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Current BiologyVolume 25, Issue 1, 5 January 2015, Pages 53-60

Aurora a triggers Lgl cortical release during symmetric division to control planar spindle orientation(Article)(Open Access)

  • aInstituto de Biologia Molecular e Celular (IBMC), Universidade Do Porto, Rua do Campo Alegre 823, Porto, 4150-180, Portugal
  • bInstituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade Do Porto, Rua de Jorge Viterbo Ferreira 228, Porto, 4050-313, Portugal

Abstract

Mitotic spindle orientation is essential to control cell-fate specification and epithelial architecture [1]. The tumor suppressor Lgl localizes to the basolateral cortex of epithelial cells, where it acts together with Dlg and Scrib to organize apicobasal polarity [2]. Dlg and Scrib also control planar spindle orientation [3, 4], but how the organization of polarity complexes is adjusted to control symmetric division is largely unknown. Here, we show that the Dlg complex is remodeled during Drosophila follicular epithelium cell division, when Lgl is released to the cytoplasm. Lgl redistribution during epithelial mitosis is reminiscent of asymmetric cell division, where it is proposed that Aurora A promotes aPKC activation to control the localization of Lgl and cell-fate determinants [5]. We show that Aurora A controls Lgl localization directly, triggering its cortical release at early prophase in both epithelial and S2 cells. This relies on double phosphorylation within the putative aPKC phosphorylation site, which is required and sufficient for Lgl cortical release during mitosis and can be achieved by a combination of aPKC and Aurora A activities. Cortical retention of Lgl disrupts planar spindle orientation, but only when Lgl mutants that can bind Dlg are expressed. Hence, our work reveals that Lgl mitotic cortical release is not specifically linked to the asymmetric segregation of fate determinants, and we propose that Aurora A activation breaks the Dlg/Lgl interaction to allow planar spindle orientation during symmetric division via the Pins (LGN)/Dlg pathway. © 2015 Elsevier Ltd. All rights reserved.

Indexed keywords

EMTREE drug terms:aur protein, Drosophilaaurora A kinasediscs large 1 protein, DrosophilaDrosophila proteinguanine nucleotide dissociation inhibitorlethal (2) giant larvae protein, DrosophilaPins protein, DrosophilaPKC-3 proteinprotein kinase Ctumor suppressor protein
EMTREE medical terms:animalcell divisioncell polarityDrosophilaepithelium cellmetabolismphysiologyspindle apparatus
MeSH:AnimalsAurora Kinase ACell DivisionCell PolarityDrosophilaDrosophila ProteinsEpithelial CellsGuanine Nucleotide Dissociation InhibitorsProtein Kinase CSpindle ApparatusTumor Suppressor Proteins

Chemicals and CAS Registry Numbers:

protein kinase C, 141436-78-4;

aur protein, Drosophila; Aurora Kinase A; discs large 1 protein, Drosophila; Drosophila Proteins; Guanine Nucleotide Dissociation Inhibitors; lethal (2) giant larvae protein, Drosophila; Pins protein, Drosophila; PKC-3 protein; Protein Kinase C; Tumor Suppressor Proteins

Funding details

Funding sponsor Funding number Acronym
Fundação para a Ciência e a Tecnologia
See opportunities
FCOMP-01-0124-FEDER-019738,PTDC/BIA-BCM/120132/2010
Fuel Cell Technologies ProgramFCT
  • 1

    We thank J. Knoblich, D. St Johnston, D. Bilder, D. Glover, S. Brogna, R. Martinho, H. Maiato, D. Bergstralh, and the Bloomington Stock Center for fly stocks and reagents. This work was funded by FEDER funds through the Operational Competitiveness Programme COMPETE and by National Funds through FCT (Fundação para a Ciência e a Tecnologia) under the project FCOMP-01-0124-FEDER-019738 (PTDC/BIA-BCM/120132/2010), which also supported fellowships to C.C. and S.M. E.M. was funded by a Marie Curie-IEF and currently holds a FCT Investigator position.

  • ISSN: 09609822
  • CODEN: CUBLE
  • Source Type: Journal
  • Original language: English
  • DOI: 10.1016/j.cub.2014.10.053
  • PubMed ID: 25484294
  • Document Type: Article
  • Publisher: Cell Press

  Morais-De-Sá, E.; Instituto de Biologia Molecular e Celular (IBMC), Universidade Do Porto, Rua do Campo Alegre 823, Porto, Portugal
© Copyright 2015 Elsevier B.V., All rights reserved.

Cited by 43 documents

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Osswald, M. , Morais-de-Sá, E.
Dealing with apical–basal polarity and intercellular junctions: a multidimensional challenge for epithelial cell division
(2019) Current Opinion in Cell Biology
Peglion, F. , Goehring, N.W.
Switching states: dynamic remodelling of polarity complexes as a toolkit for cell polarization
(2019) Current Opinion in Cell Biology
View details of all 43 citations
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