LPS and TNFα induce SOCS3 mRNA and inhibit IL-6-induced activation of STAT3 in macrophages

被引：181

作者：

Bode, JG

Nimmesgern, A

Schmitz, J

Schaper, F

Schmitt, M

Frisch, W

Hussinger, D

Heinrich, PC

Graeve, L

机构：

[1] Rhein Westfal TH Aachen Klinikum, Inst Biochim, D-52057 Aachen, Germany

[2] Rhein Westfal TH Aachen, Interdisziplinares Zentrum Klin Forsch, D-52074 Aachen, Germany

[3] Univ Dusseldorf, Med Klin, Klin Gastroenterol Hepatol & Infektiol, D-40225 Dusseldorf, Germany

来源：

FEBS LETTERS | 1999年 / 463卷 / 03期

关键词：

cytokine cross-talk; lipopolysaccharide resistance; inflammation; cytokine signaling;

D O I：

10.1016/S0014-5793(99)01662-2

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Recent findings indicate that cytokine signaling can be modulated by other mediators of simultaneously activated signal transduction pathways. In this study we show that LPS and TNF alpha are potent inhibitors of IL-6-mediated STAT3 activation in human monocyte derived macrophages, rat liver macrophages and RAW 264.7 mouse macrophages but not in human hepatoma cells (HepG2) or in rat hepatocytes. Accordingly, LPS and TNF alpha were found to induce the expression of SOCS3 mRNA in each of the investigated type of macrophages but not in HepG2 cells. Using a specific inhibitor, evidence is presented that the p38 MAP kinase might be involved, especially for the inhibitory effect of TNF alpha. (C) 1999 Federation of European Biochemical Societies.

引用

页码：365 / 370

页数：6

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