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More than 3,000 epigenetic switches control daily liver cycles
Date:12/11/2012

excess glucose and that damages organs, which leads to diabetes. It's like over-charging a car battery. Bad things will happen."

In short, while we can't control what genes we're born with, we do have some influence over what they do. Nevertheless, the interplay between genome and epigenome is extremely complex. Panda, Ecker and their colleagues, including the paper's co-first authors Salk postdoctoral researchers, Christopher Vollmers and Robert J. Schmitz, did their studies in mice. In the mouse liver, they discovered more than 3,000 epigenomic elements, which regulate the circadian cycles of 14,492 genes. Comparing the mouse genome to the human genome, they find many of the same genes.

"Now that we know where the switches are, it brings us one step closer to understanding the mechanism of gene regulation," says Panda, "For example, it helps us restrict our search for other factors to particular regions of the genome. In other words, at least we now know to search in Alaska, rather than Australia. But Alaska's still a big place."


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Contact: Andy Hoang
ahoang@salk.edu
619-861-5811
Salk Institute
Source:Eurekalert  

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