Abstract:
:How metabolism is rewired during embryonic development is still largely unknown, as it remains a major technical challenge to resolve metabolic activities or metabolite levels with spatiotemporal resolution. Here, we investigated metabolic changes during development of organogenesis-stage mouse embryos, focusing on the presomitic mesoderm (PSM). We measured glycolytic labeling kinetics from 13C-glucose tracing experiments and detected elevated glycolysis in the posterior, more undifferentiated PSM. We found evidence that the spatial metabolic differences are functionally relevant during PSM development. To enable real-time quantification of a glycolytic metabolite with spatiotemporal resolution, we generated a pyruvate FRET-sensor reporter mouse line. We revealed dynamic changes in cytosolic pyruvate levels as cells transit toward a more anterior PSM state. Combined, our approach identifies a gradient of glycolytic activity across the PSM, and we provide evidence that these spatiotemporal metabolic changes are intrinsically linked to PSM development and differentiation.
journal_name
Dev Celljournal_title
Developmental cellauthors
Bulusu V,Prior N,Snaebjornsson MT,Kuehne A,Sonnen KF,Kress J,Stein F,Schultz C,Sauer U,Aulehla Adoi
10.1016/j.devcel.2017.01.015subject
Has Abstractpub_date
2017-02-27 00:00:00pages
331-341.e4issue
4eissn
1534-5807issn
1878-1551pii
S1534-5807(17)30042-4journal_volume
40pub_type
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