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Updated: May 29, 2026

Cell Cycle-specific Measurement of γH2AX and Apoptosis After Genotoxic Stress by Flow Cytometry
08:21

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Published on: September 1, 2019

Genotoxic stress-mediated cell cycle activities for the decision of cellular fate

Adnan Erol1

  • 1Erol Project Development House for the Disorders of Energy Metabolism, Silivri, Istanbul, Turkey. eroladnan@hotmail.com

Cell Cycle (Georgetown, Tex.)
|September 17, 2011
PubMed

Insights

Maintaining genomic integrity is crucial for preventing cell damage and cancer. The DNA damage response (DDR) pathway, involving p53 and c-Myc, manages cell fate decisions like apoptosis and senescence in response to DNA damage.

Area of Science:

  • Cellular biology
  • Molecular genetics
  • Cancer research

Background:

  • Genomic integrity is vital for preventing apoptosis, senescence, and malignant transformation.
  • DNA damage from replication and stress is repaired by the DNA damage response (DDR) pathway.
  • The DDR pathway is a complex signaling network involving numerous proteins and kinases.

Purpose of the Study:

  • To explore the role of p53 and c-Myc in regulating cell cycle progression and fate in response to DNA damage.
  • To elucidate the intricate signaling network of the DDR pathway.
  • To understand how the DDR pathway influences cellular decisions like quiescence, apoptosis, oncogenesis, and senescence.

Main Methods:

  • Analysis of gene transcription regulation by p53 and c-Myc.
  • Investigation of cyclin-dependent kinase inhibitor (CDKI) expression.
  • Examination of protein kinase involvement in DDR signaling.

Main Results:

  • p53 induces genes that inhibit cell cycle progression, aiding genome stability.
  • Both p53 and c-Myc modulate CDKI expression, influencing cell fate.
  • The DDR pathway integrates signals to determine cellular outcomes such as quiescence, apoptosis, oncogenesis, and senescence.

Conclusions:

  • The DDR pathway is an extensive signaling network critical for maintaining genomic stability.
  • p53 and c-Myc play key roles in cell cycle regulation and fate determination following DNA damage.
  • Understanding the DDR pathway's crosstalk is essential for comprehending cellular responses to DNA damage and preventing diseases like cancer.

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