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http://dx.doi.org/10.5352/JLS.2017.27.2.225

Biological Activities of Pharbitis nil and Partial Purification of Anticancer Agent from Its Extract  

Choi, Hyeun Deok (Department of Microbiology & Immunology, Busan National University School of Medicine)
Yu, Sun Nyoung (Department of Microbiology & Immunology, Busan National University School of Medicine)
Park, Sul-Gi (Department of Microbiology & Immunology, Busan National University School of Medicine)
Kim, Young Wook (Department of Microbiology & Immunology, Busan National University School of Medicine)
Nam, Hyo Won (Department of Microbiology & Immunology, Busan National University School of Medicine)
An, Hyun Hee (Department of Microbiology & Immunology, Busan National University School of Medicine)
Kim, Sang Hun (Department of Microbiology & Immunology, Busan National University School of Medicine)
Kim, Kwang-Youn (Department of Herbal Formula, Medical Research Center (MRCGHF), College of Oriental Medicine, Daegu Haany University)
Ahn, Soon Cheol (Department of Microbiology & Immunology, Busan National University School of Medicine)
Publication Information
Journal of Life Science / v.27, no.2, 2017 , pp. 225-232 More about this Journal
Abstract
This study aimed to evaluate several biological activities of Pharbitis nil and to isolate an anticancer agent from its methanol extract. Pharbitis nil seeds were extracted with methanol (PNM). Then, PNM was fractionated into solvent layers such as ethyl acetate fraction (PNE), butanol fraction (PNB), and water fraction (PNW). The biological activities of the fractions were analyzed for tyrosinase inhibition, lipase inhibition, DPPH-free radical scavenging, and cell growth inhibition. PNM showed strong growth inhibition of prostate cancer PC-3 cells. PNM was subjected to Diaion HP-20 and eluted stepwise with 50%, 80%, and 100% methanol. Then, for activity-guided fraction, each fraction was analyzed for growth inhibition of prostate cancer PC-3 cells by using an MTT assay. Because the 100% fraction showed significantly strong inhibitory activity, the fraction was further separated in the reverse phase C18, which was eluted with 80% and 90% methanol. The 90% fraction was further subjected to Sephadex LH-20 using a mobile solvent of 100% methanol. Finally, the compound PN was partially purified for HPLC analysis. PN showed cell growth inhibitory activity and induced the apoptosis and cell cycle arrest of prostate cancer PC-3 cells, as measured by flow cytometry. The results together suggest that Pharbitis nil possesses various biological activities, especially the inhibitory activity for the proliferation of prostate cancer PC-3 cells, suggesting the possibility of its use as an anticancer agent.
Keywords
Biological activity; compound PN; Pharbitis nil; proliferation; purification;
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