Abstract:
A substituted Norovirus capsid protein monomer, having only the P-domain, includes a foreign antigen inserted into one or more of three surface loops present on each P-domain monomer by molecular cloning. The antigen-P-domain monomer can assemble spontaneously into an octahedral, antigen-Norovirus P-particle, composed of 24 copies of the monomer. Each substituted P-domain monomer can contain one to three copies of the foreign antigen, for a total of 24-72 antigen copies on each antigen-P-particle. The antigen-P-particle is useful in methods for diagnosing, immunizing and treating individuals infected with a foreign virus and as a carrier for development of vaccines against many infectious and non-infectious diseases. The substituted monomer can be readily produced in E. coli and yeast, are highly stable and tolerate a wide range of physio-chemical conditions. The P-particle-VP8 chimeras may also serve as a dual vaccine, for example, against both rotavirus and norovirus.
Abstract:
Methods of thermally inactivating a rotavirus are provided according to the present invention which include exposing the rotavirus to a temperature in the range of about 50° C.-80° C., inclusive, for an incubation time sufficient to render the rotavirus incapable of replication or infection. The thermally inactivated rotavirus is antigenic and retains a substantially intact rotavirus particle structure. Vaccine compositions and methods of vaccinating a subject against rotavirus are provided which include generation and use of thermally inactivated rotavirus.
Abstract:
Described herein are compositions and methods useful for allowing for the absorption (passage) of agents of interest, such as therapeutic agents, across epithelial and mucosal barriers and/or into certain subcellular compartments of the cell, such as the recycling endosome (RE), Golgi, and the endoplasmic reticulum (ER).
Abstract:
The invention provides liquid rotavirus formulations that are suitable for oral administration to human infants. In particular the invention provides pharmaceutical compositions and vaccines, comprising a rotavirus antigen, a sugar and a carboxylate wherein said formulation has a pH of between pH 5.0 and pH 8.0 and comprises no phosphate or less than 5 mM phosphate. The invention also provides methods of preparing said rotavirus formulations and use thereof in the prevention or treatment of rotavirus associated diseases in humans.
Abstract:
This invention provides liquid rotavirus formulations that are suitable for oral administration to human infants. In particular, the invention provides pharmaceutical compositions and vaccines, comprising a rotavirus antigen, a sugar and a carboxylate, wherein said formulation has a pH of between pH 5.0 and pH 8.0 and comprises no phosphate or less than 5 mM phosphate. The invention also provides methods of preparing said rotavirus formulations and use thereof in the prevention or treatment or rotavirus associated diseases in humans.
Abstract:
Disclosed are a construct for expressing a rotavirus antigen complex loaded with a heterologous virus epitope, a vaccine composition containing the rotavirus antigen complex, a virus-like particle of rotavirus containing the rotavirus antigen complex, and a vaccine composition containing the virus-like particle of rotavirus. According to the present disclosure, an antigen complex containing a rotavirus antigen as well as a heterologous virus epitope and a virus-like particle of rotavirus containing the antigen complex can be produced in large scale at low cost. Thus, the present disclosure may be applied for research and development of novel complex vaccines for rotavirus and heterologous virus.
Abstract:
The present invention provides novel lyophilized rotavirus vaccine formulations and methods of their preparation. The formulations include vaccine stabilizers, resulting in a vaccine formulation with enhanced stability and minimal loss of potency. The rotavirus vaccine formulations comprise an advantageous ratio of a disaccharide (such as sucrose) to an amino acid (such as glycine). The lyophilization results in a virus formulation with 100% virus preservation and residual moisture from about 0.8% to 1.4%.
Abstract:
An injectable composition, capable of preventing or controlling parasitic, viral, or bacterial infections or diseases, for example scours, in pregnant cows and viral infections or diseases in neonatal calves by parenterally administering to each cow in a herd of pregnant cows, a dose of a combination composition comprising: (a) at least one inactivated viral component derived from rotavirus and/or coronavirus; (b) a macrocyclic lactone active compound; and (c) a pharmaceutically acceptable parenteral carrier and preservative. The injectable compositions which include eprinomectin result in extremely low milk residues.
Abstract:
The invention provides an attenuated rotavirus population comprising a single variant or substantially a single variant which is defined by a nucleotide sequence encoding at least one of the major viral proteins designated as VP4 and VP7. The invention particularly provides a rotavirus population designated as P43. The invention further provides a novel formulation for a rotavirus vaccine which is in the form of a quick dissolving tablet for immediate dissolution when placed on the tongue.
Abstract:
This invention relates to adjuvant formulations comprising various combinations of triterpenoids, sterols, immunomodulators, polymers, and Th2 stimulators; methods for making the adjuvant compositions; and the use of the adjuvant formulations in immunogenic and vaccine compositions with different antigens. This invention further relates to the use of the formulations in the treatment of animals.