ABSTRACT
AIM: To study the effects of BTEB2 antisense RNA on the proliferation of vascular smooth muscle cells(VSMC) and its mechanism. METHODS: After the recombinant adenovirus Ad.ASBTEB2 infected VSMC, antisense RNA and protein expression of BTEB2 were evaluated respectively by RT-PCR and Western blotting. Proliferation and cell cycle progress of VSMC were analyzed respectively by MTT test and flow cytometry. The expression of PCNA, AT1R and PDGF-BB were detected by immunocytochemistry. RESULTS: The expression of BTEB2 antisense RNA was demonstrated in VSMC after infected by recombinant adenovirus. Ad.ASBTEB2 infection significantly inhibited BTEB2 protein expression and proliferation of VSMC induced by serum, and resulted in G_0/G_1 blocking. The inhibitory effects of BTEB2 antisense RNA on the expression of PCNA, AT1R and PDGF-BB were demonstrated by immunohistochemistry. CONCLUSION: BTEB2 antisense RNA significantly inhibits the proliferation of VSMC, probably by suppressing the expression of VSMC proliferation related genes, such as PCNA, AT1R and PDGF-BB.