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Large-scale identification of protein in human urinary proteome by gel-free proteomic approach

机译:无凝胶蛋白质组学方法在人尿蛋白质中的大规模鉴定

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Many components in urine are useful in clinical diagnosis and urinary proteins are known as important components to define many diseases such as proteinuria, kidney, bladder and urinary tract diseases. Proteomic techniques have recently become available for large-scale protein analysis. Due to the inorganic salts or contaminants in urine, the utility of two-dimensional gel electrophoresis technique in identification of urinary proteins is poorly defined. In this study, urine proteins were prepared by different sample cleanup preparation method, and identified by nano-high performance liquid chromatography electrospray ionization tandem mass spectrometry followed by peptide fragmentation pattern. The experimental results demonstrated that a total of 311 unique proteins were identified from human urine sample, in which 104 proteins with higher confidence levels. The present study was designed to establish optimal techniques for the creation of a proteomic map of normal urinary proteins. Also, a discussion of novel approaches to urine protein cleanup and constituents is given. Keywords: proteomics, biomarker, urinary proteome, large-scale proteome, protein identification
机译:尿液中的许多组分可用于临床诊断和尿蛋白,称为重要组分,以确定许多蛋白尿,肾,膀胱和泌尿道疾病。蛋白质组学技术最近可用于大规模蛋白质分析。由于尿液中的无机盐或污染物,定义了二维凝胶电泳技术在鉴定尿蛋白的效用。在该研究中,通过不同的样品清洁制备方法制备尿蛋白,并通过纳米高效液相色谱电离电离串联质谱法鉴定,然后用肽片段化图案鉴定。实验结果表明,总共311个独特的蛋白质从人尿样中鉴定,其中104个蛋白质具有较高的置信度。本研究旨在建立常规尿蛋白的蛋白质组学地图的最佳技术。此外,给出了对尿蛋白清洁和成分的新方法的讨论。关键词:蛋白质组学,生物标志物,尿蛋白质组,大规模蛋白质组,蛋白质鉴定

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