Dataset Information

PRODH regultes naive pluripotency by influencing mitochondrial oxidative phosphorylation (Targeted metabolomics)

ABSTRACT:

Naïve human embryonic stem cells (hESCs) that resemble the pre-implantation epiblasts are fueled by a combination of aerobic glycolysis and oxidative phosphorylation, but their mitochondrial regulators are poorly understood. Here we report that, proline dehydrogenase (PRODH), a mitochondria-localized proline metabolism enzyme, is dramatically upregulated in naïve hESCs compared to their primed counterparts. The upregulation of PRODH is induced by a reduction in c-Myc expression that is dependent on PD0325901, a MEK inhibitor routinely present in naive hESC culture media. PRODH knockdown in naive hESCs significantly promoted mitochondrial oxidative phosphorylation (mtOXPHOS) and reactive oxygen species (ROS) production that triggered autophagy, DNA damage, and apoptosis. Remarkably, MitoQ, a mitochondria-targeted antioxidant, effectively restored the pluripotency and proliferation of PRODH-knockdown naïve hESCs, indicating that PRODH maintains naïve pluripotency by preventing excessive ROS production. Concomitantly, PRODH knockdown significantly slowed down the proteolytic degradation of multiple key mitochondrial electron transport chain complex proteins. Thus, we revealed a crucial role of PRODH in limiting mtOXPHOS and ROS production, and thereby safeguarding naïve pluripotency of hESCs.

Targeted metabolomics (amino acids and derivatives) - H9P (Primed) VS H9N (Naïve) - is reported in the current study MTBLS7832.

Untargeted metabolomics - H9N PLKO.1 vs H9P PLKO.1 / H9P shPRODH vs H9P PLKO.1 / H9N shPRODH vs H9N PLKO.1 - is reported in MTBLS7840.

INSTRUMENT(S): Liquid Chromatography MS - positive - hilic

SUBMITTER: cheng chen

PROVIDER: MTBLS7832 | MetaboLights | 2024-02-12

REPOSITORIES: MetaboLights

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Dataset's files

Source:

			Action	DRS
	MTBLS7832	Other
	FILES	Other
	a_MTBLS7832_LC-MS_positive_hilic_metabolite_profiling.txt	Txt
	i_Investigation.txt	Txt
	m_MTBLS7832_LC-MS_positive_hilic_metabolite_profiling_v2_maf.tsv	Tabular

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Publications

PRODH safeguards human naive pluripotency by limiting mitochondrial oxidative phosphorylation and reactive oxygen species production.

Chen Cheng C Liu Qianyu Q Chen Wenjie W Gong Zhiyuan Z Kang Bo B Sui Meihua M Huang Liming L Wang Ying-Jie YJ

EMBO reports 20240313 4

Naive human embryonic stem cells (hESCs) that resemble the pre-implantation epiblasts are fueled by a combination of aerobic glycolysis and oxidative phosphorylation, but their mitochondrial regulators are poorly understood. Here we report that, proline dehydrogenase (PRODH), a mitochondria-localized proline metabolism enzyme, is dramatically upregulated in naive hESCs compared to their primed counterparts. The upregulation of PRODH is induced by a reduction in c-Myc expression that is dependent ...[more]

PMID: 38480845

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