Click here to close Hello! We notice that you are using Internet Explorer, which is not supported by Xenbase and may cause the site to display incorrectly. We suggest using a current version of Chrome, FireFox, or Safari.
Dev Biol December 1, 1998; 204 (1): 187-96.

Tinman function is essential for vertebrate heart development: elimination of cardiac differentiation by dominant inhibitory mutants of the tinman-related genes, XNkx2-3 and XNkx2-5.

In Drosophila, the tinman gene is absolutely required for development of the dorsal vessel, the insect equivalent of the heart. In vertebrates, the tinman gene is represented by a small family of tinman-related sequences, some of which are expressed during embryonic heart development. At present however, the precise importance of this gene family for vertebrate heart development is unclear. Using the Xenopus embryo, we have employed a dominant inhibitory strategy to interfere with the function of the endogenous tinman-related genes. In these experiments, suppression of tinman gene function can result in the complete elimination of myocardial gene expression and the absence of cell movements associated with embryonic heart development. This inhibition can be rescued by expression of wild-type tinman sequences. These experiments indicate that function of tinman family genes is essential for development of the vertebrate heart.

PubMed ID: 9851852
Article link: Dev Biol
Grant support: HL52746 NHLBI NIH HHS

Genes referenced: nkx2-3 nkx2-5 tnni3

External Resources:
Article Images: [+] show captions

Xenbase: The Xenopus laevis and X. tropicalis resource.
Version: 4.9.2
Major funding for Xenbase is provided by the National Institute of Child Health and Human Development, grant P41 HD064556