Quantitative and Qualitative Protein Expression Mapping of Highly Enriched G-CSF Mobilized CD34+ Stem Cells from Peripheral Blood.

Background: Proteome analysis is a direct measurement of proteins in terms of their presence and relative abundance in a defined system. The overall aim of a proteomic study is characterization of the complex network of cell regulation. Different states of a cell can be compared and specific qualitative and quantitative protein changes can be identified. We focused our first proteom-investigations on G-CSF mobilized CD34+ stem cells from peripheral blood (PB).