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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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The Transcriptional Coactivator CAMTA2 Stimulates Cardiac Growth by Opposing Class II Histone Deacetylases.

Postnatal cardiac myocytes respond to diverse signals by hypertrophic growth and activation of a fetal gene program. In an effort to discover regulators of cardiac hypertrophy, we performed a eukaryotic expression screen for activators of the atrial natriuretic factor (ANF) gene, a cardiac-specific marker of hypertrophic signaling. We discovered that a family of transcriptional coactivators, called CAMTAs, promotes cardiomyocyte hypertrophy and activates the ANF gene, at least in part, by associating with the cardiac homeodomain protein Nkx2-5. The transcriptional activity of CAMTAs is governed by association with class II histone deacetylases (HDACs), which negatively regulate cardiac growth. Mice homozygous for a mutation in a CAMTA gene are defective in cardiac growth in response to pressure overload and neurohumoral signaling, whereas mice lacking HDAC5, a class II HDAC, are sensitized to the prohypertrophic actions of CAMTA. These findings reveal a transcriptional regulatory mechanism that modulates cardiac growth and gene expression by linking hypertrophic signals to the cardiac genome.[1]

References

  1. The Transcriptional Coactivator CAMTA2 Stimulates Cardiac Growth by Opposing Class II Histone Deacetylases. Song, K., Backs, J., McAnally, J., Qi, X., Gerard, R.D., Richardson, J.A., Hill, J.A., Bassel-Duby, R., Olson, E.N. Cell (2006) [Pubmed]
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