ROS homeostasis and metabolism: a dangerous liason in cancer cells.
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TLDR
How the mitochondria has a key role in regulating the interplay between redox homeostasis and metabolism within tumor cells is described, and the potential therapeutic use of agents that directly or indirectly block metabolism is discussed.Abstract:
Tumor cells harbor genetic alterations that promote a continuous and elevated production of reactive oxygen species. Whereas such oxidative stress conditions would be harmful to normal cells, they facilitate tumor growth in multiple ways by causing DNA damage and genomic instability, and ultimately, by reprogramming cancer cell metabolism. This review outlines the metabolic-dependent mechanisms that tumors engage in when faced with oxidative stress conditions that are critical for cancer progression by producing redox cofactors. In particular, we describe how the mitochondria has a key role in regulating the interplay between redox homeostasis and metabolism within tumor cells. Last, we will discuss the potential therapeutic use of agents that directly or indirectly block metabolism.read more
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Reactive oxygen species (ROS) homeostasis and redox regulation in cellular signaling
TL;DR: This review focuses on the molecular mechanisms through which ROS directly interact with critical signaling molecules to initiate signaling in a broad variety of cellular processes, such as proliferation and survival, ROS homeostasis and antioxidant gene regulation, mitochondrial oxidative stress, apoptosis, and aging.