1. Chemotherapy resistance in acute myeloid leukemia is mediated by A20 suppression of spontaneous necroptosis.
- Author
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Culver-Cochran AE, Hassan A, Hueneman K, Choi K, Ma A, VanCauwenbergh B, O'Brien E, Wunderlich M, Perentesis JP, and Starczynowski DT
- Subjects
- Humans, Cell Line, Tumor, Anthracyclines pharmacology, Cytarabine pharmacology, Cytarabine therapeutic use, Animals, Female, Male, Mice, Middle Aged, Necroptosis drug effects, Tumor Necrosis Factor alpha-Induced Protein 3 metabolism, Tumor Necrosis Factor alpha-Induced Protein 3 genetics, Leukemia, Myeloid, Acute drug therapy, Leukemia, Myeloid, Acute pathology, Leukemia, Myeloid, Acute metabolism, Leukemia, Myeloid, Acute genetics, Drug Resistance, Neoplasm drug effects, Drug Resistance, Neoplasm genetics, NF-kappa B metabolism, Receptor-Interacting Protein Serine-Threonine Kinases metabolism, Receptor-Interacting Protein Serine-Threonine Kinases genetics
- Abstract
Acute myeloid leukemia (AML) is a deadly hematopoietic malignancy. Although many patients achieve complete remission with standard induction therapy, a combination of cytarabine and anthracycline, ~40% of patients have induction failure. These refractory patients pose a treatment challenge, as they do not respond to salvage therapy or allogeneic stem cell transplant. Herein, we show that AML patients who experience induction failure have elevated expression of the NF-κB target gene tumor necrosis factor alpha-induced protein-3 (TNFAIP3/A20) and impaired necroptotic cell death. A20
High AML are resistant to anthracyclines, while A20Low AML are sensitive. Loss of A20 in AML restores sensitivity to anthracycline treatment by inducing necroptosis. Moreover, A20 prevents necroptosis in AML by targeting the necroptosis effector RIPK1, and anthracycline-induced necroptosis is abrogated in A20High AML. These findings suggest that NF-κB-driven A20 overexpression plays a role in failed chemotherapy induction and highlights the potential of targeting an alternative cell death pathway in AML., (© 2024. The Author(s).)- Published
- 2024
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