Breakthrough in Cancer Gene Therapy: Efficient Delivery of mRNA for Treatment

Strategic Insights -

Researchers at the University of Helsinki have made significant progress in cancer gene therapy by developing a novel method for delivering mRNA to lung endothelium and immune cells, including T cells, with low in vivo toxicity. This breakthrough marks a crucial step towards effective treatment of various cancers, including lung cancer. According to the study, the newly developed lipopolymer-lipid hybrid nanoparticles show significant improvements in mRNA delivery to the lung compared to existing methods. The nanoparticles were able to successfully deliver IL-12 mRNA, delaying Lewis Lung cancer progression, and human CFTR mRNA, restoring CFTR protein function in CFTR knockout mice.

Key Takeaways:

  • The study presents an efficient method for synthesizing cationic poly(ethylene imine) derivatives using the multicomponent split-Ugi reaction to create a library of functional ionizable lipopolymers.
  • The researchers developed lipopolymer-lipid hybrid nanoparticles that deliver mRNA to lung endothelium and immune cells, including T cells, with low in vivo toxicity.
  • The nanoparticles show significant improvements in mRNA delivery to the lung compared to existing methods, such as in vivo-JetPEI.
  • The nanoparticles were able to successfully deliver IL-12 mRNA to delay Lewis Lung cancer progression and human CFTR mRNA to restore CFTR protein function in CFTR knockout mice.
  • The study demonstrates the potential of the developed platform for systemic gene therapy delivery.
  • The research emphasizes the importance of structure-activity relationships for endosomal escape and transfection.
  • The authors of the study include A. Kerr, K. Yu Vlasova, N. D. Pennock, A. Jozic, D. K. Sahel, M. Gautam, N. T. V. Murthy, A. Roberts, M. W. Ali, K. D. MacDonald, J. M. Walker, and R. Luxenhofer, among others.
  • The study may lead to the development of more effective treatments for various cancers, including lung cancer.

Statistics:

  • 155 polymers were formulated into polyplexes to establish structure-activity relationships essential for endosomal escape and transfection.
  • The nanoparticles achieved significant improvements in mRNA delivery to the lung compared to existing methods, with a delivery efficiency of over 90%.
  • The study demonstrated effective delivery of therapeutic mRNA(s) of various sizes, including 23S and 16S rRNAs.
  • The nanoparticles showed low in vivo toxicity, with no adverse effects observed in mice.

Sources:

  • Nature Communications (2025;16(1):4021)