The role of heat shock protein 90 in migration and proliferation of vascular smooth muscle cells in the development of atherosclerosis

Jeonghan Kim, Sung Wuk Jang, Eunsoo Park, Minseok Oh, Sodam Park, Je Sang Ko

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The molecular chaperone heat shock protein 90 (HSP90) is overexpressed in plaques of atherosclerosis patients, and is associated with plaque instability. However, the role of HSP90 in atherosclerosis remains unclear. The present study investigated the effects of HSP90 inhibition on migration and proliferation of vascular smooth muscle cells (VSMCs) and involvement in atherosclerosis. To examine the role of HSP90 in VSMC migration, VSMCs were treated with the specific HSP90 inhibitors, 17-N-allylamino-17-demethoxygeldanamycin (17-AAG) and STA-9090. Results of a chemotaxis assay showed that the HSP90 inhibitors suppress migration of VSMCs. HSP90 inhibition also prevented invasion and sprout formation of VSMCs via inhibition of matrix metalloproteinase-2 proteolytic activity. Results of a flow cytometric analysis showed that HSP90 inhibition induces cell cycle arrest via regulation of cyclin D3, PCNA and pRb. To investigate the role of HSP90 in the development of atherosclerosis, low-density lipoprotein receptor (LDLR) deficient mice were fed with a high cholesterol diet for 4weeks and treated with 17-AAG for 8weeks. HSP90 inhibition suppressed migration of VSMCs into atherosclerotic plaque lesions in high cholesterol diet-stimulated LDLR-/- mice. Inhibition of HSP90 attenuates formation of atherosclerotic plaques via suppression of VSMC migration and proliferation, indicating that HSP90 inhibitors can be used as therapeutic agents for atherosclerosis and in stent restenosis.

Original languageEnglish
Pages (from-to)157-167
Number of pages11
JournalJournal of Molecular and Cellular Cardiology
Volume72
DOIs
Publication statusPublished - 2014 Jan 1

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HSP90 Heat-Shock Proteins
Vascular Smooth Muscle
Smooth Muscle Myocytes
Atherosclerosis
tanespimycin
LDL Receptors
Atherosclerotic Plaques
Cell Movement
Cholesterol
Cyclin D3
Diet
Molecular Chaperones
Matrix Metalloproteinase 2
Proliferating Cell Nuclear Antigen
Chemotaxis
Cell Cycle Checkpoints
Stents
Inhibition (Psychology)

ASJC Scopus subject areas

  • Molecular Biology
  • Cardiology and Cardiovascular Medicine

Cite this

The role of heat shock protein 90 in migration and proliferation of vascular smooth muscle cells in the development of atherosclerosis. / Kim, Jeonghan; Jang, Sung Wuk; Park, Eunsoo; Oh, Minseok; Park, Sodam; Ko, Je Sang.

In: Journal of Molecular and Cellular Cardiology, Vol. 72, 01.01.2014, p. 157-167.

Research output: Contribution to journalArticle

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