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    • 40. 发明申请
    • DETECTION SYSTEM
    • 检测系统
    • WO2005001118A3
    • 2005-04-21
    • PCT/GB2004002685
    • 2004-06-23
    • PLANT BIOSCIENCE LTDHUTCHINGS MATTHEW IANHONG HEE-JEONBUTTNER MARK JEREMY
    • HUTCHINGS MATTHEW IANHONG HEE-JEONBUTTNER MARK JEREMY
    • C12N9/10C12Q1/18C12Q1/48C12N1/00C12Q1/37
    • C12N9/104C12Q1/18C12Q1/48
    • The invention provides a methods and materials for detecting an activity of a glycopeptide antibiotic (such as a vancomycin-type antibiotic), in a sample, the method comprising the steps of: (a) providing a microorganism in which a first endogenous gene encoding peptidyltransferase activity is inactivated, which activity is necessary for growth of the microorganism, and which activity can be complemented by a second, different, peptidyltransferase, which second peptidyltransferase is inducible in the microorganism by the presence of the antibiotic, (b) contacting the sample with the microorganism, (c) observing the microorganism for growth, wherein growth of the microorganism is correlated with the presence of the antibiotic. Unlike systems of the prior art, the system does not rely on the expression of a heterologous reporter gene in order to detect antibiotic activity, but instead utilises a "drug dependent" microorganism that can only grow in the presence of antibiotics that act as inducers of the relevant genes.
    • 本发明提供了用于检测样品中糖肽类抗生素(例如万古霉素类抗生素)活性的方法和材料,所述方法包括以下步骤:(a)提供微生物,其中编码肽基转移酶的第一内源基因 活性是失活的,该活性对于微生物的生长是必需的,并且该活性可以通过第二种不同的肽基转移酶补充,该第二肽基转移酶在微生物中通过抗生素的存在是可诱导的,(b)使样品与 (c)观察微生物生长,其中微生物的生长与抗生素的存在相关。 与现有技术的系统不同,该系统不依赖于异源报道基因的表达来检测抗生素活性,而是使用仅在抗生素存在下生长的“药物依赖性”微生物,所述抗生素作为 相关的基因。