Population context drives cell-to-cell variability in interferon response in epithelial cells
Metz-Zumaran, C.; Doldan, P.; Muraca, F.; Keser, Y.; Lukas, P.; Kuropka, B.; Küchenhoff, L.; Rastgou Talemi, S.; Hoefer, T.; Freund, C.; Cavalcanti-Adam, E. A.; Graw, F.; Stanifer, M. L.; Boulant, S.
Show abstract
Isogenic cells respond in a heterogeneous manner to interferon. Using a micropatterning approach combined with high-content imaging and spatial analyses, we characterized how the population context (position of a cell with respect to the neighboring cells) of human intestinal epithelial cells affects single cell response to interferons. We identified that cells at the edge of a cellular colony are significantly more responsive than cells embedded within this colony. We determined that this spatial heterogeneity in IFN response was the result of the polarized basolateral distribution of the IFN receptors making cells located in the center of a cellular colony not responsive to ectopic IFN stimulation. We could demonstrate that this population context driven cell-to-cell variability influences the outcome of viral infection as cells embedded in a cellular colony are not protected by interferons and therefore more susceptible to infection. Our data highlights that the behavior of individual isolated cells does not directly translate to their behavior in a population, placing the population context as a key driver of cell-to-cell heterogeneity in IFN response.
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