Menadione
Menadione (vitamin K3), used as a nutritional supplement, is an inhibitor of mitochondrial DNA polymerase γ (pol γ), with an IC 50 value of 6 µM [1].
Pol γ is responsible for all aspects of mitochondrial DNA synthesis, including all replication, recombination of the mitochondrial genome, and repair of mitochondrial DNA damage [1].
In the extract of mitochondrion fraction from HCT116 (p53+/+ and p53–/–) cells, menadione at 30 μM inhibited pol γ by more than 80%. In HCT116 cells, 30 μM menadione also caused impairment of mitochondrial DNA replication and repair, and triggered a significant increase in reactive oxygen species (ROS), leading to apoptosis. At a lower concentration of 3 μM, menadione did not significantly increase the ROS level, but was able to effectively inhibit cancer cell proliferation, which could be reversed by supplementing glycolytic substrates [2].
In Emory mice, menadione at a low non-toxic dose of 0.12% (w/w), used as a dietary supplement for 10 to 12 weeks, caused early signs of cataract, such as prominent anterior suture, in 68% of the Emory mice [3].
References:
[1]. Mizushina Y, Yonezawa Y, Yoshida H. Selective inhibition of animal DNA polymerases by fat-soluble vitamins A, D, E and K and their related compounds. Current Enzyme Inhibition, 2007, 3(1): -.
[2]. Sasaki R, Suzuki Y, Yonezawa Y, et al. DNA polymerase gamma inhibition by vitamin K3 induces mitochondria-mediated cytotoxicity in human cancer cells. Cancer Science, 2008, 99(5): 1040-1048.
[3]. Bhuyan D K, Huang X, Kuriakose G, et al. Menadione-induced oxidative stress accelerates onset of Emory mouse cataract in vivo. Current eye research, 1997.
| Physical Appearance | A solid |
| Storage | Store at -20°C |
| M.Wt | 172.18 |
| Cas No. | 58-27-5 |
| Formula | C11H8O2 |
| Solubility | insoluble in H2O; ≥5.15 mg/mL in DMSO; ≥9.86 mg/mL in EtOH with ultrasonic |
| Chemical Name | 2-methylnaphthalene-1,4-dione |
| SDF | Download SDF |
| Canonical SMILES | CC1=CC(=O)C2=CC=CC=C2C1=O |
| Shipping Condition | Small Molecules with Blue Ice, Modified Nucleotides with Dry Ice. |
| General tips | We do not recommend long-term storage for the solution, please use it up soon. |
| Cell experiment:[1] | |
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Cell lines |
HCT116 p53+/+ and p53–/– cells |
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Reaction Conditions |
3 or 30 μM menadione for 24 h incubation |
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Applications |
Menadione at 30 μM inhibited DNA polymerase γ by more than 80%, caused impairment of mitochondrial DNA replication and repair, and induced a significant increase in reactive oxygen species (ROS), leading to apoptosis. At a lower concentration (3 μM), menadione did not cause a significant increase in ROS, but was able to effectively inhibit cell proliferation, which could be reversed by supplementing glycolytic substrates. |
| Animal experiment:[2] | |
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Animal models |
Four-week-old Emory mice |
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Dosage form |
0.04%, 0.12% and 0.4% (w/w) menadione mixed with freshly ground Purina Rodent Lab Chow 5001 By oral route for 10 to 12 weeks |
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Applications |
In Emory mice, menadione at a low non-toxic dose (0.12%, w/w), used as a dietary supplement for 10 to 12 weeks, caused early signs of cataract, such as prominent anterior suture, in 68% of the Emory mice. |
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Note |
The technical data provided above is for reference only. |
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References: 1. Sasaki R, Suzuki Y, Yonezawa Y, et al. DNA polymerase gamma inhibition by vitamin K3 induces mitochondria-mediated cytotoxicity in human cancer cells. Cancer Science, 2008, 99(5): 1040-1048. 2. Bhuyan DK, Huang X, Kuriakose G, et al. Menadione-induced oxidative stress accelerates onset of Emory mouse cataract in vivo. Current eye research, 1997, 16(6): 519-526. |
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