Abstract
Phytochemical investigations on the bulbs of Chinese onion led to the isolation of three new furostanol saponins (1, 2, 5) together with seven known furostanol saponins (3, 4, 6-10). Their chemical structures were elucidated on the basis of spectroscopic and chemical methods, including IR, MS, NMR, and GC analyses. The anti-proliferative and anti-inflammatory activities of the isolates were evaluated. Compounds 7-10 showed potential anti-proliferative activities against human cancer cell lines (HepG2, A549, SPC-A-1, MGC80-3, MDA-MB-231, SW620 and CNE-1) with IC50 values below 30 μM. Compounds 4 and 7 could induce G2/M cell-cycle arrest and apoptosis through mitochondria-mediate pathway in HepG2 cells. Compounds 7 and 10 showed strong inhibitory effects against LPS induced NO production in RAW264.7 cells with IC50 values of 2.01 ± 1.40 μM and 2.49 ± 1.54 μM, respectively.
Keywords:
Allium chinense; Anti-inflammatory activity; Anti-proliferative activity; Chinese onion; Furostanol saponins.
Copyright © 2019 Elsevier Inc. All rights reserved.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Anti-Inflammatory Agents / chemistry
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Anti-Inflammatory Agents / isolation & purification
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Anti-Inflammatory Agents / pharmacology*
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Antineoplastic Agents, Phytogenic / chemistry
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Antineoplastic Agents, Phytogenic / isolation & purification
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Antineoplastic Agents, Phytogenic / pharmacology*
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Apoptosis / drug effects*
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Cell Cycle Checkpoints / drug effects
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Cell Line
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Cell Proliferation / drug effects
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Cell Survival / drug effects
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Dose-Response Relationship, Drug
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Drug Screening Assays, Antitumor
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Hep G2 Cells
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Humans
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Lipopolysaccharides / antagonists & inhibitors
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Lipopolysaccharides / pharmacology
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Mice
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Mitochondria / drug effects*
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Mitochondria / metabolism
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Molecular Conformation
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Nitric Oxide / antagonists & inhibitors
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Nitric Oxide / biosynthesis
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Onions / chemistry*
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RAW 264.7 Cells
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Saponins / chemistry
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Saponins / isolation & purification
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Saponins / pharmacology*
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Structure-Activity Relationship
Substances
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Anti-Inflammatory Agents
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Antineoplastic Agents, Phytogenic
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Lipopolysaccharides
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Saponins
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Nitric Oxide