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Mitochondrial ATP concentration decreases immediately after glucose administration to glucose-deprived hepatocytes.


ABSTRACT: Hepatocytes can switch their metabolic processes in response to nutrient availability. However, the dynamics of metabolites (such as lactate, pyruvate, and ATP) in hepatocytes during the metabolic switch remain unknown. In this study, we visualized metabolite dynamics in primary cultured hepatocytes during recovery from glucose-deprivation. We observed a decrease in the mitochondrial ATP concentration when glucose was administered to hepatocytes under glucose-deprivation conditions. In contrast, there was slight change in the cytoplasmic ATP concentration. A decrease in mitochondrial ATP concentration was associated with increased protein synthesis rather than glycogen synthesis, activation of urea cycle, and production of reactive oxygen species. These results suggest that mitochondrial ATP is important in switching metabolic processes in the hepatocytes.

SUBMITTER: Tsuno S 

PROVIDER: S-EPMC10761928 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature

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Mitochondrial ATP concentration decreases immediately after glucose administration to glucose-deprived hepatocytes.

Tsuno Saki S   Harada Kazuki K   Horikoshi Mina M   Mita Marie M   Kitaguchi Tetsuya T   Hirai Masami Yokota MY   Matsumoto Mitsuharu M   Tsuboi Takashi T  

FEBS open bio 20231213 1


Hepatocytes can switch their metabolic processes in response to nutrient availability. However, the dynamics of metabolites (such as lactate, pyruvate, and ATP) in hepatocytes during the metabolic switch remain unknown. In this study, we visualized metabolite dynamics in primary cultured hepatocytes during recovery from glucose-deprivation. We observed a decrease in the mitochondrial ATP concentration when glucose was administered to hepatocytes under glucose-deprivation conditions. In contrast,  ...[more]

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