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Updated: Mar 6, 2026

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells
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Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells

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RUNX3 and p53: How Two Tumor Suppressors Cooperate Against Oncogenic Ras?

Jung-Won Lee1, Andre van Wijnen2, Suk-Chul Bae3

  • 1Department of Biochemistry, School of Medicine, and Institute for Tumor Research, Chungbuk National University, Cheongju, 28644, South Korea.

Advances in Experimental Medicine and Biology
|March 17, 2017
PubMed

Insights

RUNX3 acts as a tumor suppressor by regulating p53 pathways. It enhances the DNA damage response and oncogene surveillance, crucial for preventing cancer development.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Cell Biology

Background:

  • RUNX family proteins are critical in development and cancer.
  • RUNX1 and RUNX2 specify hematopoietic and osteogenic lineages.
  • RUNX3 is involved in epithelial cell lineage determination.

Purpose of the Study:

  • To elucidate the molecular mechanisms of RUNX3's tumor-suppressor activity.
  • To understand RUNX3's role in p53-mediated pathways.
  • To investigate RUNX3's function in DNA damage response and oncogene surveillance.

Main Methods:

  • Analysis of mouse models.
  • Examination of human cancer specimens.
  • Molecular pathway analysis.

Main Results:

  • RUNX3 functions as a tumor suppressor through multiple mechanisms.
  • RUNX3 facilitates p53 phosphorylation via ATM/ATR in response to DNA damage.
  • RUNX3 induces ARF to stabilize p53 during oncogene activation.

Conclusions:

  • RUNX3 plays a significant role in tumor suppression.
  • RUNX3's activity is closely linked to p53-mediated processes.
  • RUNX3 is a key regulator in maintaining genomic stability and preventing neoplasia.
Keywords:
ARFDNA damageOncogene surveillanceRUNXTumor suppressorp53

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