Journal of Proteomics & Bioinformatics
Open Access
ISSN: 0974-276X
ISSN: 0974-276X
Ebrahim Zandi
Norris Cancer Comprehensive Cancer Center, Keck School of Medicine, Los Angeles, California
Tanzania
Research Article
Multidimensional Separation Using HILIC and SCX Pre-fractionation for RP LC-MS/MS Platform with Automated Exclusion List-based MS Data Acquisition with Increased Protein Quantification
Author(s): Yu Zhou, Zhen Meng, Maria Edman-Woolcott, Sarah F Hamm-Alvarez and Ebrahim ZandiYu Zhou, Zhen Meng, Maria Edman-Woolcott, Sarah F Hamm-Alvarez and Ebrahim Zandi
Liquid chromatography–mass spectrometry (LC-MS) based proteomics is one of the most widely used analytical platforms for global protein discovery and quantification. One of the challenges is the difficulty of identifying low abundance biomarker proteins from limited biological samples. Extensive fractionation could expand proteomics dynamic range, however, at the cost of high sample and time consumption. Extensive fractionation would increase the sample need and the labeling cost. Also quantitative proteomics depending on high resolution MS have the limitation of spectral acquisition speed. Those practical problems hinder the in-depth quantitative proteomics analysis such as tandem mass tag (TMT) experiments. We found the joint use of hydrophilic interaction liquid chromatography (HILIC) and strong cation exchange Chromatography (SCX) prefractionation at medium level could impro.. View More»
DOI:
10.4172/jpb.1000378