Left-right function of dmrt2 genes is not conserved between zebrafish and mouse.

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ID: 32825
2010
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Abstract
BACKGROUND:Members of the Dmrt family, generally associated with sex determination, were shown to be involved in several other functions during embryonic development. Dmrt2 has been studied in the context of zebrafish development where, due to a duplication event, two paralog genes dmrt2a and dmrt2b are present. Both zebrafish dmrt2a/terra and dmrt2b are important to regulate left-right patterning in the lateral plate mesoderm. In addition, dmrt2a/terra is necessary for symmetric somite formation while dmrt2b regulates somite differentiation impacting on slow muscle development. One dmrt2 gene is also expressed in the mouse embryo, where it is necessary for somite differentiation but with an impact on axial skeleton development. However, nothing was known about its role during left-right patterning in the lateral plate mesoderm or in the symmetric synchronization of somite formation. METHODOLOGY/PRINCIPAL FINDINGS:Using a dmrt2 mutant mouse line, we show that this gene is not involved in symmetric somite formation and does not regulate the laterality pathway that controls left-right asymmetric organ positioning. We reveal that dmrt2a/terra is present in the zebrafish laterality organ, the Kupffer's vesicle, while its homologue is excluded from the mouse equivalent structure, the node. On the basis of evolutionary sub-functionalization and neo-functionalization theories we discuss this absence of functional conservation. CONCLUSIONS/SIGNIFICANCE:Our results show that the role of dmrt2 gene is not conserved during zebrafish and mouse embryonic development.
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lourenco2010leftrightplos Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Lourenço, Raquel;Lopes, Susana S;Saúde, Leonor;
Journal PloS one
Year 2010
DOI
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URL
http://europepmc.org/articles/PMC3010978?pdf=render
Keywords Keywords not found

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