Roles of periostin in proliferation and migration of vascular smooth muscle cells and the effect of atorvastatin on them / 中南大学学报(医学版)
Journal of Central South University(Medical Sciences)
; (12): 689-694, 2012.
Article
in Zh
| WPRIM
| ID: wpr-814619
Responsible library:
WPRO
ABSTRACT
OBJECTIVE@#To investigate the expression of periostin in in vitro cultured vascular smooth muscle cells (VSMCs) induced by TGF-β1 and the relationship between periostin expression and the migration and proliferation of the VSMCs. Further, to investigate the effects of atorvastatin on the above-mentioned processes and the molecular mechanisms of atorvastatin inhibition of TGF-β1- induced periostin production.@*METHODS@#Rat aorta smooth muscle cells were cultivated by the method of tissue explants adherence. Cells of generation 3 to 6 were used as the experimental system. Primary cultured rat vascular smooth muscle cells were treated by TGF-β1 and different concentrations of atorvastatin,Y-2763 (Rho kinase inhibitor), or atorvastatin plus MVA for 24 hours. The expression of periostin was measured by RT-PCR and Western blot. A Boyden chamber assay was used to measure cell migration, and an MTT test was used to measure cell proliferation.@*RESULTS@#Periostin expression in rat VSMCs stimulated by TGF-β1 increased significantly (4.158 ± 0.515 vs 0.385 ± 0.031), VSMC migration(25 ± 4 vs 8 ± 2) and proliferation (0.85 ± 0.06 vs 0.32 ± 0.03) also increased significantly. Atorvastatin significantly inhibited TGF-β1-induced periostin production in rat VSMCs, as well as VSMC migration and proliferation, in a dose-dependent manner. Rho kinase inhibitor Y-27632 significantly inhibited TGF-β1-induced periostin production in rat VSMCs (2.082 ± 0.245). The inhibitory effect of atorvastatin on periostin upregulation induced by TGF-β1 was reversed by mevalonate (3.838 ± 0.326).@*CONCLUSION@#Periostin can promote rat VSMC migration and proliferation. Atorvastatin inhibition of periostin expression induced by TGF-β1 in VSMCs may be exerted by inhibition of the production of MVA and other isoprene compounds and by blocking the Rho/Rho kinase signaling pathway.
Full text:
1
Database:
WPRIM
Main subject:
Pharmacology
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Pyrroles
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RNA, Messenger
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Signal Transduction
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Cell Adhesion Molecules
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Cell Movement
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Rats, Sprague-Dawley
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Cell Biology
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Myocytes, Smooth Muscle
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Cell Proliferation
Limits:
Animals
Language:
Zh
Journal:
Journal of Central South University(Medical Sciences)
Year:
2012
Document type:
Article