ArticleChemical biology & drug design2026
Multi-Omics Integration Reveals That SN-011 Targets JUNB to Upregulate ADGRE5 and Restore Vascular Endothelial Cell Communication in Ischemic Stroke.
Article in Chemical biology & drug design, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Ischemic stroke (IS) is a cerebrovascular disease with high mortality and disability rates, currently lacking effective therapeutic targets. The STING inhibitor SN-011 shows potential in IS treatment, but its mechanism of action remains unclear. This study aims to explore the key molecular mechanisms of SN-011 in treating IS through bioinformatics approaches. IS transcriptome datasets were analyzed to identify differentially expressed genes. Mendelian randomization using brain eQTL and IS-GWAS data identified genes with causal relationships to IS. Single-cell transcriptome, pseudo-time trajectory, intercellular communication, and transcription factor regulatory network analyzes were performed. Molecular docking and DARTS-WB assay validated SN-011 binding to transcription factors. Transcriptomic analysis identified 77 intersecting genes. Mendelian randomization revealed ADGRE5 as a protective gene for IS (OR < 1), significantly downregulated in venous endothelial cells (vECs) during disease progression. Cell communication analysis showed ADGRE5-high vECs interact with immune, glial, and stromal cells via LAMININ (Lamb2-CD44, Lamb2-Itga6+Itgb1, Lamb2-Dag1 pair) and JAM signaling pathways. Transcription factor analysis identified JUNB as a negative regulator of ADGRE5. Molecular docking (-6.8 kcal/mol) combined with an in vitro DARTS-WB assay confirmed the interaction between SN-011 and JUNB. In OGD-induced endothelial cell injury models, SN-011 suppressed JUNB expression, restored ADGRE5 expression inhibited by JUNB overexpression, reversed the downregulation of LAMB2 and CD44, and reduced the expression of the pro-inflammatory cytokines IL-6 and IL-1β. Notably, blockade of LAMB2 largely abolished these protective effects, indicating that the anti-inflammatory and endothelial-protective activities of SN-011 are mediated, at least in part, through restoration of the LAMB2-CD44 signaling axis. ADGRE5 downregulation in vECs may impair vascular repair by disrupting LAMININ-mediated intercellular communication. SN-011 may exert neuroprotective effects by targeting JUNB to upregulate ADGRE5 expression and restore the vEC-centered cellular communication network, providing a theoretical basis for SN-011 as a potential IS therapeutic.
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