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Updated: Feb 28, 2026

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells
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UnPAKing RUNX3 functions-Both sides of the coin

Arun Kumar1, Sandhya Sundaram2, Suresh K Rayala1

  • 1a Department of Biotechnology , Indian Institute of Technology Madras (IITM) , Chennai , India.

Small Gtpases
|June 20, 2017
PubMed

Insights

Post translational modifications, specifically phosphorylation regulated by PAK1, are crucial for RUNX3 functions. This review details RUNX3

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Cell Signaling

Background:

  • RUNX3 is a key transcription factor involved in various cellular processes.
  • Post-translational modifications (PTMs) significantly influence protein function.
  • Aberrant RUNX3 activity is implicated in the development of several cancers.

Purpose of the Study:

  • To review the phosphorylation-dependent functions of RUNX3.
  • To elucidate the regulatory role of PAK1 in RUNX3 phosphorylation.
  • To discuss the implications of these modifications in tumorigenesis.

Main Methods:

  • Literature review of existing studies on RUNX3, PAK1, and phosphorylation.
  • Analysis of signaling pathways involving PAK1 and RUNX3.
  • Synthesis of current knowledge on RUNX3 PTMs and cancer.

Main Results:

  • Phosphorylation by PAK1 alters RUNX3's transcriptional activity.
  • Specific phosphorylation sites on RUNX3 dictate its interactions and functions.
  • PAK1-mediated RUNX3 phosphorylation impacts cell proliferation and apoptosis.

Conclusions:

  • Phosphorylation is a critical PTM regulating RUNX3's role in tumorigenesis.
  • Targeting the PAK1-RUNX3 axis may offer therapeutic strategies for cancer.
  • Further research into RUNX3 PTMs is essential for understanding cancer development.

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