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Updated: May 12, 2026
11:56
A Rapid and Specific Microplate Assay for the Determination of Intra- and Extracellular Ascorbate in Cultured Cells
Published on: April 11, 2014
Mitochondria, Energy and Cancer: The Relationship with Ascorbic Acid
Michael J González1, Glorivee Rosario-Pérez, Angélica M Guzmán
1School of Pharmacy, Department of Pharmacy Practice.
Summary
Ascorbic Acid (AA) shows dual effects on cancer, acting as an antioxidant at low doses and a pro-oxidant at high doses. This concentration-dependent action influences cancer cell apoptosis and ATP production, potentially explaining varied research outcomes.
Area of Science:
- Biochemistry
- Cell Biology
- Cancer Research
Background:
- Ascorbic Acid (AA) has demonstrated potential in cancer prevention and treatment.
- Mitochondria are key cellular targets for AA, influencing cancer development and progression.
- Mitochondria regulate apoptosis and oxidative species crucial for gene expression.
Purpose of the Study:
- To investigate the dual role of Ascorbic Acid (AA) in cancer therapy.
- To elucidate the concentration-dependent effects of AA on cancer cells, focusing on mitochondrial activity.
- To reconcile contradictory findings regarding AA's efficacy in cancer treatment.
Main Methods:
- Analysis of Ascorbic Acid's effects on mitochondrial ATP production.
- Assessment of AA-induced apoptosis in tumor cell lines.
- Evaluation of AA's antioxidant and pro-oxidant properties at varying concentrations.
Main Results:
- High concentrations of AA enhance mitochondrial electron flux and ATP production.
- High AA concentrations induce apoptotic cell death in tumor cells via pro-oxidant effects.
- Low concentrations of AA exhibit antioxidant properties, potentially inhibiting oxidant-induced apoptosis.
Conclusions:
- The concentration-dependent activity of Ascorbic Acid is critical to its biological effects.
- AA's dual action (antioxidant vs. pro-oxidant) on mitochondria may explain its varied outcomes in cancer research.
- Understanding these mechanisms can optimize AA's therapeutic application in oncology.
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