Iron Dependence
Iron Dependence - Related Videos
08:45
Quantitating Iron Transport Across the Mouse Placenta In Vivo Using Nonradioactive Iron Isotopes
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Cited by 3 •
2022
This article demonstrates how to prepare and administer transferrin-bound nonradioactive isotopic iron for studies of iron transport in mouse pregnancy. The approach for quantifying isotopic iron in fetoplacental compartments is also described.
03:40
Temperature Dependence - Instructor Prep
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2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Preparation of 0.5 M Fe(NO3)3Expand Here, we show the preparation of a solution for 10 students working in pairs, with some excess. Please adjust quantities as needed. To set up for this lab experiment, wear the appropriate personal protective equipment, including a lab coat, chemical splash goggles, and gloves Prepare 250 mL of a 0.5 M aqueous solution of iron (III) nitrate. Measure out 50.5 g of iron nitrate...
10:50
Temperature Dependence - Student Protocol
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2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Temperature Dependent Decomposition of Hydrogen PeroxideExpand We suggest that students work in pairs for this experiment. Equipment controls may vary. In this lab, you'll perform a decomposition reaction where a single compound breaks down into two or more simpler products. You will observe the decomposition of hydrogen peroxide into water and oxygen. This decomposition happens very slowly, so you will use iron (III) nitrate as a...
03:06
Culturing Mycobacterium tuberculosis Under Iron-Limited Conditions
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2025
Source: Gupta, S., et al. Isolation and Characterization of Extracellular Vesicles Produced by Iron-limited Mycobacteria. J. Vis. Exp. (2019)This video demonstrates the procedure for culturing Mycobacterium tuberculosis under iron-limited conditions to induce iron stress and promote the secretion of siderophores that support bacterial survival.
06:37
Staphylococcus aureus Growth using Human Hemoglobin as an Iron Source
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Cited by 31 •
2013
Here we describe a growth assay for Staphylococcus aureus using hemoglobin as the sole source of available nutrient iron. This assay establishes the role of bacterial factors involved in hemoglobin-derived iron acquisition.
FAQs
Transferrin uptake and ferritin storage help regulate how much iron remains available for cellular use. Iron is incorporated into enzymes supporting DNA replication and mitochondrial respiration, while excess unbound iron can promote lipid peroxidation. This balance links iron handling to both proliferation and cell injury in tumors.
Rapidly growing cancer cells can increase iron acquisition because they need a sustained supply for replication and energy production. This heightened demand may create an iron dependence that researchers can target experimentally, making iron handling a potential metabolic vulnerability when developing cancer therapies intended to disrupt tumor growth.
Excess free iron can push cells toward ferroptosis by driving lipid peroxidation, a damaging oxidation of membrane lipids. This mechanism matters because strategies that alter iron availability or storage may do more than slow iron-requiring processes; they may also trigger a distinct form of cell injury. In cancer research, ferroptosis therefore represents a potential intervention route.
Researchers can probe this dependency through complementary interventions: reducing available iron, changing how cells store it, or applying ferroptosis-based strategies. Comparing cellular responses across these approaches can help connect iron handling with tumor metabolism and identify which vulnerability is being tested. These approaches represent research directions rather than a single standardized protocol.
Studies of iron dependence may produce two especially useful outcomes: candidate biomarkers and therapeutic strategies. Biomarkers could help indicate which tumors are particularly associated with altered iron handling, while interventions aim to disrupt tumor metabolism. Because iron also supports normal cellular functions, researchers must consider how to affect cancer cells while limiting damage to normal tissues.
It connects nutrient handling with the demands of malignant growth. Iron supports enzymes involved in DNA synthesis and mitochondrial respiration, processes that can sustain proliferation and energy production. At the same time, excess iron can cause lipid peroxidation and ferroptosis. This dual role makes iron dependence relevant both to tumor biology and to treatment design.