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From growth to cell cycle control.

B Ducommun1

  • 1E.M.B.L. Differentiation Programme, Heidelberg, Germany.

Seminars in Cell Biology
|August 1, 1991
PubMed
Summary
This summary is machine-generated.

Quiescent cells re-enter the cell cycle via signal transduction pathways. Extracellular-signal regulated kinases (ERKs) and tumor suppressor proteins like Rb and p53 are key regulators of cell proliferation and oncogenesis.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Oncology

Background:

  • Understanding cell cycle control is crucial for deciphering oncogenesis.
  • Signal transduction pathways link extracellular signals to cell cycle machinery.

Purpose of the Study:

  • To review and discuss the role of signal transduction pathways in cell proliferation.
  • To explore the involvement of extracellular-signal regulated kinases (ERKs) and tumor suppressor genes in cell cycle regulation.

Main Methods:

  • Review of recent data on signal transduction pathways.
  • Analysis of the role of protein kinase cascades.
  • Examination of the function of cyclins, Rb, and p53.

Main Results:

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  • Protein kinase cascades, initiated by growth factor receptors, transduce extracellular stimuli.
  • Extracellular-signal regulated kinases (ERKs) are important in this pathway.
  • Cyclin expression and cell proliferation are regulated by ERKs, Rb, and p53.

    • Conclusions:

    • Signal transduction pathways, particularly involving ERKs, are critical for cell cycle re-entry and proliferation.
    • Tumor suppressor genes Rb and p53 significantly influence cell cycle control.
    • These mechanisms are fundamental to understanding oncogenesis.