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Updated: May 24, 2025

Production and Detection of Reactive Oxygen Species ROS in Cancers
Published on: November 21, 2011
The Two Faces of Reactive Oxygen Species in Cancer
Colleen R Reczek1,2, Navdeep S Chandel1,2
1Department of Medicine, Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611.
Abstract:
Reactive oxygen species (ROS), now appreciated for their cellular signaling capabilities, have a dual role in cancer. On the one hand, ROS can promote protumorigenic signaling, facilitating cancer cell proliferation, survival, and adaptation to hypoxia. On the other hand, ROS can promote antitumorigenic signaling and trigger oxidative stress-induced cancer cell death. To hyperactivate the cell signaling pathways necessary for cellular transformation and tumorigenesis, cancer cells increase their rate of ROS production compared with normal cells. Concomitantly, in order to maintain ROS homeostasis and evade cell death, cancer cells increase their antioxidant capacity. Compared with normal cells, this altered redox environment of cancer cells may increase their susceptibility to ROS-manipulation therapies. In this review, we discuss the two faces of ROS in cancer, the potential mechanisms underlying ROS signaling, and the opposing cancer therapeutic approaches to targeting ROS.
Insights
Reactive oxygen species (ROS) have a dual role in cancer, promoting tumor growth or triggering cell death. Cancer cells
Area of Science:
- Oncology
- Cell Biology
- Biochemistry
Background:
- Reactive oxygen species (ROS) are increasingly recognized for their roles in cellular signaling.
- ROS exhibit a dual role in cancer, influencing both tumor promotion and suppression.
- Cancer cells possess an altered redox environment compared to normal cells.
Purpose of the Study:
- To review the multifaceted roles of ROS in cancer.
- To explore the mechanisms of ROS signaling in tumorigenesis.
- To discuss therapeutic strategies targeting ROS in cancer treatment.
Main Methods:
- Literature review of studies on ROS in cancer.
- Analysis of ROS production and antioxidant capacity in cancer cells.
- Examination of ROS-based cancer therapies.
Main Results:
- Cancer cells increase ROS production to support proliferation and survival.
- Elevated antioxidant capacity in cancer cells helps maintain redox homeostasis.
- The altered redox state of cancer cells presents vulnerabilities for ROS-manipulation therapies.
Conclusions:
- ROS signaling is critical in cancer development and progression.
- Targeting ROS offers potential therapeutic avenues for cancer treatment.
- Understanding the dual role of ROS is key to developing effective cancer therapies.
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