{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,3]],"date-time":"2026-10-03T05:39:31Z","timestamp":1791005971563,"version":"4.1.0"},"reference-count":43,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2023,1,18]],"date-time":"2023-01-18T00:00:00Z","timestamp":1674000000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Immunol."],"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Ulcerative colitis (UC) is a chronic autoimmune-related disease that causes inflammation of the intestine. Ankylosing spondylitis (AS) is a common extraintestinal complication of UC involving the sacroiliac joint. However, the pathogenesis of AS secondary to UC has not been studied. This study aimed to investigate the shared pathways and potential common biomarkers of UC and AS.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Microarray data downloaded from the Gene Expression Omnibus (GEO) database were used to screen differentially expressed genes (DEGs) in the UC and AS datasets. Weighted gene co-expression network analysis (WGCNA) was performed to identify co-expression modules related to UC and AS. Shared genes were then further analyzed for functional pathway enrichment. Next, the optimal common biomarker was selected using SVM-RFF and further validated using two independent GEO datasets. Finally, immune infiltration analysis was used to investigate the correlation of immune cell infiltration with common biomarkers in UC and AS.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 4428 and 2438 DEGs in UC and AS, respectively, were screened. Four modules were identified as significant for UC and AS using WGCNA. A total of 25 genes overlapped with the strongest positive and negative modules of UC and AS. KEGG analysis showed these genes may be involved in the mitogen-activated protein kinase (MAPK) signaling pathway. GO analysis indicated that these genes were significantly enriched for RNA localization. <jats:italic>PAN3<\/jats:italic> was selected as the optimal common biomarker for UC and AS. Immune infiltration analysis showed that the expression of <jats:italic>PAN3<\/jats:italic> was correlated with changes in immune cells.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This study first explored the common pathways and genetic diagnostic markers involved in UC and AS using bioinformatic analysis. Results suggest that the MAPK signaling pathway may be associated with both pathogeneses and that <jats:italic>PAN3<\/jats:italic> may be a potential diagnostic marker for patients with UC complicated by AS.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fimmu.2023.1089622","type":"journal-article","created":{"date-parts":[[2023,1,18]],"date-time":"2023-01-18T07:51:22Z","timestamp":1674028282000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":9,"title":["Exploration of the shared pathways and common biomarker PAN3 in ankylosing spondylitis and ulcerative colitis using integrated bioinformatics analysis"],"prefix":"10.3389","volume":"14","author":[{"given":"Minna","family":"Zhang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junyi","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Honggang","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Le","family":"He","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingyi","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaozhong","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaomin","family":"Zhong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2023,1,18]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(12)60150-0","article-title":"Ulcerative colitis","volume":"380","author":"Ordas","year":"2012","journal-title":"Lancet"},{"key":"B2","doi-asserted-by":"publisher","DOI":"10.1053\/j.gastro.2011.01.055","article-title":"Epidemiology and natural history of inflammatory bowel diseases","volume":"140","author":"Cosnes","year":"2011","journal-title":"Gastroenterology"},{"key":"B3","doi-asserted-by":"publisher","DOI":"10.1016\/j.mayocp.2019.01.018","article-title":"Ulcerative colitis","volume":"94","author":"Feuerstein","year":"2019","journal-title":"Mayo Clin Proc"},{"key":"B4","doi-asserted-by":"publisher","DOI":"10.1097\/MIB.0000000000000392","article-title":"Extraintestinal manifestations of inflammatory bowel disease","volume":"21","author":"Vavricka","year":"2015","journal-title":"Inflammation Bowel Dis"},{"key":"B5","doi-asserted-by":"publisher","DOI":"10.1053\/j.gastro.2021.07.042","article-title":"Extraintestinal manifestations of inflammatory bowel disease: Current concepts, treatment, and implications for disease management","volume":"161","author":"Rogler","year":"2021","journal-title":"Gastroenterology"},{"key":"B6","doi-asserted-by":"publisher","DOI":"10.1038\/nrrheum.2017.56","article-title":"Pathogenesis of ankylosing spondylitis - recent advances and future directions","volume":"13","author":"Ranganathan","year":"2017","journal-title":"Nat Rev Rheumatol"},{"key":"B7","doi-asserted-by":"publisher","DOI":"10.1016\/j.berh.2006.03.010","article-title":"Ankylosing spondylitis and bowel disease. 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