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| Iron plays a dual and highly context-dependent role in cancer biology. It is essential for tumor proliferation due to its requirement in DNA synthesis (ribonucleotide reductase), mitochondrial respiration, and cell cycle progression. Many cancers exhibit increased iron uptake (↑ transferrin receptor, TfR1) and decreased iron export (↓ ferroportin), leading to intracellular iron accumulation that supports rapid growth. However, excess labile iron also promotes oxidative stress through Fenton chemistry (Fe²⁺ + H₂O₂ → •OH), contributing to DNA damage and genomic instability. A major therapeutic concept is ferroptosis, an iron-dependent form of regulated cell death driven by lipid peroxidation. Tumors with high iron dependency can be selectively vulnerable to ferroptosis induction. Conversely, chronic iron overload may promote tumor initiation through ROS-mediated mutagenesis and inflammatory signaling. Thus, iron sits at a metabolic intersection: -Pro-tumor when supporting proliferation and ROS-driven mutation -Anti-tumor when leveraged to trigger ferroptotic cell death Iron biology in cancer is best understood through three axes: -Iron uptake/storage/export balance -ROS and oxidative stress dynamics -Ferroptosis susceptibilityIron is a vital trace element that plays essential roles in various physiological processes. Its importance stems from its involvement in oxygen transport, energy production, DNA synthesis, and numerous enzymatic reactions. – Iron is a critical component of hemoglobin in red blood cells, enabling the binding and transport of oxygen from the lungs to tissues. – Iron participates in redox reactions due to its ability to alternate between ferrous (Fe²⁺) and ferric (Fe³⁺) states. Tumor cells often require increased iron to support their rapid proliferation and metabolic demands. – Elevated iron availability can promote DNA synthesis, cell division, and tumor growth. • Promotion of Reactive Oxygen Species (ROS) Formation: – Iron’s redox-active nature, while important for normal cell functions, can also lead to the generation of reactive oxygen species via reactions such as the Fenton reaction: Fe²⁺ + H₂O₂ → Fe³⁺ + •OH + OH⁻ – The hydroxyl radicals (•OH) produced are highly reactive and can cause oxidative damage to cellular components (DNA, proteins, lipids). – This oxidative damage may contribute to genomic instability, mutations, and the progression of cancer. Cancer cells often exhibit increased iron dependency, targeting iron metabolism is a strategy that is being explored for cancer therapy. – Approaches include the use of iron chelators to sequester iron and limit its availability to tumor cells, thereby inhibiting their growth. – Alternatively, therapies may aim to exploit iron’s capacity to generate toxic ROS beyond a threshold that cancer cells can manage, leading to selective cell death. Iron (Fe) – Cancer Pathway Matrix
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| Cytochrome c ** The term "release of cytochrome c" ** an increase in level for the cytosol. Small hemeprotein found loosely associated with the inner membrane of the mitochondrion where it plays a critical role in cellular respiration. Cytochrome c is highly water-soluble, unlike other cytochromes. It is capable of undergoing oxidation and reduction as its iron atom converts between the ferrous and ferric forms, but does not bind oxygen. It also plays a major role in cell apoptosis. The term "release of cytochrome c" refers to a critical step in the process of programmed cell death, also known as apoptosis. In its new location—the cytosol—cytochrome c participates in the apoptotic signaling pathway by helping to form the apoptosome, which activates caspases that execute cell death. Cytochrome c is a small protein normally located in the mitochondrial intermembrane space. Its primary role in healthy cells is to participate in the electron transport chain, a process that helps produce energy (ATP) through oxidative phosphorylation. Mitochondrial outer membrane permeability leads to the release of cytochrome c from the mitochondria into the cytosol. The release of cytochrome c is a pivotal event in apoptosis where cytochrome c moves from the mitochondria to the cytosol, initiating a chain reaction that leads to programmed cell death. On the one hand, cytochrome c can promote cancer cell survival and proliferation by regulating the activity of various signaling pathways, such as the PI3K/AKT pathway. This can lead to increased cell growth and resistance to apoptosis, which are hallmarks of cancer. On the other hand, cytochrome c can also induce apoptosis in cancer cells by interacting with other proteins, such as Apaf-1 and caspase-9. This can lead to the activation of the intrinsic apoptotic pathway, which can result in the death of cancer cells. Overexpressed in Breast, Lung, Colon, and Prostrate. Underexpressed in Ovarian, and Pancreatic. |
| 1762- | MF, | Fe, | Triggering the apoptosis of targeted human renal cancer cells by the vibration of anisotropic magnetic particles attached to the cell membrane |
| - | in-vitro, | RCC, | 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
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