ArticleAntioxidants (Basel, Switzerland)2026
Glyoxalase 2 Drives D-Lactate Oncometabolite Signaling to Promote Prostate Cancer Aggressiveness via FAK/Src Activation.
Article in Antioxidants (Basel, Switzerland), 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
Glyoxalase 2 (Glo2) is a key enzyme of the glyoxalase system that catalyzes the conversion of S-lactoylglutathione (LSG) into glutathione (GSH) and D-lactate. In prostate cancer (PCa), we previously demonstrated that the oncogenic PTEN-PI3K-AKT-mTOR-ERα signaling pathway upregulates Glo2, leading to intracellular D-lactate accumulation and enhanced cell migration, invasiveness, and expression of epithelial-to-mesenchymal transition (EMT)-associated markers. However, whether D-lactate acts as a bioactive metabolic signal contributing to tumor aggressiveness remains unclear. Here, after confirming our previous findings, we demonstrate-using Glo2 silencing, ectopic expression, pharmacological inhibitors, and exogenous D-lactate supplementation-that Glo2-dependent D-lactate accumulation promotes EMT-like plasticity, migration, and invasion in PTEN-deficient PCa cells via a functional link with FAK/Src signaling. Collectively, these results suggest that the Glo2-D-lactate axis may contribute to metabolic rewiring associated with aggressive behavior in PTEN-deficient PCa, warranting further in vivo studies to evaluate its potential as a therapeutic target to limit tumor progression.
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