"Double-edged sword" effect of reactive oxygen species (ROS) in tumor development and carcinogenesis

Area of Science:

• Biochemistry
• Cell Biology
• Oncology

Background:

• Reactive oxygen species (ROS) are critical signaling molecules involved in cellular metabolism.
• ROS play a complex, concentration-dependent role in tumor cell proliferation and inhibition.
• The dual effect of ROS on tumors, often termed a "double-edged sword," necessitates detailed investigation.

Approach:

• This review synthesizes current research on the bidirectional regulatory mechanisms of ROS in tumor development.
• Key signaling pathways and regulatory factors influenced by ROS in tumorigenesis are analyzed.
• The study focuses on understanding the intricate effects of ROS on cancer cells.

Key Points:

• Low ROS concentrations can enhance tumor cell proliferation, invasion, and damage biomacromolecules.
• High ROS concentrations can induce oxidative stress, promoting apoptosis and autophagy in tumor cells, thereby enhancing antitumor responses.
• ROS signaling pathways are crucial for both promoting and inhibiting tumor progression.

Conclusions:

• ROS exhibit a unique bidirectional regulatory role in tumor cell behavior.
• Elucidating ROS mechanisms offers potential for novel clinical applications in cancer treatment.
• Further research into ROS signaling is vital for advancing cancer therapy strategies.