ArticleJournal of translational medicine2026
Single-cell and spatial transcriptomics reveal that THBS1 induces radiation resistance in TNBC through the interaction between myCAF and TOPBP1⁺ tumor cells.
Article in Journal of translational medicine, 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
backgroundRadiation resistance remains a clinical challenge in the treatment of triple-negative breast cancer (TNBC) and its mechanisms are not yet fully understood.
methodsWe integrated single-cell RNA sequencing, spatial transcriptomics, and prognostic data to perform analyses such as intercellular communication, pseudo-temporal trajectories, and GSEA and validated the results using experiments including qPCR, single-cell sequencing and flow cytometry.
resultsThis study identified a unique subpopulation of epithelial cells, designated TOPBP1⁺ E.T. cells, which retain normal epithelial transcriptional profiles and are associated with poor patient prognosis. myCAF communicates with this cell cluster via the THBS1 signaling pathway, activating the NOTCH signaling pathway to promote resistance to radiotherapy.
conclusionsTHBS1 plays a pivotal role in mediating radioresistance in triple-negative breast cancer, positioning it as a promising therapeutic target.
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