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NRF2 and cancer: the good, the bad and the importance of context
Michael B Sporn1, Karen T Liby
1Department of Pharmacology, Dartmouth Medical School, Hanover, New Hampshire 03755, USA. e-michael.sporn@dartmouth.edu
Abstract:
Many studies of chemopreventive drugs have suggested that their beneficial effects on suppression of carcinogenesis and many other chronic diseases are mediated through activation of the transcription factor NFE2-related factor 2 (NRF2). More recently, genetic analyses of human tumours have indicated that NRF2 may conversely be oncogenic and cause resistance to chemotherapy. It is therefore controversial whether the activation, or alternatively the inhibition, of NRF2 is a useful strategy for the prevention or treatment of cancer. This Opinion article aims to rationalize these conflicting perspectives by critiquing the context dependence of NRF2 functions and the experimental methods behind these conflicting data.
Insights
The transcription factor NRF2 (NFE2-related factor 2) shows dual roles in cancer, potentially hindering or aiding treatment. Understanding NRF2
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- The transcription factor NRF2 (NFE2-related factor 2) is implicated in chemoprevention and chronic disease suppression.
- Recent studies suggest NRF2 may promote oncogenesis and chemotherapy resistance in human tumors.
Approach:
- Critically evaluate conflicting data on NRF2's role in cancer.
- Analyze the context-dependent functions of NRF2.
- Examine experimental methodologies contributing to divergent findings.
Key Points:
- NRF2 activation is linked to beneficial effects in chemoprevention.
- Conversely, NRF2 can act as an oncogene, promoting tumor growth and drug resistance.
- The dual role of NRF2 highlights the complexity of targeting it for cancer therapy.
Conclusions:
- The therapeutic strategy for NRF2 in cancer requires careful consideration of its context-dependent roles.
- Further research is needed to reconcile conflicting data and clarify NRF2's precise function in different cancer types.
- Rationalizing NRF2's dual function is crucial for developing effective cancer prevention and treatment strategies.
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