ArticleNature cancer2026
Inhibition of ADSS2-mediated de novo AMP biosynthesis re-sensitizes acute myeloid leukemia to BH3 mimetics.
Article in Nature cancer, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
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Authors and funding
33 authors.
Funding
Abstract
De novo purine synthesis is required to maintain tumor growth; however, its impact on therapy resistance remains unclear. Here, through a dynamic BH3-priming-based CRISPR screen, we found that deletion of ADSS2, which encodes the adenylosuccinate synthase 2 enzyme essential for adenosine monophosphate (AMP) synthesis, re-sensitizes drug-resistant acute myeloid leukemia cells to venetoclax and a myeloid cell leukemia-1 (MCL1) inhibitor. Single-cell sequencing analysis of patient-derived xenograft samples revealed a positive association of high ADSS2 activity in TP53-mutant cells with poor responsiveness to venetoclax. We developed an ADSS2 antagonist, which synergized with BH3 mimetics to promote apoptosis in preclinical models. Mechanistically, sensitization mediated by ADSS2 targeting correlated with downregulated AMP-activated protein kinase activity, which in resistant cells promotes mitophagy to eliminate damaged mitochondria after BH3 mimetic treatment. These data show that AMP synthesis promotes BH3 mimetic resistance and that combining ADSS2 targeting with BH3 mimetics represents a promising anti-cancer approach.
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