RAPID: Highly Specific and Sensitive Detection of Ebola Virus from Blood

1509759-桑坦格拉为了缓解埃博拉感染的传播，在症状出现之前对患者进行病毒检测是当务之急。这就要求对病毒进行快速、灵敏和特异的检测。目前的方法缺乏敏感性和易用性。该项目将采用作者之前检测患者血液中超低埃博拉浓度的方法。将开发两种新的方法；一种可以在现场使用，另一种更严格，适合实验室测试。这些方法有望降低埃博拉疫情的传播速度。目前，定量聚合酶链式反应是检测埃博拉病毒的最先进方法，通常是从血液样本中检测。然而，这些测试是时间密集型的，需要高度的专业知识才能进行。此外，当患者体内的病毒浓度相对较高时，该方法也很有用。考虑到作为隔离策略的一部分需要对大量人进行检测，改进早期诊断势在必行。因此，该项目的目的是开发一种更灵敏的方法来检测埃博拉病毒RNA(VRNA)和单个病毒颗粒。研究小组将开发一种适用于现场应用的全血中病毒RNA的单管检测方法。此外，还将开发一种基于载玻片的检测单个病毒颗粒的方法，通过检测vRNA与蛋白质的相互作用，具有适合实验室设置的单个病毒粒子的灵敏度。在这两种情况下，将使用多肽标记、单个RNA敏感、RNA成像探针和邻近连接分析(PLA)方法。结果将与目前的方法进行比较，以证明改进的灵敏度。结合定点探针结合和距离依赖的检测和扩增，将确保特异性(零错误)和灵敏度(10拷贝/毫升)。

1509759 - SantangeloIn order to mitigate the spread of Ebola infections, detecting the virus in patients before the onset of symptoms is imperative. This requires, fast, sensitive and specific detection of the virus. Current methods lack sensitivity and ease of use. This project will adapt the author's previous method for detecting ultra low Ebola concentration in patient's blood. Two new methods will be developed; one can be used in the field and the second one, which is more rigorous, is suitable for laboratory tests. These methods are expected to reduce the rate at which Ebola epidemic spreads.Currently quantitative PCR is the state-of-the-art for Ebola detection, typically from blood samples. These tests though, are time intensive and require a high degree of expertise to perform. Further the method is useful when viral concentration is relatively high in the patient. Given the need to test large numbers of people as a part of quarantine strategies, improved early diagnostics are imperative. Therefore the aim of the project is to develop a more sensitive approach to detecting Ebola viral RNA (vRNA) and single viral particles. The research team will develop a single tube assay for detecting viral RNA in whole blood, suitable for field application. In addition, a slide-based assay for detecting single viral particles will also be developed, through the detection of vRNA-protein interactions, with single virion sensitivity suitable for a laboratory setting. In both cases, peptide labeled, single RNA sensitive, RNA imaging probes and proximity ligation assay (PLA) methods will be utilized. The results will be compared with current methods to demonstrate the improved sensitivity. The combinations of both site-specific probe binding and distance-dependent detection and amplification, will ensure both specificity (zero errors) and sensitivity (10 copies/ml).