Résumé:
Protein SUMOylation regulates multiple processes involved in the differentiation and maturation of cells and tissues during development. Despite this, relatively little is known about
the spatial and temporal regulation of proteins that mediate SUMOylation and deSUMOylation in the CNS. Here we monitor the expression of key SUMO pathway proteins and levels
of substrate protein SUMOylation in the forebrain and cerebellum of Wistar rats during
development. Overall, the SUMOylation machinery is more highly-expressed at E18 and
decreases thereafter, as previously described. All of the proteins investigated are less abundant in adult than in embryonic brain. Furthermore, we show for first time that the profiles differ between cerebellum and cerebrum, indicating differential regional regulation of some of
the proteins analysed. These data provide further basic observation that may open a new
perspective of research about the role of SUMOylation in the development of different brain
regions.