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Development of a total flavonoids extract of Artemisia Rupestris L. via nanotechnology and its antiviral effect In Vitro
Journal article   Open access   Peer reviewed

Development of a total flavonoids extract of Artemisia Rupestris L. via nanotechnology and its antiviral effect In Vitro

H. Hamulati, S. Chen, Z. Gu, Y. Sun and T. Wang
Infectious Diseases Research, Vol.1(2)
2020
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Abstract

Objective: We aimed to develop a novel Artemisia rupestris L. flavonoid nano-encapsulation (AFN) preparation and evaulate its anti-hepatitis B virus (HBV) activityin vitro. Methods: First, the AFN was prepared using polylactic-co-glycolic acid (PLGA). Then, after verification of the AFN, in vitro anti-virus assays were conducted by: (1) assessing the inhibitory effect of AFN on the secretion of hepatitis B surface antigens (HBsAg), hepatitis Be-antigens (HBeAg), and the replication of HBV DNAin HepG2.2.15 cells; (2) analyzing the influence of AFN on the activation rate of NF-κB positive cells; and (3) evaluating the effect of AFN on the function of glutathione peroxidase (GSH-PX) enzymes located onthe HepG2.2.15 cell membrane. Results: Compared to the original total flavonoids extract of Artemisia rupestris L. (withoutnano-encapsulation), AFN preparation under the maximum non-toxic concentration effectively inhibited the secretion of HBsAg, HBeAg, and HBV DNA from HepG2.2.15 cells. At the same time, AFN preparation promoted not only the activation rate of NF-κB positive cells, but also antiviral GSH-PX enzyme function. In conclusion, nano-encapsulation of the flavonoids extract of Artemisia rupestris L. showed an enhanced anti-HBV effect in vitro compared to the original total flavonoids extract (without nano-encapsulation); therefore, nano-encapsulation has great potential for the development of a novel antiviral herbal medicine preparation with improved efficacy.

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