Volume 63, Issue 13 e202318515
Research Article

Development of Mannosylated Lipid Nanoparticles for mRNA Cancer Vaccine with High Antigen Presentation Efficiency and Immunomodulatory Capability

Jiaqi Lei

Jiaqi Lei

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

These authors contributed equally to the work.

Contribution: Data curation (lead), ​Investigation (lead), Writing - original draft (lead)

Search for more papers by this author
Dr. Shaolong Qi

Dr. Shaolong Qi

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

These authors contributed equally to the work.

Contribution: Data curation (equal), ​Investigation (equal)

Search for more papers by this author
Dr. Xinyang Yu

Dr. Xinyang Yu

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

Contribution: ​Investigation (supporting), Writing - original draft (supporting)

Search for more papers by this author
Xiaomin Gao

Xiaomin Gao

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

Contribution: ​Investigation (supporting)

Search for more papers by this author
Kai Yang

Kai Yang

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

Contribution: ​Investigation (supporting)

Search for more papers by this author
Dr. Xueyan Zhang

Dr. Xueyan Zhang

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

Contribution: ​Investigation (supporting)

Search for more papers by this author
Meiqi Cheng

Meiqi Cheng

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

Search for more papers by this author
Dr. Bing Bai

Dr. Bing Bai

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

Contribution: ​Investigation (supporting)

Search for more papers by this author
Yunxuan Feng

Yunxuan Feng

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

Contribution: ​Investigation (supporting)

Search for more papers by this author
Meixin Lu

Meixin Lu

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

Contribution: ​Investigation (supporting)

Search for more papers by this author
Yangfan Wang

Yangfan Wang

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

Contribution: Writing - original draft (supporting)

Search for more papers by this author
Hongjian Li

Hongjian Li

School of Medicine, Tsinghua University, 100084 Beijing, P. R. China

Contribution: ​Investigation (supporting)

Search for more papers by this author
Prof. Dr. Guocan Yu

Corresponding Author

Prof. Dr. Guocan Yu

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084 Beijing, P. R. China

School of Medicine, Tsinghua University, 100084 Beijing, P. R. China

Contribution: Conceptualization (lead), Funding acquisition (lead), Supervision (lead), Writing - review & editing (lead)

Search for more papers by this author
First published: 06 February 2024
Citations: 6

Graphical Abstract

In order to promote the antitumor efficacy of mRNA vaccines, sweet lipid nanoparticles (STLNPs-Man) are developed by incorporating a mannosylated ionizable lipid to enhance the uptake by DCs through the mannose receptor-mediated endocytosis. Interestingly, STLNPs-Man exhibits the ability to downregulate the expression of cytotoxic T-lymphocyte-associated protein 4 on T cells through the blockade of CD206/CD45 axis to further potentiate the antitumor immunity.

Abstract

Insufficient accumulation of lipid nanoparticles (LNPs)-based mRNA vaccines in antigen presenting cells remains a key barrier to eliciting potent antitumor immune responses. Herein, we develop dendritic cells (DCs) targeting LNPs by taking advantage of mannose receptor-mediated endocytosis. Efficient delivery of mRNA to DCs is achieved in vitro and in vivo utilizing the sweet LNPs (STLNPs-Man). Intramuscular injection of mRNA vaccine (STLNPs-Man@mRNAOVA) results in a four-fold higher uptake by DCs in comparison with commercially used LNPs. Benefiting from its DCs targeting ability, STLNPs-Man@mRNAOVA significantly promotes the antitumor performances, showing a comparable therapeutic efficacy by using one-fifth of the injection dosage as the vaccine prepared from normal LNPs, thus remarkably avoiding the side effects brought by conventional mRNA vaccines. More intriguingly, STLNPs-Man@mRNAOVA exhibits the ability to downregulate the expression of cytotoxic T-lymphocyte-associated protein 4 on T cells due to the blockade of CD206/CD45 axis, showing brilliant potentials in promoting antitumor efficacy combined with immune checkpoint blockade therapy.

Conflict of interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.