Journal
STEM CELLS
Volume 38, Issue 5, Pages 624-638Publisher
OXFORD UNIV PRESS
DOI: 10.1002/stem.3152
Keywords
glycolysis; malate aspartate shuttle; mitochondria; naive; nicotinamide adenine dinucleotide; pluripotent
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Funding
- Alfred Nicholas Fellowship Award [UTR6.197]
- Australian Research Council Special Research Initiative Stem Cells Australia [SR110001002]
- Jasper Loftus-Hills Award [UTR7.116]
- Melbourne Research Fellowships (Career Interruption)
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Nicotinamide adenine dinucleotide (NAD(+)) and its precursor metabolites are emerging as important regulators of both cell metabolism and cell state. Interestingly, the role of NAD(+) in human embryonic stem cell (hESC) metabolism and the regulation of pluripotent cell state is unresolved. Here we show that NAD(+) simultaneously increases hESC mitochondrial oxidative metabolism and partially suppresses glycolysis and stimulates amino acid turnover, doubling the consumption of glutamine. Concurrent with this metabolic remodeling, NAD(+) increases hESC pluripotent marker expression and proliferation, inhibits BMP4-induced differentiation and reduces global histone 3 lysine 27 trimethylation, plausibly inducing an intermediate naive-to-primed bivalent metabolism and pluripotent state. Furthermore, maintenance of NAD(+) recycling via malate aspartate shuttle activity is identified as an absolute requirement for hESC self-renewal, responsible for 80% of the oxidative capacity of hESC mitochondria. Our findings implicate NAD(+) in the regulation of cell state, suggesting that the hESC pluripotent state is dependent upon cellular NAD(+).
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