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Abstract Title:

[Inhibitory effect of ginsenoside Rg3 on the tube-like structure formation in human nasopharyngeal carcinoma HNE-1 cell line in vitro].

Abstract Source:

Zhonghua Zhong Liu Za Zhi. 2010 Oct ;32(10):739-42. PMID: 21163062

Abstract Author(s):

Hong-biao Wang, Ying-cheng Lin, De Zeng, Wen Lin, Chao-qun Hong, Wen-zhao Lin, Jiong-yu Chen

Article Affiliation:

Hong-biao Wang

Abstract:

OBJECTIVE: To study the anti-angiogenic effect of ginsenoside Rg3 (Rg3 in abbreviation) in human nasopharyngeal carcinoma HNE-1 cells in vitro.

METHODS: The tube-like structure (TLS) formation of HNE-1 cells, cultured in medium with different concentrations of Rg3, was determined by in vitro anti-angiogenic test based on preliminary experiment observing the TLSs formed by HNE-1 cells on Matrigel and their structural characteristics. The VEGF expression level in HNE-1 cells was determined by immunohistochemistry (IHC) and Western-blot test after 48-hour cultured in medium with different concentrations of Rg3.

RESULTS: HNE-1 cells could form TLSs and mosaic vessels when mix-cultured with CRL-2480 on Matrigel. Rg3 could inhibit the TLS formation of HNE-1 cells. After 24-hour culture in medium with Rg3 at concentrations of 0, 50, 100 and 200µg/ml, the number of TLSs were 75.50 ± 6.86, 55.00 ± 11.92, 39.75 ± 7.93 and 24.50 ± 6.25, respectively, which were negatively correlated with the concentrations of Rg3 (r = -0.928; P<0.01). After 48 hours of culture, the expressions of VEGF significantly declined by IHC test with results as 0.19± 0.03, 0.13 ± 0.02, 0.11 ± 0.01, and 0.08 ± 0.01, respectively, which were negatively correlated with the concentrations of Rg3 (r = -0.911; P<0.01). The expressions of VEGF also gradually decreased as revealed by Western blot test, with corresponding results as 119.49, 111.51, 86.45, and 38.29. All of the tests showed significantly declined results in the group at the concentration of 200µg/ml Rg3.

CONCLUSION: Rg3 can inhibit the vasculogenic mimicry of HNE-1 cells, and the possible mechanism might be associated with the down-regulation of VEGF protein expression in HNE-1 cells.

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