Influence of threonine metabolism on S-adenosylmethionine and histone methylation.
Journal Article (Journal Article)
Threonine is the only amino acid critically required for the pluripotency of mouse embryonic stem cells (mESCs), but the detailed mechanism remains unclear. We found that threonine and S-adenosylmethionine (SAM) metabolism are coupled in pluripotent stem cells, resulting in regulation of histone methylation. Isotope labeling of mESCs revealed that threonine provides a substantial fraction of both the cellular glycine and the acetyl-coenzyme A (CoA) needed for SAM synthesis. Depletion of threonine from the culture medium or threonine dehydrogenase (Tdh) from mESCs decreased accumulation of SAM and decreased trimethylation of histone H3 lysine 4 (H3K4me3), leading to slowed growth and increased differentiation. Thus, abundance of SAM appears to influence H3K4me3, providing a possible mechanism by which modulation of a metabolic pathway might influence stem cell fate.
Full Text
Duke Authors
Cited Authors
- Shyh-Chang, N; Locasale, JW; Lyssiotis, CA; Zheng, Y; Teo, RY; Ratanasirintrawoot, S; Zhang, J; Onder, T; Unternaehrer, JJ; Zhu, H; Asara, JM; Daley, GQ; Cantley, LC
Published Date
- January 11, 2013
Published In
Volume / Issue
- 339 / 6116
Start / End Page
- 222 - 226
PubMed ID
- 23118012
Pubmed Central ID
- PMC3652341
Electronic International Standard Serial Number (EISSN)
- 1095-9203
Digital Object Identifier (DOI)
- 10.1126/science.1226603
Language
- eng
Conference Location
- United States