期刊
REDOX BIOLOGY
卷 15, 期 -, 页码 347-362出版社
ELSEVIER
DOI: 10.1016/j.redox.2017.12.012
关键词
Reactive oxygen species; Triphenylphosphonium cation; Oxidative phosphorylation; Oxidative stress; Mitochondrial inhibition
资金
- NIH NCI [U01 CA178960, R01 CA208648]
- Quadracci Endowment
- NATIONAL CANCER INSTITUTE [U01CA178960, R01CA208648] Funding Source: NIH RePORTER
- Division Of Chemistry [1532168] Funding Source: National Science Foundation
Reactive oxygen species (ROS) have been implicated in tumorigenesis (tumor initiation, tumor progression, and metastasis). Of the many cellular sources of ROS generation, the mitochondria and the NADPH oxidase family of enzymes are possibly the most prevalent intracellular sources. In this article, we discuss the methodologies to detect mitochondria-derived superoxide and hydrogen peroxide using conventional probes as well as newly developed assays and probes, and the necessity of characterizing the diagnostic marker products with HPLC and LC-MS in order to rigorously identify the oxidizing species. The redox signaling roles of mitochondrial ROS, mitochondrial thiol peroxidases, and transcription factors in response to mitochondria-targeted drugs are highlighted. ROS generation and ROS detoxification in drug-resistant cancer cells and the relationship to metabolic reprogramming are discussed. Understanding the subtle role of ROS in redox signaling and in tumor proliferation, progression, and metastasis as well as the molecular and cellular mechanisms (e.g., autophagy) could help in the development of combination therapies. The paradoxical aspects of antioxidants in cancer treatment are highlighted in relation to the ROS mechanisms in normal and cancer cells. Finally, the potential uses of newly synthesized exomarker probes for in vivo superoxide and hydrogen peroxide detection and the low-temperature electron paramagnetic resonance technique for monitoring oxidant production in tumor tissues are discussed.
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