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Recipients of influenza A (H1N1) vaccine in 1976 had an increased risk for the neurologic disorder Guillain-Barré syndrome (GBS). Anti-ganglioside antibodies, which might be associated with the development of GBS, were previously reported to be induced in mice immunized with an H1N1 vaccine of 1976 or another influenza vaccine. In this study we analyzed anti-ganglioside antibodies in human subjects...
Our previous studies have shown the adjuvanticity of an Onchocerca volvulus recombinant protein, Ov-ASP-1 (ASP-1), when administered in an aqueous formulation with bystander vaccine antigens or commercial vaccines. In this study, we reported a novel formulation that took advantage of the protein nature of the ASP-1 adjuvant by creating recombinant fusion protein vaccines linking the highly conserved...
In southern China, as well as in neighboring Asian regions, human adenovirus type 3 (HAdV-3) outbreaks have become very prevalent in recent years. To address this problem regionally and globally, a recombinant virus has been constructed, containing a full-length infectious genomic clone of HAdV-3, to act as a vaccine. This was constructed by using a bacterial homologous recombination mechanism and...
Development of vaccines against severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) is crucial in the prevention of SARS reemergence. The receptor-binding domain (RBD) of SARS-CoV spike (S) protein is an important target in developing safe and effective SARS vaccines. Our previous study has demonstrated that vaccination with adeno-associated virus encoding RBD (RBD-rAAV) induces high titer...
Development of effective vaccines against severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) is still a priority in prevention of re-emergence of SARS. Our previous studies have shown that the receptor-binding domain (RBD) of SARS-CoV spike (S) protein elicits highly potent neutralizing antibody responses in the immunized animals. But it is unknown whether RBD can also induce protective...
In the previous study, we had shown that live oral vaccination with Salmonella typhimurium delivering plasmid DNA-HBsAg (oral DNA vaccine) evoked a vigorous T cell response and a weak antibody response with predominant subclass IgG2a in mice, suggesting a significant involvement by professional antigen presenting cells (APC). In the present study, this possibility was further studied by infecting...
Therapeutic efficacy of HBsAg-anti-HBs-recombinant DNA harboring hepatitis B virus (HBV) S gene complex was compared with three other therapeutic vaccine candidates (recombinant HBsAg, HBsAg complexed to anti-HBs antibodies and naked plasmid DNA encoding the HBV S gene). After four injections at 3-week intervals, the most pronounced decrease of serum HBsAg, the highest titer of anti-HBs response,...
A novel vaccine for hepatitis B virus (HBV) was designed by putting a naked DNA vaccine carrying hepatitis B surface antigen (HBsAg) into live-attenuated Salmonella typhimurium. Mucosal immunization by the oral route in mice showed significantly stronger cytotoxic T lymphocyte (CTL) response than recombinant HBsAg vaccination (P<0.01 at an effector:target ratio of 100:1), while comparable to intramuscular...
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