mRNA vaccines take advantage of the mechanism that our cells use to produce proteins. Our cells produce proteins based on the knowledge contained in our DNA; each gene encodes a unique protein. The genetic information is essential, but cells cannot use it until mRNA molecules convert it into instructions for producing specific proteins. mRNA vaccinations provide ready-to-use mRNA instructions for constructing a specific protein. BNT162b2 (Pfizer-BioNTech) and mRNA-1273 (Moderna) both are newly approved mRNA-based COVID-19 vaccines that have shown excellent protection and efficacy. In total, there are five more mRNA-based vaccine candidates for COVID-19 under different phases of clinical development. This review is specifically focused on mRNA-based vaccines for COVID-19 covering its development, mechanism, and clinical aspects.
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http://dx.doi.org/10.3390/vaccines11030507 | DOI Listing |
Front Immunol
January 2025
RNAimmune, Inc., Germantown, MD, United States.
Background: The unrelenting emergence of SARS-CoV-2 variants has significantly challenged the efficacy of existing COVID-19 vaccines. Enhancing the stability and immunogenicity of the spike protein is critical for improving vaccine performance and addressing variant-driven immune evasion.
Methods: We developed an mRNA-based vaccine, RV-1730, encoding the Delta variant spike protein with the S6P mutation to enhance stability and immunogenicity.
Commun Med (Lond)
January 2025
URC EST, Sorbonne Université, Paris, France.
Background: We previously reported the safety and immunogenicity data from a randomized trial comparing the booster responses of vaccinees who received monovalent (MV) recombinant protein Beta-variant (MVB.1.351) and MV ancestral protein (MVD614) vaccines with AS03 adjuvant (Sanofi/GSK) to booster response of vaccinees who received mRNA MV ancestral strain BNT162b2 vaccine (Pfizer-BioNTech).
View Article and Find Full Text PDFGene
January 2025
State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China; Department of Dermatology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA. Electronic address:
Advances in molecular medicine and biotechnology have demonstrated messenger RNA (mRNA)-based therapies to be a promising therapeutic modality for infectious diseases, genetic disorders, and cancers. However, key challenges persist, including low translation efficiency and short half-life of exogenous mRNA. The untranslated regions (UTRs) influence important parameters like mRNA stability and translation efficiency.
View Article and Find Full Text PDFLancet Infect Dis
January 2025
Novavax, Gaithersburg, MD, USA.
Background: Authorities globally recommended a monovalent omicron XBB.1.5-based COVID-19 vaccine for the 2023-24 season.
View Article and Find Full Text PDFNarra J
December 2024
Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.
The waning immunity following the COVID-19 vaccination become a significant concern and the immunological dynamics of vaccine-induced antibodies after vaccination need to be explored. The aim of this study was to compare anti-SARS-CoV-2 receptor-binding domain (RBD) antibody levels before and after a booster dose with heterologous COVID-19 vaccine and to identify factors influencing the levels after receiving the booster dose. A cross-sectional study was conducted in which individuals who received primary doses of CoronaVac and a booster dose with an mRNA-based vaccine were recruited using a purposive sampling technique.
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