Epigenetic heterogeneity and plasticity in therapy-induced tumor states through single-cell multi-omics

Hee Jung Kim1, Hwiyeong Lee2, Jin Hong2

  • 1Ajou Energy Science Research Center, Ajou University, Suwon, Korea.

Molecular Oncology
|June 4, 2026
PubMed

Insights

Epigenetic mechanisms drive cancer cell plasticity and therapeutic resistance by altering gene expression without changing DNA sequence. Understanding these epigenetic changes is key to developing new precision oncology strategies.

Area of Science:

  • Oncology
  • Epigenetics
  • Cancer Biology

Background:

  • Therapeutic resistance and disease recurrence are significant challenges in oncology.
  • Tumor heterogeneity and cancer cell plasticity are primary drivers of these challenges.
  • Epigenetic mechanisms are key regulators of adaptive transcriptional reprogramming under treatment pressure.

Purpose of the Study:

  • To review how diverse therapeutics induce epigenetic remodeling.
  • To explore the role of epigenetic changes in driving distinct cellular states.
  • To evaluate single-cell multi-omics platforms for profiling chromatin plasticity and identifying biomarkers.

Main Methods:

  • Review of current literature on epigenetic mechanisms in cancer therapy resistance.
  • Analysis of single-cell multi-omics approaches for dissecting epigenetic regulation.
  • Evaluation of therapeutic interventions including chemotherapy, targeted agents, immunotherapy, hormonal interventions, and epigenetic drugs.

Main Results:

  • Therapeutics induce widespread remodeling of DNA methylation, histone modifications, and chromatin accessibility.
  • These epigenetic changes drive transitions to drug-tolerant persister (DTP) phenotypes, senescence-like populations, epithelial-mesenchymal transition (EMT) states, and immune-evasive cell populations.
  • Single-cell multi-omics platforms enable profiling of chromatin-based plasticity and identification of clinically relevant biomarkers.

Conclusions:

  • Epigenetic plasticity is a critical mechanism underlying therapeutic resistance and cancer recurrence.
  • Single-cell multi-omics provides powerful tools to dissect these processes at high resolution.
  • Integrative analyses offer a framework for developing precision oncology strategies to overcome resistance.

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