摘要:
Production of human procollagen or collagen in cells which ordinarily do not produce these molecules is effected by constructing expression systems compatible with mammary glands of non-human mamals. For example, expression systems can be microinjected into fertilized oocytes and reimplanted in foster mothers and carried to term in order to obtain transgenic non-human mammals capable of producing milk containing recombinant human procollagen or collagen. Human procollagen or collagen produced in this manner can be made of a single collagen type uncontaminated by other human or non-human collagens.
摘要:
The invention provides transgenic nonhuman mammals expressing C1 inhibitor in their milk. The C1 inhibitor is useful in treating patients with hereditary angioedema or patients requiring immunosuppression.
摘要:
The present invention provides a method of genotyping bovine for improved milk production traits by determining the DGAT1 genotypic state of said bovine, wherein the DGAT1 gene and polymorphisms within said gene have been found to be associated with such improved milk production traits.
摘要:
The invention provides the use of an enhancer sequence in effecting targeted mammary gland expression in a transgenic non-human mammal of a coding sequence derived from a gene coding for a biologically active agent, said enhancer sequence being employed, together with said coding sequence, in the form of a recombinant DNA gene complex incorporated into the germ line of said mammal.
摘要:
The invention provides recombinant procollagen chains having a natural collagen chain separated from one or two propeptides by one or two non-natural site-specific proteolytic agent ( e . g ., protease) recognition sites. A wide variety of propeptides and site-specific proteolytic agent recognition sites may be used: the selection of particular site-specific proteolytic agent/recognition site pairs is based on the conformation of the resulting procollagen, the availability of the site-specific proteolytic agent, the compatibility of the proteolysis with production of mature collagen, among other factors. Recombinant collagens chains are produced by contacting the subject recombinant procollagen chains with the appropriate site-specific proteolytic agents. Nucleic acids encoding the subject procollagen chains operably linked to transcription regulatory elements are used in vectors and cells for the production of recombinant collagen. Such collagen is used in tissue and cell cultureware and therapeutically, such as in biodegradable surgical materials and for tissue augmentation.
摘要:
The present invention provides a method of genotyping bovine for improved milk production traits by determining the DGAT1 genotypic state of said bovine, wherein the DGAT1 gene and polymorphisms within said gene have been found to be associated with such improved milk production traits.
摘要:
The invention provides transgenic nonhuman mammals producing phosphorylated lysosomal proteins in their milk, and methods of generating the same. Phosphorylation occurs at the 6' position of a mannose side chain residue. Also provided are methods of purifying lysosomal proteins from milk, and incorporating the proteins into pharmaceutical compositions for use in enzyme replacement therapy.
摘要:
The invention provides transgenic nonhuman mammals producing phosphorylated lysosomal proteins in their milk, and methods of generating the same. Phosphorylation occurs at the 6' position of a mannose side chain residue. Also provided are methods of purifying lysosomal proteins from milk, and incorporating the proteins into pharmaceutical compositions for use in enzyme replacement therapy.
摘要:
Production of human procollagen or collagen in cells which ordinarily do not produce these molecules is effected by constructing expression systems compatible with mammary glands of non-human mamals. For example, expression systems can be microinjected into fertilized oocytes and reimplanted in foster mothers and carried to term in order to obtain transgenic non-human mammals capable of producing milk containing recombinant human procollagen or collagen. Human procollagen or collagen produced in this manner can be made of a single collagen type uncontaminated by other human or non-human collagens.
摘要:
Production of human procollagen or collagen in cells which ordinarily do not produce these molecules is effected by constructing expression systems compatible with mammary glands of non-human mamals. For example, expression systems can be microinjected into fertilized oocytes and reimplanted in foster mothers and carried to term in order to obtain transgenic non-human mammals capable of producing milk containing recombinant human procollagen or collagen. Human procollagen or collagen produced in this manner can be made of a single collagen type uncontaminated by other human or non-human collagens.