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Tropical Journal of Pharmaceutical Research
Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, Nigeria
ISSN: 1596-5996
EISSN: 1596-9827
Vol. 12, No. 4, 2013, pp. 511-515
Bioline Code: pr13077
Full paper language: English
Document type: Research Article
Document available free of charge

Tropical Journal of Pharmaceutical Research, Vol. 12, No. 4, 2013, pp. 511-515

 en Mechanism of Ursolic Acid-Mediated Inhibition of Proliferation in Vascular Endothelial Glioaytoma
Ye, Lin-Qi; Ye, Xiu-Feng & Xu, Hong

Abstract

Purpose: To investigate the effects of ursolic acid (UA) on expressions of ERK1, C-Jun, C-Myc and Cyclin D1 in Human Umbilical Vein Endothelial Cells (HUVEC), and to explore the mechanism of anti-cancer activity of UA on glioma.
Methods: HUVEC was treated with UA (0, 31.5, 62.5, 125, 250, 500 μg/mL) for 24 h, and 125 μg/mL for 0, 12, 24, 48 h, respectively) and PD98059 in vitro. Real-time polymerase chain reaction (RT-PCR) was performed to measure the endogenous mRNA levels of ERK1, C-Jun, C-Myc, and Cyclin D1, and Western blotting was used to determine the expressions of ERK1, C-Jun, C-Myc, and Cyclin D1 proteins.
Results: The results show that the mRNA levels of ERK1, C-Jun, C-Myc, and Cyclin D1 were down-regulated, following treatment with UA (in a dose- and time-dependent manner) and PD98059 (p < 0.05). In addition, the protein expressions of ERK1, C-Jun, C-Myc, and cyclin D1 were all significantly down-regulated, after treatment with UA (in a dose- and time-dependent manner) and PD98059 (p < 0.05).
Conclusion: The findings indicate that UA can significantly inhibit the generation of vascular endothelial cells of glioma by down-regulating the expressions of ERK1, C-Jun, C-Myc and Cyclin D1 of ERK signal transduction pathway.

Keywords
Ursolic acid; Vascular endothelial cell; ERK signal pathway; Glioma; Down-regulation; Anti-cancer

 
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