Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The Fc-fused receptor binding domain (RBD-Fc) vaccine for SARS-CoV-2 has garnered significant attention for its capacity to provide effective and specific immune protection. However, its immunogenicity is limited, highlighting the need for improvement in clinical application. Nanoparticle delivery has been shown to be an effective method for enhancing antigen immunogenicity. In this study, we developed bivalent nanoparticle recombinant protein vaccines by assembling the RBD-Fc of SARS-CoV-2 and Fc-binding homo-oligomers o42.1 and i52.3 into octahedral and icosahedral nanoparticles. The formation of RBD-Fc nanoparticles was confirmed through structural characterization and cell binding experiments. Compared to RBD-Fc dimers, the nanoparticle vaccines induced more potent neutralizing antibodies (nAb) and stronger cellular immune responses. Therefore, using bivalent nanoparticle vaccines based on RBD-Fc presents a promising vaccination strategy against SARS-CoV-2 and offers a universal approach for enhancing the immunogenicity of Fc fusion protein vaccines.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.antiviral.2024.105917 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Next-Generation Nanoparticle-Enabled mRNA Vaccines in the Treatment of COVID-19.
Crit Rev Ther Drug Carrier Syst
September 2025
The emergence of messenger ribonucleic acid (mRNA) vaccines as an alternative platform to traditional vaccines has been accompanied by advances in nanobiotechnology, which have improved the stability and delivery of these vaccines through novel nanoparticles (NPs). Specifically, the development of NPs for mRNA delivery has facilitated the loading, protection and release of mRNA in the biological microenvironment, leading to the stimulation of mRNA translation for effective intervention strategies. Intriguingly, two mRNA vaccines, BNT162b2 (Pfizer-BioNTech) and mRNA-1273 (Moderna), have been permitted for emergency usage authorization to prevent COVID-19 infection by USFDA.
View Article and Find Full Text PDFDevelopment of Receptor-Binding Domain (RBD)-Loaded PEG-PCL Nanoparticle Formulations Against SARS-CoV-2.
Macromol Biosci
September 2025
Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Tandogan, Ankara, Turkey.
The COVID-19 pandemic caused by the novel coronavirus SARS-CoV-2 has highlighted the critical need for safe and effective vaccines. In this study, subunit nanovaccine formulations were developed using the receptor-binding domain (RBD) of the SARS-CoV-2 spike (S) protein encapsulated in polymeric nanoparticles composed of poly(ethylene glycol)-block-poly(ε-caprolactone) (PEG-PCL). Two surfactants, poly(vinyl alcohol) (PVA) and sodium cholate (SC), were evaluated during formulation via a modified water-in-oil-in-water (w/o/w) emulsion-solvent evaporation method.
View Article and Find Full Text PDFA Safe and Broad-spectrum SARS-CoV-2 mRNA Vaccine with a New Delivery System for In-situ Expression.
Virol Sin
September 2025
State Key Laboratory of Virology and Biosafety, RNA Institute, College of Life Sciences and Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, 430072, China; Institute for Vaccine Research at Animal Bio-safety Level Ⅲ Laboratory, Wuhan University, Wuhan, 430071, China.
Since the outbreak of SARS-CoV-2 in late 2019, the cumulative number of confirmed cases worldwide has surpassed 778 million, and the number of deaths has exceeded 7 million, posing a significant threat to human life and health while inflicting enormous losses on the global economy. At the stage where sequential immunization is recommended, there is a pressing demand for mRNA vaccines that can be rapidly adapted to new sequences, are easy to industrialize, and exhibit high safety and effectiveness. We developed a lipid nanoparticle (LNP) system, designated as WNP, which facilitates essentially in situ expression at the injection site and results in lower levels of pro-inflammatory factors in the liver, thus enhancing its safety compared to liver-targeted alternatives.
View Article and Find Full Text PDFEmerging lipid nanoparticle systems capable of efficient intramuscular RNA delivery.
Nanomedicine (Lond)
September 2025
Key Laboratory of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China.
Lipid nanoparticles (LNPs) enable RNA delivery, primarily via intramuscular (IM) injection, catalyzing breakthroughs like the Pfizer-BioNTech and Moderna COVID-19 vaccines. LNPs encapsulate RNA, using ionizable lipids for endosomal escape and PEG-lipids for stability. IM administration leverages muscle tissue's immune-rich environment, enabling localized antigen production, reduced systemic toxicity, and scalability.
View Article and Find Full Text PDFSpleen-targeted NeoPol-mL242 mRNA vaccine induces robust T-cell responses in a hepatocellular carcinoma model.
J Nanobiotechnology
September 2025
Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, Shanghai, 200241, China.
Personalized neoantigen peptide vaccines have shown remarkable anti-tumor activity across diverse cancer types. With the rapid advancement of messenger RNA (mRNA) delivery technologies during the coronavirus disease of 2019 (COVID-19) pandemic, mRNA-based cancer vaccines have emerged as a promising therapeutic approach because of their scalable production, safety, and capacity to elicit potent immune responses. However, the predominant distribution of mRNA delivery systems in the liver may lead to hepatic damage and restrict therapeutic accessibility.
View Article and Find Full Text PDF