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Updated: Apr 18, 2026

Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter
Published on: March 27, 2020
[When defense becomes dangerous--transcription factor Nrf2 and cancer]
Adam Krysztofiak1, Violetta Krajka-Kuźniak1
1Katedra Biochemii Farmaceutycznej Uniwersytetu Medycznego im. Karola Marcinkowskiego w Poznaniu.
Abstract:
The transcription factor Nrf2 controls the expression of genes encoding cytoprotective enzymes and proteins. Its activation is related to conformational changes in the inhibitory protein Keap1 and/or Nrf2 phosphorylation by upstream kinases. Activation of Nrf2 can lead to the induction of phase II enzymes responsible for the inactivation of potential carcinogens. This may constitute an important strategy of chemoprevention. Moreover, these enzymatic systems participating in the biotransformation of drugs can reduce their therapeutic effects, contributing to drug resistance. For this reason, a clear understanding of the role of Nrf2 is essential to assess the beneficial and adverse effects of its up-regulation, particularly in relation to the prevention and treatment of cancer. This article summarizes the current state of knowledge on the significance of Nrf2 in tumorigenesis.
Insights
The transcription factor Nrf2 regulates protective genes, impacting cancer prevention and drug resistance. Understanding Nrf2
Area of Science:
- Molecular Biology
- Biochemistry
- Cancer Research
Background:
- Nuclear factor erythroid 2-related factor 2 (Nrf2) is a transcription factor controlling cytoprotective genes.
- Nrf2 activation involves modifications to its inhibitor, Keap1, and phosphorylation by kinases.
- Nrf2 influences the expression of phase II enzymes crucial for detoxifying carcinogens.
Purpose of the Study:
- To summarize current knowledge on the role of Nrf2 in tumorigenesis.
- To assess the dual role of Nrf2 in cancer chemoprevention and drug resistance.
- To highlight the importance of understanding Nrf2 for cancer treatment strategies.
Main Methods:
- Literature review of Nrf2 pathway.
- Analysis of Nrf2's role in carcinogen inactivation.
- Examination of Nrf2's impact on drug metabolism and resistance.
Main Results:
- Nrf2 activation induces enzymes that inactivate potential carcinogens, suggesting chemopreventive potential.
- Nrf2-regulated enzymes can reduce drug efficacy and contribute to drug resistance.
- The precise role of Nrf2 in cancer is complex, with both beneficial and detrimental effects.
Conclusions:
- A comprehensive understanding of Nrf2 is essential for evaluating its up-regulation in cancer prevention and therapy.
- Nrf2 modulation presents a potential strategy for cancer chemoprevention.
- Further research is needed to fully elucidate Nrf2's complex involvement in tumorigenesis and drug resistance.
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Transcription Factors
