What question did this study set out to answer?

To determine the capacity of macrophages, myeloid dendritic cells, and plasmacytoid dendritic cells to produce and respond to IL-10 under TLR-dependent and TLR-independent activation.

December 1, 2006The Journal of ImmunologyOpen Access

Macrophages and Myeloid Dendritic Cells, but Not Plasmacytoid Dendritic Cells, Produce IL-10 in Response to MyD88- and TRIF-Dependent TLR Signals, and TLR-Independent Signals

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Authors

ABAndré BoonstraErasmus MC RRRicardo RajsbaumRutgers, The State University of New Jersey MHMary HolmanNational Institute for Health and Care Excellence

Discussion

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Implication

Experimental study demonstrates differential IL-10 secretion across mouse myeloid and plasmacytoid dendritic cells, indicating distinct autocrine versus trans-regulatory immune control mechanisms.

Key Points

To determine the capacity of macrophages, myeloid dendritic cells, and plasmacytoid dendritic cells to produce and respond to IL-10 under TLR-dependent and TLR-independent activation.
Stimulated mouse macrophages, bone marrow-derived myeloid dendritic cells, splenic dendritic cells, and plasmacytoid dendritic cells using MyD88-dependent TLR ligands (TLR4, 7, 9), TRIF-dependent TLR ligands (TLR3, 4), or CD40 ligation.
Measured production of IL-10, IL-12p70, TNF, and IFN-alpha in the presence or absence of endogenous and exogenous IL-10.
Macrophages and myeloid dendritic cells secreted high and intermediate levels of IL-10, respectively, via MyD88-, TRIF-, and CD40-dependent pathways, whereas plasmacytoid dendritic cells produced undetectable levels.
Endogenous IL-10 suppressed CpG-induced IL-12p70 synthesis in macrophages, myeloid dendritic cells, and splenic CD8alpha(-) and CD8alpha(+) dendritic cells.
Exogenous IL-10 suppressed production of IL-12, TNF, and IFN-alpha in plasmacytoid dendritic cells, establishing trans-regulation rather than autocrine inhibition.

Cite This Study

Boonstra et al. (2006) studied this question.

synapsesocial.com/papers/6a6e16e05d37378ac1dbcc2e https://doi.org/10.4049/jimmunol.177.11.7551

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Implication

Experimental study demonstrates differential IL-10 secretion across mouse myeloid and plasmacytoid dendritic cells, indicating distinct autocrine versus trans-regulatory immune control mechanisms.

Macrophages and Myeloid Dendritic Cells, but Not Plasmacytoid Dendritic Cells, Produce IL-10 in Response to MyD88- and TRIF-Dependent TLR Signals, and TLR-Independent Signals

Discussion

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Implication

Key Points

Cite This Study

Macrophages and Myeloid Dendritic Cells, but Not Plasmacytoid Dendritic Cells, Produce IL-10 in Response to MyD88- and TRIF-Dependent TLR Signals, and TLR-Independent Signals

Discussion

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Implication

Key Points

Cite This Study

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