Comprehensive Mapping of Pluripotent Stem Cell Metabolism Using Dynamic Genome-Scale Network Modeling.

Comprehensive Mapping of Pluripotent Stem Cell Metabolism Using Dynamic Genome-Scale Network Modeling.
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DOI:
10.1016/j.celrep.2017.07.048
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发表时间:
2017-12-05
期刊:
影响因子:
8.8
通讯作者:
Collins JJ
Collins JJ
中科院分区:
生物学1区
文献类型:
--
作者:
Chandrasekaran S;Zhang J;Sun Z;Zhang L;Ross CA;Huang YC;Asara JM;Li H;Daley GQ;Collins JJ

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Metabolism is an emerging stem cell hallmark tied to cell fate, pluripotency and self-renewal, yet systems-level understanding of stem cell metabolism has been limited by the lack of genome-scale network models. Here we develop a systems approach to integrate time-course metabolomics data with a computational model of metabolism to analyze the metabolic state of naïve and primed murine pluripotent stem cells. Using this approach, we find that one-carbon metabolism involving phosphoglycerate dehydrogenase, folate-synthesis and nucleotide-synthesis is a key pathway that differs between the two states, resulting in differential sensitivity to anti-folates. The model also predicts that the pluripotency factor Lin28 regulates this one-carbon metabolic pathway, which we validate using metabolomics data from Lin28-deficient cells. Moreover, we identify and validate metabolic reactions related to S-adenosyl-methionine production that can differentially impact histone methylation in naïve and primed cells. Our network-based approach provides a framework for characterizing metabolic changes influencing pluripotency and cell-fate.
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