Frontiers in Immunology
Multi-omics analysis identifies fibroblast IGFBP5 as a key target of anti-TNFα therapy in ulcerative colitis
Background Resistance to anti-TNFα therapy (e.g., infliximab) in ulcerative colitis (UC) remains a significant clinical challenge, with the underlying cellular and spatial mechanisms poorly understood. Methods We integrated bulk transcriptomics, single-cell RNA sequencing (scRNA-seq), and spatial transcriptomics (ST) from clinical cohorts to systematically map the cellular landscape and identify key determinants of treatment response, followed by validation in independent clinical cohorts and in vitro functional ex …