Noncoding RNAs Controlling Oxidative Stress in Cancer

Area of Science:

• Oncology
• Molecular Biology
• Immunology

Background:

• Mitochondria in cancer cells produce excess reactive oxygen species (ROS), creating a cycle with genomic instability.
• Noncoding RNAs play a crucial role in regulating mitochondrial ROS and antioxidant expression within the tumor microenvironment.
• Immune cells, like cytotoxic T cells and macrophages, modulate ROS levels, influencing tumor growth and immune responses.

Purpose of the Study:

• To review the multifaceted roles of noncoding RNAs in regulating mitochondrial ROS production in cancer.
• To explore how noncoding RNAs influence the metabolic reprogramming of immune cells concerning ROS release.
• To examine the impact of noncoding RNA-containing microvesicles on intercellular communication and immune cell phenotypes in cancer.

Main Methods:

• Literature review focusing on noncoding RNAs, mitochondrial ROS, and cancer biology.
• Analysis of noncoding RNA regulation of antioxidant expression and immune cell metabolism.
• Investigation of microvesicle-mediated intercellular communication involving noncoding RNAs.

Main Results:

• Noncoding RNAs regulate mitochondrial ROS production and antioxidant expression, impacting the tumor microenvironment.
• Noncoding RNAs are involved in the metabolic reprogramming of immune cells, influencing their ROS release and function.
• Noncoding RNA-loaded microvesicles mediate cell-to-cell communication, potentially shifting immune cells towards a pro-oncogenic phenotype.

Conclusions:

• Noncoding RNAs exhibit complex, often opposing, effects on oxidative stress and tumor growth through various mechanisms.
• Interactions between noncoding RNAs and their shared functions suggest that targeting a single noncoding RNA may be insufficient.
• Further validation of noncoding RNA interactions across different cancer types and stages is essential for therapeutic development.