ArticleThe Journal of pathology2025
C1GALT1 expression predicts poor survival in osteosarcoma and is crucial for ABCC1 transporter-mediated doxorubicin resistance.
Article in The Journal of pathology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- O-linked glycan-dependent gating of TPC2 controls lysosomal excitability and organelle remodeling.Nature communications · 2026Article
- WDR3 undergoes phase separation to mediate the therapeutic mechanism of Nilotinib against osteosarcoma.Journal of experimental & clinical cancer research : CR · 2025Article
- Cancer-associated fibroblasts in osteosarcoma: key players in immune escape and targeted therapy.Frontiers in immunology · 2025Review
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Authors and funding
12 authors.
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Abstract
Osteosarcoma is an aggressive bone malignancy with a high propensity for drug resistance and metastasis, leading to poor clinical outcomes. This study investigates the role of core 1 β1,3-galactosyltransferase 1 (C1GALT1) in osteosarcoma, focusing on its implications in chemoresistance. Our findings reveal that high expression of C1GALT1 is associated with advanced stages, adverse overall survival, and increased recurrence rates. Elevated levels of C1GALT1 were observed in doxorubicin-selected osteosarcoma cells, where its suppression significantly promoted doxorubicin-induced apoptosis and reduced drug efflux. Pharmacological inhibition of C1GALT1 using itraconazole replicated these effects, suggesting a potential therapeutic strategy to overcome chemoresistance. Additionally, we identified the involvement of the ATP-binding cassette (ABC) transporter ABCC1 in the drug-resistance phenotype mediated by C1GALT1. C1GALT1-mediated O-glycan changes were found to influence the cell-surface targeting and lysosomal degradation of ABCC1, thereby modulating its efflux capacity. In vitro and in vivo studies confirmed that C1GALT1 impacts ABCC1 expression and function, further supporting its role in osteosarcoma chemoresistance. These results highlight the clinical relevance of C1GALT1 as a biomarker for prognosis and a potential therapeutic target for osteosarcoma. © 2025 The Author(s). The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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