申请人:State of Israel
Represented by the Prime Minister's Office
The Israel Institute for Biological Research
公开号:EP0651055A2
公开(公告)日:1995-05-03
Detoxification of humans who have been exposed to phosphylating agents, and decontamination of a locus containing phosphylating agents (e.g. organophosphorus insecticides or organophosphorus nerve gases), are effected by administration to the humans or applying to the locus, respectively, at least one recombinant cholinesterase mutant so as to form phosphylated cholinesterase mutant, in presence of intrinsic or extrinsic reactivator activity effective to reactivate the mutant by breaking the phosphyl/cholinesterase mutant covalent bond, the phosphylated mutant being more readily reconverted to nonphosphylated mutant, than the corresponding phosphylated non-mutated cholinesterase is reconverted to non-phosphylated non-mutated cholinesterase. Mutation sites in the amino acid sequence of HuAChE, or in equivalent positions in other cholinesterases, are preferably selected from at least one of (a) Ser23, Glu334, His447; (b) Gly122, Tyr133, Glu22, Ser229, Gly448, Glu45; (c) Leu76, Tyr77, Trp86, Tyr117, Tyr119, Gly12, Gly121, Trp236, Phe295, Phe297, Tyr337, Phe338, Trp439, Tyr449; and/or (d) Tyr72, Asp74, Tyr124, Glu285, Trp286, Tyr341. The invention includes use of the (non-phosphylated) mutants for the manufacture of medicaments for detoxification, pharmaceutical formulations for detoxification, compositions for decontamination, and phosphylated and non-phosphylated recombinant cholinesterase mutants, per se.
对接触过磷化剂的人进行解毒,以及对含有磷化剂(如有机磷杀虫剂或有机磷神经毒气)的场所进行净化,可分别通过对人施用或对场所施用至少一种重组胆碱酯酶突变体来实现。向人体施用至少一种重组胆碱酯酶突变体或向基因座施用至少一种重组胆碱酯酶突变体以形成磷酸化胆碱酯酶突变体,可分别达到解毒和净化含有磷酸化制剂(如有机磷杀虫剂或有机磷神经毒气)的基因座的目的、在存在有效的内在或外在再活化剂活性的情况下,通过破坏磷酸化/胆碱酯酶突变体共价键使突变体再活化,磷酸化突变体比相应的磷酸化非突变胆碱酯酶更容易再转化为非磷酸化非突变胆碱酯酶。HuAChE 氨基酸序列中的突变位点或其他胆碱酯酶中同等位置的突变位点最好选自以下至少一种 (a) Ser23、Glu334、His447;(b) Gly122、Tyr133、Glu22、Ser229、Gly448、Glu45; (c) Leu76、Tyr77、Trp86、Tyr117、Tyr119、Gly12、Gly121、Trp236、Phe295、Phe297、Tyr337、Phe338、Trp439、Tyr449;和/或 (d) Tyr72、Asp74、Tyr124、Glu285、Trp286、Tyr341。本发明包括使用(非磷酸化)突变体制造解毒药物、解毒药物制剂、去污组合物,以及磷酸化和非磷酸化重组胆碱酯酶突变体本身。