Abstract: The present invention features methods of producing immunogenic compositions and viruses, methods of treating and preventing viral infection, and methods of producing an immune response using cells that express a polypeptide selected from the group consisting of: cdk13, siat7e, Iama4, cox15, egr1, gas6, map3k9, and gap43, and a virus.

Abstract: The invention generally provides compositions and methods for modulating cell properties and enhancing recombinant protein yields. In particular, the compositions and methods provide for cells having altered growth characteristics, including altered adhesion, rate of proliferation, growth to particular cell density, and recombinant protein expression level.

Abstract: The present invention relates to preventing or delaying programmed cell death by expressing one or more anti-apoptotic polypeptides in a cell expressing recombinant Factor VIII such that programmed cell death in the cell is prevented or delayed. The present invention also relates to increasing production of recombinant Factor VIII by expressing one or more anti-apoptotic polypeptides in a cell such that production of recombinant Factor VIII by the cell is increased. Recombinant cells useful for producing Factor VIII.

Abstract: The level of glycosylation on products produced by a host (such as CHO cells, HEK cells and other mammalian cells, and non-mammalian cells) or patient can be increased by engineering, such as by supplying the host or patient with a gene sequence. For example, the host or patient can be made to produce desirably glycosylated products by increasing one or both of expression of N-glycan substrate containing lipid-liked oligosaccharide and expression of oligosaccharide (OST) transferase.

Abstract: Methods for manipulating carbohydrate processing pathways in cells of interest are provided. Methods are directed at manipulating multiple pathways involved with the sialylation reaction by using recombinant DNA technology and substrate feeding approaches to enable the production of sialylated glycoproteins in cells of interest. These carbohydrate engineering efforts encompass the implementation of new carbohydrate bioassays, the examination of a selection of insect cell lines and the use of bioinformatics to identify gene sequences for critical processing enzymes. The compositions comprise cells of interest producing sialylated glycoproteins. The methods and compositions are useful for heterologous expression of glycoproteins.

Abstract: The present invention relates to novel human glycosylation enzyme polypeptides and isolated nucleic acids containing the coding regions of the genes encoding such polypeptides. Also provided are vectors, host cells, antibodies, and recombinant methods for producing human glycosylation enzyme polypeptides. The invention further relates to diagnostic and therapeutic methods useful for diagnosing and treating disorders related to these novel human glycosylation enzyme polypeptides.