Department of Biomedical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland.
Department of Bioorganic Chemistry, Wroclaw University of Science and Technology, Wrocław, Poland.
Methods Mol Biol. 2022;2340:281-307. doi: 10.1007/978-1-0716-1546-1_13.
Experimental studies of amyloids encounter many challenges. There are many methods available for studying proteins, which can be applied to amyloids: from basic staining techniques, allowing visualization of fibers, to complex methods, e.g., AFM-IR used to their detailed biochemical and structural characterization in nanoscale. Which method is appropriate depends on the goal of an experiment: verification of aggregational properties of a peptide, distinguishing oligomers from mature fibers, or kinetic studies. Insolubility, rapid aggregation, and the need of using a high-purity peptide may be a limiting factor in studies involving amyloids. Moreover, the results obtained by various experimental methods often differ significantly, which may lead to misclassification of amyloid peptides. Due to ambiguity of experimental results, laborious and time-consuming analysis, bioinformatical methods become more widely used for amyloids.
淀粉样蛋白的实验研究面临许多挑战。有许多可用于研究蛋白质的方法也适用于淀粉样蛋白：从基本的染色技术，允许纤维可视化，到复杂的方法，例如 AFM-IR，用于在纳米尺度上对其进行详细的生化和结构表征。选择哪种方法取决于实验的目的：验证肽的聚集特性、将低聚物与成熟纤维区分开来，还是进行动力学研究。不溶性、快速聚集以及需要使用高纯度肽可能是涉及淀粉样蛋白的研究中的限制因素。此外，各种实验方法获得的结果往往差异很大，这可能导致淀粉样肽的错误分类。由于实验结果的不明确性，以及分析既繁琐又耗时，生物信息学方法在淀粉样蛋白研究中得到了更广泛的应用。
