期刊
FREE RADICAL RESEARCH
卷 44, 期 5, 页码 479-496出版社
TAYLOR & FRANCIS LTD
DOI: 10.3109/10715761003667554
关键词
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资金
- Mayo Clinic SPORE for Pancreatic Cancer [P50 CA102701]
- Mayo Clinic Breast Cancer SPORE [CA116201-03DR4]
- AACR-PANCAN [08-20-25-STOR]
- NCI [CA135102]
- Florida Department of Health [FLA07BN-08]
- NATIONAL CANCER INSTITUTE [R21CA135102, P50CA102701, P50CA116201] Funding Source: NIH RePORTER
Elevated rates of reactive oxygen species (ROS) have been detected in almost all cancers, where they promote many aspects of tumour development and progression. However, tumour cells also express increased levels of antioxidant proteins to detoxify from ROS, suggesting that a delicate balance of intracellular ROS levels is required for cancer cell function. Further, the radical generated, the location of its generation, as well as the local concentration is important for the cellular functions of ROS in cancer. A challenge for novel therapeutic strategies will be the fine tuning of intracellular ROS signalling to effectively deprive cells from ROS-induced tumour promoting events, towards tipping the balance to ROS-induced apoptotic signalling. Alternatively, therapeutic antioxidants may prevent early events in tumour development, where ROS are important. However, to effectively target cancer cells specific ROS-sensing signalling pathways that mediate the diverse stress-regulated cellular functions need to be identified. This review discusses the generation of ROS within tumour cells, their detoxification, their cellular effects, as well as the major signalling cascades they utilize, but also provides an outlook on their modulation in therapeutics.
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