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, O2 flow, and respective trends thereof resulting in increased virus yield.
A dry powder Norovirus vaccine is provided, which comprises at least two Norovirus antigens representing different genogroups. The vaccine may be produced by formulation with a mixture of different antigens or combination of monovalent powders with each containing one antigen. The formulated vaccine is suitable for mucosal administration and soluble in aqueous solutions for parenteral administration. A method of immunization is also provided, which comprises at least one administration of the vaccine via mucosal and/or parental route. The immunization may have multiple administrations of the vaccine, i.e., one or more immunizations via a mucosal route followed by one or more immunizations via a parenteral route or vice versa, to maximize both mucosal and systemic immune responses and protection against Norovirus infections.
Disclosed is a process for growing adherent cells in a containment box of a multi-parallel bioreactor, including: seeding the adherent cells on a carrier held in a culture dish; transferring the adherent cells on the carrier to a containment box of the multi-parallel bioreactor; and growing the adherent cells at a containment box while agitating the media at an impeller speed between 200 rpm to a 1200 rpm.
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, O2 flow, and respective trends thereof resulting in increased virus yield.
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.
A dry powder norovirus vaccine is provided, which comprises at least two norovirus antigens representing different genogroups. The vaccine may be produced by formulation with a mixture of different antigens or combination of monovalent powders with each containing one antigen. The formulated vaccine is suitable for mucosal administration and soluble in aqueous solutions for parenteral administration. A method of immunization is also provided, which comprises at least one administration of the vaccine via mucosal and/or parental route. The immunization may have multiple administrations of the vaccine, i.e., one or more immunizations via a mucosal route followed by one or more immunizations via a parenteral route or vice versa, to maximize both mucosal and systemic immune responses and protection against norovirus infections.
The present invention relates to recombinant viral vectors and methods of using the recombinant viral vectors to induce an immune response to influenza A viruses. The invention provides recombinant viral vectors based, for example, on the non-replicating modified vaccinia virus Ankara. When administered according to methods of the invention, the recombinant viral vectors are designed to be cross-protective and induce heterosubtypic immunity to influenza A viruses.
The present invention relates to a method for production of continuous cell lines comprising providing living cells of an animal or a human, irradiating said cells with UV light, proliferating said cells and selecting multiplying cells as cells of a continuous cell line.
The present invention relates to recombinant viral vectors and methods of using the recombinant viral vectors to induce an immune response to influenza A viruses. The invention provides recombinant viral vectors based, for example, on the non-replicating modified vaccinia virus Ankara. When administered according to methods of the invention, the recombinant viral vectors are designed to be cross-protective and induce heterosubtypic immunity to influenza A viruses.
The present invention relates to a novel replication deficient influenza virus comprising a modified NS1 segment coding for a NS1 protein lacking a functional RNA binding domain and functional effector domain and having a heterologous sequence inserted between the splice donor site and the splice acceptor site of the NS gene segment. The virus can be used as vector for expression of various proteins like chemokines, cytokines or antigenic structures and to produce vaccines. A fusion peptide comprising part of the N-terminus of an NS1 protein and a signal sequence fused to the C-terminus of said NS1 peptide is also provided.
The disclosure relates to the development of improved methods for quantifying antigen in a vaccine composition in the absence of available antigen standards. More specifically, the disclosure provides fast and robust methods of separating antigens from vaccine compositions, comprising the steps of solubilizing antigen without detergent and without alkylation, using acidification to prevent antigen subtypes from binding again, isolating antigen subtypes with chromatography, and quantifying the eluted antigen with amino acid analysis. The methods of the disclosure are applicable for use with a variety of antigens, thereby providing an improved method in the art of vaccine manufacturing to date.
A liquid or liquid-frozen composition comprising: a modified vaccinia Ankara (MVA) virus or variant or derivative thereof and mannitol, wherein mannitol is the sole stabilization agent of the composition. The mannitol may provide a stabilizing effect at 0 to +10° C. or in a liquid-frozen composition, for example between −10° C. and −30° C. or between −20° C. and −23.5° C. The MVA may be used as a vaccine or for use in gene therapy, virotherapy, immunotherapy, or cancer therapy in a mammal, preferably a human.
The present invention provides a novel influenza virus wherein both the NS and the PB1 gene segments are modified and wherein the PB1-F2 open reading frame is modified by introduction of at least one stop codon. Specifically, the influenza virus is lacking functional NS1 and PB1-F2 proteins. Additionally, a vaccine formulation comprising the modified influenza virus is provided and its use for prevention of influenza vaccination.
