%0 Journal Article
%T Spectral tracing of deuterium for imaging glucose metabolism
%J -
%D 2019
%R https://doi.org/10.1038/s41551-019-0393-4
%X Cells and tissues often display pronounced spatial and dynamical metabolic heterogeneity. Common glucose-imaging techniques report glucose uptake or catabolism activity, yet do not trace the functional utilization of glucose-derived anabolic products. Here we report a microscopy technique for the optical imaging, via the spectral tracing of deuterium (STRIDE), of diverse macromolecules derived from glucose. Based on stimulated Raman-scattering imaging, STRIDE visualizes the metabolic dynamics of newly synthesized macromolecules, such as DNA, protein, lipids and glycogen, via the enrichment and distinct spectra of carbon¨Cdeuterium bonds transferred from the deuterated glucose precursor. STRIDE can also use spectral differences derived from different glucose isotopologues to visualize temporally separated glucose populations using a pulse¨Cchase protocol. We also show that STRIDE can be used to image glucose metabolism in many mouse tissues, including tumours, brain, intestine and liver, at a detection limit of 10£¿mM of carbon¨Cdeuterium bonds. STRIDE provides a high-resolution and chemically informative assessment of glucose anabolic utilization
%U https://www.nature.com/articles/s41551-019-0393-4