摘要:
This invention provides transgenic mammals other than man carrying the gene of the human complement inhibitor (DAF/CD55) and expressing the human complement inhibitor in their organs and tissues, particularly in their endothelial cells. This invention provides nonhuman transgenic mammals useful as laboratory animals in the medical and pharmacological fields and/or sources of organs, tissues, cells and the like for medical treatment of man.
摘要:
The invention relates to mammalian cell lines and transgenic mammals. More particularly, it relates to a method for producing a rat cell line, a method for producing a transgenic rat, a transgenic rat, a rat cell line, cells and tissue obtained therefrom and uses therefore. The cell line derived from a transgenic mammal comprises: (i) a conditional oncogene, transforming gene or immortalising gene or a cell cycle affecting gene; and (ii) a cell type specific promoter. They include a neuronal cell line in which the cell type specific promoter is an NF-L gene promoter, and a mammary cell line in which the cell type specific promoter is a MMTV gene promoter. The conditional oncogene, transforming gene or immortalising gene is preferably a SV40tsA58 gene.
摘要:
A mammal is provided, in which the LKB1 gene can be deleted phase-specifically and tissue-specifically. These mammals are highly useful as tools to reveal the onset mechanism for diseases caused by LKB1 gene deficiency, such as Peutz-Jeghers syndrome and cancers, as well as to develop therapeutic agents, methods, and so on for the diseases.
摘要:
A transgenic animal, preferably a mouse, that expresses human antichymotrypsin (ACT) in brain tissues is provided, together with animal tissue-derived cell lines and progeny animals of said transgenic animal. Progeny are obtained by mating the transgeny animal with select animal strains used as models of Alzheimer's disease, related neurological disorders, or amyloidogenic diseases. Methods utilizing the parent and progeny animals and cells derived therefrom are disclosed for testing compounds for use as anti-inflammatory drugs, inhibitors of amyloidogenesis, and/or inhibitors of tau protein pathology associated with Alzheimer's disease, in the treatment of a variety of neurological diseases.
摘要:
The present invention relates to transgenic animals, as well as compositions and methods relating to the characterization of gene function. Specifically, the present invention provides transgenic mice comprising disruptions in genes, which are useful as models for disease and for identifying agents that modulate gene expression and gene function, and as potential treatments for various disease states and disease conditions.
摘要:
A knockout mouse in which the Fgl-2 gene has been suppressed is described. The mouse is useful in studying the role of Fgl-2 in normal and disease states including viral hepatitis, allograph rejection, fetal loss, inflammatory bowel disease, lupus glomerulonephritis; acute respiratory disease syndrome, Whipple's disease, cancer and for developing therapies to treat these diseases.
摘要:
Transgenic non-human animals are described comprising a transgene for a species-specific pathogen and transgene(s) for at least one receptor restricting infection of the pathogen to the host species. Also described is a method for creating the transgenic non-human animal of this invention and a method for screening an agent for the ability to inhibit infection by a species-specific virus using said transgenic non-human animal. The transgenic animal of this invention has a sustained productive viral infection and does not develop a virus-specific immune response, thereby resulting in an extremely useful self-contained system to investigate the factors modulating in vivo replication of human pathogens, the pathophysiological effect of pathogen replication and production, and the effectiveness of novel therapies and vaccines modifying or inhibiting the course of pathogenesis.
摘要:
A mouse is provided which is selectively deficient in natural killer cells. Also provided are methods for producing the mouse. Additionally, mice which are deficient in natural killer cells and B cells, natural killer cells and T cells, and natural killer cells, T cells, and B cells are provided, along with methods for making these mice. Methods of using these mice to: produce an animal containing human tissue, evaluate the effects of a composition on human tissue, determine whether a human disease is caused by a pathogenic agent, and study natural killer cells are also provided.
摘要:
A transgenic animal containing germ cells and somatic cells which contain a non-native recombinant gene which codes upon expression hexokinase capable of expressing hexokinase at significantly increased levels for study of the role of hexokinase in diabetes and other diseases. When these transgenic animals were exposed to a calmodulin stimulated model of diabetes increased levels of hexokinase activity were able to promote insulin secretion thereby reducing glucose levels in blood and transiently reduce the effects of diabetes.
摘要:
Recombinant Factor IX characterized by a high percentage of active protein can be obtained in the milk of transgenic animals that incorporate chimeric DNA molecules according to the present invention. Transgenic animals of the present invention are produced by introducing into developing embryos DNA that encodes Factor IX, such that the foreign DNA is stably incorporated in the DNA of germ line cells of the mature animal. Particularly efficient expression was accomplished using a chimeric construct comprising a mammary gland specific promoter, Factor IX cDNA that lacked the complete or any portion of the 5′-untranslated and 3′-untranslated region, which is substituted with a 5′- and 3′-end of the mouse whey acidic protein gene. In vitro cell cultures of cells explanted from the transgenic mammal of the invention and methods of producing Factor IX from such said culture and methods of treating hemophilia B are also described.