YERKES PRIMATE RESEARCH CENTER, TODD PREUSS
Mice carrying the human enhancer HARE5 had brains that developed more quickly and grew 12 percent larger than mice with a chimpanzee version of the DNA, scientists reported this week (February 19) in Current Biology.
A team of scientists from Duke University scanned the human genome for sequences known as “human accelerated regions” that differ between people and chimpanzees. One of the sequences they found was HARE5, an enhancer that regulates gene expression. To determine the functional differences between human and chimp HARE5, which only vary at 16 locations in over 1,200 bases of DNA, the researchers engineered two sets of mice, each with a reporter gene under the control of either the human or the chimp version of the enhancer. The reporter made cells ...
