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, 147 (1), 132-46

An Alternative Splicing Switch Regulates Embryonic Stem Cell Pluripotency and Reprogramming

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An Alternative Splicing Switch Regulates Embryonic Stem Cell Pluripotency and Reprogramming

Mathieu Gabut et al. Cell.

Abstract

Alternative splicing (AS) is a key process underlying the expansion of proteomic diversity and the regulation of gene expression. Here, we identify an evolutionarily conserved embryonic stem cell (ESC)-specific AS event that changes the DNA-binding preference of the forkhead family transcription factor FOXP1. We show that the ESC-specific isoform of FOXP1 stimulates the expression of transcription factor genes required for pluripotency, including OCT4, NANOG, NR5A2, and GDF3, while concomitantly repressing genes required for ESC differentiation. This isoform also promotes the maintenance of ESC pluripotency and contributes to efficient reprogramming of somatic cells into induced pluripotent stem cells. These results reveal a pivotal role for an AS event in the regulation of pluripotency through the control of critical ESC-specific transcriptional programs.

Comment in

  • Splicing Up Pluripotency
    BR Graveley. Cell 147 (1), 22-4. PMID 21962502.
    In this issue of Cell, Gabut and colleagues (2011) identify a new splice variant of FOXP1 that directly regulates the expression of pluripotency genes. It endows human em …

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