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http://dx.doi.org/10.4062/biomolther.2015.019

Anti-Influenza Activity of Betulinic Acid from Zizyphus jujuba on Influenza A/PR/8 Virus  

Hong, Eun-Hye (Laboratory of Microbiology and Immunology, College of Pharmacy, Kangwon National University)
Song, Jae Hyoung (Laboratory of Microbiology and Immunology, College of Pharmacy, Kangwon National University)
Kang, Kyo Bin (Laboratory of Pharmacognosy, College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University)
Sung, Sang Hyun (Laboratory of Pharmacognosy, College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University)
Ko, Hyun-Jeong (Laboratory of Microbiology and Immunology, College of Pharmacy, Kangwon National University)
Yang, Heejung (Laboratory of Natural Products Chemistry, College of Pharmacy, Kangwon National University)
Publication Information
Biomolecules & Therapeutics / v.23, no.4, 2015 , pp. 345-349 More about this Journal
Abstract
Betulinic acid, a pentacyclic triterpene isolated from Jujube tree (Zizyphus jujuba Mill), has been known for a wide range of biological and medicinal properties such as antibacterial, antimalarial, anti-inflammatory, antihelmintic, antinociceptive, and anticancer activities. In the study, we investigated the antiviral activity on influenza A/PR/8 virus infected A549 human lung adenocarcinoma epithelial cell line and C57BL/6 mice. Betulinic acid showed the anti-influenza viral activity at a concentration of $50{\mu}M$ without a significant cytotoxicity in influenza A/PR/8 virus infected A549 cells. Also, betulinic acid significantly attenuated pulmonary pathology including increased necrosis, numbers of inflammatory cells and pulmonary edema induced by influenza A/PR/8 virus infection compared with vehicle- or oseltamivir-treated mice in vivo model. The down-regulation of IFN-${\gamma}$ level, which is critical for innate and adaptive immunity in viral infection, after treating of betulinic acid in mouse lung. Based on the obtained results, it is suggested that betulinic acid can be the potential therapeutic agent for virus infection via anti-inflammatory activity.
Keywords
Betulinic acid; Zizyphus jujuba; Influenza A/PR/8; A549; Inflammation;
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