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Vascular Biology

Syndecan-4 Deficiency Limits Neointimal Formation After Vascular Injury by Regulating Vascular Smooth Muscle Cell Proliferation and Vascular Progenitor Cell Mobilization

Masahiro Ikesue, Yutaka Matsui, Daichi Ohta, Keiko Danzaki, Koyu Ito, Masashi Kanayama, Daisuke Kurotaki, Junko Morimoto, Tetsuhito Kojima, Hiroyuki Tsutsui, Toshimitsu Uede
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https://doi.org/10.1161/ATVBAHA.110.217703
Arteriosclerosis, Thrombosis, and Vascular Biology. 2011;ATVBAHA.110.217703
Originally published February 17, 2011
Masahiro Ikesue
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Yutaka Matsui
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Daichi Ohta
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Keiko Danzaki
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Koyu Ito
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Masashi Kanayama
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Daisuke Kurotaki
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Junko Morimoto
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Tetsuhito Kojima
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Hiroyuki Tsutsui
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Toshimitsu Uede
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Abstract

Objective—Syndecan-4 (Syn4) is a heparan sulfate proteoglycan and works as a coreceptor for various growth factors. We examined whether Syn4 could be involved in the development of neointimal formation in vivo.

Methods and Results—Wild-type (WT) and Syn4-deficient (Syn4−/−) mice were subjected to wire-induced femoral artery injury. Syn4 mRNA was upregulated after vascular injury in WT mice. Neointimal formation was attenuated in Syn4−/− mice, concomitantly with the reduction of Ki67-positive vascular smooth muscle cells (VSMCs). Basic-fibroblast growth factor – or platelet-derived growth factor-BB–induced proliferation, extracellular signal-regulated kinase activation, and expression of cyclin D1 and Bcl-2 were impaired in VSMCs from Syn4−/− mice. To examine the role of Syn4 in bone marrow (BM)–derived vascular progenitor cells (VPCs) and vascular walls, we generated chimeric mice by replacing the BM cells of WT and Syn4−/− mice with those of WT or Syn4−/− mice. Syn4 expressed by both vascular walls and VPCs contributed to the neointimal formation after vascular injury. Although the numbers of VPCs were compatible between WT and Syn4−/− mice, mobilization of VPCs from BM after vascular injury was defective in Syn4−/− mice.

Conclusion—Syn4 deficiency limits neointimal formation after vascular injury by regulating VSMC proliferation and VPC mobilization. Therefore, Syn4 may be a novel therapeutic target for preventing arterial restenosis after angioplasty.

  • growth factors
  • neointimal hyperplasia
  • vascular injury
  • vascular progenitor cells
  • vascular smooth muscle cells
  • Received October 12, 2010.
  • Accepted February 7, 2011.
  • © 2011 American Heart Association, Inc.
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    Syndecan-4 Deficiency Limits Neointimal Formation After Vascular Injury by Regulating Vascular Smooth Muscle Cell Proliferation and Vascular Progenitor Cell Mobilization
    Masahiro Ikesue, Yutaka Matsui, Daichi Ohta, Keiko Danzaki, Koyu Ito, Masashi Kanayama, Daisuke Kurotaki, Junko Morimoto, Tetsuhito Kojima, Hiroyuki Tsutsui and Toshimitsu Uede
    Arteriosclerosis, Thrombosis, and Vascular Biology. 2011;ATVBAHA.110.217703, originally published February 17, 2011
    https://doi.org/10.1161/ATVBAHA.110.217703

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    Syndecan-4 Deficiency Limits Neointimal Formation After Vascular Injury by Regulating Vascular Smooth Muscle Cell Proliferation and Vascular Progenitor Cell Mobilization
    Masahiro Ikesue, Yutaka Matsui, Daichi Ohta, Keiko Danzaki, Koyu Ito, Masashi Kanayama, Daisuke Kurotaki, Junko Morimoto, Tetsuhito Kojima, Hiroyuki Tsutsui and Toshimitsu Uede
    Arteriosclerosis, Thrombosis, and Vascular Biology. 2011;ATVBAHA.110.217703, originally published February 17, 2011
    https://doi.org/10.1161/ATVBAHA.110.217703
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  • Vascular Disease
    • Restenosis
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    • Cell Signaling/Signal Transduction
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