Reactive oxygen species (ROS)--induced genetic and epigenetic alterations in human carcinogenesis

Area of Science:

• Oncology
• Molecular Biology
• Biochemistry

Background:

• Cancer is a complex, multistage disease driven by molecular alterations.
• Gene expression changes, regulated by genetic and epigenetic factors, are crucial in cancer development.
• Oxidative stress occurs when reactive oxygen species (ROS) overwhelm cellular antioxidant defenses.

Purpose of the Study:

• To review the current understanding of reactive oxygen species (ROS)-induced oxidative stress.
• To elucidate the role of oxidative stress in altering genetic and epigenetic mechanisms in human carcinogenesis.

Main Methods:

• Literature review of existing research on oxidative stress and cancer.
• Analysis of studies investigating the interplay between ROS, genetic alterations, and epigenetic modifications.
• Synthesis of current knowledge on oxidative stress in cancer initiation, promotion, and progression.

Main Results:

• Oxidative stress influences both genetic and epigenetic pathways involved in cancer.
• ROS accumulation can trigger molecular cascades that promote carcinogenesis.
• Altered gene expression due to oxidative stress is implicated across all stages of cancer development.

Conclusions:

• Reactive oxygen species (ROS)-induced oxidative stress is a significant factor in human cancer development.
• Understanding these molecular mechanisms is crucial for developing targeted cancer therapies.
• Further research is needed to fully elucidate the complex interactions between oxidative stress and carcinogenesis.