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Proteomics Analysis for Verification of Rheumatoid Arthritis Biomarker Candidates Using Multiple Reaction Monitoring
Author(s) -
Lee Jiyeong,
Mun Sora,
Kim Doojin,
Lee YouRim,
Sheen DongHyuk,
Ihm Chunhwa,
Lee Seung Hoon,
Kang HeeGyoo
Publication year - 2019
Publication title -
proteomics – clinical applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.948
H-Index - 54
eISSN - 1862-8354
pISSN - 1862-8346
DOI - 10.1002/prca.201800011
Subject(s) - rheumatoid arthritis , biomarker , proteomics , autoantibody , medicine , biomarker discovery , transthyretin , quantitative proteomics , synovial membrane , arthritis , immunology , antibody , biology , biochemistry , gene
Purpose Rheumatoid arthritis (RA) is an autoimmune disease in which autoantibodies attack the synovial membrane, causing joint inflammation. Blood tests would offer a powerful, minimally invasive method for early diagnosis of RA. However, no reliable biomarkers for RA are presently available. The aim is to develop biomarkers for RA by multiple reaction monitoring (MRM)‐based quantification of candidate biomarkers. Experimental design Proteomics approaches are commonly used to identify and verify disease biomarkers. For discovery of biomarkers for RA, SWATH acquisition is performed and selected candidate biomarkers are validated by MRM. Target serum proteins are compared between patients with RA and healthy controls divided into three groups based on rheumatoid factor level. Results A total of 45 differentially expressed proteins are identified, as determined by SWATH acquisition. Of these, 13 proteins are selected as novel candidate biomarkers. A total of five proteins (transthyretin, gelsolin, angiotensinogen, lipopolysaccharide‐binding protein, and protein S100‐A9) are shown to have the potential to distinguish patients with RA from healthy controls. Conclusions and clinical relevance These five proteins may improve the efficiency of diagnosis of RA. MRM can be used to easily diagnose RA by detecting five proteins simultaneously in a single sample with high sensitivity.