and Akt pathways.
- Paired pathway activity with division events in the same cells.
- Performed network reconstruction experiments.
Main Results:
- Elevated ERK and Akt activities observed in the S-G2 phase of dividing cells.
- ERK and Akt activities showed weaker correlation in dividing cells, suggesting independent roles.
- ERK activity was more strongly linked to cell division fate than Akt activity.
- Pathway roles extend beyond the restriction point into S and G2 phases.
Conclusions:
- ERK and Akt pathways play significant roles throughout the cell cycle, not solely before the restriction point.
- ERK activity dynamics appear more critical for driving cell division in non-transformed cells.
- Findings challenge traditional views and highlight the importance of single-cell pathway dynamics.
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