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KMID : 0381120220440101215
Genes and Genomics
2022 Volume.44 No. 10 p.1215 ~ p.1229
The inflammatory signature in monocytes of Sjogren¡¯s syndrome and systemic lupus erythematosus, revealed by the integrated Reactome and drug target analysis
Lee Kyung-Eun

Mun Se-Young
Kim Song-Mi
Shin Won-Seok
Jung Won
Paek Joon
Lee Jung-Nam
Hudson Erin
Reeves Wesley H.
Han Kyu-Dong
Cha Seung-Hee
Abstract
Background: The innate immune regulation, especially by the type I IFN signature in the CD14+?monocytes, is known to be critical in the pathogenesis of autoimmune Sjogren¡¯s syndrome (SjS) and systemic lupus erythematosus (SLE).

Objective: Since patients with one condition can be overlapped with another, this study is to identify shared differentially expressed genes (DEGs) in SjS and SLE compared to healthy controls (HCs) and refine transcriptomic profiles with the integrated Reactome and gene-drug network analysis for an anti-inflammation therapy.

Methods: CD14+?monocytes were purified from whole blood of SjS and SLE patients (females, ages from 32 to 62) and subject to bulk RNA-sequencing, followed by data analyses for comparison with HC monocytes (females, ages 30 and 33). Functional categorizations, using Gene Ontology (GO) and the Reactome pathway analysis, were performed and DEGs associated with therapeutic drugs were identified from the Drug Repurposing Hub (DHUB) database.

Results: The GO analysis revealed that DEGs in the inflammatory response and the cellular response to cytokine were highly enriched in both conditions. A propensity toward M1 macrophage differentiation appears to be prominent in SjS while the Response to Virus was significant in SLE monocytes. Through the Reactome pathway analysis, DEGs in the IFN signaling and the cytokine signaling in immune system were most significantly enriched in both. Upregulation of NGF-induced transcription activity in SjS and the complement cascade activity in SLE were also noted. Multiple anti-inflammatory drugs, such as prostaglandin-endoperoxide synthase and angiotensin-I-converting- enzyme were associated with the DEGs in these conditions.

Conclusions: Taken together, our analysis indicates distinct inflammatory transcriptomic profiles shared in SjS and SLE monocytes. Comprehensive characterizations of the data from these conditions will ultimately allow differential diagnosis of each condition and identification of therapeutic targets.
KEYWORD
Sjogren¡¯s syndrome, Systemic lupus erythematosus, Autoimmun Diseases, Monocytes, RNA-seq, Gene-drug network
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