DNA vaccines against rotavirus infections
First Claim
1. A method of eliciting an immune response against a rotavirus in a vertebrate, said method comprising administrating to the vertebrate a plasmid vector comprising one or more isolated nucleotide sequences each encoding a rotavirus polypeptide selected from the group consisting of VP4, VP6, and VP7, and transcriptional and translational regulatory sequences operably linked to the isolated nucleotide sequences, whereby expression of said nucleotide sequences in one or more cells in the vertebrate elicits a humoral immune response, a cell-mediated immune response, or both, against the rotavirus.
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Abstract
This invention relates to methods of eliciting an immune response and/or protective immunity in a vertebrate by introducing into the vertebrate a DNA vaccine which consists essentially of DNA encoding an antigen or antigens, e.g., capsid proteins or polypeptides, of rotavirus. The uptake of the DNA vaccine by a host vertebrate results in the expression of the capsid protein, thereby eliciting humoral or cell-mediated immune responses, or both, which can provide protection against infection and/or prevent clinically significant rotavirus-caused disease. In addition, the invention demonstrates that an internal viral antigen provides protective immunity in a host. The host can be any vertebrate, including birds, piglets, and humans.
66 Citations
17 Claims
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1. A method of eliciting an immune response against a rotavirus in a vertebrate, said method comprising administrating to the vertebrate a plasmid vector comprising one or more isolated nucleotide sequences each encoding a rotavirus polypeptide selected from the group consisting of VP4, VP6, and VP7, and transcriptional and translational regulatory sequences operably linked to the isolated nucleotide sequences, whereby expression of said nucleotide sequences in one or more cells in the vertebrate elicits a humoral immune response, a cell-mediated immune response, or both, against the rotavirus.
- 2. A method of eliciting a protective immunity against a rotavirus infection in a vertebrate, said method comprising administering to the vertebrate a plasmid vector comprising one or more isolated nucleotide sequence each encoding a rotavirus polypeptide selected from the group consisting of VP4, VP6, and VP7, and transcriptional and translational regulatory sequences operably linked to the isolated nucleotide sequences, whereby expression of said nucleotide sequences in one or more cells in the vertebrate elicits a humoral immune response, a cell-mediated immune response, or both against the rotavirus in the vertebrate, and whereby the vertebrate is protected from the disease caused by subsequent exposure to the rotavirus.
Specification