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Variations in Glycogen Synthesis in Human Pluripotent Stem Cells with Altered Pluripotent States

Fig 6

2-NBDG accumulation and retention in NIH-i12 iPSCs under naïve hPSC growth conditions.

(A) Schema of 2-NBDG accumulation and retention (glycogen labeling) experiments. (B) 2-hour 2-NBDG accumulation in the presence of 10 mM D-glucose. Upper panel: green fluorescence intensity (Fluor) images from 2-NBDG alone. These images were obtained (immediately after replacing with fresh mTeSR1 medium) by non-saturated time-exposure guided by an autoexposure software (Zeiss Inc.). Lower panel: the corresponding phase images of the upper panel. Only brightness was adjusted in phase images (presented in both B and C) to enhance the image presentation in this figure. (C) 2-NBDG retention and glycogen labeling carried out in the presence of 10 mM D-glucose and absence of 2-NBDG. Upper panel: unique fluorescence loci (dots) were derived from 2-NBDG signals as detailed in Fig 5. (D) Quantitative analysis of mean fluorescence intensity (FI) in Fig 6B. (E, F) Quantitative analysis of 2-NBDG retention and glycogen labeling by measuring mean fluorescence intensity (FI, arbitrary units) from at least 4 random colonies (E) and by counting 2-NBDG loci (F). Columns represent mean fluorescence intensity measured from at least 4 random colonies and bar standard deviations. Scale bars represent 100 μm.

Fig 6

doi: https://doi.org/10.1371/journal.pone.0142554.g006