Serum peptidome patterns of human systemic lupus erythematosus based on magnetic bead separation and MALDI-TOF mass spectrometry analysis

被引:34
|
作者
Dai, Y. [1 ]
Hu, C. [1 ]
Wang, L. [1 ]
Huang, Y. [1 ]
Zhang, L. [1 ]
Xiao, X. [1 ]
Tan, Y. [1 ]
机构
[1] Jinan Univ, Shenzhen Peoples Hosp, Clin Med Coll 2, Shenzhen 518020, Guangdong, Peoples R China
关键词
RHEUMATOID-ARTHRITIS; BIOMARKER DISCOVERY; ASSOCIATION; PROTEINS; STAT4; RISK;
D O I
10.3109/03009740903456292
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Methods: Based on the Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) 2000, 50 SLE patients were divided into two subgroups: 25 were defined as stable SLE (SLEDAI < 8) and 25 as active SLE (SLEDAI > 8). Twenty-five patients with rheumatoid arthritis (RA) and 24 healthy donors were also included and underwent analysis. We performed magnetic beads-based weak cation exchange chromatography (MB-WCX) for sample processing and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) for peptide profiling. ClinProt software 2.1 was used for data analysis and a genetic algorithm was modelled for class prediction. Results: A series of significant short peptides was detected. Classification models were developed to classify samples across normal controls, active SLE patients, and stable SLE patients, and achieved high capability of prediction and cross-validation. Blinded verification of the classification model showed 91.7% sensitivity in active SLE, 83.3% sensitivity in stable SLE, and 86.7% specificity in normal controls. Conclusion: We have completed a preliminary study to describe the serum peptide profile of SLE and improve the diagnosis of SLE from an integrated perspective of peptide mass patterns.
引用
收藏
页码:240 / 246
页数:7
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