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Isolation and Immunomodulatory Effect of Homoisoflavones and Flavones from Agave sisalana Perrine ex Engelm.
Graduate Institute of Pharmacy, Taipei Medical University, 250 Wu Xin Street, Taipei 11031, Taiwan
Institute of Life Science, Fu-Jen University; 510 Chung Cheng Rd, Hsinchuang, Taipei 24205, Taiwan
Tsutzki Institute for Traditional Medicine, China Medical University, 91 Hsueh Shih Road, Taichung 40402, Taiwan
Agricultural Biotechnology Research Center, Academia Sinica, 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan
* Authors to whom correspondence should be addressed.
Received: 2 April 2009; in revised form: 29 April 2009 / Accepted: 30 April 2009 / Published: 12 May 2009
Abstract: Three known flavones and seven known homoisoflavonoids were isolated from the methanolic extract of the leaves of Agave sisalanaPerrine ex Engelm. Their structures were elucidated on the basis of spectroscopic analysis. The isolated compounds were also evaluated for immunopharmacological activity. PBMC were used as target cells, and cell proliferation was determined by 3H-thymidine uptake. (±)-3,9-Dihydroeucomin (4), dihydrobonducellin (5), and 5,7-dihydroxy-3-(4′-hydroxybenzyl)-4-chromanone (7) showed inhibitory effects on PBMC proliferation activated by PHA with IC50 values 19.4, 73.8, and 58.8 µM, respectively. All three compounds significantly inhibited the production of IL-2 and IFN-γ in activated PBMC in a concentration-dependent manner.
Keywords: Agave sisalana Perrine ex Engelm.; homoisoflavonoid; PBMC; IL-2; IFN-γ
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MDPI and ACS Style
Chen, P.Y.; Kuo, Y.C.; Chen, C.H.; Kuo, Y.H.; Lee, C.K. Isolation and Immunomodulatory Effect of Homoisoflavones and Flavones from Agave sisalana Perrine ex Engelm.. Molecules 2009, 14, 1789-1795.
Chen PY, Kuo YC, Chen CH, Kuo YH, Lee CK. Isolation and Immunomodulatory Effect of Homoisoflavones and Flavones from Agave sisalana Perrine ex Engelm.. Molecules. 2009; 14(5):1789-1795.
Chen, Pi Yu; Kuo, Yuh Chi; Chen, Chin Hui; Kuo, Yueh Hsiung; Lee, Ching Kuo. 2009. "Isolation and Immunomodulatory Effect of Homoisoflavones and Flavones from Agave sisalana Perrine ex Engelm.." Molecules 14, no. 5: 1789-1795.