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    • 4. 发明授权
    • Methods and compounds for detecting beta-lactamase activity
    • 检测β-内酰胺酶活性的方法和化合物
    • US09476087B2
    • 2016-10-25
    • US14326215
    • 2014-07-08
    • Nanyang Technological University
    • Bengang XingXianfeng HuangTingting JiangRongrong Liu
    • C12Q1/34C07D501/04C07D501/18C07D501/16C07D519/06
    • C12Q1/34C07D501/04C07D501/16C07D501/18C07D519/06G01N2333/986
    • The present invention relates to compounds for and a method of detecting beta-lactamase activity in a sample. The sample is contacted with a nanoparticulate tag. The nanoparticulate tag comprises a metal or a combination of metals, or it comprises a nanotube of a metal, boron nitride and/or carbon. The respective metal is capable of forming one of a covalent bond, a coordinative bond and a non-covalent interaction with a thio or a seleno group. The sample is contacted with a compound of one of general formulas (I)-(III) and (VII)-(IX). At least one beta-lactam moiety of the compound is cleaved by the beta-lactamase activity in the sample. As a result a cleavage moiety Z-A-Z, Z-A-Z—R15, Z-A-Z—R16, Z-A-Z—R17, Z-A-Z—R18 or Z-G-N(R8)R9 is released that is immobilized on the surface of the nanoparticulate tag by a covalent bond via a Z atom. The presence of beta-lactamase activity is determined based on the presence of the cleavage moiety immobilized onto the surface of the nanoparticulate tag.
    • 本发明涉及用于检测样品中β-内酰胺酶活性的化合物和方法。 样品与纳米颗粒标签接触。 纳米颗粒标签包括金属或金属的组合,或者它包括金属,氮化硼和/或碳的纳米管。 相应的金属能够形成共价键,配位键和与硫代或硒基的非共价相互作用之一。 将样品与通式(I) - (III)和(VII) - (IX)之一的化合物接触。 化合物的至少一个β-内酰胺部分被样品中的β-内酰胺酶活性切割。 结果,通过Z原子通过共价键将解离部分Z-A-Z,Z-A-Z-R15,Z-A-Z-R16,Z-A-Z-R17,Z-A-Z-R18或Z-G-N(R8)R9释放固定在纳米颗粒标签的表面上。 基于固定在纳米颗粒标签表面上的切割部分的存在来确定β-内酰胺酶活性的存在。
    • 6. 发明申请
    • METHOD OF IDENTIFYING METALLO-BETA-LACTAMASE-PRODUCING BACTERIA
    • 鉴定生产金属 - β-谷氨酸酶的细菌的方法
    • US20120064557A1
    • 2012-03-15
    • US13260965
    • 2010-03-31
    • Akihiro Morinaka
    • Akihiro Morinaka
    • C12Q1/34
    • C12Q1/04C12Q1/045C12Q1/34G01N2333/986
    • An object of the present invention is to provide a method of identifying metallo-β-lactamase-producing bacteria, particularly, a method of conveniently identifying an IMP or VIM type. According to the present invention, there is provided a method of detecting metallo-β-lactamase-producing bacteria, comprising spotting a compound (I) onto a surface of a solid medium coated with the bacteria to be tested, spotting 3 types of β-lactam agents at 3 respective positions different from the spot of the compound (I), culturing the solid medium, and then detecting the metallo-β-lactamase-producing bacteria based on the shape of an inhibition zone formed around the spot of each of the β-lactam agents. There is further provided a method of identifying an IMP or VIM type of the metallo-β-lactamase-producing bacteria.
