Licoflavone C
Licoflavone C has cytotoxic, and antioxidative effects, it has protective effect toward the chromosome damage induced by DAU or MMC in cultured human peripheral lymphocytes. Licoflavone C exhibits a dose-dependent antagonistic activity at concentrations up to 10−4 M, but stimulates β-galactosidase expression at higher concentrations resulting in a U-shaped-like dose-response curve.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
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The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Phytother Res. 2008 Dec;22(12):1650-4.
Licoflavone C attenuates the genotoxicity of cancer drugs in human peripheral lymphocytes.[Pubmed:
18979523]
Flavonoids exhibit a wide spectrum of biological activities that can lead to beneficial effects for human health.
METHODS AND RESULTS:
The search for cytotoxic, genotoxic and/or antimutagenic natural compounds is therefore of great relevance, especially in cancer chemotherapy. In view of this, we screened the potential genotoxicity/antigenotoxicty of Licoflavone C (LFLC) - a naturally occurring prenyl-flavone extracted from Genista ephedroides - using the micronucleus (MN) assay on stimulated and cytochalasin B-blocked human lymphocytes. LFLC did not increase the spontaneous MN level up to 600 microM final concentration where a strong toxicity was seen to occur. We therefore performed an antigenotoxicity assay against the two mutagenic anticancer drugs, mitomycin C (MMC) and daunorubicin (DAU), using two non-toxic LFLC concentrations (0.1 microM and 1.0 microM). The MN frequencies induced by 0.025 microg/ml or 0.05 microg/ml DAU were significantly lowered by 45.4% or 46.6% and 41.8% or 44.8% at LFLC 0.1 and 1.0 microM, respectively. After treatment with 0.085 microg/ml or 0.17 microg/ml MMC, we detected a reduction in genotoxicity of 35.1% or 37.0% and of 38.0% or 35.8% at LFLC 0.1 and 1.0 microM, respectively.
CONCLUSIONS:
In conclusion, LFLC was proven to be protective toward the chromosome damage induced by DAU or MMC in cultured human peripheral lymphocytes.
Molecules. 2012 Jun 13;17(6):7284-93.
Antibacterial, antifungal and cytotoxic activities of two flavonoids from Retama raetam flowers.[Pubmed:
22695233]
We have investigated the antibacterial, antifungal and cytotoxic activities of two flavonoids isolated from Retama raetam flowers using the disc diffusion and micro-dilution broth methods.
METHODS AND RESULTS:
The cytotoxic activity was tested against Hep-2 cells using the MTT assay. The compounds Licoflavone C (1) and derrone (2) were active against Pseudomonas aeruginosa and Escherichia coli (7.81-15.62 μg/mL) and showed important antifungal activity.
Strong antifungal activity against Candida species (7.81 μg/mL) was for example found with compound 2. The tested compounds also showed strong cytotoxicity against Hep-2 cells.
CONCLUSIONS:
These two compounds may be interesting antimicrobial agents to be used against infectious diseases caused by many pathogens.
Arch Pharm Res. 2012 Jan;35(1):163-70.
Protection of prenylated flavonoids from Mori Cortex Radicis (Moraceae) against nitric oxide-induced cell death in neuroblastoma SH-SY5Y cells.[Pubmed:
22297755]
METHODS AND RESULTS:
Seven prenylated flavanoids, Licoflavone C (1), cyclomulberrin (2), neocyclomorusin (3), sanggenon I (4), morusin (5), kuwanon U (6) and kuwanon E (7), and three 2-arylbenzofurans, moracin P (8), moracin O (9), and mulberrofuran Q (10) were isolated from the MeOH extract of Mori Cortex Radicis. Among these, compounds 2-7 enhanced cell viability in a dose-dependent manner against sodium nitroprusside-induced cell death in neuroblastoma SH-SY5Y cells, which was measured by MTT reduction assay (EC(50) values of 4.4, 5.6, 8.0, 6.4, 8.7, and 11.9 μg/mL, respectively). Among 10 compounds, C-3 prenylated flavones (2, 3, and 5) and prenylated flavanones (4, 6, and 7) showed cell protection. However, compound 1 which lacks the prenyl group at C-3 and three 2-arylbenzofurans (8-10) did not show protective effect. The order of cell protection was as follow: C-3 prenylated flavones (2, 3, and 5) > prenylated flavanones (4, 6, and 7) > 2-arylbenzofurans (8-10) and flavone (1).
CONCLUSIONS:
From this result, we show that some prenylated flavones and flavanones might protect neuronal cells against nitrosative stress-mediated cell death. Even though further evaluations are necessary in vitro and in vivo study, we carefully suggest that some prenylated flavonoids from Mori Cortex Radicis might protect neuronal cells from neurodegenerative diseases.
