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Multifaceted regulation of somatic cell reprogramming by mRNA translational control. | LitMetric

Multifaceted regulation of somatic cell reprogramming by mRNA translational control.

Cell Stem Cell

The Rosalind and Morris Goodman Cancer Research Center, McGill University, Montréal, QC H3A 1A3, Canada; Department of Biochemistry, McGill University, Montréal, QC H3A 1A3, Canada; Department of Medicine, McGill University Health Center, Montréal, QC H3A 1A3, Canada. Electronic address:

Published: May 2014

AI Article Synopsis

Article Abstract

Translational control plays a pivotal role in the regulation of the pluripotency network in embryonic stem cells, but its effect on reprogramming somatic cells to pluripotency has not been explored. Here, we show that eukaryotic translation initiation factor 4E (eIF4E) binding proteins (4E-BPs), which are translational repressors, have a multifaceted effect on the reprogramming of mouse embryonic fibroblasts (MEFs) into induced pluripotent stem cells (iPSCs). Loss of 4E-BP expression attenuates the induction of iPSCs at least in part through increased translation of p21, a known inhibitor of somatic cell reprogramming. However, MEFs lacking both p53 and 4E-BPs show greatly enhanced reprogramming resulting from a combination of reduced p21 transcription and enhanced translation of endogenous mRNAs such as Sox2 and Myc and can be reprogrammed through the expression of only exogenous Oct4. Thus, 4E-BPs exert both positive and negative effects on reprogramming, highlighting the key role that translational control plays in regulating this process.

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Source
http://dx.doi.org/10.1016/j.stem.2014.02.005DOI Listing

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