Backgrounds: The association between chromatin accessibility in CD4 T cells and Immunoglobulin A nephropathy (IgAN) remains unclear.
Methods: We performed the assay for transposase accessible chromatin with sequencing (ATAC-seq) and RNA sequencing (RNA-seq) on CD4 T cells. ATAC-seq and RNA-seq were conducted to identify differentially accessible regions and differentially expressed genes (DEGs), respectively (P < 0.05, |log2 Fold Change| >1). QRT-PCR was utilized to validate target gene expression.
Results: We identified 100,865 differentially accessible regions, of which 7225 exhibited higher accessibility in IgAN. Functional analysis revealed that these regions are enriched in T lymphocyte activation and immune pathways. ELF3, MEIS1, and NFYC were identified as key TFs associated with IgAN. QRT-PCR indicated a significant upregulation of hub genes including MEIS1 in IgAN.
Conclusion: We identified key TFs and genes by integrating ATAC-seq and RNA-seq, which provide novel therapeutic targets for IgAN and insights into its pathogenesis from an epigenetic perspective.
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