1. Modulation of cell surface architecture in gastrulating chick embryo in response to altered fibroblast growth factor (FGF) signaling.
- Author
-
Borgave S and Ghaskadbi S
- Subjects
- Animals, Chick Embryo, Fibroblast Growth Factor 2 pharmacology, Humans, In Vitro Techniques, Microscopy, Electron, Scanning, Neural Plate drug effects, Neural Plate embryology, Neural Plate metabolism, Organizers, Embryonic drug effects, Organizers, Embryonic embryology, Organizers, Embryonic metabolism, Primitive Streak drug effects, Primitive Streak embryology, Primitive Streak metabolism, Recombinant Proteins pharmacology, Suramin pharmacology, Fibroblast Growth Factors metabolism, Gastrulation drug effects, Neural Plate ultrastructure, Organizers, Embryonic ultrastructure, Primitive Streak ultrastructure, Signal Transduction drug effects
- Abstract
Gastrulation is a fundamental process that results in formation of the three germ layers in an embryo. It involves highly coordinated cell migration. Cell to cell communication through cell surface and the surrounding molecular environment governs cell migration. In the present work, cell surface features, which are indicative of the migratory status of a cell, of an early gastrulating chick embryo were studied using scanning electron microscopy. The distinct ultrastructural features of cells located in the various regions of the epiblast are described. Differences in the surface features of cells from distinct embryonic regions indicate differences in their migratory capacities. Further, the dynamic nature of these cell surface features by their response to altered fibroblast growth factor (FGF) signaling, experimentally created by using either excess FGF or inhibition of FGF signaling are demonstrated.
- Published
- 2010