Blocking the CD39/CD73 pathway synergizes with anti-CD20 bispecific antibody in nodal B-cell lymphoma
Bispecific antibodies (BsAb) have emerged as a leading treatment modality in patients suffering from B-cell non-Hodgkin’s lymphoma (B-NHL). However, treatment failure is common and may potentially be attributed to pre-existing or emerging T-cell exhaustion. CD39 catalyzes—together with CD73—the hydr...
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| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
[30 January 2025]
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| In: |
Journal for ImmunoTherapy of Cancer
Year: 2025, Jahrgang: 13, Heft: 1, Pages: e009425-1-e009425-6 |
| ISSN: | 2051-1426 |
| DOI: | 10.1136/jitc-2024-009245 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1136/jitc-2024-009245 Verlag, kostenfrei, Volltext: https://jitc.bmj.com/content/13/1/e009245 
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| Verfasserangaben: | Clara Kolbe, Joseph Kauer, Berit Brinkmann, Peter Dreger, Wolfgang Huber, Carsten Müller-Tidow, Sascha Dietrich, Tobias Roider |
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| 520 | |a Bispecific antibodies (BsAb) have emerged as a leading treatment modality in patients suffering from B-cell non-Hodgkin’s lymphoma (B-NHL). However, treatment failure is common and may potentially be attributed to pre-existing or emerging T-cell exhaustion. CD39 catalyzes—together with CD73—the hydrolysis of immunogenic ATP into immunosuppressive adenosine and thus actively promotes an immunosuppressive micromilieu. Previously, we and others demonstrated that CD39+ T-cell subsets may have an adverse impact on the efficacy of T-cell-engaging immunotherapies. In this study, we applied an autologous ex vivo culture model of primary lymph node-derived T cells to investigate the potential of anti-CD39 or anti-CD73 blocking antibodies as T-cell enhancing combination partners of an anti-CD20 BsAb. Existing single-cell data of patient samples examined in this study were used to detect potential biomarkers predicting combination benefits. Combining anti-CD20 BsAb with anti-CD39 or anti-CD73 blocking antibodies induced synergistic effects on tumor cell killing, T-cell expansion and secretion of cytokines, including granzyme B, perforin, interleukin-10, interferon-γ, and tumor necrosis factor-α. We discovered that blockade of the CD39/CD73 pathway was particularly effective in patients with a high proportion of Programmed cell death protein 1 (PD-1)+ T-cell immunoglobulin and mucin-domain containing-3 (TIM3)+ exhausted T cells. Also, expression of CD39 in effector memory T cells indicated superior treatment benefit ex vivo. In summary, our study holds significant relevance as it introduces the combination of bispecific and anti-CD39 or anti-CD73 antibodies as a synergistic treatment approach in B-NHL, while also suggesting potential indicators to identify patients that might benefit from this treatment. | ||
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