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Nylund P, Nikkarinen A, Ek S, Glimelius I. Empowering macrophages: the cancer fighters within the tumour microenvironment in mantle cell lymphoma. Front Immunol 2024; 15:1373269. [PMID: 38566987 PMCID: PMC10985169 DOI: 10.3389/fimmu.2024.1373269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 02/29/2024] [Indexed: 04/04/2024] Open
Abstract
In Mantle Cell Lymphoma (MCL), the role of macrophages within the tumour microenvironment (TME) has recently gained attention due to their impact on prognosis and response to therapy. Despite their low absolute number in MCL tumour tissue, recent findings reveal an association between the levels of macrophages and prognosis, consistent with trends observed in other lymphoma subtypes. M2-like macrophages, identified by markers such as CD163, contribute to angiogenesis and suppression of the immune response. Clinical trials with MCL patients treated with chemoimmunotherapy and targeted treatments underscore the adverse impact of high levels of M2-like macrophages. Immunomodulatory drugs like lenalidomide reduce the levels of MCL-associated CD163+ macrophages and enhance macrophage phagocytic activity. Similarly, clinical approaches targeting the CD47 "don't eat me" signalling, in combination with the anti-CD20-antibody rituximab, demonstrate increased macrophage activity and phagocytosis of MCL tumour cells. Cell-based therapies such as chimeric antigen receptor (CAR) T-cell have shown promise but various challenges persist, leading to a potential interest in CAR-macrophages (CAR-M). When macrophages are recruited to the TME, they offer advantages including phagocytic function and responsiveness to microenvironment alterations, suggesting their potential as a manipulable and inducible alternative when CAR T-cell therapies fails in the complex landscape of MCL treatment.
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Affiliation(s)
- Patrick Nylund
- Department of Immunology, Genetics and Pathology, Cancer Precision Medicine Unit, Uppsala University, Uppsala, Sweden
| | - Anna Nikkarinen
- Department of Immunology, Genetics and Pathology, Cancer Precision Medicine Unit, Uppsala University, Uppsala, Sweden
| | - Sara Ek
- Department of Immunotechnology, Lund University, Lund, Sweden
| | - Ingrid Glimelius
- Department of Immunology, Genetics and Pathology, Cancer Precision Medicine Unit, Uppsala University, Uppsala, Sweden
- Division of Clinical Epidemiology, Department of Medicine, Karolinska Institute, Stockholm, Sweden
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Qualls D, Kumar A, Epstein-Peterson Z. Targeting the immune microenvironment in mantle cell lymphoma: implications for current and emerging therapies. Leuk Lymphoma 2022; 63:2515-2527. [PMID: 35704674 PMCID: PMC9741766 DOI: 10.1080/10428194.2022.2086244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/21/2022] [Accepted: 05/27/2022] [Indexed: 12/14/2022]
Abstract
Mantle cell lymphoma (MCL) is a morphologically and phenotypically heterogeneous subtype of non-Hodgkin lymphoma, and has historically been associated with poor outcomes. However, recent advances in our understanding of this disease have yielded new targeted and immune-based therapies with promising activity. Immune-based therapies such as monoclonal antibodies, immunomodulators, and CAR T cells have significantly improved outcomes and are now standard of care in MCL. In this review, we describe our current understanding of the immune microenvironment of MCL, discuss current immunotherapeutic approaches, and highlight promising novel immune-based therapies and combination therapies that may further improve outcomes for patients with MCL.
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Affiliation(s)
- David Qualls
- Lymphoma Service, Division of Hematologic Malignancies, Department of Medicine, Memorial Sloan Kettering Cancer Center. New York, NY, USA
| | - Anita Kumar
- Lymphoma Service, Division of Hematologic Malignancies, Department of Medicine, Memorial Sloan Kettering Cancer Center. New York, NY, USA
| | - Zachary Epstein-Peterson
- Lymphoma Service, Division of Hematologic Malignancies, Department of Medicine, Memorial Sloan Kettering Cancer Center. New York, NY, USA
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Kuroda Y, Koyama D, Kikuchi J, Mori S, Ichinohe T, Furukawa Y. Autophagic degradation of NOXA underlies stromal cell-mediated resistance to proteasome inhibitors in mantle cell lymphoma. Leuk Res 2021; 111:106672. [PMID: 34332177 DOI: 10.1016/j.leukres.2021.106672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 07/19/2021] [Accepted: 07/21/2021] [Indexed: 11/30/2022]
Abstract
Mantle cell lymphoma (MCL) is usually resistant to the current standard-of-care regimens and also to novel agents such as the proteasome inhibitor bortezomib. A better prognosis of leukemic variants of MCL suggests that MCL cells acquire drug resistance in nodal and/or bone marrow microenvironments via interaction with supporting cells. Bortezomib exerts cytotoxic action in MCL cells via stabilization of the pro-apoptotic BCL-2 family protein NOXA. Here we show that autophagic degradation of NOXA is a mechanism of bortezomib resistance in MCL cells in a tumor microenvironment. First, we demonstrated that interaction with bone marrow-derived or nodal stromal cells conferred bortezomib resistance to MCL cells in vitro and in a murine model. Co-culture of MCL cells with stromal cells enhanced bortezomib-induced ubiquitination and subsequent binding of NOXA to the p62 adaptor, which escorted NOXA to the lysosome for autophagic degradation. Finally, we found that not only direct contact with stromal cells but also stroma-derived humoral factors, especially interleukin-6, promoted selective autophagy and NOXA degradation in MCL cells. Targeting protective autophagy, for example, using the lysosome inhibitor chloroquine, might increase the efficacy of bortezomib-containing regimens in MCL.
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Affiliation(s)
- Yoshiaki Kuroda
- Division of Stem Cell Regulation, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan; Department of Hematology, National Hospital Organization Hiroshimanishi Medical Center, 4-1-1 Kuba, Otake, Hiroshima, 739-0696, Japan
| | - Daisuke Koyama
- Division of Stem Cell Regulation, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Jiro Kikuchi
- Division of Stem Cell Regulation, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Shigehisa Mori
- Medical Education Center, Saitama Medical University, 38 Morohongo, Saitama, 350-0495, Japan
| | - Tatsuo Ichinohe
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine (RIRBM), Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Yusuke Furukawa
- Division of Stem Cell Regulation, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
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