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    • 5. 发明授权
    • Surface loop structural analogues of fibroblast growth factors
    • 成纤维细胞生长因子的表面环结构类似物
    • US5491220A
    • 1996-02-13
    • US290373
    • 1994-08-15
    • Andrew P. SeddonLuyuan LiPeter BohlenMagdalena EisingerAvner Yayon
    • Andrew P. SeddonLuyuan LiPeter BohlenMagdalena EisingerAvner Yayon
    • A61K38/00C07K14/50C07K14/545C12N15/18
    • C07K14/501C07K14/50C07K14/503C07K14/545A61K38/00
    • Structural analogues of fibroblast growth factors have an amino acid sequence replacement in the ninth or tenth .beta.-strand of the factor, or the sequence that corresponds to the surface loop that connects the ninth and tenth .beta.-strands, such that the folding of the molecule is not significantly perturbed. Preferred analogues have the amino acid sequence replacement in the surface loop that extends from the ninth .beta.-strand to the tenth .beta.-strand and have the overall secondary and tertiary structure of the original factor, and bind to heparin and a member or members of the fibroblast growth factor receptor family with high affinity. In some embodiments, the analogues are prepared by replacing the surface loop sequence that connects the ninth and tenth .beta.-strand with another amino acid sequence such as a loop sequence from another structurally related fibroblast growth factor or an interleukin. Preferred analogues exhibit different biological properties and/or receptor binding specificity profiles from native factors.
    • 成纤维细胞生长因子的结构类似物在该因子的第9或第10个β链中具有氨基酸序列替换,或者对应于连接第9和第10个β链的表面环的序列,使得分子的折叠 没有明显的扰动。 优选的类似物在表面循环中具有从第九个β链延伸到第十个β链的氨基酸序列替代物,并具有原始因子的总体二级结构和三级结构,并且结合肝素和成员 成纤维细胞生长因子受体家族具有高亲和力。 在一些实施方案中,通过将来自另一结构相关的成纤维细胞生长因子或白介素的另一个氨基酸序列例如环序列替换连接第九和第十个β链的表面环序列来制备类似物。 优选的类似物表现出与天然因素不同的生物学特性和/或受体结合特异性谱。