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An RNA code for the FOX2 splicing regulator revealed by mapping RNA-protein interactions in stem cells
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An RNA code for the FOX2 splicing regulator revealed by mapping RNA-protein interactions in stem cells
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Journal Article
An RNA code for the FOX2 splicing regulator revealed by mapping RNA-protein interactions in stem cells
2009
Overview
Using CLIP-seq technology, the genome-wide binding sites of the FOX2 splicing regulator in human embryonic stem cells (hESCs) are now identified. Further work based on FOX2 depletion uncovers the underlying logic of FOX2-mediated regulation of alternative splicing and finds that such compromised hESCs undergo rapid cell death.
The elucidation of a code for regulated splicing has been a long-standing goal in understanding the control of post-transcriptional gene expression events that are crucial for cell survival, differentiation and development. We decoded functional RNA elements
in vivo
by constructing an RNA map for the cell type–specific splicing regulator FOX2 (also known as RBM9) via cross-linking immunoprecipitation coupled with high-throughput sequencing (CLIP-seq) in human embryonic stem cells. The map identified a large cohort of specific FOX2 targets, many of which are themselves splicing regulators, and comparison between the FOX2 binding profile and validated splicing events revealed a general rule for FOX2-regulated exon inclusion or skipping in a position-dependent manner. These findings suggest that FOX2 functions as a critical regulator of a splicing network, and we further show that FOX2 is important for the survival of human embryonic stem cells.
Publisher
Nature Publishing Group US,Nature Publishing Group
