Induction of interleukin-10 expression through Fcalpha receptor in human monocytes and monocyte-derived dendritic cells: role of p38 MAPKinase.
(2010) Immunology and Cell Biology — Vol. 88, n° 4, p. 486-493 (2010)
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- As previously reported by others for immunoglobulin (Ig)G, we observed that IgA can induce interleukin (IL)-10 expression in human monocytes. In this study, we explored the molecular mechanisms of IL-10 induction by IgA in monocytes and monocyte-derived dendritic cells (MD-DCs). Monomeric IgA induced IL-10 production in monocytes and this production was further increased upon IgA cross-linking. Similar IL-10 responses were observed in monocytes and autologous MD-DCs, and were inhibited (by approximately 77%) by preincubation with a blocking mAb to FcalphaRI. IL-10 induction by IgA correlated with activation of MAPKinases ERK1/2, p38 and JNK, whereas only p38-inhibitor SB-203580 inhibited IL-10 induction. Upon IgA stimulation, AP-1, NFkappaB and Sp1 transcription factors were activated and inhibitors of NFkappaB and of Sp1 suppressed IgA-driven transcriptional activation of IL-10. In addition, p38 MAPK activation appeared that it was required to control nuclear translocation of NFkappaB and Sp1 upon IgA stimulation. Therefore, in human monocytes and MD-DCs the mechanisms of IL-10 induction by IgA involve p38 MAPK-dependent recruitment of both NFkappaB and Sp1.Immunology and Cell Biology advance online publication, 19 January 2010; doi:10.1038/icb.2009.120.
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Pilette, C., Detry, B., Guisset, A., Gabriels, J., & Sibille, Y. (2010). Induction of interleukin-10 expression through Fcalpha receptor in human monocytes and monocyte-derived dendritic cells: role of p38 MAPKinase. Immunology and Cell Biology, 88(4), 486-493. https://doi.org/10.1038/icb.2009.120 (Original work published 2010)