Related Experiment Video

Updated: Dec 29, 2025

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

Published on: September 1, 2019

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CROX (Cluster Regulation of RUNX) as a Potential Novel Therapeutic Approach

Yasuhiko Kamikubo1

  • 1Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan.

Molecules and Cells
|January 30, 2020
PubMed

Insights

Comprehensive inhibition of RUNX1, RUNX2, and RUNX3, known as cluster regulation of RUNX (CROX), effectively suppresses diverse cancer cells. This strategy targets the RUNX family

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Genetics

Background:

  • RUNX family members, including RUNX1, RUNX2, and RUNX3, are crucial for cancer cell proliferation and survival.
  • RUNX1 specifically plays an oncogenic role in various cancers like leukemia, lung, and gastric cancer, and supports metastatic niche formation.
  • The paradoxical role of RUNX1 as both a tumor suppressor and oncogene necessitates a deeper understanding of its function in cancer.

Purpose of the Study:

  • To elucidate the significance of the RUNX family in cancer progression.
  • To investigate the efficacy of comprehensive RUNX inhibition (CROX) as a cancer therapeutic strategy.
  • To explore the mechanisms underlying RUNX1's function, including genetic compensation, p53 activation, and feedback loops.

Main Methods:

  • Review of recent findings on RUNX family transcription factors and their roles in cancer.
  • Analysis of "genetic compensation of RUNX family transcription factors" and its implications.
  • Investigation of RUNX1 inhibition-induced effects on cancer cells, focusing on p53 activation.
  • Examination of the "autonomous feedback loop of RUNX1-p53-CBFB" in acute myeloid leukemia.

Main Results:

  • Comprehensive inhibition of RUNX1, RUNX2, and RUNX3 (CROX) demonstrated superior cancer cell suppression compared to RUNX1 inhibition alone.
  • RUNX1 was confirmed to be essential for the survival and proliferation of various cancer types.
  • RUNX1 inhibition was found to induce inhibitory effects on leukemia and solid cancer cells via p53 activation.
  • An autonomous feedback loop involving RUNX1, p53, and CBFB was identified in acute myeloid leukemia cells.

Conclusions:

  • The RUNX gene cluster plays a critical role in the maintenance and progression of diverse cancers.
  • Cluster regulation of RUNX (CROX) is a highly effective strategy for suppressing cancer cells.
  • Modulation of the RUNX cluster, potentially using pyrrole-imidazole polyamide gene-switch technology, represents a promising novel therapeutic approach for cancer treatment.
Keywords:
CROXgene-switch technology

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