Tissue factor induces human coronary artery smooth muscle cell motility through Wnt-signalling

Authors


  • See also Shi K, Queiroz KCS, Stap J, Richel DJ, Spek CA. Protease-activated receptor-2 induces migration of pancreatic cancer cells in an extracellular ATP-dependent manner. This issue, pp 1892–902 and Versteeg HH, Ruf W. New helpers in TF-dependent migration. This issue, pp 1877–9.
  • Manuscript handled by: W. Ruf
  • Final decision: P. H. Reitsma, 10 June 2013

Correspondence: Lina Badimon, Cardiovascular Research Center, C/ Sant Antoni Mª Claret 167, 08025 Barcelona, Spain.

Tel.: +34 93 556 58 80; fax: +34 93 556 55 59.

E-mail: lbadimon@csic-iccc.org

Summary

Background

Tissue factor (TF) is the most relevant physiological trigger of thrombosis contributing to the presentation of clinical ischemic events after plaque rupture. However, the role of human vascular smooth muscle cell (HVSMC) TF in vascular remodeling, restenosis and atherosclerosis is less known. We have hypothesized that TF contributes to atherosclerotic lesion formation, triggering smooth muscle cell migration through a specific yet unknown signaling pathway.

Objectives

The aim of this study has been to investigate the signal transduction mechanism by which TF may contribute to the transition of resident static contractile HVSMC into a migrating cell that promotes atherosclerotic plaque progression.

Methods

We have used a system biology discovery approach with gene-engineered HVSMCs to identify genes/proteins involved in the TF-triggered effects in HVSMC obtained from the coronary arteries of human adult hearts.

Results

Analysis of wild-type HVSMC (TF+) and TF silenced HVSMC (TF) showed that TF is involved in the regulation of Wnt signaling and in the expression of downstream proteins that affect the atherosclerotic process.

Conclusions

The ‘in silico’ analysis pointed to specific Wnt-pathway proteins that have been validated in cell culture and also have been found expressed in human advanced atherosclerotic plaques but not in early lesions. TF signals through Wnt to regulate coronary smooth muscle cell migration and vascular remodeling.

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