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The constant mutation of SARS-CoV-2 has led to the continuous appearance of viral variants and their pandemics and has improved the development of vaccines with a broad spectrum of antigens to curb the spread of the virus. The work described here suggested a novel vaccine with a virus-like structure (VLS) composed of combined mRNA and protein that is capable of stimulating the immune system in a manner similar to that of viral infection. This VLS vaccine is characterized by its ability to specifically target dendritic cells and/or macrophages through S1 protein recognition of the DC-SIGN receptor in cells, which leads to direct mRNA delivery to these innate immune cells for activation of robust immunity with a broad spectrum of neutralizing antibodies and immune protective capacity against variants. Research on its composition characteristics and structural features has suggested its druggability. Compared with the current mRNA vaccine, the VLS vaccine was identified as having no cytotoxicity at its effective application dosage, while the results of safety observations in animals revealed fewer adverse reactions during immunization.
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http://dx.doi.org/10.1080/21645515.2025.2473183 | DOI Listing |
Front Bioeng Biotechnol
August 2025
NHC Key Laboratory of Nuclear Technology Medical Transformation, Mianyang Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Mianyang, China.
Cerebral ischemic stroke (CIS) is a severe cerebrovascular disease that poses numerous challenges in diagnosis and treatment, primarily attributed to blood-brain barrier (BBB) constraints and inherent drug targeting limitations. Biomimetic membrane nanotechnology, as an emerging therapeutic approach, offers a novel therapeutic strategy by emulating biological membrane structures and functions. This review comprehensively examines biomimetic nanomedicines (BMNPs) in CIS management, encompassing preparation methodologies, material characterization, and specific diagnostic/therapeutic applications.
View Article and Find Full Text PDFFront Immunol
September 2025
Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, United States.
The durability of vaccine-induced protection is a critical parameter in assessing the overall quality and long-term effectiveness of a vaccine. While the lifelong immunity conferred by certain vaccines is well recognized, the molecular components that underpin such long-lasting protection remain poorly understood. This knowledge gap is further complicated by the frequent inclusion of adjuvant formulations in licensed vaccines, the mechanisms of which are often multifaceted and not fully elucidated.
View Article and Find Full Text PDFBiotechnol Biotechnol Equip
February 2025
Department of Bioengineering, University of Washington, Seattle, WA, USA.
Phage-like particles (PLPs) are fabricated self-assembling nanoparticles derived from the structural elements of bacteriophages. These particles have biotechnological utility because of the ability to easily modify surface chemistry and compartmentalize nucleic acids or other materials. A consequential implementation of PLPs in diagnostics is as process controls in nucleic acid amplification tests, where control RNAs are packaged within the protein capsid and protected from degradation by RNases in the sample matrix.
View Article and Find Full Text PDFbioRxiv
August 2025
Gladstone Institutes, San Francisco, CA 94158, USA.
mRNA vaccines emerged as a leading vaccine technology during the COVID-19 pandemic. However, their sustained protective efficacies were limited by relatively short-lived antibody responses and the emergence of SARS-CoV-2 variants, necessitating frequent and variant-updated boosters. We recently developed the ESCRT- and ALIX-binding region (EABR) mRNA vaccine platform, which encodes engineered immunogens that induce budding of enveloped virus-like particles (eVLPs) from the plasma membrane, thereby resulting in presentation of immunogens on cell surfaces and eVLPs.
View Article and Find Full Text PDFUnlabelled: Human noroviruses ( s) are the leading cause of viral gastroenteritis with ≥80% of infections caused by the GII genogroup. HuNoVs are non-enveloped, with an icosahedral capsid composed of 90 dimers of the major capsid protein VP1, which encloses a minor structural protein, VP2, and a VPg-linked positive sense ssRNA genome. Although the atomic structure of the icosahedral capsid formed by VP1 is well characterized using crystallography and cryo-electron microscopy analyses of HuNoV virus-like particles (VLPs), the structures and the localization of VP2 and VPg inside the capsid, how they are incorporated into the capsid, and whether this process requires interactions between them remain unresolved.
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