Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (1): 20240245.doi: 10.7503/cjcu20240245

• Article • Previous Articles     Next Articles

Supramolecular Nanovaccines for Melanoma Immunotherapy

CUI Yanqi, FENG Wenjie, LIU Yi()   

  1. State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012,China
  • Received:2024-05-20 Online:2025-01-10 Published:2024-08-13
  • Contact: LIU Yi E-mail:yiliuchem@jlu.edu.cn
  • Supported by:
    the Science and Technology Development Program of Changchun City, China(No.23***13)

Abstract:

As an important part of tumor immunotherapy, nanovaccines eradicate tumor mainly through activating the body’s immune system. However, the immunosuppressive microenvironment can largely reduce the therapeutic effect of nanovaccines in tumor tissues. Therefore, the preparation of nanovaccines that can both reverse the immunosuppressive microenvironment of tumor tissues and activate the antitumor immune response is of great significance for the development of tumor immunotherapy. In this study, the Fe/Shik supramolecular nanostructures were constructed by utilizing the coordination interaction between Fe3+ and Shikonin(Shik). Furthermore, OVA/R837@Fe/Shik nanovaccines were prepared by loading ovalbumin(OVA, B16-OVA tumor antigen) and R837 (TLR7 agonist, adjuvant) on the basis of Fe/Shik nanostructures. Thanks to the good colloidal stability and antitumor activity, the nanovaccines can specifically disassemble and release Fe2+, Shik, OVA, R837 in the tumor microenvironment, eliciting immunogenic cell death by ferroptosis and necroptosis of tumor cells. The released cell lysates cooperate with OVA and adjuvants to stimulate dendritic cells maturation, promoting the activation and infiltration of cytotoxic T-lymphocytes, repolarization of macrophage, thereby activating the antitumor immune response. The study effectively overcames the inhibitory effect of the immunosuppressive microenvironment of tumor tissues on the nanovaccines, and provide a new strategy for tumor immunotherapy.

Key words: Nanovaccines, Ferroptosis, Necroptosis, Immunotherapy, Immunogenic cell death

CLC Number: 

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