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    • 7. 发明授权
    • DNA encoding human &kgr; casein and process for obtaining the protein
    • 编码人类kappa酪蛋白的DNA和获得蛋白质的方法
    • US06232094B1
    • 2001-05-15
    • US08462437
    • 1995-06-05
    • Lennart HanssonMats StrömqvistSven BergströmOlle HernellJan Törnell
    • Lennart HanssonMats StrömqvistSven BergströmOlle HernellJan Törnell
    • C12N2106
    • C12N15/8509A01K67/0278A01K2207/15A01K2217/00A01K2227/10A01K2227/101A01K2227/105A01K2267/01A23C9/20C07K14/4732C12N15/85C12N2830/002C12N2830/85C12N2840/44
    • The present invention relates to an expression system comprising a DNA sequence encoding a polypeptide which has a biological activity of human &kgr;-casein, the system comprising a 5′-flanking sequence capable of mediating expression of said DNA sequence. In preferred embodiments the 5′-flanking sequence is from a milk protein gene of a mammal such as a casein gene or whey acidic protein (WAP) gene and the DNA sequence contains at least one intron sequence selected from the intron sequences presented in SEQ ID NO:30. The invention also relates to DNA sequences, replicable expression vectors and cells harboring said vectors, recombinant polypeptide e.g. in glycosylated form, and milk, infant formula or nutrient supplement comprising recombinant polypeptide. The invention further relates to a transgenic non-human mammal such as a mouse, rat, rabbit, goat, sheep, pig, lama, camel or bovine species whose germ cells and somatic cells contain a DNA sequence as defined above as a result of chromosomal incorporation into the non-human mammalian genome, or into the genome of an ancestor of said non-human mammal.
    • 本发明涉及包含编码具有人κ-酪蛋白生物活性的多肽的DNA序列的表达系统,所述系统包含能够介导所述DNA序列表达的5'-侧翼序列。 在优选的实施方案中,5'-侧翼序列来自哺乳动物的乳蛋白基因,例如酪蛋白基因或乳清酸性蛋白(WAP)基因,并且DNA序列含有至少一个选自SEQ ID NO: 本发明还涉及DNA序列,可复制表达载体和携带所述载体的细胞,例如重组多肽 包含重组多肽的牛奶,婴儿配方食品或营养补充剂。本发明还涉及一种转基因非人哺乳动物如小鼠,大鼠,兔,山羊,绵羊,猪,喇嘛,骆驼或牛种,其胚芽 细胞和体细胞含有如上所定义的DNA序列,作为染色体掺入非人哺乳动物基因组或所述非人哺乳动物祖先的基因组的结果。
    • 10. 发明授权
    • Transgenic non-human mammal expressing the DNA sequence encoding kappa casein mammary gland and milk
    • 表达编码k酪蛋白乳腺和牛奶的DNA序列的转基因非人哺乳动物
    • US06222094B1
    • 2001-04-24
    • US08256799
    • 1994-12-06
    • Lennart HanssonMats StrömqvistSven BergströmOlle HernellJan Törnell
    • Lennart HanssonMats StrömqvistSven BergströmOlle HernellJan Törnell
    • A01K67027
    • C12N15/8509A01K67/0278A01K2207/15A01K2217/00A01K2227/10A01K2227/101A01K2227/105A01K2267/01A23C9/20C07K14/4732C12N15/85C12N2830/002C12N2830/85C12N2840/44
    • The present invention relates to an expression system comprising a DNA sequence encoding a polypeptide which ha a biological activity of human &kgr;-casein, the system comprising a 5′-flanking sequence capable of mediating expression of said DNA sequence. In preferred embodiments the 5′-flanking sequence is from a milk protein gene of a mammal such as a casein gene or whey acidic protein (WAP) gene and the DNA sequence contains at least one intron sequence. The invention further relates to DNA sequences, replicable expression vectors and cells harboring said vectors, recombinant polypeptide e.g. in glycosylated form, and milk, infant formula or nutrient supplement comprising recombinant polypeptide. The invention also relates to a method for producing a transgenic non-human mammal comprising injecting an expression system as defined above and optionally a further DNA encoding &bgr;-casein or an analog, variant or subsequence thereof into a fertilized egg or a cell of an embryo of a mammal so as to incorporate the expression system into the germline of the mammal and developing the resulting injected fertilized egg or embryo into an adult female mammal. In one embodiment, the endogenous polypeptide expressing capability of the mammal is destroyed and/or replaced with the expression system defined above. The invention further relates to a transgenic non-human mammal such as a mouse, rat, rabbit, goat, sheep, pig, lama, camel or bovine species whose germ cells a somatic cells contain a DNA sequence as defined above as a result of chromosomal incorporation into the non-human mammalian genome, or into the genome of an ancestor of said non-human mammal.
    • 本发明涉及包含编码具有人κ-酪蛋白的生物活性的多肽的DNA序列的表达系统,该系统包含能够介导所述DNA序列表达的5'-侧翼序列。 在优选的实施方案中,5'-侧翼序列来自哺乳动物的乳蛋白基因,例如酪蛋白基因或乳清酸性蛋白(WAP)基因,并且DNA序列含有至少一个内含子序列。 本发明还涉及DNA序列,可复制表达载体和携带所述载体的细胞,重组多肽例如 糖基化形式,以及包含重组多肽的乳,婴儿配方食品或营养补充剂。 本发明还涉及一种用于产生转基因非人哺乳动物的方法,包括将如上定义的表达系统和任选的编码β-酪蛋白或其类似物,变体或亚序列的另外的DNA注射入受精卵或胚胎细胞 以将表达系统并入哺乳动物的种系,并将所得的注射的受精卵或胚胎发育成成年雌性哺乳动物。 在一个实施方案中,表达哺乳动物的内源多肽被破坏和/或用上述定义的表达系统代替。 本发明还涉及一种转基因非人哺乳动物,例如小鼠,大鼠,兔,山羊,绵羊,猪,羔羊,骆驼或牛,其生殖细胞体细胞含有如上文所定义的DNA序列作为染色体 掺入非人哺乳动物基因组中,或并入所述非人哺乳动物的祖先的基因组中。