Panaxquin quefolium diolsaponins dose-dependently inhibits the proliferation of vascular smooth muscle cells by downregulating proto-oncogene expression
| Autor: | Xuezhong Zhao, Zhihao Wang, Yingkai Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Male
medicine.medical_specialty Vascular smooth muscle Proliferation index proliferation Panax quinquefolium diolsaponins Down-Regulation Panax Biology Polymerase Chain Reaction Muscle Smooth Vascular Flow cytometry Rats Sprague-Dawley Internal medicine Proto-Oncogenes medicine vascular smooth muscle cells Animals Pharmacology (medical) RNA Messenger Cells Cultured Cell Proliferation Pharmacology Oncogene medicine.diagnostic_test Dose-Response Relationship Drug Cell growth Angiotensin II proto-oncogene Cell cycle Saponins Flow Cytometry Rats Reverse transcription polymerase chain reaction Endocrinology Cancer research cardiovascular system Research Article |
| Zdroj: | Indian Journal of Pharmacology |
| ISSN: | 1998-3751 0253-7613 |
| Popis: | Objectives: Panax quinquefolium saponins (PQS) potentially prevent atherosclerosis in vivo. The proliferation of vascular smooth muscle cells (VSMCs) plays an important role in coronary heart disease and restenosis after percutaneous coronary intervention. Here, we investigated the potential effect of Panax quinquefolium diolsaponins (PQDS), a subtype of PQS, on angiotensin II (AngII)-induced VSMC proliferation. Materials and Methods: Isolated rat VSMCs were identified by immunocytochemical analysis. Cell proliferation was determined using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. The cell cycle and proliferation index were analyzed using flow cytometry. The messenger ribonucleic acid (mRNA) expression of proto-oncogenes was evaluated using reverse transcription polymerase chain reaction. Results: Over 98% of cultured VSMCs were immunopositive for anti-α-smooth muscle actin. AngII promoted cell proliferation, whereas PQDS significantly suppressed VSMC growth in a dose-dependent manner. Moreover, PQDS suppressed AngII-induced proliferation of VSMCs by arresting the Gap 0/Gap 1 phase. Down-regulated mRNA expressions of proto-oncogenes occurred after PQDS application. Conclusions: Our study demonstrates that PQDS may reduce AngII-stimulated VSMC proliferation by suppressing the expression of proto-oncogenes. These results may provide insights for the development of novel traditional Chinese medicines to prevent atherosclerosis. |
| Databáze: | OpenAIRE |
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