Metabolic clogging of mannose triggers dNTP loss and genomic instability in human cancer cells

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Metabolic clogging of mannose triggers dNTP loss and genomic instability in human cancer cells
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New study helps explain the anti-cancer properties of mannose sugar sbpdiscovery elife

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The stable isotope tracing experiments have problems that leave this point unaddressed. Specifically: 2. U-13C6-glucose is not suitable to assay the non-oxidative and oxidative branches of the PPP and thus the authors cannot conclude that mannose decreases flux into this pathway. The authors should use 1,2-C2-glucose tracing to draw these conclusions and also perform labeling with additional tracers to parse where the defects in nucleotide synthesis are occurring.

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