Cystine uptake inhibition potentiates front-line therapies in acute myeloid leukemia.
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Authors
Pardieu, Bryann
Pasanisi, Justine
Ling, Frank
Dal Bello, Reinaldo
Penneroux, Justine
Su, Angela
Joudinaud, Romane
Chat, Laureen
Wu, Hsin Chieh
Duchmann, Matthieu
Sodaro, Gaetano
Chauvel, Clémentine
Castelli, Florence A
Vasseur, Loic
Pacchiardi, Kim
Laiguillon, Marie-Charlotte
Meduri, Eshwar
Vaganay, Camille
Berrou, Jeannig
Benaksas, Chaima
Forget, Antoine
Braun, Thorsten
Gardin, Claude
Raffoux, Emmanuel
Clappier, Emmanuelle
Dombret, Hervé
Fenouille, Nina
Publication Date
2022-06Journal Title
Leukemia
ISSN
0887-6924
Publisher
Springer Science and Business Media LLC
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Pardieu, B., Pasanisi, J., Ling, F., Dal Bello, R., Penneroux, J., Su, A., Joudinaud, R., et al. (2022). Cystine uptake inhibition potentiates front-line therapies in acute myeloid leukemia.. Leukemia https://doi.org/10.1038/s41375-022-01573-6
Abstract
By querying metabolic pathways associated with leukemic stemness and survival in multiple AML datasets, we nominated SLC7A11 encoding the xCT cystine importer as a putative AML dependency. Genetic and chemical inhibition of SLC7A11 impaired the viability and clonogenic capacity of AML cell lines in a cysteine-dependent manner. Sulfasalazine, a broadly available drug with xCT inhibitory activity, had anti-leukemic activity against primary AML samples in ex vivo cultures. Multiple metabolic pathways were impacted upon xCT inhibition, resulting in depletion of glutathione pools in leukemic cells and oxidative stress-dependent cell death, only in part through ferroptosis. Higher expression of cysteine metabolism genes and greater cystine dependency was noted in NPM1-mutated AMLs. Among eight anti-leukemic drugs, the anthracycline daunorubicin was identified as the top synergistic agent in combination with sulfasalazine in vitro. Addition of sulfasalazine at a clinically relevant concentration significantly augmented the anti-leukemic activity of a daunorubicin-cytarabine combination in a panel of 45 primary samples enriched in NPM1-mutated AML. These results were confirmed in vivo in a patient-derived xenograft model. Collectively, our results nominate cystine import as a druggable target in AML and raise the possibility to repurpose sulfasalazine for the treatment of AML, notably in combination with chemotherapy.
Identifiers
External DOI: https://doi.org/10.1038/s41375-022-01573-6
This record's URL: https://www.repository.cam.ac.uk/handle/1810/336777
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