Heterotypic contact inhibition of locomotion can drive cell sorting between epithelial and mesenchymal cell populations

• Published in: Journal of cell science Vol. 132; no. 11
• Main Authors: Brayford, Simon, Kenny, Fiona N, Hiratsuka, Toru, Serna-Morales, Eduardo, Yolland, Lawrence, Luchici, Andrei, Stramer, Brian M
• Format: Journal Article
• Language: English
• Published: England The Company of Biologists Ltd 31.05.2019
• Subjects: 3T3 Cells; Animals; Cell Communication - physiology; Cell Line; Cell Movement - physiology; Cell Separation; Contact Inhibition - physiology; Embryonic Development - physiology; Epithelial Cells - physiology; Extracellular Signal-Regulated MAP Kinases - genetics; Fibroblasts - physiology; Fibrosarcoma - metabolism; Humans; Mesenchymal Stem Cells - physiology; Mice; Receptor, EphB2 - genetics; Short Report; ERK signalling; Contact inhibition of locomotion; Cell sorting; MAPK signalling; Ephrin signalling
• ISSN: 0021-9533; 1477-9137
• DOI: 10.1242/jcs.223974

Interactions between different cell types can induce distinct contact inhibition of locomotion (CIL) responses that are hypothesised to control population-wide behaviours during embryogenesis. However, our understanding of the signals that lead to cell-type specific repulsion and the precise capacity of heterotypic CIL responses to drive emergent behaviours is lacking. Using a new model of heterotypic CIL, we show that fibrosarcoma cells, but not fibroblasts, are actively repelled by epithelial cells in culture. We show that knocking down EphB2 or ERK in fibrosarcoma cells specifically leads to disruption of the repulsion phase of CIL in response to interactions with epithelial cells. We also examine the population-wide effects when these various cell combinations are allowed to interact in culture. Unlike fibroblasts, fibrosarcoma cells completely segregate from epithelial cells and inhibiting their distinct CIL response by knocking down EphB2 or ERK family proteins also disrupts this emergent sorting behaviour. These data suggest that heterotypic CIL responses, in conjunction with processes such as differential adhesion, may aid the sorting of cell populations.