ArticleThe Journal of cell biology2003
Neuroglian, Gliotactin, and the Na+/K+ ATPase are essential for septate junction function in Drosophila.
Article in The Journal of cell biology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 105 papers.
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Who cites it
105 citing papers in PubMed, 247 citations in OpenAlex.
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- microRNA-184 distribution and consequences on glial septate junctions and the blood-brain barrier.PloS one · 2025Article
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- Regulation of Myogenesis by a Na/K-ATPase α1 Caveolin-Binding Motif.Stem cells (Dayton, Ohio) · 2022Article
- Kinesin-directed secretion of basement membrane proteins to a subdomain of the basolateral surface in Drosophila epithelial cells.Current biology : CB · 2022Article
- Septate junction proteins are required for cell shape changes, actomyosin reorganization and cell adhesion during dorsal closure inFrontiers in cell and developmental biology · 2022Article
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- Par3 cooperates with Sanpodo for the assembly of Notch clusters following asymmetric division ofeLife · 2021Article
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45 more citing papers are in PubMed but not listed here.
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
One essential function of epithelia is to form a barrier between the apical and basolateral surfaces of the epithelium. In vertebrate epithelia, the tight junction is the primary barrier to paracellular flow across epithelia, whereas in invertebrate epithelia, the septate junction (SJ) provides this function. In this study, we identify new proteins that are required for a functional paracellular barrier in Drosophila. In addition to the previously known components Coracle (COR) and Neurexin (NRX), we show that four other proteins, Gliotactin, Neuroglian (NRG), and both the alpha and beta subunits of the Na+/K+ ATPase, are required for formation of the paracellular barrier. In contrast to previous reports, we demonstrate that the Na pump is not localized basolaterally in epithelial cells, but instead is concentrated at the SJ. Data from immunoprecipitation and somatic mosaic studies suggest that COR, NRX, NRG, and the Na+/K+ ATPase form an interdependent complex. Furthermore, the observation that NRG, a Drosophila homologue of vertebrate neurofascin, is an SJ component is consistent with the notion that the invertebrate SJ is homologous to the vertebrate paranodal SJ. These findings have implications not only for invertebrate epithelia and barrier functions, but also for understanding of neuron-glial interactions in the mammalian nervous system.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.