IFN-gamma inhibits thrombin- and endotoxin-induced plasminogen activator inhibitor type 1 in human endothelial cells.

IFN-gamma inhibits thrombin- and endotoxin-induced plasminogen activator inhibitor type 1 in human endothelial cells.
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IFN-γ 抑制人内皮细胞中凝血酶和内毒素诱导的纤溶酶原激活剂抑制剂 1 型。

DOI:
10.4049/jimmunol.157.6.2610
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发表时间:
1996
影响因子:
4.4
通讯作者:
P. Tipping
P. Tipping
中科院分区:
医学2区
文献类型:
--
作者:
Marisa A. Gallicchio;Peter Hufnagl;Johann Wojta;P. Tipping

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在与血管损伤、动脉粥样硬化和败血症相关的炎症过程中,纤溶酶/纤溶酶原系统可能参与白细胞通过血管壁内皮细胞层的迁移。内皮细胞合成纤溶酶原激活物抑制剂1(PAI-1)可以保护这些细胞和内皮下细胞基质免受过度降解,并延缓白细胞迁移。在这项工作中,我们报告的第一次下调的基础和凝血酶或内毒素诱导的PAI-1在培养的人内皮细胞的活化T细胞的产品,IFN-γ。IFN-γ下调基础和凝血酶或内毒素诱导的内皮PAI-1蛋白被认为是时间和剂量依赖性的。对于人大血管和微血管内皮细胞,使用20至200 U/ml的最佳IFN-γ浓度,相对于凝血酶或内毒素处理的对照,降低高达71%。然而,IFN-γ似乎不影响IL-1 α和TNF-α诱导的这些细胞中PAI-1蛋白或mRNA的水平。北方印迹分析显示,在与IFN-γ孵育24小时后,特异性内皮细胞凝血酶或LPS诱导的PAI-1 mRNA表达分别降低。这些结果表明,炎症过程中通过内皮细胞层的循环白细胞的迁移可能是促进的手段。
The plasmin/plasminogen system of enzymes may be involved in leukocyte migration through the endothelial cell layer of the vascular wall during inflammatory processes associated with vascular injury, atherosclerosis, and sepsis. Synthesis of plasminogen activator inhibitor type 1 (PAI-1) by the endothelium may protect these cells and the subendothelial cell matrix from excessive degradation and retard leukocyte migration. We report in this work for the first time the down-regulation of both basal and thrombin- or endotoxin-induced PAI-1 in cultured human endothelial cells by the activated T cell product, IFN-gamma. Down-regulation of basal and thrombin- or endotoxin-induced endothelial PAI-1 protein by IFN-gamma was found to be both time and dose dependent. Decreases of up to 71% relative to thrombin- or endotoxin-treated controls, using an optimal IFN-gamma concentration of between 20 and 200 U/ml, were found for human macrovascular and microvascular endothelial cells. However, IFN-gamma did not appear to affect IL-1 alpha- and TNF-alpha-induced levels of PAI-1 protein or mRNA in these cells. Northern blot analysis paralleled protein results, showing decreases in specific endothelial cell thrombin- or LPS-induced PAI-1 mRNA expression, respectively, after incubation with IFN-gamma for 24 h. These results suggest a means by which the migration of circulating leukocytes through endothelial cell layers during inflammation may be facilitated.
在人脐静脉内皮细胞培养物中添加内皮细胞生长因子和肝素可降低纤溶酶原激活剂抑制剂-1 的表达。
DOI: 10.1172/jci113635
发表时间: 1988
期刊: The Journal of clinical investigation
影响因子: --
作者:
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DOI: --
发表时间: 1990
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
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通讯作者: Pober,JS
Interferon-gamma 是人眼眶成纤维细胞中 1 型纤溶酶原激活剂抑制剂的诱导剂。
DOI: 10.1152/ajpcell.1992.263.1.c24
发表时间: 1992
期刊: The American journal of physiology
影响因子: --
作者:
Smith,TJ;Ahmed,A;Hogg,MG;Higgins,PJ
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DOI: 10.1073/pnas.90.7.2744
发表时间: 1993-04-01
影响因子: 11.1
作者:
PUGIN, J;SCHURERMALY, CC;TOBIAS, PS
通讯作者: TOBIAS, PS