| Features: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Menadione (2-methyl-1,4-naphthoquinone, also termed vitamin K3) Menadione-induced ROS generation is concentration-dependent and high concentrations trigger cell death. Clinical trials conducted on patients with prostate cancer showed that ascorbic acid-menadione produced an immediate drop in tumor cell numbers through a mechanism named autoschizis. Menadione (Vitamin K3) is a synthetic naphthoquinone compound. It is not used as a nutritional vitamin supplement in humans due to toxicity risk (particularly hemolysis and hepatotoxicity). Historically used in animal feed. Mechanistically, menadione functions primarily as a redox-active quinone, capable of: -Undergoing redox cycling -Generating reactive oxygen species (ROS) -Inducing oxidative stress -Interacting with glutathione (GSH) systems -Modulating mitochondrial functionIt has been investigated in oncology research largely due to its pro-oxidant cytotoxic properties, not classical vitamin K–dependent clotting roles.
Time-Scale Flag (TSF): P / R / G
|
| Source: |
| Type: |
| Lipid peroxidation is a chain reaction process in which free radicals (often reactive oxygen species, or ROS) attack lipids containing carbon-carbon double bonds, especially polyunsaturated fatty acids. This attack results in the formation of lipid radicals, peroxides, and subsequent breakdown products. Lipid peroxidation can cause damage to cell membranes, leading to increased permeability and disruption of cellular functions. This damage can initiate a cascade of events that may contribute to carcinogenesis. The byproducts of lipid peroxidation, such as malondialdehyde (MDA) and 4-hydroxynonenal (4-HNE), can form adducts with DNA, leading to mutations. These mutations can disrupt normal cellular processes and contribute to the development of cancer. Lipid peroxidation damages cell membranes, disrupts cellular functions, and can trigger inflammatory responses. It is a marker of oxidative stress and is implicated in many chronic diseases. Negative Prognostic Indicator: In many cancers, high levels of lipid phosphates, particularly S1P, are associated with poor prognosis, indicating a more aggressive tumor phenotype and potential resistance to therapy. Mixed Evidence: The prognostic significance of lipid phosphates can vary by cancer type, with some studies showing that their expression may not always correlate with adverse outcomes. |
| 635- | VitC, | VitK3, | The combination of ascorbate and menadione causes cancer cell death by oxidative stress and replicative stress |
| - | in-vitro, | NA, | NA |
Query results interpretion may depend on "conditions" listed in the research papers. Such Conditions may include : -low or high Dose -format for product, such as nano of lipid formations -different cell line effects -synergies with other products -if effect was for normal or cancerous cells
Filter Conditions: Pro/AntiFlg:% IllCat:% CanType:% Cells:% prod#:230 Target#:453 State#:% Dir#:2
wNotes=0 sortOrder:rid,rpid