ANP inhibits TNF‐α‐induced endothelial MCP‐1 expression—involvement of p38 MAPK and MKP‐1

ANP inhibits TNF‐α‐induced endothelial MCP‐1 expression—involvement of p38 MAPK and MKP‐1
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ANP 抑制 TNF-α 诱导的内皮 MCP-1 表达——涉及 p38 MAPK 和 MKP-1

DOI:
10.1189/jlb.0603254
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发表时间:
2003
影响因子:
5.5
通讯作者:
A. Kiemer
A. Kiemer
中科院分区:
医学3区
文献类型:
--
作者:
N. Weber;Signe B. Blumenthal;T. Hartung;A. Vollmar;A. Kiemer

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心钠素 (ANP) 已被证明可以通过抑制 p38 丝裂原激活蛋白激酶 (MAPK) 和核因子 (NF)-κB 通路来减少肿瘤坏死因子-α (TNF-α) 诱导的内皮细胞激活。本研究的目的是确定 ANP 是否能够抑制 TNF-α 诱导的内皮细胞中单核细胞趋化蛋白-1 (MCP-1) 的表达,并阐明相关机制。用 ANP 预处理人脐静脉内皮细胞 (HUVEC) 显着降低 TNF-α 诱导的 MCP-1 蛋白和 mRNA 的表达。 ANP 的作用是通过鸟苷酸环化酶 (GC) 偶联 A 受体介导的。 C 型利钠肽激活另一种 GC 偶联受体(利钠肽受体 B)以及 S-亚硝基-L-谷胱甘肽 (GSNO) 激活可溶性 GC 发挥与 ANP 类似的作用,支持环磷酸鸟苷 (cGMP) 在信号转导中的作用。反义实验表明,ANP 介导的 TNF-α 诱导的 MCP-1 表达抑制需要 MAPK 磷酸酶-1 (MKP-1) 诱导,因此需要抑制 p38 MAPK。为了研究 TNF-α 诱导的 p38 MAPK 和 NF-κB 激活之间潜在的相互作用,使用了 p38 MAPK 抑制剂 SB203580 和显性失活 p38 MAPK 突变体。结果表明,p38 MAPK 活性的阻断会导致 NF-κB 的激活增加,因此表明 p38 MAPK 和 NF-κB 具有反调节作用。由于反义实验揭示了 MKP-1 诱导的关键作用,因此 p38 MAPK 抑制在 ANP 介导的 MCP-1 表达减弱中发挥着关键作用,这种作用似乎相当独立于 NF-κB 抑制。
Atrial natriuretic peptide (ANP) has been shown to reduce tumor necrosis factor‐α (TNF‐α)‐induced activation of endothelial cells via inhibition of p38 mitogen‐activated protein kinase (MAPK) and nuclear factor (NF)‐κB pathways. The aim of this study was to determine whether ANP is able to inhibit TNF‐α‐induced expression of monocyte chemoattractant protein‐1 (MCP‐1) in endothelial cells and to elucidate the mechanisms involved. Pretreatment of human umbilical vein endothelial cells (HUVEC) with ANP significantly reduced TNF‐α‐induced expression of MCP‐1 protein and mRNA. The effects of ANP were shown to be mediated via the guanylyl‐cyclase (GC)‐coupled A receptor. Activation of the other GC‐coupled receptor (natriuretic peptide receptor‐B) by the C‐type natriuretic peptide as well as activation of soluble GC with S‐nitroso‐L‐glutathione (GSNO) exerted similar effects as ANP, supporting a role for cyclic guanosine monophosphate (cGMP) in the signal transduction. Antisense experiments showed a requirement of MAPK phosphatase‐1 (MKP‐1) induction and therefore, inhibition of p38 MAPK in the ANP‐mediated inhibition of TNF‐α‐induced expression of MCP‐1. To investigate a potential interplay between TNF‐α‐induced activation of p38 MAPK and NF‐κB, the p38 MAPK inhibitor SB203580 and a dominant‐negative p38 MAPK mutant were used. The results indicated that the blockade of p38 MAPK activity leads to an increased activation of NF‐κB and therefore, suggest a counter‐regulatory action of p38 MAPK and NF‐κB. As antisense experiments revealed a pivotal role for MKP‐1 induction and therefore, p38 MAPK inhibition in ANP‐mediated attenuation of MCP‐1 expression, this action seems to be rather independent of NF‐κB inhibition.
DOI: 10.3109/10623329909078496
发表时间: 1999
期刊: Endothelium : journal of endothelial cell research.
影响因子: --
作者:
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通讯作者: Berman,JW
DOI: --
发表时间: 1992
期刊: The Journal of biological chemistry
影响因子: --
作者:
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DOI: 10.1021/bi0263210
发表时间: 2002-10-29
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
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通讯作者: Golde, DW
DOI: 10.1161/01.atv.19.4.996
发表时间: 1999-04-01
影响因子: 8.7
作者:
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通讯作者: Frangos, JA
DOI: 10.1172/jci115411
发表时间: 1991-10-01
影响因子: 15.9
作者:
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