Oxidative Stress and Reactive Oxygen Species in Tumor Initiation and Progression

Abstract

Oxidative stress and reactive oxygen species (ROS) have gained significant attention as key players in the initiation and progression of various cancers. The imbalance between ROS production and the body's antioxidant defenses creates a cellular environment conducive to genetic mutations, inflammation, and alterations in cellular signaling pathways. This paper explores the role of oxidative stress and ROS in tumorigenesis, examining how they contribute to DNA damage, genomic instability, and the activation of oncogenes. Moreover, we discuss the complex relationship between ROS and tumor progression, emphasizing their influence on angiogenesis, metastasis, and resistance to therapy. Furthermore, the potential of antioxidant strategies and ROS-targeting therapies for cancer prevention and treatment are explored. This review highlights the necessity of understanding the molecular mechanisms through which oxidative stress and ROS influence cancer development, with the goal of identifying novel therapeutic targets and improving clinical outcomes.