Abstract | OBJECTIVE: Vascular smooth muscle cells (VSMCs) can switch between differentiated and dedifferentiated phenotypes, and this phenotype switch is believed to be essential for repair of vascular injury. We studied the inhibitory effect of smooth muscle 22 alpha (SM22 alpha) on VSMC proliferation in vitro and in vivo and explored the potential molecular mechanisms of this effect. METHODS AND RESULTS: CONCLUSIONS: These findings suggest that high expression of SM22 alpha inhibits cell proliferation via reduction of the response to mitogen stimuli in VSMCs and provide a novel mechanism by which VSMCs maintain their contractile phenotype and resist mitogenic stimuli in an SM22 alpha-dependent manner.
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Authors | Li-Hua Dong, Jin-Kun Wen, George Liu, Michael A McNutt, Sui-Bing Miao, Rui Gao, Bin Zheng, Hailin Zhang, Mei Han |
Journal | Arteriosclerosis, thrombosis, and vascular biology
(Arterioscler Thromb Vasc Biol)
Vol. 30
Issue 4
Pg. 683-91
(Apr 2010)
ISSN: 1524-4636 [Electronic] United States |
PMID | 20139360
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Microfilament Proteins
- Muscle Proteins
- Platelet-Derived Growth Factor
- Proto-Oncogene Proteins c-sis
- transgelin
- Becaplermin
- Proto-Oncogene Proteins c-raf
- Raf1 protein, rat
- Mitogen-Activated Protein Kinase 1
- Mitogen-Activated Protein Kinase 3
- MAP Kinase Kinase Kinases
- MAP Kinase Kinase 1
- MAP Kinase Kinase 2
- ras Proteins
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Topics |
- Adenoviridae
(genetics)
- Animals
- Becaplermin
- Carotid Artery Injuries
(enzymology, etiology, pathology, physiopathology)
- Catheterization
(adverse effects)
- Cell Cycle
- Cell Dedifferentiation
- Cell Proliferation
- Cells, Cultured
- Disease Models, Animal
- Down-Regulation
- Genetic Vectors
- Humans
- Hyperplasia
- Immunoprecipitation
(methods)
- MAP Kinase Kinase 1
(metabolism)
- MAP Kinase Kinase 2
(metabolism)
- MAP Kinase Kinase Kinases
(metabolism)
- Male
- Microfilament Proteins
(genetics, metabolism)
- Mitogen-Activated Protein Kinase 1
(metabolism)
- Mitogen-Activated Protein Kinase 3
(metabolism)
- Muscle Proteins
(genetics, metabolism)
- Muscle, Smooth, Vascular
(enzymology, injuries, pathology, physiopathology)
- Myocytes, Smooth Muscle
(enzymology, pathology)
- Phenotype
- Platelet-Derived Growth Factor
(metabolism)
- Protein Binding
- Proto-Oncogene Proteins c-raf
- Proto-Oncogene Proteins c-sis
- RNA Interference
- Rats
- Rats, Sprague-Dawley
- Signal Transduction
- Time Factors
- Transfection
- Vasoconstriction
- ras Proteins
(metabolism)
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