Feeling the squeeze: live-cell extrusion limits cell density in epithelia.

Fernandez-Gonzalez, Rodrigo; Zallen, Jennifer A · Cell · 2012

basic_science · Level V

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Abstract

Tissues develop in confined volumes that can impose mechanical constraints on their growth, but it is unclear how cells respond to these limits to regulate tissue size and shape. Two papers show that overcrowding and cell deformation lead to the shedding of live cells to maintain homeostasis in epithelial cell sheets.