The present invention provides a high growth reassortant influenza A virus having at least two gene segments of seasonal or pandemic strain origin, a PB1 gene segment of A/Texas/1/77 strain origin and a PA gene segment of A/Puerto Rico/8/34 (H1N1) origin coding for a PA protein comprising at least one amino acid modification at any one of positions 10, 275, 682, according to SEQ ID No. 1. Further provided are vaccine formulations comprising the reassortant influenza A virus of the invention.
The present invention provides a method for generating negative-stranded segmented RNA viruses using linear expression constructs in the presence of helper virus.
The present invention provides a method for producing pH-stable enveloped viruses wherein said viruses are used for infection of host cells under low pH conditions and for incubation with cell culture cells under conditions of low pH, as well as influenza viruses obtainable by this method which exhibit a high growth rate in cell culture, increased pH and temperature stability and which have human receptor specificity.
The present invention provides an influenza B virus M gene with a modification of at least one nucleotide proximate to the N-terminus of the M gene, more specifically at any one of nucleotide positions 265 to 294 of the M gene. The present invention also provides an influenza B virus comprising the modified M gene, the use of the modified M gene for the preparation of a vaccine and methods for preparing the modified influenza virus.
A61K 39/145 - Orthomyxoviridae, e.g. influenza virus
C07H 21/00 - Compounds containing two or more mononucleotide units having separate phosphate or polyphosphate groups linked by saccharide radicals of nucleoside groups, e.g. nucleic acids
C12N 7/04 - Inactivation or attenuationProducing viral sub-units
A61P 31/16 - Antivirals for RNA viruses for influenza or rhinoviruses
The present invention relates, in general, to materials and methods for production of an improved vaccine against influenza virus, wherein the vaccine comprises a reassortant virus having a hemagglutinin gene and a neuraminidase gene from the same influenza A virus subtype or influenza B strain of virus and internal genes from a different influenza A virus subtype or influenza B strain of virus. In one aspect, the HA and NA genes and the internal genes are from a highly pathogenic H5N1 strain of influenza A.
The present invention provides a method for generating negative-strand, segmented RNA viruses using linear expression constructs in the presence of helper virus.
C12N 7/00 - Viruses, e.g. bacteriophagesCompositions thereofPreparation or purification thereof
C07K 7/06 - Linear peptides containing only normal peptide links having 5 to 11 amino acids
C07H 21/00 - Compounds containing two or more mononucleotide units having separate phosphate or polyphosphate groups linked by saccharide radicals of nucleoside groups, e.g. nucleic acids
21.
Method for production of pH stable enveloped viruses
The present invention provides a method for producing pH-stable enveloped viruses wherein said viruses are used for infection of host cells under low pH conditions and for incubation with cell culture cells under conditions of low pH, as well as influenza viruses obtainable by this method which exhibit a high growth rate in cell culture, increased pH and temperature stability and which have human receptor specificity.
A liquid or liquid-frozen composition comprising: a modified vaccinia Ankara (MVA) virus or variant or derivative thereof and mannitol, wherein mannitol is the sole stabilization agent of the composition. The mannitol may provide a stabilizing effect at 0 to +10° C. or in a liquid-frozen composition, for example between −10° C. and −30° C. or between −20° C. and −23.5° C. The MVA may be used as a vaccine or for use in gene therapy, virotherapy, immunotherapy, or cancer therapy in a mammal, preferably a human.
The use of macrolide polyene antibiotics or derivatives or analogues thereof as culture supplement for the propagation of virus is described. Further pharmaceutical compositions comprising a virus and a macrolide polyene antibiotic or a derivative or analogue thereof and methods for using of macrolide polyene antibiotics for transfection and infection of cells as well as the use of macrolide polyene antibiotics for the isolation of virus from clinical samples are disclosed.
A61K 39/145 - Orthomyxoviridae, e.g. influenza virus
A01N 63/00 - Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
The present invention relates to a method for production of continuous cell lines comprising providing living cells of an animal or a human, irradiating said cells with UV light, proliferating said cells and selecting multiplying cells as cells of a continuous cell line.
The present invention provides a method for the production of a virus. The method includes providing a host cell that has been infected by the virus and cultivating the infected host cell at two different temperatures. The virus produced by the cultivation steps is subsequently collected. By using the dual temperature cultivation process, high titer and improved purity can be obtained.
C12Q 1/70 - Measuring or testing processes involving enzymes, nucleic acids or microorganismsCompositions thereforProcesses of preparing such compositions involving virus or bacteriophage
The present invention relates to a method for inactivating virus in a sample by treating a virus containing sample with an effective concentration of formalin and by treating the sample with an effective dose of UV light in a flow-through apparatus.
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