Strain-dependent perinatal lethality of Ovol1-deficient mice and identification of Ovol2 as a downstream target of Ovol1 in skin epidermis.

Abstract

Ovol1 encodes a zinc finger transcriptional repressor that is downstream of the LEF1/beta-catenin complex, nuclear effectors of canonical Wnt signaling. Previous gene knockout studies performed in a 129SvxC57BL/6 mixed genetic background revealed that Ovol1-deficient mice survive to adulthood but display multiple tissue defects. In this study, we describe a C57BL/6 strain-specific reduction in perinatal survival of Ovol1 mutant mice. The perinatal lethality is accompanied by kidney epithelial cysts of embryonic onset and delayed skin barrier acquisition. Genetic analysis suggests a partial functional compensation by Ovol2 for the loss of Ovol1. The expression of Ovol2 was up-regulated in Ovol1-deficient epidermis, and Ovol1 represses the activity of Ovol2 promoter in a DNA binding-dependent manner. Collectively, these studies uncover novel functions of Ovol1 in mouse development and identify Ovol2 as a downstream target of Ovol1.

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@article{Teng2007StraindependentPL, title={Strain-dependent perinatal lethality of Ovol1-deficient mice and identification of Ovol2 as a downstream target of Ovol1 in skin epidermis.}, author={Andy Yen-Tung Teng and Mahalakshmi Nair and Julie Wells and Julia A Segre and Xing Dai}, journal={Biochimica et biophysica acta}, year={2007}, volume={1772 1}, pages={89-95} }