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Prediction of immunogenicity is a substantial barrier in vaccine design. Here, a molecular dynamics approach to assessing the immunogenicity of nanoparticles based on structure is presented. Molecular properties of epitopes on nonenveloped viral particles are quantified via a set of metrics. One such metric, epitope fluctuation (and implied flexibility), is shown to be inversely correlated with immunogenicity...
Simulations of virus-like particles needed for computer-aided vaccine design highlight the need for new algorithms that accelerate molecular dynamics. Such simulations via conventional molecular dynamics present a practical challenge due to the millions of atoms involved and the long timescales of the phenomena of interest. These phenomena include structural transitions, self-assembly, and interaction...
Trichinella spiralis heat shock protein 70 (Ts-Hsp70) is a protective antigen that induces partial protective immunity against T. spiralis infection in mice. To determine whether dendritic cells are involved in the mechanism responsible for the protection induced by Ts-Hsp70, mouse bone marrow-derived dendritic cells (DCs) were incubated with recombinant Ts-Hsp70 (rTs-Hsp70), and the DC-secreted cytokines...
Trichinella spiralis paramyosin (Ts-Pmy) is a protective antigen that induces partial immunity against T. spiralis infection in mice. To identify protective epitope of Ts-Pmy, a monoclonal antibody (mAb) 7E2 against the recombinant protein was generated, which partially protected against T. spiralis infection following passive transfer. The mAb was used to screen a random phage-displayed peptide library...
We have previously reported that Ts87 is an immunodominant antigen that induces protective immunity against Trichinella spiralis larval challenge. In this study, the Ts87 gene was cloned into an expression plasmid, pVAX1, and the recombinant Ts87 DNA was transformed into attenuated Salmonella typhimurium strain SL7207. Oral immunization of mice with Ts87 DNA delivered in S. typhimurium elicited a...
Heat shock proteins (HSPs) are known to act as an effective molecular adjuvant to enhance the induction of antigen peptide-specific cellular immunity, when coupled with the antigen or peptide. Hantaan virus (HTNV) nucleocapsid protein (NP) is relatively conserved among hantaviruses and highly immunogenic in both animals and humans. To analyze the influence of HSP70 on NP vaccine potency, and evaluate...
Heat shock proteins (HSPs) have been shown to act as adjuvants when coadministered with peptide antigens or given as fusion proteins and enhance the vaccination efficiency. To evaluate the enhancement of the potency of Hantaan virus (HTNV) nucleocapsid protein (NP) immunogenicity by heat shock protein 70 (HSP70), we developed a novel chimeric HTNV S-HSP70 DNA vaccine plasmid by genetically linking...
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