    • 本发明的目的是提供一种识别产生金属 - β-内酰胺酶的细菌的方法,特别是方便地鉴定IMP或VIM型的方法。 根据本发明,提供了一种检测产生金属 - β-内酰胺酶的细菌的方法,其包括将化合物(I)放在涂覆有待测试细菌的固体培养基的表面上,发现3种类型的 ;在与化合物(I)的斑点不同的3个位置处的内酰胺试剂,培养固体培养基,然后基于形成在所述化合物(I)的斑点周围的抑制区的形状来检测产生金属和β-内酰胺酶的细菌 每个&bgr。 - 内酰胺代理。 还提供了鉴定产生金属 - β-内酰胺酶的细菌的IMP或VIM类型的方法。
    • 8. 发明授权
    • Substrates for beta-lactamase and uses thereof
    • β-内酰胺酶底物及其用途
    • US08071761B2
    • 2011-12-06
    • US11606642
    • 2006-11-29
    • Roger Y. TsienGregor Zlokarnik
    • Roger Y. TsienGregor Zlokarnik
    • C07D501/14
    • C07D501/36C07D501/00C07D505/00C07D519/00C12N9/86C12N15/85C12N2800/90C12N2830/002C12P17/184C12P17/188C12P35/00C12Q1/18C12Q1/34C12Q1/6897C12Q2334/00G01N2333/986G01N2415/00Y10S435/805
    • Substrates for β-lactamase of the general formula I in which one of X and Y is a fluorescent donor moiety and the other is a quencher (which may or may not re-emit); R′ is selected from the group consisting of H, lower (i.e., alkyl of 1 to about 5 carbon atoms) and (CH2)nOH, in which n is 0 or an integer from 1 to 5; R″ is selected from the group consisting of H, physiologically acceptable metal and ammonium cations, —CHR2OCO(CH2)nCH3, —CHR2OCOC (CH3)3, acylthiomethyl, acyloxy-alpha-benzyl, delta-butyrolactonyl, methoxycarbonyloxymethyl, phenyl, methylsulphinylmethyl, beta-morpholinoethyl, dialkylaminoethyl, acyloxyalkyl, dialkylaminocarbonyloxymethyl and aliphatic, in which R2 is selected from the group consisting of H and lower alkyl; A is selected from the group consisting of S, O, SO, SO2 and CH2; and Z′ and Z″ are linkers for the fluorescent donor and quencher moieties. Methods of assaying β-lactamase activity and monitoring expression in systems using β-lactamase as a reporter gene also are disclosed.
    • X和Y中的一个是荧光供体部分,另一个是猝灭剂(其可以或不再发射)的通式I的β-内酰胺酶底物; R'选自H,低级(即1至约5个碳原子的烷基)和(CH 2)nOH,其中n为0或1至5的整数; -CH 2 COO(CH 2)n CH 3,-CHR 2 OCOC(CH 3)3,酰基硫代甲基,酰氧基-α-苄基,δ-丁基内酰胺,甲氧基羰氧基甲基,苯基,甲基亚磺酰基甲基, β-吗啉基乙基,二烷基氨基乙基,酰氧基烷基,二烷基氨基羰氧基甲基和脂族基,其中R2选自H和低级烷基; A选自S,O,SO,SO 2和CH 2; 和Z'和Z“是荧光供体和猝灭剂部分的接头。 公开了使用β-内酰胺酶作为报道基因的系统中测定β-内酰胺酶活性和监​​测表达的方法。
    • 9. 发明授权
    • Bioluminogenic assay system for measuring beta-lactamase activity
    • 用于测量β-内酰胺酶活性的生物发光测定系统
    • US07867758B2
    • 2011-01-11
    • US12060864
    • 2008-04-01
    • Jianghong RaoMin-kyung SoHequan Yao
    • Jianghong RaoMin-kyung SoHequan Yao
    • C12M1/00C12Q1/34
    • C12Q1/66C12Q1/34G01N2333/986
    • A bioluminogenic assay system including: providing a bioluminogenic substrate incorporating a beta-lactam antibiotic, a bioluminescence initiating compound, and a chemical linkage joining the beta-lactam antibiotic to the bioluminescence initiating compound; exposing the bioluminogenic substrate to a beta-lactamase enzyme that catalyzes the release of the bioluminescence initiating compound from the bioluminogenic substrate; co-exposing the bioluminogenic substrate to a bioluminescence indicator reaction that employs the bioluminescence initiating compound as a substrate; and detecting a light from the bioluminescence indicator reaction as a measure of the activity of the beta-lactamase enzyme.
    • 生物发光测定系统,包括:提供掺入β-内酰胺抗生素的生物发光底物,生物发光引发化合物和将β-内酰胺抗生素与生物发光引发化合物连接的化学键; 将生物发光底物暴露于催化生物发光起始化合物从生物发光底物释放的β-内酰胺酶; 将生物发光底物共同暴露于采用生物发光引发化合物作为底物的生物发光指示剂反应; 并检测来自生物发光指示剂反应的光作为β-内酰胺酶活性的量度。