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    • 10. 发明申请
    • NON-INVASIVE TUMOR IMAGING BY TUMOR-TARGETED BACTERIA
    • 通过肿瘤标记的细菌进行非侵入性肿瘤成像
    • WO0125399A2
    • 2001-04-12
    • PCT/US0027397
    • 2000-10-04
    • VION PHARMACEUTICALS INCSLOAN KETTERING INST CANCER
    • BERMUDES DAVID GKING IVAN CHEUNG-LAMBLASBERG RONALD GTJUVAJEV JURI G
    • A61K49/00A61P35/00C12N
    • A61K49/0045A61K49/0047A61K49/0097
    • The present invention provides non-invasive compositions and methods to detect solid tumors using tumor-targeted bacteria. specifically, the present invention provides compositions and methods for detecting solid tumors in vivo by delivery of a marker gene to a solid tumor via a population of tumor-targeted bacteria, methods for detecting solid tumors by detecting a compound incorporated into the bacteria, methods for detecting solid tumors by detecting an infection caused by the bacteria at the tumor site(s), methods for detecting solid tumors by detecting an antigen present on the surface of the bacterial vectors. When detecting a tumor entails detecting a marker gene product expressed by the tumor-targeted bacteria, the marker gene product can be detected directly in the tumor, by the use of a labeled moiety that interacts with the marker gene product, or by the use of the labeled marker substrate. Thus, if a marker gene product is directly detectable, it can be detected directly. When a marker gene product is not directly detectable, a labeled moiety that interacts with the marker gene product is detected, or a labeled marker substrate is used and a labeled marker metabolite is detected. A tumor can thus be localized or detected by scanning a subject to detect the marker gene product, a labeled complex comprising the marker gene product and its interacting moiety, or a labeled marker metabolite, respectively, thereby imaging the tumor. Specifically, the attenuated tumor-targeted bacteria of the invention are facultative aerobes or facultative anaerobes which are modified to encode the marker gene. Still further, this invention provides compositions and methods of simultaneously imaging and treating a tumor in a subject using one or a plurality of populations tumor-targeted organisms. The invention provides non-invasive, clinically applicable methods for imaging tumors which can be implemented using existing imaging techniques to monitor and evaluate in vivo cancer treatments in human subjects. Kits are also provided.
    • 本发明提供使用肿瘤靶向细菌检测实体瘤的非侵入性组合物和方法。 具体地,本发明提供通过肿瘤靶向细菌群体将标记基因递送至实体瘤的体内检测实体瘤的组合物和方法,通过检测化合物检测实体瘤的方法 通过检测由肿瘤部位的细菌引起的感染来检测实体瘤的方法,通过检测存在于细菌载体表面上的抗原来检测实体瘤的方法。 当检测肿瘤需要检测由肿瘤靶向细菌表达的标志物基因产物时,可以通过使用与标记基因产物相互作用的标记部分直接在肿瘤中检测标记基因产物,或通过使用 标记标记底物。 因此,如果标记基因产物是直接可检测的,则可以直接检测。 当标记基因产物不能直接检测时,检测到与标记基因产物相互作用的标记部分,或使用标记的标记底物并检测标记的标记物代谢物。 因此,可以通过扫描受试者来分析肿瘤,以分别检测标记基因产物,包含标记基因产物及其相互作用部分的标记复合物或标记的标记物代谢物,从而对肿瘤进行成像。 具体地,本发明的减毒肿瘤靶向细菌是修饰以编码标记基因的兼性有氧运动或兼性厌氧菌。 此外,本发明提供了使用一个或多个群体肿瘤靶向生物体同时成像和治疗受试者肿瘤的组合物和方法。 本发明提供用于成像肿瘤的非侵入性临床适用方法,其可以使用现有成像技术来实施以监测和评价人类受试者的体内癌症治疗。 还提供套件。