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| Home > In process > Bone marrow dendritic cells support the survival of chronic lymphocytic leukemia cells in a CD84 dependent manner. |
| Home > In process > Bone marrow dendritic cells support the survival of chronic lymphocytic leukemia cells in a CD84 dependent manner. |
| Journal Article | DKFZ-2025-02351 |
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2020
Springer Nature
London
Abstract: Chronic lymphocytic leukemia (CLL) is a malignancy of mature B lymphocytes. The microenvironment of the CLL cells is a vital element in the regulation of the survival of these malignant cells. CLL cell longevity is dependent on external signals, originating from cells in their microenvironment including secreted and surface-bound factors. Dendritic cells (DCs) play an important part in tumor microenvironment, but their role in the CLL bone marrow (BM) niche has not been studied. We show here that CLL cells induce accumulation of bone marrow dendritic cells (BMDCs). Depletion of this population attenuates disease expansion. Our results show that the support of the microenvironment is partly dependent on CD84, a cell surface molecule belonging to the Signaling Lymphocyte Activating Molecule (SLAM) family of immunoreceptors. Our results suggest a novel therapeutic strategy whereby eliminating BMDCs or blocking the CD84 expressed on these cells may reduce the tumor load.
Keyword(s): Animals (MeSH) ; Apoptosis (MeSH) ; Bone Marrow: immunology (MeSH) ; Bone Marrow: metabolism (MeSH) ; Bone Marrow: pathology (MeSH) ; Cell Proliferation (MeSH) ; Dendritic Cells: immunology (MeSH) ; Dendritic Cells: metabolism (MeSH) ; Dendritic Cells: pathology (MeSH) ; Female (MeSH) ; Humans (MeSH) ; Leukemia, Lymphocytic, Chronic, B-Cell: immunology (MeSH) ; Leukemia, Lymphocytic, Chronic, B-Cell: metabolism (MeSH) ; Leukemia, Lymphocytic, Chronic, B-Cell: pathology (MeSH) ; Mice (MeSH) ; Mice, Transgenic (MeSH) ; Prognosis (MeSH) ; Signaling Lymphocytic Activation Molecule Family: metabolism (MeSH) ; Tumor Cells, Cultured (MeSH) ; Tumor Microenvironment: immunology (MeSH) ; CD84 protein, human ; Signaling Lymphocytic Activation Molecule Family
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