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Updated: Jul 9, 2025
Production and Detection of Reactive Oxygen Species ROS in Cancers
Published on: November 21, 2011
Regulation of antioxidants in cancer
Fabio Hecht1, Marco Zocchi1, Fatemeh Alimohammadi2
1Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY 14642, USA; Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY 14642, USA.
Abstract:
Scientists in this field often joke, "If you don't have a mechanism, say it's ROS." Seemingly connected to every biological process ever described, reactive oxygen species (ROS) have numerous pleiotropic roles in physiology and disease. In some contexts, ROS act as secondary messengers, controlling a variety of signaling cascades. In other scenarios, they initiate damage to macromolecules. Finally, in their worst form, ROS are deadly to cells and surrounding tissues. A set of molecules with detoxifying abilities, termed antioxidants, is the direct counterpart to ROS. Notably, antioxidants exist in the public domain, touted as a "cure-all" for diseases. Research has disproved many of these claims and, in some cases, shown the opposite. Of all the diseases, cancer stands out in its paradoxical relationship with antioxidants. Although the field has made numerous strides in understanding the roles of antioxidants in cancer, many questions remain.
Insights
Reactive oxygen species (ROS) have complex roles in health and disease, acting as signaling molecules or causing cellular damage. Antioxidants, while popularly believed to be a cure-all, have a paradoxical and incompletely understood relationship with cancer.
Area of Science:
- Biochemistry
- Cellular Biology
- Oncology
Background:
- Reactive oxygen species (ROS) are implicated in numerous physiological and pathological processes.
- ROS can function as signaling molecules or induce macromolecular damage.
- Antioxidants are compounds that counteract ROS, but their purported health benefits are often overstated.
Purpose of the Study:
- To explore the multifaceted roles of ROS in biological systems.
- To critically examine the claims surrounding antioxidant efficacy in disease.
- To highlight the complex and paradoxical relationship between antioxidants and cancer.
Main Methods:
- Literature review of ROS functions in physiology and disease.
- Analysis of scientific evidence regarding antioxidant effects.
- Focus on the specific interplay between antioxidants and cancer biology.
Main Results:
- ROS exhibit diverse functions, acting as secondary messengers or causing cellular damage.
- Many popular claims about antioxidants as a universal cure have been scientifically disproven.
- The role of antioxidants in cancer is complex and not fully elucidated, with ongoing research questions.
Conclusions:
- Understanding the dual nature of ROS is crucial for comprehending cellular processes.
- Antioxidants do not possess universal therapeutic properties and their use requires careful consideration.
- Further research is needed to clarify the intricate roles of antioxidants in cancer development and treatment.
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