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Updated: Dec 10, 2025

Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production
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Epigenetic Awakening of Viral Mimicry in Cancer

Maxime Janin1, Manel Esteller2,3,4,5

  • 1Josep Carreras Leukaemia Research Institute (IJC), Badalona, Barcelona, Catalonia, Spain.

Cancer Discovery
|September 3, 2020
PubMed

Insights

Taxane-resistant triple-negative breast cancer cells evade immune response through metabolic changes and epigenetic alterations. Inhibiting EZH2 reactivates this response, halting tumor growth in resistant cells.

Area of Science:

  • Oncology
  • Epigenetics
  • Immunology

Background:

  • Triple-negative breast cancer (TNBC) poses significant treatment challenges.
  • Taxane resistance is a major clinical obstacle in TNBC therapy.
  • Viral mimicry pathways are crucial for innate immune responses against cancer.

Purpose of the Study:

  • To elucidate the mechanisms by which taxane-resistant TNBC cells evade the viral mimicry response.
  • To identify potential therapeutic vulnerabilities in resistant TNBC.
  • To investigate the role of EZH2 inhibition in overcoming resistance.

Main Methods:

  • Analysis of metabolic alterations in resistant TNBC cells.
  • Assessment of DNA methylation and histone modifications (H3K27me3) in resistant cells.
  • Evaluation of tumor growth inhibition following EZH2 inhibition in vivo.

Main Results:

  • Resistant TNBC cells exhibit metabolic alterations, DNA hypomethylation, and H3K27me3 relocation.
  • These adaptations allow evasion of the viral mimicry response.
  • Inhibition of EZH2 in resistant cells reactivates viral mimicry and inhibits tumor growth.

Conclusions:

  • Metabolic and epigenetic reprogramming enables taxane resistance in TNBC by suppressing antiviral immunity.
  • Targeting EZH2 represents a promising therapeutic strategy for overcoming taxane resistance in TNBC.
  • Reactivation of viral mimicry is a key mechanism for inhibiting resistant TNBC growth.

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