FRL and DAAM are required for lateral adhesion of interommatidial cells and patterning of the retinal floor.
Development
; 150(22)2023 Nov 15.
Article
em En
| MEDLINE
| ID: mdl-37997920
ABSTRACT
Optical insulation of the unit eyes (ommatidia) is an important prerequisite of precise sight with compound eyes. Separation of the ommatidia is ensured by pigment cells that organize into a hexagonal lattice in the Drosophila eye, forming thin walls between the facets. Cell adhesion, mediated by apically and latero-basally located junctional complexes, is crucial for stable attachment of these cells to each other and the basal lamina. Whereas former studies have focused on the formation and remodelling of the cellular connections at the apical region, here, we report a specific alteration of the lateral adhesion of the lattice cells, leaving the apical junctions largely unaffected. We found that DAAM and FRL, two formin-type cytoskeleton regulatory proteins, play redundant roles in lateral adhesion of the interommatidial cells and patterning of the retinal floor. We show that formin-dependent cortical actin assembly is crucial for latero-basal sealing of the ommatidial lattice. We expect that the investigation of these previously unreported eye phenotypes will pave the way toward a better understanding of the three-dimensional aspects of compound eye development.
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Base de dados:
MEDLINE
Assunto principal:
Proteínas de Drosophila
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Hungria