TY  - JOUR
A1  - Krakow, Sören
A1  - Crescimone, Marie L.
A1  - Bartels, Charlotte
A1  - Wiegering, Verena
A1  - Eyrich, Matthias
A1  - Schlegel, Paul G.
A1  - Wölfl, Matthias
T1  - Re-expression of CD14 in response to a combined IL-10/TLR stimulus defines monocyte-derived cells with an immunoregulatory phenotype
JF  - Frontiers in Immunology
N2  - Interleukin 10 is a central regulator of the antigen-presenting function of myeloid cells. It exerts immunomodulatory effects in vivo and induces a regulatory phenotype in monocyte-derived cells in vitro. We analyzed phenotype and function of monocytic cells in vitro in relation to the cytokine milieu and the timing of TLR-based activation. In GM-CSF/IL-4 cultured human monocytic cells, we identified two, mutually exclusive cell populations arising from undifferentiated cells: CD83\(^+\) fully activated dendritic cells and CD14\(^+\) macrophage like cells. Re-expression of CD14 occurs primarily after a sequential trigger with a TLR signal following IL-10 preincubation. This cell population with re-expressed CD14 greatly differs in phenotype and function from the CD83+ cells. Detailed analysis of individual subpopulations reveals that exogenous IL-10 is critical for inducing the shift toward the CD14\(^+\) population, but does not affect individual changes in marker expression or cell function in most cases. Thus, plasticity of CD14 expression, defining a subset of immunoregulatory cells, is highly relevant for the composition of cellular products (such as DC vaccines) as it affects the function of the total product.
KW  - regulatory dendritic cells
KW  - MDSC
KW  - monocyte-derived DC
KW  - IL-10
KW  - macrophages
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-201537
VL  - 10
IS  - 1484
ER  -