ArticleJournal of advanced research2025
Dialog between mantle cell lymphoma cells and lymphoma-associated macrophages underlies ibrutinib resistance.
Article in Journal of advanced research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Macrophage Trogocytosis of Tumor Cells Drives the Immunosuppression of Tumor Microenvironment.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Mechanisms of resistance to BTK inhibitors in B cell malignancies and emerging targeted strategies.Molecular therapy. Oncology · 2026Review
- Bruton Tyrosine Kinase Inhibitors in Mantle Cell Lymphoma: What Are the Current Options?European journal of haematology · 2025Review
- An overview of advanced nanocarrier systems for Ibrutinib delivery: overcoming pharmacokinetic barriers and enabling targeted cancer therapy.International journal of pharmaceutics: X · 2025Review
- Exploratory research on therapeutic agents combined with early diagnostic biomarkers for colorectal cancer.Frontiers in pharmacology · 2025Article
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Authors and funding
11 authors.
Funding
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Abstract
introductionPatients with mantle cell lymphoma (MCL) frequently develop resistance to ibrutinib. Lymphoma-associated macrophages (LAMs) may play a causal role in this resistance but remain underexplored in current literature.
objectivesTo elucidate the role of LAMs in mediating ibrutinib resistance in MCL.
methodsWe investigated macrophage polarization through multiparameter flow cytometry (MPFC) using antibodies against CD206 and CD86 in blood and tissue samples from patients with MCL, both resistant and sensitive to ibrutinib. Subsequently, we developed an in vitro co-culture model utilizing MCL cell lines to identify cytokines associated with ibrutinib resistance and macrophage M2 polarization. The mechanisms underlying resistance were examined using MPFC, RNA sequencing, and Western blot analysis. Additionally, we assessed whether SB225002, a CXCR2 inhibitor, could reverse ibrutinib resistance through CCK-8 and caspase-3 assays, as well as in a mouse xenograft model involving an ibrutinib-resistant MCL cell line.
resultsIn patients exhibiting ibrutinib resistance, the ratio of M2 to M1 LAMs was significantly higher compared to sensitive patients. In co-cultures of LAMs and MCL cells, the percentage of M2 macrophages, the IC50 value for ibrutinib, and the concentrations of IL-8 and CXCL5 were significantly elevated. Mechanistically, CXCL5 secreted by LAMs interacted with the CXCR2 on MCL cells, leading to the activation of the Akt, p38, and STAT3 signaling pathways in the presence of ibrutinib; this activity was diminished upon blockade of the CXCL5/CXCR2 axis. The combination of SB225002 and ibrutinib significantly enhanced MCL cell apoptosis, suppressed lymphoma growth in the xenograft model, and reprogrammed macrophage phenotype compared to treatment with ibrutinib alone.
conclusionOur data indicate that M2-polarized LAMs are associated with ibrutinib resistance in a model of MCL, and that a CXCR2 inhibitor can reverse this resistance. These findings suggest a potential new therapeutic strategy.
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