Apical cytoskeletons and junctional complexes as a combined system in epithelial cell sheets
| Autor: | Atsushi Tamura, Hatsuho Kanoh, Tomoki Yano, Sachiko Tsukita |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Tight junction Chemistry General Neuroscience Regeneration (biology) Apical constriction Context (language use) Compartmentalization (psychology) General Biochemistry Genetics and Molecular Biology Epithelium Cell biology 03 medical and health sciences 030104 developmental biology medicine.anatomical_structure History and Philosophy of Science Paracellular transport medicine Cytoskeleton |
| Zdroj: | Annals of the New York Academy of Sciences. 1405:32-43 |
| ISSN: | 0077-8923 |
| DOI: | 10.1111/nyas.13432 |
| Popis: | Epithelial cell sheet formation is central to many aspects of vertebrate development and function. For example, it is a major principle of differentiation in embryogenesis and regeneration, enables the compartmentalization of tissues, and is the basis for the maintenance of homeostasis throughout the body. A key characteristic of biologically functional epithelial cell sheets is a clear difference between the top and bottom sides owing to the apicobasal polarity of the cells in the sheet, as seen in the simple polar epithelia. Epithelial cell sheets are formed by cell-cell adhesion conferred by junctional complexes, in particular via tight junctions (TJs), which thus create a paracellular barrier. This review focuses on the apical side of the sheet, which serves as the front line. The apical membranes and TJs of the various tissues have specific characteristics that enable them to function and adapt to their biological context: each system must be robust, but also dynamic and flexible to maintain homeostasis. Here, we describe various apical cytoskeletal structures that are critical to the integrity of epithelial cell sheets. We also discuss the association of apical cytoskeletal networks with TJs, which thus forms a combined system, tentatively termed the TJ-apical complex. |
| Databáze: | OpenAIRE |
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