作者: Amit Kumar Yadav , Gourav Bhardwaj , Trayambak Basak , Dhirendra Kumar , Shadab Ahmad
DOI: 10.1371/JOURNAL.PONE.0024442
关键词:
摘要: Plasma is the most easily accessible source for biomarker discovery in clinical proteomics. However, identifying potential biomarkers from plasma a challenge given large dynamic range of proteins. The are generally present at very low abundance levels and hence identification these proteins necessitates depletion highly abundant Sample pre-fractionation using immuno-depletion high multi-affinity removal system (MARS) has been popular method to deplete multiple can result concomitant Although there some reports suggesting non-targeted proteins, predominant view that number such small. In this study, we identified removed along with targeted Three samples were depleted each three MARS (Hu-6, Hu-14 Proteoprep 20) cartridges. affinity bound fractions subjected gelC-MS an LTQ-Orbitrap instrument. Using four database search algorithms including MassWiz (developed house), selected peptides <1% FDR. Peptides by least two protein identification. After rigorous bioinformatics analysis, 101 confidence. Thus, believe proper quantitation it might be better study both any sample.