Abstract
NUDT15 encodes nucleotide triphosphate diphosphatase that is responsible for metabolizing purine analog drugs, and its genetic mutation results in severe side effects from thiopurine therapy. However, the functions of Nudt15 in leukemic stem cells (LSCs) and hematopoietic stem cells (HSCs) remain unknown. Here we reveal the Nudt15-regulating self-renewal of both mouse LSCs and HSCs. Our data show that Nudt15 negatively regulates murine leukemogenesis and its deficiency prolongs the survival of murine AML recipients by impairing LSC self-renewal, while Nudt15 ablation markedly enhances mouse HSC regenerative potential and self-renewal. Mechanistically, Nudt15 modulates inflammatory signaling in mouse LSCs and HSCs, leading to divergent self-renewal outcomes. Nudt15 depletion inhibits mouse LSC self-renewal by downregulating Ifi30, resulting in elevating intracellular ROS level. Gata2, a key regulator, is required for Nudt15-mediating inflammatory signaling in mouse HSCs. Collectively, our results present new crucial roles of Nudt15 in maintaining the functions of mouse LSC and HSC through inflammatory signaling and have a new insight into clinical implications.
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Data availability
RNA-seq data that support the findings of this study are available in the National Center for Biotechnology information’s Gene Expression Omnibus, with accession number GSE269233.
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Acknowledgements
This research was supported in part by the National Natural Science Foundation of China (Grant No. 82070106), the Natural Science Foundation of Shanghai (Grant No. 18ZR1414900), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, and Special Project of Science and Technology Plan of Shaoxing Science and Technology Bureau (Grant No. 2020B33004).
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Z.Z. was responsible for experimental design, data analysis, and manuscript preparation; J.C.W, Y.Z., L.L., L.W., S.S, B.W., and G.W. performed experiments.
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This study was conducted in accordance with the Declaration of Helsinki. Human samples were obtained from the patients and healthy donors after acquiring written informed consent. All experimental protocols were approved by the Ethics Committee of Shanghai University (Approval number: ECSHU 2020-047).
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Wang, J., Zhang, Y., Li, L. et al. Nudt15-mediated inflammatory signaling contributes to divergent outcomes in leukemogenesis and hematopoiesis. Leukemia 38, 1958–1970 (2024). https://doi.org/10.1038/s41375-024-02352-1
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DOI: https://doi.org/10.1038/s41375-024-02352-1
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