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Updated: Aug 17, 2026

Murine Aortic Crush Injury: An Efficient In Vivo Model of Smooth Muscle Cell Proliferation and Endothelial Function
06:14

Murine Aortic Crush Injury: An Efficient In Vivo Model of Smooth Muscle Cell Proliferation and Endothelial Function

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Critical role of Mst1 in vascular remodeling after injury

Hiroki Ono1, Toshihiro Ichiki, Hideki Ohtsubo

  • 1Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, 812-8582 Fukuoka, Japan.

Arteriosclerosis, Thrombosis, and Vascular Biology
|June 18, 2005
PubMed
Abstract

Insights

Mst1 kinase induces apoptosis in vascular smooth muscle cells (VSMCs), reducing vascular remodeling in disease. This finding highlights Mst1 as a therapeutic target for vascular proliferative conditions.

Area of Science:

  • Vascular Biology
  • Cell Death Pathways
  • Molecular Medicine

Background:

  • Vascular smooth muscle cell (VSMC) apoptosis contributes to chronic vascular lesions and remodeling.
  • Mst1 kinase is activated by apoptotic stimuli, but its physiological role in VSMCs is unknown.

Purpose of the Study:

  • To investigate the role of Mst1 in VSMC apoptosis and vascular remodeling.
  • To determine if Mst1 is a potential therapeutic target for vascular proliferative diseases.

Main Methods:

  • VSMCs were treated with staurosporine to induce apoptosis and Mst1 activation.
  • Adenovirus-mediated overexpression of Mst1 (AdMst1) was used in VSMCs and balloon-injured rat carotid arteries.
  • Neointimal formation and apoptosis were assessed in injured arteries.

Main Results:

  • Staurosporine induced VSMC apoptosis, Mst1 cleavage, and caspase 3 activation.
  • AdMst1 overexpression in VSMCs increased apoptosis and caspase 3 activation.
  • AdMst1 suppressed neointimal formation in injured rat carotid arteries by increasing VSMC apoptosis without affecting proliferation.

Conclusions:

  • Mst1 induces apoptosis in VSMCs, playing a key role in vascular remodeling.
  • Mst1 represents a potential therapeutic target for vascular proliferative diseases like atherosclerosis.

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