Modulation of cell surface architecture in gastrulating chick embryo in response to altered fibroblast growth factor (FGF) signaling.
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.
Borgave
Seema
S
Division of Animal Sciences, Agharkar Research Institute, Pune 411 004, India.
Ghaskadbi
Surendra
S
D000818:Animals; D002642:Chick Embryo; D016222:Fibroblast Growth Factor 2 / Q000494:pharmacology; D005346:Fibroblast Growth Factors / Q000378:metabolism*; D054262:Gastrulation / Q000187:drug effects*; D006801:Humans; D066298:In Vitro Techniques; D008855:Microscopy, Electron, Scanning; D054258:Neural Plate / Q000187:drug effects / Q000196:embryology / Q000378:metabolism / Q000648:ultrastructure*; D020897:Organizers, Embryonic / Q000187:drug effects / Q000196:embryology / Q000378:metabolism / Q000648:ultrastructure*; D054240:Primitive Streak / Q000187:drug effects / Q000196:embryology / Q000378:metabolism / Q000648:ultrastructure*; D011994:Recombinant Proteins / Q000494:pharmacology; D015398:Signal Transduction / Q000187:drug effects*; D013498:Suramin / Q000494:pharmacology
D011994:Recombinant Proteins; D016222:Fibroblast Growth Factor 2; D013498:Suramin; D005346:Fibroblast Growth Factors