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    • 109. 发明授权
    • Method for selectively inhibiting the growth of microbes using a
haloperoxidase-halide-peroxide system
    • 使用卤代过氧化物酶 - 卤化物 - 过氧化物体系选择性抑制微生物生长的方法
    • US5888505A
    • 1999-03-30
    • US480357
    • 1995-06-07
    • Robert Charles Allen
    • Robert Charles Allen
    • A01N63/00A61K38/44A61L12/08A61L12/12A61L15/38A61L15/46A61P31/00C07G17/00C12N9/08
    • A61L15/46A01N63/00A61K33/00A61K33/20A61K33/40A61K38/44A61L12/082A61L12/126A61L15/38C12Y111/01007C12Y111/02002
    • Haloperoxidases are used to selectively bind to and, in the presence of peroxide and halide, inhibit the growth of target microbes without eliminating desirable microbes or significantly damaging other components, such as host cells, in the environment of the target microbe. When a target microbe, e.g., a pathogenic microbe, has a binding capacity for haloperoxidase greater than that of a desired microbe, e.g., members of the normal flora, the target microbe selectively binds the haloperoxidase with little or no binding of the haloperoxidase by the desired microbe. In the presence of peroxide and halide, the target bound haloperoxidase catalyzes halide oxidation and facilitates the disproportionation of peroxide to singlet molecular oxygen at the surface of the target microbe. The lifetime of singlet molecular oxygen restricts damage to the surface resulting in selective killing of the target microbe with a minimum of collateral damage to the desired microbe or physiological medium. The methods and compositions of the invention are highly useful in the therapeutic or prophylactic antiseptic treatment of human or animal subjects, since their use can be designed to be highly effective in combatting bacterial or fungal infections without significant damage to normal flora or host cells. Suitable haloperoxidases include myeloperoxidase (MPO), eosinophil peroxidase (EPO), lactoperoxidase (LPO), chloroperoxidase (CPO) and derivatives thereof capable of selective binding to target microbes.
    • 卤过氧化物酶用于选择性结合并且在过氧化物和卤化物的存在下,抑制靶微生物的生长,而不消除所需的微生物或显着损害目标微生物环境中的其它成分,例如宿主细胞。 当目标微生物例如致病微生物具有比所需微生物(例如正常菌​​群成员)更大的卤代过氧化物酶的结合能力时,目标微生物选择性地结合卤代过氧化物酶,其中卤代过氧化物酶与 所需的微生物。 在过氧化物和卤化物的存在下,目标结合的卤代过氧化物酶催化卤化物氧化,促进过氧化物在目标微生物表面的单分子氧的歧化。 单线态分子氧的寿命限制了对表面的损伤,导致对目标微生物的选择性杀伤,对所需的微生物或生理介质具有最小的附带损伤。 本发明的方法和组合物在人或动物受试者的治疗或预防性消毒治疗中是非常有用的,因为它们的使用可被设计为在对正常菌群或宿主细胞没有显着损伤的情况下对抗细菌或真菌感染是非常有效的。 合适的过氧化氢酶包括能够选择性结合靶微生物的髓过氧化物酶(MPO),嗜酸性粒细胞过氧化物酶(EPO),乳过氧化物酶(LPO),氯过氧化物酶(CPO)及其衍生物。