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Cited by 197

The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

Lipopolysaccharide-induced Expression of Interferon-β Mediates the Timing of Inducible Nitric-oxide Synthase Induction in RAW 264.7 Macrophages

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Jacobs, Aaron T., Ignarro, Louis J.·2001·Journal of Biological Chemistry

Abstract

The production of nitric oxide by macrophages has been implicated as a host defense mechanism against microbial pathogens and tumor cells. Recent reports have implicated interferon-alpha/beta (IFN-alpha/beta) as an autocrine/paracrine signal critical for the induction of murine iNOS. In this report we have systematically investigated the role of IFN-beta in the induction of iNOS in the murine macrophage cell line, RAW 264.7. First, we demonstrate that IFN-beta expression is highly up-regulated, and is secreted in response to lipopolysaccharide (LPS). Treatment of RAW macrophages with LPS results in a time-dependent phosphorylation of STAT-1 on both tyrosine residue 701 (Tyr-701) and serine residue 727 (Ser-727) that is consistent with the timing of endogenous IFN-beta expression. LPS also induces interferon regulatory factor-1 expression with similar kinetics. We further demonstrate that exogenous IFN-beta accelerates the induction of iNOS by LPS. The acceleration of iNOS induction is observed at the levels of transcription, protein expression, and NO formation. Accordingly, we propose that the cytokine environment of macrophages may determine the rate and magnitude of nitric oxide production, thereby regulating the cytotoxic response to pathogen challenge.

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Metadata

Authors
Jacobs, A. T., & Ignarro, L. J.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2001-12
Volume
276
Issue
51
Pages
47950-47957
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1578257252
Cited by
197
References
3
FWCI
2.21
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Lipopolysaccharide-induced Expression of Interferon-β Mediates the Timing of Inducible Nitric-oxide Synthase Induction in RAW 264.7 Macrophages. https://app.cochat.ai/papers/10.1074/jbc.m106639200
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Jacobs, A. T., & Ignarro, L. J. (2001). Lipopolysaccharide-induced Expression of Interferon-β Mediates the Timing of Inducible Nitric-oxide Synthase Induction in RAW 264.7 Macrophages. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m106639200

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