Related Experiment Video

Updated: Jul 4, 2025

Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors
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DNMT3L inhibits hepatocellular carcinoma progression through DNA methylation of CDO1: insights from big data to basic

Xiaokai Yan1, Yao Qi2,3, Xinyue Yao4

  • 1Department of Oncology, The Second Affiliated Hospital of Zunyi Medical University, Zunyi, China. yxk11011@163.com.

Journal of Translational Medicine
|February 2, 2024
PubMed
Abstract

Insights

DNA methyltransferase 3-like (DNMT3L) is downregulated in liver cancer (HCC), inhibiting proliferation and metastasis. DNMT3L upregulates CDO1, revealing its anti-cancer role and the power of big data in cancer research.

Area of Science:

  • Oncology
  • Epigenetics
  • Bioinformatics

Background:

  • Hepatocellular carcinoma (HCC) pathogenesis involves complex regulatory factors.
  • DNA methyltransferase 3-like (DNMT3L) is a key epigenetic regulator with an unclear role in HCC.
  • Big data analysis is increasingly vital for understanding cancer mechanisms.

Purpose of the Study:

  • To investigate the function and mechanism of DNMT3L in hepatocellular carcinoma (HCC).
  • To integrate big data analysis with experimental validation to elucidate DNMT3L's role.
  • To explore the epi-transcriptomic regulatory mechanisms of DNMT3L in HCC.

Main Methods:

  • Analysis of multiple HCC datasets to assess DNMT3L expression and prognostic correlations.
  • In vitro and in vivo experiments to evaluate DNMT3L's impact on hepatoma cell phenotypes.
  • Molecular assays including methylation-specific PCR (MSP), western blot, and dual-luciferase assays to explore regulatory pathways.

Main Results:

  • DNMT3L expression is downregulated in HCC tissues and correlates with improved patient prognosis.
  • Overexpression of DNMT3L suppresses hepatocellular carcinoma cell proliferation and metastasis.
  • CDO1 identified as a DNMT3L target gene; DNMT3L enhances CDO1 expression by inhibiting DNMT3A-mediated promoter methylation, conferring anti-cancer effects.

Conclusions:

  • DNMT3L plays a significant tumor-suppressive role in HCC through epi-transcriptomic regulation.
  • The study highlights the essential role of big data analytics in uncovering complex biological processes in cancer.
  • DNMT3L and its regulatory pathway represent potential therapeutic targets for HCC.
Keywords:
Big dataCDO1DNA methylationDNMT3LHepatocellular carcinoma

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