First published online May 12, 2005
Development 132, 1106e (2005)
© The Company of Biologists Limited
Heartfelt networks
The vertebrate heart is assembled from precursor cells in the primary and
the secondary (anterior) heart field in a complex process that involves
numerous transcription factors. Phan and coworkers now describe how myocyte
enhancer factor 2C (MEF2C) and the transcriptional repressor BOP are involved
in cardiac development (see p.
2669). Mice embryos
lacking MEF2C or BOP develop malformed right ventricles and outflow tracts,
which implicates these transcription factors in anterior heart field
development. The researchers show that Bop expression in the
developing heart is downregulated in Mef2c mutant embryos and
identify a MEF2C-response element in the Bop promoter that controls
Bop expression in the anterior heart field. The researchers propose a
network of transcription factors involved in ventricular development that,
together with other recently described transcription factor networks in the
heart (see Development 132, part 10), provides important insights
into the aetiology of human congenital heart defects.

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Related articles in Development:
- BOP, a regulator of right ventricular heart development, is a direct transcriptional target of MEF2C in the developing heart
- Dillon Phan, Tara L. Rasmussen, Osamu Nakagawa, John McAnally, Paul D. Gottlieb, Philip W. Tucker, James A. Richardson, Rhonda Bassel-Duby, and Eric N. Olson
Development 2005 132: 2669-2678.
[Abstract]
[Full Text]