Potent but transient immunosuppression of T-cells is a general feature of CD71+ erythroid cells
CD71 + erythroid cells (CECs) have been recently recognized in both neonates and cancer patients as potent immunoregulatory cells. Here, we show that in mice early-stage CECs expand in anemia, have high levels of arginase 2 (ARG2) and reactive oxygen species (ROS). In the spleens of anemic mice, CEC...
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Veröffentlicht in: | Communications biology 2021-12, Vol.4 (1), p.1384-1384, Article 1384 |
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Sprache: | eng |
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Zusammenfassung: | CD71
+
erythroid cells (CECs) have been recently recognized in both neonates and cancer patients as potent immunoregulatory cells. Here, we show that in mice early-stage CECs expand in anemia, have high levels of arginase 2 (ARG2) and reactive oxygen species (ROS). In the spleens of anemic mice, CECs expansion-induced
L
-arginine depletion suppresses T-cell responses. In humans with anemia, CECs expand and express ARG1 and ARG2 that suppress T-cells IFN-γ production. Moreover, bone marrow CECs from healthy human donors suppress T-cells proliferation. CECs differentiated from peripheral blood mononuclear cells potently suppress T-cell activation, proliferation, and IFN-γ production in an ARG- and ROS-dependent manner. These effects are the most prominent for early-stage CECs (CD71
high
CD235a
dim
cells). The suppressive properties disappear during erythroid differentiation as more differentiated CECs and mature erythrocytes lack significant immunoregulatory properties. Our studies provide a novel insight into the role of CECs in the immune response regulation.
Grzywa et al. show that early CD71+ erythroid cells expand in the spleen of anemic mice and in humans and suppress T-cell activation. These results provide insight into the role of CECs in the immune response regulation. |
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ISSN: | 2399-3642 2399-3642 |
DOI: | 10.1038/s42003-021-02914-4 |