4.3 Article

A proteomic study of peripheral blood mononuclear cells in systemic lupus erythematosus

Journal

LUPUS
Volume 17, Issue 9, Pages 799-804

Publisher

SAGE PUBLICATIONS LTD
DOI: 10.1177/0961203308089444

Keywords

proteomics; systemic lupus erythematosus; 2-D gel electrophoresis

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Our objective was to analyze the changes in the protein expression profiles of peripheral blood mononuclear cells (PBMCs) in patients with systemic lupus erythematosus (SLE). Peripheral blood was obtained from patients with SLE and healthy controls. 2-D gel electrophoresis was performed, and gels were silver-stained. Differentially expressed protein spots were detected, some of which were identified by MALDI-TOF spectrometry. Match rates of 71% +/- 4% and 72% +/- 4% were gotten for control and patient gels, respectively. 791 17 spots were detected for control gels and 781 17 for patient gels. Eleven protein spots were Lip-regulated, and 9 protein spots were down-regulated in patients with SLE. Five differentially expressed proteins were identified as immunoglobulin J chain, apolipoprotein A-IV precursor, calprotectin L I H and zinc Finger protein Subfamily 1A (all up-regulated) and glutathione S-transferase (down-regulated), some of which had previously been shown to play a potential role in the pathogenesis of SLE. We conclude there are significant changes in the 2-D maps of PBMCs in patients with SLE and applying this proteomic approach may be a useful way to gain novel insights into SLE.

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