Homeostatic interactions at the front of migration control the integrity and the efficiency of a migratory glial chain.
Fiche publication
Date publication
septembre 2011
Auteurs
Membres identifiés du Cancéropôle Est :
Dr GIANGRANDE Angela
Tous les auteurs :
Berzsenyi S, Kumar A, Giangrande A
Lien Pubmed
Résumé
In metazoans, cell migration often occurs in a collective manner: the cells move while physically and functionally connected to their neighbors. The coordinated and timely movement of the cells eventually ensures the proper organization of tissues, and deregulation in such a process contributes to the development of severe diseases. Thus, understanding the cellular mechanisms underlying coordinated cell movement is of great interest in basic and medical science. The developing Drosophila wing provides an excellent model to follow the chain migration of glial cells in vivo. Cells at the tip of the glial collective have been shown to control the timely movement of the chain. In the present study, we show that while pioneers trigger chain migration, they cannot move as single cells. We also show that isolating cell clusters at the chain tip restores the formation of smaller migratory communities. Interestingly, the migratory efficiency of these de novo formed communities depends on the number of cells and progressively improves as the size of the cluster increases. Thus, homeostatic events at the migratory front control community integrity, efficiency, and coordination, emphasizing the importance of interactions and cell counting in fine-tuning collective processes.
Référence
J Neurosci. 2011 Sep 28;31(39):13722-7.