Abstract: The current teachings are directed to novel virus free cells lines derived from virus-contaminated staring material, such as an organism or a cell line. Methods for obtaining virus free cell lines obtained from virus-contaminated starting material are also provided. Exemplary virus free cell lines include: novel cell lines derived from a Spodoptera frugiperda cell line contaminated with Sf-rhabdovirus, wherein the novel cell lines lack Sf-rhabdovirus; and novel cell lines derived from a Trichoplusia ni cell line contaminated with an alphanodavirus, wherein the novel cell line lacks an alphanodavirus.

Abstract: The present disclosure relates to engineered microbial cells that have been engineered to include a uricase, a uric acid transporter, or both a uricase and a uric acid transporter. The engineered microbial cells of the present disclosure are useful in degrading uric acid inside the engineered microbial cell. The engineered microbial cells of the present disclosure are useful in methods of treating hyperuricemia. The engineered microbial cells of the present disclosure are also useful in methods of treating gout, and in particular chronic refractory gout.

Abstract: The current teachings are directed to virus free cells lines derived from virus-contaminated starting material, such as an organism or a cell line. Methods for obtaining virus free cell lines obtained from virus-contaminated starting material are also provided. Exemplary virus free cell lines include: cell lines derived from a Spodoptera frugiperda cell line contaminated with Sf-rhabdovirus, wherein the cell lines lack Sf-rhabdovirus; and cell lines derived from a Trichoplusia ni cell line contaminated with an alphanodavirus, wherein the cell line lacks an alphanodavirus.

Abstract: The current teachings are directed to novel virus free cells lines derived from virus-contaminated staring material, such as an organism or a cell line. Methods for obtaining virus free cell lines obtained from virus-contaminated starting material are also provided. Exemplary virus free cell lines include: novel cell lines derived from a Spodoptera frugiperda cell line contaminated with Sf-rhabdovirus, wherein the novel cell lines lack Sf-rhabdovirus; and novel cell lines derived from a Trichoplusia ni cell line contaminated with an alphanodavirus, wherein the novel cell line lacks an alphanodavirus.

Abstract: The present invention relates to methods of facilitating the expression of recombinant polypeptides from cells, extracellular fluids, extracellular fibers, or any combination thereof, obtained from transgenic insect cells and larvae comprising a bacterial GlcNAc-6-P 2?-epimerase (GNPE), which is capable of converting N-acetyl-D-glucosamine-6-phosphate (GlcNAc-6-P) to N-acetyl-D-mannosamine-6-phosphate (ManNAc-6-P). The invention relates to methods to promote efficient glycoconjugate sialylation, by providing simpler ways to produce large intracellular pools of sialic acid precursors. The invention is also directed to nucleic acids, vectors, and cells comprising nucleic acids encoding polypeptides involved in the synthesis of sialic acid precursors, and cells in combination with nucleic acids encoding glycosyltransferases, including sialyltransferases, to facilitate the production of humanized recombinant glycoproteins.

Abstract: A transgenic insect cell line for production of elevated levels of recombinant glycoproteins comprising mammalian-like N-glycans is provided. Also disclosed is a nucleic acid sequence encoding N-acetylglucosaminidase.

Abstract: A transgenic insect cell line for production of elevated levels of recombinant glycoproteins comprising mammalian-like N-glycans is provided. Also disclosed are nucleic acid sequences encoding ?-N-acetylglucosaminidases.

Abstract: The present invention relates to new methods to promote sialylation of glycoconjugates, including recombinant glycoproteins, in glycoconjugate production systems. The invention relates to methods to promote efficient glycoconjugate sialylation in recombinant expression systems, by providing simpler and more economical ways to produce large intracellular pools of sialic acid precursors. The invention is directed to nucleic acids, vectors, and cells harboring vectors comprising nucleic acids encoding enzymes involved in the synthesis of sialic acid precursors, and cells harboring these nucleic acids in combination with nucleic acids encoding glycosyltransferases, including sialyltransferases, to facilitate the production of humanized recombinant glycoproteins in bacterial, fungal, plant, and animal cell expression systems.

Abstract: The present invention relates to methods of facilitating the expression of recombinant polypeptides from cells, extracellular fluids, extracellular fibers, or any combination thereof, obtained from transgenic insect cells and larvae comprising a bacterial GlcNAc-6-P 2?-epimerase (GNPE), which is capable of converting N-acetyl-D-glucosamine-6-phosphate (GlcNAc-6-P) to N-acetyl-D-mannosamine-6-phosphate (ManNAc-6-P). The invention relates to methods to promote efficient glycoconjugate sialylation, by providing simpler ways to produce large intracellular pools of sialic acid precursors. The invention is also directed to nucleic acids, vectors, and cells comprising nucleic acids encoding polypeptides involved in the synthesis of sialic acid precursors, and cells in combination with nucleic acids encoding glycosyltransferases, including sialyltransferases, to facilitate the production of humanized recombinant glycoproteins.

Abstract: The present invention relates to new methods to promote sialylation of glycoconjugates, including recombinant glycoproteins, in glycoconjugate production systems. The invention relates to methods to promote efficient glycoconjugate sialylation in recombinant expression systems, by providing simpler and more economical ways to produce large intracellular pools of sialic acid precursors. The invention is directed to nucleic acids, vectors, and cells harboring vectors comprising nucleic acids encoding enzymes involved in the synthesis of sialic acid precursors, and cells harboring these nucleic acids in combination with nucleic acids encoding glycosyltransferases, including sialyltransferases, to facilitate the production of humanized recombinant glycoproteins in bacterial, fungal, plant, and animal cell expression systems.

Abstract: A transgenic insect cell line for production of elevated levels of recombinant glycoproteins comprising mammalian-like N-glycans is provided. Also disclosed are nucleic acid sequences encoding ?-N-acetylglucosaminidases.