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| 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
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| Destruction of mitochondrial transmembrane potential, which is widely regarded as one of the earliest events in the process of cell apoptosis. Mitochondria are organelles within eukaryotic cells that produce adenosine triphosphate (ATP), the main energy molecule used by the cell. For this reason, the mitochondrion is sometimes referred to as “the powerhouse of the cell”. Mitochondria produce ATP through process of cellular respiration—specifically, aerobic respiration, which requires oxygen. The citric acid cycle, or Krebs cycle, takes place in the mitochondria. The mitochondrial membrane potential is widely used in assessing mitochondrial function as it relates to the mitochondrial capacity of ATP generation by oxidative phosphorylation. The mitochondrial membrane potential is a reliable indicator of mitochondrial health. In cancer cells, ΔΨm is often decreased, which can lead to changes in cellular metabolism, increased glycolysis, increased reactive oxygen species (ROS) production, and altered cell death pathways. The membrane of malignant mitochondria is hyperpolarized (−220 mV) in comparison to their healthy counterparts (−160 mV), which facilitates the penetration of positively charged molecules to the cancer cells mitochondria. The MMP is a critical indicator of mitochondrial function, directly reflecting the organelle's capacity to generate ATP through oxidative phosphorylation. |
| 1834- | VitK3, | PDT, | Effects of Vitamin K3 Combined with UVB on the Proliferation and Apoptosis of Cutaneous Squamous Cell Carcinoma A431 Cells |
| - | in-vitro, | Melanoma, | A431 |
| 1832- | VitK3, | VitC, | Vitamin K3 and vitamin C alone or in combination induced apoptosis in leukemia cells by a similar oxidative stress signalling mechanism |
| - | in-vitro, | AML, | K562 |
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
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