English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/143158
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Topological Progression in Proliferating Epithelia Is Driven by a Unique Variation in Polygon Distribution

AuthorsSánchez-Gutiérrez, Daniel ; Sáez, Aurora; Pascual Bravo, Alberto ; Escudero, Luis M.
Issue Date5-Nov-2013
PublisherPublic Library of Science
CitationPLoS ONE 8(11): e79227 (2013)
AbstractMorphogenesis is consequence of lots of small coordinated variations that occur during development. In proliferating stages, tissue growth is coupled to changes in shape and organization. A number of studies have analyzed the topological properties of proliferating epithelia using the Drosophila wing disc as a model. These works are based in the existence of a fixed distribution of these epithelial cells according to their number of sides. Cell division, cell rearrangements or a combination of both mechanisms have been proposed to be responsible for this polygonal assembling. Here, we have used different system biology methods to compare images from two close proliferative stages that present high morphological similarity. This approach enables us to search for traces of epithelial organization. First, we show that geometrical and network characteristics of individual cells are mainly dependent on their number of sides. Second, we find a significant divergence between the distribution of polygons in epithelia from mid-third instar larva versus early prepupa. We show that this alteration propagates into changes in epithelial organization. Remarkably, only the variation in polygon distribution driven by morphogenesis leads to progression in epithelial organization. In addition, we identify the relevant features that characterize these rearrangements. Our results reveal signs of epithelial homogenization during the growing phase, before the planar cell polarity pathway leads to the hexagonal packing of the epithelium during pupal stages.
Publisher version (URL)http://doi.org/10.1371/journal.pone.0079227
Identifiersissn: 1932-6203
Appears in Collections:(IBIS) Artículos
Files in This Item:
File Description SizeFormat 
topological_progression_Sanchez.pdf939,23 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.