What question did this study set out to answer?

To investigate the role of the cytoplasmic RNA-binding protein Unr in regulating mouse embryonic stem cell pluripotency and lineage commitment.

September 27, 2011Stem CellsOpen Access

The RNA-Binding Protein Unr Prevents Mouse Embryonic Stem Cells Differentiation Toward the Primitive Endoderm Lineage

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To investigate the role of the cytoplasmic RNA-binding protein Unr in regulating mouse embryonic stem cell pluripotency and lineage commitment.
Generated and examined unr knockout (unr(-/-)) mouse embryonic stem cells, alongside genetic rescue experiments via Unr re-expression.
Assessed pluripotency and lineage transition using teratoma formation assays, marker coexpression analysis (Gata6, Oct4, Nanog, Sox2), and protein subcellular localization.
Analyzed Gata6 mRNA stability in embryonic stem cells in the presence and absence of Unr.
Loss of Unr triggers spontaneous differentiation of embryonic stem cells into primitive endoderm, a phenotype entirely reversed upon Unr re-expression.
Differentiated unr(-/-) stem cells retain pluripotency and teratoma-forming capacity while coexpressing Gata6 alongside Oct4, Nanog, and Sox2, with Nanog and Sox2 exhibiting an atypical dual nuclear and cytoplasmic distribution.
Unr directly destabilizes Gata6 mRNA, demonstrating that post-transcriptional suppression of Gata6 is necessary to preserve the stem cell ground state.

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Implication

Experimental study demonstrates that Unr deficiency triggers primitive endoderm differentiation in mouse embryonic stem cells, indicating a post-transcriptional brake on lineage commitment.

Cite This Study

Elatmani et al. (2011) studied this question.

synapsesocial.com/papers/6a8830039fc8a8114e4a6911 https://doi.org/10.1002/stem.712

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Implication

Experimental study demonstrates that Unr deficiency triggers primitive endoderm differentiation in mouse embryonic stem cells, indicating a post-transcriptional brake on lineage commitment.

The RNA-Binding Protein Unr Prevents Mouse Embryonic Stem Cells Differentiation Toward the Primitive Endoderm Lineage

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Discussion

Implication

Cite This Study

The RNA-Binding Protein Unr Prevents Mouse Embryonic Stem Cells Differentiation Toward the Primitive Endoderm Lineage

Key Points

Discussion

Implication

Cite This Study

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