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KMID : 0616120190500040245
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Korean Journal of Pharmacognosy
2019 Volume.50 No. 4 p.245 ~ p.252
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Isolation of the Constituents with Cancer Cell Growth Inhibition and Anti-inflammatory Activity from Persicaria nepalensis
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Kim Dong-Hwa
Lee Sang-Kook
Park Hee-Juhn
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Abstract
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This study was initially explored to procure biomaterials capable of inhibiting cancer cell growth from nine Persicaria species (Polygonaceae). The extract of P. nepalensis that was selected from the initial screenings was further fractionated to identify bioactive compounds. The ethyl acetate (EtOAc) fraction was shown to be the most active in the inhibition of cell growth against six cancer cell lines (IC50 value of 3.77?12.87 μg/ml). Phytochemical study led to the isolation of two galactolipids of 1,2-di-O-linolenoyl-3-O-β-D-galactospyranosyl-sn-glycerol (1) and 1-O-linolenoyl-3-O-β-D-galactospyranosyl-sn-glycerol (2) from the hexane fraction and three phenylpropanoyl sucroses of lapathoside A (3), vanicoside B (4) and lapathoside C (5) from the EtOAc fraction. These isolated compounds have not been reported from this plant. Compounds 3 and 4 exhibited the effective growth inhibition against a panel of cancer cell lines (IC50 value of 6.90?18.09 μM). In addition, the anti-inflammatory activity was evaluated to determine lipopolysaccharide (LPS)-induced nitric oxide (NO) formation in RAW264.7 mouse macrophage cells. The EtOAc fraction (IC50; 34.14 μg/ml) and its constituents, 3 (8.55 μM) and 4 (7.83 μM) were shown to be effective in the inhibition of LPS-induced NO production. Therefore, compounds 3 and 4 were considered to be active constituents for anti-inflammatory and antitumor activity from P. nepalensis.
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KEYWORD
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Persicaria nepalensis, Polygonaceae, Galactolipids, Phenylpropanoyl sucroses, Cancer cell growth, Inflammation
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