Oxidative Stress and Age-Related Tumors

Area of Science:

• Biochemistry
• Molecular Biology
• Gerontology

Background:

• Oxidative stress arises from an imbalance between reactive oxygen and nitrogen species (RONS) and antioxidant defenses.
• It contributes significantly to cellular damage during aging, affecting DNA, lipids, proteins, and mitochondria.
• This damage increases susceptibility to age-related diseases, including cancer.

Purpose of the Study:

• To elucidate the molecular and cellular mechanisms linking oxidative stress, aging, and cancer.
• To highlight the roles of RONS and antioxidants in cellular senescence, immunity, and antitumor responses.
• To discuss the dual role of reactive oxygen species (ROS) in disease and cancer therapy.

Main Methods:

• Literature review and synthesis of existing research on oxidative stress, aging, and cancer.
• Analysis of molecular and cellular pathways involved in RONS production and antioxidant defense.
• Examination of the impact of oxidative stress on genetic and epigenetic alterations relevant to tumorigenesis.

Main Results:

• Oxidative stress promotes cellular senescence, immune dysfunction, and age-related pathologies like cancer.
• Oxidative stress-induced DNA damage and epigenetic modifications are critical in cancer initiation and progression.
• Antioxidants from diet and exercise can influence cellular senescence, immunity, and antitumor responses.

Conclusions:

• Oxidative stress is a central mechanism linking aging and cancer development.
• Understanding the dual role of ROS is crucial for both disease prevention and therapeutic strategies.
• Managing oxidative stress is vital for promoting healthy aging and mitigating cancer risk.