title: Desmosome dynamics in migrating epithelial cells requires the actin cytoskeleton.
abstract: Re-modeling of epithelial tissues requires that the cells in the tissue rearrange their adhesive contacts in order to allow cells to migrate relative to neighboring cells. Desmosomes are prominent adhesive structures found in a variety of epithelial tissues that are believed to inhibit cell migration and invasion. Mechanisms regulating desmosome assembly and stability in migrating cells are largely unknown. In this study we established a cell culture model to examine the fate of desmosomal components during scratch wound migration. Desmosomes are rapidly assembled between epithelial cells at the lateral edges of migrating cells and structures are transported in a retrograde fashion while the structures become larger and mature. Desmosome assembly and dynamics in this system are dependent on the actin cytoskeleton prior to being associated with the keratin intermediate filament cytoskeleton. These studies extend our understanding of desmosome assembly and provide a system to examine desmosome assembly and dynamics during epithelial cell migration.
authors.affiliation: The University of Nebraska Medical Center College of Dentistry, Lincoln, NE 68583, USA.
authors.forename: Brett J
authors.initials: BJ
authors.lastname: Roberts
authors.forename: Anjeza
authors.initials: A
authors.lastname: Pashaj
authors.forename: Keith R
authors.initials: KR
authors.lastname: Johnson
authors.forename: James K
authors.initials: JK
authors.lastname: Wahl
mesh_terms: D008841:Actin Cytoskeleton / Q000378:metabolism / Q000502:physiology*; D002448:Cell Adhesion / Q000502:physiology; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000502:physiology*; D003598:Cytoskeletal Proteins / Q000378:metabolism; D051187:Desmocollins / Q000378:metabolism; D003896:Desmosomes / Q000378:metabolism / Q000502:physiology*; D004847:Epithelial Cells / Q000166:cytology / Q000378:metabolism; D006801:Humans; D007382:Intermediate Filaments / Q000378:metabolism; D007633:Keratins / Q000378:metabolism
chemical_list: D003598:Cytoskeletal Proteins; C081561:DSC2 protein, human; D051187:Desmocollins; D007633:Keratins