Yusuke Hirabayashi & Yukiko Gotoh
Sunday, June 20, 2010
The temporally and spatially restricted nature of the differentiation capacity of cells in the neural lineage has been studied extensively in recent years. Epigenetic control of developmental genes, which is heritable through cell divisions, has emerged as a key mechanism defining the differentiation potential of cells. Short-term or reversible repression of developmental genes puts them in a 'poised state', ready to be activated in response to differentiation-inducing cues, whereas long-term or permanent repression of developmental genes restricts the cell fates they regulate. Here, the authors review the molecular mechanisms that underlie the establishment and regulation of differentiation potential along the neural lineage during development.