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Molecules 2012, 17(7), 8633-8646; doi:10.3390/molecules17078633

Anti-Hepatitis B Virus Activity of Chickweed [Stellaria media (L.) Vill.] Extracts in HepG2.2.15 Cells

Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine, 100 Shizi Street, Nanjing 210028, China
School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
Author to whom correspondence should be addressed.
Received: 22 May 2012 / Revised: 29 June 2012 / Accepted: 9 July 2012 / Published: 18 July 2012
(This article belongs to the Section Natural Products)
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Stellaria media (Linn.) Villars is a traditional Chinese medicine that has been used for over 200 years, mainly for the treatment of dermatitis and other skin diseases. It has also been used as an anti-viral agent. All the fresh chickweed juice samples used in this study were prepared using macroporous resin and ultrafiltration technology. The anti-hepatitis B virus (HBV) activity of S. media was evaluated in vitro using the human HBV-transfected liver cell line HepG2.2.15. The concentrations of hepatitis B surface antigen (HBsAg) and hepatitis B e antigen (HBeAg) in HepG2.2.15 cell culture medium were determined by enzyme-linked immunosorbent assay (ELISA) after S. media-n (SM-n) treatment for 6 or 9 days. HBV DNA was quantified using transcription-mediated amplification and real-time polymerase chain reaction. In HepG2.2.15 cells, 30 μg/mL SM-3 effectively suppressed the secretion of HBsAg and HBeAg with inhibition rates of 27.92% and 25.35% after 6 days of treatment, respectively. Consistent with the reduction in HBV antigens, SM-3 also reduced the level of HBV DNA in a dose-dependent manner. The characterization and quantitation of the chemical composition of SM-3 showed the presence of flavonoid C-glycosides, polysaccharides, and protein, which exhibited diverse antiviral activities. In conclusion, our results demonstrate that SM-3 possesses potential anti-HBV activity in vitro. This is the first report demonstrating the anti-HBV effects of S. media, which is currently under early development as a potential anti-HBV drug candidate.
Keywords: anti-hepatitis B virus activity; Stellaria media (L.) Vill.; flavonoid; polysaccharide anti-hepatitis B virus activity; Stellaria media (L.) Vill.; flavonoid; polysaccharide
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Ma, L.; Song, J.; Shi, Y.; Wang, C.; Chen, B.; Xie, D.; Jia, X. Anti-Hepatitis B Virus Activity of Chickweed [Stellaria media (L.) Vill.] Extracts in HepG2.2.15 Cells. Molecules 2012, 17, 8633-8646.

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