Abstract
Mutations in the NRF2-KEAP1 pathway are common in non-small cell lung cancer (NSCLC) and confer broad-spectrum therapeutic resistance, leading to poor outcomes. Currently, there is no means to non-invasively identify NRF2 activation in living subjects. Here, we show that positron emission tomography imaging with the system xc- radiotracer, [18F]FSPG, provides a sensitive and specific marker of NRF2 activation in orthotopic, patient-derived, and genetically engineered mouse models of NSCLC. We found a NRF2-related gene expression signature in a large cohort of NSCLC patients, suggesting an opportunity to preselect patients prior to [18F]FSPG imaging. Furthermore, we reveal that system xc- is a metabolic vulnerability that can be therapeutically targeted with an antibody-drug conjugate for sustained tumour growth suppression. Overall, our results establish [18F]FSPG as a predictive marker of therapy resistance in NSCLC and provide the basis for the clinical evaluation of both imaging and therapeutic agents that target this important antioxidant pathway.
Original language | English |
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Article number | 10484 |
Journal | Nature Communications |
Volume | 15 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2024 Dec 17 |
Externally published | Yes |
Bibliographical note
© 2024. The Author(s).Free keywords
- Carcinoma, Non-Small-Cell Lung/diagnostic imaging
- Animals
- NF-E2-Related Factor 2/metabolism
- Humans
- Lung Neoplasms/diagnostic imaging
- Positron-Emission Tomography/methods
- Mice
- Cell Line, Tumor
- Female
- Kelch-Like ECH-Associated Protein 1/metabolism
- Fluorine Radioisotopes
- Radiopharmaceuticals