Abstract: Compositions for reducing fucosylation of glycoproteins in insect cells are provided. Also disclosed are methods of use of such compositions for the production of recombinant humanized proteins.

Abstract: The current teachings relate to DNA vectors for genomic editing in insect cells, for example glycoengineering in cell lines obtained from lepidopteran insects, and methods and kits for use of such vectors to modify genome editing function in insect cells. The disclosed vectors and methods comprise novel constructs that enable the CRISPR-Cas9 system in cultured insect cells. Also disclosed are lepidopteran cells that are transformed using the disclosed vectors and methods.

Abstract: Compositions for reducing fucosylation of glycoproteins in insect cells are provided. Also disclosed are methods of use of such compositions for the production of recombinant humanized proteins.

Abstract: Transgenic silkworms comprising at least one nucleic acid encoding a chimeric silk polypeptide comprising one or more spider silk elasticity and strength motifs are disclosed. Expression cassettes comprising nucleic acids encoding a variety of chimeric spider silk polypeptides (Spider 2, Spider 4, Spider 6, Spider 8) are also disclosed. A piggyBac vector system is used to incorporate nucleic acids encoding chimeric spider silk polypeptides into the mutant silkworms to generate stable transgenic silkworms. Chimeric silk fibers having improved tensile strength and elasticity characteristics compared to native silkworm silk fibers are also provided. The transgenic silkworms greatly facilitate the commercial production of chimeric silk fibers suitable for use in a wide variety of medical and industrial applications.

Abstract: Transgenic silkworms comprising at least one nucleic acid encoding a chimeric silk polypeptide comprising one or more spider silk elasticity and strength motifs are disclosed. Expression cassettes comprising nucleic acids encoding a variety of chimeric spider silk polypeptides (Spider 2, Spider 4, Spider 6, Spider 8) are also disclosed. A piggyBac vector system is used to incorporate nucleic acids encoding chimeric spider silk polypeptides into the mutant silkworms to generate stable transgenic silkworms. Chimeric silk fibers having improved tensile strength and elasticity characteristics compared to native silkworm silk fibers are also provided. The transgenic silkworms greatly facilitate the commercial production of chimeric silk fibers suitable for use in a wide variety of medical and industrial applications.

Abstract: Transgenic silkworms comprising at least one nucleic acid encoding a chimeric silk polypeptide comprising one or more spider silk elasticity and strength motifs are disclosed. Expression cassettes comprising nucleic acids encoding a variety of chimeric spider silk polypeptides (Spider 2, Spider 4, Spider 6, Spider 8) are also disclosed. A piggyBac vector system is used to incorporate nucleic acids encoding chimeric spider silk polypeptides into the mutant silkworms to generate stable transgenic silkworms. Chimeric silk fibers having improved tensile strength and elasticity characteristics compared to native silkworm silk fibers are also provided. The transgenic silkworms greatly facilitate the commercial production of chimeric silk fibers suitable for use in a wide variety of medical and industrial applications.

Abstract: A transgenic silkworm system for recombinant glycoprotein production is provided.

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 recombinant glycoproteins possessing sulfated, complex N-glycans is provided.

Abstract: Compositions for reducing fucosylation of glycoproteins in insect cells are provided. Also disclosed are methods of use of such compositions for the production of recombinant humanized proteins.

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 invention includes a nucleic acid having a sequence at least 98% homologous to SEQ ID NO: 1, which encodes the ? subunit of canine thyroid stimulating hormone (TSH). The invention also includes a nucleic acid having a sequence at least 98% homologous to SEQ ID NO: 2, which encodes the ? subunit of canine TSH. The invention also includes a method of producing a recombinant canine thyroid stimulating hormone (rcTSH) subunit by expressing a nucleic acid having a sequence of SEQ ID NO: 1 and a nucleic acid having a sequence of SEQ ID NO: 2 in a transgenic insect cell modified to sialylate proteins and producing a sialylated rcTSH subunit. The insect cell may be a lepidopteran cell. The rcTSH may be used for diagnosis and treatment. It may be used to diagnose canine hypothyroidism.

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 invention includes a nucleic acid having a sequence at least 98% homologous to SEQ ID NO: 1, which encodes the ? subunit of canine thyroid stimulating hormone (TSH). The invention also includes a nucleic acid having a sequence at least 98% homologous to SEQ ID NO: 2, which encodes the ? subunit of canine TSH. The invention also includes a method of producing a recombinant canine thyroid stimulating hormone (rcTSH) subunit by expressing a nucleic acid having a sequence of SEQ ID NO: 1 and a nucleic acid having a sequence of SEQ ID NO: 2 in a transgenic insect cell modified to sialylate proteins and producing a sialylated rcTSH subunit. The insect cell may be a lepidopteran cell. The rcTSH may be used for diagnosis and treatment. It may be used to diagnose canine hypothyroidism.

Abstract: A transgenic silkworm system for recombinant glycoprotein production is provided.

Abstract: A transgenic insect cell line for production of recombinant glycoproteins possessing sulfated, complex N-glycans is provided.

Abstract: The invention includes a nucleic acid having a sequence at least 98% homologous to SEQ ID NO: 1, which encodes the ? subunit of canine thyroid stimulating hormone (TSH). The invention also includes a nucleic acid having a sequence at least 98% homologous to SEQ ID NO: 2, which encodes the ? subunit of canine TSH. The invention also includes a method of producing an recombinant canine thyroid stimulating hormone (rcTSH) subunit by expressing a nucleic acid having a sequence of SEQ ID NO: 1 and a nucleic acid having a sequence of SEQ ID NO: 2 in a transgenic insect cell modified to sialylate proteins and producing a sialylated rcTSH subunit. The insect cell may be a lepidopteran cell. The rcTSH may be used for diagnosis and treatment. It may be used to diagnose canine hypothyroidism.

Abstract: Disclosed are a variety of recombinant baculovirus vectors, and host insect cells, which comprise at least one oligosaccharide processing enzyme gene. The vectors and cells may optionally comprise other heterologous structural genes, including further protein processing enzymes. Methods of making and using the recombinant baculoviruses and vectors are provided, including their uses in recombiant protein production and as insecticides.

Abstract: The present invention provides an method for isolating and purifying recombinantly produced proteins. This invention involves the use of an expression vector which includes a nuclear targeting signal sequence which effectively directs newly synthesized proteins to the nucleus; a cleavage recognition sequence which cleaves specifically at a pre-determined cleavage site after addition of a viral enzyme; and a cDNA sequence which codes for a desired protein. Specifically the production and isolation of a desired protein is accomplished through the use of lepidopteran cells transfected or infected with recombinant baculovirus expression vector comprising a polyhedrin gene derived nuclear targeting signal sequence and a cleavage recognition sequence derived from a potyvirus polyprotein. The newly synthesized proteins are directed into the nucleus whereupon nuclear protein is extracted from the nucleus.

Abstract: This invention details a novel and unique plasmid vector for the dual purposes of either producing transformed insect cell clones or recombinant baculoviruses. The transformed insect cell clones will continuously and permanently produce an efficiently processed desired foreign gene product. The recombinant baculoviruses will transiently express the desired foreign gene during immediate early phase of infection. This unique vector employs promoters from two different immediate early baculovirus genes along with the natural occurring polyhedrin promoter and gene. This unique combination creates a situation where the virus is highly infectious in vivo and resistant to inactivation in nature, because it is occlusion positive, and expresses the foreign gene product during immediate early phase of infection. Therefore this virus would be very effective as a delivery system of pesticides.