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Bidirectional multiciliated cell extrusion is controlled by Notch-driven basal extrusion and Piezo1-driven apical extrusion.

Authors :
Ventrella, Rosa
Kim, Sun K.
Sheridan, Jennifer
Grata, Aline
Bresteau, Enzo
Hassan, Osama A.
Suva, Eve E.
Walentek, Peter
Mitchell, Brian J.
Source :
Development (09501991). Sep2023, Vol. 150 Issue 17, p1-12. 12p.
Publication Year :
2023

Abstract

Xenopus embryos are covered with a complex epithelium containing numerous multiciliated cells (MCCs). During late-stage development, there is a dramatic remodeling of the epithelium that involves the complete loss of MCCs. Cell extrusion is awell-characterized process for driving cell loss while maintaining epithelial barrier function. Normal cell extrusion is typically unidirectional, whereas bidirectional extrusion is often associated with disease (e.g. cancer). We describe two distinct mechanisms for MCC extrusion, a basal extrusion driven by Notch signaling and an apical extrusion driven by Piezo1. Early in the process there is a strong bias towards basal extrusion, but as development continues there is a shift towards apical extrusion. Importantly, response to the Notch signal is age dependent and governed by the maintenance of the MCC transcriptional program such that extension of this program is protective against cell loss. In contrast, later apical extrusion is regulated by Piezo1, such that premature activation of Piezo1 leads to early extrusion while blocking Piezo1 leads to MCC maintenance. Distinct mechanisms for MCC loss underlie the importance of their removal during epithelial remodeling. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09501991
Volume :
150
Issue :
17
Database :
Academic Search Index
Journal :
Development (09501991)
Publication Type :
Academic Journal
Accession number :
172297626
Full Text :
https://doi.org/10.1242/dev.201612