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:
The present invention provides ungulates, including pigs, expressing CTLA4-Ig, as well as tissue, organs, cells and cell lines derived from such animals. Such animals, tissues, organs and cells can be used in research and medical therapy, including xenotransplanation. In addition, methods are provided to prepare organs, tissues and cells expressing the CTLA4-Ig for use in xenotransplantation, and nucleic acid constructs and vectors useful therein.
Abstract:
The present invention relates to methods of modulating traits, particularly production traits, in avians such as chickens. In particular, the invention relates to the in ovo delivery of a dsRNA molecule, especially siRNAs, to modify production traits in commercially important birds.
Abstract:
A method of inducing male and/or female infertility in a genetically modified (GM) fish is disclosed. Also disclosed is a method of generating an infertile GM fish with a phenotype and/or genotype of interest. The method involves generation of a GM fish whose genome comprises a foreign transgene operably linked to a fish gonad-specific promoter selected from the group consisting of an ovary-specific promoter and a testis-specific promoter. The transgene comprises a suicide gene selected from the group consisting of a reductase and a photosensitizer, in which the reductase is operably linked to a reporter gene. Infertility of the GM fish is induced if the GM fish expressing the reductase is treated with an effective amount of a reductase-activated cytotoxic prodrug or if the GM fish expressing the photosensitizer is treated with light irradiation.
Abstract:
Methods and/or hormone-producing cells for improving the development and/or maturation of eggs and/or sperm in fish using hormone administration. The methods may comprise providing the fish with cells producing the hormone. Preferred hormones are fertility hormones such as luteinizing hormone (LH), follicle-stimulating hormone (FSH) or chorionic gonadotropin (CG) or a functional part, derivative and/or analogue thereof.
Abstract:
The use of interferon induced transmembrane protein 1, 2, or 3 (IFITM1, 2, or 3) as a viral restriction factor, and methods of using the same to produce virus, transgenic animals expressing exogenous IFITM1, 2, or 3, and methods of treating or inhibiting viral infections by targeting a gene identified herein
Abstract:
The present invention relates to transgenic blue ornamental fish, as well as methods of making such fish by in vitro fertilization techniques. Also disclosed are methods of establishing a population of such transgenic fish and methods of providing them to the ornamental fish industry for the purpose of marketing.
Abstract:
The invention relates to a crustacean androgenic gland hormone. More specifically, described are an androgenic gland hormone and associated peptides derived from Penaeus monodon, and their use to influence the sex ratio in prawn and shrimp cultures, and to set up monosex cultures. It is also related to the use of the hormone and associated peptides, associated gene or fragments thereof in sex determination.
Abstract:
The present invention provides tissues derived from animals, which lack any expression of functional alpha 1,3 galactosyltransferase (alpha-1,3-GT). Such tissues can be used in the field of xenotransplantation, such as orthopedic reconstruction and repair, skin repair and internal tissue repair or as medical devices.
Abstract:
The present invention relates to a method for producing a transgenic pig in which immune rejection response is inhibited, and in which human HO-1 genes and TNFR1-Fe fusion genes are simultaneously expressed. The present invention also relates to a transgenic pig for organ transplantation, which is produced by the method, and in which immune rejection response is inhibited. The present invention also relates to a somatic-cell-donating cell strain for producing the transgenic pig, and to a method for producing organs, from the transgenic pig, in which the immune rejection response is inhibited.