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    • 47. 发明授权
    • Hemoglobins with intersubunit desulfide bonds
    • 血红蛋白与亚基间脱硫键
    • US5449759A
    • 1995-09-12
    • US158483
    • 1993-11-29
    • Stephen J. HoffmanKiyoshi Nagai
    • Stephen J. HoffmanKiyoshi Nagai
    • A61K38/00C07K14/805A61K38/42
    • C07K14/805A61K38/00C07K2319/00Y10S514/832Y10S514/833
    • Cysteine substitution mutants of alpha and/or beta globin mutants are produced by recombinant DNA techniques and used in the construction, intracellularly or otherwise, of mutant hemoglobins in which alpha- and beta-globin like subunits are crosslinked by disulfide bonds. Solutions of these mutant hemoglobins are used as blood substitutes.Preferably, these mutant hemoglobins contain further mutations which reduce their affinity for oxygen.Hemoglobins are preferably obtained by recombinant DNA techniques. Both alpha and beta globin chains can now be readily expressed, making possible the commercial production of wholly artificial hemoglobin, whether conventional or mutant in form. Solutions of wholly artificial hemoglobins are also used as blood substitutes. Expression of the alpha globin gene was substantially improved by means of a beta globin gene "header".
    • α和/或β球蛋白突变体的半胱氨酸取代突变体通过重组DNA技术产生并用于构建,细胞内或其它突变体血红蛋白,其中α和β-珠蛋白样亚基通过二硫键交联。 这些突变体血红蛋白的溶液用作血液代用品。 优选地,这些突变体血红蛋白含有进一步降低其对氧的亲和力的突变。 血红蛋白优选通过重组DNA技术获得。 现在可以容易地表达α和β球蛋白链,使得完全人造血红蛋白的商业生产成为可能,无论是常规的还是突变形式。 完全人造血红蛋白的溶液也用作血液代用品。 通过β球蛋白基因“头”,α球蛋白基因的表达显着改善。