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    • 1. 发明授权
    • Streptomyces sp producing tautomycetin and immunosuppressant comprising tautomycetin as active ingredient
    • 链霉菌sp产生抗菌素和免疫抑制剂,其包含作为活性成分的抗菌素
    • US06608045B2
    • 2003-08-19
    • US09308482
    • 1999-05-17
    • Hyoung Sik ChunJong Gwan KimHung Bae ChangSeung Kee MoonHyeog Jin SonChung Il HongJung Woo KimNam Hyun Lyu
    • Hyoung Sik ChunJong Gwan KimHung Bae ChangSeung Kee MoonHyeog Jin SonChung Il HongJung Woo KimNam Hyun Lyu
    • C12P1702
    • C12R1/465C12P7/22
    • The present invention relates to Streptomyces sp. producing tautomycetin which possesses an immunosuppressive or antibacterial activities, a process for preparing tautomycetin from the said microorganism, and an immunosuppressant or immunosuppressive pharmaceutical composition comprising tautomycetin as an active ingredient which suppresses interleukin-2 production, CD69 and interleukin-2 receptor(IL-2R) expression on the cell surface, and graft rejection in the organ transplantation. The present inventors isolated a soil microorganism which produces a substance possessing antibiotic and immunosuppressive activities, and identified the said microorganism and substance as a novel Streptomyces sp. and tautomycetin, respectively. Further, the present inventors developed a method of manufacturing the tautomycetin in a large scale from the culture of the said microorganism and discovered that tautomycetin suppresses mouse mixed lymphocyte reaction(MLR) and the expression of IL-2 based on a series of experiments employing cell line transfected with a recombinant gene.
    • 本发明涉及链霉菌属(Streptomyces sp。) 产生具有免疫抑制或抗菌活性的抗菌素,用于从所述微生物制备抗菌素的方法,以及包含抑制白细胞介素2产生的活性成分的免疫抑制剂或免疫抑制剂或免疫抑制药物组合物,CD69和白细胞介素-2受体(IL-2R )在细胞表面的表达,以及器官移植中的移植排斥反应。 本发明人分离出产生具有抗生素和免疫抑制活性的物质的土壤微生物,并将所述微生物和物质鉴定为新型链霉菌属(Streptomyces sp。)。 和tautomycetin。 此外,本发明人开发了从所述微生物的培养物大规模制造肠胃菌素的方法,并且发现根据使用细胞的一系列实验,互连霉素抑制小鼠混合淋巴细胞反应(MLR)和IL-2的表达 用重组基因转染。