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Updated: Mar 26, 2026

Inducible and Reversible Dominant-negative DN Protein Inhibition
Published on: January 7, 2019
Conditional restoration and inactivation of Rbm47 reveal its tissue-context requirement for viability and growth
Nicolas Fossat1,2, Tania Radziewic1, Vanessa Jones1
1Embryology Unit, Children's Medical Research Institute, Westmead, New South Wales, 2145, Australia.
Abstract:
Rbm47 encodes a RNA binding protein that is necessary for Cytidine to Uridine RNA editing. Rbm47(gt/gt) mutant mice that harbor inactivated Rbm47 display poor viability. Here it was determined that the loss of Rbm47(gt/gt) offspring is due to embryonic lethality at mid-gestation. It was further showed that growth of the surviving Rbm47(gt/gt) mutants is impaired. Rbm47 is expressed in both the visceral endoderm and the definitive endoderm. Using the utility of the switchable FlEx gene-trap cassette and the activity of Cre and FLP recombinases to generate mice that conditionally inactivate and restore Rbm47 function in tissue-specific manner, it was demonstrated that Rbm47 function is required in the embryo proper, and not the visceral endoderm, for viability and growth. genesis 54:115-122, 2016. © 2016 Wiley Periodicals, Inc.
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