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    • 56. 发明授权
    • Colony stimulating factor-gelatin conjugate
    • 集落刺激因子 - 明胶缀合物
    • US5298243A
    • 1994-03-29
    • US422701
    • 1989-10-17
    • Yoshito IkadaYasuhiko TabataHiroyasu Suzuki
    • Yoshito IkadaYasuhiko TabataHiroyasu Suzuki
    • A61K38/19A61K47/48C07K15/00C07K3/02
    • A61K38/193A61K47/48292
    • Disclosed are a crosslinked gelatin microspheres containing CSF and a water soluble CSF-gelatin conjugate. Both the microspheres and the water soluble conjugate provide an improved CSF stability. They have a high potentiation on the antitumor activity of macrophages in respect of the CSF amount and the time required for macrophage activation and are effective in maintaining their activated state for a long period, compared with the native CSF. The mechanism of macrophage activation by the microspheres containing CSF is mediated via phagocytosis and different from that by native CSF, which is believed to activate macrophages via cell surface receptor. The species specificity of CSF may be abrogated when the CSF is internalized into macrophages through phagocytosis.
    • 公开了含有CSF和水溶性CSF-明胶缀合物的交联明胶微球。 微球和水溶性缀合物都能提供改善的CSF稳定性。 与天然CSF相比,它们对于巨噬细胞的CSF量和巨噬细胞活化所需的时间对抗巨噬细胞的抗肿瘤活性具有高增强作用,并且与天然CSF相比长效保持其活化状态是有效的。 通过含有CSF的微球的巨噬细胞活化的机制是通过吞噬作用介导的,不同于被认为通过细胞表面受体激活巨噬细胞的天然CSF。 当CSF通过吞噬作用内化于巨噬细胞时,CSF的物种特异性可能被消除。