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    • 5. 发明授权
    • Therapeutic methods using interleukin-3 (IL-3) human/murine hybrid
polypeptides
    • 使用白细胞介素-3(IL-3)人/鼠杂交多肽的治疗方法
    • US5543141A
    • 1996-08-06
    • US466647
    • 1995-06-06
    • Sarah R. Braford-GoldbergAlan M. EastonBarbara K. KleinJohn P. McKearnPeter O. Olins
    • Sarah R. Braford-GoldbergAlan M. EastonBarbara K. KleinJohn P. McKearnPeter O. Olins
    • A61K38/00C07K14/54C12N15/24A61K38/20
    • C07K14/5403A61K38/00
    • The present invention relates to recombinant human interleukin-3 (hIL-3) variant or mutant proteins (muteins) in which segments of the polypeptide sequence of the human IL-3 polypeptide have been replaced by segments of the murine (mouse) interleukin-3 (mIL-3) polypeptide to form human/murine chimeric hybrid polypeptides. The human/mouse IL-3 may have amino acid deletions at the N-terminus or the C-terminus or at both the N- and C- termini and in some cases may also contain additional amino acid substitutions or deletions. The human/murine IL-3 muteins retain at least one biological activity of native hIL-3 and may also exhibit an improved side effects profile such as a reduction in the stimulation of leukotriene release or histamine release. The invention also relates to pharmaceutical compositions containing the h/m IL-3 hybrids and methods for using them. Additionally, the present invention relates to recombinant expression vectors comprising nucleotide sequences encoding the IL-3 hybrid muteins, related microbial expression systems, and processes for making the IL-3 hybrids using the microbial expression systems.
    • 本发明涉及重组人白细胞介素-3(hIL-3)变体或突变蛋白(突变蛋白),其中人IL-3多肽的多肽序列的片段已被鼠(小鼠)白介素-3 (mIL-3)多肽以形成人/鼠嵌合杂合多肽。 人/小鼠IL-3可以在N末端或C末端或在N-和C-末端具有氨基酸缺失,并且在一些情况下也可能含有额外的氨基酸取代或缺失。 人/鼠IL-3突变蛋白保留天然hIL-3的至少一种生物活性,并且还可以表现出改善的副作用特征,例如减少刺激白三烯释放或组胺释放。 本发明还涉及含有h / m IL-3杂交体的药物组合物及其使用方法。 此外,本发明涉及包含编码IL-3杂交突变蛋白的核苷酸序列,相关的微生物表达系统和使用微生物表达系统制备IL-3杂交体的方法的重组表达载体。
    • 6. 发明授权
    • Interleuken-3 (IL-3) human/murine hybrid polypeptides and recombinant
production of the same
    • 白细胞介素-3(IL-3)人/鼠杂交多肽及其重组生产
    • US5501962A
    • 1996-03-26
    • US081539
    • 1993-06-21
    • Sarah R. Braford-GoldbergAlan M. EastonBarbara K. KleinJohn P. McKearnPeter O. Olins
    • Sarah R. Braford-GoldbergAlan M. EastonBarbara K. KleinJohn P. McKearnPeter O. Olins
    • A61K38/00C07K14/54C12N15/24A61K38/20C12N15/27
    • C07K14/5403A61K38/00
    • The present invention relates to recombinant human interleukin-3 (hIL-3) variant or mutant proteins (muteins) in which segments of the polypeptide sequence of the human IL-3 polypeptide have been replaced by segments of the murine (mouse) interleukin-3 (mIL-3) polypeptide to form human/murine chimeric hybrid polypeptides. The human/mouse hybrid IL-3 may have amino acid deletions at the N-terminus or the C-terminus or at both the N- and C- termini and in some cases may also contain additional amino acid substitutions or deletions. The human/murine IL-3 muteins retain at least one biological activity of native hIL-3 and may also exhibit an improved side effects profile such as a reduction in the stimulation of leukotriene release or histamine release. The invention also relates to pharmaceutical compositions containing the h/m IL-3 hybrids and methods for using them. Additionally, the present invention relates to recombinant expression vectors comprising nucleotide sequences encoding the IL-3 hybrid muteins, related microbial expression systems, and processes for making the IL-3 hybrids using the microbial expression systems.
    • 本发明涉及重组人白细胞介素-3(hIL-3)变体或突变蛋白(突变蛋白),其中人IL-3多肽的多肽序列的片段已被鼠(小鼠)白介素-3 (mIL-3)多肽以形成人/鼠嵌合杂合多肽。 人/小鼠混合IL-3可以在N-末端或C-末端或在N-和C-末端具有氨基酸缺失,并且在一些情况下也可能含有额外的氨基酸取代或缺失。 人/鼠IL-3突变蛋白保留天然hIL-3的至少一种生物活性,并且还可以表现出改善的副作用特征,例如减少刺激白三烯释放或组胺释放。 本发明还涉及含有h / m IL-3杂交体的药物组合物及其使用方法。 此外,本发明涉及包含编码IL-3杂交突变蛋白的核苷酸序列,相关的微生物表达系统和使用微生物表达系统制备IL-3杂交体的方法的重组表达载体。