title: Ginsenoside Rb3 inhibits angiotensin II-induced vascular smooth muscle cells proliferation.
abstract: This study was designed to examine the effect of ginsenoside Rb3 on angiotensin (Ang) II-induced proliferation of cultured rat vascular smooth muscle cells (VSMCs). VSMCs proliferation was evaluated by [3H]Thymidine incorporation. The cell cycle was examined by flow cytometry. The expression of mRNA of proto-oncogene c-myc, c-fos and c-jun was observed by RT-PCR. Ginsenoside Rb3 had no effects on VSMCs proliferation in physiological condition. Ang II significantly increased the proliferation of VSMCs and the expression of mRNA of proto-oncogene c-myc, c-fos and c-jun. Ginsenoside Rb3 markedly inhibited Ang II-induced VSMCs proliferation. Concomitantly, ginsenoside Rb3 decreased cell cycle progression from G(0)/G(1) to S phase. Furthermore, ginsenoside Rb3 significantly attenuated the expression of mRNA of proto-oncogene c-myc, c-fos and c-jun. This study showed that ginsenoside Rb3 inhibited Ang II-induced VSMCs proliferation, at least in part by inhibiting Ang II-induced G(0)/G(1) to S phase transition and attenuating the expression of mRNA of c-fos, c-jun and c-myc. The findings may explain the beneficial effects of ginsenoside Rb3 in cardiovascular diseases, and it will be useful to develop prevention and therapeutics of cardiovascular diseases.
authors.affiliation: Department of Pharmacology, School of Pharmacy, Jilin University, Changchun, China.
authors.forename: Tian
authors.initials: T
authors.lastname: Wang
authors.forename: Xiao-Feng
authors.initials: XF
authors.lastname: Yu
authors.forename: Shao-Chun
authors.initials: SC
authors.lastname: Qu
authors.forename: Hua-Li
authors.initials: HL
authors.lastname: Xu
authors.forename: Da-Yuan
authors.initials: DY
authors.lastname: Sui
mesh_terms: D000804:Angiotensin II / Q000494:pharmacology*; D000818:Animals; D001013:Aorta, Thoracic / Q000166:cytology; D002453:Cell Cycle / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D004247:DNA / Q000096:biosynthesis / Q000187:drug effects; D004336:Drug Antagonism; D036145:Ginsenosides / Q000494:pharmacology*; D008297:Male; D009131:Muscle, Smooth, Vascular / Q000187:drug effects*; D005894:Panax / Q000737:chemistry*; D010936:Plant Extracts / Q000494:pharmacology; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D036145:Ginsenosides; D010936:Plant Extracts; D000804:Angiotensin II; C044463:ginsenoside Rb3; D004247:DNA