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Biogenic silver nanoparticle as an adjuvant in an S1 subunit recombinant vaccine.
Braz J Microbiol
January 2025
Center of Technological Development, Biotechnology, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil.
Adjuvants are crucial for maintaining specific, protective, and long-lasting immunity. Here, we aimed to evaluate the antigenic and immunogenic activity of a recombinant form of the S1 domain of the Spike protein, associated with biogenic silver nanoparticles (bio-AgNP) and Alhydrogel as an alternative and conventional adjuvant, respectively, for a SARS-CoV-2 subunit vaccine. We produced and evaluated the antigenicity of the recombinant S1 (rS1) protein by testing its recognition by antibodies present in SARS-CoV-2 positive human serum.
View Article and Find Full Text PDFOptimization of Conditions for Expression of Dengue Serotype 2 EDIII Protein in and Immune Responses of Adjuvant-Free EDIII Ferritin Nanoparticles Against Dengue Virus in BALB/c Mice.
Viruses
January 2025
Laboratory of Infectious Diseases, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea.
Self-assembling ferritin nanoparticle technology is a widely used vaccine development platform for enhancing the efficacy of subunit vaccines by displaying multiple antigens on nanocages. The dengue virus (DENV) envelope domain III (EDIII) protein, the most promising antigen for DENV, has been applied in vaccine development, and it is essential to evaluate the relative immunogenicity of the EDIII protein and EDIII-conjugated ferritin to show the efficiency of the ferritin delivery system compared with EDIII. In this study, we optimized the conditions for the expression of the EDIII protein in , protein purification, and refolding, and these optimization techniques were applied for the purification of EDIII ferritin nanoparticles.
View Article and Find Full Text PDFAnti-Human Leukocyte Antigen Antibody Detection from Terasaki's Humoral Theory to Delisting Strategies in 2024.
Int J Mol Sci
January 2025
Immunology Department, University Hospital Marqués de Valdecilla, 39008 Santander, Spain.
The human leukocyte antigen (HLA) system plays a critical role in transplant immunology, influencing outcomes through various immune-mediated rejection mechanisms. Hyperacute rejection is driven by preformed donor-specific antibodies (DSAs) targeting HLAs, leading to complement activation and graft loss within hours to days. Acute rejection typically occurs within six months post-transplantation, involving cellular and humoral responses, including the formation of de novo DSAs.
View Article and Find Full Text PDFp54-Fc-Labeled Gold Nanoparticle-Based Lateral Flow Strip-Assisted Portable Devices for Rapid and Quantitative Point-of-Care Detection of ASFV Antibodies.
Biosensors (Basel)
January 2025
Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
In this study, a novel rapid immunochromatographic (IC) test for African swine fever virus (ASFV) antibodies is presented. An immunochromatographic test (IC) is a detection technique that combines membrane chromatography with immunolabeling. This approach saves time for antibody preparation, resulting in a shorter production cycle.
View Article and Find Full Text PDFElevated estradiol in a prepubertal female: within-laboratory systematic and practical interference screening.
Scand J Clin Lab Invest
January 2025
Department of Medical Biochemistry, Ministry of Health, Ankara Bilkent City Hospital, Ankara, Turkey.
Analytical errors related to endogenous or exogenous substances are a cause of unnecessary investigation, intervention, and patient concern especially in immunoassay platforms. In this report, we systematically screened for estradiol interference using a practical algorithm. For extended research in interference screening, repeated estradiol measurements for control and case samples were carried out for method comparison (three immunoassay platforms and one liquid chromatography-mass spectrometry (LC-MS/MS) measurement), dilution test, polyethylene glycol (PEG) precipitation, and heterophile antibody blocking tube.
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