title: Comparative proteome analyses of human plasma following in vivo lipopolysaccharide administration using multidimensional separations coupled with tandem mass spectrometry.
abstract: There is significant interest in characterization of the human plasma proteome due to its potential for providing biomarkers applicable to clinical diagnosis and treatment and for gaining a better understanding of human diseases. We describe here a strategy for comparative proteome analyses of human plasma, which is applicable to biomarker identifications for various disease states. Multidimensional liquid chromatography-mass spectrometry (LC-MS/MS) has been applied to make comparative proteome analyses of plasma samples from an individual prior to and 9 h after lipopolysaccharide (LPS) administration. Peptide peak areas and the number of peptide identifications for each protein were used to evaluate the reproducibility of LC-MS/MS and to compare relative changes in protein concentration between the samples following LPS treatment. A total of 804 distinct plasma proteins (not including immunoglobulins) were confidently identified with 32 proteins observed to be significantly increased in concentration following LPS administration, including several known inflammatory response or acute-phase mediators such as C-reactive protein, serum amyloid A and A2, LPS-binding protein, LPS-responsive and beige-like anchor protein, hepatocyte growth factor activator, and von Willebrand factor, and thus, constituting potential biomarkers for inflammatory response.
authors.affiliation: Biological Sciences Division and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, P.O. Box 999, MSIN: K8-98, Richland WA 99352, USA.
authors.forename: Wei-Jun
authors.initials: WJ
authors.lastname: Qian
authors.forename: Jon M
authors.initials: JM
authors.lastname: Jacobs
authors.forename: David G
authors.initials: DG
authors.lastname: Camp
authors.forename: Matthew E
authors.initials: ME
authors.lastname: Monroe
authors.forename: Ronald J
authors.initials: RJ
authors.lastname: Moore
authors.forename: Marina A
authors.initials: MA
authors.lastname: Gritsenko
authors.forename: Steve E
authors.initials: SE
authors.lastname: Calvano
authors.forename: Stephen F
authors.initials: SF
authors.lastname: Lowry
authors.forename: Wenzhong
authors.initials: W
authors.lastname: Xiao
authors.forename: Lyle L
authors.initials: LL
authors.lastname: Moldawer
authors.forename: Ronald W
authors.initials: RW
authors.lastname: Davis
authors.forename: Ronald G
authors.initials: RG
authors.lastname: Tompkins
authors.forename: Richard D
authors.initials: RD
authors.lastname: Smith
mesh_terms: D001798:Blood Proteins / Q000032:analysis*; D002852:Chromatography, Ion Exchange; D002853:Chromatography, Liquid; D019075:Electrophoresis, Capillary; D006801:Humans; D008070:Lipopolysaccharides / Q000008:administration & dosage*; D013058:Mass Spectrometry; D020543:Proteome / Q000032:analysis*; D015203:Reproducibility of Results; D013997:Time Factors; D015854:Up-Regulation / Q000187:drug effects
chemical_list: D001798:Blood Proteins; D008070:Lipopolysaccharides; D020543:Proteome