Abstract
Behcet’s disease (BD) is a chronic inflammatory vasculitis and clinically heterogeneous disorder caused by immunocyte aberrations. Comprehensive research on gene expression patterns in BD illuminating its aetiology is lacking. E-MTAB-2713 downloaded from ArrayExpress was analysed to screen differentially expressed genes (DEGs) using limma. Random forest (RF) and neural network (NN) classification models composed of gene signatures were established using the E-MTAB-2713 training set and subsequently verified using GSE17114. Single sample gene set enrichment analysis was used to assess immunocyte infiltration. After identifying DEGs in E-MTAB-2713, pathogen-triggered, lymphocyte-mediated and angiogenesis- and glycosylation-related inflammatory pathways were discovered to be predominant in BD episodes. Gene signatures from the RF and NN diagnostic models, together with genes enriched in angiogenesis and glycosylation pathways, well discriminated the clinical subtypes of BD manifesting as mucocutaneous, ocular and large vein thrombosis involvement in GSE17114. Moreover, a distinctive immunocyte profile revealed T, NK and dendritic cell activation in BD compared to the findings in healthy controls. Our findings suggested that EPHX1, PKP2, EIF4B and HORMAD1 expression in CD14+ monocytes and CSTF3 and TCEANC2 expression in CD16+ neutrophils could serve as combined gene signatures for BD phenotype differentiation. Pathway genes comprising ATP2B4, MYOF and NRP1 for angiogenesis and GXYLT1, ENG, CD69, GAA, SIGLEC7, SIGLEC9 and SIGLEC16 for glycosylation also might be applicable diagnostic markers for subtype identification.
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Data availability
The dataset presented in this study can be found in ArrayExpress (https://www.ebi.ac.uk/arrayexpress/) and Gene Expression Omnibus (GEO) (http://www.ncbi.nlm.nih.gov/geo/) (GSE61399 and GSE17114).
Abbreviations
- AAV :
-
ANCA-associated vasculitis
- APC :
-
Antigen presenting cells
- AUC :
-
Area under the curve
- BD :
-
Behcet’s disease
- BP :
-
Biological process
- CCR :
-
Chemokine receptor
- CMV :
-
Cytomegalovirus
- C3 :
-
Complement 3
- DEG :
-
Differentially expressed gene
- FDR :
-
False discovery rate
- GEO :
-
Gene Expression Omnibus
- GO :
-
Gene Ontology
- GWAS :
-
Genome-wide association study
- HC :
-
Healthy control
- HSV :
-
Herpes simplex virus
- HLA :
-
Human leukocyte antigen
- IBD :
-
Inflammatory bowel disease
- iDC :
-
Immature dendritic cells
- IFN :
-
Interferon
- IL :
-
Interleukin
- KEGG :
-
Kyoto Encyclopedia of Genes and Genomes
- MB :
-
BD patients with mucocutaneous manifestations
- MG :
-
Module genes
- NK :
-
Natural killer cell
- NN :
-
Neural network
- OB :
-
BD patients with ocular involvement
- PCR :
-
Polymerase chain reaction
- pDC :
-
Plasmacytoid dendritic cell
- PG :
-
Paramount genes
- PPI :
-
Protein–protein Interaction
- pSS :
-
Primary Sjögren’s syndrome
- RA :
-
Rheumatoid arthritis
- RF :
-
Random forest
- ROC :
-
Receiver operating characteristic
- SLE :
-
Systemic lupus erythematosus
- ssGSEA :
-
Single sample gene set enrichment analysis
- Tfh :
-
Follicular helper T cell
- TNF :
-
Tumor necrosis-like factors
- Th :
-
Helper T cell
- Treg :
-
Regulatory T cell
- VB :
-
BD patients with large vein thrombosis
- WGCNA :
-
Weighted correlation network analysis
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Acknowledgements
The authors would like to express special gratitude to the researchers of the datasets of E-MTAB-2713, GSE17114 and GSE61399.
Funding
This research was supported by grants from the National Key Research and Development Program of China (2018YFE0207300), Beijing Municipal Natural Science Foundation Project (7234383) and the National Natural Science Foundation of China Grants (81871302).
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Professor YZL conceived and designed the research. PhD. HTZ extracted the data, performed the software analysis and visualized the graphs and tables. PhD. LLC and HLL supervised the statistical analyses. PhD. HTZ, YML, HLL, YH, XML and SXY categorised the graphs and tables. PhD. HTZ wrote the paper. All authors are accountable for all aspects of the study and attest to the accuracy and integrity of the results. The authors have read and approved the final manuscript as submitted.
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Zhan, H., Cheng, L., Li, H. et al. Integrated analyses delineate distinctive immunological pathways and diagnostic signatures for Behcet’s disease by leveraging gene microarray data. Immunol Res 71, 860–872 (2023). https://doi.org/10.1007/s12026-023-09398-w
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DOI: https://doi.org/10.1007/s12026-023-09398-w