ArticleMolecular biology of the cell2011
Apical-basal polarity in Drosophila neuroblasts is independent of vesicular trafficking.
Article in Molecular biology of the cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- The cytoskeletal motor proteins Dynein and MyoV direct apical transport of Crumbs.Developmental biology · 2020Article
- The F-box protein Slmb restricts the activity of aPKC to polarize epithelial cells.Development (Cambridge, England) · 2014Article
- Organelle asymmetry for proper fitness, function, and fate.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2013Review
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4 authors.
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Abstract
The possession of apical-basal polarity is a common feature of epithelia and neural stem cells, so-called neuroblasts (NBs). In Drosophila, an evolutionarily conserved protein complex consisting of atypical protein kinase C and the scaffolding proteins Bazooka/PAR-3 and PAR-6 controls the polarity of both cell types. The components of this complex localize to the apical junctional region of epithelial cells and form an apical crescent in NBs. In epithelia, the PAR proteins interact with the cellular machinery for polarized exocytosis and endocytosis, both of which are essential for the establishment of plasma membrane polarity. In NBs, many cortical proteins show a strongly polarized subcellular localization, but there is little evidence for the existence of distinct apical and basolateral plasma membrane domains, raising the question of whether vesicular trafficking is required for polarization of NBs. We analyzed the polarity of NBs mutant for essential regulators of the main exocytic and endocytic pathways. Surprisingly, we found that none of these mutations affected NB polarity, demonstrating that NB cortical polarity is independent of plasma membrane polarity and that the PAR proteins function in a cell type-specific manner.
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