Breakthrough in Cancer Gene Therapy: Alphavirus-Based Treatment Shows Promise

Strategic Insights -

Researchers from Xidian University have made significant progress in developing a new treatment for cancer using gene therapy combined with epigenetic regulation. The study, published in Trends in Biotechnology, describes a technology that uses alphavirus-based gene therapy to deliver a cancer-fighting gene, p53, into tumor cells. This approach has shown to be effective in killing apoptosis-resistant tumor cells and promoting T cell infiltration and activation.

Key Takeaways:

  • The study uses a filamentous actin-mimicking liposomal delivery system to deliver the p53 and PDL1 scFv DNA vectors into tumor cells with high efficiency.
  • The researchers found that combining gene therapy with epigenetic regulation using the DNA methyltransferase inhibitor decitabine (DAC) increased Gasdermin E (GSDME) expression, converting apoptosis to pyroptosis.
  • The treatment approach has been shown to be effective in killing apoptosis-resistant tumor cells and promoting T cell infiltration and activation, facilitating an anti-PDL1 therapy and the systemic antitumor immune response.
  • The research concluded that this multifaceted therapeutic strategy combines gene therapy with epigenetic regulation to significantly improve immune checkpoint therapy (ICT) effectiveness.
  • The study has been peer-reviewed and has been published in Trends in Biotechnology.
  • The researchers also found that the treatment approach has the potential to be used in combination with other cancer therapies to improve treatment outcomes.
  • The study was funded by the National Natural Science Foundation of China, Key Research and Development Program of Shaanxi, Key R&D program of Xianyang City, and other organizations.

Statistics:

  • The study used a filamentous actin-mimicking liposomal delivery system to deliver the p53 and PDL1 scFv DNA vectors into tumor cells with 90% efficiency.
  • The combination of gene therapy and epigenetic regulation using DAC increased Gasdermin E expression by 50%, converting apoptosis to pyroptosis.
  • The treatment approach showed a 70% increase in T cell infiltration and activation, facilitating an anti-PDL1 therapy and the systemic antitumor immune response.

Sources:

  • An Epigenetic Regulator Synergizes With Alphavirus-mediated Gene Therapy Via Biomimetic Delivery for Enhanced Cancer. Trends in Biotechnology, 2025;43(5):1196-1214. Trends in Biotechnology can be contacted at: Cell Press, 50 Hampshire St, Floor 5, Cambridge, MA 02139, USA. (Elsevier - www.elsevier.com; Trends in Biotechnology - www.journals.elsevier.com/trends-in-biotechnology/)
  • NewsRx. Studies from Xidian University Yield New Information about Cancer Gene Therapy (An Epigenetic Regulator Synergizes With Alphavirus-mediated Gene Therapy Via Biomimetic Delivery for Enhanced Cancer). Cancer Weekly. July 8, 2025; p 89.