A functionally defined high-density NRF2 interactome reveals new conditional regulators of ARE transactivation
Jonathan Poh1, Amy H Ponsford1, James Boyd1
1Institute of Translational Medicine, University of Liverpool, UK.
This study maps the human NRF2 interactome, identifying new partners that regulate its activity. Over 77% of these new partners modify NRF2 responses, offering insights into disease and drug resistance.
Area of Science:
- Molecular Biology
- Cellular Biology
- Genetics
Background:
- Nuclear factor erythroid 2-related factor 2 (NRF2) is a key transcription factor involved in cellular protection.
- NRF2 dysregulation is implicated in over 60 human diseases, drug resistance, and adverse drug reactions.
Purpose of the Study:
- To systematically map the human NRF2 interactome and identify novel NRF2-interacting partners.
- To functionally characterize the impact of newly identified NRF2 partners on NRF2 activity in health and disease contexts.
Main Methods:
- Systematic testing of 1962 predicted NRF2-partner interactions.
- Verification using co-immunoprecipitation, dual luminescence-based co-immunoprecipitation (DULIP), and live-cell fluorescence cross-correlation spectroscopy (FCCS).
- Functional assessment in NRF2 knockout (NRF2-/-) and disease-model (NRF2T80K, KEAP1-/-) cell lines.
Main Results:
- An experimentally defined, high-density human NRF2 interactome was generated.
- 46 new NRF2 partners were identified and verified.
- Over 77% (17/22) of the newly investigated partners significantly modified NRF2 responses, with some effects specific to disease conditions.
Conclusions:
- The study provides a comprehensive NRF2 interactome, revealing complex regulatory networks.
- Newly identified NRF2 partners play crucial roles in modulating NRF2 activity, particularly under disease-related conditions.
- This resource offers new perspectives on NRF2 function in health and disease, impacting therapeutic strategies.
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