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Updated: Aug 10, 2026

Monitoring Kinase and Phosphatase Activities Through the Cell Cycle by Ratiometric FRET
13:38

Monitoring Kinase and Phosphatase Activities Through the Cell Cycle by Ratiometric FRET

Published on: January 27, 2012

Integrating the MAP kinase signal into the G1 phase cell cycle machinery

K Roovers1, R K Assoian

  • 1Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6084, USA.

Bioessays : News and Reviews in Molecular, Cellular and Developmental Biology
|August 17, 2000
PubMed

Insights

Cellular responses to extracellular signals like growth factors depend on signal intensity and duration. This review connects ERK signaling to cell cycle control, highlighting differential regulation by receptor tyrosine kinases and integrins.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Cell proliferation is controlled by environmental cues from growth factors and the extracellular matrix.
  • Receptor tyrosine kinases and integrins bind these cues, initiating signal transduction cascades.
  • The mitogen-activated protein kinase (MAPK) cascade, including ras, Raf, MEK, and ERK, is a key pathway, but its role in proliferation is complex.

Purpose of the Study:

  • To review recent findings on the role of ERK signaling in G1 phase cell cycle control.
  • To explore how signal intensity and duration influence cellular responses to ERK activation.
  • To discuss the differential regulation of ERK signaling by receptor tyrosine kinases and integrins during G1 phase.

Main Methods:

  • Literature review of recent studies on ERK signaling and cell cycle control.
  • Analysis of research investigating signal transduction pathways.
  • Comparative examination of receptor tyrosine kinase and integrin signaling mechanisms.

Main Results:

  • ERK activation can both stimulate and inhibit cell proliferation.
  • The cellular outcome of ERK signaling is dependent on signal intensity and duration.
  • Receptor tyrosine kinases and integrins exhibit distinct regulatory effects on ERK signaling in G1 phase.

Conclusions:

  • ERK signaling plays a critical role in G1 phase cell cycle progression.
  • Understanding the nuances of ERK signal dynamics is essential for predicting cellular behavior.
  • Differential regulation by upstream receptors provides a mechanism for fine-tuning cell proliferation.

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