What question did this study set out to answer?

To determine how physical adherence and cytokine stimulation regulate interleukin-6 (IL-6) gene expression and protein secretion in human monocytes and monocytic cell lines.

June 1, 1989The Journal of Immunology

Regulation of the expression of IL-6 in human monocytes.

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Authors

SNSéverine NavarroThe University of Queensland NDNajet DebiliInserm JBJean‐François BernaudinInserm

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Implication

In vitro experimental study demonstrates adherence and cytokine-mediated regulation of IL-6 expression in human monocytes, highlighting key mechanisms in inflammatory signaling.

Key Points

To determine how physical adherence and cytokine stimulation regulate interleukin-6 (IL-6) gene expression and protein secretion in human monocytes and monocytic cell lines.
Assessed IL-6 mRNA and protein expression in peripheral blood mononuclear cells (PBMC) exposed to adherence and cytokines including CSF-1, IFN-gamma, IL-1 alpha, and GM-CSF using in situ hybridization.
Investigated kinetics of IL-6 induction by phorbol myristate acetate (PMA) and cellular responses to recombinant IL-6 in HL-60 and U937 monocytic cell lines.
Cellular adherence induced monocyte IL-6 mRNA within 2 hours and enhanced CSF-1-mediated IL-6 overinduction, whereas IFN-gamma, IL-1 alpha, and GM-CSF induced IL-6 mRNA without requiring adherence.
PMA stimulation induced rapid, transient IL-6 mRNA expression at 30 minutes in HL-60 cells compared to sustained expression persisting through 72 hours in U937 cells.
Treatment with recombinant IL-6 inhibited cell proliferation and increased HLA class I antigen expression in both HL-60 and U937 cells.

Cite This Study

Navarro et al. (1989) studied this question.

synapsesocial.com/papers/6a93c1940d47ea57beb85dbc https://doi.org/10.4049/jimmunol.142.12.4339

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Implication

In vitro experimental study demonstrates adherence and cytokine-mediated regulation of IL-6 expression in human monocytes, highlighting key mechanisms in inflammatory signaling.

Regulation of the expression of IL-6 in human monocytes.

Discussion

Member takes

Implication

Key Points

Cite This Study

Regulation of the expression of IL-6 in human monocytes.

Discussion

Member takes

Implication

Key Points

Cite This Study

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