Carbon monoxide (CO)-releasing molecule-derived CO regulates tissue factor and plasminogen activator inhibitor type 1 in human endothelial cells

详细信息    查看全文

• 作者：Keiko Maruyama ; Eriko Morishita ; Takeo Yuno ; Akiko Sekiya ; Hidesaku Asakura ; Shigeki Ohtake ; Akihiro Yachie
• 关键词：CORM-2 ; tricarbonyldichlororuthenium (II) dimer ; CO ; carbon monoxide ; HO-1 ; heme oxygenase-1 ; TF ; tissue factor ; PAI-1 ; plasminogen activator inhibitor type 1 ; HUVECs ; human umbilical vein endothelial cells ; PBMCs ; Peripheral blood mononuclear cells ; TNF-
• 刊名：Thrombosis Research
• 出版年：2012
• 出版时间：September, 2012
• 年：2012
• 卷：130
• 期：3
• 页码：e188-e193
• 全文大小：609 K

文摘

Introduction

Heme oxygenase-1 (HO-1) is the rate limiting enzyme that catalyzes the conversion of heme into biliverdin, free iron, and carbon monoxide (CO). The first human case of HO-1 deficiency showed abnormalities in blood coagulation and the fibrinolytic system. Thus, HO-1 or HO-1 products, such as CO, might regulate coagulation and the fibrinolytic system. This study examined whether tricarbonyldichlororuthenium (II) dimer (CORM-2), which liberates CO, modulates the expression of tissue factor (TF) and plasminogen activator inhibitor type 1 (PAI-1) in human umbilical vein endothelial cells (HUVECs), and TF expression in peripheral blood mononuclear cells (PBMCs). Additionally, we examined the mechanism by which CO exerts its effects.

Materials and Methods

HUVECs were pretreated with 50 ¦ÌM CORM-2 for 3 hours, and stimulated with tumor necrosis factor-¦Á (TNF-¦Á, 10 ng/ml) for an additional 0-5 hours. PBMCs were pretreated with 50-100 ¦ÌM CORM-2 for 1hour followed by stimulating with lipopolysaccharid (LPS, 10 ng/ml) for additional 0-9 hours. The mRNA and protein levels were determined by RT-PCR and western blotting, respectively.

Results

Pretreatment with CORM-2 significantly inhibited TNF-¦Á-induced TF and PAI-1 up-regulation in HUVECs, and LPS-induced TF expression in PBMCs. CORM-2 inhibited TNF-¦Á-induced activation of p38 MAPK, ERK1/2, JNK, and NF-¦ÊB signaling pathways in HUVECs.

Conclusions

CORM-2 suppresses TNF-¦Á-induced TF and PAI-1 up-regulation, and MAPKs and NF-¦ÊB signaling pathways activation by TNF-¦Á in HUVECs. CORM-2 suppresses LPS-induced TF up-regulation in PBMCs. Therefore, we envision that the antithrombotic activity of CORM-2 might be used as a pharmaceutical agent for the treatment of various inflammatory conditions.