Cytotoxic triterpene diglycosides from the sea cucumber Stichopus horrens |
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| Authors: | Nguyen Xuan Cuong Le Thi Vien Le Hoang Tran Thi Hong Hanh Do Thi Thao Nguyen Van Thanh Nguyen Hoai Nam Do Cong Thung Phan Van Kiem Chau Van Minh |
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| Institution: | 1. Institute of Marine Biochemistry (IMBC), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam;2. Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam;3. Institute of Biotechnology, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam;4. Institute of Marine Environment and Resources (IMER), VAST, 246 Da Nang, Haiphong, Viet Nam |
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| Abstract: | Using various chromatographic separation techniques, eight triterpene diglycosides (1–8), including four new compounds namely stichorrenosides A–D (1–4), were isolated from a methanol extract of the Vietnamese sea cucumber S. horrens. Their structures were elucidated based on spectroscopic analyses, including HR ESI MS, 1D and 2D NMR. Their in vitro cytotoxic activity against five human cancer cell lines, Hep-G2 (hepatoma cancer), KB (epidermoid carcinoma), LNCaP (prostate cancer), MCF7 (breast cancer), and SK-Mel2 (melanoma), was evaluated using SRB methods. Stichorrenoside D (4), stichoposide A (5), and 3β-O-β-d-xylopyranosyl-(1→2)-β-d-xylopyranosyl]-23S-acetoxyholost-7-ene (7) showed strong cytotoxicity on all five tested cancer cell lines, whereas significant effect was observed for stichorrenoside C (3) and stichoposide B (6). |
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| Keywords: | Stichopodidae Triterpene glycoside Cytotoxicity |
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