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Updated: Jul 7, 2026

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CBX2 as a therapeutic target in colorectal cancer: insights into the altered chromatin accessibility via

Bangting Wang1,2, Shijie Zhang1, Yumeng Guo3

  • 1Digestive Endoscopy Department, The First Affiliated Hospital with Nanjing Medical University and Jiangsu Province Hospital, Nanjing, Jiangsu, China.

Oncogene
|March 14, 2025
PubMed

Insights

Chromobox homolog 2 (CBX2) promotes colorectal cancer (CRC) progression and chemoresistance. Targeting the RUNX1-CBX2-MAP4K1 axis offers a promising therapeutic strategy for CRC.

Area of Science:

  • Oncology
  • Molecular Biology
  • Epigenetics

Background:

  • Chromobox homolog 2 (CBX2) is implicated in various cancers.
  • Its specific role in colorectal cancer (CRC) requires further elucidation.

Purpose of the Study:

  • To investigate the functional and regulatory roles of CBX2 in colorectal cancer (CRC).
  • To identify key molecular pathways involving CBX2 in CRC progression.

Main Methods:

  • Tissue microarray analysis, in vitro and in vivo functional studies (cell lines, organoids, xenografts, mouse models).
  • RNA-sequencing (RNA-seq), Assay for Transposase-Accessible Chromatin using sequencing (ATAC-seq), CUT & RUN assays.
  • Identification of regulatory networks and target genes.

Main Results:

  • CBX2 is overexpressed in CRC tumors and correlates with poor prognosis.
  • CBX2 promotes CRC progression and chemoresistance.
  • RUNX1 is a positive regulator of CBX2, and the RUNX1-CBX2-MAP4K1 axis is crucial for CRC.
  • CBX2 influences epigenetic modifications and chromatin accessibility.

Conclusions:

  • CBX2 plays a pivotal role in colorectal cancer (CRC) progression.
  • The RUNX1-CBX2-MAP4K1 axis is a key pathway in CRC.
  • CBX2 is a potential biomarker and therapeutic target for CRC.

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