血小板因子4经Toll样受体4上调巨噬细胞基质金属蛋白酶9表达

被引:6
作者
赵战芝 [1 ]
何钒 [1 ,2 ]
唐雅玲 [1 ]
孙慧 [1 ]
机构
[1] 南华大学心血管病研究所暨动脉硬化学湖南省重点实验室
[2] 湖北省宜昌市中心人民医院
关键词
血小板因子4; 基质金属蛋白酶9; 巨噬细胞; Toll样受体4;
D O I
暂无
中图分类号
R363 [病理生理学];
学科分类号
100104 ;
摘要
目的观察血小板因子4(PF4)对THP-1单核源性巨噬细胞基质金属蛋白酶9(MMP-9)表达的影响,并初步探讨其机制。方法佛玻酯诱导THP-1细胞分化成巨噬细胞。巨噬细胞经不同浓度PF4(0~200μg/L)处理一定时间后,RT-PCR和Western blot检测MMP-9和Toll样受体4(TLR4)表达。为了研究TLR4在其中的作用,细胞经TLR4阻断剂预处理30 min后,再与PF4孵育特定时间,检测MMP-9表达。结果与对照组比较,50μg/L PF4即可显著上调巨噬细胞MMP-9 mRNA和蛋白水平,至100μg/L时,MMP-9 mRNA和蛋白表达达到最大效应水平,分别较对照组增高约3.8倍(P<0.001)和1.5(P<0.01)倍。PF4(100μg/L)也较对照组显著上调TLR4 mRNA和蛋白水平。而加入TLR4阻断剂后可逆转PF4诱导的巨噬细胞MMP-9表达上调,其mRNA和蛋白水平分别较PF4单独孵育组降低约26%和21%(P均<0.05)。结论 PF4可能通过TLR4上调巨噬细胞MMP-9的表达。
引用
收藏
页码:769 / 773
页数:5
相关论文
共 12 条
[1]  
Inflammation in atherosclerosis. Libby P. Nature . 2002
[2]  
Loss of Matrix Metalloprotein-ase-9 or Matrix Metalloproteinase-12 Protects Apolipoprotein E-DeficientMice Against Atherosclerotic Media Destruction but Differentially AffectsPlaque Growth. Luttun A,Lutgens E,Manderveld A,et al. Circulation . 2004
[3]  
Elimination of platelet factor 4 (PF4) from platelets reduces atherosclerosis in C57Bl/6 and apoE-/- mice. Sachais Bruce S,Turrentine Tiffany,Dawicki McKenna Jennine M,Rux Ann H,Rader Daniel,Kowalska M Anna. Thrombosis and Haemostasis . 2007
[4]   基质金属蛋白酶9血清水平及基因-1562C>T多态性与维吾尔族急性缺血性脑卒中临床分型的关系 [J].
岳蕴华 ;
白旭东 ;
张小宁 ;
刘毓 ;
毛洁萍 ;
地拉娜木 ;
杨小英 ;
米合热依 ;
曾海波 .
中国动脉硬化杂志, 2014, 22 (01) :55-60
[5]  
Inflammatory Mechanisms in Atherosclerosis: The Impact of Matrix Metalloproteinases. Gerasimos Siasos,Dimitris Tousoulis,Stamatios Kioufis. CURRENT TOPICS IN MEDICINAL CHEMISTRY . 2012
[6]  
Platelet factor 4 enhances the binding of oxidized low-density lipoprotein to vascular wall cells. Nassar Taher,Sachais Bruce S,Akkawi Sa’ed,Kowalska Maria Anna,Bdeir Khalil,Leitersdorf Eran,Hiss Edna,Ziporen Leah,Aviram Michael,Cines Douglas,Poncz Mortimer,Higazi Abd Al-Roof. Journal of Biological Chemistry . 2002
[7]  
CXCL4-induced monocyte survival, cytokine expression, and oxygen radical formation is regulated by sphingosine kinase 1. Kasper Brigitte,Winoto-Morbach Supandi,Mittelst?dt Jessica,Brandt Ernst,Schütze Stefan,Petersen Frank. European journal of immunology . 2010
[8]  
Interaction of PF4 (CXCL4) with the vasculature: a role in atherosclerosis and angiogenesis. Aidoudi Sallouha,Bikfalvi Andreas. Thrombosis and Haemostasis . 2010
[9]  
Platelet-Derived Chemokines in Atherogenesis: What’s New?. Christian A. Gleissner. CURRENT VASCULAR PHARMACOLOGY . 2012
[10]  
Matrix metalloproteinases:Inflammatory regulators of cell behaviors in vascular formation and remodeling. Chen Q,Jin M,Yang F,et al. Mediators of Inflammation . 2013