Protein fractionation for proteomics using the SAINOME-plate

Yoko Ino, H. Kagawa, Tomoko Akiyama, Yusuke Nakai, Sakura Ito, M. Shimoda, Makiko Kawamura, H. Hirano, Y. Kimura
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引用次数: 1

Abstract

SUMMARY The SAINOME-plate consists of a 384-well plate and a cover that contains a cutter, which can cut a polyacryl-amide gel into approximately 4.5-mm square pieces following electrophoresis. In this study, we applied SDS-PAGE and the SAINOME-plate to fractionation of protein mixtures from cell extracts or serum for proteomic approaches. Compared with gel-fractionation using a cutter or a scalpel, SAINOME-plate gel-fractionation is simpler and higher-throughput. In terms of reproducibility of proteomic profiling, SAINOME-plate gel-fractionation was comparable to scalpel gel-fractionation. Additionally, human keratin contamination was lower with the SAINOME-plate than with a scalpel. In serum protein fractionation, the number of proteins identified increased approximately 2-fold and 3.7-fold relative to non-fractionation when the gel was divided into 8 and 96 fractions, respectively. The results demonstrate that the SAINOME-plate gel-fractionation will be a useful method in mass spectrometry-based proteomics.
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使用SAINOME-plate进行蛋白质组学的蛋白质分离
SAINOME-plate由384孔板和一个带有刀具的盖子组成,该刀具可以在电泳后将聚丙烯酰胺凝胶切割成大约4.5 mm的正方形。在这项研究中,我们应用SDS-PAGE和SAINOME-plate从细胞提取物或血清中分离蛋白质混合物,用于蛋白质组学方法。与刀具或手术刀凝胶分馏相比,SAINOME-plate凝胶分馏更简单,通量更高。在蛋白质组学分析的可重复性方面,SAINOME-plate凝胶分离与手术刀凝胶分离相当。此外,与手术刀相比,SAINOME-plate对人角蛋白的污染更低。在血清蛋白分离中,当凝胶分为8个和96个部分时,鉴定出的蛋白质数量分别比未分离时增加了约2倍和3.7倍。结果表明,SAINOME-plate凝胶分离将是一种有效的基于质谱的蛋白质组学方法。
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