Gene Regulation in Macrophage Activation: Differential Regulation of Genes Encoding for Tumor Necrosis Factor, Interleukin‐1, JE, and KC by interferon‐γ and Lipopolysaccharide
Gene Regulation in Macrophage Activation: Differential Regulation of Genes Encoding for Tumor Necrosis Factor, Interleukin‐1, JE, and KC by interferon‐γ and Lipopolysaccharide
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巨噬细胞激活中的基因调控:干扰素-γ和脂多糖对肿瘤坏死因子、白细胞介素-1、JE和KC编码基因的差异调节
DOI:
10.1002/jlb.48.5.412
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发表时间:
1990
影响因子:
5.5
通讯作者:
D. Adams
中科院分区:
文献类型:
--
作者:
Sheau;T. Koerner;D. Adams
Although macrophage activation is induced in a complex manner by signals such as Interferon‐γ(IFNγ) and bacterial lipopolysaccharide (LPS) and depends on alterations in levels of specific proteins due to differences in gene expression, the complexity of gene regulation during macrophage activation in regard to multiple signals is not fully appreciated. To probe this question, we selected four model genes encoding for tumor necrosis factor (TNF), interleukin‐1 (IL‐1), and the immediate early genes JE and KC. After analyses of Northern blots for specific mRNA, LPS was found to enhance levels of mRNA for IL‐1, TNF, JE, and KC. IFNγ initialed heightened mRNA levels for JE but did not alter specific mRNA for IL‐1, TNF, or KC. When IFNγ and LPS were combined, additive effects on levels of specific mRNA for JE, enhancement of mRNA for TNF, suppressed mRNA for KC, and no effect on mRNA for IL‐1 were observed. When transcription of these genes was assessed by nuclear “run on” experiments, LPS increased transcription of KC and TNF but not of IL‐1 or JE, implying that the increased levels of mRNA for JE and IL‐1 were attributable to increased stability of mRNA. Likewise, IFNγ did not initiate transcription of JE. When IFNγ and LPS were given together, IFNγ enhanced the LPS‐induced transcription of TNF and KC, suggesting decreased stability of mRNA for KC. A distinct pattern of regulation for each of the four genes was thus observed. Taken together, the data suggest that gene regulation in macrophage activation represents a complex response of enhanced and suppressed transcription and mRNA stability, the precise pattern of which depends on the stimuli given to the macrophages and the gene examined.
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DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Hall,DJ;Stiles,CD
通讯作者:
Stiles,CD
DOI:
--
发表时间:
1989
期刊:
The Year in immunology
影响因子:
--
作者:
Adams,DO;Koerner,TJ
通讯作者:
Koerner,TJ
影响因子:
56.9
作者:
LINIAL, M;GUNDERSON, N;GROUDINE, M
通讯作者:
GROUDINE, M
DOI:
--
发表时间:
1988
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Tannenbaum,CS;Koerner,TJ;Jansen,MM;Hamilton,TA
通讯作者:
Hamilton,TA
DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Remold-O'Donnell,E
通讯作者:
Remold-O'Donnell,E