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首页> 外文期刊>International Journal of Biological Macromolecules: Structure, Function and Interactions >Binding of pDNA with cDNA using hybridization strategy towards monitoring of Haemophilus influenza genome in human plasma samples
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Binding of pDNA with cDNA using hybridization strategy towards monitoring of Haemophilus influenza genome in human plasma samples

机译:使用杂交策略在人血浆样品中使用杂交策略与杂交型流感基因组进行杂交策略的结合

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Haemophilus Influenza leads to respiratory infections such as sinusitis, acute otitis media, pneumonia and bronchitis. In addition, it causes invasive infections such as cellulite, septic arthritis, and meningitis. Therefore, quick and sensitive detection of H. influenza is of great importance in medical microbiology. In this study, a novel DNA-based bioassay was developed to the monitoring of Haemophilus influenza genome in human plasma samples using binding of pDNA with cDNA. DNA hybridization strategy was used to investigation of DNAs binding. For this purpose, silver nanoparticle doped graphene quantum dots inks functionalized by D-penicillamine (Ag NPs-DPA-GQDs) were synthesized and deposited on the surface of glass carbon electrode (GCE). Also, gold nanoparticles functionalized with cysteamine (CysA-AuNPs) were deposited on the surface of the Ag-DPA-GQDs modified GCE. Afterward, thiolated DNA probe was immobilized on the surface of the modified electrode. DNA hybridization was monitored using square wave voltammetry (SWV) technique. Engineered genosensor indicated good performance with high specificity and sensitivity for detection of Haemophilus influenza genome. Under optimal conditions, linear range and low limit of quantitation (LLOQ) were obtained as target concentrations ranging from 1 pM-1 ZM and 1 ZM, respectively. The designed biosensor also showed high capability of discriminating one-base, two-base and three-base mismatched sequences. Also, the prepared genosensor could be easily regenerated and reused to evaluate hybridization process. (C) 2020 Published by Elsevier B.V.
机译:嗜血杆菌流感导致呼吸道感染如鼻窦炎,急性中耳炎,肺炎和支气管炎。此外,它会导致侵入性感染,如脂肪团,脓肠梗性关节炎和脑膜炎。因此,在医学微生物学中,甲型流感的快速和敏感的检测非常重要。在该研究中,使用PDNA与cDNA的结合来制定新的DNA基生物测定以监测人血浆样品中的嗜血杆菌样品中的监测。 DNA杂交策略用于研究DNA结合。为此目的,通过D-青霉胺(Ag NPS-DPA-GQDS)官能化的银纳米颗粒掺杂石墨烯量子点油墨被合成并沉积在玻璃碳电极(GCE)的表面上。此外,沉积在Ag-DPA-GQDS改性GCE的表面上沉积官能化的金纳米颗粒(Cysa-AUNP)。之后,将硫醇化DNA探针固定在改性电极的表面上。使用方波伏安法(SWV)技术监测DNA杂交。工程化学传感器表现出良好的性能,具有高特异性和对嗜血杆菌流感基因组检测的敏感性。在最佳条件下,作为靶浓度分别获得从1μm-1 ZM和1 ZM的目标浓度获得线性范围和低限制。设计的生物传感器还显示出鉴别单碱基,双基和三碱基错配序列的高能力。此外,可以容易地再生制备的遗传传感器并重复使用以评估杂交过程。 (c)2020由elsevier b.v发布。

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