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Lymph node-targeted metabolic regulatory nanovaccines to boost cancer immunotherapy by potentiating dendritic

Yingtao Zhong1, Ziwen Qiu1, Keyan Zhang1

  • 1School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, P. R. China. chengh@smu.edu.cn.

Materials Horizons
|August 1, 2025
PubMed

Insights

This study developed a novel nanovaccine (DAL) that enhances tumor vaccine efficacy by improving dendritic cell targeting and antigen presentation. DAL shows promise in inhibiting tumor growth and boosting immunotherapy responses.

Area of Science:

  • Immunology
  • Nanotechnology
  • Oncology

Background:

  • Tumor vaccines face challenges with dendritic cell (DC) targeting and antigen presentation.
  • Metabolic dysfunction in DCs impairs their ability to present antigens effectively.
  • Lovastatin (Lov) shows potential in enhancing DC function by modulating the mevalonate (MVA) pathway.

Purpose of the Study:

  • To develop a metabolic regulatory nanovaccine (DAL) for enhanced antitumor immunity.
  • To improve targeting efficiency to DCs and boost antigen presentation.
  • To investigate the efficacy of DAL in inhibiting tumor progression and enhancing immunotherapy.

Main Methods:

  • Self-assembly of dextran derivatives, water-insoluble neoantigens, and Lovastatin to create the DAL nanovaccine.
  • Evaluation of DC targeting and antigen presentation modulation in vitro.
  • In vivo assessment of DAL's efficacy in tumor inhibition and combination with immune checkpoint blockade (ICB) therapy.

Main Results:

  • DAL nanovaccine effectively targets DCs in lymph nodes.
  • Lovastatin component inhibits the MVA pathway, enhancing antigen presentation.
  • DAL promotes cytotoxic T cell infiltration and demonstrates antitumor effects in vivo.
  • DAL enhances the efficacy of ICB therapy.

Conclusions:

  • Metabolic regulation via the MVA pathway is a viable strategy for improving tumor vaccination.
  • The developed DAL nanovaccine shows significant potential for cancer prevention and treatment.
  • This approach offers a promising avenue for developing personalized tumor immunotherapies.

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