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Cited by 351

The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.

Selective Suppression of Interleukin-12 Induction after Macrophage Receptor Ligation

Open access
Sutterwala, Fayyaz S., Noel, Gary J., Clynes, Raphael, Mosser, David M.·1997·The Journal of Experimental Medicine

Abstract

Interleukin (IL)-12 is a monocyte- and macrophage-derived cytokine that plays a crucial role in both the innate and the acquired immune response. In this study, we examined the effects that ligating specific macrophage receptors had on the induction of IL-12 by lipopolysaccharide (LPS). We report that ligation of the macrophage Fcγ, complement, or scavenger receptors inhibited the induction of IL-12 by LPS. Both mRNA synthesis and protein secretion were diminished to near-undetectable levels following receptor ligation. Suppression was specific to IL-12 since IL-10 and tumor necrosis factor-α (TNF-α) production were not inhibited by ligating macrophage receptors. The results of several different experimental approaches suggest that IL-12 downregulation was due to extracellular calcium influxes that resulted from receptor ligation. First, preventing extracellular calcium influxes, by performing the assays in EGTA, abrogated FcγR-mediated IL-12(p40) mRNA suppression. Second, exposure of macrophages to the calcium ionophores, ionomycin or A23187, mimicked receptor ligation and inhibited IL-12(p40) mRNA induction by LPS. Finally, bone marrow–derived macrophages from FcR γ chain–deficient mice, which fail to flux calcium after receptor ligation, failed to inhibit IL-12(p40) mRNA induction. These results indicate that the calcium influxes that occur as a result of receptor ligation are responsible for inhibiting the induction of IL-12 by LPS. Hence, the ligation of phagocytic receptors on macrophages can lead to a dramatic decrease in IL-12 induction. This downregulation may be a way of limiting proinflammatory responses of macrophages to extracellular pathogens, or suppressing the development of cell-mediated immunity to intracellular pathogens.

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Metadata

Authors
Sutterwala, F. S., Noel, G. J., Clynes, R., & Mosser, D. M.
Venue
The Journal of Experimental Medicine
Published
1997-06-02
Volume
185
Issue
11
Pages
1977-1985
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2101647368
Cited by
351
References
39
FWCI
7.64
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Selective Suppression of Interleukin-12 Induction after Macrophage Receptor Ligation. https://app.cochat.ai/papers/10.1084/jem.185.11.1977
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Sutterwala, F. S., Noel, G. J., Clynes, R., & Mosser, D. M. (1997). Selective Suppression of Interleukin-12 Induction after Macrophage Receptor Ligation. The Journal of Experimental Medicine. https://doi.org/10.1084/jem.185.11.1977

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