title: Interplay between the dividing cell and its neighbors regulates adherens junction formation during cytokinesis in epithelial tissue.
abstract: How adherens junctions (AJs) are formed upon cell division is largely unexplored. Here, we found that AJ formation is coordinated with cytokinesis and relies on an interplay between the dividing cell and its neighbors. During contraction of the cytokinetic ring, the neighboring cells locally accumulate Myosin II and produce the cortical tension necessary to set the initial geometry of the daughter cell interface. However, the neighboring cell membranes impede AJ formation. Upon midbody formation and concomitantly to neighboring cell withdrawal, Arp2/3-dependent actin polymerization oriented by the midbody maintains AJ geometry and regulates AJ final length and the epithelial cell arrangement upon division. We propose that cytokinesis in epithelia is a multicellular process, whereby the cooperative actions of the dividing cell and its neighbors define a two-tiered mechanism that spatially and temporally controls AJ formation while maintaining tissue cohesiveness.
authors: Polarity Division and Morphogenesis Team, Institut Curie, CNRS UMR 3215, INSERM U934, 26 rue d'Ulm, 75248 Paris Cedex 05, France.
authors: Sophie
authors: S
authors: Herszterg
authors: Andrea
authors: A
authors: Leibfried
authors: Floris
authors: F
authors: Bosveld
authors: Charlotte
authors: C
authors: Martin
authors: Yohanns
authors: Y
authors: Bellaiche
mesh_terms: D008841:Actin Cytoskeleton / Q000378:metabolism; D022005:Adherens Junctions / Q000235:genetics / Q000378:metabolism; D000818:Animals; D015820:Cadherins / Q000378:metabolism; D002448:Cell Adhesion / Q000235:genetics; D002450:Cell Communication / Q000235:genetics; D002455:Cell Division / Q000235:genetics; D002460:Cell Line; D002462:Cell Membrane; D016764:Cell Polarity; D048749:Cytokinesis / Q000235:genetics*; D004331:Drosophila melanogaster / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D004848:Epithelium / Q000254:growth & development* / Q000378:metabolism; D013909:Thorax / Q000166:cytology / Q000254:growth & development / Q000378:metabolism
chemical_list: D015820:Cadherins