Viruses, and particularly genetically engineered, replication deficient viruses such as adenoviruses, poxviruses, MVA viruses, and baculoviruses which encode one or more antigens of interest, such as TB, malarial, and HIV antigens, are spray dried with a mannitol-cyclodextrin-trehalose-dextran (MCTD) to form a powder where the viability of the viruses are maintained at a suitable level for mass vaccinations after spray drying, and where the viability of the viruses are maintained at suitable level over a period of storage time, even in the presence of humidity.

Methods for generating immune responses using adenovirus vectors that allow multiple vaccinations with the same adenovirus vector and vaccinations in individuals with preexisting immunity to adenovirus are provided.

Provided are compounds that enhance the efficacy of viruses by increasing spread of the virus in cells, increasing the titer of virus in cells, or increasing the antigen expression from a virus, gene or trans-gene expression from a virus, or virus protein expression in cells. Other uses, compositions and methods of using same are also provided.

Methods for generating immune responses using adenovirus vectors that allow multiple vaccinations with the same adenovirus vector and vaccinations in individuals with preexisting immunity to adenovirus are provided.

Methods for generating immune responses using adenovirus vectors that allow multiple vaccinations with the same adenovirus vector and vaccinations in individuals with preexisting immunity to adenovirus are provided.

Disclosed herein a unique cell line system to generate a novel bovine adenovirus vector that provides more gene insertion capabilities and better immunogenicity for inserted antigens. The unique cell line is used for generating and growing of the new adenovirus vectors for gene delivery or recombinant vaccine production.

An engineered adenovirus penton base protomer, wherein the penton base protomer comprises a first RGD-loop, a second RGD-loop, a variable loop (V loop), an Adenovirus fiber protein binding cleft, and an N-terminal domain; wherein at least one of the first RGD-loop, the second RGD-loop, and the V loop comprises at least one inserted non-adenoviral antigenic polypeptide; and wherein the engineered adenovirus penton base protomer is capable of assembling into virus-like particles (VLPs).

Disclosed herein are compositions that include modified adenoviruses. Also disclosed are nucleotides, cells, and methods associated with the compositions including their use as vaccines. Also disclosed herein are viral vectors using TET promoter system and methods of producing viruses having the same.

The present invention relates to novel polypeptide scaffolds for optimized presentation of oligopeptides, polypeptide sequences, protein domains, proteins and protein complexes made up of two, several or many subunits. These oligopeptides, polypeptide sequences, protein domains and proteins presented by the polypeptide scaffolds of the invention can include antigenic entities that stimulate the immune system to trigger an immune response, for example for vaccination purposes, or for preparing antibodies or other binder molecules in cell culture, or in vitro in a test tube. In a preferred embodiment, the polypeptides of the invention are assembled into Virus Like Particles (VLPs) optimized for presentation of antigens useful in the context of vaccination against infectious agents or tumors.

There are provided antigens, vectors encoding the antigens, and antibodies and other binding compounds to the antigens and uses thereof in the prevention or treatment of malaria. In particular, compositions are provided comprising fragments of Reticulocyte-binding protein Homologue 5 (PfRH5). In particular, the invention provides fragments of PfRH5 rationally designed on the basis of the PfRH5 crystal structure, wherein said fragments which lack disordered regions, particularly the flexible N-terminal region and/or flexible central linker.