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Comparative Study of the Immunoregulatory Capacity of In Vitro Generated Tolerogenic Dendritic Cells, Suppressor Macrophages, and Myeloid-Derived Suppressor Cells
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Edité par CCSD ; Lippincott, Williams & Wilkins -
International audience. Background. Regulatory myeloid cell (RMC) therapy is a promising strategy for the treatment of immunological disorders such as autoimmune disease and allograft transplant rejection. Various RMC subsets can be derived from total bone marrow using different protocols, but their phenotypes often overlap, raising questions about whether they are truly distinct.Methods. In this study, we directly compared the phenotype and function of 3 types of RMCs, tolerogenic dendritic cells, suppressor macrophages, and myeloid-derived suppressor cells, generated in vitro from the same mouse strain in a single laboratory.Results. We show that the 3 RMC subsets tested in this study share some phenotypic markers, suppress T cell proliferation in vitro and were all able to prolong allograft survival in a model of skin transplantation. However, our results highlight distinct mechanisms of action that are specific to each cell population.Conclusions. This study shows for the first time a side-by-side comparison of 3 types of RMCs using the same phenotypic and functional assays, thus providing a robust analysis of their similarities and differences.
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