LncRNA-NFYB axis drives immune suppression to promote HCC progression by a positive feedback
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ABSTRACT: Metastases are the main cause of cancer mortality, but the mechanisms underlying aggressive progression remain poorly understood. Genome-wide characterization of chromatin accessibility reveals the opening of large numbers of distal regulatory elements across the genome during metastatic progression, which correlate with NFYB. Further, hepatocellular LINC01137 mitigates antitumour T cell responses by expanding MDSC to promote HCC metastasis via stabilizing NFYB to recruit SMYD3 to upregulate IL-1β, CXCL2 and CCL20. Mechanistically, LINC01137 recruits SMYD3 to increase the occupancy of H3K4me3 on promoters of IL-1β, CXCL2 and CCL20 by NFYB. Importantly, LINC01137 transcription is activated by NFYB/KAT2B complex in a feed-forward loop. Clinically, Concordant overexpression of LINC01137-NFYB and MDSC markers positively correlates with poorer survival. Notably, IL-1β inhibitor enhances the blockade efficacy of PD-L1 in LINC01137-overexpressing HCC. Our results delineate an immunosuppressive mechanism of LINC01137-NFYB signalling during HCC progression and supply a proof for the concept of engineering microenvironment in HCC immunotherapy.
ORGANISM(S): Homo sapiens
PROVIDER: GSE154509 | GEO | 2026/07/01
REPOSITORIES: GEO
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