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Mucosal vaccination, which is shown to elicit systemic and mucosal immune responses, serves as a non-invasive and convenient alternative to parenteral administration, with stronger capability in combatting diseases at the site of entry. The exploration of potent mucosal adjuvants is emerging as a significant area, based on the continued necessity to amplify the immune responses to a wide array of...
WH1fungin, a surfactin lipopeptide from Bacillus amyloliquefaciens WH1, can be used as an adjuvant for eliciting strong immune response by parenteral immunization. In this study, WH1fungin was firstly reported as an oral immunoadjuvant. In mice, WH1fungin markedly enhanced the immune response to co-administered protein antigens (OVA or GST), similar to levels elicited by CTB, but no immune response...
GnRH is a promising target in hormone-dependent cancer immunotherapy. In our previous study, we have designed and purified a peptide vaccine GhM (GnRH 3 -hinge-MVP) by use of the bioprocess system based on asparaginase. Active immunization with GhM in the presence of CFA/IFA evoked strong humoral response. In this study, the motif NRLLLTG with high affinity to nanoparticle carrier VLP HBcΔ-SBD...
Hepatitis B virus core (HBc) protein has been proved to be an attractive carrier for foreign epitopes, and can display green fluorescent protein (GFP) on its surface. The structure of substrate-binding domain of DnaK [DnaK (394-504 aa), DnaK SBD] is similar to GFP, we therefore reasoned that DnaK SBD might also be tolerated. Electron microscopic observations suggested that the chimeric proteins containing...
In search of a convenient and pain-free route of administration of DNA vaccine against atherosclerosis, the plasmid pCR-X8-HBc-CETP (pCETP) encoding B-cell epitope of cholesteryl ester transfer protein C-terminal fragment displayed by Hepatitis B virus core particle was condensed with chitosan to form chitosan/pCETP nanoparticles. Cholesterol-fed rabbits were then intranasally immunized with the chitosan/pCETP...
In the following study, we prepared a double-chain miniprotein with each chain containing three linear repeats of the self-peptide gonadotropin-releasing hormone (GnRH 3 ), the hinge region of human IgG1 (hinge), and a T-helper epitope from the measles virus protein (MVP). The di-GnRH 3 -hinge-MVP miniprotein was conjugated to purified recombinant heat shock protein 65 (Hsp65) of Mycobacterium...
To improve the weak immunogenicity of peptide P277, the recombinant expression plasmid pET28-Hsp65-6×P277 was constructed by inserting 5×P277 which was amplified by PCR into the vector pET28-Hsp65-P277. It was transformed into Escherichia coli BL21 (DE3) and the fusion protein (Hsp65-6×P277) was expressed effectively as soluble protein after inducing by lactose. The fusion protein was purified by...
Various formulations of the Plasmodium falciparum merozoite surface antigen, MSA-2, were made and tested in animals in order to select one for use in human vaccine trials. Recombinant constructs representing both major allelic forms of MSA-2 were formulated with a range of adjuvants and used to immunize rabbits, mice and sheep. After immunization, antibody responses obtained with the most potent...
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