ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2026
TPI1 Loss Triggers a Metabolite-Driven Mitochondrial Redox Vulnerability via the SARM1-cADPR-Ca
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Cellular senescence is a stable cell cycle arrest program with important therapeutic implications in cancer, yet how metabolic perturbations are translated into redox-dependent senescence remains incompletely understood. Here, we identify triosephosphate isomerase 1 (TPI1) as a critical regulator of senescence in clear cell renal cell carcinoma (ccRCC) through a customized CRISPR-Cas9 metabolic screen. TPI1 depletion induces a robust senescence phenotype characterized by mitochondrial redox imbalance, DNA damage, and stable growth arrest. Mechanistically, loss of TPI1 leads to accumulation of dihydroxyacetone phosphate (DHAP), which engages a SARM1-dependent signaling pathway, resulting in increased cyclic ADP-ribose (cADPR) production and intracellular Ca
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