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. 2021 Mar 1;131(5):e137681. doi: 10.1172/JCI137681

Figure 5. The Kdn/Neu5Ac ratio increases in cytosolic fractions after mannose feeding in human and mouse cell types.

Figure 5

Levels of cytosolic free (and CMP-) Kdn (A–E) and CMP-Kdn (F–J) were measured by DMB-HPLC. Results are shown for (A and F) HEK293A cells; (B and G) BJAB K88 (GNE WT) cells; (C and H) BJAB K20 (GNE-KO) cells; (D and I) PMI WT mouse embryonic fibroblasts; and (E and J) PMI-KO cells. CMP-Sias were measured by DMB-HPLC after NaBH4 treatment. The mannose concentration was set at 0 or 15 mM, except for PMI-KO cells (0.025, 0.25, and 1 mM). Data are shown as the mean (SD). *P < 0.05, by unpaired t test.