Related Experiment Video
Updated: Sep 24, 2026
Expansion and Adipogenesis Induction of Adipocyte Progenitors from Perivascular Adipose Tissue Isolated by Magnetic Activated Cell Sorting
Published on: June 30, 2017
Cxcl9 as a Marker of Adipose Tissue Changes Caused by Bariatric Surgery and Psoriasis
1Department of General Surgery, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, 410000, People's Republic of China.
Background:
Bariatric surgery has been shown to improve psoriasis, but the underlying molecular mechanisms remain unclear. This study aimed to investigate shared molecular mechanisms between bariatric surgery-induced adipose changes and psoriasis using bioinformatics approaches.
Methods:
Transcriptomic data from adipose tissue before and after bariatric surgery and from psoriatic lesions were obtained from the GEO database. Common differentially expressed genes (co-DEGs) were identified and subjected to GO/KEGG enrichment analysis, protein-protein interaction network construction, and machine learning-based hub gene selection. Diagnostic performance and immune infiltration characteristics were evaluated.
Results:
Co-DEGs were significantly enriched in the IL-17 signaling pathway, defense response to bacterium, response to lipopolysaccharide, cytolysis, and collagen-containing extracellular matrix. CXCL9 was identified as a key hub gene via multiple machine learning algorithms, showing good diagnostic performance in external validation (AUC > 0.85). Immune infiltration analysis revealed that CXCL9 expression was positively correlated with M1 macrophage and CD8⁺ T cell abundance, and negatively correlated with M2 macrophages.
Conclusion:
CXCL9, through its involvement in the IL-17 signaling pathway and lipopolysaccharide response, may serve as a critical bridge linking adipose tissue inflammation and psoriatic skin immunity, providing a novel molecular target for the improvement of psoriasis following bariatric surgery.
