Location
Suwanee, GA
Start Date
17-4-2026 12:00 PM
End Date
17-4-2026 1:00 PM
Description
Introduction
Human fibrosarcoma is a malignant tumor arising from connective tissues, affecting structures such as muscle, adipose tissue, tendons, ligaments, and blood vessels. HT-1080 cells, derived from a 35-year-old male patient, serves as an in vitro model to investigate oxidative stress mediated cytotoxicity. Reactive oxygen species (ROS) are natural by-products of cellular metabolism, generated during mitochondrial respiration and other oxidation/reduction (Redox) reactions. At regulated levels, ROS play key roles in signaling and homeostasis; however, excess ROS damages proteins, lipids, and DNA through oxidative reactions that alter their structure and function, contributing to inflammation, disease progression, and cell death. Cancer cells may be particularly vulnerable to ROS overload due to elevated baseline oxidative stress from mutations and rapid metabolism, making them selectively sensitive to prooxidant treatments.
Methods
This study examines whether high concentrations of ascorbate (vitamin C) combined with ferric chloride (FeCl₃) induce ROS in HT-1080 cells. Ascorbate can act as a pro-oxidant in the presence of transition metals, promoting hydrogen peroxide formation and, thereby the increased production of hydroxyl radicals through H₂O₂ interactions with ferrous iron. Intracellular ROS levels will be quantified using a fluorometric ROS assay, measuring fluorescence as an indicator of oxidative stress. Additional redox modulators may be used to validate ROS dependent mechanisms.
Results
We expect that treatment with vitamin C and iron will increase ROS fluorescence in HT-1080 cells in a dose-dependent manner. Antioxidant treatments, such as N-acetylcysteine, are anticipated to reduce ROS levels, confirming the ROS dependent mechanism. Cells treated with the combination of vitamin C and iron may also show decreased viability compared to single treatments or controls, indicating that ROS overload can selectively induce cancer cell death. Studies are ongoing.
Discussion
We hypothesize that combining high dose vitamin C with FeCl₃ will generate sufficient oxidative stress to overwhelm HT-1080 cellular defenses, leading to cell death. The enhanced susceptibility of cancer cells due to their preexisting oxidative burden may make them selectively vulnerable to this prooxidant.
Embargo Period
6-1-2027
Comparative Analysis of Ascorbate Acid and Iron-Induced ROS in HT-1080 Fibrosarcoma Cells
Suwanee, GA
Introduction
Human fibrosarcoma is a malignant tumor arising from connective tissues, affecting structures such as muscle, adipose tissue, tendons, ligaments, and blood vessels. HT-1080 cells, derived from a 35-year-old male patient, serves as an in vitro model to investigate oxidative stress mediated cytotoxicity. Reactive oxygen species (ROS) are natural by-products of cellular metabolism, generated during mitochondrial respiration and other oxidation/reduction (Redox) reactions. At regulated levels, ROS play key roles in signaling and homeostasis; however, excess ROS damages proteins, lipids, and DNA through oxidative reactions that alter their structure and function, contributing to inflammation, disease progression, and cell death. Cancer cells may be particularly vulnerable to ROS overload due to elevated baseline oxidative stress from mutations and rapid metabolism, making them selectively sensitive to prooxidant treatments.
Methods
This study examines whether high concentrations of ascorbate (vitamin C) combined with ferric chloride (FeCl₃) induce ROS in HT-1080 cells. Ascorbate can act as a pro-oxidant in the presence of transition metals, promoting hydrogen peroxide formation and, thereby the increased production of hydroxyl radicals through H₂O₂ interactions with ferrous iron. Intracellular ROS levels will be quantified using a fluorometric ROS assay, measuring fluorescence as an indicator of oxidative stress. Additional redox modulators may be used to validate ROS dependent mechanisms.
Results
We expect that treatment with vitamin C and iron will increase ROS fluorescence in HT-1080 cells in a dose-dependent manner. Antioxidant treatments, such as N-acetylcysteine, are anticipated to reduce ROS levels, confirming the ROS dependent mechanism. Cells treated with the combination of vitamin C and iron may also show decreased viability compared to single treatments or controls, indicating that ROS overload can selectively induce cancer cell death. Studies are ongoing.
Discussion
We hypothesize that combining high dose vitamin C with FeCl₃ will generate sufficient oxidative stress to overwhelm HT-1080 cellular defenses, leading to cell death. The enhanced susceptibility of cancer cells due to their preexisting oxidative burden may make them selectively vulnerable to this prooxidant.