1. Proteomic analysis of biomarkers predicting the response to triple therapy in patients with rheumatoid arthritis.
- Author
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Chen J, Tang MS, Xu LC, Li S, Ge Y, Du JF, Xie X, Tian J, Chen JW, and Li F
- Subjects
- Antibodies immunology, Female, Gene Ontology, Humans, Interleukin-17 metabolism, Male, Middle Aged, Protein Interaction Maps, Signal Transduction, Tumor Necrosis Factor-alpha metabolism, Antirheumatic Agents therapeutic use, Arthritis, Rheumatoid drug therapy, Arthritis, Rheumatoid metabolism, Biomarkers metabolism, Proteomics methods
- Abstract
Objective: Patients with rheumatoid arthritis (RA) usually receive triple therapy with methotrexate (MTX), leflunomide (LEF) and infliximab (IFX), but nearly one-third of them do not respond to triple therapy. This study aimed to identify biomarkers for predicting the efficacy of triple therapy to optimize personalized treatment of RA., Methods: All 20 enrolled patients met 2010 ACR/EULAR criteria for RA and were classified into good, moderate and non-responders (GR, MR, NR) for triple therapy. The Responders (R) were defined as the sum of GR and MR. Protein profiles of 4 responders and 4 non-responders were investigated via isobaric tags for relative and absolute quantification (iTRAQ), and differentially expressed proteins (DEPs) with high-confidence peptides were validated in 15 responders and 5 non-responders by parallel response monitoring (PRM)., Results: iTRAQ identified 51 DEPs between responders and non-responders (p < 0.05, fold change >±1.2). The top five up-regulated DEPs were B7Z7M2, A0A087WZR4, Q53FL1, P08254 and G3V2V8, while the top five down-regulated proteins were Q6MZX9, B3KP77, P0DJI9, P0DJI8 and P02787. Targeted mass spectrometry by PRM identified 10 candidate biomarkers, and 3 DEPs including fibrinogen beta chain, epididymal secretory protein Li 282 and testicular tissue protein Li 70 were confirmed as predictive biomarkers., Conclusion: This study demonstrated the feasibility of exploring biomarkers by applying iTRAQ and PRM mass spectrometry techniques, and a panel of biomarkers were identified to predict clinical response of IFX + MTX + LEF treatment in active RA patients., (Copyright © 2019 The Author. Published by Elsevier Masson SAS.. All rights reserved.)
- Published
- 2019
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