Comparative Analysis of CXCR5 Circulating DNA Methylation Levels in Autoimmune Rheumatic Diseases

作者：Yiming Shi, Yingying Qin, Yunshen Li, Ping Jiang, Kai Wei, Jianan Zhao, Yu Shan, Yixin Zheng, Fuyu Zhao, Mi Zhou, Li Li, Yu Shen, Xinliang Lv, Yuejuan Zheng, Shicheng Guo, Qin Ding, Cen Chang, Dongyi He · 发表于：Immunity Inflammation and Disease · 年份：2025 · DOI：10.1002/iid3.70128 · 被引用次数：4 · 研究领域：Spondyloarthritis Studies and Treatments、Rheumatoid Arthritis Research and Therapies、Systemic Sclerosis and Related Diseases

OBJECTIVE: To assess CXC chemokine receptor 5 (CXCR5) circulating DNA methylation differences in autoimmune rheumatic diseases and their relation with clinical features. METHODS: Targeted methylation sequencing was performed using peripheral blood from 164 rheumatoid arthritis (RA), 30 systemic lupus erythematosus (SLE), 30 ankylosing spondylitis (AS), 30 psoriatic arthritis (PsA), 24 Sjögren's syndrome (SS) patients, and 30 healthy controls (HC). RESULTS: Significant differences in CXCR5 cg19599951 methylation were found between RA and HC, as well as AS and SLE. RA patients exhibited higher methylation than HC and AS (p < 0.01) but lower than SLE (p < 0.05). SLE patients showed higher methylation compared to HC, AS, and PsA (p < 0.001, 0.01, and 0.05, respectively). No significant differences were found in patients with SS compared to other autoimmune diseases and HC. Methylation at cg19599951_103 (r = 0.17, p < 0.05) and cg19599951_209 (r = 0.22, p < 0.01), along with the CC haplotype (r = 0.21, p < 0.01), showed significant positive correlations with erythrocyte sedimentation rate (ESR), while the CT (r = -0.27, p < 0.001) and TT haplotypes (r = -0.19, p < 0.05) were negatively correlated. For C-reactive protein (CRP), methylation at cg19599951_103 (r = 0.29, p < 0.001) and cg19599951_209 (r = 0.33, p < 0.0001), and the CC haplotype (r = 0.34, p < 0.0001) was positively correlated, whereas the CT (r = -0.36, p < 0.0001) and TT (r = -0.30, p < 0.0001) haplotypes were negati...