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Strain-Dependent Gene Expression during Mouse Embryonic Palate Development

Department of Molecular, Cellular and Craniofacial Biology and Birth Defects Center, University of Louisville School of Dentistry, Louisville, KY 40202, USA
Division of Cardiovascular Medicine, University of Louisville School of Medicine, Louisville, KY 40202, USA
Author to whom correspondence should be addressed.
Academic Editor: Andy Wessels
J. Dev. Biol. 2015, 3(1), 2-10;
Received: 15 December 2014 / Accepted: 30 January 2015 / Published: 6 February 2015
PDF [2483 KB, uploaded 6 February 2015]


The effect of strain background on gene function in growth and development has been well documented. However, it has not been extensively reported whether the strain background affects the gene expression pattern. Here, we found that the expression of homeobox gene Meox-2 and FGF receptor 1 gene Fgfr1 during mouse palate development is strain-dependent. On the C57B6 inbred background, Meox-2 is expressed in the palatal outgrowth on Embryonic Day 11.5 (E11.5); the expression shifts posteriorly and is restricted to the back of palate on E14.5. On the Swiss Webster outbred background, Meox-2 expression covers both anterior and posterior regions with the same intensity from E12.5 to E14.5. On the Black Swiss background, Meox-2 expression also covers the entire palate A-P axis, but is much weaker in the anterior region on E14.5. Fgfr1 also displays distinct expression patterns in the palatal outgrowth on E11.5 in these three strains. On the Black Swiss outbred background, the expression is restricted to the anterior palatal outgrowth. In marked contrast, the expression in the Swiss Webster outbred strain is located exclusively in the posterior palate outgrowth on E11.5, whereas in the C57B6 inbred strain, the expression is undetectable in the palatal outgrowth on E11.5. View Full-Text
Keywords: secondary palate; Meox-2; Fgfr1; Swiss Webster; Black Swiss and C57B6 secondary palate; Meox-2; Fgfr1; Swiss Webster; Black Swiss and C57B6

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Jin, J.-Z.; Ding, J. Strain-Dependent Gene Expression during Mouse Embryonic Palate Development. J. Dev. Biol. 2015, 3, 2-10.

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