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Book Chapter

Heterogeneity, Cell Biology and Tissue Mechanics of Pseudostratified Epithelia: Coordination of Cell Divisions and Growth in Tightly Packed Tissues

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Matejcic,  Marija
Max Planck Institute of Molecular Cell Biology and Genetics, Max Planck Society;

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Norden,  Caren
Max Planck Institute of Molecular Cell Biology and Genetics, Max Planck Society;

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Citation

Strzyz, P. J., Matejcic, M., & Norden, C. (2016). Heterogeneity, Cell Biology and Tissue Mechanics of Pseudostratified Epithelia: Coordination of Cell Divisions and Growth in Tightly Packed Tissues. In K. W. Jeon (Ed.), International Review of Cell and Molecular Biology, Vol. 325 (pp. 89-114). Amsterdam, Netherlands: Elsevier.


Cite as: https://hdl.handle.net/21.11116/0000-0001-02E1-E
Abstract
Pseudostratified epithelia (PSE) are tightly packed proliferative tissues that are important precursors of the development of diverse organs in a plethora of species, invertebrate and vertebrate. PSE consist of elongated epithelial cells that are attached to the apical and basal side of the tissue. The nuclei of these cells undergo interkinetic nuclear migration (IKNM) which leads to all mitotic events taking place at the apical surface of the epithelium. In this review, we discuss the intricacies of proliferation in PSE, considering cell biological, as well as the physical aspects. First, we summarize the principles governing the invariability of apical nuclear migration and apical cell division as well as the importance of apical mitoses for tissue proliferation. Then, we focus on the mechanical and structural features of these tissues. Here, we discuss how the overall architecture of pseudostratified tissues changes with increased cell packing. Lastly, we consider possible mechanical cues resulting from these changes and their potential influence on cell proliferation.