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Updated: May 30, 2026
03:34
Optimized Quantitative Assessment of Enhancer RNA Stability in Mouse Embryonic Stem Cells
Published on: November 21, 2025
Transcripts that associate with the RNA binding protein, DEAD-END (DND1), in embryonic stem (ES) cells
Rui Zhu1, Michelina Iacovino, Elisabeth Mahen
1Department of Genetics, University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.
BMC Molecular Biology
|August 20, 2011
Summary
The RNA-binding protein DEAD END (DND1) is crucial for germ cell development and cancer suppression. This study identifies new mRNA targets of DND1 in human embryonic stem cells, revealing its role in translational regulation.
Area of Science:
- Molecular Biology
- Stem Cell Biology
- Cancer Research
Background:
- DEAD END (DND1) is an RNA-binding protein vital for vertebrate germ cell viability and a factor in testicular germ cell tumor susceptibility.
- DND1 interacts with mRNA 3'-untranslated regions (3'-UTRs), inhibiting microRNA binding to maintain protein expression of targets like P27 and LATS2.
- DND1 is expressed in embryonic stem (ES) cells, which share gene expression similarities with germ cells, making them a model for studying DND1 function.
Purpose of the Study:
- To identify novel mRNA targets of DND1 in human embryonic stem (hES) cells.
- To establish a doxycycline-inducible hES cell line expressing hemagglutinin (HA)-tagged DND1 for in vitro studies.
- To investigate the role of DND1 in regulating gene expression within stem cells.
Main Methods:
- Development of a stable, genetically modified hES cell line with doxycycline-inducible, HA-tagged DND1 expression.
- Application of ribonucleoprotein immunoprecipitation (RIP) followed by RT-PCR to isolate and identify DND1-associated transcripts.
- Bioinformatics analysis of pulled-down transcripts to identify potential DND1 binding motifs.
Main Results:
- The inducible hES cell line effectively expresses HA-DND1 and serves as a suitable system for studying DND1 interactions.
- RIP-RT identified specific associations between HA-DND1 and transcripts encoding pluripotency factors (OCT4, SOX2, NANOG, LIN28), cell cycle regulators (TP53, LATS2), and apoptotic factors (BCLX, BAX).
- Bioinformatics analysis revealed a lack of known DND1-interacting motifs in many of the identified associated transcripts.
Conclusions:
- The inducible ES cell system is effective for identifying DND1 mRNA targets in vitro.
- DND1 interacts with a broad spectrum of mRNAs in ES cells, including those for key regulatory proteins.
- These findings suggest DND1 plays a role in translational regulation, modulating the expression of critical factors in ES cells.
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