Inhibitory Effect of Paclitaxel on Endothelial Cell Adhesion and Migration

Inhibitory Effect of Paclitaxel on Endothelial Cell Adhesion and Migration
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紫杉醇对内皮细胞粘附和迁移的抑制作用

DOI:
10.1159/000280587
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发表时间:
2010-02
期刊:
影响因子:
3.1
通讯作者:
Wei, Lei
Wei, Lei
中科院分区:
医学4区
文献类型:
--
作者:
Li, Hua;Zhang, Li-jun;Chen, Bai-hua;Zhou, Xuan;Su, Ke;Shi, Wen-tao;Wu, Jun-zhu;Yu, Hong;Wei, Lei

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经皮冠状动脉介入治疗的长期成功受到再狭窄的限制。因此,使用药物洗脱支架局部递送抗增殖药物紫杉醇已被应用于预防支架内再狭窄。然而,紫杉醇不仅抑制平滑肌细胞增殖,还会延迟受损部位的再内皮化,这可能导致潜在的危及生命的心血管不良事件,特别是晚期和极晚期支架血栓形成。我们研究了紫杉醇在内皮细胞系ECV304粘附和迁移中的作用。因此,我们也研究了ECV304细胞脱离和再附着过程中血管扩张剂刺激磷酸化蛋白(VASP)磷酸化和camp依赖性蛋白激酶活性的变化。结果表明,在紫杉醇(10µg/l)的作用下,VASP磷酸化水平的降低与camp依赖性蛋白激酶(PKA)活性的抑制平行。通过细胞粘附实验和二维及三维细胞迁移实验,观察紫杉醇对ECV304细胞粘附和迁移的影响。紫杉醇显著抑制ECV304细胞的粘附(p < 0.05)和迁移(p < 0.05)。这些数据表明紫杉醇的抑制作用可能是通过抑制ECV304细胞粘附和迁移过程中PKA活性来降低VASP的磷酸化而产生的。
The long-term success of percutaneous coronary interventions has been limited by restenosis. Therefore, local delivery of paclitaxel, an antiproliferative agent, using drug-eluting stents has been applied to prevent in-stent restenosis. However, paclitaxel not only inhibits smooth muscle cell proliferation, but also delays re-endothelialization of the damaged site, which may cause potentially life-threatening cardiovascular adverse events, especially late and very late stent thrombosis. We investigated the role of paclitaxel in endothelial cell line ECV304 adhesion and migration. Accordingly, changes in vasodilator-stimulated phosphoprotein protein (VASP) phosphorylation and cAMP-dependent protein kinase activity during ECV304 cell detachment and reattachment were investigated as well. The results showed that the decrease in VASP phosphorylation paralleled the inhibition of cAMP-dependent protein kinase (PKA) activity in the presence of paclitaxel (10 µg/l). Cell adhesion assay and two- and three-dimensional cell migration assays were performed to determine the effect of paclitaxel on the adhesion and migration of ECV304 cells. Paclitaxel significantly suppresses the adhesion (p < 0.05) and migration of ECV304 cells (p < 0.05). These data suggest that the inhibitory effect of paclitaxel may be produced by decreasing the phosphorylation of VASP via inhibition of PKA activity during ECV304 cell adhesion and migration.
DOI: 10.1159/000067202
发表时间: 2002-11-01
影响因子: 1.7
作者:
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影响因子: 11.1
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