Indispensable role for mouse ELP3 in embryonic stem cell maintenance and early development

Biochem Biophys Res Commun. 2016 Sep 16;478(2):631-6. doi: 10.1016/j.bbrc.2016.07.120. Epub 2016 Jul 29.


ELP3, a core component of Elongator, has been implicated in translational regulation via modification of tRNA at the wobble position. However, the precise biological function of ELP3 in early mouse development has not yet been defined. We here provide evidence that ELP3 plays crucial roles in mouse embryonic stem cell (ESC) maintenance and early development. ELP3 was detected ubiquitously in blastocysts and E10.5 embryos and shown to be increased during ESC differentiation. Depletion of ELP3 in ESC led to aberrant cell cycle progression, along with reduced expression of genes for pluripotency. Interestingly, our analyses revealed that, although the mRNA levels of the genes related to cell cycle were increased, protein levels were diminished in knockdown (KD) ESCs. The data, therefore, suggest that ELP3 function is critical for translational efficiency of the genes. Consistent with a proliferation defect in KD cells, Elp3 knockout (KO) embryos suffered from severe growth retardation and failed to develop beyond E12.5. In conclusion, we have demonstrated that ELP3 plays an indispensable role in ESC survival, differentiation and embryonic development in mouse.

Keywords: ELP3; Elongator; Embryonic stem cell; Mouse development.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Cycle
  • Cell Differentiation
  • Cell Line
  • Cell Proliferation
  • Embryo Loss / genetics
  • Embryo Loss / metabolism
  • Embryo, Mammalian / embryology
  • Embryo, Mammalian / metabolism
  • Fetal Growth Retardation / genetics
  • Fetal Growth Retardation / metabolism
  • Gene Expression Regulation, Developmental*
  • Gene Knockdown Techniques
  • Histone Acetyltransferases / genetics
  • Histone Acetyltransferases / metabolism*
  • Mice
  • Mice, Inbred C57BL
  • Mice, Knockout
  • Mouse Embryonic Stem Cells / cytology*
  • Mouse Embryonic Stem Cells / metabolism


  • Elp3 protein, mouse
  • Histone Acetyltransferases