Related Experiment Video

Updated: Mar 3, 2026

LINE-1 Methylation Analysis in Mesenchymal Stem Cells Treated with Osteosarcoma-Derived Extracellular Vesicles
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LINE-1 Methylation Analysis in Mesenchymal Stem Cells Treated with Osteosarcoma-Derived Extracellular Vesicles

Published on: February 1, 2020

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The Role of DNA Methylation in Osteosarcoma Pathogenesis and Therapy

Xiaolan Zhou1, Bingbing Li1, Peigan Tao2

  • 1Department of Pediatrics, Shaoxing Central Hospital, Affiliated Central Hospital of Shaoxing University, Shaoxing City, Zhejiang Province, 312030, People's Republic of China.

Oncotargets and Therapy
|March 2, 2026
PubMed

Insights

DNA methylation, a key epigenetic regulator, drives osteosarcoma (OS) development and metastasis through distinct genomic patterns. Targeting DNA methylation offers a promising therapeutic strategy for this challenging bone cancer.

Area of Science:

  • Oncology
  • Epigenetics
  • Molecular Biology

Background:

  • Osteosarcoma (OS) is a malignant bone tumor in children and adolescents with poor treatment outcomes.
  • Chemotherapy resistance, recurrence, and metastasis are significant clinical challenges in OS management.
  • Epigenetic regulation, specifically DNA methylation, is implicated in OS pathogenesis.

Purpose of the Study:

  • To review the role of DNA methylation in osteosarcoma development, progression, and metastasis.
  • To explore the potential of DNA methylation profiling for OS diagnosis and prognosis.
  • To examine the clinical translation of DNA methylation-targeting drugs in OS treatment.

Main Methods:

  • Systematic review of existing research on DNA methylation in osteosarcoma.
  • Analysis of DNA methylation patterns (hypomethylation and hypermethylation) in OS.
  • Evaluation of therapeutic strategies targeting DNA methylation, such as decitabine.

Main Results:

  • Osteosarcoma exhibits a "dual pattern" of DNA methylation: genome-wide hypomethylation and promoter-specific hypermethylation.
  • This dual pattern promotes tumor proliferation, invasion, metastasis, cancer stem cell maintenance, and modulates the tumor immune microenvironment (TIME).
  • Molecular classification based on DNA methylation profiles shows potential for OS diagnosis and prognosis.

Conclusions:

  • DNA methylation is a critical driver of osteosarcoma progression and metastasis.
  • Targeting DNA methylation pathways presents a promising therapeutic avenue for osteosarcoma.
  • Further research into DNA methylation mechanisms and targeted therapies is crucial for improving OS patient outcomes.
Keywords:
DNA methylationbiomarkersepigeneticsosteosarcomatargeted therapytumor microenvironment

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