{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,15]],"date-time":"2026-08-15T07:26:21Z","timestamp":1786778781688,"version":"build-2736575974"},"reference-count":71,"publisher":"Wiley","issue":"15","license":[{"start":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T00:00:00Z","timestamp":1786060800000},"content-version":"vor","delay-in-days":6,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,8,1]],"date-time":"2026-08-01T00:00:00Z","timestamp":1785542400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Cellular Molecular Medi"],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Primary Sj\u00f6gren's syndrome (pSS) is a chronic autoimmune disorder. Dysregulated interferon\u2010gamma (IFN\u2010\u03b3) signalling is implicated in pSS pathogenesis, yet the underlying mechanisms remain elusive. This study aimed to identify key IFN\u2010\u03b3\u2010associated diagnostic genes and delineate their roles in immune dysregulation using peripheral blood transcriptomic and single\u2010cell RNA sequencing (scRNA\u2010seq) data. Publicly available Gene Expression Omnibus (GEO) datasets were used, and the bioinformatics findings were further supported by reverse transcription\u2010quantitative PCR (RT\u2010qPCR) validation. Peripheral blood transcriptomic data from training and validation cohorts were analysed, and key genes were screened using machine learning algorithms, receiver operating characteristic (ROC) curve analysis, and differential expression analysis. A diagnostic model and nomogram were subsequently constructed. Immune infiltration, pathway enrichment, and gene regulatory networks were also investigated, while scRNA\u2010seq analysis was performed to characterize cellular heterogeneity, pseudotime trajectories, and cell\u2013cell communication. Four key genes, HERC6, IL15, CD58 and PTGS2, were identified, and the resulting diagnostic model and nomogram demonstrated high diagnostic accuracy. Immune profiling revealed marked dysregulation of the immune microenvironment in pSS, accompanied by extensive alterations in metabolic and signalling pathways. Pathway enrichment analysis further demonstrated both distinct and shared functional roles of the four key genes. Single\u2010cell analysis suggested that macrophages may act as central regulators in pSS pathogenesis, as evidenced by altered pseudotime trajectories, enrichment in early differentiation states, and intensified cell\u2013cell communication networks. RT\u2010qPCR further confirmed the significant upregulation of HERC6, IL15, and PTGS2 in patients with pSS. Collectively, this study established an IFN\u2010\u03b3\u2010associated diagnostic model for pSS and implicated macrophages as potential key contributors to immune dysregulation through altered differentiation, enhanced intercellular communication, and IFN\u2010\u03b3\u2010associated gene expression. These findings provide new insights into the pathogenesis of pSS and identify potential diagnostic biomarkers and therapeutic targets.<\/jats:p>","DOI":"10.1111\/jcmm.71313","type":"journal-article","created":{"date-parts":[[2026,8,8]],"date-time":"2026-08-08T04:00:34Z","timestamp":1786161634000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Single\u2010Cell\n                    <scp>RNA<\/scp>\n                    Sequencing Revealed the Role of Interferon\u2010Gamma Related Genes in Primary Sj\u00f6gren's Syndrome"],"prefix":"10.1111","volume":"30","author":[{"given":"Lei","family":"Shi","sequence":"first","affiliation":[{"name":"Department of Rheumatology and Immunology The Second Hospital of Shanxi Medical University  Taiyuan 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