The invention relates to a method of increasing the yield of virus, virus particles, or viral vectors from host cells in a bioreactor. The invention provides a reproducible and robust method and system of determining and controlling the optimal time of infection of host cells using a correlation of process air parameters including Air flow, O.sub.2 flow, and respective trends thereof resulting in increased virus yield.

The present invention relates to a method for rescue of Vesicular Stomatitis Virus (VSV) from DNA in a HEK293 cell line or a HEK293 cell line adapted to suspension growth comprising (a) providing cells from a HEK293 cell line or a HEK293 cell line adapted to suspension growth in cell culture, (b) transfecting the cells with at least one plasmid, wherein the at least one plasmid comprises (i) an expression cassette comprising a VSV genomic cDNA; (ii) at least one expression cassette encoding VSV nucleoprotein (N) protein, VSV phosphoprotein (P) protein, and VSV large (L) protein; and (iii) an expression cassette encoding SV40 Large T antigen; (c) culturing the transfected cells; and (d) harvesting the cell culture supernatant comprising the rescued VSV. Also provided is the use of a HEK293 cell line or a HEK293 cell line adapted to suspension growth for rescue of Vesicular Stomatitis Virus (VSV) or the use of a plasmid encoding SV40 Large T antigen for rescue of Vesicular Stomatitis Virus (VSV) in a HEK293 cell line or a HEK293 cell line adapted to suspension growth HEK293-F cells by means of transient transfection.

The present relation relates to recombinant vesicular stomatitis virus for use as prophylactic and therapeutic vaccines for infectious diseases of AIDS. The present invention encompasses the preparation and purification of immunogenic compositions which are formulated into the vaccines of the present invention.

Provided are compounds of Formula (II) 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. ##STR00001##

The present invention relates to the field of upstream and downstream processing and provides a process for producing a purified rhabdovirus from a cell culture, preferably a purified oncolytic rhabdovirus and in particular a vesicular stomatitis virus, including pharmaceutical compositions comprising the rhabdovirus.

The invention relates to a method of increasing the yield of virus, virus particles, or viral vectors from host cells in a bioreactor. The invention provides a reproducible and robust method and system of determining and controlling the optimal time of infection of host cells using a correlation of process air parameters including Air flow, O.sub.2 flow, and respective trends thereof resulting in increased virus yield.

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.

The invention relates to a method of increasing the yield of virus, virus particles, or viral vectors from host cells in a fixed-bed bioreactor by specifically modifying the dissolved oxygen levels in the media.

Certain embodiments are directed generally to compositions and methods related to recombinant vesicular stomatitis virus vectors (ΔGrVSV) encoding Crimean-Congo Hemorrhagic Fever glycoprotein precursor (CCHFV-GPC) and forming a recombinant vesicular stomatitis virus vector encoding Crimean-Congo Hemorrhagic Fever glycoprotein precursor (ΔGrVSV-CCHFV-GPC).

The present relation relates to recombinant vesicular stomatitis virus for use as prophylactic and therapeutic vaccines for infectious diseases of AIDS. The present invention encompasses the preparation and purification of immunogenic compositions which are formulated into the vaccines of the present invention.